* [PATCH net-next v2 1/8] ieee802154: rename struct ieee802154_addr to *_sa
[not found] ` <1394828644-19898-1-git-send-email-phoebe.buckheister-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
@ 2014-03-14 20:23 ` Phoebe Buckheister
2014-03-14 20:23 ` [PATCH net-next v2 2/8] ieee802154: add address struct with proper endiannes and some operations Phoebe Buckheister
` (5 subsequent siblings)
6 siblings, 0 replies; 10+ messages in thread
From: Phoebe Buckheister @ 2014-03-14 20:23 UTC (permalink / raw)
To: netdev-u79uwXL29TY76Z2rM5mHXA
Cc: davem-fT/PcQaiUtIeIZ0/mPfg9Q,
linux-zigbee-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f
The struct as currently defined uses host byte order for some fields,
and most big endian/EUI display byte order for other fields. Inside the
stack, endianness should ideally match network byte order where possible
to minimize the number of byteswaps done in critical paths, but this
patch does not address this; it is only preparatory.
Signed-off-by: Phoebe Buckheister <phoebe.buckheister-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
---
drivers/net/ieee802154/fakehard.c | 14 +++++++-------
include/net/af_ieee802154.h | 4 ++--
include/net/ieee802154_netdev.h | 12 ++++++------
include/net/nl802154.h | 6 +++---
net/ieee802154/6lowpan_rtnl.c | 4 ++--
net/ieee802154/af802154.h | 2 +-
net/ieee802154/af_ieee802154.c | 2 +-
net/ieee802154/dgram.c | 8 ++++----
net/ieee802154/nl-mac.c | 12 ++++++------
net/ieee802154/reassembly.c | 6 +++---
net/ieee802154/reassembly.h | 15 ++++++++-------
net/mac802154/mac_cmd.c | 2 +-
net/mac802154/wpan.c | 10 +++++-----
13 files changed, 49 insertions(+), 48 deletions(-)
diff --git a/drivers/net/ieee802154/fakehard.c b/drivers/net/ieee802154/fakehard.c
index bf0d55e..06a400f 100644
--- a/drivers/net/ieee802154/fakehard.c
+++ b/drivers/net/ieee802154/fakehard.c
@@ -119,7 +119,7 @@ static u8 fake_get_dsn(const struct net_device *dev)
* 802.15.4-2006 document.
*/
static int fake_assoc_req(struct net_device *dev,
- struct ieee802154_addr *addr, u8 channel, u8 page, u8 cap)
+ struct ieee802154_addr_sa *addr, u8 channel, u8 page, u8 cap)
{
struct wpan_phy *phy = fake_to_phy(dev);
@@ -149,7 +149,7 @@ static int fake_assoc_req(struct net_device *dev,
* 802.15.4-2006 document.
*/
static int fake_assoc_resp(struct net_device *dev,
- struct ieee802154_addr *addr, u16 short_addr, u8 status)
+ struct ieee802154_addr_sa *addr, u16 short_addr, u8 status)
{
return 0;
}
@@ -167,7 +167,7 @@ static int fake_assoc_resp(struct net_device *dev,
* document, with the reason described in 7.3.3.2.
*/
static int fake_disassoc_req(struct net_device *dev,
- struct ieee802154_addr *addr, u8 reason)
+ struct ieee802154_addr_sa *addr, u8 reason)
{
return ieee802154_nl_disassoc_confirm(dev, IEEE802154_SUCCESS);
}
@@ -191,10 +191,10 @@ static int fake_disassoc_req(struct net_device *dev,
* Note: This is in section 7.5.2.3 of the IEEE 802.15.4-2006
* document, with 7.3.8 describing coordinator realignment.
*/
-static int fake_start_req(struct net_device *dev, struct ieee802154_addr *addr,
- u8 channel, u8 page,
- u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
- u8 coord_realign)
+static int fake_start_req(struct net_device *dev,
+ struct ieee802154_addr_sa *addr, u8 channel, u8 page,
+ u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
+ u8 coord_realign)
{
struct wpan_phy *phy = fake_to_phy(dev);
diff --git a/include/net/af_ieee802154.h b/include/net/af_ieee802154.h
index 75e64c7..f79ae2a 100644
--- a/include/net/af_ieee802154.h
+++ b/include/net/af_ieee802154.h
@@ -36,7 +36,7 @@ enum {
/* address length, octets */
#define IEEE802154_ADDR_LEN 8
-struct ieee802154_addr {
+struct ieee802154_addr_sa {
int addr_type;
u16 pan_id;
union {
@@ -51,7 +51,7 @@ struct ieee802154_addr {
struct sockaddr_ieee802154 {
sa_family_t family; /* AF_IEEE802154 */
- struct ieee802154_addr addr;
+ struct ieee802154_addr_sa addr;
};
/* get/setsockopt */
diff --git a/include/net/ieee802154_netdev.h b/include/net/ieee802154_netdev.h
index 97b2e34..53937cd 100644
--- a/include/net/ieee802154_netdev.h
+++ b/include/net/ieee802154_netdev.h
@@ -41,8 +41,8 @@ struct ieee802154_frag_info {
*/
struct ieee802154_mac_cb {
u8 lqi;
- struct ieee802154_addr sa;
- struct ieee802154_addr da;
+ struct ieee802154_addr_sa sa;
+ struct ieee802154_addr_sa da;
u8 flags;
u8 seq;
struct ieee802154_frag_info frag_info;
@@ -95,16 +95,16 @@ struct ieee802154_mlme_ops {
/* The following fields are optional (can be NULL). */
int (*assoc_req)(struct net_device *dev,
- struct ieee802154_addr *addr,
+ struct ieee802154_addr_sa *addr,
u8 channel, u8 page, u8 cap);
int (*assoc_resp)(struct net_device *dev,
- struct ieee802154_addr *addr,
+ struct ieee802154_addr_sa *addr,
u16 short_addr, u8 status);
int (*disassoc_req)(struct net_device *dev,
- struct ieee802154_addr *addr,
+ struct ieee802154_addr_sa *addr,
u8 reason);
int (*start_req)(struct net_device *dev,
- struct ieee802154_addr *addr,
+ struct ieee802154_addr_sa *addr,
u8 channel, u8 page, u8 bcn_ord, u8 sf_ord,
u8 pan_coord, u8 blx, u8 coord_realign);
int (*scan_req)(struct net_device *dev,
diff --git a/include/net/nl802154.h b/include/net/nl802154.h
index 99d2ba1..06ead97 100644
--- a/include/net/nl802154.h
+++ b/include/net/nl802154.h
@@ -22,7 +22,7 @@
#define IEEE802154_NL_H
struct net_device;
-struct ieee802154_addr;
+struct ieee802154_addr_sa;
/**
* ieee802154_nl_assoc_indic - Notify userland of an association request.
@@ -37,7 +37,7 @@ struct ieee802154_addr;
* Note: This is in section 7.3.1 of the IEEE 802.15.4-2006 document.
*/
int ieee802154_nl_assoc_indic(struct net_device *dev,
- struct ieee802154_addr *addr, u8 cap);
+ struct ieee802154_addr_sa *addr, u8 cap);
/**
* ieee802154_nl_assoc_confirm - Notify userland of association.
@@ -65,7 +65,7 @@ int ieee802154_nl_assoc_confirm(struct net_device *dev,
* Note: This is in section 7.3.3 of the IEEE 802.15.4 document.
*/
int ieee802154_nl_disassoc_indic(struct net_device *dev,
- struct ieee802154_addr *addr, u8 reason);
+ struct ieee802154_addr_sa *addr, u8 reason);
/**
* ieee802154_nl_disassoc_confirm - Notify userland of disassociation
diff --git a/net/ieee802154/6lowpan_rtnl.c b/net/ieee802154/6lowpan_rtnl.c
index 48a8f52..331180e 100644
--- a/net/ieee802154/6lowpan_rtnl.c
+++ b/net/ieee802154/6lowpan_rtnl.c
@@ -91,7 +91,7 @@ static int lowpan_header_create(struct sk_buff *skb,
{
const u8 *saddr = _saddr;
const u8 *daddr = _daddr;
- struct ieee802154_addr sa, da;
+ struct ieee802154_addr_sa sa, da;
/* TODO:
* if this package isn't ipv6 one, where should it be routed?
@@ -171,7 +171,7 @@ static int lowpan_give_skb_to_devices(struct sk_buff *skb,
static int process_data(struct sk_buff *skb)
{
u8 iphc0, iphc1;
- const struct ieee802154_addr *_saddr, *_daddr;
+ const struct ieee802154_addr_sa *_saddr, *_daddr;
raw_dump_table(__func__, "raw skb data dump", skb->data, skb->len);
/* at least two bytes will be used for the encoding */
diff --git a/net/ieee802154/af802154.h b/net/ieee802154/af802154.h
index b1ec525..331d15c 100644
--- a/net/ieee802154/af802154.h
+++ b/net/ieee802154/af802154.h
@@ -31,6 +31,6 @@ extern struct proto ieee802154_dgram_prot;
void ieee802154_raw_deliver(struct net_device *dev, struct sk_buff *skb);
int ieee802154_dgram_deliver(struct net_device *dev, struct sk_buff *skb);
struct net_device *ieee802154_get_dev(struct net *net,
- struct ieee802154_addr *addr);
+ struct ieee802154_addr_sa *addr);
#endif
diff --git a/net/ieee802154/af_ieee802154.c b/net/ieee802154/af_ieee802154.c
index a56ab9c..a8db341 100644
--- a/net/ieee802154/af_ieee802154.c
+++ b/net/ieee802154/af_ieee802154.c
@@ -44,7 +44,7 @@
* Utility function for families
*/
struct net_device *ieee802154_get_dev(struct net *net,
- struct ieee802154_addr *addr)
+ struct ieee802154_addr_sa *addr)
{
struct net_device *dev = NULL;
struct net_device *tmp;
diff --git a/net/ieee802154/dgram.c b/net/ieee802154/dgram.c
index 1846c1f..405fdf9 100644
--- a/net/ieee802154/dgram.c
+++ b/net/ieee802154/dgram.c
@@ -41,8 +41,8 @@ static DEFINE_RWLOCK(dgram_lock);
struct dgram_sock {
struct sock sk;
- struct ieee802154_addr src_addr;
- struct ieee802154_addr dst_addr;
+ struct ieee802154_addr_sa src_addr;
+ struct ieee802154_addr_sa dst_addr;
unsigned int bound:1;
unsigned int want_ack:1;
@@ -113,7 +113,7 @@ static int dgram_bind(struct sock *sk, struct sockaddr *uaddr, int len)
goto out_put;
}
- memcpy(&ro->src_addr, &addr->addr, sizeof(struct ieee802154_addr));
+ memcpy(&ro->src_addr, &addr->addr, sizeof(struct ieee802154_addr_sa));
ro->bound = 1;
err = 0;
@@ -181,7 +181,7 @@ static int dgram_connect(struct sock *sk, struct sockaddr *uaddr,
goto out;
}
- memcpy(&ro->dst_addr, &addr->addr, sizeof(struct ieee802154_addr));
+ memcpy(&ro->dst_addr, &addr->addr, sizeof(struct ieee802154_addr_sa));
out:
release_sock(sk);
diff --git a/net/ieee802154/nl-mac.c b/net/ieee802154/nl-mac.c
index ba5c1e0..7ae93e1 100644
--- a/net/ieee802154/nl-mac.c
+++ b/net/ieee802154/nl-mac.c
@@ -40,7 +40,7 @@
#include "ieee802154.h"
int ieee802154_nl_assoc_indic(struct net_device *dev,
- struct ieee802154_addr *addr, u8 cap)
+ struct ieee802154_addr_sa *addr, u8 cap)
{
struct sk_buff *msg;
@@ -99,7 +99,7 @@ nla_put_failure:
EXPORT_SYMBOL(ieee802154_nl_assoc_confirm);
int ieee802154_nl_disassoc_indic(struct net_device *dev,
- struct ieee802154_addr *addr, u8 reason)
+ struct ieee802154_addr_sa *addr, u8 reason)
{
struct sk_buff *msg;
@@ -304,7 +304,7 @@ static struct net_device *ieee802154_nl_get_dev(struct genl_info *info)
int ieee802154_associate_req(struct sk_buff *skb, struct genl_info *info)
{
struct net_device *dev;
- struct ieee802154_addr addr;
+ struct ieee802154_addr_sa addr;
u8 page;
int ret = -EOPNOTSUPP;
@@ -351,7 +351,7 @@ out:
int ieee802154_associate_resp(struct sk_buff *skb, struct genl_info *info)
{
struct net_device *dev;
- struct ieee802154_addr addr;
+ struct ieee802154_addr_sa addr;
int ret = -EOPNOTSUPP;
if (!info->attrs[IEEE802154_ATTR_STATUS] ||
@@ -383,7 +383,7 @@ out:
int ieee802154_disassociate_req(struct sk_buff *skb, struct genl_info *info)
{
struct net_device *dev;
- struct ieee802154_addr addr;
+ struct ieee802154_addr_sa addr;
int ret = -EOPNOTSUPP;
if ((!info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] &&
@@ -425,7 +425,7 @@ out:
int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
{
struct net_device *dev;
- struct ieee802154_addr addr;
+ struct ieee802154_addr_sa addr;
u8 channel, bcn_ord, sf_ord;
u8 page;
diff --git a/net/ieee802154/reassembly.c b/net/ieee802154/reassembly.c
index 1dae199..f08b37a 100644
--- a/net/ieee802154/reassembly.c
+++ b/net/ieee802154/reassembly.c
@@ -36,8 +36,8 @@ static int lowpan_frag_reasm(struct lowpan_frag_queue *fq,
struct sk_buff *prev, struct net_device *dev);
static unsigned int lowpan_hash_frag(__be16 tag, u16 d_size,
- const struct ieee802154_addr *saddr,
- const struct ieee802154_addr *daddr)
+ const struct ieee802154_addr_sa *saddr,
+ const struct ieee802154_addr_sa *daddr)
{
u32 c;
@@ -103,7 +103,7 @@ out:
static inline struct lowpan_frag_queue *
fq_find(struct net *net, const struct ieee802154_frag_info *frag_info,
- const struct ieee802154_addr *src, const struct ieee802154_addr *dst)
+ const struct ieee802154_addr_sa *src, const struct ieee802154_addr_sa *dst)
{
struct inet_frag_queue *q;
struct lowpan_create_arg arg;
diff --git a/net/ieee802154/reassembly.h b/net/ieee802154/reassembly.h
index 055518b..895721a 100644
--- a/net/ieee802154/reassembly.h
+++ b/net/ieee802154/reassembly.h
@@ -6,8 +6,8 @@
struct lowpan_create_arg {
__be16 tag;
u16 d_size;
- const struct ieee802154_addr *src;
- const struct ieee802154_addr *dst;
+ const struct ieee802154_addr_sa *src;
+ const struct ieee802154_addr_sa *dst;
};
/* Equivalent of ipv4 struct ip
@@ -17,11 +17,11 @@ struct lowpan_frag_queue {
__be16 tag;
u16 d_size;
- struct ieee802154_addr saddr;
- struct ieee802154_addr daddr;
+ struct ieee802154_addr_sa saddr;
+ struct ieee802154_addr_sa daddr;
};
-static inline u32 ieee802154_addr_hash(const struct ieee802154_addr *a)
+static inline u32 ieee802154_addr_hash(const struct ieee802154_addr_sa *a)
{
switch (a->addr_type) {
case IEEE802154_ADDR_LONG:
@@ -34,8 +34,9 @@ static inline u32 ieee802154_addr_hash(const struct ieee802154_addr *a)
}
}
-static inline bool ieee802154_addr_addr_equal(const struct ieee802154_addr *a1,
- const struct ieee802154_addr *a2)
+static inline bool
+ieee802154_addr_addr_equal(const struct ieee802154_addr_sa *a1,
+ const struct ieee802154_addr_sa *a2)
{
if (a1->pan_id != a2->pan_id)
return false;
diff --git a/net/mac802154/mac_cmd.c b/net/mac802154/mac_cmd.c
index a99910d..e079c57 100644
--- a/net/mac802154/mac_cmd.c
+++ b/net/mac802154/mac_cmd.c
@@ -34,7 +34,7 @@
#include "mac802154.h"
static int mac802154_mlme_start_req(struct net_device *dev,
- struct ieee802154_addr *addr,
+ struct ieee802154_addr_sa *addr,
u8 channel, u8 page,
u8 bcn_ord, u8 sf_ord,
u8 pan_coord, u8 blx,
diff --git a/net/mac802154/wpan.c b/net/mac802154/wpan.c
index 372d8a2..b2bc3f0 100644
--- a/net/mac802154/wpan.c
+++ b/net/mac802154/wpan.c
@@ -132,9 +132,9 @@ static int mac802154_header_create(struct sk_buff *skb,
const void *_saddr,
unsigned len)
{
- const struct ieee802154_addr *saddr = _saddr;
- const struct ieee802154_addr *daddr = _daddr;
- struct ieee802154_addr dev_addr;
+ const struct ieee802154_addr_sa *saddr = _saddr;
+ const struct ieee802154_addr_sa *daddr = _daddr;
+ struct ieee802154_addr_sa dev_addr;
struct mac802154_sub_if_data *priv = netdev_priv(dev);
int pos = 2;
u8 head[MAC802154_FRAME_HARD_HEADER_LEN];
@@ -219,7 +219,7 @@ mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr)
{
const u8 *hdr = skb_mac_header(skb);
const u8 *tail = skb_tail_pointer(skb);
- struct ieee802154_addr *addr = (struct ieee802154_addr *)haddr;
+ struct ieee802154_addr_sa *addr = (struct ieee802154_addr_sa *)haddr;
u16 fc;
int da_type;
@@ -304,7 +304,7 @@ mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr)
goto malformed;
}
- return sizeof(struct ieee802154_addr);
+ return sizeof(struct ieee802154_addr_sa);
malformed:
pr_debug("malformed packet\n");
--
1.9.0
------------------------------------------------------------------------------
Learn Graph Databases - Download FREE O'Reilly Book
"Graph Databases" is the definitive new guide to graph databases and their
applications. Written by three acclaimed leaders in the field,
this first edition is now available. Download your free book today!
