mac80211: replace "destination" with "target" to follow the spec

Resulting object files have the same MD5 as before.

Signed-off-by: Rui Paulo <rpaulo@gmail.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Reviewed-by: Andrey Yurovsky <andrey@cozybit.com>
Tested-by: Brian Cavagnolo <brian@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

6 files changed, 133 insertions, 130 deletions

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 576b86f81d1b..81053587e72b 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -935,7 +935,7 @@ static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
         pinfo->generation = mesh_paths_generation;
 
         pinfo->filled = MPATH_INFO_FRAME_QLEN |
-                        MPATH_INFO_DSN |
+                        MPATH_INFO_SN |
                         MPATH_INFO_METRIC |
                         MPATH_INFO_EXPTIME |
                         MPATH_INFO_DISCOVERY_TIMEOUT |
@@ -943,7 +943,7 @@ static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
                         MPATH_INFO_FLAGS;
 
         pinfo->frame_qlen = mpath->frame_queue.qlen;
-        pinfo->dsn = mpath->dsn;
+        pinfo->sn = mpath->sn;
         pinfo->metric = mpath->metric;
         if (time_before(jiffies, mpath->exp_time))
                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
@@ -955,8 +955,8 @@ static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
         if (mpath->flags & MESH_PATH_RESOLVING)
                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
-        if (mpath->flags & MESH_PATH_DSN_VALID)
-                pinfo->flags |= NL80211_MPATH_FLAG_DSN_VALID;
+        if (mpath->flags & MESH_PATH_SN_VALID)
+                pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
         if (mpath->flags & MESH_PATH_FIXED)
                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
         if (mpath->flags & MESH_PATH_RESOLVING)
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 2a7d3d4067e1..fb54ddb9b27d 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -373,14 +373,14 @@ struct ieee80211_if_mesh {
         u8 mesh_sp_id;
         /* Authentication Protocol Identifier */
         u8 mesh_auth_id;
-        /* Local mesh Destination Sequence Number */
-        u32 dsn;
+        /* Local mesh Sequence Number */
+        u32 sn;
         /* Last used PREQ ID */
         u32 preq_id;
         atomic_t mpaths;
-        /* Timestamp of last DSN update */
-        unsigned long last_dsn_update;
-        /* Timestamp of last DSN sent */
+        /* Timestamp of last SN update */
+        unsigned long last_sn_update;
+        /* Timestamp of last SN sent */
         unsigned long last_preq;
         struct mesh_rmc *rmc;
         spinlock_t mesh_preq_queue_lock;
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 222a31338390..0f3e1147ec4f 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -672,7 +672,7 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
                 MESH_MIN_DISCOVERY_TIMEOUT;
         ifmsh->accepting_plinks = true;
         ifmsh->preq_id = 0;
-        ifmsh->dsn = 0;
+        ifmsh->sn = 0;
