* Re: ixgbe: normalize frag_list usage
From: Alexander Duyck @ 2010-10-04 19:49 UTC (permalink / raw)
To: David Miller
Cc: Kirsher, Jeffrey T, Brandeburg, Jesse, Allan, Bruce W,
netdev@vger.kernel.org
In-Reply-To: <20101004.113258.212671454.davem@davemloft.net>
David Miller wrote:
> From: Alexander Duyck <alexander.h.duyck@intel.com>
> Date: Mon, 04 Oct 2010 11:04:18 -0700
>
>> This will not work for RSC due to the fact that it assumes only one
>> RSC context is active per ring and that is not the case. There can be
>> multiple RSC combined flows interlaced on the ring.
>
> Thanks for looking at this Alexander.
>
> I must have mis-understood what the current code is doing.
>
> It looked like RSC packets always show up in-order in the RX ring.
>
> And that they are scanned for by simply combining any sequence of
> non-EOP packets up to and including the final EOP one into a frag
> list.
>
> Are the RSC packets are identified via something else entirely?
They show up in order, but they are not necessarily linear. You can
have other packets show up in the middle of the flow and RSC just jumps
over them. The determination for the jump is handled via nextp in
ixgbe_clean_rx_irq.
I'll look into this and see if I can come up with a counter-proposal
patch based on the suggestions I was making. The key item though is
that the tail would need some means of referencing head which I think
can probably be accomplished via skb->next.
Thanks,
Alex
^ permalink raw reply
* [PATCH 2/4 v2] nl80211: use the new genetlink pre/post_doit hooks
From: Johannes Berg @ 2010-10-04 19:36 UTC (permalink / raw)
To: John Linville
Cc: netdev-u79uwXL29TY76Z2rM5mHXA,
linux-wireless-u79uwXL29TY76Z2rM5mHXA
In-Reply-To: <20101004191838.964614880-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>
From: Johannes Berg <johannes.berg-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
This makes nl80211 use the new genetlink
pre_doit/post_doit hooks for locking and
checking the interface/wiphy index.
This significantly reduces the code size
and the likelihood of locking errors.
Signed-off-by: Johannes Berg <johannes.berg-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
v2: updated commit message
net/wireless/nl80211.c | 1735 +++++++++++++++----------------------------------
1 file changed, 532 insertions(+), 1203 deletions(-)
--- wireless-testing.orig/net/wireless/nl80211.c 2010-10-01 00:15:08.000000000 +0200
+++ wireless-testing/net/wireless/nl80211.c 2010-10-01 11:09:34.000000000 +0200
@@ -23,6 +23,11 @@
#include "nl80211.h"
#include "reg.h"
+static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
+ struct genl_info *info);
+static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
+ struct genl_info *info);
+
/* the netlink family */
static struct genl_family nl80211_fam = {
.id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
@@ -31,6 +36,8 @@ static struct genl_family nl80211_fam =
.version = 1, /* no particular meaning now */
.maxattr = NL80211_ATTR_MAX,
.netnsok = true,
+ .pre_doit = nl80211_pre_doit,
+ .post_doit = nl80211_post_doit,
};
/* internal helper: get rdev and dev */
@@ -703,28 +710,18 @@ static int nl80211_dump_wiphy(struct sk_
static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
{
struct sk_buff *msg;
- struct cfg80211_registered_device *dev;
-
- dev = cfg80211_get_dev_from_info(info);
- if (IS_ERR(dev))
- return PTR_ERR(dev);
+ struct cfg80211_registered_device *dev = info->user_ptr[0];
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
- goto out_err;
-
- if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0)
- goto out_free;
+ return -ENOMEM;
- cfg80211_unlock_rdev(dev);
+ if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
+ nlmsg_free(msg);
+ return -ENOBUFS;
+ }
return genlmsg_reply(msg, info);
-
- out_free:
- nlmsg_free(msg);
- out_err:
- cfg80211_unlock_rdev(dev);
- return -ENOBUFS;
}
static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
@@ -813,24 +810,10 @@ static int __nl80211_set_channel(struct
static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *netdev;
- int result;
-
- rtnl_lock();
-
- result = get_rdev_dev_by_info_ifindex(info, &rdev, &netdev);
- if (result)
- goto unlock_rtnl;
-
- result = __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
-
- dev_put(netdev);
- cfg80211_unlock_rdev(rdev);
- unlock_rtnl:
- rtnl_unlock();
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *netdev = info->user_ptr[1];
- return result;
+ return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
}
static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
@@ -845,8 +828,6 @@ static int nl80211_set_wiphy(struct sk_b
u32 frag_threshold = 0, rts_threshold = 0;
u8 coverage_class = 0;
- rtnl_lock();
-
/*
* Try to find the wiphy and netdev. Normally this
* function shouldn't need the netdev, but this is
@@ -873,8 +854,7 @@ static int nl80211_set_wiphy(struct sk_b
rdev = __cfg80211_rdev_from_info(info);
if (IS_ERR(rdev)) {
mutex_unlock(&cfg80211_mutex);
- result = PTR_ERR(rdev);
- goto unlock;
+ return PTR_ERR(rdev);
}
wdev = NULL;
netdev = NULL;
@@ -1056,8 +1036,6 @@ static int nl80211_set_wiphy(struct sk_b
mutex_unlock(&rdev->mtx);
if (netdev)
dev_put(netdev);
- unlock:
- rtnl_unlock();
return result;
}
@@ -1137,33 +1115,20 @@ static int nl80211_dump_interface(struct
static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
{
struct sk_buff *msg;
- struct cfg80211_registered_device *dev;
- struct net_device *netdev;
- int err;
-
- err = get_rdev_dev_by_info_ifindex(info, &dev, &netdev);
- if (err)
- return err;
+ struct cfg80211_registered_device *dev = info->user_ptr[0];
+ struct net_device *netdev = info->user_ptr[1];
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
- goto out_err;
+ return -ENOMEM;
if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
- dev, netdev) < 0)
- goto out_free;
-
- dev_put(netdev);
- cfg80211_unlock_rdev(dev);
+ dev, netdev) < 0) {
+ nlmsg_free(msg);
+ return -ENOBUFS;
+ }
return genlmsg_reply(msg, info);
-
- out_free:
- nlmsg_free(msg);
- out_err:
- dev_put(netdev);
- cfg80211_unlock_rdev(dev);
- return -ENOBUFS;
}
static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
@@ -1223,39 +1188,29 @@ static int nl80211_valid_4addr(struct cf
static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct vif_params params;
int err;
enum nl80211_iftype otype, ntype;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
u32 _flags, *flags = NULL;
bool change = false;
memset(¶ms, 0, sizeof(params));
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
otype = ntype = dev->ieee80211_ptr->iftype;
if (info->attrs[NL80211_ATTR_IFTYPE]) {
ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
if (otype != ntype)
change = true;
- if (ntype > NL80211_IFTYPE_MAX) {
- err = -EINVAL;
- goto unlock;
- }
+ if (ntype > NL80211_IFTYPE_MAX)
+ return -EINVAL;
}
if (info->attrs[NL80211_ATTR_MESH_ID]) {
- if (ntype != NL80211_IFTYPE_MESH_POINT) {
- err = -EINVAL;
- goto unlock;
- }
+ if (ntype != NL80211_IFTYPE_MESH_POINT)
+ return -EINVAL;
params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
change = true;
@@ -1266,20 +1221,18 @@ static int nl80211_set_interface(struct
change = true;
err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
if (err)
- goto unlock;
+ return err;
} else {
params.use_4addr = -1;
}
if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
- if (ntype != NL80211_IFTYPE_MONITOR) {
- err = -EINVAL;
- goto unlock;
- }
+ if (ntype != NL80211_IFTYPE_MONITOR)
+ return -EINVAL;
err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
&_flags);
if (err)
- goto unlock;
+ return err;
flags = &_flags;
change = true;
@@ -1293,17 +1246,12 @@ static int nl80211_set_interface(struct
if (!err && params.use_4addr != -1)
dev->ieee80211_ptr->use_4addr = params.use_4addr;
- unlock:
- dev_put(dev);
- cfg80211_unlock_rdev(rdev);
- unlock_rtnl:
- rtnl_unlock();
return err;
}
static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct vif_params params;
int err;
enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
@@ -1320,19 +1268,9 @@ static int nl80211_new_interface(struct
return -EINVAL;
}
- rtnl_lock();
-
- rdev = cfg80211_get_dev_from_info(info);
- if (IS_ERR(rdev)) {
- err = PTR_ERR(rdev);
- goto unlock_rtnl;
- }
-
if (!rdev->ops->add_virtual_intf ||
- !(rdev->wiphy.interface_modes & (1 << type))) {
- err = -EOPNOTSUPP;
- goto unlock;
- }
+ !(rdev->wiphy.interface_modes & (1 << type)))
+ return -EOPNOTSUPP;
if (type == NL80211_IFTYPE_MESH_POINT &&
info->attrs[NL80211_ATTR_MESH_ID]) {
@@ -1344,7 +1282,7 @@ static int nl80211_new_interface(struct
params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
if (err)
- goto unlock;
+ return err;
}
err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
@@ -1354,38 +1292,18 @@ static int nl80211_new_interface(struct
nla_data(info->attrs[NL80211_ATTR_IFNAME]),
type, err ? NULL : &flags, ¶ms);
- unlock:
- cfg80211_unlock_rdev(rdev);
- unlock_rtnl:
- rtnl_unlock();
return err;
}
static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
-
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->del_virtual_intf) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
- err = rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
+ if (!rdev->ops->del_virtual_intf)
+ return -EOPNOTSUPP;
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
- return err;
+ return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
}
struct get_key_cookie {
@@ -1438,9 +1356,9 @@ static void get_key_callback(void *c, st
static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
u8 key_idx = 0;
u8 *mac_addr = NULL;
struct get_key_cookie cookie = {
@@ -1458,30 +1376,17 @@ static int nl80211_get_key(struct sk_buf
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->get_key) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->get_key)
+ return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg) {
- err = -ENOMEM;
- goto out;
- }
+ if (!msg)
+ return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
NL80211_CMD_NEW_KEY);
-
- if (IS_ERR(hdr)) {
- err = PTR_ERR(hdr);
- goto free_msg;
- }
+ if (IS_ERR(hdr))
+ return PTR_ERR(hdr);
cookie.msg = msg;
cookie.idx = key_idx;
@@ -1501,28 +1406,21 @@ static int nl80211_get_key(struct sk_buf
goto nla_put_failure;
genlmsg_end(msg, hdr);
- err = genlmsg_reply(msg, info);
- goto out;
+ return genlmsg_reply(msg, info);
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
-
return err;
}
static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct key_parse key;
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
int (*func)(struct wiphy *wiphy, struct net_device *netdev,
u8 key_index);
@@ -1537,21 +1435,13 @@ static int nl80211_set_key(struct sk_buf
if (!key.def && !key.defmgmt)
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
if (key.def)
func = rdev->ops->set_default_key;
else
func = rdev->ops->set_default_mgmt_key;
- if (!func) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!func)
+ return -EOPNOTSUPP;
wdev_lock(dev->ieee80211_ptr);
err = nl80211_key_allowed(dev->ieee80211_ptr);
@@ -1568,21 +1458,14 @@ static int nl80211_set_key(struct sk_buf
#endif
wdev_unlock(dev->ieee80211_ptr);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-
- unlock_rtnl:
- rtnl_unlock();
-
return err;
}
static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
struct key_parse key;
u8 *mac_addr = NULL;
@@ -1596,21 +1479,11 @@ static int nl80211_new_key(struct sk_buf
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->add_key) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->add_key)
+ return -EOPNOTSUPP;
- if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, mac_addr)) {
- err = -EINVAL;
- goto out;
- }
+ if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, mac_addr))
+ return -EINVAL;
wdev_lock(dev->ieee80211_ptr);
err = nl80211_key_allowed(dev->ieee80211_ptr);
@@ -1619,20 +1492,14 @@ static int nl80211_new_key(struct sk_buf
mac_addr, &key.p);
wdev_unlock(dev->ieee80211_ptr);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
-
return err;
}
static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
u8 *mac_addr = NULL;
struct key_parse key;
@@ -1643,16 +1510,8 @@ static int nl80211_del_key(struct sk_buf
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->del_key) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->del_key)
+ return -EOPNOTSUPP;
wdev_lock(dev->ieee80211_ptr);
err = nl80211_key_allowed(dev->ieee80211_ptr);
@@ -1669,13 +1528,6 @@ static int nl80211_del_key(struct sk_buf
#endif
wdev_unlock(dev->ieee80211_ptr);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-
- unlock_rtnl:
- rtnl_unlock();
-
return err;
}
@@ -1683,36 +1535,25 @@ static int nl80211_addset_beacon(struct
{
int (*call)(struct wiphy *wiphy, struct net_device *dev,
struct beacon_parameters *info);
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct beacon_parameters params;
int haveinfo = 0;
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+ return -EOPNOTSUPP;
switch (info->genlhdr->cmd) {
case NL80211_CMD_NEW_BEACON:
/* these are required for NEW_BEACON */
if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
!info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
- !info->attrs[NL80211_ATTR_BEACON_HEAD]) {
- err = -EINVAL;
- goto out;
- }
+ !info->attrs[NL80211_ATTR_BEACON_HEAD])
+ return -EINVAL;
call = rdev->ops->add_beacon;
break;
@@ -1721,14 +1562,11 @@ static int nl80211_addset_beacon(struct
break;
default:
WARN_ON(1);
- err = -EOPNOTSUPP;
- goto out;
+ return -EOPNOTSUPP;
}
- if (!call) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!call)
+ return -EOPNOTSUPP;
memset(¶ms, 0, sizeof(params));
@@ -1758,53 +1596,25 @@ static int nl80211_addset_beacon(struct
haveinfo = 1;
}
- if (!haveinfo) {
- err = -EINVAL;
- goto out;
- }
-
- err = call(&rdev->wiphy, dev, ¶ms);
-
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
+ if (!haveinfo)
+ return -EINVAL;
- return err;
+ return call(&rdev->wiphy, dev, ¶ms);
}
static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
-
- rtnl_lock();
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->del_beacon) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->del_beacon)
+ return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
- err = -EOPNOTSUPP;
- goto out;
- }
- err = rdev->ops->del_beacon(&rdev->wiphy, dev);
-
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+ return -EOPNOTSUPP;
- return err;
+ return rdev->ops->del_beacon(&rdev->wiphy, dev);
}
static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
@@ -2001,12 +1811,12 @@ static int nl80211_dump_station(struct s
static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct station_info sinfo;
struct sk_buff *msg;
u8 *mac_addr = NULL;
+ int err;
memset(&sinfo, 0, sizeof(sinfo));
@@ -2015,42 +1825,25 @@ static int nl80211_get_station(struct sk
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->get_station) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->get_station)
+ return -EOPNOTSUPP;
err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
if (err)
- goto out;
+ return err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
- goto out;
+ return -ENOMEM;
if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
- dev, mac_addr, &sinfo) < 0)
- goto out_free;
+ dev, mac_addr, &sinfo) < 0) {
+ nlmsg_free(msg);
+ return -ENOBUFS;
+ }
- err = genlmsg_reply(msg, info);
- goto out;
-
- out_free:
- nlmsg_free(msg);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
-
- return err;
-}
+ return genlmsg_reply(msg, info);
+}
/*
* Get vlan interface making sure it is running and on the right wiphy.