http://p.sf.net/sfu/13534_NeoTech
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH net-next v2 2/8] ieee802154: add address struct with proper endiannes and some operations
[not found] ` <1394828644-19898-1-git-send-email-phoebe.buckheister-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
2014-03-14 20:23 ` [PATCH net-next v2 1/8] ieee802154: rename struct ieee802154_addr to *_sa Phoebe Buckheister
@ 2014-03-14 20:23 ` Phoebe Buckheister
2014-03-14 20:23 ` [PATCH net-next v2 3/8] ieee802154: enforce consistent endianness in the 802.15.4 stack Phoebe Buckheister
` (4 subsequent siblings)
6 siblings, 0 replies; 10+ messages in thread
From: Phoebe Buckheister @ 2014-03-14 20:23 UTC (permalink / raw)
To: netdev-u79uwXL29TY76Z2rM5mHXA
Cc: davem-fT/PcQaiUtIeIZ0/mPfg9Q,
linux-zigbee-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f
Add a replacement ieee802154_addr struct with proper endianness on
fields. Short address fields are stored as __le16 as on the network,
extended (EUI64) addresses are __le64 as opposed to the u8[8] format
used previously. This disconnect with the netdev address, which is
stored as big-endian u8[8], is intentional.
Signed-off-by: Phoebe Buckheister <phoebe.buckheister-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
---
include/net/ieee802154_netdev.h | 72 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 72 insertions(+)
diff --git a/include/net/ieee802154_netdev.h b/include/net/ieee802154_netdev.h
index 53937cd..86d5d50 100644
--- a/include/net/ieee802154_netdev.h
+++ b/include/net/ieee802154_netdev.h
@@ -29,6 +29,78 @@
#include <net/af_ieee802154.h>
+struct ieee802154_addr {
+ u8 mode;
+ __le16 pan_id;
+ union {
+ __le16 short_addr;
+ __le64 extended_addr;
+ };
+};
+
+static inline bool ieee802154_addr_equal(const struct ieee802154_addr *a1,
+ const struct ieee802154_addr *a2)
+{
+ if (a1->pan_id != a2->pan_id || a1->mode != a2->mode)
+ return false;
+
+ if ((a1->mode == IEEE802154_ADDR_LONG &&
+ a1->extended_addr != a2->extended_addr) ||
+ (a1->mode == IEEE802154_ADDR_SHORT &&
+ a1->short_addr != a2->short_addr))
+ return false;
+
+ return true;
+}
+
+static inline __le64 ieee802154_devaddr_from_raw(const void *raw)
+{
+ u64 temp;
+
+ memcpy(&temp, raw, IEEE802154_ADDR_LEN);
+ return (__force __le64)swab64(temp);
+}
+
+static inline void ieee802154_devaddr_to_raw(void *raw, __le64 addr)
+{
+ u64 temp = swab64((__force u64)addr);
+
+ memcpy(raw, &temp, IEEE802154_ADDR_LEN);
+}
+
+static inline void ieee802154_addr_from_sa(struct ieee802154_addr *a,
+ const struct ieee802154_addr_sa *sa)
+{
+ a->mode = sa->addr_type;
+ a->pan_id = cpu_to_le16(sa->pan_id);
+
+ switch (a->mode) {
+ case IEEE802154_ADDR_SHORT:
+ a->short_addr = cpu_to_le16(sa->short_addr);
+ break;
+ case IEEE802154_ADDR_LONG:
+ a->extended_addr = ieee802154_devaddr_from_raw(sa->hwaddr);
+ break;
+ }
+}
+
+static inline void ieee802154_addr_to_sa(struct ieee802154_addr_sa *sa,
+ const struct ieee802154_addr *a)
+{
+ sa->addr_type = a->mode;
+ sa->pan_id = le16_to_cpu(a->pan_id);
+
+ switch (a->mode) {
+ case IEEE802154_ADDR_SHORT:
+ sa->short_addr = le16_to_cpu(a->short_addr);
+ break;
+ case IEEE802154_ADDR_LONG:
+ ieee802154_devaddr_to_raw(sa->hwaddr, a->extended_addr);
+ break;
+ }
+}
+
+
struct ieee802154_frag_info {
__be16 d_tag;
u16 d_size;
--
1.9.0
------------------------------------------------------------------------------
Learn Graph Databases - Download FREE O'Reilly Book
"Graph Databases" is the definitive new guide to graph databases and their
applications. Written by three acclaimed leaders in the field,
this first edition is now available. Download your free book today!
http://p.sf.net/sfu/13534_NeoTech
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH net-next v2 3/8] ieee802154: enforce consistent endianness in the 802.15.4 stack
[not found] ` <1394828644-19898-1-git-send-email-phoebe.buckheister-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
2014-03-14 20:23 ` [PATCH net-next v2 1/8] ieee802154: rename struct ieee802154_addr to *_sa Phoebe Buckheister
2014-03-14 20:23 ` [PATCH net-next v2 2/8] ieee802154: add address struct with proper endiannes and some operations Phoebe Buckheister
@ 2014-03-14 20:23 ` Phoebe Buckheister
2014-03-14 20:24 ` [PATCH net-next v2 4/8] ieee802154: add header structs with endiannes and operations Phoebe Buckheister
` (3 subsequent siblings)
6 siblings, 0 replies; 10+ messages in thread
From: Phoebe Buckheister @ 2014-03-14 20:23 UTC (permalink / raw)
To: netdev-u79uwXL29TY76Z2rM5mHXA
Cc: davem-fT/PcQaiUtIeIZ0/mPfg9Q,
linux-zigbee-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f
Enable sparse warnings about endianness, replace the remaining fields
regarding network operations without explicit endianness annotations
with such that are annotated, and propagate this through the entire
stack.
Uses of ieee802154_addr_sa are not changed yet, this patch is only
concerned with all other fields (such as address filters, operation
parameters and the likes).
Signed-off-by: Phoebe Buckheister <phoebe.buckheister-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
---
drivers/net/ieee802154/at86rf230.c | 25 +++++++++++-----------
drivers/net/ieee802154/fakehard.c | 14 ++++++-------
drivers/net/ieee802154/mrf24j40.c | 17 ++++++++-------
include/net/ieee802154_netdev.h | 6 +++---
include/net/mac802154.h | 5 ++---
include/net/nl802154.h | 6 +++---
net/ieee802154/6lowpan_rtnl.c | 8 +++----
net/ieee802154/Makefile | 2 ++
net/ieee802154/af_ieee802154.c | 10 ++++-----
net/ieee802154/dgram.c | 4 ++--
net/ieee802154/nl-mac.c | 32 +++++++++++++++-------------
net/mac802154/Makefile | 2 ++
net/mac802154/ieee802154_dev.c | 5 ++++-
net/mac802154/mac802154.h | 9 ++++----
net/mac802154/mac_cmd.c | 4 ++--
net/mac802154/mib.c | 24 +++++++++++----------
net/mac802154/wpan.c | 43 ++++++++++++++++++++++++--------------
17 files changed, 121 insertions(+), 95 deletions(-)
diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index b8e7321..934a12c 100644
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -745,30 +745,31 @@ at86rf230_set_hw_addr_filt(struct ieee802154_dev *dev,
struct at86rf230_local *lp = dev->priv;
if (changed & IEEE802515_AFILT_SADDR_CHANGED) {
+ u16 addr = le16_to_cpu(filt->short_addr);
+
dev_vdbg(&lp->spi->dev,
"at86rf230_set_hw_addr_filt called for saddr\n");
- __at86rf230_write(lp, RG_SHORT_ADDR_0, filt->short_addr);
- __at86rf230_write(lp, RG_SHORT_ADDR_1, filt->short_addr >> 8);
+ __at86rf230_write(lp, RG_SHORT_ADDR_0, addr);
+ __at86rf230_write(lp, RG_SHORT_ADDR_1, addr >> 8);
}
if (changed & IEEE802515_AFILT_PANID_CHANGED) {
+ u16 pan = le16_to_cpu(filt->pan_id);
+
dev_vdbg(&lp->spi->dev,
"at86rf230_set_hw_addr_filt called for pan id\n");
- __at86rf230_write(lp, RG_PAN_ID_0, filt->pan_id);
- __at86rf230_write(lp, RG_PAN_ID_1, filt->pan_id >> 8);
+ __at86rf230_write(lp, RG_PAN_ID_0, pan);
+ __at86rf230_write(lp, RG_PAN_ID_1, pan >> 8);
}
if (changed & IEEE802515_AFILT_IEEEADDR_CHANGED) {
+ u8 i, addr[8];
+
+ memcpy(addr, &filt->ieee_addr, 8);
dev_vdbg(&lp->spi->dev,
"at86rf230_set_hw_addr_filt called for IEEE addr\n");
- at86rf230_write_subreg(lp, SR_IEEE_ADDR_0, filt->ieee_addr[7]);
- at86rf230_write_subreg(lp, SR_IEEE_ADDR_1, filt->ieee_addr[6]);
- at86rf230_write_subreg(lp, SR_IEEE_ADDR_2, filt->ieee_addr[5]);
- at86rf230_write_subreg(lp, SR_IEEE_ADDR_3, filt->ieee_addr[4]);
- at86rf230_write_subreg(lp, SR_IEEE_ADDR_4, filt->ieee_addr[3]);
- at86rf230_write_subreg(lp, SR_IEEE_ADDR_5, filt->ieee_addr[2]);
- at86rf230_write_subreg(lp, SR_IEEE_ADDR_6, filt->ieee_addr[1]);
- at86rf230_write_subreg(lp, SR_IEEE_ADDR_7, filt->ieee_addr[0]);
+ for (i = 0; i < 8; i++)
+ __at86rf230_write(lp, RG_IEEE_ADDR_0 + i, addr[i]);
}
if (changed & IEEE802515_AFILT_PANC_CHANGED) {
diff --git a/drivers/net/ieee802154/fakehard.c b/drivers/net/ieee802154/fakehard.c
index 06a400f..3c98030 100644
--- a/drivers/net/ieee802154/fakehard.c
+++ b/drivers/net/ieee802154/fakehard.c
@@ -63,11 +63,11 @@ static struct wpan_phy *fake_get_phy(const struct net_device *dev)
*
* Return the ID of the PAN from the PIB.
*/
-static u16 fake_get_pan_id(const struct net_device *dev)
+static __le16 fake_get_pan_id(const struct net_device *dev)
{
BUG_ON(dev->type != ARPHRD_IEEE802154);
- return 0xeba1;
+ return cpu_to_le16(0xeba1);
}
/**
@@ -78,11 +78,11 @@ static u16 fake_get_pan_id(const struct net_device *dev)
* device. If the device has not yet had a short address assigned
* then this should return 0xFFFF to indicate a lack of association.
*/
-static u16 fake_get_short_addr(const struct net_device *dev)
+static __le16 fake_get_short_addr(const struct net_device *dev)
{
BUG_ON(dev->type != ARPHRD_IEEE802154);
- return 0x1;
+ return cpu_to_le16(0x1);
}
/**
@@ -149,7 +149,7 @@ static int fake_assoc_req(struct net_device *dev,
* 802.15.4-2006 document.