         atomic_set(&ifmsh->mpaths, 0);
         mesh_rmc_init(sdata);
         ifmsh->last_preq = jiffies;
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 1d534c702406..ee687add3927 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -26,7 +26,7 @@
  *
  * @MESH_PATH_ACTIVE: the mesh path can be used for forwarding
  * @MESH_PATH_RESOLVING: the discovery process is running for this mesh path
- * @MESH_PATH_DSN_VALID: the mesh path contains a valid destination sequence
+ * @MESH_PATH_SN_VALID: the mesh path contains a valid destination sequence
  *      number
  * @MESH_PATH_FIXED: the mesh path has been manually set and should not be
  *      modified
@@ -38,7 +38,7 @@
 enum mesh_path_flags {
         MESH_PATH_ACTIVE =      BIT(0),
         MESH_PATH_RESOLVING =   BIT(1),
-        MESH_PATH_DSN_VALID =   BIT(2),
+        MESH_PATH_SN_VALID =    BIT(2),
         MESH_PATH_FIXED =       BIT(3),
         MESH_PATH_RESOLVED =    BIT(4),
 };
@@ -70,7 +70,7 @@ enum mesh_deferred_task_flags {
  * @timer: mesh path discovery timer
  * @frame_queue: pending queue for frames sent to this destination while the
  *      path is unresolved
- * @dsn: destination sequence number of the destination
+ * @sn: target sequence number
  * @metric: current metric to this destination
  * @hop_count: hops to destination
  * @exp_time: in jiffies, when the path will expire or when it expired
@@ -94,7 +94,7 @@ struct mesh_path {
         struct timer_list timer;
         struct sk_buff_head frame_queue;
         struct rcu_head rcu;
-        u32 dsn;
+        u32 sn;
         u32 metric;
         u8 hop_count;
         unsigned long exp_time;
@@ -280,7 +280,7 @@ void mesh_mpp_table_grow(void);
 u32 mesh_table_hash(u8 *addr, struct ieee80211_sub_if_data *sdata,
                 struct mesh_table *tbl);
 /* Mesh paths */
-int mesh_path_error_tx(u8 ttl, u8 *dest, __le32 dest_dsn, __le16 dest_rcode,
+int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn, __le16 target_rcode,
                 u8 *ra, struct ieee80211_sub_if_data *sdata);
 void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta);
 void mesh_path_flush_pending(struct mesh_path *mpath);
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 7d36f3a741a5..f03a27dfd616 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -56,33 +56,33 @@ static inline u32 u16_field_get(u8 *preq_elem, int offset, bool ae)
 #define PREQ_IE_TTL(x)          (*(x + 2))
 #define PREQ_IE_PREQ_ID(x)      u32_field_get(x, 3, 0)
 #define PREQ_IE_ORIG_ADDR(x)    (x + 7)
-#define PREQ_IE_ORIG_DSN(x)     u32_field_get(x, 13, 0);
+#define PREQ_IE_ORIG_SN(x)      u32_field_get(x, 13, 0);
 #define PREQ_IE_LIFETIME(x)     u32_field_get(x, 17, AE_F_SET(x));
 #define PREQ_IE_METRIC(x)       u32_field_get(x, 21, AE_F_SET(x));
-#define PREQ_IE_DST_F(x)        (*(AE_F_SET(x) ? x + 32 : x + 26))
-#define PREQ_IE_DST_ADDR(x)     (AE_F_SET(x) ? x + 33 : x + 27)
-#define PREQ_IE_DST_DSN(x)      u32_field_get(x, 33, AE_F_SET(x));
+#define PREQ_IE_TARGET_F(x)     (*(AE_F_SET(x) ? x + 32 : x + 26))
+#define PREQ_IE_TARGET_ADDR(x)  (AE_F_SET(x) ? x + 33 : x + 27)
+#define PREQ_IE_TARGET_SN(x)    u32_field_get(x, 33, AE_F_SET(x));
 
