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Diffstat (limited to 'net/mac80211/mesh.c')
-rw-r--r--net/mac80211/mesh.c207
1 files changed, 113 insertions, 94 deletions
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 11cf45bce38..f7364e56f1e 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -18,8 +18,11 @@
#define PP_OFFSET 1 /* Path Selection Protocol */
#define PM_OFFSET 5 /* Path Selection Metric */
#define CC_OFFSET 9 /* Congestion Control Mode */
-#define CAPAB_OFFSET 17
-#define ACCEPT_PLINKS 0x80
+#define SP_OFFSET 13 /* Synchronization Protocol */
+#define AUTH_OFFSET 17 /* Authentication Protocol */
+#define CAPAB_OFFSET 22
+#define CAPAB_ACCEPT_PLINKS 0x80
+#define CAPAB_FORWARDING 0x10
#define TMR_RUNNING_HK 0
#define TMR_RUNNING_MP 1
@@ -47,14 +50,14 @@ static void ieee80211_mesh_housekeeping_timer(unsigned long data)
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
- ifmsh->housekeeping = true;
+ ifmsh->wrkq_flags |= MESH_WORK_HOUSEKEEPING;
if (local->quiescing) {
set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
return;
}
- queue_work(local->hw.workqueue, &ifmsh->work);
+ ieee80211_queue_work(&local->hw, &ifmsh->work);
}
/**
@@ -84,7 +87,9 @@ bool mesh_matches_local(struct ieee802_11_elems *ie, struct ieee80211_sub_if_dat
memcmp(ifmsh->mesh_id, ie->mesh_id, ie->mesh_id_len) == 0 &&
memcmp(ifmsh->mesh_pp_id, ie->mesh_config + PP_OFFSET, 4) == 0 &&
memcmp(ifmsh->mesh_pm_id, ie->mesh_config + PM_OFFSET, 4) == 0 &&
- memcmp(ifmsh->mesh_cc_id, ie->mesh_config + CC_OFFSET, 4) == 0)
+ memcmp(ifmsh->mesh_cc_id, ie->mesh_config + CC_OFFSET, 4) == 0 &&
+ memcmp(ifmsh->mesh_sp_id, ie->mesh_config + SP_OFFSET, 4) == 0 &&
+ memcmp(ifmsh->mesh_auth_id, ie->mesh_config + AUTH_OFFSET, 4) == 0)
return true;
return false;
@@ -97,7 +102,7 @@ bool mesh_matches_local(struct ieee802_11_elems *ie, struct ieee80211_sub_if_dat
*/
bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie)
{
- return (*(ie->mesh_config + CAPAB_OFFSET) & ACCEPT_PLINKS) != 0;
+ return (*(ie->mesh_config + CAPAB_OFFSET) & CAPAB_ACCEPT_PLINKS) != 0;
}
/**
@@ -123,11 +128,18 @@ void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata)
void mesh_ids_set_default(struct ieee80211_if_mesh *sta)
{
- u8 def_id[4] = {0x00, 0x0F, 0xAC, 0xff};
-
- memcpy(sta->mesh_pp_id, def_id, 4);
- memcpy(sta->mesh_pm_id, def_id, 4);
- memcpy(sta->mesh_cc_id, def_id, 4);
+ u8 oui[3] = {0x00, 0x0F, 0xAC};
+
+ memcpy(sta->mesh_pp_id, oui, sizeof(oui));
+ memcpy(sta->mesh_pm_id, oui, sizeof(oui));
+ memcpy(sta->mesh_cc_id, oui, sizeof(oui));
+ memcpy(sta->mesh_sp_id, oui, sizeof(oui));
+ memcpy(sta->mesh_auth_id, oui, sizeof(oui));
+ sta->mesh_pp_id[sizeof(oui)] = 0;
+ sta->mesh_pm_id[sizeof(oui)] = 0;
+ sta->mesh_cc_id[sizeof(oui)] = 0xff;
+ sta->mesh_sp_id[sizeof(oui)] = 0xff;
+ sta->mesh_auth_id[sizeof(oui)] = 0x0;
}
int mesh_rmc_init(struct ieee80211_sub_if_data *sdata)
@@ -245,7 +257,7 @@ void mesh_mgmt_ies_add(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
if (sdata->u.mesh.mesh_id_len)
memcpy(pos, sdata->u.mesh.mesh_id, sdata->u.mesh.mesh_id_len);
- pos = skb_put(skb, 21);
+ pos = skb_put(skb, 2 + IEEE80211_MESH_CONFIG_LEN);
*pos++ = WLAN_EID_MESH_CONFIG;
*pos++ = IEEE80211_MESH_CONFIG_LEN;
/* Version */
@@ -263,15 +275,22 @@ void mesh_mgmt_ies_add(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
memcpy(pos, sdata->u.mesh.mesh_cc_id, 4);
pos += 4;
- /* Channel precedence:
- * Not running simple channel unification protocol
- */
- memset(pos, 0x00, 4);
+ /* Synchronization protocol identifier */
+ memcpy(pos, sdata->u.mesh.mesh_sp_id, 4);
pos += 4;
+ /* Authentication Protocol identifier */