@@ -2079,9 +1872,9 @@ static int get_vlan(struct genl_info *in
static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
struct station_parameters params;
u8 *mac_addr = NULL;
@@ -2119,12 +1912,6 @@ static int nl80211_set_station(struct sk
params.plink_action =
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
err = get_vlan(info, rdev, ¶ms.vlan);
if (err)
goto out;
@@ -2186,19 +1973,15 @@ static int nl80211_set_station(struct sk
out:
if (params.vlan)
dev_put(params.vlan);
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
return err;
}
static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
struct station_parameters params;
u8 *mac_addr = NULL;
@@ -2235,18 +2018,10 @@ static int nl80211_new_station(struct sk
if (parse_station_flags(info, ¶ms))
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
- err = -EINVAL;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+ return -EINVAL;
err = get_vlan(info, rdev, ¶ms.vlan);
if (err)
@@ -2270,52 +2045,28 @@ static int nl80211_new_station(struct sk
out:
if (params.vlan)
dev_put(params.vlan);
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
-
return err;
}
static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
u8 *mac_addr = NULL;
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
- err = -EINVAL;
- goto out;
- }
-
- if (!rdev->ops->del_station) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- err = rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+ return -EINVAL;
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ if (!rdev->ops->del_station)
+ return -EOPNOTSUPP;
- return err;
+ return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
}
static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
@@ -2442,9 +2193,9 @@ static int nl80211_dump_mpath(struct sk_
static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
struct mpath_info pinfo;
struct sk_buff *msg;
u8 *dst = NULL;
@@ -2457,53 +2208,33 @@ static int nl80211_get_mpath(struct sk_b
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->get_mpath) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->get_mpath)
+ return -EOPNOTSUPP;
- if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
+ return -EOPNOTSUPP;
err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
if (err)
- goto out;
+ return err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
- goto out;
+ return -ENOMEM;
if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
- dev, dst, next_hop, &pinfo) < 0)
- goto out_free;
-
- err = genlmsg_reply(msg, info);
- goto out;
-
- out_free:
- nlmsg_free(msg);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ dev, dst, next_hop, &pinfo) < 0) {
+ nlmsg_free(msg);
+ return -ENOBUFS;
+ }
- return err;
+ return genlmsg_reply(msg, info);
}
static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
u8 *dst = NULL;
u8 *next_hop = NULL;
@@ -2516,42 +2247,22 @@ static int nl80211_set_mpath(struct sk_b
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->change_mpath) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!rdev->ops->change_mpath)
+ return -EOPNOTSUPP;
- err = rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
+ if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
+ return -EOPNOTSUPP;
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ if (!netif_running(dev))
+ return -ENETDOWN;
- return err;
+ return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
}
+
static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
u8 *dst = NULL;
u8 *next_hop = NULL;
@@ -2564,75 +2275,37 @@ static int nl80211_new_mpath(struct sk_b
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->add_mpath) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!rdev->ops->add_mpath)
+ return -EOPNOTSUPP;
- err = rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
+ if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
+ return -EOPNOTSUPP;
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ if (!netif_running(dev))
+ return -ENETDOWN;
- return err;
+ return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
}
static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
u8 *dst = NULL;
if (info->attrs[NL80211_ATTR_MAC])
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->del_mpath) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- err = rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
-
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ if (!rdev->ops->del_mpath)
+ return -EOPNOTSUPP;
- return err;
+ return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
}
static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct bss_parameters params;
memset(¶ms, 0, sizeof(params));
@@ -2660,32 +2333,14 @@ static int nl80211_set_bss(struct sk_buf
if (info->attrs[NL80211_ATTR_AP_ISOLATE])
params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->change_bss) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->change_bss)
+ return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- err = rdev->ops->change_bss(&rdev->wiphy, dev, ¶ms);
-
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+ return -EOPNOTSUPP;
- return err;
+ return rdev->ops->change_bss(&rdev->wiphy, dev, ¶ms);
}
static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
@@ -2764,37 +2419,26 @@ static int nl80211_req_set_reg(struct sk
static int nl80211_get_mesh_params(struct sk_buff *skb,
struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct mesh_config cur_params;
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
void *hdr;
struct nlattr *pinfoattr;
struct sk_buff *msg;
- rtnl_lock();
-
- /* Look up our device */
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->get_mesh_params) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->get_mesh_params)
+ return -EOPNOTSUPP;
/* Get the mesh params */
err = rdev->ops->get_mesh_params(&rdev->wiphy, dev, &cur_params);
if (err)
- goto out;
+ return err;
/* Draw up a netlink message to send back */
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg) {
- err = -ENOBUFS;
- goto out;
- }
+ if (!msg)
+ return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
NL80211_CMD_GET_MESH_PARAMS);
if (!hdr)
@@ -2833,21 +2477,12 @@ static int nl80211_get_mesh_params(struc
cur_params.dot11MeshHWMPRootMode);
nla_nest_end(msg, pinfoattr);
genlmsg_end(msg, hdr);
- err = genlmsg_reply(msg, info);
- goto out;
+ return genlmsg_reply(msg, info);
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
- err = -EMSGSIZE;
- out:
- /* Cleanup */
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
-
- return err;
+ return -ENOBUFS;
}
#define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
@@ -2877,10 +2512,9 @@ static const struct nla_policy nl80211_m
static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
{
- int err;
u32 mask;
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct mesh_config cfg;
struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
struct nlattr *parent_attr;
@@ -2892,16 +2526,8 @@ static int nl80211_set_mesh_params(struc
parent_attr, nl80211_meshconf_params_policy))
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->set_mesh_params) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->set_mesh_params)
+ return -EOPNOTSUPP;
/* This makes sure that there aren't more than 32 mesh config
* parameters (otherwise our bitfield scheme would not work.) */
@@ -2947,16 +2573,7 @@ static int nl80211_set_mesh_params(struc
nla_get_u8);
/* Apply changes */
- err = rdev->ops->set_mesh_params(&rdev->wiphy, dev, &cfg, mask);
-
- out:
- /* cleanup */
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
-
- return err;
+ return rdev->ops->set_mesh_params(&rdev->wiphy, dev, &cfg, mask);
}
#undef FILL_IN_MESH_PARAM_IF_SET
@@ -3139,8 +2756,8 @@ static int validate_scan_freqs(struct nl
static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct cfg80211_scan_request *request;
struct cfg80211_ssid *ssid;
struct ieee80211_channel *channel;
@@ -3153,36 +2770,22 @@ static int nl80211_trigger_scan(struct s
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
wiphy = &rdev->wiphy;
- if (!rdev->ops->scan) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->scan)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
- if (rdev->scan_req) {
- err = -EBUSY;
- goto out;
- }
+ if (rdev->scan_req)
+ return -EBUSY;
if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
n_channels = validate_scan_freqs(
info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
- if (!n_channels) {
- err = -EINVAL;
- goto out;
- }
+ if (!n_channels)
+ return -EINVAL;
} else {
n_channels = 0;
@@ -3195,29 +2798,23 @@ static int nl80211_trigger_scan(struct s
nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
n_ssids++;
- if (n_ssids > wiphy->max_scan_ssids) {
- err = -EINVAL;
- goto out;
- }
+ if (n_ssids > wiphy->max_scan_ssids)
+ return -EINVAL;
if (info->attrs[NL80211_ATTR_IE])
ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
else
ie_len = 0;
- if (ie_len > wiphy->max_scan_ie_len) {
- err = -EINVAL;
- goto out;
- }
+ if (ie_len > wiphy->max_scan_ie_len)
+ return -EINVAL;
request = kzalloc(sizeof(*request)
+ sizeof(*ssid) * n_ssids
+ sizeof(channel) * n_channels
+ ie_len, GFP_KERNEL);
- if (!request) {
- err = -ENOMEM;
- goto out;
- }
+ if (!request)
+ return -ENOMEM;
if (n_ssids)
request->ssids = (void *)&request->channels[n_channels];
@@ -3305,18 +2902,11 @@ static int nl80211_trigger_scan(struct s
if (!err) {
nl80211_send_scan_start(rdev, dev);
dev_hold(dev);
- }
-
+ } else {
out_free:
- if (err) {
rdev->scan_req = NULL;
kfree(request);
}
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
return err;
}
@@ -3593,8 +3183,8 @@ static bool nl80211_valid_cipher_suite(u
static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct ieee80211_channel *chan;
const u8 *bssid, *ssid, *ie = NULL;
int err, ssid_len, ie_len = 0;
@@ -3636,12 +3226,6 @@ static int nl80211_authenticate(struct s
key.p.key = NULL;
}
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
if (key.idx >= 0) {
int i;
bool ok = false;
@@ -3651,35 +3235,25 @@ static int nl80211_authenticate(struct s
break;
}
}
- if (!ok) {
- err = -EINVAL;
- goto out;
- }
+ if (!ok)
+ return -EINVAL;
}
- if (!rdev->ops->auth) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->auth)
+ return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
chan = ieee80211_get_channel(&rdev->wiphy,
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
- if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) {
- err = -EINVAL;
- goto out;
- }
+ if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
+ return -EINVAL;
ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
@@ -3690,24 +3264,15 @@ static int nl80211_authenticate(struct s
}
auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
- if (!nl80211_valid_auth_type(auth_type)) {
- err = -EINVAL;
- goto out;
- }
+ if (!nl80211_valid_auth_type(auth_type))
+ return -EINVAL;
local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
- err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
- ssid, ssid_len, ie, ie_len,
- key.p.key, key.p.key_len, key.idx,
- local_state_change);
-
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
- return err;
+ return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
+ ssid, ssid_len, ie, ie_len,
+ key.p.key, key.p.key_len, key.idx,
+ local_state_change);
}
static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
@@ -3791,8 +3356,8 @@ static int nl80211_crypto_settings(struc
static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct cfg80211_crypto_settings crypto;
struct ieee80211_channel *chan;
const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
@@ -3807,36 +3372,22 @@ static int nl80211_associate(struct sk_b
!info->attrs[NL80211_ATTR_WIPHY_FREQ])
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->assoc) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->assoc)
+ return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
chan = ieee80211_get_channel(&rdev->wiphy,
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
- if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) {
- err = -EINVAL;
- goto out;
- }
+ if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
+ return -EINVAL;
ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
@@ -3851,10 +3402,8 @@ static int nl80211_associate(struct sk_b
nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
if (mfp == NL80211_MFP_REQUIRED)
use_mfp = true;
- else if (mfp != NL80211_MFP_NO) {
- err = -EINVAL;
- goto out;
- }
+ else if (mfp != NL80211_MFP_NO)
+ return -EINVAL;
}
if (info->attrs[NL80211_ATTR_PREV_BSSID])
@@ -3866,20 +3415,15 @@ static int nl80211_associate(struct sk_b
ssid, ssid_len, ie, ie_len, use_mfp,
&crypto);
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
return err;
}
static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
const u8 *ie = NULL, *bssid;
- int err, ie_len = 0;
+ int ie_len = 0;
u16 reason_code;
bool local_state_change;
@@ -3892,35 +3436,22 @@ static int nl80211_deauthenticate(struct
if (!info->attrs[NL80211_ATTR_REASON_CODE])
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->deauth) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->deauth)
+ return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
if (reason_code == 0) {
/* Reason Code 0 is reserved */
- err = -EINVAL;
- goto out;
+ return -EINVAL;
}
if (info->attrs[NL80211_ATTR_IE]) {
@@ -3930,23 +3461,16 @@ static int nl80211_deauthenticate(struct
local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
- err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
- local_state_change);
-
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
- return err;
+ return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
+ local_state_change);
}
static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
const u8 *ie = NULL, *bssid;
- int err, ie_len = 0;
+ int ie_len = 0;
u16 reason_code;
bool local_state_change;
@@ -3959,35 +3483,22 @@ static int nl80211_disassociate(struct s
if (!info->attrs[NL80211_ATTR_REASON_CODE])
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->disassoc) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->disassoc)
+ return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
if (reason_code == 0) {
/* Reason Code 0 is reserved */
- err = -EINVAL;
- goto out;
+ return -EINVAL;
}
if (info->attrs[NL80211_ATTR_IE]) {
@@ -3997,21 +3508,14 @@ static int nl80211_disassociate(struct s
local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
- err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
- local_state_change);
-
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
- return err;
+ return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
+ local_state_change);
}
static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct cfg80211_ibss_params ibss;
struct wiphy *wiphy;
struct cfg80211_cached_keys *connkeys = NULL;
@@ -4036,26 +3540,14 @@ static int nl80211_join_ibss(struct sk_b
return -EINVAL;
}
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->join_ibss) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->join_ibss)
+ return -EOPNOTSUPP;
- if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
wiphy = &rdev->wiphy;
@@ -4073,24 +3565,12 @@ static int nl80211_join_ibss(struct sk_b
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
if (!ibss.channel ||
ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
- ibss.channel->flags & IEEE80211_CHAN_DISABLED) {
- err = -EINVAL;
- goto out;
- }
+ ibss.channel->flags & IEEE80211_CHAN_DISABLED)
+ return -EINVAL;
ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
- if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
- connkeys = nl80211_parse_connkeys(rdev,
- info->attrs[NL80211_ATTR_KEYS]);
- if (IS_ERR(connkeys)) {
- err = PTR_ERR(connkeys);
- connkeys = NULL;
- goto out;
- }
- }
-
if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
u8 *rates =
nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
@@ -4100,10 +3580,8 @@ static int nl80211_join_ibss(struct sk_b
wiphy->bands[ibss.channel->band];
int i, j;
- if (n_rates == 0) {
- err = -EINVAL;
- goto out;
- }
+ if (n_rates == 0)
+ return -EINVAL;
for (i = 0; i < n_rates; i++) {
int rate = (rates[i] & 0x7f) * 5;
@@ -4116,60 +3594,39 @@ static int nl80211_join_ibss(struct sk_b
break;
}
}
- if (!found) {
- err = -EINVAL;
- goto out;
- }
+ if (!found)
+ return -EINVAL;
}
}
- err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
+ if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
+ connkeys = nl80211_parse_connkeys(rdev,
+ info->attrs[NL80211_ATTR_KEYS]);
+ if (IS_ERR(connkeys))
+ return PTR_ERR(connkeys);
+ }
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
+ err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
if (err)
kfree(connkeys);
- rtnl_unlock();
return err;
}
static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
- int err;
-
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->leave_ibss) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
- if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->leave_ibss)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
+ return -EOPNOTSUPP;
- err = cfg80211_leave_ibss(rdev, dev, false);
+ if (!netif_running(dev))
+ return -ENETDOWN;
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
- return err;
+ return cfg80211_leave_ibss(rdev, dev, false);
}
#ifdef CONFIG_NL80211_TESTMODE
@@ -4179,20 +3636,12 @@ static struct genl_multicast_group nl802
static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
if (!info->attrs[NL80211_ATTR_TESTDATA])
return -EINVAL;
- rtnl_lock();
-
- rdev = cfg80211_get_dev_from_info(info);
- if (IS_ERR(rdev)) {
- err = PTR_ERR(rdev);
- goto unlock_rtnl;
- }
-
err = -EOPNOTSUPP;
if (rdev->ops->testmode_cmd) {
rdev->testmode_info = info;
@@ -4202,10 +3651,6 @@ static int nl80211_testmode_do(struct sk
rdev->testmode_info = NULL;
}
- cfg80211_unlock_rdev(rdev);
-
- unlock_rtnl:
- rtnl_unlock();
return err;
}
@@ -4296,8 +3741,8 @@ EXPORT_SYMBOL(cfg80211_testmode_event);
static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct cfg80211_connect_params connect;
struct wiphy *wiphy;
struct cfg80211_cached_keys *connkeys = NULL;
@@ -4326,22 +3771,13 @@ static int nl80211_connect(struct sk_buf
NL80211_MAX_NR_CIPHER_SUITES);
if (err)
return err;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
wiphy = &rdev->wiphy;
@@ -4360,39 +3796,27 @@ static int nl80211_connect(struct sk_buf
ieee80211_get_channel(wiphy,
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
if (!connect.channel ||
- connect.channel->flags & IEEE80211_CHAN_DISABLED) {
- err = -EINVAL;
- goto out;
- }
+ connect.channel->flags & IEEE80211_CHAN_DISABLED)
+ return -EINVAL;
}
if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
connkeys = nl80211_parse_connkeys(rdev,
info->attrs[NL80211_ATTR_KEYS]);
- if (IS_ERR(connkeys)) {
- err = PTR_ERR(connkeys);
- connkeys = NULL;
- goto out;
- }
+ if (IS_ERR(connkeys))
+ return PTR_ERR(connkeys);
}
err = cfg80211_connect(rdev, dev, &connect, connkeys);
-
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
if (err)
kfree(connkeys);
- rtnl_unlock();
return err;
}
static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
- int err;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
u16 reason;
if (!info->attrs[NL80211_ATTR_REASON_CODE])
@@ -4403,36 +3827,19 @@ static int nl80211_disconnect(struct sk_
if (reason == 0)
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- err = cfg80211_disconnect(rdev, dev, reason, true);
+ if (!netif_running(dev))
+ return -ENETDOWN;
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
- return err;
+ return cfg80211_disconnect(rdev, dev, reason, true);
}
static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net *net;
int err;
u32 pid;
@@ -4442,43 +3849,26 @@ static int nl80211_wiphy_netns(struct sk
pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
- rtnl_lock();
-
- rdev = cfg80211_get_dev_from_info(info);
- if (IS_ERR(rdev)) {
- err = PTR_ERR(rdev);
- goto out_rtnl;
- }
-
net = get_net_ns_by_pid(pid);
- if (IS_ERR(net)) {
- err = PTR_ERR(net);
- goto out;
- }
+ if (IS_ERR(net))
+ return PTR_ERR(net);
err = 0;
/* check if anything to do */
- if (net_eq(wiphy_net(&rdev->wiphy), net))
- goto out_put_net;
+ if (!net_eq(wiphy_net(&rdev->wiphy), net))
+ err = cfg80211_switch_netns(rdev, net);
- err = cfg80211_switch_netns(rdev, net);
- out_put_net:
put_net(net);
- out:
- cfg80211_unlock_rdev(rdev);
- out_rtnl:
- rtnl_unlock();
return err;
}
static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_pmksa *pmksa) = NULL;
- int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
struct cfg80211_pmksa pmksa;
memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
@@ -4489,20 +3879,12 @@ static int nl80211_setdel_pmksa(struct s
if (!info->attrs[NL80211_ATTR_PMKID])
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
switch (info->genlhdr->cmd) {
case NL80211_CMD_SET_PMKSA:
@@ -4516,62 +3898,32 @@ static int nl80211_setdel_pmksa(struct s