 
 #define PREP_IE_FLAGS(x)        PREQ_IE_FLAGS(x)
 #define PREP_IE_HOPCOUNT(x)     PREQ_IE_HOPCOUNT(x)
 #define PREP_IE_TTL(x)          PREQ_IE_TTL(x)
 #define PREP_IE_ORIG_ADDR(x)    (x + 3)
-#define PREP_IE_ORIG_DSN(x)     u32_field_get(x, 9, 0);
+#define PREP_IE_ORIG_SN(x)      u32_field_get(x, 9, 0);
 #define PREP_IE_LIFETIME(x)     u32_field_get(x, 13, AE_F_SET(x));
 #define PREP_IE_METRIC(x)       u32_field_get(x, 17, AE_F_SET(x));
-#define PREP_IE_DST_ADDR(x)     (AE_F_SET(x) ? x + 27 : x + 21)
-#define PREP_IE_DST_DSN(x)      u32_field_get(x, 27, AE_F_SET(x));
+#define PREP_IE_TARGET_ADDR(x)  (AE_F_SET(x) ? x + 27 : x + 21)
+#define PREP_IE_TARGET_SN(x)    u32_field_get(x, 27, AE_F_SET(x));
 
 #define PERR_IE_TTL(x)          (*(x))
-#define PERR_IE_DST_FLAGS(x)    (*(x + 2))
-#define PERR_IE_DST_ADDR(x)     (x + 3)
-#define PERR_IE_DST_DSN(x)      u32_field_get(x, 9, 0);
-#define PERR_IE_DST_RCODE(x)    u16_field_get(x, 13, 0);
+#define PERR_IE_TARGET_FLAGS(x) (*(x + 2))
+#define PERR_IE_TARGET_ADDR(x)  (x + 3)
+#define PERR_IE_TARGET_SN(x)    u32_field_get(x, 9, 0);
+#define PERR_IE_TARGET_RCODE(x) u16_field_get(x, 13, 0);
 
 #define MSEC_TO_TU(x) (x*1000/1024)
-#define DSN_GT(x, y) ((long) (y) - (long) (x) < 0)
-#define DSN_LT(x, y) ((long) (x) - (long) (y) < 0)
+#define SN_GT(x, y) ((long) (y) - (long) (x) < 0)
+#define SN_LT(x, y) ((long) (x) - (long) (y) < 0)
 
 #define net_traversal_jiffies(s) \
         msecs_to_jiffies(s->u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime)
@@ -102,9 +102,10 @@ enum mpath_frame_type {
 };
 
 static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
-                u8 *orig_addr, __le32 orig_dsn, u8 dst_flags, u8 *dst,
-                __le32 dst_dsn, u8 *da, u8 hop_count, u8 ttl, __le32 lifetime,
-                __le32 metric, __le32 preq_id, struct ieee80211_sub_if_data *sdata)
+                u8 *orig_addr, __le32 orig_sn, u8 target_flags, u8 *target,
+                __le32 target_sn, u8 *da, u8 hop_count, u8 ttl,__le32 lifetime,
+                __le32 metric, __le32 preq_id,
+                struct ieee80211_sub_if_data *sdata)
 {
         struct ieee80211_local *local = sdata->local;
         struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
@@ -133,13 +134,13 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
 
         switch (action) {
         case MPATH_PREQ:
-                mhwmp_dbg("sending PREQ to %pM\n", dst);
+                mhwmp_dbg("sending PREQ to %pM\n", target);
                 ie_len = 37;
                 pos = skb_put(skb, 2 + ie_len);
                 *pos++ = WLAN_EID_PREQ;
                 break;
         case MPATH_PREP:
-                mhwmp_dbg("sending PREP to %pM\n", dst);
+                mhwmp_dbg("sending PREP to %pM\n", target);
                 ie_len = 31;
                 pos = skb_put(skb, 2 + ie_len);
                 *pos++ = WLAN_EID_PREP;
@@ -165,7 +166,7 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
         }
         memcpy(pos, orig_addr, ETH_ALEN);
         pos += ETH_ALEN;
-        memcpy(pos, &orig_dsn, 4);
+        memcpy(pos, &orig_sn, 4);
         pos += 4;
         if (action != MPATH_RANN) {
                 memcpy(pos, &lifetime, 4);
@@ -176,12 +177,12 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
         if (action == MPATH_PREQ) {
                 /* destination count */
                 *pos++ = 1;
-                *pos++ = dst_flags;
+                *pos++ = target_flags;
         }
         if (action != MPATH_RANN) {
-                memcpy(pos, dst, ETH_ALEN);
+                memcpy(pos, target, ETH_ALEN);
                 pos += ETH_ALEN;
-                memcpy(pos, &dst_dsn, 4);
+                memcpy(pos, &target_sn, 4);
         }
 
         ieee80211_tx_skb(sdata, skb, 1);
@@ -191,12 +192,14 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
 /**
  * mesh_send_path error - Sends a PERR mesh management frame
  *
- * @dst: broken destination
- * @dst_dsn: dsn of the broken destination
+ * @target: broken destination
+ * @target_sn: SN of the broken destination
+ * @target_rcode: reason code for this PERR
  * @ra: node this frame is addressed to
  */
-int mesh_path_error_tx(u8 ttl, u8 *dst, __le32 dst_dsn, __le16 dst_rcode,
-                u8 *ra, struct ieee80211_sub_if_data *sdata)
+int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn,
+                __le16 target_rcode, u8 *ra,
+                struct ieee80211_sub_if_data *sdata)
 {
         struct ieee80211_local *local = sdata->local;
         struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
@@ -234,16 +237,16 @@ int mesh_path_error_tx(u8 ttl, u8 *dst, __le32 dst_dsn, __le16 dst_rcode,
          * bit 2 is set if we have a reason code
          */
         *pos = 0;
-        if (!dst_dsn)
+        if (!target_sn)
                 *pos |= MP_F_USN;
-        if (dst_rcode)
+        if (target_rcode)
                 *pos |= MP_F_RCODE;
         pos++;
-        memcpy(pos, dst, ETH_ALEN);
+        memcpy(pos, target, ETH_ALEN);
         pos += ETH_ALEN;
-        memcpy(pos, &dst_dsn, 4);
+        memcpy(pos, &target_sn, 4);
         pos += 4;
-        memcpy(pos, &dst_rcode, 2);
+        memcpy(pos, &target_rcode, 2);
 