+ memcpy(pos, sdata->u.mesh.mesh_auth_id, 4);
+ pos += 4;
+
+ /* Mesh Formation Info */
+ memset(pos, 0x00, 1);
+ pos += 1;
+
/* Mesh capability */
sdata->u.mesh.accepting_plinks = mesh_plink_availables(sdata);
- *pos++ = sdata->u.mesh.accepting_plinks ? ACCEPT_PLINKS : 0x00;
+ *pos = CAPAB_FORWARDING;
+ *pos++ |= sdata->u.mesh.accepting_plinks ? CAPAB_ACCEPT_PLINKS : 0x00;
*pos++ = 0x00;
return;
@@ -320,30 +339,6 @@ struct mesh_table *mesh_table_alloc(int size_order)
return newtbl;
}
-static void __mesh_table_free(struct mesh_table *tbl)
-{
- kfree(tbl->hash_buckets);
- kfree(tbl->hashwlock);
- kfree(tbl);
-}
-
-void mesh_table_free(struct mesh_table *tbl, bool free_leafs)
-{
- struct hlist_head *mesh_hash;
- struct hlist_node *p, *q;
- int i;
-
- mesh_hash = tbl->hash_buckets;
- for (i = 0; i <= tbl->hash_mask; i++) {
- spin_lock(&tbl->hashwlock[i]);
- hlist_for_each_safe(p, q, &mesh_hash[i]) {
- tbl->free_node(p, free_leafs);
- atomic_dec(&tbl->entries);
- }
- spin_unlock(&tbl->hashwlock[i]);
- }
- __mesh_table_free(tbl);
-}
static void ieee80211_mesh_path_timer(unsigned long data)
{
@@ -357,63 +352,79 @@ static void ieee80211_mesh_path_timer(unsigned long data)
return;
}
- queue_work(local->hw.workqueue, &ifmsh->work);
+ ieee80211_queue_work(&local->hw, &ifmsh->work);
}
-struct mesh_table *mesh_table_grow(struct mesh_table *tbl)
-{
- struct mesh_table *newtbl;
- struct hlist_head *oldhash;
- struct hlist_node *p, *q;
- int i;
-
- if (atomic_read(&tbl->entries)
- < tbl->mean_chain_len * (tbl->hash_mask + 1))
- goto endgrow;
-
- newtbl = mesh_table_alloc(tbl->size_order + 1);
- if (!newtbl)
- goto endgrow;
-
- newtbl->free_node = tbl->free_node;
- newtbl->mean_chain_len = tbl->mean_chain_len;
- newtbl->copy_node = tbl->copy_node;
- atomic_set(&newtbl->entries, atomic_read(&tbl->entries));
-
- oldhash = tbl->hash_buckets;
- for (i = 0; i <= tbl->hash_mask; i++)
- hlist_for_each(p, &oldhash[i])
- if (tbl->copy_node(p, newtbl) < 0)
- goto errcopy;
-
- return newtbl;
-
-errcopy:
- for (i = 0; i <= newtbl->hash_mask; i++) {
- hlist_for_each_safe(p, q, &newtbl->hash_buckets[i])
- tbl->free_node(p, 0);
+/**
+ * ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
+ * @hdr: 802.11 frame header
+ * @fc: frame control field
+ * @meshda: destination address in the mesh
+ * @meshsa: source address address in the mesh. Same as TA, as frame is
+ * locally originated.
+ *
+ * Return the length of the 802.11 (does not include a mesh control header)
+ */
+int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc, char
+ *meshda, char *meshsa) {
+ if (is_multicast_ether_addr(meshda)) {
+ *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
+ /* DA TA SA */
+ memcpy(hdr->addr1, meshda, ETH_ALEN);
+ memcpy(hdr->addr2, meshsa, ETH_ALEN);
+ memcpy(hdr->addr3, meshsa, ETH_ALEN);
+ return 24;
+ } else {
+ *fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS |
+ IEEE80211_FCTL_TODS);
+ /* RA TA DA SA */
+ memset(hdr->addr1, 0, ETH_ALEN); /* RA is resolved later */
+ memcpy(hdr->addr2, meshsa, ETH_ALEN);
+ memcpy(hdr->addr3, meshda, ETH_ALEN);
+ memcpy(hdr->addr4, meshsa, ETH_ALEN);
+ return 30;
}
- __mesh_table_free(newtbl);
-endgrow:
- return NULL;
}
/**
* ieee80211_new_mesh_header - create a new mesh header
* @meshhdr: uninitialized mesh header
* @sdata: mesh interface to be used
+ * @addr4: addr4 of the mesh frame (1st in ae header)
+ * may be NULL
+ * @addr5: addr5 of the mesh frame (1st or 2nd in ae header)
+ * may be NULL unless addr6 is present
+ * @addr6: addr6 of the mesh frame (2nd or 3rd in ae header)
+ * may be NULL unless addr5 is present
*
* Return the header length.