break;
}
- if (!rdev_ops) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- err = rdev_ops(&rdev->wiphy, dev, &pmksa);
-
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ if (!rdev_ops)
+ return -EOPNOTSUPP;
- return err;
+ return rdev_ops(&rdev->wiphy, dev, &pmksa);
}
static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
-
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- if (!rdev->ops->flush_pmksa) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- err = rdev->ops->flush_pmksa(&rdev->wiphy, dev);
-
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- return err;
+ if (!rdev->ops->flush_pmksa)
+ return -EOPNOTSUPP;
+ return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
}
static int nl80211_remain_on_channel(struct sk_buff *skb,
struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct ieee80211_channel *chan;
struct sk_buff *msg;
void *hdr;
@@ -4593,21 +3945,11 @@ static int nl80211_remain_on_channel(str
if (!duration || !msecs_to_jiffies(duration) || duration > 5000)
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->remain_on_channel) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->remain_on_channel)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
channel_type = nla_get_u32(
@@ -4615,24 +3957,18 @@ static int nl80211_remain_on_channel(str
if (channel_type != NL80211_CHAN_NO_HT &&
channel_type != NL80211_CHAN_HT20 &&
channel_type != NL80211_CHAN_HT40PLUS &&
- channel_type != NL80211_CHAN_HT40MINUS) {
- err = -EINVAL;
- goto out;
- }
+ channel_type != NL80211_CHAN_HT40MINUS)
+ return -EINVAL;
}
freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
chan = rdev_freq_to_chan(rdev, freq, channel_type);
- if (chan == NULL) {
- err = -EINVAL;
- goto out;
- }
+ if (chan == NULL)
+ return -EINVAL;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg) {
- err = -ENOMEM;
- goto out;
- }
+ if (!msg)
+ return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
NL80211_CMD_REMAIN_ON_CHANNEL);
@@ -4651,58 +3987,35 @@ static int nl80211_remain_on_channel(str
NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
genlmsg_end(msg, hdr);
- err = genlmsg_reply(msg, info);
- goto out;
+
+ return genlmsg_reply(msg, info);
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
return err;
}
static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
u64 cookie;
- int err;
if (!info->attrs[NL80211_ATTR_COOKIE])
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->cancel_remain_on_channel) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->cancel_remain_on_channel)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
- err = rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
-
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
- return err;
+ return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
}
static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
@@ -4738,26 +4051,18 @@ static int nl80211_set_tx_bitrate_mask(s
struct genl_info *info)
{
struct nlattr *tb[NL80211_TXRATE_MAX + 1];
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct cfg80211_bitrate_mask mask;
- int err, rem, i;
- struct net_device *dev;
+ int rem, i;
+ struct net_device *dev = info->user_ptr[1];
struct nlattr *tx_rates;
struct ieee80211_supported_band *sband;
if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->set_bitrate_mask) {
- err = -EOPNOTSUPP;
- goto unlock;
- }
+ if (!rdev->ops->set_bitrate_mask)
+ return -EOPNOTSUPP;
memset(&mask, 0, sizeof(mask));
/* Default to all rates enabled */
@@ -4774,15 +4079,11 @@ static int nl80211_set_tx_bitrate_mask(s
nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
{
enum ieee80211_band band = nla_type(tx_rates);
- if (band < 0 || band >= IEEE80211_NUM_BANDS) {
- err = -EINVAL;
- goto unlock;
- }
+ if (band < 0 || band >= IEEE80211_NUM_BANDS)
+ return -EINVAL;
sband = rdev->wiphy.bands[band];
- if (sband == NULL) {
- err = -EINVAL;
- goto unlock;
- }
+ if (sband == NULL)
+ return -EINVAL;
nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
nla_len(tx_rates), nl80211_txattr_policy);
if (tb[NL80211_TXRATE_LEGACY]) {
@@ -4790,29 +4091,19 @@ static int nl80211_set_tx_bitrate_mask(s
sband,
nla_data(tb[NL80211_TXRATE_LEGACY]),
nla_len(tb[NL80211_TXRATE_LEGACY]));
- if (mask.control[band].legacy == 0) {
- err = -EINVAL;
- goto unlock;
- }
+ if (mask.control[band].legacy == 0)
+ return -EINVAL;
}
}
- err = rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
-
- unlock:
- dev_put(dev);
- cfg80211_unlock_rdev(rdev);
- unlock_rtnl:
- rtnl_unlock();
- return err;
+ return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
}
static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
- int err;
if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
return -EINVAL;
@@ -4820,44 +4111,28 @@ static int nl80211_register_mgmt(struct
if (info->attrs[NL80211_ATTR_FRAME_TYPE])
frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+ return -EOPNOTSUPP;
/* not much point in registering if we can't reply */
- if (!rdev->ops->mgmt_tx) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->mgmt_tx)
+ return -EOPNOTSUPP;
- err = cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
+ return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
frame_type,
nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
- return err;
}
static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct ieee80211_channel *chan;
enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
bool channel_type_valid = false;
@@ -4871,31 +4146,19 @@ static int nl80211_tx_mgmt(struct sk_buf
!info->attrs[NL80211_ATTR_WIPHY_FREQ])
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->mgmt_tx) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->mgmt_tx)
+ return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
channel_type = nla_get_u32(
@@ -4903,25 +4166,19 @@ static int nl80211_tx_mgmt(struct sk_buf
if (channel_type != NL80211_CHAN_NO_HT &&
channel_type != NL80211_CHAN_HT20 &&
channel_type != NL80211_CHAN_HT40PLUS &&
- channel_type != NL80211_CHAN_HT40MINUS) {
- err = -EINVAL;
- goto out;
- }
+ channel_type != NL80211_CHAN_HT40MINUS)
+ return -EINVAL;
channel_type_valid = true;
}
freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
chan = rdev_freq_to_chan(rdev, freq, channel_type);
- if (chan == NULL) {
- err = -EINVAL;
- goto out;
- }
+ if (chan == NULL)
+ return -EINVAL;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg) {
- err = -ENOMEM;
- goto out;
- }
+ if (!msg)
+ return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
NL80211_CMD_FRAME);
@@ -4941,110 +4198,72 @@ static int nl80211_tx_mgmt(struct sk_buf
NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
genlmsg_end(msg, hdr);
- err = genlmsg_reply(msg, info);
- goto out;
+ return genlmsg_reply(msg, info);
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
return err;
}
static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
u8 ps_state;
bool state;
int err;
- if (!info->attrs[NL80211_ATTR_PS_STATE]) {
- err = -EINVAL;
- goto out;
- }
+ if (!info->attrs[NL80211_ATTR_PS_STATE])
+ return -EINVAL;
ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
- if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) {
- err = -EINVAL;
- goto out;
- }
-
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
+ if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
+ return -EINVAL;
wdev = dev->ieee80211_ptr;
- if (!rdev->ops->set_power_mgmt) {
- err = -EOPNOTSUPP;
- goto unlock_rdev;
- }
+ if (!rdev->ops->set_power_mgmt)
+ return -EOPNOTSUPP;
state = (ps_state == NL80211_PS_ENABLED) ? true : false;
if (state == wdev->ps)
- goto unlock_rdev;
-
- wdev->ps = state;
-
- if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, wdev->ps,
- wdev->ps_timeout))
- /* assume this means it's off */
- wdev->ps = false;
-
-unlock_rdev:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
+ return 0;
-out:
+ err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
+ wdev->ps_timeout);
+ if (!err)
+ wdev->ps = state;
return err;
}
static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
enum nl80211_ps_state ps_state;
struct wireless_dev *wdev;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
struct sk_buff *msg;
void *hdr;
int err;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
wdev = dev->ieee80211_ptr;
- if (!rdev->ops->set_power_mgmt) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->set_power_mgmt)
+ return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg) {
- err = -ENOMEM;
- goto out;
- }
+ if (!msg)
+ return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
NL80211_CMD_GET_POWER_SAVE);
if (!hdr) {
- err = -ENOMEM;
+ err = -ENOBUFS;
goto free_msg;
}
@@ -5056,22 +4275,12 @@ static int nl80211_get_power_save(struct
NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
genlmsg_end(msg, hdr);
- err = genlmsg_reply(msg, info);
- goto out;
+ return genlmsg_reply(msg, info);
-nla_put_failure:
+ nla_put_failure:
err = -ENOBUFS;
-
-free_msg:
+ free_msg:
nlmsg_free(msg);
-
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-
-unlock_rtnl:
- rtnl_unlock();
-
return err;
}
@@ -5085,43 +4294,24 @@ nl80211_attr_cqm_policy[NL80211_ATTR_CQM
static int nl80211_set_cqm_rssi(struct genl_info *info,
s32 threshold, u32 hysteresis)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev;
- struct net_device *dev;
- int err;
+ struct net_device *dev = info->user_ptr[1];
if (threshold > 0)
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
wdev = dev->ieee80211_ptr;
- if (!rdev->ops->set_cqm_rssi_config) {
- err = -EOPNOTSUPP;
- goto unlock_rdev;
- }
+ if (!rdev->ops->set_cqm_rssi_config)
+ return -EOPNOTSUPP;
if (wdev->iftype != NL80211_IFTYPE_STATION &&
- wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto unlock_rdev;
- }
-
- err = rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
- threshold, hysteresis);
-
- unlock_rdev:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
+ wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- return err;
+ return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
+ threshold, hysteresis);
}
static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
@@ -5155,6 +4345,54 @@ out:
return err;
}
+#define NL80211_FLAG_NEED_WIPHY 0x01
+#define NL80211_FLAG_NEED_NETDEV 0x02
+#define NL80211_FLAG_NEED_RTNL 0x04
+
+static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev;
+ struct net_device *dev;
+ int err;
+ bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
+
+ if (rtnl)
+ rtnl_lock();
+
+ if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
+ rdev = cfg80211_get_dev_from_info(info);
+ if (IS_ERR(rdev)) {
+ if (rtnl)
+ rtnl_unlock();
+ return PTR_ERR(rdev);
+ }
+ info->user_ptr[0] = rdev;
+ } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
+ err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
+ if (err) {
+ if (rtnl)
+ rtnl_unlock();
+ return err;
+ }
+ info->user_ptr[0] = rdev;
+ info->user_ptr[1] = dev;
+ }
+
+ return 0;
+}
+
+static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
+ struct genl_info *info)
+{
+ if (info->user_ptr[0])
+ cfg80211_unlock_rdev(info->user_ptr[0]);
+ if (info->user_ptr[1])
+ dev_put(info->user_ptr[1]);
+ if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
+ rtnl_unlock();
+}
+
static struct genl_ops nl80211_ops[] = {
{
.cmd = NL80211_CMD_GET_WIPHY,
@@ -5162,12 +4400,14 @@ static struct genl_ops nl80211_ops[] = {
.dumpit = nl80211_dump_wiphy,
.policy = nl80211_policy,
/* can be retrieved by unprivileged users */
+ .internal_flags = NL80211_FLAG_NEED_WIPHY,
},
{
.cmd = NL80211_CMD_SET_WIPHY,
.doit = nl80211_set_wiphy,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_INTERFACE,
@@ -5175,90 +4415,119 @@ static struct genl_ops nl80211_ops[] = {
.dumpit = nl80211_dump_interface,
.policy = nl80211_policy,
/* can be retrieved by unprivileged users */
+ .internal_flags = NL80211_FLAG_NEED_NETDEV,
},
{
.cmd = NL80211_CMD_SET_INTERFACE,
.doit = nl80211_set_interface,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_NEW_INTERFACE,
.doit = nl80211_new_interface,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_WIPHY |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_INTERFACE,
.doit = nl80211_del_interface,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_KEY,
.doit = nl80211_get_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_KEY,
.doit = nl80211_set_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_NEW_KEY,
.doit = nl80211_new_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_KEY,
.doit = nl80211_del_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_BEACON,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.doit = nl80211_addset_beacon,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_NEW_BEACON,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.doit = nl80211_addset_beacon,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_BEACON,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.doit = nl80211_del_beacon,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_STATION,
.doit = nl80211_get_station,
.dumpit = nl80211_dump_station,
.policy = nl80211_policy,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_STATION,
.doit = nl80211_set_station,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_NEW_STATION,
.doit = nl80211_new_station,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_STATION,
.doit = nl80211_del_station,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_MPATH,
@@ -5266,30 +4535,40 @@ static struct genl_ops nl80211_ops[] = {
.dumpit = nl80211_dump_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_MPATH,
.doit = nl80211_set_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_NEW_MPATH,
.doit = nl80211_new_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_MPATH,
.doit = nl80211_del_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_BSS,
.doit = nl80211_set_bss,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_REG,
@@ -5314,18 +4593,24 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_get_mesh_params,
.policy = nl80211_policy,
/* can be retrieved by unprivileged users */
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_MESH_PARAMS,
.doit = nl80211_set_mesh_params,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_TRIGGER_SCAN,
.doit = nl80211_trigger_scan,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_SCAN,
@@ -5337,36 +4622,48 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_authenticate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_ASSOCIATE,
.doit = nl80211_associate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEAUTHENTICATE,
.doit = nl80211_deauthenticate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DISASSOCIATE,
.doit = nl80211_disassociate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_JOIN_IBSS,
.doit = nl80211_join_ibss,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_LEAVE_IBSS,
.doit = nl80211_leave_ibss,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
#ifdef CONFIG_NL80211_TESTMODE
{
@@ -5374,6 +4671,8 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_testmode_do,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_WIPHY |
+ NL80211_FLAG_NEED_RTNL,
},
#endif
{
@@ -5381,18 +4680,24 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_connect,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DISCONNECT,
.doit = nl80211_disconnect,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_WIPHY_NETNS,
.doit = nl80211_wiphy_netns,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_WIPHY |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_SURVEY,
@@ -5404,72 +4709,96 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_setdel_pmksa,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_PMKSA,
.doit = nl80211_setdel_pmksa,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_FLUSH_PMKSA,
.doit = nl80211_flush_pmksa,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
.doit = nl80211_remain_on_channel,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
.doit = nl80211_cancel_remain_on_channel,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
.doit = nl80211_set_tx_bitrate_mask,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_REGISTER_FRAME,
.doit = nl80211_register_mgmt,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_FRAME,
.doit = nl80211_tx_mgmt,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_POWER_SAVE,
.doit = nl80211_set_power_save,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_POWER_SAVE,
.doit = nl80211_get_power_save,
.policy = nl80211_policy,
/* can be retrieved by unprivileged users */
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_CQM,
.doit = nl80211_set_cqm,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_CHANNEL,
.doit = nl80211_set_channel,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
};
--
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^ permalink raw reply
* Re: [PATCH 0/4] nl80211 cleanups
From: Johannes Berg @ 2010-10-04 19:33 UTC (permalink / raw)
To: John Linville
Cc: netdev-u79uwXL29TY76Z2rM5mHXA,
linux-wireless-u79uwXL29TY76Z2rM5mHXA
In-Reply-To: <20101004191402.183055479-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>
On Mon, 2010-10-04 at 21:14 +0200, Johannes Berg wrote:
> This patchset adds some new hooks to generic
> netlink and then goes on to use them to really
> optimise a lot of locking code in nl80211.
>
> It not only shrinks the code in nl80211 by
> almost 5K .text, but also greatly reduces the
> likelihood of future errors.
And by that, I mean locking errors.
johannes
--
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the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
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^ permalink raw reply
* [patch] eicon: make buffer larger
From: Dan Carpenter @ 2010-10-04 19:24 UTC (permalink / raw)
To: Armin Schindler; +Cc: Karsten Keil, netdev, linux-kernel, kernel-janitors
In diva_mnt_add_xdi_adapter() we do this:
strcpy (clients[id].drvName, tmp);
strcpy (clients[id].Dbg.drvName, tmp);
The "clients[id].drvName" is a 128 character buffer and
"clients[id].Dbg.drvName" was originally a 16 character buffer but I've
changed it to 128 as well. We don't actually use 128 characters but we
do use more than 16.
I've also changed the size of "tmp" to 128 characters instead of 256.
Signed-off-by: Dan Carpenter <error27@gmail.com>
diff --git a/drivers/isdn/hardware/eicon/debuglib.h b/drivers/isdn/hardware/eicon/debuglib.h
index 8ea5877..02eed6b 100644
--- a/drivers/isdn/hardware/eicon/debuglib.h
+++ b/drivers/isdn/hardware/eicon/debuglib.h
@@ -249,7 +249,7 @@ typedef struct _DbgHandle_
} regTime ; /* timestamp for registration */
void *pIrp ; /* ptr to pending i/o request */
unsigned long dbgMask ; /* current debug mask */
- char drvName[16] ; /* ASCII name of registered driver */
+ char drvName[128] ; /* ASCII name of registered driver */
char drvTag[64] ; /* revision string */
DbgEnd dbg_end ; /* function for debug closing */
DbgLog dbg_prt ; /* function for debug appending */
diff --git a/drivers/isdn/hardware/eicon/debug.c b/drivers/isdn/hardware/eicon/debug.c
index 33ce89e..3626401 100644
--- a/drivers/isdn/hardware/eicon/debug.c
+++ b/drivers/isdn/hardware/eicon/debug.c
@@ -862,7 +862,7 @@ void diva_mnt_add_xdi_adapter (const DESCRIPTOR* d) {
diva_os_spin_lock_magic_t old_irql, old_irql1;
dword sec, usec, logical, serial, org_mask;
int id, best_id = 0, free_id = -1;
- char tmp[256];
+ char tmp[128];
diva_dbg_entry_head_t* pmsg = NULL;
int len;
word size;
^ permalink raw reply related
* Re: [PATCH] AF_UNIX: Implement SO_TIMESTAMP and SO_TIMETAMPNS on Unix sockets
From: Eric Dumazet @ 2010-10-04 19:20 UTC (permalink / raw)
To: Alban Crequy
Cc: Lennart Poettering, David S. Miller, Stephen Hemminger,
Cyrill Gorcunov, Alexey Dobriyan, linux-kernel, netdev
In-Reply-To: <1286218109-30771-1-git-send-email-alban.crequy@collabora.co.uk>
Le lundi 04 octobre 2010 à 19:48 +0100, Alban Crequy a écrit :
> Userspace applications can already request to receive timestamps with:
> setsockopt(sockfd, SOL_SOCKET, SO_TIMESTAMP, ...)
>
> Although setsockopt() returns zero (success), timestamps are not added to the
> ancillary data. This patch fixes that on SOCK_DGRAM and SOCK_SEQPACKET Unix
> sockets.
>
> Signed-off-by: Alban Crequy <alban.crequy@collabora.co.uk>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Note: tstamp is sampled at the time of skb queueing, _after_ eventual
sleep in sock_alloc_send_skb() or memcpy_fromiovec()
^ permalink raw reply
* [PATCH 1/4] genetlink: introduce pre_doit/post_doit hooks
From: Johannes Berg @ 2010-10-04 19:14 UTC (permalink / raw)
To: John Linville; +Cc: netdev, linux-wireless
In-Reply-To: <20101004191402.183055479@sipsolutions.net>
[-- Attachment #1: 012-genl-more-boilerplate.patch --]
[-- Type: text/plain, Size: 3951 bytes --]
From: Johannes Berg <johannes.berg@intel.com>
Each family may have some amount of boilerplate
locking code that applies to most, or even all,
commands.