         ieee80211_tx_skb(sdata, skb, 1);
         return 0;
@@ -324,7 +327,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
         struct sta_info *sta;
         bool fresh_info;
         u8 *orig_addr, *ta;
-        u32 orig_dsn, orig_metric;
+        u32 orig_sn, orig_metric;
         unsigned long orig_lifetime, exp_time;
         u32 last_hop_metric, new_metric;
         bool process = true;
@@ -343,7 +346,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
         switch (action) {
         case MPATH_PREQ:
                 orig_addr = PREQ_IE_ORIG_ADDR(hwmp_ie);
-                orig_dsn = PREQ_IE_ORIG_DSN(hwmp_ie);
+                orig_sn = PREQ_IE_ORIG_SN(hwmp_ie);
                 orig_lifetime = PREQ_IE_LIFETIME(hwmp_ie);
                 orig_metric = PREQ_IE_METRIC(hwmp_ie);
                 break;
@@ -356,7 +359,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
                  * information from both PREQ and PREP frames.
                  */
                 orig_addr = PREP_IE_ORIG_ADDR(hwmp_ie);
-                orig_dsn = PREP_IE_ORIG_DSN(hwmp_ie);
+                orig_sn = PREP_IE_ORIG_SN(hwmp_ie);
                 orig_lifetime = PREP_IE_LIFETIME(hwmp_ie);
                 orig_metric = PREP_IE_METRIC(hwmp_ie);
                 break;
@@ -382,9 +385,9 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
                         if (mpath->flags & MESH_PATH_FIXED)
                                 fresh_info = false;
                         else if ((mpath->flags & MESH_PATH_ACTIVE) &&
-                            (mpath->flags & MESH_PATH_DSN_VALID)) {
-                                if (DSN_GT(mpath->dsn, orig_dsn) ||
-                                    (mpath->dsn == orig_dsn &&
+                            (mpath->flags & MESH_PATH_SN_VALID)) {
+                                if (SN_GT(mpath->sn, orig_sn) ||
+                                    (mpath->sn == orig_sn &&
                                      action == MPATH_PREQ &&
                                      new_metric > mpath->metric)) {
                                         process = false;
@@ -403,9 +406,9 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
 
                 if (fresh_info) {
                         mesh_path_assign_nexthop(mpath, sta);
-                        mpath->flags |= MESH_PATH_DSN_VALID;
+                        mpath->flags |= MESH_PATH_SN_VALID;
                         mpath->metric = new_metric;
-                        mpath->dsn = orig_dsn;
+                        mpath->sn = orig_sn;
                         mpath->exp_time = time_after(mpath->exp_time, exp_time)
                                           ?  mpath->exp_time : exp_time;
                         mesh_path_activate(mpath);
@@ -444,7 +447,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
 
                 if (fresh_info) {
                         mesh_path_assign_nexthop(mpath, sta);
-                        mpath->flags &= ~MESH_PATH_DSN_VALID;
+                        mpath->flags &= ~MESH_PATH_SN_VALID;
                         mpath->metric = last_hop_metric;
                         mpath->exp_time = time_after(mpath->exp_time, exp_time)
                                           ?  mpath->exp_time : exp_time;
@@ -466,47 +469,47 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
 {
         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
         struct mesh_path *mpath;
-        u8 *dst_addr, *orig_addr;
-        u8 dst_flags, ttl;
-        u32 orig_dsn, dst_dsn, lifetime;
+        u8 *target_addr, *orig_addr;
+        u8 target_flags, ttl;
+        u32 orig_sn, target_sn, lifetime;
         bool reply = false;
         bool forward = true;
 
