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authorLuis Carlos Cobo <luisca@cozybit.com>2008-04-23 12:15:29 -0700
committerJohn W. Linville <linville@tuxdriver.com>2008-04-30 20:34:26 -0400
commit51ceddade0fb1e15f080b2555f3b3e1d68c6707e (patch)
tree341183c318900251890f341e4b672f33791ae6b1
parent809917903127804c2b2ac76342ab0f29f4b394d3 (diff)
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mac80211: use 4-byte mesh sequence number
This follows the new 802.11s/D2.0 draft. Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--include/linux/ieee80211.h2
-rw-r--r--net/mac80211/ieee80211_i.h2
-rw-r--r--net/mac80211/mesh.c17
-rw-r--r--net/mac80211/mesh.h2
4 files changed, 8 insertions, 15 deletions
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 529f301d9372..0b5e03eae6d2 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -113,7 +113,7 @@ struct ieee80211_hdr {
struct ieee80211s_hdr {
u8 flags;
u8 ttl;
- u8 seqnum[3];
+ __le32 seqnum;
u8 eaddr1[6];
u8 eaddr2[6];
u8 eaddr3[6];
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 8e53ce7ed444..c7314bf4bec2 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -354,7 +354,7 @@ struct ieee80211_if_sta {
int preq_queue_len;
struct mesh_stats mshstats;
struct mesh_config mshcfg;
- u8 mesh_seqnum[3];
+ u32 mesh_seqnum;
bool accepting_plinks;
#endif
u16 aid;
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 594a3356a508..f76bc26ae4d2 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -8,6 +8,7 @@
* published by the Free Software Foundation.
*/
+#include <asm/unaligned.h>
#include "ieee80211_i.h"
#include "mesh.h"
@@ -167,8 +168,8 @@ int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
struct rmc_entry *p, *n;
/* Don't care about endianness since only match matters */
- memcpy(&seqnum, mesh_hdr->seqnum, sizeof(mesh_hdr->seqnum));
- idx = mesh_hdr->seqnum[0] & rmc->idx_mask;
+ memcpy(&seqnum, &mesh_hdr->seqnum, sizeof(mesh_hdr->seqnum));
+ idx = le32_to_cpu(mesh_hdr->seqnum) & rmc->idx_mask;
list_for_each_entry_safe(p, n, &rmc->bucket[idx].list, list) {
++entries;
if (time_after(jiffies, p->exp_time) ||
@@ -393,16 +394,8 @@ int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
{
meshhdr->flags = 0;
meshhdr->ttl = sdata->u.sta.mshcfg.dot11MeshTTL;
-
- meshhdr->seqnum[0] = sdata->u.sta.mesh_seqnum[0]++;
- meshhdr->seqnum[1] = sdata->u.sta.mesh_seqnum[1];
- meshhdr->seqnum[2] = sdata->u.sta.mesh_seqnum[2];
-
- if (sdata->u.sta.mesh_seqnum[0] == 0) {
- sdata->u.sta.mesh_seqnum[1]++;
- if (sdata->u.sta.mesh_seqnum[1] == 0)
- sdata->u.sta.mesh_seqnum[2]++;
- }
+ put_unaligned(cpu_to_le32(sdata->u.sta.mesh_seqnum), &meshhdr->seqnum);
+ sdata->u.sta.mesh_seqnum++;
return 5;
}
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 742003d3a841..9f8cb7690498 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -139,7 +139,7 @@ struct rmc_entry {
struct mesh_rmc {
struct rmc_entry bucket[RMC_BUCKETS];
- u8 idx_mask;
+ u32 idx_mask;
};