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-rw-r--r--net/mac80211/mesh.c153
1 files changed, 99 insertions, 54 deletions
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index f7364e56f1ee..c0fe46493f71 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2008 open80211s Ltd.
+ * Copyright (c) 2008, 2009 open80211s Ltd.
* Authors: Luis Carlos Cobo <luisca@cozybit.com>
* Javier Cardona <javier@cozybit.com>
*
@@ -14,18 +14,14 @@
#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
+#define IEEE80211_MESH_RANN_INTERVAL (1 * HZ)
-#define PP_OFFSET 1 /* Path Selection Protocol */
-#define PM_OFFSET 5 /* Path Selection Metric */
-#define CC_OFFSET 9 /* Congestion Control Mode */
-#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 MESHCONF_CAPAB_ACCEPT_PLINKS 0x01
+#define MESHCONF_CAPAB_FORWARDING 0x08
#define TMR_RUNNING_HK 0
#define TMR_RUNNING_MP 1
+#define TMR_RUNNING_MPR 2
int mesh_allocated;
static struct kmem_cache *rm_cache;
@@ -50,7 +46,7 @@ static void ieee80211_mesh_housekeeping_timer(unsigned long data)
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
- ifmsh->wrkq_flags |= MESH_WORK_HOUSEKEEPING;
+ set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
if (local->quiescing) {
set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
@@ -85,11 +81,11 @@ bool mesh_matches_local(struct ieee802_11_elems *ie, struct ieee80211_sub_if_dat
*/
if (ifmsh->mesh_id_len == ie->mesh_id_len &&
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_sp_id, ie->mesh_config + SP_OFFSET, 4) == 0 &&
- memcmp(ifmsh->mesh_auth_id, ie->mesh_config + AUTH_OFFSET, 4) == 0)
+ (ifmsh->mesh_pp_id == ie->mesh_config->meshconf_psel) &&
+ (ifmsh->mesh_pm_id == ie->mesh_config->meshconf_pmetric) &&
+ (ifmsh->mesh_cc_id == ie->mesh_config->meshconf_congest) &&
+ (ifmsh->mesh_sp_id == ie->mesh_config->meshconf_synch) &&
+ (ifmsh->mesh_auth_id == ie->mesh_config->meshconf_auth))
return true;
return false;
@@ -102,7 +98,8 @@ 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) & CAPAB_ACCEPT_PLINKS) != 0;
+ return (ie->mesh_config->meshconf_cap &
+ MESHCONF_CAPAB_ACCEPT_PLINKS) != 0;
}
/**
@@ -128,18 +125,11 @@ void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata)
void mesh_ids_set_default(struct ieee80211_if_mesh *sta)
{
- 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;
+ sta->mesh_pp_id = 0; /* HWMP */
+ sta->mesh_pm_id = 0; /* Airtime */
+ sta->mesh_cc_id = 0; /* Disabled */
+ sta->mesh_sp_id = 0; /* Neighbor Offset */
+ sta->mesh_auth_id = 0; /* Disabled */
}
int mesh_rmc_init(struct ieee80211_sub_if_data *sdata)
@@ -205,8 +195,8 @@ int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
list_del(&p->list);
kmem_cache_free(rm_cache, p);
--entries;
- } else if ((seqnum == p->seqnum)
- && (memcmp(sa, p->sa, ETH_ALEN) == 0))
+ } else if ((seqnum == p->seqnum) &&
+ (memcmp(sa, p->sa, ETH_ALEN) == 0))
return -1;
}
@@ -228,6 +218,7 @@ void mesh_mgmt_ies_add(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
struct ieee80211_supported_band *sband;
u8 *pos;
int len, i, rate;
+ u8 neighbors;
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
len = sband->n_bitrates;
@@ -251,46 +242,49 @@ void mesh_mgmt_ies_add(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
}
}
+ if (sband->band == IEEE80211_BAND_2GHZ) {
+ pos = skb_put(skb, 2 + 1);
+ *pos++ = WLAN_EID_DS_PARAMS;
+ *pos++ = 1;
+ *pos++ = ieee80211_frequency_to_channel(local->hw.conf.channel->center_freq);
+ }
+
pos = skb_put(skb, 2 + sdata->u.mesh.mesh_id_len);
*pos++ = WLAN_EID_MESH_ID;
*pos++ = sdata->u.mesh.mesh_id_len;
if (sdata->u.mesh.mesh_id_len)
memcpy(pos, sdata->u.mesh.mesh_id, sdata->u.mesh.mesh_id_len);
- pos = skb_put(skb, 2 + IEEE80211_MESH_CONFIG_LEN);
+ pos = skb_put(skb, 2 + sizeof(struct ieee80211_meshconf_ie));
*pos++ = WLAN_EID_MESH_CONFIG;
- *pos++ = IEEE80211_MESH_CONFIG_LEN;
- /* Version */
- *pos++ = 1;
+ *pos++ = sizeof(struct ieee80211_meshconf_ie);
/* Active path selection protocol ID */
- memcpy(pos, sdata->u.mesh.mesh_pp_id, 4);
- pos += 4;
+ *pos++ = sdata->u.mesh.mesh_pp_id;
/* Active path selection metric ID */
- memcpy(pos, sdata->u.mesh.mesh_pm_id, 4);
- pos += 4;
+ *pos++ = sdata->u.mesh.mesh_pm_id;
/* Congestion control mode identifier */
- memcpy(pos, sdata->u.mesh.mesh_cc_id, 4);
- pos += 4;
+ *pos++ = sdata->u.mesh.mesh_cc_id;
/* Synchronization protocol identifier */
- memcpy(pos, sdata->u.mesh.mesh_sp_id, 4);
- pos += 4;
+ *pos++ = sdata->u.mesh.mesh_sp_id;
/* Authentication Protocol identifier */
- memcpy(pos, sdata->u.mesh.mesh_auth_id, 4);
- pos += 4;
+ *pos++ = sdata->u.mesh.mesh_auth_id;
- /* Mesh Formation Info */
- memset(pos, 0x00, 1);
- pos += 1;
+ /* Mesh Formation Info - number of neighbors */
+ neighbors = atomic_read(&sdata->u.mesh.mshstats.estab_plinks);
+ /* Number of neighbor mesh STAs or 15 whichever is smaller */
+ neighbors = (neighbors > 15) ? 15 : neighbors;
+ *pos++ = neighbors << 1;
/* Mesh capability */
sdata->u.mesh.accepting_plinks = mesh_plink_availables(sdata);
- *pos = CAPAB_FORWARDING;
- *pos++ |= sdata->u.mesh.accepting_plinks ? CAPAB_ACCEPT_PLINKS : 0x00;
+ *pos = MESHCONF_CAPAB_FORWARDING;
+ *pos++ |= sdata->u.mesh.accepting_plinks ?
+ MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
*pos++ = 0x00;
return;
@@ -355,6 +349,34 @@ static void ieee80211_mesh_path_timer(unsigned long data)
ieee80211_queue_work(&local->hw, &ifmsh->work);
}
+static void ieee80211_mesh_path_root_timer(unsigned long data)
+{
+ struct ieee80211_sub_if_data *sdata =
+ (struct ieee80211_sub_if_data *) data;
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+ struct ieee80211_local *local = sdata->local;
+
+ set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
+
+ if (local->quiescing) {
+ set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running);
+ return;
+ }
+
+ ieee80211_queue_work(&local->hw, &ifmsh->work);
+}
+
+void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh)
+{
+ if (ifmsh->mshcfg.dot11MeshHWMPRootMode)
+ set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
+ else {
+ clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
+ /* stop running timer */
+ del_timer_sync(&ifmsh->mesh_path_root_timer);
+ }
+}
+
/**
* ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
* @hdr: 802.11 frame header
@@ -365,8 +387,9 @@ static void ieee80211_mesh_path_timer(unsigned long data)
*
* 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) {
+int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
+ const u8 *meshda, const u8 *meshsa)
+{
if (is_multicast_ether_addr(meshda)) {
*fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
/* DA TA SA */
@@ -448,6 +471,15 @@ static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata,
round_jiffies(jiffies + IEEE80211_MESH_HOUSEKEEPING_INTERVAL));
}
+static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+
+ mesh_path_tx_root_frame(sdata);
+ mod_timer(&ifmsh->mesh_path_root_timer,
+ round_jiffies(jiffies + IEEE80211_MESH_RANN_INTERVAL));
+}
+
#ifdef CONFIG_PM
void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata)
{
@@ -462,6 +494,8 @@ void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata)
set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
if (del_timer_sync(&ifmsh->mesh_path_timer))
set_bit(TMR_RUNNING_MP, &ifmsh->timers_running);
+ if (del_timer_sync(&ifmsh->mesh_path_root_timer))
+ set_bit(TMR_RUNNING_MPR, &ifmsh->timers_running);
}
void ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata)
@@ -472,6 +506,9 @@ void ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata)
add_timer(&ifmsh->housekeeping_timer);
if (test_and_clear_bit(TMR_RUNNING_MP, &ifmsh->timers_running))
add_timer(&ifmsh->mesh_path_timer);
+ if (test_and_clear_bit(TMR_RUNNING_MPR, &ifmsh->timers_running))
+ add_timer(&ifmsh->mesh_path_root_timer);
+ ieee80211_mesh_root_setup(ifmsh);
}
#endif
@@ -480,7 +517,8 @@ 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->wrkq_flags |= MESH_WORK_HOUSEKEEPING;
+ set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
+ ieee80211_mesh_root_setup(ifmsh);
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 |
@@ -491,6 +529,7 @@ void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
{
del_timer_sync(&sdata->u.mesh.housekeeping_timer);
+ del_timer_sync(&sdata->u.mesh.mesh_path_root_timer);
/*
* If the timer fired while we waited for it, it will have
* requeued the work. Now the work will be running again
@@ -561,7 +600,7 @@ static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
struct ieee80211_rx_status *rx_status)
{
switch (mgmt->u.action.category) {
- case PLINK_CATEGORY:
+ case MESH_PLINK_CATEGORY:
mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
break;
case MESH_PATH_SEL_CATEGORY:
@@ -628,6 +667,9 @@ static void ieee80211_mesh_work(struct work_struct *work)
if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags))
ieee80211_mesh_housekeeping(sdata, ifmsh);
+
+ if (test_and_clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags))
+ ieee80211_mesh_rootpath(sdata);
}
void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local)
@@ -673,7 +715,7 @@ 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;
@@ -684,6 +726,9 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
setup_timer(&ifmsh->mesh_path_timer,
ieee80211_mesh_path_timer,
(unsigned long) sdata);
+ setup_timer(&ifmsh->mesh_path_root_timer,
+ ieee80211_mesh_path_root_timer,
+ (unsigned long) sdata);
INIT_LIST_HEAD(&ifmsh->preq_queue.list);
spin_lock_init(&ifmsh->mesh_preq_queue_lock);
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.