This allows a family to handle such things in
a more generic way, by allowing it to
a) include private flags in each operation
b) specify a pre_doit hook that is called,
before an operation's doit() callback and
may return an error directly,
c) specify a post_doit hook that can undo
locking or similar things done by pre_doit,
and finally
d) include two private pointers in each info
struct passed between all these operations
including doit(). (It's two because I'll
need two in nl80211 -- can be extended.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
include/net/genetlink.h | 18 ++++++++++++++++++
net/netlink/genetlink.c | 14 +++++++++++++-
2 files changed, 31 insertions(+), 1 deletion(-)
--- wireless-testing.orig/include/net/genetlink.h 2010-10-04 21:13:52.000000000 +0200
+++ wireless-testing/include/net/genetlink.h 2010-10-04 21:18:16.000000000 +0200
@@ -20,6 +20,9 @@ struct genl_multicast_group {
u32 id;
};
+struct genl_ops;
+struct genl_info;
+
/**
* struct genl_family - generic netlink family
* @id: protocol family idenfitier
@@ -29,6 +32,10 @@ struct genl_multicast_group {
* @maxattr: maximum number of attributes supported
* @netnsok: set to true if the family can handle network
* namespaces and should be presented in all of them
+ * @pre_doit: called before an operation's doit callback, it may
+ * do additional, common, filtering and return an error
+ * @post_doit: called after an operation's doit callback, it may
+ * undo operations done by pre_doit, for example release locks
* @attrbuf: buffer to store parsed attributes
* @ops_list: list of all assigned operations
* @family_list: family list
@@ -41,6 +48,12 @@ struct genl_family {
unsigned int version;
unsigned int maxattr;
bool netnsok;
+ int (*pre_doit)(struct genl_ops *ops,
+ struct sk_buff *skb,
+ struct genl_info *info);
+ void (*post_doit)(struct genl_ops *ops,
+ struct sk_buff *skb,
+ struct genl_info *info);
struct nlattr ** attrbuf; /* private */
struct list_head ops_list; /* private */
struct list_head family_list; /* private */
@@ -55,6 +68,8 @@ struct genl_family {
* @genlhdr: generic netlink message header
* @userhdr: user specific header
* @attrs: netlink attributes
+ * @_net: network namespace
+ * @user_ptr: user pointers
*/
struct genl_info {
u32 snd_seq;
@@ -66,6 +81,7 @@ struct genl_info {
#ifdef CONFIG_NET_NS
struct net * _net;
#endif
+ void * user_ptr[2];
};
static inline struct net *genl_info_net(struct genl_info *info)
@@ -81,6 +97,7 @@ static inline void genl_info_net_set(str
/**
* struct genl_ops - generic netlink operations
* @cmd: command identifier
+ * @internal_flags: flags used by the family
* @flags: flags
* @policy: attribute validation policy
* @doit: standard command callback
@@ -90,6 +107,7 @@ static inline void genl_info_net_set(str
*/
struct genl_ops {
u8 cmd;
+ u8 internal_flags;
unsigned int flags;
const struct nla_policy *policy;
int (*doit)(struct sk_buff *skb,
--- wireless-testing.orig/net/netlink/genetlink.c 2010-10-04 21:13:52.000000000 +0200
+++ wireless-testing/net/netlink/genetlink.c 2010-10-04 21:18:16.000000000 +0200
@@ -547,8 +547,20 @@ static int genl_rcv_msg(struct sk_buff *
info.userhdr = nlmsg_data(nlh) + GENL_HDRLEN;
info.attrs = family->attrbuf;
genl_info_net_set(&info, net);
+ memset(&info.user_ptr, 0, sizeof(info.user_ptr));
- return ops->doit(skb, &info);
+ if (family->pre_doit) {
+ err = family->pre_doit(ops, skb, &info);
+ if (err)
+ return err;
+ }
+
+ err = ops->doit(skb, &info);
+
+ if (family->post_doit)
+ family->post_doit(ops, skb, &info);
+
+ return err;
}
static void genl_rcv(struct sk_buff *skb)
^ permalink raw reply
* [PATCH 0/4] nl80211 cleanups
From: Johannes Berg @ 2010-10-04 19:14 UTC (permalink / raw)
To: John Linville; +Cc: netdev, linux-wireless
This patchset adds some new hooks to generic
netlink and then goes on to use them to really
optimise a lot of locking code in nl80211.
It not only shrinks the code in nl80211 by
almost 5K .text, but also greatly reduces the
likelihood of future errors.
I'd prefer to merge this through John's wireless
tree, so it'd be nice to get ACKs.
johannes
^ permalink raw reply
* [PATCH 4/4] nl80211: reduce dumping boilerplate
From: Johannes Berg @ 2010-10-04 19:14 UTC (permalink / raw)
To: John Linville
Cc: netdev-u79uwXL29TY76Z2rM5mHXA,
linux-wireless-u79uwXL29TY76Z2rM5mHXA
In-Reply-To: <20101004191402.183055479@sipsolutions.net>
[-- Attachment #1: 015-nl80211-consolidate-dump.patch --]
[-- Type: text/plain, Size: 5500 bytes --]
From: Johannes Berg <johannes.berg-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Consolidate boilerplate code needed for .dumpit
calls operating on netdevs.
Signed-off-by: Johannes Berg <johannes.berg-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
net/wireless/nl80211.c | 151 +++++++++++++++++++------------------------------
1 file changed, 59 insertions(+), 92 deletions(-)
--- wireless-testing.orig/net/wireless/nl80211.c 2010-10-01 11:14:46.000000000 +0200
+++ wireless-testing/net/wireless/nl80211.c 2010-10-01 11:27:47.000000000 +0200
@@ -198,6 +198,47 @@ static int nl80211_get_ifidx(struct netl
return res;
}
+static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
+ struct netlink_callback *cb,
+ struct cfg80211_registered_device **rdev,
+ struct net_device **dev)
+{
+ int ifidx = cb->args[0];
+ int err;
+
+ if (!ifidx)
+ ifidx = nl80211_get_ifidx(cb);
+ if (ifidx < 0)
+ return ifidx;
+
+ cb->args[0] = ifidx;
+
+ rtnl_lock();
+
+ *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
+ if (!*dev) {
+ err = -ENODEV;
+ goto out_rtnl;
+ }
+
+ *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
+ if (IS_ERR(dev)) {
+ err = PTR_ERR(dev);
+ goto out_rtnl;
+ }
+
+ return 0;
+ out_rtnl:
+ rtnl_unlock();
+ return err;
+}
+
+static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
+{
+ cfg80211_unlock_rdev(rdev);
+ rtnl_unlock();
+}
+
/* IE validation */
static bool is_valid_ie_attr(const struct nlattr *attr)
{
@@ -1748,28 +1789,12 @@ static int nl80211_dump_station(struct s
struct cfg80211_registered_device *dev;
struct net_device *netdev;
u8 mac_addr[ETH_ALEN];
- int ifidx = cb->args[0];
int sta_idx = cb->args[1];
int err;
- if (!ifidx)
- ifidx = nl80211_get_ifidx(cb);
- if (ifidx < 0)
- return ifidx;
-
- rtnl_lock();
-
- netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
- if (!netdev) {
- err = -ENODEV;
- goto out_rtnl;
- }
-
- dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
- if (IS_ERR(dev)) {
- err = PTR_ERR(dev);
- goto out_rtnl;
- }
+ err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
+ if (err)
+ return err;
if (!dev->ops->dump_station) {
err = -EOPNOTSUPP;
@@ -1799,9 +1824,7 @@ static int nl80211_dump_station(struct s
cb->args[1] = sta_idx;
err = skb->len;
out_err:
- cfg80211_unlock_rdev(dev);
- out_rtnl:
- rtnl_unlock();
+ nl80211_finish_netdev_dump(dev);
return err;
}
@@ -2121,28 +2144,12 @@ static int nl80211_dump_mpath(struct sk_
struct net_device *netdev;
u8 dst[ETH_ALEN];
u8 next_hop[ETH_ALEN];
- int ifidx = cb->args[0];
int path_idx = cb->args[1];
int err;
- if (!ifidx)
- ifidx = nl80211_get_ifidx(cb);
- if (ifidx < 0)
- return ifidx;
-
- rtnl_lock();
-
- netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
- if (!netdev) {
- err = -ENODEV;
- goto out_rtnl;
- }
-
- dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
- if (IS_ERR(dev)) {
- err = PTR_ERR(dev);
- goto out_rtnl;
- }
+ err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
+ if (err)
+ return err;
if (!dev->ops->dump_mpath) {
err = -EOPNOTSUPP;
@@ -2176,10 +2183,7 @@ static int nl80211_dump_mpath(struct sk_
cb->args[1] = path_idx;
err = skb->len;
out_err:
- cfg80211_unlock_rdev(dev);
- out_rtnl:
- rtnl_unlock();
-
+ nl80211_finish_netdev_dump(dev);
return err;
}
@@ -2986,25 +2990,12 @@ static int nl80211_dump_scan(struct sk_b
struct net_device *dev;
struct cfg80211_internal_bss *scan;
struct wireless_dev *wdev;
- int ifidx = cb->args[0];
int start = cb->args[1], idx = 0;
int err;
- if (!ifidx)
- ifidx = nl80211_get_ifidx(cb);
- if (ifidx < 0)
- return ifidx;
- cb->args[0] = ifidx;
-
- dev = dev_get_by_index(sock_net(skb->sk), ifidx);
- if (!dev)
- return -ENODEV;
-
- rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
- if (IS_ERR(rdev)) {
- err = PTR_ERR(rdev);
- goto out_put_netdev;
- }
+ err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
+ if (err)
+ return err;
wdev = dev->ieee80211_ptr;
@@ -3020,21 +3011,17 @@ static int nl80211_dump_scan(struct sk_b
cb->nlh->nlmsg_seq, NLM_F_MULTI,
rdev, wdev, scan) < 0) {
idx--;
- goto out;
+ break;
}
}
- out:
spin_unlock_bh(&rdev->bss_lock);
wdev_unlock(wdev);
cb->args[1] = idx;
- err = skb->len;
- cfg80211_unlock_rdev(rdev);
- out_put_netdev:
- dev_put(dev);
+ nl80211_finish_netdev_dump(rdev);
- return err;
+ return skb->len;
}
static int nl80211_send_survey(struct sk_buff *msg, u32 pid, u32 seq,
@@ -3080,29 +3067,12 @@ static int nl80211_dump_survey(struct sk
struct survey_info survey;
struct cfg80211_registered_device *dev;
struct net_device *netdev;
- int ifidx = cb->args[0];
int survey_idx = cb->args[1];
int res;
- if (!ifidx)
- ifidx = nl80211_get_ifidx(cb);
- if (ifidx < 0)
- return ifidx;
- cb->args[0] = ifidx;
-
- rtnl_lock();
-
- netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
- if (!netdev) {
- res = -ENODEV;
- goto out_rtnl;
- }
-
- dev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
- if (IS_ERR(dev)) {
- res = PTR_ERR(dev);
- goto out_rtnl;
- }
+ res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
+ if (res)
+ return res;
if (!dev->ops->dump_survey) {
res = -EOPNOTSUPP;
@@ -3130,10 +3100,7 @@ static int nl80211_dump_survey(struct sk
cb->args[1] = survey_idx;
res = skb->len;
out_err:
- cfg80211_unlock_rdev(dev);
- out_rtnl:
- rtnl_unlock();
^ permalink raw reply
* [PATCH 3/4] nl80211: use generic check for netif_running
From: Johannes Berg @ 2010-10-04 19:14 UTC (permalink / raw)
To: John Linville
Cc: netdev-u79uwXL29TY76Z2rM5mHXA,
linux-wireless-u79uwXL29TY76Z2rM5mHXA
In-Reply-To: <20101004191402.183055479@sipsolutions.net>
[-- Attachment #1: 014-nl80211-generic-running.patch --]
[-- Type: text/plain, Size: 11607 bytes --]
From: Johannes Berg <johannes.berg-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Use a new flag that requires the netdev to be
UP and use it to check instead of coding the
check into all functions that require it.
Signed-off-by: Johannes Berg <johannes.berg-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
net/wireless/nl80211.c | 97 ++++++++++++++-----------------------------------
1 file changed, 28 insertions(+), 69 deletions(-)
--- wireless-testing.orig/net/wireless/nl80211.c 2010-10-01 11:10:58.000000000 +0200
+++ wireless-testing/net/wireless/nl80211.c 2010-10-01 11:10:58.000000000 +0200
@@ -411,9 +411,6 @@ static int nl80211_key_allowed(struct wi
{
ASSERT_WDEV_LOCK(wdev);
- if (!netif_running(wdev->netdev))
- return -ENETDOWN;
-
switch (wdev->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
@@ -2035,11 +2032,6 @@ static int nl80211_new_station(struct sk
goto out;
}
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
-
err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, ¶ms);
out:
@@ -2253,9 +2245,6 @@ static int nl80211_set_mpath(struct sk_b
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
- if (!netif_running(dev))
- return -ENETDOWN;
-
return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
}
@@ -2281,9 +2270,6 @@ static int nl80211_new_mpath(struct sk_b
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
- if (!netif_running(dev))
- return -ENETDOWN;
-
return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
}
@@ -2775,9 +2761,6 @@ static int nl80211_trigger_scan(struct s
if (!rdev->ops->scan)
return -EOPNOTSUPP;
- if (!netif_running(dev))
- return -ENETDOWN;
-
if (rdev->scan_req)
return -EBUSY;
@@ -3246,9 +3229,6 @@ static int nl80211_authenticate(struct s
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
- if (!netif_running(dev))
- return -ENETDOWN;
-
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
chan = ieee80211_get_channel(&rdev->wiphy,
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
@@ -3379,9 +3359,6 @@ static int nl80211_associate(struct sk_b
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
- if (!netif_running(dev))
- return -ENETDOWN;
-
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
chan = ieee80211_get_channel(&rdev->wiphy,
@@ -3443,9 +3420,6 @@ static int nl80211_deauthenticate(struct
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
- if (!netif_running(dev))
- return -ENETDOWN;
-
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
@@ -3490,9 +3464,6 @@ static int nl80211_disassociate(struct s
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
- if (!netif_running(dev))
- return -ENETDOWN;
-
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
@@ -3546,9 +3517,6 @@ static int nl80211_join_ibss(struct sk_b
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
return -EOPNOTSUPP;
- if (!netif_running(dev))
- return -ENETDOWN;
-
wiphy = &rdev->wiphy;
if (info->attrs[NL80211_ATTR_MAC])
@@ -3623,9 +3591,6 @@ static int nl80211_leave_ibss(struct sk_
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
return -EOPNOTSUPP;
- if (!netif_running(dev))
- return -ENETDOWN;
-
return cfg80211_leave_ibss(rdev, dev, false);
}
@@ -3776,9 +3741,6 @@ static int nl80211_connect(struct sk_buf
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
- if (!netif_running(dev))
- return -ENETDOWN;
-
wiphy = &rdev->wiphy;
if (info->attrs[NL80211_ATTR_MAC])
@@ -3831,9 +3793,6 @@ static int nl80211_disconnect(struct sk_
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
- if (!netif_running(dev))
- return -ENETDOWN;
-
return cfg80211_disconnect(rdev, dev, reason, true);
}
@@ -3948,9 +3907,6 @@ static int nl80211_remain_on_channel(str
if (!rdev->ops->remain_on_channel)
return -EOPNOTSUPP;
- if (!netif_running(dev))
- return -ENETDOWN;
-
if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
channel_type = nla_get_u32(
info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
@@ -4010,9 +3966,6 @@ static int nl80211_cancel_remain_on_chan
if (!rdev->ops->cancel_remain_on_channel)
return -EOPNOTSUPP;
- if (!netif_running(dev))
- return -ENETDOWN;
-
cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
@@ -4157,9 +4110,6 @@ static int nl80211_tx_mgmt(struct sk_buf
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EOPNOTSUPP;
- if (!netif_running(dev))
- return -ENETDOWN;
-
if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
channel_type = nla_get_u32(
info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
@@ -4348,6 +4298,9 @@ out:
#define NL80211_FLAG_NEED_WIPHY 0x01
#define NL80211_FLAG_NEED_NETDEV 0x02
#define NL80211_FLAG_NEED_RTNL 0x04
+#define NL80211_FLAG_CHECK_NETDEV_UP 0x08
+#define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
+ NL80211_FLAG_CHECK_NETDEV_UP)
static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
struct genl_info *info)
@@ -4375,6 +4328,12 @@ static int nl80211_pre_doit(struct genl_
rtnl_unlock();
return err;
}
+ if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
+ !netif_running(dev)) {
+ if (rtnl)
+ rtnl_unlock();
+ return -ENETDOWN;
+ }
info->user_ptr[0] = rdev;
info->user_ptr[1] = dev;
}
@@ -4454,7 +4413,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_set_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4462,7 +4421,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_new_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4470,7 +4429,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_del_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4518,7 +4477,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_new_station,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4535,7 +4494,7 @@ static struct genl_ops nl80211_ops[] = {
.dumpit = nl80211_dump_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4543,7 +4502,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_set_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4551,7 +4510,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_new_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4609,7 +4568,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_trigger_scan,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4622,7 +4581,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_authenticate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4630,7 +4589,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_associate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4638,7 +4597,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_deauthenticate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4646,7 +4605,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_disassociate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4654,7 +4613,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_join_ibss,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4662,7 +4621,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_leave_ibss,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
#ifdef CONFIG_NL80211_TESTMODE
@@ -4680,7 +4639,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_connect,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4688,7 +4647,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_disconnect,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4733,7 +4692,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_remain_on_channel,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4741,7 +4700,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_cancel_remain_on_channel,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
@@ -4765,7 +4724,7 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_tx_mgmt,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
--
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^ permalink raw reply
* [PATCH 2/4] nl80211: use the new genetlink pre/post_doit hooks
From: Johannes Berg @ 2010-10-04 19:14 UTC (permalink / raw)
To: John Linville
Cc: netdev-u79uwXL29TY76Z2rM5mHXA,
linux-wireless-u79uwXL29TY76Z2rM5mHXA
In-Reply-To: <20101004191402.183055479@sipsolutions.net>
[-- Attachment #1: 013-nl80211-use-pre-post.patch --]
[-- Type: text/plain, Size: 78963 bytes --]
From: Johannes Berg <johannes.berg-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
This makes nl80211 use the new genetlink
pre_doit/post_doit hooks for locking and
checking the interface/wiphy index.
This is only partial and serves to demonstrate
the code improvement.