-        /* Update destination DSN, if present */
-        dst_addr = PREQ_IE_DST_ADDR(preq_elem);
+        /* Update target SN, if present */
+        target_addr = PREQ_IE_TARGET_ADDR(preq_elem);
         orig_addr = PREQ_IE_ORIG_ADDR(preq_elem);
-        dst_dsn = PREQ_IE_DST_DSN(preq_elem);
-        orig_dsn = PREQ_IE_ORIG_DSN(preq_elem);
-        dst_flags = PREQ_IE_DST_F(preq_elem);
+        target_sn = PREQ_IE_TARGET_SN(preq_elem);
+        orig_sn = PREQ_IE_ORIG_SN(preq_elem);
+        target_flags = PREQ_IE_TARGET_F(preq_elem);
 
         mhwmp_dbg("received PREQ from %pM\n", orig_addr);
 
-        if (memcmp(dst_addr, sdata->dev->dev_addr, ETH_ALEN) == 0) {
+        if (memcmp(target_addr, sdata->dev->dev_addr, ETH_ALEN) == 0) {
                 mhwmp_dbg("PREQ is for us\n");
                 forward = false;
                 reply = true;
                 metric = 0;
-                if (time_after(jiffies, ifmsh->last_dsn_update +
+                if (time_after(jiffies, ifmsh->last_sn_update +
                                         net_traversal_jiffies(sdata)) ||
-                    time_before(jiffies, ifmsh->last_dsn_update)) {
-                        dst_dsn = ++ifmsh->dsn;
-                        ifmsh->last_dsn_update = jiffies;
+                    time_before(jiffies, ifmsh->last_sn_update)) {
+                        target_sn = ++ifmsh->sn;
+                        ifmsh->last_sn_update = jiffies;
                 }
         } else {
                 rcu_read_lock();
-                mpath = mesh_path_lookup(dst_addr, sdata);
+                mpath = mesh_path_lookup(target_addr, sdata);
                 if (mpath) {
-                        if ((!(mpath->flags & MESH_PATH_DSN_VALID)) ||
-                                        DSN_LT(mpath->dsn, dst_dsn)) {
-                                mpath->dsn = dst_dsn;
-                                mpath->flags |= MESH_PATH_DSN_VALID;
-                        } else if ((!(dst_flags & MP_F_DO)) &&
+                        if ((!(mpath->flags & MESH_PATH_SN_VALID)) ||
+                                        SN_LT(mpath->sn, target_sn)) {
+                                mpath->sn = target_sn;
+                                mpath->flags |= MESH_PATH_SN_VALID;
+                        } else if ((!(target_flags & MP_F_DO)) &&
                                         (mpath->flags & MESH_PATH_ACTIVE)) {
                                 reply = true;
                                 metric = mpath->metric;
-                                dst_dsn = mpath->dsn;
-                                if (dst_flags & MP_F_RF)
-                                        dst_flags |= MP_F_DO;
+                                target_sn = mpath->sn;
+                                if (target_flags & MP_F_RF)
+                                        target_flags |= MP_F_DO;
                                 else
                                         forward = false;
                         }
@@ -519,9 +522,9 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
                 ttl = ifmsh->mshcfg.dot11MeshTTL;
                 if (ttl != 0) {
                         mhwmp_dbg("replying to the PREQ\n");
-                        mesh_path_sel_frame_tx(MPATH_PREP, 0, dst_addr,
-                                cpu_to_le32(dst_dsn), 0, orig_addr,
-                                cpu_to_le32(orig_dsn), mgmt->sa, 0, ttl,
+                        mesh_path_sel_frame_tx(MPATH_PREP, 0, target_addr,
+                                cpu_to_le32(target_sn), 0, orig_addr,
+                                cpu_to_le32(orig_sn), mgmt->sa, 0, ttl,
                                 cpu_to_le32(lifetime), cpu_to_le32(metric),
                                 0, sdata);
                 } else
@@ -544,8 +547,8 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
                 preq_id = PREQ_IE_PREQ_ID(preq_elem);
                 hopcount = PREQ_IE_HOPCOUNT(preq_elem) + 1;
                 mesh_path_sel_frame_tx(MPATH_PREQ, flags, orig_addr,
-                                cpu_to_le32(orig_dsn), dst_flags, dst_addr,
-                                cpu_to_le32(dst_dsn), sdata->dev->broadcast,
+                                cpu_to_le32(orig_sn), target_flags, target_addr,
+                                cpu_to_le32(target_sn), sdata->dev->broadcast,
                                 hopcount, ttl, cpu_to_le32(lifetime),
                                 cpu_to_le32(metric), cpu_to_le32(preq_id),
                                 sdata);
@@ -560,10 +563,10 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
                                     u8 *prep_elem, u32 metric)
 {
         struct mesh_path *mpath;
-        u8 *dst_addr, *orig_addr;
+        u8 *target_addr, *orig_addr;
         u8 ttl, hopcount, flags;
         u8 next_hop[ETH_ALEN];
-        u32 dst_dsn, orig_dsn, lifetime;
+        u32 target_sn, orig_sn, lifetime;
 