*/
static int fake_assoc_resp(struct net_device *dev,
- struct ieee802154_addr_sa *addr, u16 short_addr, u8 status)
+ struct ieee802154_addr_sa *addr, __le16 short_addr, u8 status)
{
return 0;
}
@@ -281,8 +281,8 @@ static int ieee802154_fake_ioctl(struct net_device *dev, struct ifreq *ifr,
switch (cmd) {
case SIOCGIFADDR:
/* FIXME: fixed here, get from device IRL */
- pan_id = fake_get_pan_id(dev);
- short_addr = fake_get_short_addr(dev);
+ pan_id = le16_to_cpu(fake_get_pan_id(dev));
+ short_addr = le16_to_cpu(fake_get_short_addr(dev));
if (pan_id == IEEE802154_PANID_BROADCAST ||
short_addr == IEEE802154_ADDR_BROADCAST)
return -EADDRNOTAVAIL;
diff --git a/drivers/net/ieee802154/mrf24j40.c b/drivers/net/ieee802154/mrf24j40.c
index 246befa..78a6552 100644
--- a/drivers/net/ieee802154/mrf24j40.c
+++ b/drivers/net/ieee802154/mrf24j40.c
@@ -465,8 +465,8 @@ static int mrf24j40_filter(struct ieee802154_dev *dev,
if (changed & IEEE802515_AFILT_SADDR_CHANGED) {
/* Short Addr */
u8 addrh, addrl;
- addrh = filt->short_addr >> 8 & 0xff;
- addrl = filt->short_addr & 0xff;
+ addrh = le16_to_cpu(filt->short_addr) >> 8 & 0xff;
+ addrl = le16_to_cpu(filt->short_addr) & 0xff;
write_short_reg(devrec, REG_SADRH, addrh);
write_short_reg(devrec, REG_SADRL, addrl);
@@ -476,15 +476,16 @@ static int mrf24j40_filter(struct ieee802154_dev *dev,
if (changed & IEEE802515_AFILT_IEEEADDR_CHANGED) {
/* Device Address */
- int i;
+ u8 i, addr[8];
+
+ memcpy(addr, &filt->ieee_addr, 8);
for (i = 0; i < 8; i++)
- write_short_reg(devrec, REG_EADR0+i,
- filt->ieee_addr[7-i]);
+ write_short_reg(devrec, REG_EADR0 + i, addr[i]);
#ifdef DEBUG
printk(KERN_DEBUG "Set long addr to: ");
for (i = 0; i < 8; i++)
- printk("%02hhx ", filt->ieee_addr[i]);
+ printk("%02hhx ", addr[7 - i]);
printk(KERN_DEBUG "\n");
#endif
}
@@ -492,8 +493,8 @@ static int mrf24j40_filter(struct ieee802154_dev *dev,
if (changed & IEEE802515_AFILT_PANID_CHANGED) {
/* PAN ID */
u8 panidl, panidh;
- panidh = filt->pan_id >> 8 & 0xff;
- panidl = filt->pan_id & 0xff;
+ panidh = le16_to_cpu(filt->pan_id) >> 8 & 0xff;
+ panidl = le16_to_cpu(filt->pan_id) & 0xff;
write_short_reg(devrec, REG_PANIDH, panidh);
write_short_reg(devrec, REG_PANIDL, panidl);
diff --git a/include/net/ieee802154_netdev.h b/include/net/ieee802154_netdev.h
index 86d5d50..e4810d5 100644
--- a/include/net/ieee802154_netdev.h
+++ b/include/net/ieee802154_netdev.h
@@ -171,7 +171,7 @@ struct ieee802154_mlme_ops {
u8 channel, u8 page, u8 cap);
int (*assoc_resp)(struct net_device *dev,
struct ieee802154_addr_sa *addr,
- u16 short_addr, u8 status);
+ __le16 short_addr, u8 status);
int (*disassoc_req)(struct net_device *dev,
struct ieee802154_addr_sa *addr,
u8 reason);
@@ -190,8 +190,8 @@ struct ieee802154_mlme_ops {
* FIXME: these should become the part of PIB/MIB interface.
* However we still don't have IB interface of any kind
*/
- u16 (*get_pan_id)(const struct net_device *dev);
- u16 (*get_short_addr)(const struct net_device *dev);
+ __le16 (*get_pan_id)(const struct net_device *dev);
+ __le16 (*get_short_addr)(const struct net_device *dev);
u8 (*get_dsn)(const struct net_device *dev);
};
diff --git a/include/net/mac802154.h b/include/net/mac802154.h
index 8ca3d04..f74b2a8 100644
--- a/include/net/mac802154.h
+++ b/include/net/mac802154.h
@@ -50,7 +50,7 @@ struct ieee802154_hw_addr_filt {
* devices across independent networks.
*/
__le16 short_addr;
- u8 ieee_addr[IEEE802154_ADDR_LEN];
+ __le64 ieee_addr;
u8 pan_coord;
};
@@ -153,8 +153,7 @@ struct ieee802154_ops {
int (*set_hw_addr_filt)(struct ieee802154_dev *dev,
struct ieee802154_hw_addr_filt *filt,
unsigned long changed);
- int (*ieee_addr)(struct ieee802154_dev *dev,
- u8 addr[IEEE802154_ADDR_LEN]);
+ int (*ieee_addr)(struct ieee802154_dev *dev, __le64 addr);
int (*set_txpower)(struct ieee802154_dev *dev, int db);
int (*set_lbt)(struct ieee802154_dev *dev, bool on);
int (*set_cca_mode)(struct ieee802154_dev *dev, u8 mode);
diff --git a/include/net/nl802154.h b/include/net/nl802154.h
index 06ead97..3121ed0 100644
--- a/include/net/nl802154.h
+++ b/include/net/nl802154.h
@@ -52,7 +52,7 @@ int ieee802154_nl_assoc_indic(struct net_device *dev,
* Note: This is in section 7.3.2 of the IEEE 802.15.4 document.
*/
int ieee802154_nl_assoc_confirm(struct net_device *dev,
- u16 short_addr, u8 status);
+ __le16 short_addr, u8 status);
/**
* ieee802154_nl_disassoc_indic - Notify userland of disassociation.
@@ -111,8 +111,8 @@ int ieee802154_nl_scan_confirm(struct net_device *dev,
* Note: This API cannot indicate a beacon frame for a coordinator
* operating in long addressing mode.
*/
-int ieee802154_nl_beacon_indic(struct net_device *dev, u16 panid,
- u16 coord_addr);
+int ieee802154_nl_beacon_indic(struct net_device *dev, __le16 panid,
+ __le16 coord_addr);
/**
* ieee802154_nl_start_confirm - Notify userland of completion of start.
diff --git a/net/ieee802154/6lowpan_rtnl.c b/net/ieee802154/6lowpan_rtnl.c
index 331180e..c23349d 100644
--- a/net/ieee802154/6lowpan_rtnl.c
+++ b/net/ieee802154/6lowpan_rtnl.c
@@ -120,11 +120,11 @@ static int lowpan_header_create(struct sk_buff *skb,
/* prepare wpan address data */
sa.addr_type = IEEE802154_ADDR_LONG;
- sa.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
+ sa.pan_id = le16_to_cpu(ieee802154_mlme_ops(dev)->get_pan_id(dev));
memcpy(&(sa.hwaddr), saddr, 8);
/* intra-PAN communications */
- da.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
+ da.pan_id = sa.pan_id;
/* if the destination address is the broadcast address, use the
* corresponding short address
@@ -352,13 +352,13 @@ static struct wpan_phy *lowpan_get_phy(const struct net_device *dev)
return ieee802154_mlme_ops(real_dev)->get_phy(real_dev);
}
-static u16 lowpan_get_pan_id(const struct net_device *dev)
+static __le16 lowpan_get_pan_id(const struct net_device *dev)
{
struct net_device *real_dev = lowpan_dev_info(dev)->real_dev;
return ieee802154_mlme_ops(real_dev)->get_pan_id(real_dev);
}
-static u16 lowpan_get_short_addr(const struct net_device *dev)
+static __le16 lowpan_get_short_addr(const struct net_device *dev)
{
struct net_device *real_dev = lowpan_dev_info(dev)->real_dev;
return ieee802154_mlme_ops(real_dev)->get_short_addr(real_dev);
diff --git a/net/ieee802154/Makefile b/net/ieee802154/Makefile
index b113fc4..78b1fa2 100644
--- a/net/ieee802154/Makefile
+++ b/net/ieee802154/Makefile
@@ -5,3 +5,5 @@ obj-$(CONFIG_6LOWPAN_IPHC) += 6lowpan_iphc.o
6lowpan-y := 6lowpan_rtnl.o reassembly.o
ieee802154-y := netlink.o nl-mac.o nl-phy.o nl_policy.o wpan-class.o
af_802154-y := af_ieee802154.o raw.o dgram.o
+
+ccflags-y += -D__CHECK_ENDIAN__
diff --git a/net/ieee802154/af_ieee802154.c b/net/ieee802154/af_ieee802154.c
index a8db341..973cb11 100644
--- a/net/ieee802154/af_ieee802154.c
+++ b/net/ieee802154/af_ieee802154.c
@@ -48,7 +48,7 @@ struct net_device *ieee802154_get_dev(struct net *net,
{
struct net_device *dev = NULL;
struct net_device *tmp;
- u16 pan_id, short_addr;
+ __le16 pan_id, short_addr;
switch (addr->addr_type) {
case IEEE802154_ADDR_LONG:
@@ -59,9 +59,9 @@ struct net_device *ieee802154_get_dev(struct net *net,
rcu_read_unlock();
break;
case IEEE802154_ADDR_SHORT:
- if (addr->pan_id == 0xffff ||
+ if (addr->pan_id == IEEE802154_PANID_BROADCAST ||
addr->short_addr == IEEE802154_ADDR_UNDEF ||
- addr->short_addr == 0xffff)
+ addr->short_addr == IEEE802154_ADDR_UNDEF)
break;
rtnl_lock();
@@ -74,8 +74,8 @@ struct net_device *ieee802154_get_dev(struct net *net,
short_addr =
ieee802154_mlme_ops(tmp)->get_short_addr(tmp);
- if (pan_id == addr->pan_id &&
- short_addr == addr->short_addr) {
+ if (le16_to_cpu(pan_id) == addr->pan_id &&
+ le16_to_cpu(short_addr) == addr->short_addr) {
dev = tmp;
dev_hold(dev);
break;
diff --git a/net/ieee802154/dgram.c b/net/ieee802154/dgram.c
index 405fdf9..9df3a1d94 100644
--- a/net/ieee802154/dgram.c
+++ b/net/ieee802154/dgram.c
@@ -363,8 +363,8 @@ int ieee802154_dgram_deliver(struct net_device *dev, struct sk_buff *skb)
/* Data frame processing */
BUG_ON(dev->type != ARPHRD_IEEE802154);
- pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
- short_addr = ieee802154_mlme_ops(dev)->get_short_addr(dev);
+ pan_id = le16_to_cpu(ieee802154_mlme_ops(dev)->get_pan_id(dev));
+ short_addr = le16_to_cpu(ieee802154_mlme_ops(dev)->get_short_addr(dev));
read_lock(&dgram_lock);
sk_for_each(sk, &dgram_head) {
diff --git a/net/ieee802154/nl-mac.c b/net/ieee802154/nl-mac.c
index 7ae93e1..58fa523 100644
--- a/net/ieee802154/nl-mac.c
+++ b/net/ieee802154/nl-mac.c
@@ -72,7 +72,7 @@ nla_put_failure:
}
EXPORT_SYMBOL(ieee802154_nl_assoc_indic);
-int ieee802154_nl_assoc_confirm(struct net_device *dev, u16 short_addr,
+int ieee802154_nl_assoc_confirm(struct net_device *dev, __le16 short_addr,
u8 status)
{
struct sk_buff *msg;
@@ -87,7 +87,8 @@ int ieee802154_nl_assoc_confirm(struct net_device *dev, u16 short_addr,
nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
dev->dev_addr) ||
- nla_put_u16(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) ||
+ nla_put_u16(msg, IEEE802154_ATTR_SHORT_ADDR,
+ le16_to_cpu(short_addr)) ||
nla_put_u8(msg, IEEE802154_ATTR_STATUS, status))
goto nla_put_failure;
return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
@@ -157,8 +158,8 @@ nla_put_failure:
}
EXPORT_SYMBOL(ieee802154_nl_disassoc_confirm);
-int ieee802154_nl_beacon_indic(struct net_device *dev,
- u16 panid, u16 coord_addr)
+int ieee802154_nl_beacon_indic(struct net_device *dev, __le16 panid,
+ __le16 coord_addr)
{
struct sk_buff *msg;
@@ -172,8 +173,10 @@ int ieee802154_nl_beacon_indic(struct net_device *dev,
nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
dev->dev_addr) ||
- nla_put_u16(msg, IEEE802154_ATTR_COORD_SHORT_ADDR, coord_addr) ||
- nla_put_u16(msg, IEEE802154_ATTR_COORD_PAN_ID, panid))
+ nla_put_u16(msg, IEEE802154_ATTR_COORD_SHORT_ADDR,
+ le16_to_cpu(coord_addr)) ||
+ nla_put_u16(msg, IEEE802154_ATTR_COORD_PAN_ID,
+ le16_to_cpu(panid)))
goto nla_put_failure;
return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
@@ -243,6 +246,7 @@ static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
{
void *hdr;
struct wpan_phy *phy;
+ u16 short_addr, pan_id;
pr_debug("%s\n", __func__);
@@ -254,15 +258,16 @@ static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
phy = ieee802154_mlme_ops(dev)->get_phy(dev);
BUG_ON(!phy);
+ short_addr = le16_to_cpu(ieee802154_mlme_ops(dev)->get_short_addr(dev));
+ pan_id = le16_to_cpu(ieee802154_mlme_ops(dev)->get_pan_id(dev));
+
if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
dev->dev_addr) ||
- nla_put_u16(msg, IEEE802154_ATTR_SHORT_ADDR,
- ieee802154_mlme_ops(dev)->get_short_addr(dev)) ||
- nla_put_u16(msg, IEEE802154_ATTR_PAN_ID,
- ieee802154_mlme_ops(dev)->get_pan_id(dev)))
+ nla_put_u16(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) ||
+ nla_put_u16(msg, IEEE802154_ATTR_PAN_ID, pan_id))
goto nla_put_failure;
wpan_phy_put(phy);
return genlmsg_end(msg, hdr);
@@ -368,11 +373,10 @@ int ieee802154_associate_resp(struct sk_buff *skb, struct genl_info *info)
addr.addr_type = IEEE802154_ADDR_LONG;
nla_memcpy(addr.hwaddr, info->attrs[IEEE802154_ATTR_DEST_HW_ADDR],
IEEE802154_ADDR_LEN);
- addr.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
-