Signed-off-by: Johannes Berg <johannes.berg-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
net/wireless/nl80211.c | 1735 +++++++++++++++----------------------------------
1 file changed, 532 insertions(+), 1203 deletions(-)
--- wireless-testing.orig/net/wireless/nl80211.c 2010-10-01 00:15:08.000000000 +0200
+++ wireless-testing/net/wireless/nl80211.c 2010-10-01 11:09:34.000000000 +0200
@@ -23,6 +23,11 @@
#include "nl80211.h"
#include "reg.h"
+static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
+ struct genl_info *info);
+static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
+ struct genl_info *info);
+
/* the netlink family */
static struct genl_family nl80211_fam = {
.id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
@@ -31,6 +36,8 @@ static struct genl_family nl80211_fam =
.version = 1, /* no particular meaning now */
.maxattr = NL80211_ATTR_MAX,
.netnsok = true,
+ .pre_doit = nl80211_pre_doit,
+ .post_doit = nl80211_post_doit,
};
/* internal helper: get rdev and dev */
@@ -703,28 +710,18 @@ static int nl80211_dump_wiphy(struct sk_
static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
{
struct sk_buff *msg;
- struct cfg80211_registered_device *dev;
-
- dev = cfg80211_get_dev_from_info(info);
- if (IS_ERR(dev))
- return PTR_ERR(dev);
+ struct cfg80211_registered_device *dev = info->user_ptr[0];
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
- goto out_err;
-
- if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0)
- goto out_free;
+ return -ENOMEM;
- cfg80211_unlock_rdev(dev);
+ if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) {
+ nlmsg_free(msg);
+ return -ENOBUFS;
+ }
return genlmsg_reply(msg, info);
-
- out_free:
- nlmsg_free(msg);
- out_err:
- cfg80211_unlock_rdev(dev);
- return -ENOBUFS;
}
static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
@@ -813,24 +810,10 @@ static int __nl80211_set_channel(struct
static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *netdev;
- int result;
-
- rtnl_lock();
-
- result = get_rdev_dev_by_info_ifindex(info, &rdev, &netdev);
- if (result)
- goto unlock_rtnl;
-
- result = __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
-
- dev_put(netdev);
- cfg80211_unlock_rdev(rdev);
- unlock_rtnl:
- rtnl_unlock();
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *netdev = info->user_ptr[1];
- return result;
+ return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
}
static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
@@ -845,8 +828,6 @@ static int nl80211_set_wiphy(struct sk_b
u32 frag_threshold = 0, rts_threshold = 0;
u8 coverage_class = 0;
- rtnl_lock();
-
/*
* Try to find the wiphy and netdev. Normally this
* function shouldn't need the netdev, but this is
@@ -873,8 +854,7 @@ static int nl80211_set_wiphy(struct sk_b
rdev = __cfg80211_rdev_from_info(info);
if (IS_ERR(rdev)) {
mutex_unlock(&cfg80211_mutex);
- result = PTR_ERR(rdev);
- goto unlock;
+ return PTR_ERR(rdev);
}
wdev = NULL;
netdev = NULL;
@@ -1056,8 +1036,6 @@ static int nl80211_set_wiphy(struct sk_b
mutex_unlock(&rdev->mtx);
if (netdev)
dev_put(netdev);
- unlock:
- rtnl_unlock();
return result;
}
@@ -1137,33 +1115,20 @@ static int nl80211_dump_interface(struct
static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
{
struct sk_buff *msg;
- struct cfg80211_registered_device *dev;
- struct net_device *netdev;
- int err;
-
- err = get_rdev_dev_by_info_ifindex(info, &dev, &netdev);
- if (err)
- return err;
+ struct cfg80211_registered_device *dev = info->user_ptr[0];
+ struct net_device *netdev = info->user_ptr[1];
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
- goto out_err;
+ return -ENOMEM;
if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0,
- dev, netdev) < 0)
- goto out_free;
-
- dev_put(netdev);
- cfg80211_unlock_rdev(dev);
+ dev, netdev) < 0) {
+ nlmsg_free(msg);
+ return -ENOBUFS;
+ }
return genlmsg_reply(msg, info);
-
- out_free:
- nlmsg_free(msg);
- out_err:
- dev_put(netdev);
- cfg80211_unlock_rdev(dev);
- return -ENOBUFS;
}
static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
@@ -1223,39 +1188,29 @@ static int nl80211_valid_4addr(struct cf
static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct vif_params params;
int err;
enum nl80211_iftype otype, ntype;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
u32 _flags, *flags = NULL;
bool change = false;
memset(¶ms, 0, sizeof(params));
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
otype = ntype = dev->ieee80211_ptr->iftype;
if (info->attrs[NL80211_ATTR_IFTYPE]) {
ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
if (otype != ntype)
change = true;
- if (ntype > NL80211_IFTYPE_MAX) {
- err = -EINVAL;
- goto unlock;
- }
+ if (ntype > NL80211_IFTYPE_MAX)
+ return -EINVAL;
}
if (info->attrs[NL80211_ATTR_MESH_ID]) {
- if (ntype != NL80211_IFTYPE_MESH_POINT) {
- err = -EINVAL;
- goto unlock;
- }
+ if (ntype != NL80211_IFTYPE_MESH_POINT)
+ return -EINVAL;
params.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
change = true;
@@ -1266,20 +1221,18 @@ static int nl80211_set_interface(struct
change = true;
err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
if (err)
- goto unlock;
+ return err;
} else {
params.use_4addr = -1;
}
if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
- if (ntype != NL80211_IFTYPE_MONITOR) {
- err = -EINVAL;
- goto unlock;
- }
+ if (ntype != NL80211_IFTYPE_MONITOR)
+ return -EINVAL;
err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
&_flags);
if (err)
- goto unlock;
+ return err;
flags = &_flags;
change = true;
@@ -1293,17 +1246,12 @@ static int nl80211_set_interface(struct
if (!err && params.use_4addr != -1)
dev->ieee80211_ptr->use_4addr = params.use_4addr;
- unlock:
- dev_put(dev);
- cfg80211_unlock_rdev(rdev);
- unlock_rtnl:
- rtnl_unlock();
return err;
}
static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct vif_params params;
int err;
enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
@@ -1320,19 +1268,9 @@ static int nl80211_new_interface(struct
return -EINVAL;
}
- rtnl_lock();
-
- rdev = cfg80211_get_dev_from_info(info);
- if (IS_ERR(rdev)) {
- err = PTR_ERR(rdev);
- goto unlock_rtnl;
- }
-
if (!rdev->ops->add_virtual_intf ||
- !(rdev->wiphy.interface_modes & (1 << type))) {
- err = -EOPNOTSUPP;
- goto unlock;
- }
+ !(rdev->wiphy.interface_modes & (1 << type)))
+ return -EOPNOTSUPP;
if (type == NL80211_IFTYPE_MESH_POINT &&
info->attrs[NL80211_ATTR_MESH_ID]) {
@@ -1344,7 +1282,7 @@ static int nl80211_new_interface(struct
params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
if (err)
- goto unlock;
+ return err;
}
err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
@@ -1354,38 +1292,18 @@ static int nl80211_new_interface(struct
nla_data(info->attrs[NL80211_ATTR_IFNAME]),
type, err ? NULL : &flags, ¶ms);
- unlock:
- cfg80211_unlock_rdev(rdev);
- unlock_rtnl:
- rtnl_unlock();
return err;
}
static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
-
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->del_virtual_intf) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
- err = rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
+ if (!rdev->ops->del_virtual_intf)
+ return -EOPNOTSUPP;
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
- return err;
+ return rdev->ops->del_virtual_intf(&rdev->wiphy, dev);
}
struct get_key_cookie {
@@ -1438,9 +1356,9 @@ static void get_key_callback(void *c, st
static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
u8 key_idx = 0;
u8 *mac_addr = NULL;
struct get_key_cookie cookie = {
@@ -1458,30 +1376,17 @@ static int nl80211_get_key(struct sk_buf
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->get_key) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->get_key)
+ return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg) {
- err = -ENOMEM;
- goto out;
- }
+ if (!msg)
+ return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
NL80211_CMD_NEW_KEY);
-
- if (IS_ERR(hdr)) {
- err = PTR_ERR(hdr);
- goto free_msg;
- }
+ if (IS_ERR(hdr))
+ return PTR_ERR(hdr);
cookie.msg = msg;
cookie.idx = key_idx;
@@ -1501,28 +1406,21 @@ static int nl80211_get_key(struct sk_buf
goto nla_put_failure;
genlmsg_end(msg, hdr);
- err = genlmsg_reply(msg, info);
- goto out;
+ return genlmsg_reply(msg, info);
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
-
return err;
}
static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct key_parse key;
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
int (*func)(struct wiphy *wiphy, struct net_device *netdev,
u8 key_index);
@@ -1537,21 +1435,13 @@ static int nl80211_set_key(struct sk_buf
if (!key.def && !key.defmgmt)
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
if (key.def)
func = rdev->ops->set_default_key;
else
func = rdev->ops->set_default_mgmt_key;
- if (!func) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!func)
+ return -EOPNOTSUPP;
wdev_lock(dev->ieee80211_ptr);
err = nl80211_key_allowed(dev->ieee80211_ptr);
@@ -1568,21 +1458,14 @@ static int nl80211_set_key(struct sk_buf
#endif
wdev_unlock(dev->ieee80211_ptr);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-
- unlock_rtnl:
- rtnl_unlock();
-
return err;
}
static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
struct key_parse key;
u8 *mac_addr = NULL;
@@ -1596,21 +1479,11 @@ static int nl80211_new_key(struct sk_buf
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->add_key) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->add_key)
+ return -EOPNOTSUPP;
- if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, mac_addr)) {
- err = -EINVAL;
- goto out;
- }
+ if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, mac_addr))
+ return -EINVAL;
wdev_lock(dev->ieee80211_ptr);
err = nl80211_key_allowed(dev->ieee80211_ptr);
@@ -1619,20 +1492,14 @@ static int nl80211_new_key(struct sk_buf
mac_addr, &key.p);
wdev_unlock(dev->ieee80211_ptr);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
-
return err;
}
static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
u8 *mac_addr = NULL;
struct key_parse key;
@@ -1643,16 +1510,8 @@ static int nl80211_del_key(struct sk_buf
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->del_key) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->del_key)
+ return -EOPNOTSUPP;
wdev_lock(dev->ieee80211_ptr);
err = nl80211_key_allowed(dev->ieee80211_ptr);
@@ -1669,13 +1528,6 @@ static int nl80211_del_key(struct sk_buf
#endif
wdev_unlock(dev->ieee80211_ptr);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-
- unlock_rtnl:
- rtnl_unlock();
-
return err;
}
@@ -1683,36 +1535,25 @@ static int nl80211_addset_beacon(struct
{
int (*call)(struct wiphy *wiphy, struct net_device *dev,
struct beacon_parameters *info);
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct beacon_parameters params;
int haveinfo = 0;
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]))
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+ return -EOPNOTSUPP;
switch (info->genlhdr->cmd) {
case NL80211_CMD_NEW_BEACON:
/* these are required for NEW_BEACON */
if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
!info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
- !info->attrs[NL80211_ATTR_BEACON_HEAD]) {
- err = -EINVAL;
- goto out;
- }
+ !info->attrs[NL80211_ATTR_BEACON_HEAD])
+ return -EINVAL;
call = rdev->ops->add_beacon;
break;
@@ -1721,14 +1562,11 @@ static int nl80211_addset_beacon(struct
break;
default:
WARN_ON(1);
- err = -EOPNOTSUPP;
- goto out;
+ return -EOPNOTSUPP;
}
- if (!call) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!call)
+ return -EOPNOTSUPP;
memset(¶ms, 0, sizeof(params));
@@ -1758,53 +1596,25 @@ static int nl80211_addset_beacon(struct
haveinfo = 1;
}
- if (!haveinfo) {
- err = -EINVAL;
- goto out;
- }
-
- err = call(&rdev->wiphy, dev, ¶ms);
-
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
+ if (!haveinfo)
+ return -EINVAL;
- return err;
+ return call(&rdev->wiphy, dev, ¶ms);
}
static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
-
- rtnl_lock();
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->del_beacon) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->del_beacon)
+ return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
- err = -EOPNOTSUPP;
- goto out;
- }
- err = rdev->ops->del_beacon(&rdev->wiphy, dev);
-
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+ return -EOPNOTSUPP;
- return err;
+ return rdev->ops->del_beacon(&rdev->wiphy, dev);
}
static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
@@ -2001,12 +1811,12 @@ static int nl80211_dump_station(struct s
static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct station_info sinfo;
struct sk_buff *msg;
u8 *mac_addr = NULL;
+ int err;
memset(&sinfo, 0, sizeof(sinfo));
@@ -2015,42 +1825,25 @@ static int nl80211_get_station(struct sk
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->get_station) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->get_station)
+ return -EOPNOTSUPP;
err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
if (err)
- goto out;
+ return err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
- goto out;
+ return -ENOMEM;
if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
- dev, mac_addr, &sinfo) < 0)
- goto out_free;
+ dev, mac_addr, &sinfo) < 0) {
+ nlmsg_free(msg);
+ return -ENOBUFS;
+ }
- err = genlmsg_reply(msg, info);
- goto out;
-
- out_free:
- nlmsg_free(msg);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
-
- return err;
-}
+ return genlmsg_reply(msg, info);
+}
/*
* Get vlan interface making sure it is running and on the right wiphy.
@@ -2079,9 +1872,9 @@ static int get_vlan(struct genl_info *in
static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
struct station_parameters params;
u8 *mac_addr = NULL;
@@ -2119,12 +1912,6 @@ static int nl80211_set_station(struct sk
params.plink_action =
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
err = get_vlan(info, rdev, ¶ms.vlan);
if (err)
goto out;
@@ -2186,19 +1973,15 @@ static int nl80211_set_station(struct sk
out:
if (params.vlan)
dev_put(params.vlan);
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
return err;
}
static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
struct station_parameters params;
u8 *mac_addr = NULL;
@@ -2235,18 +2018,10 @@ static int nl80211_new_station(struct sk
if (parse_station_flags(info, ¶ms))
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
- err = -EINVAL;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+ return -EINVAL;
err = get_vlan(info, rdev, ¶ms.vlan);
if (err)
@@ -2270,52 +2045,28 @@ static int nl80211_new_station(struct sk
out:
if (params.vlan)
dev_put(params.vlan);
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
-
return err;
}
static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
u8 *mac_addr = NULL;
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
- err = -EINVAL;
- goto out;
- }
-
- if (!rdev->ops->del_station) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- err = rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+ return -EINVAL;
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ if (!rdev->ops->del_station)
+ return -EOPNOTSUPP;
- return err;
+ return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
}
static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
@@ -2442,9 +2193,9 @@ static int nl80211_dump_mpath(struct sk_
static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
struct mpath_info pinfo;
struct sk_buff *msg;
u8 *dst = NULL;
@@ -2457,53 +2208,33 @@ static int nl80211_get_mpath(struct sk_b
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->get_mpath) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->get_mpath)
+ return -EOPNOTSUPP;
- if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
+ return -EOPNOTSUPP;
err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
if (err)
- goto out;
+ return err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
- goto out;
+ return -ENOMEM;
if (nl80211_send_mpath(msg, info->snd_pid, info->snd_seq, 0,
- dev, dst, next_hop, &pinfo) < 0)
- goto out_free;
-
- err = genlmsg_reply(msg, info);
- goto out;
-
- out_free:
- nlmsg_free(msg);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ dev, dst, next_hop, &pinfo) < 0) {
+ nlmsg_free(msg);
+ return -ENOBUFS;
+ }
- return err;
+ return genlmsg_reply(msg, info);
}
static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
u8 *dst = NULL;
u8 *next_hop = NULL;
@@ -2516,42 +2247,22 @@ static int nl80211_set_mpath(struct sk_b
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->change_mpath) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!rdev->ops->change_mpath)
+ return -EOPNOTSUPP;
- err = rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
+ if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
+ return -EOPNOTSUPP;
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ if (!netif_running(dev))
+ return -ENETDOWN;
- return err;
+ return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
}
+
static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
u8 *dst = NULL;
u8 *next_hop = NULL;
@@ -2564,75 +2275,37 @@ static int nl80211_new_mpath(struct sk_b
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->add_mpath) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!rdev->ops->add_mpath)
+ return -EOPNOTSUPP;
- err = rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
+ if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
+ return -EOPNOTSUPP;
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ if (!netif_running(dev))
+ return -ENETDOWN;
- return err;
+ return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
}
static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
u8 *dst = NULL;
if (info->attrs[NL80211_ATTR_MAC])
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->del_mpath) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- err = rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
-
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ if (!rdev->ops->del_mpath)
+ return -EOPNOTSUPP;
- return err;
+ return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
}
static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct bss_parameters params;
memset(¶ms, 0, sizeof(params));
@@ -2660,32 +2333,14 @@ static int nl80211_set_bss(struct sk_buf
if (info->attrs[NL80211_ATTR_AP_ISOLATE])
params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->change_bss) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->change_bss)
+ return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- err = rdev->ops->change_bss(&rdev->wiphy, dev, ¶ms);
-
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+ return -EOPNOTSUPP;
- return err;
+ return rdev->ops->change_bss(&rdev->wiphy, dev, ¶ms);
}
static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
@@ -2764,37 +2419,26 @@ static int nl80211_req_set_reg(struct sk
static int nl80211_get_mesh_params(struct sk_buff *skb,
struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct mesh_config cur_params;
int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
void *hdr;
struct nlattr *pinfoattr;
struct sk_buff *msg;
- rtnl_lock();
-
- /* Look up our device */
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->get_mesh_params) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->get_mesh_params)
+ return -EOPNOTSUPP;
/* Get the mesh params */
err = rdev->ops->get_mesh_params(&rdev->wiphy, dev, &cur_params);
if (err)
- goto out;
+ return err;
/* Draw up a netlink message to send back */
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg) {
- err = -ENOBUFS;
- goto out;
- }
+ if (!msg)
+ return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
NL80211_CMD_GET_MESH_PARAMS);
if (!hdr)
@@ -2833,21 +2477,12 @@ static int nl80211_get_mesh_params(struc
cur_params.dot11MeshHWMPRootMode);
nla_nest_end(msg, pinfoattr);
genlmsg_end(msg, hdr);
- err = genlmsg_reply(msg, info);
- goto out;
