* [PATCH net-next 0/4] rtnl: send notification in do_setlink()
@ 2014-09-01 14:07 Nicolas Dichtel
2014-09-01 14:07 ` [PATCH net-next 1/4] rtnl/do_setlink(): set modified when IFLA_TXQLEN is updated Nicolas Dichtel
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: Nicolas Dichtel @ 2014-09-01 14:07 UTC (permalink / raw)
To: netdev; +Cc: davem
This serie ensures to call the notifier chain and to send a netlink message when
a change is done by do_setlink().
The three first patches mainly prepare the last one, which do this change.
net/core/rtnetlink.c | 66 +++++++++++++++++++++++++++++++++-------------------
1 file changed, 42 insertions(+), 24 deletions(-)
Comments are welcome.
Regards,
Nicolas
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH net-next 1/4] rtnl/do_setlink(): set modified when IFLA_TXQLEN is updated
2014-09-01 14:07 [PATCH net-next 0/4] rtnl: send notification in do_setlink() Nicolas Dichtel
@ 2014-09-01 14:07 ` Nicolas Dichtel
2014-09-01 14:07 ` [PATCH net-next 2/4] rtnl/do_setlink(): set modified when IFLA_LINKMODE " Nicolas Dichtel
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Nicolas Dichtel @ 2014-09-01 14:07 UTC (permalink / raw)
To: netdev; +Cc: davem, Nicolas Dichtel
The only effect of this patch is to print a warning if IFLA_TXQLEN is updated
and a following change fails.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
---
net/core/rtnetlink.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index f0493e3b7471..5bbaf74bf457 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1611,8 +1611,14 @@ static int do_setlink(const struct sk_buff *skb,
modified = 1;
}
- if (tb[IFLA_TXQLEN])
- dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
+ if (tb[IFLA_TXQLEN]) {
+ unsigned long value = nla_get_u32(tb[IFLA_TXQLEN]);
+
+ if (dev->tx_queue_len ^ value)
+ modified = 1;
+
+ dev->tx_queue_len = value;
+ }
if (tb[IFLA_OPERSTATE])
set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
--
1.9.0
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH net-next 2/4] rtnl/do_setlink(): set modified when IFLA_LINKMODE is updated
2014-09-01 14:07 [PATCH net-next 0/4] rtnl: send notification in do_setlink() Nicolas Dichtel
2014-09-01 14:07 ` [PATCH net-next 1/4] rtnl/do_setlink(): set modified when IFLA_TXQLEN is updated Nicolas Dichtel
@ 2014-09-01 14:07 ` Nicolas Dichtel
2014-09-01 14:07 ` [PATCH net-next 3/4] rtnl/do_setlink(): last arg is now a set of flags Nicolas Dichtel
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Nicolas Dichtel @ 2014-09-01 14:07 UTC (permalink / raw)
To: netdev; +Cc: davem, Nicolas Dichtel
The only effect of this patch is to print a warning if IFLA_LINKMODE is updated
and a following change fails.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
---
net/core/rtnetlink.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 5bbaf74bf457..2bd9fb15b987 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1624,8 +1624,12 @@ static int do_setlink(const struct sk_buff *skb,
set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
if (tb[IFLA_LINKMODE]) {
+ unsigned char value = nla_get_u8(tb[IFLA_LINKMODE]);
+
write_lock_bh(&dev_base_lock);
- dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
+ if (dev->link_mode ^ value)
+ modified = 1;
+ dev->link_mode = value;
write_unlock_bh(&dev_base_lock);
}
--
1.9.0
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH net-next 3/4] rtnl/do_setlink(): last arg is now a set of flags
2014-09-01 14:07 [PATCH net-next 0/4] rtnl: send notification in do_setlink() Nicolas Dichtel
2014-09-01 14:07 ` [PATCH net-next 1/4] rtnl/do_setlink(): set modified when IFLA_TXQLEN is updated Nicolas Dichtel
2014-09-01 14:07 ` [PATCH net-next 2/4] rtnl/do_setlink(): set modified when IFLA_LINKMODE " Nicolas Dichtel
@ 2014-09-01 14:07 ` Nicolas Dichtel
2014-09-01 14:07 ` [PATCH net-next 4/4] rtnl/do_setlink(): notify when a netdev is modified Nicolas Dichtel
2014-09-02 19:58 ` [PATCH net-next 0/4] rtnl: send notification in do_setlink() David Miller
4 siblings, 0 replies; 6+ messages in thread
From: Nicolas Dichtel @ 2014-09-01 14:07 UTC (permalink / raw)
To: netdev; +Cc: davem, Nicolas Dichtel
There is no functional changes with this commit, it only prepares the next one.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
---
net/core/rtnetlink.c | 43 ++++++++++++++++++++++---------------------
1 file changed, 22 insertions(+), 21 deletions(-)