         mhwmp_dbg("received PREP from %pM\n", PREP_IE_ORIG_ADDR(prep_elem));
 
@@ -573,8 +576,8 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
          * which corresponds with the originator of the PREQ which this PREP
          * replies
          */
-        dst_addr = PREP_IE_DST_ADDR(prep_elem);
-        if (memcmp(dst_addr, sdata->dev->dev_addr, ETH_ALEN) == 0)
+        target_addr = PREP_IE_TARGET_ADDR(prep_elem);
+        if (memcmp(target_addr, sdata->dev->dev_addr, ETH_ALEN) == 0)
                 /* destination, no forwarding required */
                 return;
 
@@ -585,7 +588,7 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
         }
 
         rcu_read_lock();
-        mpath = mesh_path_lookup(dst_addr, sdata);
+        mpath = mesh_path_lookup(target_addr, sdata);
         if (mpath)
                 spin_lock_bh(&mpath->state_lock);
         else
@@ -601,13 +604,13 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
         lifetime = PREP_IE_LIFETIME(prep_elem);
         hopcount = PREP_IE_HOPCOUNT(prep_elem) + 1;
         orig_addr = PREP_IE_ORIG_ADDR(prep_elem);
-        dst_dsn = PREP_IE_DST_DSN(prep_elem);
-        orig_dsn = PREP_IE_ORIG_DSN(prep_elem);
+        target_sn = PREP_IE_TARGET_SN(prep_elem);
+        orig_sn = PREP_IE_ORIG_SN(prep_elem);
 
         mesh_path_sel_frame_tx(MPATH_PREP, flags, orig_addr,
-                cpu_to_le32(orig_dsn), 0, dst_addr,
-                cpu_to_le32(dst_dsn), mpath->next_hop->sta.addr, hopcount, ttl,
-                cpu_to_le32(lifetime), cpu_to_le32(metric),
+                cpu_to_le32(orig_sn), 0, target_addr,
+                cpu_to_le32(target_sn), mpath->next_hop->sta.addr, hopcount,
+                ttl, cpu_to_le32(lifetime), cpu_to_le32(metric),
                 0, sdata);
         rcu_read_unlock();
 
@@ -627,10 +630,10 @@ static void hwmp_perr_frame_process(struct ieee80211_sub_if_data *sdata,
         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
         struct mesh_path *mpath;
         u8 ttl;
-        u8 *ta, *dst_addr;
-        u8 dst_flags;
-        u32 dst_dsn;
-        u16 dst_rcode;
+        u8 *ta, *target_addr;
+        u8 target_flags;
+        u32 target_sn;
+        u16 target_rcode;
 