+ return genlmsg_reply(msg, info);
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
- err = -EMSGSIZE;
- out:
- /* Cleanup */
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
-
- return err;
+ return -ENOBUFS;
}
#define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
@@ -2877,10 +2512,9 @@ static const struct nla_policy nl80211_m
static int nl80211_set_mesh_params(struct sk_buff *skb, struct genl_info *info)
{
- int err;
u32 mask;
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct mesh_config cfg;
struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
struct nlattr *parent_attr;
@@ -2892,16 +2526,8 @@ static int nl80211_set_mesh_params(struc
parent_attr, nl80211_meshconf_params_policy))
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
- if (!rdev->ops->set_mesh_params) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->set_mesh_params)
+ return -EOPNOTSUPP;
/* This makes sure that there aren't more than 32 mesh config
* parameters (otherwise our bitfield scheme would not work.) */
@@ -2947,16 +2573,7 @@ static int nl80211_set_mesh_params(struc
nla_get_u8);
/* Apply changes */
- err = rdev->ops->set_mesh_params(&rdev->wiphy, dev, &cfg, mask);
-
- out:
- /* cleanup */
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
-
- return err;
+ return rdev->ops->set_mesh_params(&rdev->wiphy, dev, &cfg, mask);
}
#undef FILL_IN_MESH_PARAM_IF_SET
@@ -3139,8 +2756,8 @@ static int validate_scan_freqs(struct nl
static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct cfg80211_scan_request *request;
struct cfg80211_ssid *ssid;
struct ieee80211_channel *channel;
@@ -3153,36 +2770,22 @@ static int nl80211_trigger_scan(struct s
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
wiphy = &rdev->wiphy;
- if (!rdev->ops->scan) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->scan)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
- if (rdev->scan_req) {
- err = -EBUSY;
- goto out;
- }
+ if (rdev->scan_req)
+ return -EBUSY;
if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
n_channels = validate_scan_freqs(
info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
- if (!n_channels) {
- err = -EINVAL;
- goto out;
- }
+ if (!n_channels)
+ return -EINVAL;
} else {
n_channels = 0;
@@ -3195,29 +2798,23 @@ static int nl80211_trigger_scan(struct s
nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
n_ssids++;
- if (n_ssids > wiphy->max_scan_ssids) {
- err = -EINVAL;
- goto out;
- }
+ if (n_ssids > wiphy->max_scan_ssids)
+ return -EINVAL;
if (info->attrs[NL80211_ATTR_IE])
ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
else
ie_len = 0;
- if (ie_len > wiphy->max_scan_ie_len) {
- err = -EINVAL;
- goto out;
- }
+ if (ie_len > wiphy->max_scan_ie_len)
+ return -EINVAL;
request = kzalloc(sizeof(*request)
+ sizeof(*ssid) * n_ssids
+ sizeof(channel) * n_channels
+ ie_len, GFP_KERNEL);
- if (!request) {
- err = -ENOMEM;
- goto out;
- }
+ if (!request)
+ return -ENOMEM;
if (n_ssids)
request->ssids = (void *)&request->channels[n_channels];
@@ -3305,18 +2902,11 @@ static int nl80211_trigger_scan(struct s
if (!err) {
nl80211_send_scan_start(rdev, dev);
dev_hold(dev);
- }
-
+ } else {
out_free:
- if (err) {
rdev->scan_req = NULL;
kfree(request);
}
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
return err;
}
@@ -3593,8 +3183,8 @@ static bool nl80211_valid_cipher_suite(u
static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct ieee80211_channel *chan;
const u8 *bssid, *ssid, *ie = NULL;
int err, ssid_len, ie_len = 0;
@@ -3636,12 +3226,6 @@ static int nl80211_authenticate(struct s
key.p.key = NULL;
}
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
if (key.idx >= 0) {
int i;
bool ok = false;
@@ -3651,35 +3235,25 @@ static int nl80211_authenticate(struct s
break;
}
}
- if (!ok) {
- err = -EINVAL;
- goto out;
- }
+ if (!ok)
+ return -EINVAL;
}
- if (!rdev->ops->auth) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->auth)
+ return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
chan = ieee80211_get_channel(&rdev->wiphy,
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
- if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) {
- err = -EINVAL;
- goto out;
- }
+ if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
+ return -EINVAL;
ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
@@ -3690,24 +3264,15 @@ static int nl80211_authenticate(struct s
}
auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
- if (!nl80211_valid_auth_type(auth_type)) {
- err = -EINVAL;
- goto out;
- }
+ if (!nl80211_valid_auth_type(auth_type))
+ return -EINVAL;
local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
- err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
- ssid, ssid_len, ie, ie_len,
- key.p.key, key.p.key_len, key.idx,
- local_state_change);
-
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
- return err;
+ return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
+ ssid, ssid_len, ie, ie_len,
+ key.p.key, key.p.key_len, key.idx,
+ local_state_change);
}
static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
@@ -3791,8 +3356,8 @@ static int nl80211_crypto_settings(struc
static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct cfg80211_crypto_settings crypto;
struct ieee80211_channel *chan;
const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
@@ -3807,36 +3372,22 @@ static int nl80211_associate(struct sk_b
!info->attrs[NL80211_ATTR_WIPHY_FREQ])
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->assoc) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->assoc)
+ return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
chan = ieee80211_get_channel(&rdev->wiphy,
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
- if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) {
- err = -EINVAL;
- goto out;
- }
+ if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
+ return -EINVAL;
ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
@@ -3851,10 +3402,8 @@ static int nl80211_associate(struct sk_b
nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
if (mfp == NL80211_MFP_REQUIRED)
use_mfp = true;
- else if (mfp != NL80211_MFP_NO) {
- err = -EINVAL;
- goto out;
- }
+ else if (mfp != NL80211_MFP_NO)
+ return -EINVAL;
}
if (info->attrs[NL80211_ATTR_PREV_BSSID])
@@ -3866,20 +3415,15 @@ static int nl80211_associate(struct sk_b
ssid, ssid_len, ie, ie_len, use_mfp,
&crypto);
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
return err;
}
static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
const u8 *ie = NULL, *bssid;
- int err, ie_len = 0;
+ int ie_len = 0;
u16 reason_code;
bool local_state_change;
@@ -3892,35 +3436,22 @@ static int nl80211_deauthenticate(struct
if (!info->attrs[NL80211_ATTR_REASON_CODE])
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->deauth) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->deauth)
+ return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
if (reason_code == 0) {
/* Reason Code 0 is reserved */
- err = -EINVAL;
- goto out;
+ return -EINVAL;
}
if (info->attrs[NL80211_ATTR_IE]) {
@@ -3930,23 +3461,16 @@ static int nl80211_deauthenticate(struct
local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
- err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
- local_state_change);
-
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
- return err;
+ return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
+ local_state_change);
}
static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
const u8 *ie = NULL, *bssid;
- int err, ie_len = 0;
+ int ie_len = 0;
u16 reason_code;
bool local_state_change;
@@ -3959,35 +3483,22 @@ static int nl80211_disassociate(struct s
if (!info->attrs[NL80211_ATTR_REASON_CODE])
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->disassoc) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->disassoc)
+ return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
if (reason_code == 0) {
/* Reason Code 0 is reserved */
- err = -EINVAL;
- goto out;
+ return -EINVAL;
}
if (info->attrs[NL80211_ATTR_IE]) {
@@ -3997,21 +3508,14 @@ static int nl80211_disassociate(struct s
local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
- err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
- local_state_change);
-
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
- return err;
+ return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
+ local_state_change);
}
static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct cfg80211_ibss_params ibss;
struct wiphy *wiphy;
struct cfg80211_cached_keys *connkeys = NULL;
@@ -4036,26 +3540,14 @@ static int nl80211_join_ibss(struct sk_b
return -EINVAL;
}
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->join_ibss) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->join_ibss)
+ return -EOPNOTSUPP;
- if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
wiphy = &rdev->wiphy;
@@ -4073,24 +3565,12 @@ static int nl80211_join_ibss(struct sk_b
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
if (!ibss.channel ||
ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
- ibss.channel->flags & IEEE80211_CHAN_DISABLED) {
- err = -EINVAL;
- goto out;
- }
+ ibss.channel->flags & IEEE80211_CHAN_DISABLED)
+ return -EINVAL;
ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
- if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
- connkeys = nl80211_parse_connkeys(rdev,
- info->attrs[NL80211_ATTR_KEYS]);
- if (IS_ERR(connkeys)) {
- err = PTR_ERR(connkeys);
- connkeys = NULL;
- goto out;
- }
- }
-
if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
u8 *rates =
nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
@@ -4100,10 +3580,8 @@ static int nl80211_join_ibss(struct sk_b
wiphy->bands[ibss.channel->band];
int i, j;
- if (n_rates == 0) {
- err = -EINVAL;
- goto out;
- }
+ if (n_rates == 0)
+ return -EINVAL;
for (i = 0; i < n_rates; i++) {
int rate = (rates[i] & 0x7f) * 5;
@@ -4116,60 +3594,39 @@ static int nl80211_join_ibss(struct sk_b
break;
}
}
- if (!found) {
- err = -EINVAL;
- goto out;
- }
+ if (!found)
+ return -EINVAL;
}
}
- err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
+ if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
+ connkeys = nl80211_parse_connkeys(rdev,
+ info->attrs[NL80211_ATTR_KEYS]);
+ if (IS_ERR(connkeys))
+ return PTR_ERR(connkeys);
+ }
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
+ err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
if (err)
kfree(connkeys);
- rtnl_unlock();
return err;
}
static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
- int err;
-
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->leave_ibss) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
- if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->leave_ibss)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
+ return -EOPNOTSUPP;
- err = cfg80211_leave_ibss(rdev, dev, false);
+ if (!netif_running(dev))
+ return -ENETDOWN;
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
- return err;
+ return cfg80211_leave_ibss(rdev, dev, false);
}
#ifdef CONFIG_NL80211_TESTMODE
@@ -4179,20 +3636,12 @@ static struct genl_multicast_group nl802
static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
if (!info->attrs[NL80211_ATTR_TESTDATA])
return -EINVAL;
- rtnl_lock();
-
- rdev = cfg80211_get_dev_from_info(info);
- if (IS_ERR(rdev)) {
- err = PTR_ERR(rdev);
- goto unlock_rtnl;
- }
-
err = -EOPNOTSUPP;
if (rdev->ops->testmode_cmd) {
rdev->testmode_info = info;
@@ -4202,10 +3651,6 @@ static int nl80211_testmode_do(struct sk
rdev->testmode_info = NULL;
}
- cfg80211_unlock_rdev(rdev);
-
- unlock_rtnl:
- rtnl_unlock();
return err;
}
@@ -4296,8 +3741,8 @@ EXPORT_SYMBOL(cfg80211_testmode_event);
static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct cfg80211_connect_params connect;
struct wiphy *wiphy;
struct cfg80211_cached_keys *connkeys = NULL;
@@ -4326,22 +3771,13 @@ static int nl80211_connect(struct sk_buf
NL80211_MAX_NR_CIPHER_SUITES);
if (err)
return err;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
wiphy = &rdev->wiphy;
@@ -4360,39 +3796,27 @@ static int nl80211_connect(struct sk_buf
ieee80211_get_channel(wiphy,
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
if (!connect.channel ||
- connect.channel->flags & IEEE80211_CHAN_DISABLED) {
- err = -EINVAL;
- goto out;
- }
+ connect.channel->flags & IEEE80211_CHAN_DISABLED)
+ return -EINVAL;
}
if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
connkeys = nl80211_parse_connkeys(rdev,
info->attrs[NL80211_ATTR_KEYS]);
- if (IS_ERR(connkeys)) {
- err = PTR_ERR(connkeys);
- connkeys = NULL;
- goto out;
- }
+ if (IS_ERR(connkeys))
+ return PTR_ERR(connkeys);
}
err = cfg80211_connect(rdev, dev, &connect, connkeys);
-
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
if (err)
kfree(connkeys);
- rtnl_unlock();
return err;
}
static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
- int err;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
u16 reason;
if (!info->attrs[NL80211_ATTR_REASON_CODE])
@@ -4403,36 +3827,19 @@ static int nl80211_disconnect(struct sk_
if (reason == 0)
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- err = cfg80211_disconnect(rdev, dev, reason, true);
+ if (!netif_running(dev))
+ return -ENETDOWN;
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
- return err;
+ return cfg80211_disconnect(rdev, dev, reason, true);
}
static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net *net;
int err;
u32 pid;
@@ -4442,43 +3849,26 @@ static int nl80211_wiphy_netns(struct sk
pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
- rtnl_lock();
-
- rdev = cfg80211_get_dev_from_info(info);
- if (IS_ERR(rdev)) {
- err = PTR_ERR(rdev);
- goto out_rtnl;
- }
-
net = get_net_ns_by_pid(pid);
- if (IS_ERR(net)) {
- err = PTR_ERR(net);
- goto out;
- }
+ if (IS_ERR(net))
+ return PTR_ERR(net);
err = 0;
/* check if anything to do */
- if (net_eq(wiphy_net(&rdev->wiphy), net))
- goto out_put_net;
+ if (!net_eq(wiphy_net(&rdev->wiphy), net))
+ err = cfg80211_switch_netns(rdev, net);
- err = cfg80211_switch_netns(rdev, net);
- out_put_net:
put_net(net);
- out:
- cfg80211_unlock_rdev(rdev);
- out_rtnl:
- rtnl_unlock();
return err;
}
static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_pmksa *pmksa) = NULL;
- int err;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
struct cfg80211_pmksa pmksa;
memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
@@ -4489,20 +3879,12 @@ static int nl80211_setdel_pmksa(struct s
if (!info->attrs[NL80211_ATTR_PMKID])
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
-
pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
switch (info->genlhdr->cmd) {
case NL80211_CMD_SET_PMKSA:
@@ -4516,62 +3898,32 @@ static int nl80211_setdel_pmksa(struct s
break;
}
- if (!rdev_ops) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- err = rdev_ops(&rdev->wiphy, dev, &pmksa);
-
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ if (!rdev_ops)
+ return -EOPNOTSUPP;
- return err;
+ return rdev_ops(&rdev->wiphy, dev, &pmksa);
}
static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- int err;
- struct net_device *dev;
-
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto out_rtnl;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- if (!rdev->ops->flush_pmksa) {
- err = -EOPNOTSUPP;
- goto out;
- }
-
- err = rdev->ops->flush_pmksa(&rdev->wiphy, dev);
-
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- out_rtnl:
- rtnl_unlock();
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- return err;
+ if (!rdev->ops->flush_pmksa)
+ return -EOPNOTSUPP;
+ return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
}
static int nl80211_remain_on_channel(struct sk_buff *skb,
struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct ieee80211_channel *chan;
struct sk_buff *msg;
void *hdr;
@@ -4593,21 +3945,11 @@ static int nl80211_remain_on_channel(str
if (!duration || !msecs_to_jiffies(duration) || duration > 5000)
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->remain_on_channel) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->remain_on_channel)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
channel_type = nla_get_u32(
@@ -4615,24 +3957,18 @@ static int nl80211_remain_on_channel(str
if (channel_type != NL80211_CHAN_NO_HT &&
channel_type != NL80211_CHAN_HT20 &&
channel_type != NL80211_CHAN_HT40PLUS &&
- channel_type != NL80211_CHAN_HT40MINUS) {
- err = -EINVAL;
- goto out;
- }
+ channel_type != NL80211_CHAN_HT40MINUS)
+ return -EINVAL;
}
freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
chan = rdev_freq_to_chan(rdev, freq, channel_type);
- if (chan == NULL) {
- err = -EINVAL;
- goto out;
- }
+ if (chan == NULL)
+ return -EINVAL;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg) {
- err = -ENOMEM;
- goto out;
- }
+ if (!msg)
+ return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
NL80211_CMD_REMAIN_ON_CHANNEL);
@@ -4651,58 +3987,35 @@ static int nl80211_remain_on_channel(str
NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
genlmsg_end(msg, hdr);
- err = genlmsg_reply(msg, info);
- goto out;
+
+ return genlmsg_reply(msg, info);
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
return err;
}
static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
u64 cookie;
- int err;
if (!info->attrs[NL80211_ATTR_COOKIE])
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->cancel_remain_on_channel) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->cancel_remain_on_channel)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
- err = rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
-
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
- return err;
+ return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
}
static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
@@ -4738,26 +4051,18 @@ static int nl80211_set_tx_bitrate_mask(s
struct genl_info *info)
{
struct nlattr *tb[NL80211_TXRATE_MAX + 1];
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct cfg80211_bitrate_mask mask;
- int err, rem, i;
- struct net_device *dev;
+ int rem, i;
+ struct net_device *dev = info->user_ptr[1];
struct nlattr *tx_rates;
struct ieee80211_supported_band *sband;
if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->set_bitrate_mask) {
- err = -EOPNOTSUPP;
- goto unlock;
- }
+ if (!rdev->ops->set_bitrate_mask)
+ return -EOPNOTSUPP;
memset(&mask, 0, sizeof(mask));
/* Default to all rates enabled */
@@ -4774,15 +4079,11 @@ static int nl80211_set_tx_bitrate_mask(s
nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
{
enum ieee80211_band band = nla_type(tx_rates);
- if (band < 0 || band >= IEEE80211_NUM_BANDS) {
- err = -EINVAL;
- goto unlock;
- }
+ if (band < 0 || band >= IEEE80211_NUM_BANDS)
+ return -EINVAL;
sband = rdev->wiphy.bands[band];
- if (sband == NULL) {
- err = -EINVAL;
- goto unlock;
- }
+ if (sband == NULL)
+ return -EINVAL;
nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
nla_len(tx_rates), nl80211_txattr_policy);
if (tb[NL80211_TXRATE_LEGACY]) {
@@ -4790,29 +4091,19 @@ static int nl80211_set_tx_bitrate_mask(s
sband,
nla_data(tb[NL80211_TXRATE_LEGACY]),
nla_len(tb[NL80211_TXRATE_LEGACY]));
- if (mask.control[band].legacy == 0) {
- err = -EINVAL;
- goto unlock;
- }
+ if (mask.control[band].legacy == 0)
+ return -EINVAL;
}
}
- err = rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
-
- unlock:
- dev_put(dev);
- cfg80211_unlock_rdev(rdev);
- unlock_rtnl:
- rtnl_unlock();
- return err;
+ return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
}
static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
- int err;
if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
return -EINVAL;
@@ -4820,44 +4111,28 @@ static int nl80211_register_mgmt(struct
if (info->attrs[NL80211_ATTR_FRAME_TYPE])
frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+ return -EOPNOTSUPP;
/* not much point in registering if we can't reply */