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 2bd9fb15b987..7d84db3e0597 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1481,9 +1481,10 @@ static int do_set_master(struct net_device *dev, int ifindex)
return 0;
}
+#define DO_SETLINK_MODIFIED 0x01
static int do_setlink(const struct sk_buff *skb,
struct net_device *dev, struct ifinfomsg *ifm,
- struct nlattr **tb, char *ifname, int modified)
+ struct nlattr **tb, char *ifname, int status)
{
const struct net_device_ops *ops = dev->netdev_ops;
int err;
@@ -1502,7 +1503,7 @@ static int do_setlink(const struct sk_buff *skb,
put_net(net);
if (err)
goto errout;
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
}
if (tb[IFLA_MAP]) {
@@ -1531,7 +1532,7 @@ static int do_setlink(const struct sk_buff *skb,
if (err < 0)
goto errout;
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
}
if (tb[IFLA_ADDRESS]) {
@@ -1551,19 +1552,19 @@ static int do_setlink(const struct sk_buff *skb,
kfree(sa);
if (err)
goto errout;
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
}
if (tb[IFLA_MTU]) {
err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU]));
if (err < 0)
goto errout;
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
}
if (tb[IFLA_GROUP]) {
dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP]));
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
}
/*
@@ -1575,7 +1576,7 @@ static int do_setlink(const struct sk_buff *skb,
err = dev_change_name(dev, ifname);
if (err < 0)
goto errout;
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
}
if (tb[IFLA_IFALIAS]) {
@@ -1583,7 +1584,7 @@ static int do_setlink(const struct sk_buff *skb,
nla_len(tb[IFLA_IFALIAS]));
if (err < 0)
goto errout;
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
}
if (tb[IFLA_BROADCAST]) {
@@ -1601,21 +1602,21 @@ static int do_setlink(const struct sk_buff *skb,
err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER]));
if (err)
goto errout;
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
}
if (tb[IFLA_CARRIER]) {
err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER]));
if (err)
goto errout;
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
}
if (tb[IFLA_TXQLEN]) {
unsigned long value = nla_get_u32(tb[IFLA_TXQLEN]);
if (dev->tx_queue_len ^ value)
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
dev->tx_queue_len = value;
}
@@ -1628,7 +1629,7 @@ static int do_setlink(const struct sk_buff *skb,
write_lock_bh(&dev_base_lock);
if (dev->link_mode ^ value)
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
dev->link_mode = value;
write_unlock_bh(&dev_base_lock);
}
@@ -1644,7 +1645,7 @@ static int do_setlink(const struct sk_buff *skb,
err = do_setvfinfo(dev, attr);
if (err < 0)
goto errout;
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
}
}
err = 0;
@@ -1674,7 +1675,7 @@ static int do_setlink(const struct sk_buff *skb,
err = ops->ndo_set_vf_port(dev, vf, port);
if (err < 0)
goto errout;
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
}
}
err = 0;
@@ -1692,7 +1693,7 @@ static int do_setlink(const struct sk_buff *skb,
err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port);
if (err < 0)
goto errout;
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
}
if (tb[IFLA_AF_SPEC]) {
@@ -1709,13 +1710,13 @@ static int do_setlink(const struct sk_buff *skb,
if (err < 0)
goto errout;
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
}
}
err = 0;
errout:
- if (err < 0 && modified)
+ if (err < 0 && status & DO_SETLINK_MODIFIED)
net_warn_ratelimited("A link change request failed with some changes committed already. Interface %s may have been left with an inconsistent configuration, please check.\n",
dev->name);
@@ -1999,7 +2000,7 @@ replay:
}
if (dev) {
- int modified = 0;
+ int status = 0;
if (nlh->nlmsg_flags & NLM_F_EXCL)
return -EEXIST;
@@ -2014,7 +2015,7 @@ replay:
err = ops->changelink(dev, tb, data);
if (err < 0)
return err;
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
}
if (linkinfo[IFLA_INFO_SLAVE_DATA]) {
@@ -2025,10 +2026,10 @@ replay:
tb, slave_data);
if (err < 0)
return err;
- modified = 1;
+ status |= DO_SETLINK_MODIFIED;
}
- return do_setlink(skb, dev, ifm, tb, ifname, modified);
+ return do_setlink(skb, dev, ifm, tb, ifname, status);
}
if (!(nlh->nlmsg_flags & NLM_F_CREATE)) {
--
1.9.0
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH net-next 4/4] rtnl/do_setlink(): notify when a netdev is modified
2014-09-01 14:07 [PATCH net-next 0/4] rtnl: send notification in do_setlink() Nicolas Dichtel
` (2 preceding siblings ...)