         ta = mgmt->sa;
         ttl = PERR_IE_TTL(perr_elem);
@@ -639,24 +642,24 @@ static void hwmp_perr_frame_process(struct ieee80211_sub_if_data *sdata,
                 return;
         }
         ttl--;
-        dst_flags = PERR_IE_DST_FLAGS(perr_elem);
-        dst_addr = PERR_IE_DST_ADDR(perr_elem);
-        dst_dsn = PERR_IE_DST_DSN(perr_elem);
-        dst_rcode = PERR_IE_DST_RCODE(perr_elem);
+        target_flags = PERR_IE_TARGET_FLAGS(perr_elem);
+        target_addr = PERR_IE_TARGET_ADDR(perr_elem);
+        target_sn = PERR_IE_TARGET_SN(perr_elem);
+        target_rcode = PERR_IE_TARGET_RCODE(perr_elem);
 
         rcu_read_lock();
-        mpath = mesh_path_lookup(dst_addr, sdata);
+        mpath = mesh_path_lookup(target_addr, sdata);
         if (mpath) {
                 spin_lock_bh(&mpath->state_lock);
                 if (mpath->flags & MESH_PATH_ACTIVE &&
                     memcmp(ta, mpath->next_hop->sta.addr, ETH_ALEN) == 0 &&
-                    (!(mpath->flags & MESH_PATH_DSN_VALID) ||
-                    DSN_GT(dst_dsn, mpath->dsn))) {
+                    (!(mpath->flags & MESH_PATH_SN_VALID) ||
+                    SN_GT(target_sn, mpath->sn))) {
                         mpath->flags &= ~MESH_PATH_ACTIVE;
-                        mpath->dsn = dst_dsn;
+                        mpath->sn = target_sn;
                         spin_unlock_bh(&mpath->state_lock);
-                        mesh_path_error_tx(ttl, dst_addr, cpu_to_le32(dst_dsn),
-                                           cpu_to_le16(dst_rcode),
+                        mesh_path_error_tx(ttl, target_addr, cpu_to_le32(target_sn),
+                                           cpu_to_le16(target_rcode),
                                            sdata->dev->broadcast, sdata);
                 } else
                         spin_unlock_bh(&mpath->state_lock);
@@ -673,7 +676,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
         u8 *ta;
         u8 ttl, flags, hopcount;
         u8 *orig_addr;
-        u32 orig_dsn, metric;
+        u32 orig_sn, metric;
 
         ta = mgmt->sa;
         ttl = rann->rann_ttl;
@@ -684,7 +687,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
         ttl--;
         flags = rann->rann_flags;
         orig_addr = rann->rann_addr;
-        orig_dsn = rann->rann_seq;
+        orig_sn = rann->rann_seq;
         hopcount = rann->rann_hopcount;
         hopcount++;
         metric = rann->rann_metric;
@@ -703,14 +706,14 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
                 mesh_queue_preq(mpath,
                                 PREQ_Q_F_START | PREQ_Q_F_REFRESH);
         }
-        if (mpath->dsn < orig_dsn) {
+        if (mpath->sn < orig_sn) {
                 mesh_path_sel_frame_tx(MPATH_RANN, flags, orig_addr,
-                                       cpu_to_le32(orig_dsn),
+                                       cpu_to_le32(orig_sn),
                                        0, NULL, 0, sdata->dev->broadcast,
                                        hopcount, ttl, 0,
                                        cpu_to_le32(metric + mpath->metric),
                                        0, sdata);
-                mpath->dsn = orig_dsn;
+                mpath->sn = orig_sn;
         }
         rcu_read_unlock();
 }
@@ -823,7 +826,7 @@ void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata)
         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
         struct mesh_preq_queue *preq_node;
         struct mesh_path *mpath;
-        u8 ttl, dst_flags;
+        u8 ttl, target_flags;
         u32 lifetime;
 
         spin_lock_bh(&ifmsh->mesh_preq_queue_lock);
@@ -865,11 +868,11 @@ void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata)
 
         ifmsh->last_preq = jiffies;
 