- if (!rdev->ops->mgmt_tx) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->mgmt_tx)
+ return -EOPNOTSUPP;
- err = cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
+ return cfg80211_mlme_register_mgmt(dev->ieee80211_ptr, info->snd_pid,
frame_type,
nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
- return err;
}
static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
- struct net_device *dev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
struct ieee80211_channel *chan;
enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
bool channel_type_valid = false;
@@ -4871,31 +4146,19 @@ static int nl80211_tx_mgmt(struct sk_buf
!info->attrs[NL80211_ATTR_WIPHY_FREQ])
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
- if (!rdev->ops->mgmt_tx) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->mgmt_tx)
+ return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
- dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
+ return -EOPNOTSUPP;
- if (!netif_running(dev)) {
- err = -ENETDOWN;
- goto out;
- }
+ if (!netif_running(dev))
+ return -ENETDOWN;
if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
channel_type = nla_get_u32(
@@ -4903,25 +4166,19 @@ static int nl80211_tx_mgmt(struct sk_buf
if (channel_type != NL80211_CHAN_NO_HT &&
channel_type != NL80211_CHAN_HT20 &&
channel_type != NL80211_CHAN_HT40PLUS &&
- channel_type != NL80211_CHAN_HT40MINUS) {
- err = -EINVAL;
- goto out;
- }
+ channel_type != NL80211_CHAN_HT40MINUS)
+ return -EINVAL;
channel_type_valid = true;
}
freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
chan = rdev_freq_to_chan(rdev, freq, channel_type);
- if (chan == NULL) {
- err = -EINVAL;
- goto out;
- }
+ if (chan == NULL)
+ return -EINVAL;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg) {
- err = -ENOMEM;
- goto out;
- }
+ if (!msg)
+ return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
NL80211_CMD_FRAME);
@@ -4941,110 +4198,72 @@ static int nl80211_tx_mgmt(struct sk_buf
NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
genlmsg_end(msg, hdr);
- err = genlmsg_reply(msg, info);
- goto out;
+ return genlmsg_reply(msg, info);
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
- out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
return err;
}
static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
u8 ps_state;
bool state;
int err;
- if (!info->attrs[NL80211_ATTR_PS_STATE]) {
- err = -EINVAL;
- goto out;
- }
+ if (!info->attrs[NL80211_ATTR_PS_STATE])
+ return -EINVAL;
ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
- if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) {
- err = -EINVAL;
- goto out;
- }
-
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
+ if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
+ return -EINVAL;
wdev = dev->ieee80211_ptr;
- if (!rdev->ops->set_power_mgmt) {
- err = -EOPNOTSUPP;
- goto unlock_rdev;
- }
+ if (!rdev->ops->set_power_mgmt)
+ return -EOPNOTSUPP;
state = (ps_state == NL80211_PS_ENABLED) ? true : false;
if (state == wdev->ps)
- goto unlock_rdev;
-
- wdev->ps = state;
-
- if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, wdev->ps,
- wdev->ps_timeout))
- /* assume this means it's off */
- wdev->ps = false;
-
-unlock_rdev:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-unlock_rtnl:
- rtnl_unlock();
+ return 0;
-out:
+ err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
+ wdev->ps_timeout);
+ if (!err)
+ wdev->ps = state;
return err;
}
static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
enum nl80211_ps_state ps_state;
struct wireless_dev *wdev;
- struct net_device *dev;
+ struct net_device *dev = info->user_ptr[1];
struct sk_buff *msg;
void *hdr;
int err;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
wdev = dev->ieee80211_ptr;
- if (!rdev->ops->set_power_mgmt) {
- err = -EOPNOTSUPP;
- goto out;
- }
+ if (!rdev->ops->set_power_mgmt)
+ return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg) {
- err = -ENOMEM;
- goto out;
- }
+ if (!msg)
+ return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
NL80211_CMD_GET_POWER_SAVE);
if (!hdr) {
- err = -ENOMEM;
+ err = -ENOBUFS;
goto free_msg;
}
@@ -5056,22 +4275,12 @@ static int nl80211_get_power_save(struct
NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
genlmsg_end(msg, hdr);
- err = genlmsg_reply(msg, info);
- goto out;
+ return genlmsg_reply(msg, info);
-nla_put_failure:
+ nla_put_failure:
err = -ENOBUFS;
-
-free_msg:
+ free_msg:
nlmsg_free(msg);
-
-out:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
-
-unlock_rtnl:
- rtnl_unlock();
-
return err;
}
@@ -5085,43 +4294,24 @@ nl80211_attr_cqm_policy[NL80211_ATTR_CQM
static int nl80211_set_cqm_rssi(struct genl_info *info,
s32 threshold, u32 hysteresis)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev;
- struct net_device *dev;
- int err;
+ struct net_device *dev = info->user_ptr[1];
if (threshold > 0)
return -EINVAL;
- rtnl_lock();
-
- err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
- if (err)
- goto unlock_rtnl;
-
wdev = dev->ieee80211_ptr;
- if (!rdev->ops->set_cqm_rssi_config) {
- err = -EOPNOTSUPP;
- goto unlock_rdev;
- }
+ if (!rdev->ops->set_cqm_rssi_config)
+ return -EOPNOTSUPP;
if (wdev->iftype != NL80211_IFTYPE_STATION &&
- wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) {
- err = -EOPNOTSUPP;
- goto unlock_rdev;
- }
-
- err = rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
- threshold, hysteresis);
-
- unlock_rdev:
- cfg80211_unlock_rdev(rdev);
- dev_put(dev);
- unlock_rtnl:
- rtnl_unlock();
+ wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
+ return -EOPNOTSUPP;
- return err;
+ return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
+ threshold, hysteresis);
}
static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
@@ -5155,6 +4345,54 @@ out:
return err;
}
+#define NL80211_FLAG_NEED_WIPHY 0x01
+#define NL80211_FLAG_NEED_NETDEV 0x02
+#define NL80211_FLAG_NEED_RTNL 0x04
+
+static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev;
+ struct net_device *dev;
+ int err;
+ bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
+
+ if (rtnl)
+ rtnl_lock();
+
+ if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
+ rdev = cfg80211_get_dev_from_info(info);
+ if (IS_ERR(rdev)) {
+ if (rtnl)
+ rtnl_unlock();
+ return PTR_ERR(rdev);
+ }
+ info->user_ptr[0] = rdev;
+ } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
+ err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
+ if (err) {
+ if (rtnl)
+ rtnl_unlock();
+ return err;
+ }
+ info->user_ptr[0] = rdev;
+ info->user_ptr[1] = dev;
+ }
+
+ return 0;
+}
+
+static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
+ struct genl_info *info)
+{
+ if (info->user_ptr[0])
+ cfg80211_unlock_rdev(info->user_ptr[0]);
+ if (info->user_ptr[1])
+ dev_put(info->user_ptr[1]);
+ if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
+ rtnl_unlock();
+}
+
static struct genl_ops nl80211_ops[] = {
{
.cmd = NL80211_CMD_GET_WIPHY,
@@ -5162,12 +4400,14 @@ static struct genl_ops nl80211_ops[] = {
.dumpit = nl80211_dump_wiphy,
.policy = nl80211_policy,
/* can be retrieved by unprivileged users */
+ .internal_flags = NL80211_FLAG_NEED_WIPHY,
},
{
.cmd = NL80211_CMD_SET_WIPHY,
.doit = nl80211_set_wiphy,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_INTERFACE,
@@ -5175,90 +4415,119 @@ static struct genl_ops nl80211_ops[] = {
.dumpit = nl80211_dump_interface,
.policy = nl80211_policy,
/* can be retrieved by unprivileged users */
+ .internal_flags = NL80211_FLAG_NEED_NETDEV,
},
{
.cmd = NL80211_CMD_SET_INTERFACE,
.doit = nl80211_set_interface,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_NEW_INTERFACE,
.doit = nl80211_new_interface,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_WIPHY |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_INTERFACE,
.doit = nl80211_del_interface,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_KEY,
.doit = nl80211_get_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_KEY,
.doit = nl80211_set_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_NEW_KEY,
.doit = nl80211_new_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_KEY,
.doit = nl80211_del_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_BEACON,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.doit = nl80211_addset_beacon,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_NEW_BEACON,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.doit = nl80211_addset_beacon,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_BEACON,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.doit = nl80211_del_beacon,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_STATION,
.doit = nl80211_get_station,
.dumpit = nl80211_dump_station,
.policy = nl80211_policy,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_STATION,
.doit = nl80211_set_station,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_NEW_STATION,
.doit = nl80211_new_station,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_STATION,
.doit = nl80211_del_station,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_MPATH,
@@ -5266,30 +4535,40 @@ static struct genl_ops nl80211_ops[] = {
.dumpit = nl80211_dump_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_MPATH,
.doit = nl80211_set_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_NEW_MPATH,
.doit = nl80211_new_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_MPATH,
.doit = nl80211_del_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_BSS,
.doit = nl80211_set_bss,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_REG,
@@ -5314,18 +4593,24 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_get_mesh_params,
.policy = nl80211_policy,
/* can be retrieved by unprivileged users */
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_MESH_PARAMS,
.doit = nl80211_set_mesh_params,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_TRIGGER_SCAN,
.doit = nl80211_trigger_scan,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_SCAN,
@@ -5337,36 +4622,48 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_authenticate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_ASSOCIATE,
.doit = nl80211_associate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEAUTHENTICATE,
.doit = nl80211_deauthenticate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DISASSOCIATE,
.doit = nl80211_disassociate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_JOIN_IBSS,
.doit = nl80211_join_ibss,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_LEAVE_IBSS,
.doit = nl80211_leave_ibss,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
#ifdef CONFIG_NL80211_TESTMODE
{
@@ -5374,6 +4671,8 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_testmode_do,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_WIPHY |
+ NL80211_FLAG_NEED_RTNL,
},
#endif
{
@@ -5381,18 +4680,24 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_connect,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DISCONNECT,
.doit = nl80211_disconnect,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_WIPHY_NETNS,
.doit = nl80211_wiphy_netns,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_WIPHY |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_SURVEY,
@@ -5404,72 +4709,96 @@ static struct genl_ops nl80211_ops[] = {
.doit = nl80211_setdel_pmksa,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_PMKSA,
.doit = nl80211_setdel_pmksa,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_FLUSH_PMKSA,
.doit = nl80211_flush_pmksa,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
.doit = nl80211_remain_on_channel,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
.doit = nl80211_cancel_remain_on_channel,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
.doit = nl80211_set_tx_bitrate_mask,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_REGISTER_FRAME,
.doit = nl80211_register_mgmt,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_FRAME,
.doit = nl80211_tx_mgmt,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_POWER_SAVE,
.doit = nl80211_set_power_save,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_POWER_SAVE,
.doit = nl80211_get_power_save,
.policy = nl80211_policy,
/* can be retrieved by unprivileged users */
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_CQM,
.doit = nl80211_set_cqm,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_CHANNEL,
.doit = nl80211_set_channel,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV |
+ NL80211_FLAG_NEED_RTNL,
},
};
--
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^ permalink raw reply
* Re: [PATCH 8/8] net: Implement socketat.
From: Eric W. Biederman @ 2010-10-04 19:07 UTC (permalink / raw)
To: hadi
Cc: Daniel Lezcano, Pavel Emelyanov, linux-kernel, Linux Containers,
netdev, netfilter-devel, linux-fsdevel, Linus Torvalds,
Michael Kerrisk, Ulrich Drepper, Al Viro, David Miller,
Serge E. Hallyn, Pavel Emelyanov, Ben Greear, Matt Helsley,
Jonathan Corbet, Sukadev Bhattiprolu, Jan Engelhardt,
Patrick McHardy
In-Reply-To: <1286113441.3812.229.camel@bigi>
jamal <hadi@cyberus.ca> writes:
> One thing still confuses me...
> The app control point is in namespace0. I still want to be able to
> "boot" namespaces first and maybe a few seconds later do a socketat()...
> and create devices, tcp sockets etc. I suspect create_ns(namespace-name)
> would involve:
> * open /proc/self/ns/net (namespace-name)
> * unshare the netns
> Is this correct?
Almost.
create should be:
* verify namespace-name is not already in use
* mkdir -p /var/run/netns/<namespace-name>
* unshare the netns
* mount --bind /proc/self/ns/net /var/run/netns/<namespace-name>
Are you talking about an replacing something that used to use the linux
vrf patches that are floating around?
Eric
^ permalink raw reply
* Re: [patch v2] ipvs: IPv6 tunnel mode
From: Patrick McHardy @ 2010-10-04 19:06 UTC (permalink / raw)
To: Simon Horman
Cc: lvs-devel, netfilter-devel, netdev, Hans Schillstrom,
Julian Anastasov, Julius Volz, Wensong Zhang
In-Reply-To: <20100930012239.GA18392@verge.net.au>
Am 30.09.2010 03:22, schrieb Simon Horman:
> On Mon, Sep 27, 2010 at 10:59:14PM +0900, Simon Horman wrote:
>> From: Julian Anastasov <ja@ssi.bg>
>>
>> Tunnel mode for IPv6 doesn't work.
>
> Patrick, can you please drop this patch for now.
> Hans has found some problems with it.
>
> http://archive.linuxvirtualserver.org/html/lvs-devel/2010-09/msg00073.html
Sure, just resend once you consider it ready for inclusion.
^ permalink raw reply
* Re: [PATCH nf-next] ipt_LOG: add bufferisation to call printk() once
From: Patrick McHardy @ 2010-10-04 18:58 UTC (permalink / raw)
To: Eric Dumazet; +Cc: netdev, Netfilter Development Mailinglist
In-Reply-To: <1286032059.2582.2338.camel@edumazet-laptop>
Am 02.10.2010 17:07, schrieb Eric Dumazet:
> ipt_LOG & ip6t_LOG use lot of calls to printk() and use a lock in a hope
> several cpus wont mix their output in syslog.
>
> printk() being very expensive [1], its better to call it once, on a
> prebuilt and complete line. Also, with mixed IPv4 and IPv6 trafic,
> separate IPv4/IPv6 locks dont avoid garbage.
>
> I used an allocation of a 1024 bytes structure, sort of seq_printf() but
> with a fixed size limit.
> Use a static buffer if dynamic allocation failed.
>
> Emit a once time alert if buffer size happens to be too short.
>
> [1]: printk() has various features like printk_delay()...
Nice work, applied, thanks Eric.
^ permalink raw reply
* Re: [PATCH net-next] nf_nat: make find/put static
From: Patrick McHardy @ 2010-10-04 18:54 UTC (permalink / raw)
To: Stephen Hemminger; +Cc: David Miller, netfilter-devel, netdev
In-Reply-To: <20101002141736.0a31bcd7@s6510>
Am 02.10.2010 07:17, schrieb Stephen Hemminger:
> The functions nf_nat_proto_find_get and nf_nat_proto_put are
> only used internally in nf_nat_core. This might break some out
> of tree NAT module.
Applied, thanks Stephen.
^ permalink raw reply
* Linux Kernel Development - A Practical Approach
From: Linux "Kernel" Explorer @ 2010-10-04 18:50 UTC (permalink / raw)
To: kernelnewbies, linux-kernel, netdev, linux-fsdevel
[-- Attachment #1: Type: text/plain, Size: 790 bytes --]
Hello Everyone,
I am reading 'Linux Kernel Development' by Robert Love these days.
This book takes you on a theoretical journey of the linux kernel
world.Though the book is good but I do have my share of concerns.
- I Understand theory is important but how to gain some practical
experience.How to learn to apply the rules you have learnt in the book. I
have got no clue.
- Trying to dive into the kernel code and expecting things to make sense
would be a little to premature.I will have to jump into the code ...but I
guess its too early.
- Should I be trying my hand at System programming first / Kernel user
side to get a hand of things.Would it be a good idea ?
Would really appreciate your suggestion & Advice.
Thanks in advance,
Linux "Kernel" Explorer.
[-- Attachment #2: Type: text/html, Size: 946 bytes --]
^ permalink raw reply
* [PATCH] AF_UNIX: Implement SO_TIMESTAMP and SO_TIMETAMPNS on Unix sockets
From: Alban Crequy @ 2010-10-04 18:48 UTC (permalink / raw)
Cc: Lennart Poettering, Alban Crequy, David S. Miller,
Stephen Hemminger, Eric Dumazet, Cyrill Gorcunov, Alexey Dobriyan,
linux-kernel, netdev
In-Reply-To: <20101004194734.6a1caf3e@chocolatine.cbg.collabora.co.uk>
Userspace applications can already request to receive timestamps with:
setsockopt(sockfd, SOL_SOCKET, SO_TIMESTAMP, ...)
Although setsockopt() returns zero (success), timestamps are not added to the
ancillary data. This patch fixes that on SOCK_DGRAM and SOCK_SEQPACKET Unix
sockets.
Signed-off-by: Alban Crequy <alban.crequy@collabora.co.uk>
---
net/unix/af_unix.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 617bea4..b03baa8 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1484,6 +1484,8 @@ restart:
goto restart;
}
+ if (sock_flag(other, SOCK_RCVTSTAMP))
+ __net_timestamp(skb);
skb_queue_tail(&other->sk_receive_queue, skb);
unix_state_unlock(other);
other->sk_data_ready(other, len);
@@ -1697,6 +1699,9 @@ static int unix_dgram_recvmsg(struct kiocb *iocb, struct socket *sock,
if (err)
goto out_free;
+ if (sock_flag(sk, SOCK_RCVTSTAMP))
+ __sock_recv_timestamp(msg, sk, skb);
+
if (!siocb->scm) {
siocb->scm = &tmp_scm;
memset(&tmp_scm, 0, sizeof(tmp_scm));
--
1.7.1
^ permalink raw reply related
* Re: [patch v5 00/12] IPVS: SIP Persistence Engine
From: Patrick McHardy @ 2010-10-04 18:47 UTC (permalink / raw)
To: Simon Horman
Cc: lvs-devel, netdev, netfilter, netfilter-devel, Jan Engelhardt,
Stephen Hemminger, Wensong Zhang, Julian Anastasov
In-Reply-To: <20101004134624.963907470@akiko.akashicho.tokyo.vergenet.net>
Am 04.10.2010 15:46, schrieb Simon Horman:
> CODE AVAILABILITY
>
> The kernel patches (12) are available in git as the pe-5 branch of
> git://git.kernel.org/pub/scm/linux/kernel/git/horms/lvs-test-2.6.git
Pulled, thanks Simon. I get a warning in ip_vs_pe_sip.c however,
please send a fix for this on top.
net/netfilter/ipvs/ip_vs_pe_sip.c:11: warning: 'ip_vs_dbg_callid'
defined but not used
Thanks!
^ permalink raw reply
* Re: [PATCH] AF_UNIX: Implement SO_TIMESTAMP and SO_TIMETAMPNS on Unix sockets
From: Alban Crequy @ 2010-10-04 18:47 UTC (permalink / raw)
To: Eric Dumazet
Cc: Lennart Poettering, David S. Miller, Stephen Hemminger,
Cyrill Gorcunov, Alexey Dobriyan, linux-kernel, netdev,
Alban Crequy
In-Reply-To: <1286215789.2381.2.camel@edumazet-laptop>
Le Mon, 04 Oct 2010 20:09:49 +0200,
Eric Dumazet <eric.dumazet@gmail.com> a écrit :
> Le lundi 04 octobre 2010 à 19:01 +0100, Alban Crequy a écrit :
> > Userspace applications can already request to receive timestamps
> > with: setsockopt(sockfd, SOL_SOCKET, SO_TIMESTAMP, ...)
> >
> > Although setsockopt() returns zero (success), timestamps are not
> > added to the ancillary data. This patch fixes that on SOCK_DGRAM
> > and SOCK_SEQPACKET Unix sockets.