+ addr.pan_id = le16_to_cpu(ieee802154_mlme_ops(dev)->get_pan_id(dev));
ret = ieee802154_mlme_ops(dev)->assoc_resp(dev, &addr,
- nla_get_u16(info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]),
+ cpu_to_le16(nla_get_u16(info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR])),
nla_get_u8(info->attrs[IEEE802154_ATTR_STATUS]));
out:
@@ -407,7 +411,7 @@ int ieee802154_disassociate_req(struct sk_buff *skb, struct genl_info *info)
addr.short_addr = nla_get_u16(
info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]);
}
- addr.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
+ addr.pan_id = le16_to_cpu(ieee802154_mlme_ops(dev)->get_pan_id(dev));
ret = ieee802154_mlme_ops(dev)->disassoc_req(dev, &addr,
nla_get_u8(info->attrs[IEEE802154_ATTR_REASON]));
diff --git a/net/mac802154/Makefile b/net/mac802154/Makefile
index 57cf5d1..15d62df5 100644
--- a/net/mac802154/Makefile
+++ b/net/mac802154/Makefile
@@ -1,2 +1,4 @@
obj-$(CONFIG_MAC802154) += mac802154.o
mac802154-objs := ieee802154_dev.o rx.o tx.o mac_cmd.o mib.o monitor.o wpan.o
+
+ccflags-y += -D__CHECK_ENDIAN__
diff --git a/net/mac802154/ieee802154_dev.c b/net/mac802154/ieee802154_dev.c
index b75bb01..10cdb09 100644
--- a/net/mac802154/ieee802154_dev.c
+++ b/net/mac802154/ieee802154_dev.c
@@ -27,6 +27,7 @@
#include <net/netlink.h>
#include <linux/nl802154.h>
#include <net/mac802154.h>
+#include <net/ieee802154_netdev.h>
#include <net/route.h>
#include <net/wpan-phy.h>
@@ -46,7 +47,9 @@ int mac802154_slave_open(struct net_device *dev)
}
if (ipriv->ops->ieee_addr) {
- res = ipriv->ops->ieee_addr(&ipriv->hw, dev->dev_addr);
+ __le64 addr = ieee802154_devaddr_from_raw(dev->dev_addr);
+
+ res = ipriv->ops->ieee_addr(&ipriv->hw, addr);
WARN_ON(res);
if (res)
goto err;
diff --git a/net/mac802154/mac802154.h b/net/mac802154/mac802154.h
index d48422e..4619486 100644
--- a/net/mac802154/mac802154.h
+++ b/net/mac802154/mac802154.h
@@ -76,6 +76,7 @@ struct mac802154_sub_if_data {
__le16 pan_id;
__le16 short_addr;
+ __le64 extended_addr;
u8 chan;
u8 page;
@@ -106,11 +107,11 @@ netdev_tx_t mac802154_tx(struct mac802154_priv *priv, struct sk_buff *skb,
u8 page, u8 chan);
/* MIB callbacks */
-void mac802154_dev_set_short_addr(struct net_device *dev, u16 val);
-u16 mac802154_dev_get_short_addr(const struct net_device *dev);
+void mac802154_dev_set_short_addr(struct net_device *dev, __le16 val);
+__le16 mac802154_dev_get_short_addr(const struct net_device *dev);
void mac802154_dev_set_ieee_addr(struct net_device *dev);
-u16 mac802154_dev_get_pan_id(const struct net_device *dev);
-void mac802154_dev_set_pan_id(struct net_device *dev, u16 val);
+__le16 mac802154_dev_get_pan_id(const struct net_device *dev);
+void mac802154_dev_set_pan_id(struct net_device *dev, __le16 val);
void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan);
u8 mac802154_dev_get_dsn(const struct net_device *dev);
diff --git a/net/mac802154/mac_cmd.c b/net/mac802154/mac_cmd.c
index e079c57..f551ef2 100644
--- a/net/mac802154/mac_cmd.c
+++ b/net/mac802154/mac_cmd.c
@@ -42,8 +42,8 @@ static int mac802154_mlme_start_req(struct net_device *dev,
{
BUG_ON(addr->addr_type != IEEE802154_ADDR_SHORT);
- mac802154_dev_set_pan_id(dev, addr->pan_id);
- mac802154_dev_set_short_addr(dev, addr->short_addr);
+ mac802154_dev_set_pan_id(dev, cpu_to_le16(addr->pan_id));
+ mac802154_dev_set_short_addr(dev, cpu_to_le16(addr->short_addr));
mac802154_dev_set_ieee_addr(dev);
mac802154_dev_set_page_channel(dev, page, channel);
diff --git a/net/mac802154/mib.c b/net/mac802154/mib.c
index f48f40c..ba5abdc 100644
--- a/net/mac802154/mib.c
+++ b/net/mac802154/mib.c
@@ -24,6 +24,7 @@
#include <linux/if_arp.h>
#include <net/mac802154.h>
+#include <net/ieee802154_netdev.h>
#include <net/wpan-phy.h>
#include "mac802154.h"
@@ -79,7 +80,7 @@ static void set_hw_addr_filt(struct net_device *dev, unsigned long changed)
queue_work(priv->hw->dev_workqueue, &work->work);
}
-void mac802154_dev_set_short_addr(struct net_device *dev, u16 val)
+void mac802154_dev_set_short_addr(struct net_device *dev, __le16 val)
{
struct mac802154_sub_if_data *priv = netdev_priv(dev);
@@ -96,10 +97,10 @@ void mac802154_dev_set_short_addr(struct net_device *dev, u16 val)
}
}
-u16 mac802154_dev_get_short_addr(const struct net_device *dev)
+__le16 mac802154_dev_get_short_addr(const struct net_device *dev)
{
struct mac802154_sub_if_data *priv = netdev_priv(dev);
- u16 ret;
+ __le16 ret;
BUG_ON(dev->type != ARPHRD_IEEE802154);
@@ -114,20 +115,21 @@ void mac802154_dev_set_ieee_addr(struct net_device *dev)
{
struct mac802154_sub_if_data *priv = netdev_priv(dev);
struct mac802154_priv *mac = priv->hw;
+ __le64 addr;
- if (mac->ops->set_hw_addr_filt &&
- memcmp(mac->hw.hw_filt.ieee_addr,
- dev->dev_addr, IEEE802154_ADDR_LEN)) {
- memcpy(mac->hw.hw_filt.ieee_addr,
- dev->dev_addr, IEEE802154_ADDR_LEN);
+ addr = ieee802154_devaddr_from_raw(dev->dev_addr);
+ priv->extended_addr = addr;
+
+ if (mac->ops->set_hw_addr_filt && mac->hw.hw_filt.ieee_addr != addr) {
+ mac->hw.hw_filt.ieee_addr = addr;
set_hw_addr_filt(dev, IEEE802515_AFILT_IEEEADDR_CHANGED);
}
}
-u16 mac802154_dev_get_pan_id(const struct net_device *dev)
+__le16 mac802154_dev_get_pan_id(const struct net_device *dev)
{
struct mac802154_sub_if_data *priv = netdev_priv(dev);
- u16 ret;
+ __le16 ret;
BUG_ON(dev->type != ARPHRD_IEEE802154);
@@ -138,7 +140,7 @@ u16 mac802154_dev_get_pan_id(const struct net_device *dev)
return ret;
}
-void mac802154_dev_set_pan_id(struct net_device *dev, u16 val)
+void mac802154_dev_set_pan_id(struct net_device *dev, __le16 val)
{
struct mac802154_sub_if_data *priv = netdev_priv(dev);
diff --git a/net/mac802154/wpan.c b/net/mac802154/wpan.c
index b2bc3f0..43e886b 100644
--- a/net/mac802154/wpan.c
+++ b/net/mac802154/wpan.c
@@ -76,19 +76,25 @@ mac802154_wpan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
switch (cmd) {
case SIOCGIFADDR:
- if (priv->pan_id == IEEE802154_PANID_BROADCAST ||
- priv->short_addr == IEEE802154_ADDR_BROADCAST) {
+ {
+ u16 pan_id, short_addr;
+
+ pan_id = le16_to_cpu(priv->pan_id);
+ short_addr = le16_to_cpu(priv->short_addr);
+ if (pan_id == IEEE802154_PANID_BROADCAST ||
+ short_addr == IEEE802154_ADDR_BROADCAST) {
err = -EADDRNOTAVAIL;
break;
}
sa->family = AF_IEEE802154;
sa->addr.addr_type = IEEE802154_ADDR_SHORT;
- sa->addr.pan_id = priv->pan_id;
- sa->addr.short_addr = priv->short_addr;
+ sa->addr.pan_id = pan_id;
+ sa->addr.short_addr = short_addr;
err = 0;
break;
+ }
case SIOCSIFADDR:
dev_warn(&dev->dev,
"Using DEBUGing ioctl SIOCSIFADDR isn't recommened!\n");
@@ -101,8 +107,8 @@ mac802154_wpan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
break;
}
- priv->pan_id = sa->addr.pan_id;
- priv->short_addr = sa->addr.short_addr;
+ priv->pan_id = cpu_to_le16(sa->addr.pan_id);
+ priv->short_addr = cpu_to_le16(sa->addr.short_addr);
err = 0;
break;
@@ -151,18 +157,18 @@ static int mac802154_header_create(struct sk_buff *skb,
if (!saddr) {
spin_lock_bh(&priv->mib_lock);
- if (priv->short_addr == IEEE802154_ADDR_BROADCAST ||
- priv->short_addr == IEEE802154_ADDR_UNDEF ||
- priv->pan_id == IEEE802154_PANID_BROADCAST) {
+ if (priv->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) ||
+ priv->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) ||
+ priv->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) {
dev_addr.addr_type = IEEE802154_ADDR_LONG;
memcpy(dev_addr.hwaddr, dev->dev_addr,
IEEE802154_ADDR_LEN);
} else {
dev_addr.addr_type = IEEE802154_ADDR_SHORT;
- dev_addr.short_addr = priv->short_addr;
+ dev_addr.short_addr = le16_to_cpu(priv->short_addr);
}
- dev_addr.pan_id = priv->pan_id;
+ dev_addr.pan_id = le16_to_cpu(priv->pan_id);
saddr = &dev_addr;
spin_unlock_bh(&priv->mib_lock);
@@ -382,8 +388,8 @@ void mac802154_wpan_setup(struct net_device *dev)
get_random_bytes(&priv->bsn, 1);
get_random_bytes(&priv->dsn, 1);
- priv->pan_id = IEEE802154_PANID_BROADCAST;
- priv->short_addr = IEEE802154_ADDR_BROADCAST;
+ priv->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST);
+ priv->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST);
}
static int mac802154_process_data(struct net_device *dev, struct sk_buff *skb)
@@ -394,10 +400,15 @@ static int mac802154_process_data(struct net_device *dev, struct sk_buff *skb)
static int
mac802154_subif_frame(struct mac802154_sub_if_data *sdata, struct sk_buff *skb)
{
+ u16 span, sshort;
+
pr_debug("getting packet via slave interface %s\n", sdata->dev->name);
spin_lock_bh(&sdata->mib_lock);
+ span = le16_to_cpu(sdata->pan_id);
+ sshort = le16_to_cpu(sdata->short_addr);
+
switch (mac_cb(skb)->da.addr_type) {
case IEEE802154_ADDR_NONE:
if (mac_cb(skb)->sa.addr_type != IEEE802154_ADDR_NONE)
@@ -408,7 +419,7 @@ mac802154_subif_frame(struct mac802154_sub_if_data *sdata, struct sk_buff *skb)
skb->pkt_type = PACKET_HOST;
break;
case IEEE802154_ADDR_LONG:
- if (mac_cb(skb)->da.pan_id != sdata->pan_id &&
+ if (mac_cb(skb)->da.pan_id != span &&
mac_cb(skb)->da.pan_id != IEEE802154_PANID_BROADCAST)
skb->pkt_type = PACKET_OTHERHOST;
else if (!memcmp(mac_cb(skb)->da.hwaddr, sdata->dev->dev_addr,
@@ -418,10 +429,10 @@ mac802154_subif_frame(struct mac802154_sub_if_data *sdata, struct sk_buff *skb)
skb->pkt_type = PACKET_OTHERHOST;
break;
case IEEE802154_ADDR_SHORT:
- if (mac_cb(skb)->da.pan_id != sdata->pan_id &&
+ if (mac_cb(skb)->da.pan_id != span &&
mac_cb(skb)->da.pan_id != IEEE802154_PANID_BROADCAST)
skb->pkt_type = PACKET_OTHERHOST;
- else if (mac_cb(skb)->da.short_addr == sdata->short_addr)
+ else if (mac_cb(skb)->da.short_addr == sshort)
skb->pkt_type = PACKET_HOST;
else if (mac_cb(skb)->da.short_addr ==
IEEE802154_ADDR_BROADCAST)
--
1.9.0
------------------------------------------------------------------------------
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http://p.sf.net/sfu/13534_NeoTech
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH net-next v2 4/8] ieee802154: add header structs with endiannes and operations
[not found] ` <1394828644-19898-1-git-send-email-phoebe.buckheister-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
` (2 preceding siblings ...)
2014-03-14 20:23 ` [PATCH net-next v2 3/8] ieee802154: enforce consistent endianness in the 802.15.4 stack Phoebe Buckheister
@ 2014-03-14 20:24 ` Phoebe Buckheister
2014-03-14 20:24 ` [PATCH net-next v2 6/8] ieee802154: use ieee802154_addr instead of *_sa variants Phoebe Buckheister
` (2 subsequent siblings)
6 siblings, 0 replies; 10+ messages in thread
From: Phoebe Buckheister @ 2014-03-14 20:24 UTC (permalink / raw)
To: netdev-u79uwXL29TY76Z2rM5mHXA
Cc: davem-fT/PcQaiUtIeIZ0/mPfg9Q,
linux-zigbee-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f
This patch provides a set of structures to represent 802.15.4 MAC
headers, and a set of operations to push/pull/peek these structs from
skbs. We cannot simply pointer-cast the skb MAC header pointer to these
structs, because 802.15.4 headers are wildly variable - depending on the
first three bytes, virtually all other fields of the header may be
present or not, and be present with different lengths.
The new header creation/parsing routines also support 802.15.4 security
headers, which are currently not supported by the mac802154
implementation of the protocol.