-        if (time_after(jiffies, ifmsh->last_dsn_update +
+        if (time_after(jiffies, ifmsh->last_sn_update +
                                 net_traversal_jiffies(sdata)) ||
-            time_before(jiffies, ifmsh->last_dsn_update)) {
-                ++ifmsh->dsn;
-                sdata->u.mesh.last_dsn_update = jiffies;
+            time_before(jiffies, ifmsh->last_sn_update)) {
+                ++ifmsh->sn;
+                sdata->u.mesh.last_sn_update = jiffies;
         }
         lifetime = default_lifetime(sdata);
         ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;
@@ -880,14 +883,14 @@ void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata)
         }
 
         if (preq_node->flags & PREQ_Q_F_REFRESH)
-                dst_flags = MP_F_DO;
+                target_flags = MP_F_DO;
         else
-                dst_flags = MP_F_RF;
+                target_flags = MP_F_RF;
 
         spin_unlock_bh(&mpath->state_lock);
         mesh_path_sel_frame_tx(MPATH_PREQ, 0, sdata->dev->dev_addr,
-                        cpu_to_le32(ifmsh->dsn), dst_flags, mpath->dst,
-                        cpu_to_le32(mpath->dsn), sdata->dev->broadcast, 0,
+                        cpu_to_le32(ifmsh->sn), target_flags, mpath->dst,
+                        cpu_to_le32(mpath->sn), sdata->dev->broadcast, 0,
                         ttl, cpu_to_le32(lifetime), 0,
                         cpu_to_le32(ifmsh->preq_id++), sdata);
         mod_timer(&mpath->timer, jiffies + mpath->discovery_timeout);
@@ -914,15 +917,15 @@ int mesh_nexthop_lookup(struct sk_buff *skb,
         struct sk_buff *skb_to_free = NULL;
         struct mesh_path *mpath;
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-        u8 *dst_addr = hdr->addr3;
+        u8 *target_addr = hdr->addr3;
         int err = 0;
 
         rcu_read_lock();
-        mpath = mesh_path_lookup(dst_addr, sdata);
+        mpath = mesh_path_lookup(target_addr, sdata);
 
         if (!mpath) {
-                mesh_path_add(dst_addr, sdata);
-                mpath = mesh_path_lookup(dst_addr, sdata);
+                mesh_path_add(target_addr, sdata);
+                mpath = mesh_path_lookup(target_addr, sdata);
                 if (!mpath) {
                         sdata->u.mesh.mshstats.dropped_frames_no_route++;
                         err = -ENOSPC;
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index 5d541235ca2f..2cebdf52b7bc 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -463,10 +463,10 @@ void mesh_plink_broken(struct sta_info *sta)
                     mpath->flags & MESH_PATH_ACTIVE &&
                     !(mpath->flags & MESH_PATH_FIXED)) {
                         mpath->flags &= ~MESH_PATH_ACTIVE;
-                        ++mpath->dsn;
+                        ++mpath->sn;
                         spin_unlock_bh(&mpath->state_lock);
                         mesh_path_error_tx(MESH_TTL, mpath->dst,
-                                        cpu_to_le32(mpath->dsn),
+                                        cpu_to_le32(mpath->sn),
                                         PERR_RCODE_DEST_UNREACH,
                                         sdata->dev->broadcast, sdata);
                 } else
@@ -602,7 +602,7 @@ void mesh_path_discard_frame(struct sk_buff *skb,
 {
         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
         struct mesh_path *mpath;
-        u32 dsn = 0;
+        u32 sn = 0;
 
         if (memcmp(hdr->addr4, sdata->dev->dev_addr, ETH_ALEN) != 0) {
                 u8 *ra, *da;
@@ -611,8 +611,8 @@ void mesh_path_discard_frame(struct sk_buff *skb,
                 ra = hdr->addr1;
                 mpath = mesh_path_lookup(da, sdata);
                 if (mpath)
-                        dsn = ++mpath->dsn;
-                mesh_path_error_tx(MESH_TTL, skb->data, cpu_to_le32(dsn),
+                        sn = ++mpath->sn;
+                mesh_path_error_tx(MESH_TTL, skb->data, cpu_to_le32(sn),
                                    PERR_RCODE_NO_ROUTE, ra, sdata);
         }
 
@@ -648,7 +648,7 @@ void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop)
 {
         spin_lock_bh(&mpath->state_lock);
         mesh_path_assign_nexthop(mpath, next_hop);
-        mpath->dsn = 0xffff;
+        mpath->sn = 0xffff;
         mpath->metric = 0;
         mpath->hop_count = 0;
         mpath->exp_time = 0;