> >
> > Signed-off-by: Alban Crequy <alban.crequy@collabora.co.uk>
> > ---
> > net/unix/af_unix.c | 3 +++
> > 1 files changed, 3 insertions(+), 0 deletions(-)
> >
> > diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
> > index 617bea4..bca0c1e 100644
> > --- a/net/unix/af_unix.c
> > +++ b/net/unix/af_unix.c
> > @@ -1697,6 +1697,9 @@ static int unix_dgram_recvmsg(struct kiocb
> > *iocb, struct socket *sock, if (err)
> > goto out_free;
> >
> > + if (sock_flag(sk, SOCK_RCVTSTAMP))
> > + __sock_recv_timestamp(msg, sk, skb);
> > +
> > if (!siocb->scm) {
> > siocb->scm = &tmp_scm;
> > memset(&tmp_scm, 0, sizeof(tmp_scm));
>
> Hmm, but how is set skb->tstamp ?
>
> I think its zero at this point, so __sock_recv_timestamp() use current
> time, not time of send().
>
> gettimeofday() might be better/cheaper :)
You're right, I just tested it and it was the time of reception. Thanks
for the review.
^ permalink raw reply
* Re: ixgbe: normalize frag_list usage
From: David Miller @ 2010-10-04 18:32 UTC (permalink / raw)
To: alexander.h.duyck
Cc: jeffrey.t.kirsher, jesse.brandeburg, bruce.w.allan, netdev
In-Reply-To: <4CAA1722.7070405@intel.com>
From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Mon, 04 Oct 2010 11:04:18 -0700
> This will not work for RSC due to the fact that it assumes only one
> RSC context is active per ring and that is not the case. There can be
> multiple RSC combined flows interlaced on the ring.
Thanks for looking at this Alexander.
I must have mis-understood what the current code is doing.
It looked like RSC packets always show up in-order in the RX ring.
And that they are scanned for by simply combining any sequence of
non-EOP packets up to and including the final EOP one into a frag
list.
Are the RSC packets are identified via something else entirely?
^ permalink raw reply
* Re: [PATCH] AF_UNIX: Implement SO_TIMESTAMP and SO_TIMETAMPNS on Unix sockets
From: Eric Dumazet @ 2010-10-04 18:09 UTC (permalink / raw)
To: Alban Crequy
Cc: Lennart Poettering, David S. Miller, Stephen Hemminger,
Cyrill Gorcunov, Alexey Dobriyan, linux-kernel, netdev
In-Reply-To: <1286215294-29166-1-git-send-email-alban.crequy@collabora.co.uk>
Le lundi 04 octobre 2010 à 19:01 +0100, Alban Crequy a écrit :
> Userspace applications can already request to receive timestamps with:
> setsockopt(sockfd, SOL_SOCKET, SO_TIMESTAMP, ...)
>
> Although setsockopt() returns zero (success), timestamps are not added to the
> ancillary data. This patch fixes that on SOCK_DGRAM and SOCK_SEQPACKET Unix
> sockets.
>
> Signed-off-by: Alban Crequy <alban.crequy@collabora.co.uk>
> ---
> net/unix/af_unix.c | 3 +++
> 1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
> index 617bea4..bca0c1e 100644
> --- a/net/unix/af_unix.c
> +++ b/net/unix/af_unix.c
> @@ -1697,6 +1697,9 @@ static int unix_dgram_recvmsg(struct kiocb *iocb, struct socket *sock,
> if (err)
> goto out_free;
>
> + if (sock_flag(sk, SOCK_RCVTSTAMP))
> + __sock_recv_timestamp(msg, sk, skb);
> +
> if (!siocb->scm) {
> siocb->scm = &tmp_scm;
> memset(&tmp_scm, 0, sizeof(tmp_scm));
Hmm, but how is set skb->tstamp ?
I think its zero at this point, so __sock_recv_timestamp() use current
time, not time of send().
gettimeofday() might be better/cheaper :)
^ permalink raw reply
* [PATCH] AF_UNIX: Implement SO_TIMESTAMP and SO_TIMETAMPNS on Unix sockets
From: Alban Crequy @ 2010-10-04 18:01 UTC (permalink / raw)
Cc: Lennart Poettering, Alban Crequy, David S. Miller,
Stephen Hemminger, Eric Dumazet, Cyrill Gorcunov, Alexey Dobriyan,
linux-kernel, netdev
In-Reply-To: <20101004190049.783f14ab@chocolatine.cbg.collabora.co.uk>
Userspace applications can already request to receive timestamps with:
setsockopt(sockfd, SOL_SOCKET, SO_TIMESTAMP, ...)
Although setsockopt() returns zero (success), timestamps are not added to the
ancillary data. This patch fixes that on SOCK_DGRAM and SOCK_SEQPACKET Unix
sockets.
Signed-off-by: Alban Crequy <alban.crequy@collabora.co.uk>
---
net/unix/af_unix.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 617bea4..bca0c1e 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1697,6 +1697,9 @@ static int unix_dgram_recvmsg(struct kiocb *iocb, struct socket *sock,
if (err)
goto out_free;
+ if (sock_flag(sk, SOCK_RCVTSTAMP))
+ __sock_recv_timestamp(msg, sk, skb);
+
if (!siocb->scm) {
siocb->scm = &tmp_scm;
memset(&tmp_scm, 0, sizeof(tmp_scm));
--
1.7.1
^ permalink raw reply related
* Re: ixgbe: normalize frag_list usage
From: Alexander Duyck @ 2010-10-04 18:04 UTC (permalink / raw)
To: David Miller
Cc: Kirsher, Jeffrey T, Brandeburg, Jesse, Allan, Bruce W,
netdev@vger.kernel.org
In-Reply-To: <20101003.235400.229759758.davem@davemloft.net>
David Miller wrote:
> Signed-off-by: David S. Miller <davem@davemloft.net>
> ---
>
> Basically I want to get the whole tree to consistently use
> the convention that the frag list is built as packets arrive
> by using "skb->prev" of the head skb to track the tail member
> of the frag list.
>
> This will allow me to do something like:
>
> struct sk_buff {
> union {
> struct {
> struct sk_buff *next;
> struct sk_buff *prev;
> };
> struct {
> struct sk_buff *frag_next;
> struct sk_buff *frag_tail_tracker;
> };
> }
> ...
> }
>
> And have all frag_list code use these members consistently.
>
> While doing this patch I noticed that there are some left-over bits in
> the IXGBEVF driver that builds these IXGBE style (before my patch)
> skb->prev RSC chains.
>
> But nothing other than the RX ring shutdown code processes them, so
> likely if they are created they will leak or cause some other kind of
> problem.
>
> Please take a look, thanks.
>
> diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
> index 5cebc37..434c9fa 100644
> --- a/drivers/net/ixgbe/ixgbe.h
> +++ b/drivers/net/ixgbe/ixgbe.h
> @@ -181,6 +181,7 @@ struct ixgbe_ring {
> struct ixgbe_queue_stats stats;
> unsigned long reinit_state;
> int numa_node;
> + struct sk_buff *rsc_skb; /* RSC packet being built */
> u64 rsc_count; /* stat for coalesced packets */
> u64 rsc_flush; /* stats for flushed packets */
> u32 restart_queue; /* track tx queue restarts */
This will not work for RSC due to the fact that it assumes only one RSC
context is active per ring and that is not the case. There can be
multiple RSC combined flows interlaced on the ring.
It occurs to me that RSC needs the inverse of what you need for frag
list handling. You state that you need the next and tail pointers,
while RSC really needs the prev and head pointers. One possible
solution for all this would be to just reverse the logic a bit.
What you are setting up right now is essentially a head based layout
based on the idea that th head it the component you will have access to.
RSC on the other hand is a tail based layout. If we were to overload
skb->next so that it pointed at head from tail in ixgbe then we could
make RSC function, and probably even improve the performance a bit by
getting rid of the extra RSC transform at the end of creating RSC packets.
Below I have made suggestions based on a tail based approach if we
overloaded the next pointer on the tail packet to point to the head.
> diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
> index c35e13c..43987a4 100644
> --- a/drivers/net/ixgbe/ixgbe_main.c
> +++ b/drivers/net/ixgbe/ixgbe_main.c
> @@ -1130,36 +1130,6 @@ static inline u32 ixgbe_get_rsc_count(union ixgbe_adv_rx_desc *rx_desc)
> IXGBE_RXDADV_RSCCNT_SHIFT;
> }
>
> -/**
> - * ixgbe_transform_rsc_queue - change rsc queue into a full packet
> - * @skb: pointer to the last skb in the rsc queue
> - * @count: pointer to number of packets coalesced in this context
> - *
> - * This function changes a queue full of hw rsc buffers into a completed
> - * packet. It uses the ->prev pointers to find the first packet and then
> - * turns it into the frag list owner.
> - **/
> -static inline struct sk_buff *ixgbe_transform_rsc_queue(struct sk_buff *skb,
> - u64 *count)
> -{
> - unsigned int frag_list_size = 0;
> -
> - while (skb->prev) {
> - struct sk_buff *prev = skb->prev;
> - frag_list_size += skb->len;
> - skb->prev = NULL;
> - skb = prev;
> - *count += 1;
> - }
> -
> - skb_shinfo(skb)->frag_list = skb->next;
> - skb->next = NULL;
> - skb->len += frag_list_size;
> - skb->data_len += frag_list_size;
> - skb->truesize += frag_list_size;
> - return skb;
> -}
> -
> struct ixgbe_rsc_cb {
> dma_addr_t dma;
> bool delay_unmap;
So this could probably go since we wouldn't need it for the new approach.
> @@ -1216,10 +1186,13 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
> prefetch(skb->data);
> rx_buffer_info->skb = NULL;
>
> + if (!(staterr & IXGBE_RXD_STAT_EOP)) {
> + rx_ring->rsc_skb = skb;
> + rx_ring->rsc_count++;
> + }
> if (rx_buffer_info->dma) {
> if ((adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) &&
> - (!(staterr & IXGBE_RXD_STAT_EOP)) &&
> - (!(skb->prev))) {
> + rx_ring->rsc_skb == skb) {
> /*
> * When HWRSC is enabled, delay unmapping
> * of the first packet. It carries the
This bit of code is based on the flawed assumption that RSC doesn't have
other packets interlaced with is not true.
> @@ -1279,9 +1252,12 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
> }
>
> if (staterr & IXGBE_RXD_STAT_EOP) {
> - if (skb->prev)
> - skb = ixgbe_transform_rsc_queue(skb,
> - &(rx_ring->rsc_count));
> + if (rx_ring->rsc_skb) {
> + skb = rx_ring->rsc_skb;
> + rx_ring->rsc_skb = NULL;
> +
> + skb->prev = NULL;
> + }
> if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
> if (IXGBE_RSC_CB(skb)->delay_unmap) {
> dma_unmap_single(&pdev->dev,
So this bit of code could be changed to something like:
if (skb->next) {
skb = skb->next;
skb->frag_tail_tracker->next == NULL;
}
> @@ -1307,8 +1283,22 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
> next_buffer->skb = skb;
> next_buffer->dma = 0;
> } else {
> - skb->next = next_buffer->skb;
> - skb->next->prev = skb;
> + struct sk_buff *head = rx_ring->rsc_skb;
> + struct sk_buff *next = next_buffer->skb;
> +
> + if (!skb_shinfo(head)->frag_list) {
> + skb_shinfo(head)->frag_list = next;
> + } else {
> + head->prev->next = next;
> + }
> +
> + /* ->prev tracks the last skb in the frag_list */
> + head->prev = next;
> + rx_ring->rsc_count++;
> +
> + head->len += next->len;
> + head->data_len += next->len;
> + head->truesize += next->len;
> }
> rx_ring->non_eop_descs++;
> goto next_desc;
This piece is a bit trickier, the len/data_len/truesize addition needs
to be done on all packets and it looks like it was only done on the
non-EOP packets which may be an issue. My guess would be that it would
probably work if we added something along of the lines of the following
before the EOP check:
if (skb->next) {
skb->next->len += skb->len;
skb->next->data_len += skb->data_len;
skb->next->truesize += skb->truesize;
rx_ring->rsc_count++;
}
My thoughts for the rest of the code for the non-EOP case would be
something more along the lines of:
if (skb->next) {
next_buffer->skb->next = skb->next;
skb->next->frag_tail_tracker = next_buffer->skb;
skb->next = next_buffer->skb;
}
> --
> To unsubscribe from this list: send the line "unsubscribe netdev" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply
* Re: 2.6.36-rc6-git2: Reported regressions 2.6.34 -> 2.6.35
From: Rafał Miłecki @ 2010-10-04 18:01 UTC (permalink / raw)
To: Rafael J. Wysocki
Cc: Linux Kernel Mailing List, Maciej Rutecki, Florian Mickler,
Andrew Morton, Linus Torvalds, Kernel Testers List,
Network Development, Linux ACPI, Linux PM List, Linux SCSI List,
Linux Wireless List, DRI
In-Reply-To: <OjxVjYbf_EJ.A.ReC.pTPqMB@chimera>
2010/10/3 Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org>:
> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=19302
> Subject : PROBLEM: kernel crash on USB-modem (Huawei E1750) hangup.
> Submitter : O01eg <O01eg-o+MxOtu4lMCHXe+LvDLADg@public.gmane.org>
> Date : 2010-09-26 19:50 (8 days old)
> Message-ID : <op.vjnn1up1yohvy1@localhost>
> References : http://marc.info/?l=linux-kernel&m=128553111709569&w=2
Comment from bugzilla:
> I got this bug at 2.6.34-gentoo-r6 and 2.6.36-rc5. Other kernels were not
> checked.
Doesn't sound like regression.
--
Rafał
^ permalink raw reply
* Re: [PATCH] AF_UNIX: Implement SO_TIMESTAMP and SO_TIMETAMPNS on Unix sockets
From: Alban Crequy @ 2010-10-04 18:00 UTC (permalink / raw)
To: Eric Dumazet
Cc: Lennart Poettering, David S. Miller, Stephen Hemminger,
Cyrill Gorcunov, Alexey Dobriyan, linux-kernel, netdev,
Alban Crequy
In-Reply-To: <1286210504.18293.370.camel@edumazet-laptop>
Le Mon, 04 Oct 2010 18:41:44 +0200,
Eric Dumazet <eric.dumazet@gmail.com> a écrit :
> Le lundi 04 octobre 2010 à 16:38 +0100, Alban Crequy a écrit :
> > Userspace applications can already request to receive timestamps
> > with: setsockopt(sockfd, SOL_SOCKET, SO_TIMESTAMP, ...)
> >
> > Although setsockopt() returns zero (success), timestamps are not
> > added to the ancillary data. This patch fixes that.
> >
> > Signed-off-by: Alban Crequy <alban.crequy@collabora.co.uk>
> > ---
> > net/unix/af_unix.c | 4 ++++
> > 1 files changed, 4 insertions(+), 0 deletions(-)
> >
> > diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
> > index 617bea4..142ccea 100644
> > --- a/net/unix/af_unix.c
> > +++ b/net/unix/af_unix.c
> > @@ -1697,6 +1697,8 @@ static int unix_dgram_recvmsg(struct kiocb
> > *iocb, struct socket *sock, if (err)
> > goto out_free;
> >
> > + sock_recv_timestamp(msg, sk, skb);
> > +
> > if (!siocb->scm) {
> > siocb->scm = &tmp_scm;
> > memset(&tmp_scm, 0, sizeof(tmp_scm));
> > @@ -1877,6 +1879,8 @@ static int unix_stream_recvmsg(struct kiocb
> > *iocb, struct socket *sock, copied += chunk;
> > size -= chunk;
> >
> > + sock_recv_timestamp(msg, sk, skb);
> > +
> > /* Mark read part of skb as used */
> > if (!(flags & MSG_PEEK)) {
> > skb_pull(skb, chunk);
>
> Are you sure its needed for unix_stream case ?
I was about to say it does not cost anything to add it...
> We dont do this for TCP for example, only for datagrams.
>
> As shown in the past, sock_recv_timestamp() is a bit expensive because
> it takes care of many possible options.
Is it really expensive? It looks like a few flag checks in an inline
function to me.
> It would be better to use in AF_UNIX case (only software timestamps) :
>
> Solution 1)
> if (sock_flag(sk, SOCK_RCVTSTAMP))
> __sock_recv_timestamp(msg, sk, skb);
>
> Solution 2)
> Or something already used elsewhere since 2.6.35 and commit
> 767dd03369ac1 (net: speedup sock_recv_ts_and_drops()) :
>
> sock_recv_ts_and_drops(msg, sk, skb);
>
>
> I would vote for the 1) solution
The patch in the next email implements the 1) solution on SOCK_DGRAM and
SOCK_SEQPACKET (without SOCK_STREAM).
--
Alban
^ permalink raw reply
* RE: To GRO or not to GRO...
From: Tantilov, Emil S @ 2010-10-04 17:48 UTC (permalink / raw)
To: David Miller, sysoleg@yandex.ru
Cc: richard@sauce.co.nz, netdev@vger.kernel.org
In-Reply-To: <20101003.003129.193711520.davem@davemloft.net>
>-----Original Message-----
>From: netdev-owner@vger.kernel.org [mailto:netdev-owner@vger.kernel.org] On
>Behalf Of David Miller
>Sent: Sunday, October 03, 2010 12:31 AM
>To: sysoleg@yandex.ru
>Cc: richard@sauce.co.nz; netdev@vger.kernel.org
>Subject: Re: To GRO or not to GRO...
>
>From: "\"Oleg A. Arkhangelsky\"" <sysoleg@yandex.ru>
>Date: Sun, 03 Oct 2010 11:18:46 +0400
>
>>
>>
>> 03.10.2010, 03:17, "Richard Scobie" <richard@sauce.co.nz>:
>>
>>> In the README for ixgbe-2.1.4, is says:
>>>
>>> " Disable GRO when routing/bridging
>>> ---------------------------------
>>> Due to a known kernel issue, GRO must be turned off when
>>> routing/bridging.
>>> GRO can be turned off via ethtool."
>>>
>>
>> This information is true for LRO, not GRO.
>
>Right.
>
>> I believe that this appeared when ixgbe was converted from LRO
>> to GRO and all occurrences of LRO was blindly replaced by GRO
>> everywhere.
>
>Someome please submit a patch to fix this, thanks.
The information referenced above is from the README included with the out-of-tree ixgbe driver which we provide for download at e1000.sf.net.
The in-kernel docs are accurate AFAICT.
Thanks,
Emil
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