2014-09-01 14:07 ` [PATCH net-next 3/4] rtnl/do_setlink(): last arg is now a set of flags Nicolas Dichtel
@ 2014-09-01 14:07 ` Nicolas Dichtel
2014-09-02 19:58 ` [PATCH net-next 0/4] rtnl: send notification in do_setlink() David Miller
4 siblings, 0 replies; 6+ messages in thread
From: Nicolas Dichtel @ 2014-09-01 14:07 UTC (permalink / raw)
To: netdev; +Cc: davem, Nicolas Dichtel
Depending on which parameters were updated, the changes were not propagated via
the notifier chain and netlink.
The new flag has been set only when the change did not cause a call to the
notifier chain and/or to the netlink notification functions.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
---
net/core/rtnetlink.c | 35 +++++++++++++++++++++--------------
1 file changed, 21 insertions(+), 14 deletions(-)
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 7d84db3e0597..a6882686ca3a 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1482,6 +1482,8 @@ static int do_set_master(struct net_device *dev, int ifindex)
}
#define DO_SETLINK_MODIFIED 0x01
+/* notify flag means notify + modified. */
+#define DO_SETLINK_NOTIFY 0x03
static int do_setlink(const struct sk_buff *skb,
struct net_device *dev, struct ifinfomsg *ifm,
struct nlattr **tb, char *ifname, int status)
@@ -1532,7 +1534,7 @@ static int do_setlink(const struct sk_buff *skb,
if (err < 0)
goto errout;
- status |= DO_SETLINK_MODIFIED;
+ status |= DO_SETLINK_NOTIFY;
}
if (tb[IFLA_ADDRESS]) {
@@ -1564,7 +1566,7 @@ static int do_setlink(const struct sk_buff *skb,
if (tb[IFLA_GROUP]) {
dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP]));
- status |= DO_SETLINK_MODIFIED;
+ status |= DO_SETLINK_NOTIFY;
}
/*
@@ -1584,7 +1586,7 @@ static int do_setlink(const struct sk_buff *skb,
nla_len(tb[IFLA_IFALIAS]));
if (err < 0)
goto errout;
- status |= DO_SETLINK_MODIFIED;
+ status |= DO_SETLINK_NOTIFY;
}
if (tb[IFLA_BROADCAST]) {
@@ -1616,7 +1618,7 @@ static int do_setlink(const struct sk_buff *skb,
unsigned long value = nla_get_u32(tb[IFLA_TXQLEN]);
if (dev->tx_queue_len ^ value)
- status |= DO_SETLINK_MODIFIED;
+ status |= DO_SETLINK_NOTIFY;
dev->tx_queue_len = value;
}
@@ -1629,7 +1631,7 @@ static int do_setlink(const struct sk_buff *skb,
write_lock_bh(&dev_base_lock);
if (dev->link_mode ^ value)
- status |= DO_SETLINK_MODIFIED;
+ status |= DO_SETLINK_NOTIFY;
dev->link_mode = value;
write_unlock_bh(&dev_base_lock);
}
@@ -1645,7 +1647,7 @@ static int do_setlink(const struct sk_buff *skb,
err = do_setvfinfo(dev, attr);
if (err < 0)
goto errout;
- status |= DO_SETLINK_MODIFIED;
+ status |= DO_SETLINK_NOTIFY;
}
}
err = 0;
@@ -1675,7 +1677,7 @@ static int do_setlink(const struct sk_buff *skb,
err = ops->ndo_set_vf_port(dev, vf, port);
if (err < 0)
goto errout;
- status |= DO_SETLINK_MODIFIED;
+ status |= DO_SETLINK_NOTIFY;
}
}
err = 0;
@@ -1693,7 +1695,7 @@ static int do_setlink(const struct sk_buff *skb,
err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port);