Signed-off-by: Phoebe Buckheister <phoebe.buckheister-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
---
include/net/ieee802154.h | 28 +++-
include/net/ieee802154_netdev.h | 87 ++++++++++++
include/net/mac802154.h | 1 +
net/ieee802154/Makefile | 3 +-
| 287 ++++++++++++++++++++++++++++++++++++++++
5 files changed, 401 insertions(+), 5 deletions(-)
create mode 100644 net/ieee802154/header_ops.c
diff --git a/include/net/ieee802154.h b/include/net/ieee802154.h
index ee59f8b..c7ae0ac 100644
--- a/include/net/ieee802154.h
+++ b/include/net/ieee802154.h
@@ -42,22 +42,42 @@
(((x) << IEEE802154_FC_TYPE_SHIFT) & IEEE802154_FC_TYPE_MASK)); \
} while (0)
-#define IEEE802154_FC_SECEN (1 << 3)
-#define IEEE802154_FC_FRPEND (1 << 4)
-#define IEEE802154_FC_ACK_REQ (1 << 5)
-#define IEEE802154_FC_INTRA_PAN (1 << 6)
+#define IEEE802154_FC_SECEN_SHIFT 3
+#define IEEE802154_FC_SECEN (1 << IEEE802154_FC_SECEN_SHIFT)
+#define IEEE802154_FC_FRPEND_SHIFT 4
+#define IEEE802154_FC_FRPEND (1 << IEEE802154_FC_FRPEND_SHIFT)
+#define IEEE802154_FC_ACK_REQ_SHIFT 5
+#define IEEE802154_FC_ACK_REQ (1 << IEEE802154_FC_ACK_REQ_SHIFT)
+#define IEEE802154_FC_INTRA_PAN_SHIFT 6
+#define IEEE802154_FC_INTRA_PAN (1 << IEEE802154_FC_INTRA_PAN_SHIFT)
#define IEEE802154_FC_SAMODE_SHIFT 14
#define IEEE802154_FC_SAMODE_MASK (3 << IEEE802154_FC_SAMODE_SHIFT)
#define IEEE802154_FC_DAMODE_SHIFT 10
#define IEEE802154_FC_DAMODE_MASK (3 << IEEE802154_FC_DAMODE_SHIFT)
+#define IEEE802154_FC_VERSION_SHIFT 12
+#define IEEE802154_FC_VERSION_MASK (3 << IEEE802154_FC_VERSION_SHIFT)
+#define IEEE802154_FC_VERSION(x) ((x & IEEE802154_FC_VERSION_MASK) >> IEEE802154_FC_VERSION_SHIFT)
+
#define IEEE802154_FC_SAMODE(x) \
(((x) & IEEE802154_FC_SAMODE_MASK) >> IEEE802154_FC_SAMODE_SHIFT)
#define IEEE802154_FC_DAMODE(x) \
(((x) & IEEE802154_FC_DAMODE_MASK) >> IEEE802154_FC_DAMODE_SHIFT)
+#define IEEE802154_SCF_SECLEVEL_MASK 7
+#define IEEE802154_SCF_SECLEVEL_SHIFT 0
+#define IEEE802154_SCF_SECLEVEL(x) (x & IEEE802154_SCF_SECLEVEL_MASK)
+#define IEEE802154_SCF_KEY_ID_MODE_SHIFT 3
+#define IEEE802154_SCF_KEY_ID_MODE_MASK (3 << IEEE802154_SCF_KEY_ID_MODE_SHIFT)
+#define IEEE802154_SCF_KEY_ID_MODE(x) \
+ ((x & IEEE802154_SCF_KEY_ID_MODE_MASK) >> IEEE802154_SCF_KEY_ID_MODE_SHIFT)
+
+#define IEEE802154_SCF_KEY_IMPLICIT 0
+#define IEEE802154_SCF_KEY_INDEX 1
+#define IEEE802154_SCF_KEY_SHORT_INDEX 2
+#define IEEE802154_SCF_KEY_HW_INDEX 3
/* MAC footer size */
#define IEEE802154_MFR_SIZE 2 /* 2 octets */
diff --git a/include/net/ieee802154_netdev.h b/include/net/ieee802154_netdev.h
index e4810d5..c3fc33a 100644
--- a/include/net/ieee802154_netdev.h
+++ b/include/net/ieee802154_netdev.h
@@ -28,6 +28,28 @@
#define IEEE802154_NETDEVICE_H
#include <net/af_ieee802154.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+
+struct ieee802154_sechdr {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+ u8 level:3,
+ key_id_mode:2,
+ reserved:3;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+ u8 reserved:3,
+ key_id_mode:2,
+ level:3;
+#else
+#error "Please fix <asm/byteorder.h>"
+#endif
+ u8 key_id;
+ __le32 frame_counter;
+ union {
+ __le32 short_src;
+ __le64 extended_src;
+ };
+};
struct ieee802154_addr {
u8 mode;
@@ -38,6 +60,71 @@ struct ieee802154_addr {
};
};
+struct ieee802154_hdr_fc {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+ u16 type:3,
+ security_enabled:1,
+ frame_pending:1,
+ ack_request:1,
+ intra_pan:1,
+ reserved:3,
+ dest_addr_mode:2,
+ version:2,
+ source_addr_mode:2;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+ u16 reserved:1,
+ intra_pan:1,
+ ack_request:1,
+ frame_pending:1,
+ security_enabled:1,
+ type:3,
+ source_addr_mode:2,
+ version:2,
+ dest_addr_mode:2,
+ reserved2:2;
+#else
+#error "Please fix <asm/byteorder.h>"
+#endif
+};
+
+struct ieee802154_hdr {
+ struct ieee802154_hdr_fc fc;
+ u8 seq;
+ struct ieee802154_addr source;
+ struct ieee802154_addr dest;
+ struct ieee802154_sechdr sec;
+};
+
+/* pushes hdr onto the skb. fields of hdr->fc that can be calculated from
+ * the contents of hdr will be, and the actual value of those bits in
+ * hdr->fc will be ignored. this includes the INTRA_PAN bit and the frame
+ * version, if SECEN is set.
+ */
+int ieee802154_hdr_push(struct sk_buff *skb, const struct ieee802154_hdr *hdr);
+
+/* pulls the entire 802.15.4 header off of the skb, including the security
+ * header, and performs pan id decompression
+ */
+int ieee802154_hdr_pull(struct sk_buff *skb, struct ieee802154_hdr *hdr);
+
+/* parses the frame control, sequence number of address fields in a given skb
+ * and stores them into hdr, performing pan id decompression and length checks
+ * to be suitable for use in header_ops.parse
+ */
+int ieee802154_hdr_peek_addrs(const struct sk_buff *skb,
+ struct ieee802154_hdr *hdr);
+
+static inline int ieee802154_hdr_length(struct sk_buff *skb)
+{
+ struct ieee802154_hdr hdr;
+ int len = ieee802154_hdr_pull(skb, &hdr);
+
+ if (len > 0)
+ skb_push(skb, len);
+
+ return len;
+}
+
static inline bool ieee802154_addr_equal(const struct ieee802154_addr *a1,
const struct ieee802154_addr *a2)
{
diff --git a/include/net/mac802154.h b/include/net/mac802154.h
index f74b2a8..a591053 100644
--- a/include/net/mac802154.h
+++ b/include/net/mac802154.h
@@ -20,6 +20,7 @@
#define NET_MAC802154_H
#include <net/af_ieee802154.h>
+#include <linux/skbuff.h>
/* General MAC frame format:
* 2 bytes: Frame Control
diff --git a/net/ieee802154/Makefile b/net/ieee802154/Makefile
index 78b1fa2..bf1b514 100644
--- a/net/ieee802154/Makefile
+++ b/net/ieee802154/Makefile
@@ -3,7 +3,8 @@ obj-$(CONFIG_IEEE802154_6LOWPAN) += 6lowpan.o
obj-$(CONFIG_6LOWPAN_IPHC) += 6lowpan_iphc.o
6lowpan-y := 6lowpan_rtnl.o reassembly.o
-ieee802154-y := netlink.o nl-mac.o nl-phy.o nl_policy.o wpan-class.o
+ieee802154-y := netlink.o nl-mac.o nl-phy.o nl_policy.o wpan-class.o \
+ header_ops.o
af_802154-y := af_ieee802154.o raw.o dgram.o
ccflags-y += -D__CHECK_ENDIAN__
--git a/net/ieee802154/header_ops.c b/net/ieee802154/header_ops.c
new file mode 100644
index 0000000..bed42a4
--- /dev/null
+++ b/net/ieee802154/header_ops.c
@@ -0,0 +1,287 @@
+/*
+ * Copyright (C) 2014 Fraunhofer ITWM
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Written by:
+ * Phoebe Buckheister <phoebe.buckheister-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
+ */
+
+#include <net/mac802154.h>
+#include <net/ieee802154.h>
+#include <net/ieee802154_netdev.h>
+
+static int
+ieee802154_hdr_push_addr(u8 *buf, const struct ieee802154_addr *addr,
+ bool omit_pan)
+{
+ int pos = 0;
+
+ if (addr->mode == IEEE802154_ADDR_NONE)
+ return 0;
+
+ if (!omit_pan) {
+ memcpy(buf + pos, &addr->pan_id, 2);
+ pos += 2;
+ }
+
+ switch (addr->mode) {
+ case IEEE802154_ADDR_SHORT:
+ memcpy(buf + pos, &addr->short_addr, 2);
+ pos += 2;
+ break;
+
+ case IEEE802154_ADDR_LONG:
+ memcpy(buf + pos, &addr->extended_addr, IEEE802154_ADDR_LEN);
+ pos += IEEE802154_ADDR_LEN;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return pos;
+}
+
+static int
+ieee802154_hdr_push_sechdr(u8 *buf, const struct ieee802154_sechdr *hdr)
+{
+ int pos = 5;
+
+ memcpy(buf, hdr, 1);
+ memcpy(buf + 1, &hdr->frame_counter, 4);
+
+ switch (hdr->key_id_mode) {
+ case IEEE802154_SCF_KEY_IMPLICIT:
+ return pos;
+
+ case IEEE802154_SCF_KEY_INDEX:
+ break;
+
+ case IEEE802154_SCF_KEY_SHORT_INDEX:
+ memcpy(buf + pos, &hdr->short_src, 4);
+ pos += 4;
+ break;
+
+ case IEEE802154_SCF_KEY_HW_INDEX:
+ memcpy(buf + pos, &hdr->extended_src, IEEE802154_ADDR_LEN);
+ pos += IEEE802154_ADDR_LEN;
+ break;
+ }
+
+ buf[pos++] = hdr->key_id;
+
+ return pos;
+}
+
+int
+ieee802154_hdr_push(struct sk_buff *skb, const struct ieee802154_hdr *hdr)
+{
+ u8 buf[MAC802154_FRAME_HARD_HEADER_LEN];
+ int pos = 2;
+ int rc;
+ struct ieee802154_hdr_fc fc = hdr->fc;
+
+ buf[pos++] = hdr->seq;
+
+ fc.dest_addr_mode = hdr->dest.mode;
+
+ rc = ieee802154_hdr_push_addr(buf + pos, &hdr->dest, false);
+ if (rc < 0)
+ return -EINVAL;
+ pos += rc;
+
+ fc.source_addr_mode = hdr->source.mode;
+
+ if (hdr->source.pan_id == hdr->dest.pan_id &&
+ hdr->dest.mode != IEEE802154_ADDR_NONE)
+ fc.intra_pan = true;
+
+ rc = ieee802154_hdr_push_addr(buf + pos, &hdr->source, fc.intra_pan);
+ if (rc < 0)
+ return -EINVAL;
+ pos += rc;
+
+ if (fc.security_enabled) {
+ fc.version = 1;
+
+ rc = ieee802154_hdr_push_sechdr(buf + pos, &hdr->sec);
+ if (rc < 0)
+ return -EINVAL;
+
+ pos += rc;
+ }
+
+ memcpy(buf, &fc, 2);
+
+ memcpy(skb_push(skb, pos), buf, pos);
+
+ return pos;
+}
+EXPORT_SYMBOL_GPL(ieee802154_hdr_push);
+
+static int
+ieee802154_hdr_get_addr(const u8 *buf, int mode, bool omit_pan,
+ struct ieee802154_addr *addr)
+{
+ int pos = 0;
+
+ addr->mode = mode;
+
+ if (mode == IEEE802154_ADDR_NONE)
+ return 0;
+
+ if (!omit_pan) {
+ memcpy(&addr->pan_id, buf + pos, 2);
+ pos += 2;
+ }
+
+ if (mode == IEEE802154_ADDR_SHORT) {
+ memcpy(&addr->short_addr, buf + pos, 2);
+ return pos + 2;
+ } else {
+ memcpy(&addr->extended_addr, buf + pos, IEEE802154_ADDR_LEN);
+ return pos + IEEE802154_ADDR_LEN;
+ }
+}
+
+static int ieee802154_hdr_addr_len(int mode, bool omit_pan)
+{
+ int pan_len = omit_pan ? 0 : 2;
+
+ switch (mode) {
+ case IEEE802154_ADDR_NONE: return 0;
+ case IEEE802154_ADDR_SHORT: return 2 + pan_len;
+ case IEEE802154_ADDR_LONG: return IEEE802154_ADDR_LEN + pan_len;
+ default: return -EINVAL;
+ }
+}
+
+static int
+ieee802154_hdr_get_sechdr(const u8 *buf, struct ieee802154_sechdr *hdr)
+{
+ int pos = 5;
+
+ memcpy(hdr, buf, 1);
+ memcpy(&hdr->frame_counter, buf + 1, 4);
+
+ switch (hdr->key_id_mode) {
+ case IEEE802154_SCF_KEY_IMPLICIT:
+ return pos;
+
+ case IEEE802154_SCF_KEY_INDEX:
+ break;
+
+ case IEEE802154_SCF_KEY_SHORT_INDEX:
+ memcpy(&hdr->short_src, buf + pos, 4);
+ pos += 4;
+ break;
+
+ case IEEE802154_SCF_KEY_HW_INDEX:
+ memcpy(&hdr->extended_src, buf + pos, IEEE802154_ADDR_LEN);
+ pos += IEEE802154_ADDR_LEN;
+ break;
+ }
+
+ hdr->key_id = buf[pos++];
+
+ return pos;
+}
+
+static int ieee802154_hdr_sechdr_len(u8 sc)
+{
+ switch (IEEE802154_SCF_KEY_ID_MODE(sc)) {
+ case IEEE802154_SCF_KEY_IMPLICIT: return 5;
+ case IEEE802154_SCF_KEY_INDEX: return 6;
+ case IEEE802154_SCF_KEY_SHORT_INDEX: return 10;
+ case IEEE802154_SCF_KEY_HW_INDEX: return 14;
+ default: return -EINVAL;
+ }
+}
+
+static int ieee802154_hdr_minlen(const struct ieee802154_hdr *hdr)
+{
+ int dlen, slen;
+
+ dlen = ieee802154_hdr_addr_len(hdr->fc.dest_addr_mode, false);
+ slen = ieee802154_hdr_addr_len(hdr->fc.source_addr_mode,
+ hdr->fc.intra_pan);
+
+ if (slen < 0 || dlen < 0)
+ return -EINVAL;
+
+ return 3 + dlen + slen + hdr->fc.security_enabled;
+}
+
+static int
+ieee802154_hdr_get_addrs(const u8 *buf, struct ieee802154_hdr *hdr)
+{
+ int pos = 0;
+
+ pos += ieee802154_hdr_get_addr(buf + pos, hdr->fc.dest_addr_mode,
+ false, &hdr->dest);
+ pos += ieee802154_hdr_get_addr(buf + pos, hdr->fc.source_addr_mode,
+ hdr->fc.intra_pan, &hdr->source);
+
+ if (hdr->fc.intra_pan)
+ hdr->source.pan_id = hdr->dest.pan_id;
+
+ return pos;
+}
+
+int
+ieee802154_hdr_pull(struct sk_buff *skb, struct ieee802154_hdr *hdr)
+{
+ int pos = 3, rc;
+
+ if (!pskb_may_pull(skb, 3))
+ return -EINVAL;
+
+ memcpy(hdr, skb->data, 3);
+
+ rc = ieee802154_hdr_minlen(hdr);
+ if (rc < 0 || !pskb_may_pull(skb, rc))
+ return -EINVAL;
+
+ pos += ieee802154_hdr_get_addrs(skb->data + pos, hdr);
+
+ if (hdr->fc.security_enabled) {
+ int want = pos + ieee802154_hdr_sechdr_len(skb->data[pos]);
+
+ if (!pskb_may_pull(skb, want))
+ return -EINVAL;
+
+ pos += ieee802154_hdr_get_sechdr(skb->data + pos, &hdr->sec);
+ }
+
+ skb_pull(skb, pos);
+ return pos;
+}
+EXPORT_SYMBOL_GPL(ieee802154_hdr_pull);
+
+int
+ieee802154_hdr_peek_addrs(const struct sk_buff *skb, struct ieee802154_hdr *hdr)
+{
+ const u8 *buf = skb_mac_header(skb);
+ int pos = 3, rc;
+
+ if (buf + 3 > skb_tail_pointer(skb))
+ return -EINVAL;
+
+ memcpy(hdr, buf, 3);
+
+ rc = ieee802154_hdr_minlen(hdr);
+ if (rc < 0 || buf + rc > skb_tail_pointer(skb))
+ return -EINVAL;
+
+ pos += ieee802154_hdr_get_addrs(buf + pos, hdr);
+ return pos;
+}
+EXPORT_SYMBOL_GPL(ieee802154_hdr_peek_addrs);
--
1.9.0
------------------------------------------------------------------------------
Learn Graph Databases - Download FREE O'Reilly Book
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applications. Written by three acclaimed leaders in the field,
this first edition is now available. Download your free book today!