*/
int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
- struct ieee80211_sub_if_data *sdata)
+ struct ieee80211_sub_if_data *sdata, char *addr4,
+ char *addr5, char *addr6)
{
- meshhdr->flags = 0;
+ int aelen = 0;
+ memset(meshhdr, 0, sizeof(meshhdr));
meshhdr->ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;
put_unaligned(cpu_to_le32(sdata->u.mesh.mesh_seqnum), &meshhdr->seqnum);
sdata->u.mesh.mesh_seqnum++;
-
- return 6;
+ if (addr4) {
+ meshhdr->flags |= MESH_FLAGS_AE_A4;
+ aelen += ETH_ALEN;
+ memcpy(meshhdr->eaddr1, addr4, ETH_ALEN);
+ }
+ if (addr5 && addr6) {
+ meshhdr->flags |= MESH_FLAGS_AE_A5_A6;
+ aelen += 2 * ETH_ALEN;
+ if (!addr4) {
+ memcpy(meshhdr->eaddr1, addr5, ETH_ALEN);
+ memcpy(meshhdr->eaddr2, addr6, ETH_ALEN);
+ } else {
+ memcpy(meshhdr->eaddr2, addr5, ETH_ALEN);
+ memcpy(meshhdr->eaddr3, addr6, ETH_ALEN);
+ }
+ }
+ return 6 + aelen;
}
static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata,
@@ -433,7 +444,6 @@ static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata,
if (free_plinks != sdata->u.mesh.accepting_plinks)
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
- ifmsh->housekeeping = false;
mod_timer(&ifmsh->housekeeping_timer,
round_jiffies(jiffies + IEEE80211_MESH_HOUSEKEEPING_INTERVAL));
}
@@ -470,10 +480,12 @@ void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct ieee80211_local *local = sdata->local;
- ifmsh->housekeeping = true;
- queue_work(local->hw.workqueue, &ifmsh->work);
+ ifmsh->wrkq_flags |= MESH_WORK_HOUSEKEEPING;
+ ieee80211_queue_work(&local->hw, &ifmsh->work);
+ sdata->vif.bss_conf.beacon_int = MESH_DEFAULT_BEACON_INTERVAL;
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON |
- BSS_CHANGED_BEACON_ENABLED);
+ BSS_CHANGED_BEACON_ENABLED |
+ BSS_CHANGED_BEACON_INT);
}
void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
@@ -568,7 +580,7 @@ static void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
ifmsh = &sdata->u.mesh;
- rx_status = (struct ieee80211_rx_status *) skb->cb;
+ rx_status = IEEE80211_SKB_RXCB(skb);
mgmt = (struct ieee80211_mgmt *) skb->data;
stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
@@ -597,7 +609,7 @@ static void ieee80211_mesh_work(struct work_struct *work)
if (!netif_running(sdata->dev))
return;
- if (local->sw_scanning || local->hw_scanning)
+ if (local->scanning)
return;
while ((skb = skb_dequeue(&ifmsh->skb_queue)))
@@ -608,7 +620,13 @@ static void ieee80211_mesh_work(struct work_struct *work)
ifmsh->last_preq + msecs_to_jiffies(ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval)))
mesh_path_start_discovery(sdata);
- if (ifmsh->housekeeping)
+ if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE, &ifmsh->wrkq_flags))
+ mesh_mpath_table_grow();
+
+ if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE, &ifmsh->wrkq_flags))
+ mesh_mpp_table_grow();
+
+ if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags))
ieee80211_mesh_housekeeping(sdata, ifmsh);
}
@@ -619,7 +637,7 @@ void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local)
rcu_read_lock();
list_for_each_entry_rcu(sdata, &local->interfaces, list)
if (ieee80211_vif_is_mesh(&sdata->vif))
- queue_work(local->hw.workqueue, &sdata->u.mesh.work);
+ ieee80211_queue_work(&local->hw, &sdata->u.mesh.work);
rcu_read_unlock();
}
@@ -671,8 +689,7 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
}
ieee80211_rx_result
-ieee80211_mesh_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
- struct ieee80211_rx_status *rx_status)
+ieee80211_mesh_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
@@ -686,12 +703,14 @@ ieee80211_mesh_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
fc = le16_to_cpu(mgmt->frame_control);
switch (fc & IEEE80211_FCTL_STYPE) {
+ case IEEE80211_STYPE_ACTION:
+ if (skb->len < IEEE80211_MIN_ACTION_SIZE)
+ return RX_DROP_MONITOR;
+ /* fall through */
case IEEE80211_STYPE_PROBE_RESP:
case IEEE80211_STYPE_BEACON:
- case IEEE80211_STYPE_ACTION:
- memcpy(skb->cb, rx_status, sizeof(*rx_status));
skb_queue_tail(&ifmsh->skb_queue, skb);
- queue_work(local->hw.workqueue, &ifmsh->work);
+ ieee80211_queue_work(&local->hw, &ifmsh->work);
return RX_QUEUED;
}