if (err < 0)
goto errout;
- status |= DO_SETLINK_MODIFIED;
+ status |= DO_SETLINK_NOTIFY;
}
if (tb[IFLA_AF_SPEC]) {
@@ -1710,15 +1712,20 @@ static int do_setlink(const struct sk_buff *skb,
if (err < 0)
goto errout;
- status |= DO_SETLINK_MODIFIED;
+ status |= DO_SETLINK_NOTIFY;
}
}
err = 0;
errout:
- if (err < 0 && status & DO_SETLINK_MODIFIED)
- net_warn_ratelimited("A link change request failed with some changes committed already. Interface %s may have been left with an inconsistent configuration, please check.\n",
- dev->name);
+ if (status & DO_SETLINK_MODIFIED) {
+ if (status & DO_SETLINK_NOTIFY)
+ netdev_state_change(dev);
+
+ if (err < 0)
+ net_warn_ratelimited("A link change request failed with some changes committed already. Interface %s may have been left with an inconsistent configuration, please check.\n",
+ dev->name);
+ }
return err;
}
@@ -2015,7 +2022,7 @@ replay:
err = ops->changelink(dev, tb, data);
if (err < 0)
return err;
- status |= DO_SETLINK_MODIFIED;
+ status |= DO_SETLINK_NOTIFY;
}
if (linkinfo[IFLA_INFO_SLAVE_DATA]) {
@@ -2026,7 +2033,7 @@ replay:
tb, slave_data);
if (err < 0)
return err;
- status |= DO_SETLINK_MODIFIED;
+ status |= DO_SETLINK_NOTIFY;
}
return do_setlink(skb, dev, ifm, tb, ifname, status);
--
1.9.0
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH net-next 0/4] rtnl: send notification in do_setlink()
2014-09-01 14:07 [PATCH net-next 0/4] rtnl: send notification in do_setlink() Nicolas Dichtel
` (3 preceding siblings ...)
2014-09-01 14:07 ` [PATCH net-next 4/4] rtnl/do_setlink(): notify when a netdev is modified Nicolas Dichtel
@ 2014-09-02 19:58 ` David Miller
4 siblings, 0 replies; 6+ messages in thread
From: David Miller @ 2014-09-02 19:58 UTC (permalink / raw)
To: nicolas.dichtel; +Cc: netdev
From: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Date: Mon, 1 Sep 2014 16:07:25 +0200
> This serie ensures to call the notifier chain and to send a netlink message when
> a change is done by do_setlink().
>
> The three first patches mainly prepare the last one, which do this change.
This looks fine, series applied, thanks.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2014-09-02 19:58 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-09-01 14:07 [PATCH net-next 0/4] rtnl: send notification in do_setlink() Nicolas Dichtel
2014-09-01 14:07 ` [PATCH net-next 1/4] rtnl/do_setlink(): set modified when IFLA_TXQLEN is updated Nicolas Dichtel
2014-09-01 14:07 ` [PATCH net-next 2/4] rtnl/do_setlink(): set modified when IFLA_LINKMODE " Nicolas Dichtel
2014-09-01 14:07 ` [PATCH net-next 3/4] rtnl/do_setlink(): last arg is now a set of flags Nicolas Dichtel
2014-09-01 14:07 ` [PATCH net-next 4/4] rtnl/do_setlink(): notify when a netdev is modified Nicolas Dichtel
2014-09-02 19:58 ` [PATCH net-next 0/4] rtnl: send notification in do_setlink() David Miller
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