http://p.sf.net/sfu/13534_NeoTech
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH net-next v2 6/8] ieee802154: use ieee802154_addr instead of *_sa variants
[not found] ` <1394828644-19898-1-git-send-email-phoebe.buckheister-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
` (3 preceding siblings ...)
2014-03-14 20:24 ` [PATCH net-next v2 4/8] ieee802154: add header structs with endiannes and operations Phoebe Buckheister
@ 2014-03-14 20:24 ` Phoebe Buckheister
2014-03-14 20:24 ` [PATCH net-next v2 7/8] 6lowpan: move lowpan frag_info out of 802.15.4 headers Phoebe Buckheister
2014-03-14 20:24 ` [PATCH net-next v2 8/8] ieee802154: add proper length checks to header creations Phoebe Buckheister
6 siblings, 0 replies; 10+ messages in thread
From: Phoebe Buckheister @ 2014-03-14 20:24 UTC (permalink / raw)
To: netdev-u79uwXL29TY76Z2rM5mHXA
Cc: davem-fT/PcQaiUtIeIZ0/mPfg9Q,
linux-zigbee-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f
Change all internal uses of ieee802154_addr_sa to ieee802154_addr,
except for those instances that communicate directly with userspace.
Signed-off-by: Phoebe Buckheister <phoebe.buckheister-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
---
drivers/net/ieee802154/fakehard.c | 8 +--
include/net/ieee802154_netdev.h | 12 ++--
include/net/nl802154.h | 6 +-
net/ieee802154/6lowpan_rtnl.c | 38 +++++++++----
net/ieee802154/dgram.c | 2 +-
net/ieee802154/nl-mac.c | 114 ++++++++++++++++++++++----------------
net/ieee802154/reassembly.c | 17 ++++--
net/ieee802154/reassembly.h | 42 +++-----------
net/mac802154/mac_cmd.c | 8 +--
net/mac802154/wpan.c | 35 ++++++------
10 files changed, 146 insertions(+), 136 deletions(-)
diff --git a/drivers/net/ieee802154/fakehard.c b/drivers/net/ieee802154/fakehard.c
index 3c98030..78f18be 100644
--- a/drivers/net/ieee802154/fakehard.c
+++ b/drivers/net/ieee802154/fakehard.c
@@ -119,7 +119,7 @@ static u8 fake_get_dsn(const struct net_device *dev)
* 802.15.4-2006 document.
*/
static int fake_assoc_req(struct net_device *dev,
- struct ieee802154_addr_sa *addr, u8 channel, u8 page, u8 cap)
+ struct ieee802154_addr *addr, u8 channel, u8 page, u8 cap)
{
struct wpan_phy *phy = fake_to_phy(dev);
@@ -149,7 +149,7 @@ static int fake_assoc_req(struct net_device *dev,
* 802.15.4-2006 document.
*/
static int fake_assoc_resp(struct net_device *dev,
- struct ieee802154_addr_sa *addr, __le16 short_addr, u8 status)
+ struct ieee802154_addr *addr, __le16 short_addr, u8 status)
{
return 0;
}
@@ -167,7 +167,7 @@ static int fake_assoc_resp(struct net_device *dev,
* document, with the reason described in 7.3.3.2.
*/
static int fake_disassoc_req(struct net_device *dev,
- struct ieee802154_addr_sa *addr, u8 reason)
+ struct ieee802154_addr *addr, u8 reason)
{
return ieee802154_nl_disassoc_confirm(dev, IEEE802154_SUCCESS);
}
@@ -192,7 +192,7 @@ static int fake_disassoc_req(struct net_device *dev,
* document, with 7.3.8 describing coordinator realignment.
*/
static int fake_start_req(struct net_device *dev,
- struct ieee802154_addr_sa *addr, u8 channel, u8 page,
+ struct ieee802154_addr *addr, u8 channel, u8 page,
u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
u8 coord_realign)
{
diff --git a/include/net/ieee802154_netdev.h b/include/net/ieee802154_netdev.h
index 8e7f690..827e3e3 100644
--- a/include/net/ieee802154_netdev.h
+++ b/include/net/ieee802154_netdev.h
@@ -200,11 +200,11 @@ struct ieee802154_frag_info {
*/
struct ieee802154_mac_cb {
u8 lqi;
- struct ieee802154_addr_sa sa;
- struct ieee802154_addr_sa da;
u8 flags;
u8 seq;
struct ieee802154_frag_info frag_info;
+ struct ieee802154_addr source;
+ struct ieee802154_addr dest;
};
static inline struct ieee802154_mac_cb *mac_cb(struct sk_buff *skb)
@@ -248,16 +248,16 @@ struct ieee802154_mlme_ops {
/* The following fields are optional (can be NULL). */
int (*assoc_req)(struct net_device *dev,
- struct ieee802154_addr_sa *addr,
+ struct ieee802154_addr *addr,
u8 channel, u8 page, u8 cap);
int (*assoc_resp)(struct net_device *dev,
- struct ieee802154_addr_sa *addr,
+ struct ieee802154_addr *addr,
__le16 short_addr, u8 status);
int (*disassoc_req)(struct net_device *dev,
- struct ieee802154_addr_sa *addr,
+ struct ieee802154_addr *addr,
u8 reason);
int (*start_req)(struct net_device *dev,
- struct ieee802154_addr_sa *addr,
+ struct ieee802154_addr *addr,
u8 channel, u8 page, u8 bcn_ord, u8 sf_ord,
u8 pan_coord, u8 blx, u8 coord_realign);
int (*scan_req)(struct net_device *dev,
diff --git a/include/net/nl802154.h b/include/net/nl802154.h
index 3121ed0..b23548e 100644
--- a/include/net/nl802154.h
+++ b/include/net/nl802154.h
@@ -22,7 +22,7 @@
#define IEEE802154_NL_H
struct net_device;
-struct ieee802154_addr_sa;
+struct ieee802154_addr;
/**
* ieee802154_nl_assoc_indic - Notify userland of an association request.
@@ -37,7 +37,7 @@ struct ieee802154_addr_sa;
* Note: This is in section 7.3.1 of the IEEE 802.15.4-2006 document.
*/
int ieee802154_nl_assoc_indic(struct net_device *dev,
- struct ieee802154_addr_sa *addr, u8 cap);
+ struct ieee802154_addr *addr, u8 cap);
/**
* ieee802154_nl_assoc_confirm - Notify userland of association.
@@ -65,7 +65,7 @@ int ieee802154_nl_assoc_confirm(struct net_device *dev,
* Note: This is in section 7.3.3 of the IEEE 802.15.4 document.
*/
int ieee802154_nl_disassoc_indic(struct net_device *dev,
- struct ieee802154_addr_sa *addr, u8 reason);
+ struct ieee802154_addr *addr, u8 reason);
/**
* ieee802154_nl_disassoc_confirm - Notify userland of disassociation
diff --git a/net/ieee802154/6lowpan_rtnl.c b/net/ieee802154/6lowpan_rtnl.c
index 678564c..d4edd20 100644
--- a/net/ieee802154/6lowpan_rtnl.c
+++ b/net/ieee802154/6lowpan_rtnl.c
@@ -168,10 +168,11 @@ static int lowpan_give_skb_to_devices(struct sk_buff *skb,
return stat;
}
-static int process_data(struct sk_buff *skb)
+static int process_data(struct sk_buff *skb, const struct ieee802154_hdr *hdr)
{
u8 iphc0, iphc1;
- const struct ieee802154_addr_sa *_saddr, *_daddr;
+ struct ieee802154_addr_sa sa, da;
+ void *sap, *dap;
raw_dump_table(__func__, "raw skb data dump", skb->data, skb->len);
/* at least two bytes will be used for the encoding */
@@ -184,14 +185,23 @@ static int process_data(struct sk_buff *skb)
if (lowpan_fetch_skb_u8(skb, &iphc1))
goto drop;
- _saddr = &mac_cb(skb)->sa;
- _daddr = &mac_cb(skb)->da;
+ ieee802154_addr_to_sa(&sa, &hdr->source);
+ ieee802154_addr_to_sa(&da, &hdr->dest);
- return lowpan_process_data(skb, skb->dev, (u8 *)_saddr->hwaddr,
- _saddr->addr_type, IEEE802154_ADDR_LEN,
- (u8 *)_daddr->hwaddr, _daddr->addr_type,
- IEEE802154_ADDR_LEN, iphc0, iphc1,
- lowpan_give_skb_to_devices);
+ if (sa.addr_type == IEEE802154_ADDR_SHORT)
+ sap = &sa.short_addr;
+ else
+ sap = &sa.hwaddr;
+
+ if (da.addr_type == IEEE802154_ADDR_SHORT)
+ dap = &da.short_addr;
+ else
+ dap = &da.hwaddr;
+
+ return lowpan_process_data(skb, skb->dev, sap, sa.addr_type,
+ IEEE802154_ADDR_LEN, dap, da.addr_type,
+ IEEE802154_ADDR_LEN, iphc0, iphc1,
+ lowpan_give_skb_to_devices);
drop:
kfree_skb(skb);
@@ -438,6 +448,7 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt, struct net_device *orig_dev)
{
struct sk_buff *local_skb;
+ struct ieee802154_hdr hdr;
int ret;
if (!netif_running(dev))
@@ -446,6 +457,9 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
if (dev->type != ARPHRD_IEEE802154)
goto drop_skb;
+ if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0)
+ goto drop_skb;
+
local_skb = skb_clone(skb, GFP_ATOMIC);
if (!local_skb)
goto drop_skb;
@@ -466,14 +480,14 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
} else {
switch (skb->data[0] & 0xe0) {
case LOWPAN_DISPATCH_IPHC: /* ipv6 datagram */
- ret = process_data(local_skb);
+ ret = process_data(local_skb, &hdr);
if (ret == NET_RX_DROP)
goto drop;
break;
case LOWPAN_DISPATCH_FRAG1: /* first fragment header */
ret = lowpan_frag_rcv(local_skb, LOWPAN_DISPATCH_FRAG1);
if (ret == 1) {
- ret = process_data(local_skb);
+ ret = process_data(local_skb, &hdr);
if (ret == NET_RX_DROP)
goto drop;
}
@@ -481,7 +495,7 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
case LOWPAN_DISPATCH_FRAGN: /* next fragments headers */
ret = lowpan_frag_rcv(local_skb, LOWPAN_DISPATCH_FRAGN);
if (ret == 1) {
- ret = process_data(local_skb);
+ ret = process_data(local_skb, &hdr);
if (ret == NET_RX_DROP)
goto drop;
}
diff --git a/net/ieee802154/dgram.c b/net/ieee802154/dgram.c
index 0a926c6..55f2dc4 100644
--- a/net/ieee802154/dgram.c
+++ b/net/ieee802154/dgram.c
@@ -313,7 +313,7 @@ static int dgram_recvmsg(struct kiocb *iocb, struct sock *sk,
if (saddr) {
saddr->family = AF_IEEE802154;
- saddr->addr = mac_cb(skb)->sa;
+ ieee802154_addr_to_sa(&saddr->addr, &mac_cb(skb)->source);
*addr_len = sizeof(*saddr);
}
diff --git a/net/ieee802154/nl-mac.c b/net/ieee802154/nl-mac.c
index 58fa523..bda8dba 100644
--- a/net/ieee802154/nl-mac.c
+++ b/net/ieee802154/nl-mac.c
@@ -39,14 +39,34 @@
#include "ieee802154.h"
+static int nla_put_hwaddr(struct sk_buff *msg, int type, __le64 hwaddr)
+{
+ return nla_put_u64(msg, type, swab64((__force u64)hwaddr));
+}
+
+static __le64 nla_get_hwaddr(const struct nlattr *nla)
+{
+ return ieee802154_devaddr_from_raw(nla_data(nla));
+}
+
+static int nla_put_shortaddr(struct sk_buff *msg, int type, __le16 addr)
+{
+ return nla_put_u16(msg, type, le16_to_cpu(addr));
+}
+
+static __le16 nla_get_shortaddr(const struct nlattr *nla)
+{
+ return cpu_to_le16(nla_get_u16(nla));
+}
+
int ieee802154_nl_assoc_indic(struct net_device *dev,
- struct ieee802154_addr_sa *addr, u8 cap)
+ struct ieee802154_addr *addr, u8 cap)
{
struct sk_buff *msg;
pr_debug("%s\n", __func__);
- if (addr->addr_type != IEEE802154_ADDR_LONG) {
+ if (addr->mode != IEEE802154_ADDR_LONG) {
pr_err("%s: received non-long source address!\n", __func__);
return -EINVAL;
}
@@ -59,8 +79,8 @@ int ieee802154_nl_assoc_indic(struct net_device *dev,
nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
dev->dev_addr) ||
- nla_put(msg, IEEE802154_ATTR_SRC_HW_ADDR, IEEE802154_ADDR_LEN,
- addr->hwaddr) ||
+ nla_put_hwaddr(msg, IEEE802154_ATTR_SRC_HW_ADDR,
+ addr->extended_addr) ||
nla_put_u8(msg, IEEE802154_ATTR_CAPABILITY, cap))
goto nla_put_failure;
@@ -87,8 +107,7 @@ int ieee802154_nl_assoc_confirm(struct net_device *dev, __le16 short_addr,
nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
dev->dev_addr) ||
- nla_put_u16(msg, IEEE802154_ATTR_SHORT_ADDR,
- le16_to_cpu(short_addr)) ||
+ nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) ||
nla_put_u8(msg, IEEE802154_ATTR_STATUS, status))
goto nla_put_failure;
return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
@@ -100,7 +119,7 @@ nla_put_failure:
EXPORT_SYMBOL(ieee802154_nl_assoc_confirm);
int ieee802154_nl_disassoc_indic(struct net_device *dev,
- struct ieee802154_addr_sa *addr, u8 reason)
+ struct ieee802154_addr *addr, u8 reason)
{
struct sk_buff *msg;
@@ -115,13 +134,13 @@ int ieee802154_nl_disassoc_indic(struct net_device *dev,
nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
dev->dev_addr))
goto nla_put_failure;
- if (addr->addr_type == IEEE802154_ADDR_LONG) {
- if (nla_put(msg, IEEE802154_ATTR_SRC_HW_ADDR, IEEE802154_ADDR_LEN,
