doc: doc maintainers
[pandora-kernel.git] / net / mac80211 / mesh_hwmp.c
index d8530fe..af0cd1e 100644 (file)
@@ -9,8 +9,6 @@
 
 #include "mesh.h"
 
-#define IEEE80211_FC(type, stype) cpu_to_le16(type | stype)
-
 #define TEST_FRAME_LEN 8192
 #define MAX_METRIC     0xffffffff
 #define ARITH_SHIFT    8
 /* Reply and forward */
 #define MP_F_RF        0x2
 
+static inline u32 u32_field_get(u8 *preq_elem, int offset, bool ae)
+{
+       if (ae)
+               offset += 6;
+       return le32_to_cpu(get_unaligned((__le32 *) (preq_elem + offset)));
+}
+
 /* HWMP IE processing macros */
-#define AE_F   (1<<6)
-#define AE_F_SET(x) (*x & AE_F)
-#define PREQ_IE_FLAGS(x) (*(x))
-#define PREQ_IE_HOPCOUNT(x) (*(x + 1))
-#define PREQ_IE_TTL(x) (*(x + 2))
-#define PREQ_IE_PREQ_ID(x) le32_to_cpu(*((u32 *) (x + 3)))
-#define PREQ_IE_ORIG_ADDR(x) (x + 7)
-#define PREQ_IE_ORIG_DSN(x) le32_to_cpu(*((u32 *) (x + 13)))
-#define PREQ_IE_LIFETIME(x) le32_to_cpu(*((u32 *) \
-                       (AE_F_SET(x) ? x + 23 : x + 17)))
-#define PREQ_IE_METRIC(x) le32_to_cpu(*((u32 *) \
-                       (AE_F_SET(x) ? x + 27 : x + 21)))
-#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) le32_to_cpu(*((u32 *) \
-                       (AE_F_SET(x) ? x + 39 : x + 33)))
-
-
-#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) le32_to_cpu(*((u32 *) (x + 9)))
-#define PREP_IE_LIFETIME(x) le32_to_cpu(*((u32 *) \
-                       (AE_F_SET(x) ? x + 19 : x + 13)))
-#define PREP_IE_METRIC(x) le32_to_cpu(*((u32 *) \
-                       (AE_F_SET(x) ? x + 23 : x + 17)))
-#define PREP_IE_DST_ADDR(x) (AE_F_SET(x) ? x + 27 : x + 21)
-#define PREP_IE_DST_DSN(x) le32_to_cpu(*((u32 *) \
-                       (AE_F_SET(x) ? x + 33 : x + 27)))
-
-#define PERR_IE_DST_ADDR(x) (x + 2)
-#define PERR_IE_DST_DSN(x) le32_to_cpu(*((u32 *) (x + 8)))
+#define AE_F                   (1<<6)
+#define AE_F_SET(x)            (*x & AE_F)
+#define PREQ_IE_FLAGS(x)       (*(x))
+#define PREQ_IE_HOPCOUNT(x)    (*(x + 1))
+#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_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 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_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 PERR_IE_DST_ADDR(x)    (x + 2)
+#define PERR_IE_DST_DSN(x)     u32_field_get(x, 8, 0);
 
