mac80211: RMC buckets are just list heads

The array of rmc_entrys is redundant since only the
list_head is used. Make this an array of list_heads
instead and save ~6k per vif at runtime :D

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 1bf03f9..649ad51 100644 (file)
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -163,7 +163,7 @@ int mesh_rmc_init(struct ieee80211_sub_if_data *sdata)
                return -ENOMEM;
        sdata->u.mesh.rmc->idx_mask = RMC_BUCKETS - 1;
        for (i = 0; i < RMC_BUCKETS; i++)
-               INIT_LIST_HEAD(&sdata->u.mesh.rmc->bucket[i].list);
+               INIT_LIST_HEAD(&sdata->u.mesh.rmc->bucket[i]);
        return 0;
 }
 
@@ -177,7 +177,7 @@ void mesh_rmc_free(struct ieee80211_sub_if_data *sdata)
                return;
 
        for (i = 0; i < RMC_BUCKETS; i++)
-               list_for_each_entry_safe(p, n, &rmc->bucket[i].list, list) {
+               list_for_each_entry_safe(p, n, &rmc->bucket[i], list) {
                        list_del(&p->list);
                        kmem_cache_free(rm_cache, p);
                }
@@ -210,7 +210,7 @@ int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
        /* Don't care about endianness since only match matters */
        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) {
+       list_for_each_entry_safe(p, n, &rmc->bucket[idx], list) {
                ++entries;
                if (time_after(jiffies, p->exp_time) ||
                                (entries == RMC_QUEUE_MAX_LEN)) {
@@ -229,7 +229,7 @@ int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
        p->seqnum = seqnum;
        p->exp_time = jiffies + RMC_TIMEOUT;
        memcpy(p->sa, sa, ETH_ALEN);
-       list_add(&p->list, &rmc->bucket[idx].list);
+       list_add(&p->list, &rmc->bucket[idx]);
        return 0;
 }
 

diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 7c9215f..84c28c6 100644 (file)
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -184,7 +184,7 @@ struct rmc_entry {
 };
 
 struct mesh_rmc {
-       struct rmc_entry bucket[RMC_BUCKETS];
+       struct list_head bucket[RMC_BUCKETS];
        u32 idx_mask;
 };