- addr->hwaddr))
+ if (addr->mode == IEEE802154_ADDR_LONG) {
+ if (nla_put_hwaddr(msg, IEEE802154_ATTR_SRC_HW_ADDR,
+ addr->extended_addr))
goto nla_put_failure;
} else {
- if (nla_put_u16(msg, IEEE802154_ATTR_SRC_SHORT_ADDR,
- addr->short_addr))
+ if (nla_put_shortaddr(msg, IEEE802154_ATTR_SRC_SHORT_ADDR,
+ addr->short_addr))
goto nla_put_failure;
}
if (nla_put_u8(msg, IEEE802154_ATTR_REASON, reason))
@@ -173,10 +192,9 @@ int ieee802154_nl_beacon_indic(struct net_device *dev, __le16 panid,
nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
dev->dev_addr) ||
- nla_put_u16(msg, IEEE802154_ATTR_COORD_SHORT_ADDR,
- le16_to_cpu(coord_addr)) ||
- nla_put_u16(msg, IEEE802154_ATTR_COORD_PAN_ID,
- le16_to_cpu(panid)))
+ nla_put_shortaddr(msg, IEEE802154_ATTR_COORD_SHORT_ADDR,
+ coord_addr) ||
+ nla_put_shortaddr(msg, IEEE802154_ATTR_COORD_PAN_ID, panid))
goto nla_put_failure;
return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
@@ -246,7 +264,7 @@ static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
{
void *hdr;
struct wpan_phy *phy;
- u16 short_addr, pan_id;
+ __le16 short_addr, pan_id;
pr_debug("%s\n", __func__);
@@ -258,16 +276,16 @@ static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
phy = ieee802154_mlme_ops(dev)->get_phy(dev);
BUG_ON(!phy);
- short_addr = le16_to_cpu(ieee802154_mlme_ops(dev)->get_short_addr(dev));
- pan_id = le16_to_cpu(ieee802154_mlme_ops(dev)->get_pan_id(dev));
+ short_addr = ieee802154_mlme_ops(dev)->get_short_addr(dev);
+ pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
dev->dev_addr) ||
- nla_put_u16(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) ||
- nla_put_u16(msg, IEEE802154_ATTR_PAN_ID, pan_id))
+ nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) ||
+ nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID, pan_id))
goto nla_put_failure;
wpan_phy_put(phy);
return genlmsg_end(msg, hdr);
@@ -309,7 +327,7 @@ static struct net_device *ieee802154_nl_get_dev(struct genl_info *info)
int ieee802154_associate_req(struct sk_buff *skb, struct genl_info *info)
{
struct net_device *dev;
- struct ieee802154_addr_sa addr;
+ struct ieee802154_addr addr;
u8 page;
int ret = -EOPNOTSUPP;
@@ -327,16 +345,16 @@ int ieee802154_associate_req(struct sk_buff *skb, struct genl_info *info)
goto out;
if (info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]) {
- addr.addr_type = IEEE802154_ADDR_LONG;
- nla_memcpy(addr.hwaddr,
- info->attrs[IEEE802154_ATTR_COORD_HW_ADDR],
- IEEE802154_ADDR_LEN);
+ addr.mode = IEEE802154_ADDR_LONG;
+ addr.extended_addr = nla_get_hwaddr(
+ info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]);
} else {
- addr.addr_type = IEEE802154_ADDR_SHORT;
- addr.short_addr = nla_get_u16(
+ addr.mode = IEEE802154_ADDR_SHORT;
+ addr.short_addr = nla_get_shortaddr(
info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
}
- addr.pan_id = nla_get_u16(info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
+ addr.pan_id = nla_get_shortaddr(
+ info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
if (info->attrs[IEEE802154_ATTR_PAGE])
page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
@@ -356,7 +374,7 @@ out:
int ieee802154_associate_resp(struct sk_buff *skb, struct genl_info *info)
{
struct net_device *dev;
- struct ieee802154_addr_sa addr;
+ struct ieee802154_addr addr;
int ret = -EOPNOTSUPP;
if (!info->attrs[IEEE802154_ATTR_STATUS] ||
@@ -370,13 +388,13 @@ int ieee802154_associate_resp(struct sk_buff *skb, struct genl_info *info)
if (!ieee802154_mlme_ops(dev)->assoc_resp)
goto out;
- addr.addr_type = IEEE802154_ADDR_LONG;
- nla_memcpy(addr.hwaddr, info->attrs[IEEE802154_ATTR_DEST_HW_ADDR],
- IEEE802154_ADDR_LEN);
- addr.pan_id = le16_to_cpu(ieee802154_mlme_ops(dev)->get_pan_id(dev));
+ addr.mode = IEEE802154_ADDR_LONG;
+ addr.extended_addr = nla_get_hwaddr(
+ info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]);
+ addr.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
ret = ieee802154_mlme_ops(dev)->assoc_resp(dev, &addr,
- cpu_to_le16(nla_get_u16(info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR])),
+ nla_get_shortaddr(info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]),
nla_get_u8(info->attrs[IEEE802154_ATTR_STATUS]));
out:
@@ -387,7 +405,7 @@ out:
int ieee802154_disassociate_req(struct sk_buff *skb, struct genl_info *info)
{
struct net_device *dev;
- struct ieee802154_addr_sa addr;
+ struct ieee802154_addr addr;
int ret = -EOPNOTSUPP;
if ((!info->attrs[IEEE802154_ATTR_DEST_HW_ADDR] &&
@@ -402,16 +420,15 @@ int ieee802154_disassociate_req(struct sk_buff *skb, struct genl_info *info)
goto out;
if (info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]) {
- addr.addr_type = IEEE802154_ADDR_LONG;
- nla_memcpy(addr.hwaddr,
- info->attrs[IEEE802154_ATTR_DEST_HW_ADDR],
- IEEE802154_ADDR_LEN);
+ addr.mode = IEEE802154_ADDR_LONG;
+ addr.extended_addr = nla_get_hwaddr(
+ info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]);
} else {
- addr.addr_type = IEEE802154_ADDR_SHORT;
- addr.short_addr = nla_get_u16(
+ addr.mode = IEEE802154_ADDR_SHORT;
+ addr.short_addr = nla_get_shortaddr(
info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]);
}
- addr.pan_id = le16_to_cpu(ieee802154_mlme_ops(dev)->get_pan_id(dev));
+ addr.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
ret = ieee802154_mlme_ops(dev)->disassoc_req(dev, &addr,
nla_get_u8(info->attrs[IEEE802154_ATTR_REASON]));
@@ -429,7 +446,7 @@ out:
int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
{
struct net_device *dev;
- struct ieee802154_addr_sa addr;
+ struct ieee802154_addr addr;
u8 channel, bcn_ord, sf_ord;
u8 page;
@@ -453,10 +470,11 @@ int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
if (!ieee802154_mlme_ops(dev)->start_req)
goto out;
- addr.addr_type = IEEE802154_ADDR_SHORT;
- addr.short_addr = nla_get_u16(
+ addr.mode = IEEE802154_ADDR_SHORT;
+ addr.short_addr = nla_get_shortaddr(
info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
- addr.pan_id = nla_get_u16(info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
+ addr.pan_id = nla_get_shortaddr(
+ info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
channel = nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]);
bcn_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_BCN_ORD]);
@@ -471,7 +489,7 @@ int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
page = 0;
- if (addr.short_addr == IEEE802154_ADDR_BROADCAST) {
+ if (addr.short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST)) {
ieee802154_nl_start_confirm(dev, IEEE802154_NO_SHORT_ADDRESS);
dev_put(dev);
return -EINVAL;
diff --git a/net/ieee802154/reassembly.c b/net/ieee802154/reassembly.c
index f08b37a..a2b9e4e 100644
--- a/net/ieee802154/reassembly.c
+++ b/net/ieee802154/reassembly.c
@@ -36,8 +36,8 @@ static int lowpan_frag_reasm(struct lowpan_frag_queue *fq,
struct sk_buff *prev, struct net_device *dev);
static unsigned int lowpan_hash_frag(__be16 tag, u16 d_size,
- const struct ieee802154_addr_sa *saddr,
- const struct ieee802154_addr_sa *daddr)
+ const struct ieee802154_addr *saddr,
+ const struct ieee802154_addr *daddr)
{
u32 c;
@@ -65,8 +65,8 @@ static bool lowpan_frag_match(struct inet_frag_queue *q, void *a)
fq = container_of(q, struct lowpan_frag_queue, q);
return fq->tag == arg->tag && fq->d_size == arg->d_size &&
- ieee802154_addr_addr_equal(&fq->saddr, arg->src) &&
- ieee802154_addr_addr_equal(&fq->daddr, arg->dst);
+ ieee802154_addr_equal(&fq->saddr, arg->src) &&
+ ieee802154_addr_equal(&fq->daddr, arg->dst);
}
static void lowpan_frag_init(struct inet_frag_queue *q, void *a)
@@ -103,7 +103,8 @@ out:
static inline struct lowpan_frag_queue *
fq_find(struct net *net, const struct ieee802154_frag_info *frag_info,
- const struct ieee802154_addr_sa *src, const struct ieee802154_addr_sa *dst)
+ const struct ieee802154_addr *src,
+ const struct ieee802154_addr *dst)
{
struct inet_frag_queue *q;
struct lowpan_create_arg arg;
@@ -346,8 +347,12 @@ int lowpan_frag_rcv(struct sk_buff *skb, const u8 frag_type)
struct lowpan_frag_queue *fq;
struct net *net = dev_net(skb->dev);
struct ieee802154_frag_info *frag_info = &mac_cb(skb)->frag_info;
+ struct ieee802154_addr source, dest;
int err;
+ source = mac_cb(skb)->source;
+ dest = mac_cb(skb)->dest;
+
err = lowpan_get_frag_info(skb, frag_type, frag_info);
if (err < 0)
goto err;
@@ -357,7 +362,7 @@ int lowpan_frag_rcv(struct sk_buff *skb, const u8 frag_type)
inet_frag_evictor(&net->ieee802154_lowpan.frags, &lowpan_frags, false);
- fq = fq_find(net, frag_info, &mac_cb(skb)->sa, &mac_cb(skb)->da);
+ fq = fq_find(net, frag_info, &source, &dest);
if (fq != NULL) {
int ret;
spin_lock(&fq->q.lock);
diff --git a/net/ieee802154/reassembly.h b/net/ieee802154/reassembly.h
index 895721a..74e4a7c 100644
--- a/net/ieee802154/reassembly.h
+++ b/net/ieee802154/reassembly.h
@@ -6,8 +6,8 @@
struct lowpan_create_arg {
__be16 tag;
u16 d_size;
- const struct ieee802154_addr_sa *src;
- const struct ieee802154_addr_sa *dst;
+ const struct ieee802154_addr *src;
+ const struct ieee802154_addr *dst;
};
/* Equivalent of ipv4 struct ip
@@ -17,16 +17,16 @@ struct lowpan_frag_queue {
__be16 tag;
u16 d_size;
- struct ieee802154_addr_sa saddr;
- struct ieee802154_addr_sa daddr;
+ struct ieee802154_addr saddr;
+ struct ieee802154_addr daddr;
};
-static inline u32 ieee802154_addr_hash(const struct ieee802154_addr_sa *a)
+static inline u32 ieee802154_addr_hash(const struct ieee802154_addr *a)
{
- switch (a->addr_type) {
+ switch (a->mode) {
case IEEE802154_ADDR_LONG:
- return (__force u32)((((u32 *)a->hwaddr))[0] ^
- ((u32 *)(a->hwaddr))[1]);
+ return (((__force u64)a->extended_addr) >> 32) ^
+ (((__force u64)a->extended_addr) & 0xffffffff);
case IEEE802154_ADDR_SHORT:
return (__force u32)(a->short_addr);
default:
@@ -34,32 +34,6 @@ static inline u32 ieee802154_addr_hash(const struct ieee802154_addr_sa *a)
}
}
-static inline bool
-ieee802154_addr_addr_equal(const struct ieee802154_addr_sa *a1,
- const struct ieee802154_addr_sa *a2)
-{
- if (a1->pan_id != a2->pan_id)
- return false;
-
- if (a1->addr_type != a2->addr_type)
- return false;
-
- switch (a1->addr_type) {
- case IEEE802154_ADDR_LONG:
- if (memcmp(a1->hwaddr, a2->hwaddr, IEEE802154_ADDR_LEN))
- return false;
- break;
- case IEEE802154_ADDR_SHORT:
- if (a1->short_addr != a2->short_addr)
- return false;
- break;
- default:
- return false;
- }
-
- return true;
-}
-
int lowpan_frag_rcv(struct sk_buff *skb, const u8 frag_type);
void lowpan_net_frag_exit(void);
int lowpan_net_frag_init(void);
diff --git a/net/mac802154/mac_cmd.c b/net/mac802154/mac_cmd.c
index f551ef2..15bac33 100644
--- a/net/mac802154/mac_cmd.c
+++ b/net/mac802154/mac_cmd.c
@@ -34,16 +34,16 @@
#include "mac802154.h"
static int mac802154_mlme_start_req(struct net_device *dev,
- struct ieee802154_addr_sa *addr,
+ struct ieee802154_addr *addr,
u8 channel, u8 page,
u8 bcn_ord, u8 sf_ord,
u8 pan_coord, u8 blx,
u8 coord_realign)
{
- BUG_ON(addr->addr_type != IEEE802154_ADDR_SHORT);
+ BUG_ON(addr->mode != IEEE802154_ADDR_SHORT);
- mac802154_dev_set_pan_id(dev, cpu_to_le16(addr->pan_id));