 #define TU_TO_EXP_TIME(x) (jiffies + msecs_to_jiffies(x * 1024 / 1000))
 #define MSEC_TO_TU(x) (x*1000/1024)
@@ -121,7 +120,7 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
                *pos++ = WLAN_EID_PREP;
                break;
        default:
-               kfree(skb);
+               kfree_skb(skb);
                return -ENOTSUPP;
                break;
        }
@@ -449,9 +448,9 @@ static void hwmp_preq_frame_process(struct net_device *dev,
                ttl = ifsta->mshcfg.dot11MeshTTL;
                if (ttl != 0)
                        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,
-                               __cpu_to_le32(lifetime), __cpu_to_le32(metric),
+                               cpu_to_le32(dst_dsn), 0, orig_addr,
+                               cpu_to_le32(orig_dsn), mgmt->sa, 0, ttl,
+                               cpu_to_le32(lifetime), cpu_to_le32(metric),
                                0, dev);
                else
                        ifsta->mshstats.dropped_frames_ttl++;
@@ -472,10 +471,10 @@ static void hwmp_preq_frame_process(struct net_device *dev,
                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), dev->broadcast,
-                               hopcount, ttl, __cpu_to_le32(lifetime),
-                               __cpu_to_le32(metric), __cpu_to_le32(preq_id),
+                               cpu_to_le32(orig_dsn), dst_flags, dst_addr,
+                               cpu_to_le32(dst_dsn), dev->broadcast,
+                               hopcount, ttl, cpu_to_le32(lifetime),
+                               cpu_to_le32(metric), cpu_to_le32(preq_id),
                                dev);
                ifsta->mshstats.fwded_frames++;
        }
@@ -531,9 +530,9 @@ static void hwmp_prep_frame_process(struct net_device *dev,
        orig_dsn = PREP_IE_ORIG_DSN(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->addr, hopcount, ttl,
-               __cpu_to_le32(lifetime), __cpu_to_le32(metric),
+               cpu_to_le32(orig_dsn), 0, dst_addr,
+               cpu_to_le32(dst_dsn), mpath->next_hop->addr, hopcount, ttl,
+               cpu_to_le32(lifetime), cpu_to_le32(metric),
                0, dev);
        rcu_read_unlock();
        sdata->u.sta.mshstats.fwded_frames++;
@@ -566,8 +565,8 @@ static void hwmp_perr_frame_process(struct net_device *dev,
                        mpath->flags &= ~MESH_PATH_ACTIVE;
                        mpath->dsn = dst_dsn;
                        spin_unlock_bh(&mpath->state_lock);
-                       mesh_path_error_tx(dst_addr, dst_dsn, dev->broadcast,
-                                       dev);
+                       mesh_path_error_tx(dst_addr, cpu_to_le32(dst_dsn),
+                                          dev->broadcast, dev);
                } else
                        spin_unlock_bh(&mpath->state_lock);
        }
@@ -745,10 +744,10 @@ void mesh_path_start_discovery(struct net_device *dev)
 
        spin_unlock_bh(&mpath->state_lock);
        mesh_path_sel_frame_tx(MPATH_PREQ, 0, dev->dev_addr,
-                       __cpu_to_le32(ifsta->dsn), dst_flags, mpath->dst,
-                       __cpu_to_le32(mpath->dsn), dev->broadcast, 0,
-                       ttl, __cpu_to_le32(lifetime), 0,
-                       __cpu_to_le32(ifsta->preq_id++), dev);
+                       cpu_to_le32(ifsta->dsn), dst_flags, mpath->dst,
+                       cpu_to_le32(mpath->dsn), dev->broadcast, 0,
+                       ttl, cpu_to_le32(lifetime), 0,
+                       cpu_to_le32(ifsta->preq_id++), dev);
        mod_timer(&mpath->timer, jiffies + mpath->discovery_timeout);
 
 enddiscovery:
@@ -828,7 +827,6 @@ void mesh_path_timer(unsigned long data)
 {
        struct ieee80211_sub_if_data *sdata;
        struct mesh_path *mpath;
-       bool delete = false;
 
        rcu_read_lock();
        mpath = (struct mesh_path *) data;
@@ -837,10 +835,7 @@ void mesh_path_timer(unsigned long data)
                goto endmpathtimer;
        spin_lock_bh(&mpath->state_lock);
        sdata = IEEE80211_DEV_TO_SUB_IF(mpath->dev);
-       if (mpath->flags & MESH_PATH_DELETE) {
-               mpath->flags = 0;
-               delete = true;
-       } else if (mpath->flags & MESH_PATH_RESOLVED ||
+       if (mpath->flags & MESH_PATH_RESOLVED ||
                        (!(mpath->flags & MESH_PATH_RESOLVING)))
                mpath->flags &= ~(MESH_PATH_RESOLVING | MESH_PATH_RESOLVED);
        else if (mpath->discovery_retries < max_preq_retries(sdata)) {
@@ -856,6 +851,4 @@ void mesh_path_timer(unsigned long data)
        spin_unlock_bh(&mpath->state_lock);
 endmpathtimer:
        rcu_read_unlock();
-       if (delete)
-               mesh_path_del(mpath->dst, mpath->dev, false);
 }