- mac802154_dev_set_short_addr(dev, cpu_to_le16(addr->short_addr));
+ mac802154_dev_set_pan_id(dev, addr->pan_id);
+ mac802154_dev_set_short_addr(dev, addr->short_addr);
mac802154_dev_set_ieee_addr(dev);
mac802154_dev_set_page_channel(dev, page, channel);
diff --git a/net/mac802154/wpan.c b/net/mac802154/wpan.c
index 051ed46..b614266 100644
--- a/net/mac802154/wpan.c
+++ b/net/mac802154/wpan.c
@@ -251,18 +251,18 @@ static int mac802154_process_data(struct net_device *dev, struct sk_buff *skb)
static int
mac802154_subif_frame(struct mac802154_sub_if_data *sdata, struct sk_buff *skb)
{
- u16 span, sshort;
+ __le16 span, sshort;
pr_debug("getting packet via slave interface %s\n", sdata->dev->name);
spin_lock_bh(&sdata->mib_lock);
- span = le16_to_cpu(sdata->pan_id);
- sshort = le16_to_cpu(sdata->short_addr);
+ span = sdata->pan_id;
+ sshort = sdata->short_addr;
- switch (mac_cb(skb)->da.addr_type) {
+ switch (mac_cb(skb)->dest.mode) {
case IEEE802154_ADDR_NONE:
- if (mac_cb(skb)->sa.addr_type != IEEE802154_ADDR_NONE)
+ if (mac_cb(skb)->dest.mode != IEEE802154_ADDR_NONE)
/* FIXME: check if we are PAN coordinator */
skb->pkt_type = PACKET_OTHERHOST;
else
@@ -270,23 +270,22 @@ mac802154_subif_frame(struct mac802154_sub_if_data *sdata, struct sk_buff *skb)
skb->pkt_type = PACKET_HOST;
break;
case IEEE802154_ADDR_LONG:
- if (mac_cb(skb)->da.pan_id != span &&
- mac_cb(skb)->da.pan_id != IEEE802154_PANID_BROADCAST)
+ if (mac_cb(skb)->dest.pan_id != span &&
+ mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
skb->pkt_type = PACKET_OTHERHOST;
- else if (!memcmp(mac_cb(skb)->da.hwaddr, sdata->dev->dev_addr,
- IEEE802154_ADDR_LEN))
+ else if (mac_cb(skb)->dest.extended_addr == sdata->extended_addr)
skb->pkt_type = PACKET_HOST;
else
skb->pkt_type = PACKET_OTHERHOST;
break;
case IEEE802154_ADDR_SHORT:
- if (mac_cb(skb)->da.pan_id != span &&
- mac_cb(skb)->da.pan_id != IEEE802154_PANID_BROADCAST)
+ if (mac_cb(skb)->dest.pan_id != span &&
+ mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
skb->pkt_type = PACKET_OTHERHOST;
- else if (mac_cb(skb)->da.short_addr == sshort)
+ else if (mac_cb(skb)->dest.short_addr == sshort)
skb->pkt_type = PACKET_HOST;
- else if (mac_cb(skb)->da.short_addr ==
- IEEE802154_ADDR_BROADCAST)
+ else if (mac_cb(skb)->dest.short_addr ==
+ cpu_to_le16(IEEE802154_ADDR_BROADCAST))
skb->pkt_type = PACKET_BROADCAST;
else
skb->pkt_type = PACKET_OTHERHOST;
@@ -332,8 +331,8 @@ static void mac802154_print_addr(const char *name,
static int mac802154_parse_frame_start(struct sk_buff *skb)
{
- struct ieee802154_hdr hdr;
int hlen;
+ struct ieee802154_hdr hdr;
hlen = ieee802154_hdr_pull(skb, &hdr);
if (hlen < 0)
@@ -346,9 +345,6 @@ static int mac802154_parse_frame_start(struct sk_buff *skb)
mac_cb(skb)->flags = hdr.fc.type;
- ieee802154_addr_to_sa(&mac_cb(skb)->sa, &hdr.source);
- ieee802154_addr_to_sa(&mac_cb(skb)->da, &hdr.dest);
-
if (hdr.fc.ack_request)
mac_cb(skb)->flags |= MAC_CB_FLAG_ACKREQ;
if (hdr.fc.security_enabled)
@@ -357,6 +353,9 @@ static int mac802154_parse_frame_start(struct sk_buff *skb)
mac802154_print_addr("destination", &hdr.dest);
mac802154_print_addr("source", &hdr.source);
+ mac_cb(skb)->source = hdr.source;
+ mac_cb(skb)->dest = hdr.dest;
+
if (hdr.fc.security_enabled) {
u64 key;
--
1.9.0
------------------------------------------------------------------------------
Learn Graph Databases - Download FREE O'Reilly Book
"Graph Databases" is the definitive new guide to graph databases and their
applications. Written by three acclaimed leaders in the field,
this first edition is now available. Download your free book today!
http://p.sf.net/sfu/13534_NeoTech
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH net-next v2 7/8] 6lowpan: move lowpan frag_info out of 802.15.4 headers
[not found] ` <1394828644-19898-1-git-send-email-phoebe.buckheister-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
` (4 preceding siblings ...)
2014-03-14 20:24 ` [PATCH net-next v2 6/8] ieee802154: use ieee802154_addr instead of *_sa variants Phoebe Buckheister
@ 2014-03-14 20:24 ` Phoebe Buckheister
2014-03-14 20:24 ` [PATCH net-next v2 8/8] ieee802154: add proper length checks to header creations Phoebe Buckheister
6 siblings, 0 replies; 10+ messages in thread
From: Phoebe Buckheister @ 2014-03-14 20:24 UTC (permalink / raw)
To: netdev-u79uwXL29TY76Z2rM5mHXA
Cc: davem-fT/PcQaiUtIeIZ0/mPfg9Q,
linux-zigbee-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f
Fragmentation and reassembly information for 6lowpan is independent from
the 802.15.4 stack and used only by the 6lowpan reassembly process. Move
the ieee802154_frag_info struct to a private are, it needn't be in the
802.15.4 skb control block.
Signed-off-by: Phoebe Buckheister <phoebe.buckheister-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
---
include/net/ieee802154_netdev.h | 8 --------
net/ieee802154/reassembly.c | 27 ++++++++++++++++++---------
2 files changed, 18 insertions(+), 17 deletions(-)
diff --git a/include/net/ieee802154_netdev.h b/include/net/ieee802154_netdev.h
index 827e3e3..e1717cb 100644
--- a/include/net/ieee802154_netdev.h
+++ b/include/net/ieee802154_netdev.h
@@ -187,13 +187,6 @@ static inline void ieee802154_addr_to_sa(struct ieee802154_addr_sa *sa,
}
}
-
-struct ieee802154_frag_info {
- __be16 d_tag;
- u16 d_size;
- u8 d_offset;
-};
-
/*
* A control block of skb passed between the ARPHRD_IEEE802154 device
* and other stack parts.
@@ -202,7 +195,6 @@ struct ieee802154_mac_cb {
u8 lqi;
u8 flags;
u8 seq;
- struct ieee802154_frag_info frag_info;
struct ieee802154_addr source;
struct ieee802154_addr dest;
};
diff --git a/net/ieee802154/reassembly.c b/net/ieee802154/reassembly.c
index a2b9e4e..ef2d543 100644
--- a/net/ieee802154/reassembly.c
+++ b/net/ieee802154/reassembly.c
@@ -30,6 +30,17 @@
#include "reassembly.h"
+struct lowpan_frag_info {
+ __be16 d_tag;
+ u16 d_size;
+ u8 d_offset;
+};
+
+struct lowpan_frag_info *lowpan_cb(struct sk_buff *skb)
+{
+ return (struct lowpan_frag_info *)skb->cb;
+}
+
static struct inet_frags lowpan_frags;
static int lowpan_frag_reasm(struct lowpan_frag_queue *fq,
@@ -102,7 +113,7 @@ out:
}
static inline struct lowpan_frag_queue *
-fq_find(struct net *net, const struct ieee802154_frag_info *frag_info,
+fq_find(struct net *net, const struct lowpan_frag_info *frag_info,
const struct ieee802154_addr *src,
const struct ieee802154_addr *dst)
{
@@ -137,8 +148,8 @@ static int lowpan_frag_queue(struct lowpan_frag_queue *fq,
if (fq->q.last_in & INET_FRAG_COMPLETE)
goto err;
- offset = mac_cb(skb)->frag_info.d_offset << 3;
- end = mac_cb(skb)->frag_info.d_size;
+ offset = lowpan_cb(skb)->d_offset << 3;
+ end = lowpan_cb(skb)->d_size;
/* Is this the final fragment? */
if (offset + skb->len == end) {
@@ -164,15 +175,13 @@ static int lowpan_frag_queue(struct lowpan_frag_queue *fq,
* this fragment, right?
*/
prev = fq->q.fragments_tail;
- if (!prev || mac_cb(prev)->frag_info.d_offset <
- mac_cb(skb)->frag_info.d_offset) {
+ if (!prev || lowpan_cb(prev)->d_offset < lowpan_cb(skb)->d_offset) {
next = NULL;
goto found;
}
prev = NULL;
for (next = fq->q.fragments; next != NULL; next = next->next) {
- if (mac_cb(next)->frag_info.d_offset >=
- mac_cb(skb)->frag_info.d_offset)
+ if (lowpan_cb(next)->d_offset >= lowpan_cb(skb)->d_offset)
break; /* bingo! */
prev = next;
}
@@ -319,7 +328,7 @@ out_oom:
}
static int lowpan_get_frag_info(struct sk_buff *skb, const u8 frag_type,
- struct ieee802154_frag_info *frag_info)
+ struct lowpan_frag_info *frag_info)
{
bool fail;
u8 pattern = 0, low = 0;
@@ -346,7 +355,7 @@ int lowpan_frag_rcv(struct sk_buff *skb, const u8 frag_type)
{
struct lowpan_frag_queue *fq;
struct net *net = dev_net(skb->dev);
- struct ieee802154_frag_info *frag_info = &mac_cb(skb)->frag_info;
+ struct lowpan_frag_info *frag_info = lowpan_cb(skb);
struct ieee802154_addr source, dest;
int err;
--
1.9.0
------------------------------------------------------------------------------
Learn Graph Databases - Download FREE O'Reilly Book
"Graph Databases" is the definitive new guide to graph databases and their
applications. Written by three acclaimed leaders in the field,
this first edition is now available. Download your free book today!
http://p.sf.net/sfu/13534_NeoTech
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH net-next v2 8/8] ieee802154: add proper length checks to header creations
[not found] ` <1394828644-19898-1-git-send-email-phoebe.buckheister-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
` (5 preceding siblings ...)
2014-03-14 20:24 ` [PATCH net-next v2 7/8] 6lowpan: move lowpan frag_info out of 802.15.4 headers Phoebe Buckheister
@ 2014-03-14 20:24 ` Phoebe Buckheister
6 siblings, 0 replies; 10+ messages in thread
From: Phoebe Buckheister @ 2014-03-14 20:24 UTC (permalink / raw)
To: netdev-u79uwXL29TY76Z2rM5mHXA
Cc: davem-fT/PcQaiUtIeIZ0/mPfg9Q,
linux-zigbee-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f
Have mac802154 header_ops.create fail with -EMSGSIZE if the length
passed will be too large to fit a frame. Since 6lowpan will ensure that
no packet payload will be too large, pass a length of 0 there. 802.15.4
dgram sockets will also return -EMSGSIZE on payloads larger than the
device MTU instead of -EINVAL.
Signed-off-by: Phoebe Buckheister <phoebe.buckheister-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
---
net/ieee802154/6lowpan_rtnl.c | 2 +-
net/ieee802154/dgram.c | 2 +-
net/mac802154/wpan.c | 3 +++
3 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/net/ieee802154/6lowpan_rtnl.c b/net/ieee802154/6lowpan_rtnl.c
index d4edd20..6060394 100644
--- a/net/ieee802154/6lowpan_rtnl.c
+++ b/net/ieee802154/6lowpan_rtnl.c
@@ -141,7 +141,7 @@ static int lowpan_header_create(struct sk_buff *skb,
}
return dev_hard_header(skb, lowpan_dev_info(dev)->real_dev,
- type, (void *)&da, (void *)&sa, skb->len);
+ type, (void *)&da, (void *)&sa, 0);
}
static int lowpan_give_skb_to_devices(struct sk_buff *skb,
diff --git a/net/ieee802154/dgram.c b/net/ieee802154/dgram.c
index 55f2dc4..4c47154 100644
--- a/net/ieee802154/dgram.c
+++ b/net/ieee802154/dgram.c
@@ -233,7 +233,7 @@ static int dgram_sendmsg(struct kiocb *iocb, struct sock *sk,
if (size > mtu) {
pr_debug("size = %Zu, mtu = %u\n", size, mtu);
- err = -EINVAL;
+ err = -EMSGSIZE;
goto out_dev;
}
diff --git a/net/mac802154/wpan.c b/net/mac802154/wpan.c
index b614266..80cbee1 100644
--- a/net/mac802154/wpan.c
+++ b/net/mac802154/wpan.c
@@ -150,6 +150,9 @@ static int mac802154_header_create(struct sk_buff *skb,
skb_reset_mac_header(skb);
skb->mac_len = hlen;
+ if (hlen + len + 2 > dev->mtu)
+ return -EMSGSIZE;
+
return hlen;
}
--
1.9.0
------------------------------------------------------------------------------
Learn Graph Databases - Download FREE O'Reilly Book
"Graph Databases" is the definitive new guide to graph databases and their
applications. Written by three acclaimed leaders in the field,
this first edition is now available. Download your free book today!
http://p.sf.net/sfu/13534_NeoTech
^ permalink raw reply related [flat|nested] 10+ messages in thread