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-rw-r--r--net/mac80211/mesh.c650
1 files changed, 650 insertions, 0 deletions
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
new file mode 100644
index 00000000..29e9980c
--- /dev/null
+++ b/net/mac80211/mesh.c
@@ -0,0 +1,650 @@
+/*
+ * Copyright (c) 2008, 2009 open80211s Ltd.
+ * Authors: Luis Carlos Cobo <luisca@cozybit.com>
+ * Javier Cardona <javier@cozybit.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/slab.h>
+#include <asm/unaligned.h>
+#include "ieee80211_i.h"
+#include "mesh.h"
+
+#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
+#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
+#define IEEE80211_MESH_RANN_INTERVAL (1 * HZ)
+
+#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;
+
+void ieee80211s_init(void)
+{
+ mesh_pathtbl_init();
+ mesh_allocated = 1;
+ rm_cache = kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry),
+ 0, 0, NULL);
+}
+
+void ieee80211s_stop(void)
+{
+ mesh_pathtbl_unregister();
+ kmem_cache_destroy(rm_cache);
+}
+
+static void ieee80211_mesh_housekeeping_timer(unsigned long data)
+{
+ struct ieee80211_sub_if_data *sdata = (void *) data;
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+
+ set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
+
+ if (local->quiescing) {
+ set_bit(TMR_RUNNING_HK, &ifmsh->timers_running);
+ return;
+ }
+
+ ieee80211_queue_work(&local->hw, &sdata->work);
+}
+
+/**
+ * mesh_matches_local - check if the config of a mesh point matches ours
+ *
+ * @ie: information elements of a management frame from the mesh peer
+ * @sdata: local mesh subif
+ *
+ * This function checks if the mesh configuration of a mesh point matches the
+ * local mesh configuration, i.e. if both nodes belong to the same mesh network.
+ */
+bool mesh_matches_local(struct ieee802_11_elems *ie, struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+
+ /*
+ * As support for each feature is added, check for matching
+ * - On mesh config capabilities
+ * - Power Save Support En
+ * - Sync support enabled
+ * - Sync support active
+ * - Sync support required from peer
+ * - MDA enabled
+ * - Power management control on fc
+ */
+ if (ifmsh->mesh_id_len == ie->mesh_id_len &&
+ memcmp(ifmsh->mesh_id, ie->mesh_id, ie->mesh_id_len) == 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;
+}
+
+/**
+ * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links
+ *
+ * @ie: information elements of a management frame from the mesh peer
+ */
+bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie)
+{
+ return (ie->mesh_config->meshconf_cap &
+ MESHCONF_CAPAB_ACCEPT_PLINKS) != 0;
+}
+
+/**
+ * mesh_accept_plinks_update: update accepting_plink in local mesh beacons
+ *
+ * @sdata: mesh interface in which mesh beacons are going to be updated
+ */
+void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata)
+{
+ bool free_plinks;
+
+ /* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0,
+ * the mesh interface might be able to establish plinks with peers that
+ * are already on the table but are not on PLINK_ESTAB state. However,
+ * in general the mesh interface is not accepting peer link requests
+ * from new peers, and that must be reflected in the beacon
+ */
+ free_plinks = mesh_plink_availables(sdata);
+
+ if (free_plinks != sdata->u.mesh.accepting_plinks)
+ ieee80211_mesh_housekeeping_timer((unsigned long) sdata);
+}
+
+int mesh_rmc_init(struct ieee80211_sub_if_data *sdata)
+{
+ int i;
+
+ sdata->u.mesh.rmc = kmalloc(sizeof(struct mesh_rmc), GFP_KERNEL);
+ if (!sdata->u.mesh.rmc)
+ 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);
+ return 0;
+}
+
+void mesh_rmc_free(struct ieee80211_sub_if_data *sdata)
+{
+ struct mesh_rmc *rmc = sdata->u.mesh.rmc;
+ struct rmc_entry *p, *n;
+ int i;
+
+ if (!sdata->u.mesh.rmc)
+ return;
+
+ for (i = 0; i < RMC_BUCKETS; i++)
+ list_for_each_entry_safe(p, n, &rmc->bucket[i].list, list) {
+ list_del(&p->list);
+ kmem_cache_free(rm_cache, p);
+ }
+
+ kfree(rmc);
+ sdata->u.mesh.rmc = NULL;
+}
+
+/**
+ * mesh_rmc_check - Check frame in recent multicast cache and add if absent.
+ *
+ * @sa: source address
+ * @mesh_hdr: mesh_header
+ *
+ * Returns: 0 if the frame is not in the cache, nonzero otherwise.
+ *
+ * Checks using the source address and the mesh sequence number if we have
+ * received this frame lately. If the frame is not in the cache, it is added to
+ * it.
+ */
+int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
+ struct ieee80211_sub_if_data *sdata)
+{
+ struct mesh_rmc *rmc = sdata->u.mesh.rmc;
+ u32 seqnum = 0;
+ int entries = 0;
+ u8 idx;
+ struct rmc_entry *p, *n;
+
+ /* 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) {
+ ++entries;
+ if (time_after(jiffies, p->exp_time) ||
+ (entries == RMC_QUEUE_MAX_LEN)) {
+ list_del(&p->list);
+ kmem_cache_free(rm_cache, p);
+ --entries;
+ } else if ((seqnum == p->seqnum) &&
+ (memcmp(sa, p->sa, ETH_ALEN) == 0))
+ return -1;
+ }
+
+ p = kmem_cache_alloc(rm_cache, GFP_ATOMIC);
+ if (!p) {
+ printk(KERN_DEBUG "o11s: could not allocate RMC entry\n");
+ return 0;
+ }
+ p->seqnum = seqnum;
+ p->exp_time = jiffies + RMC_TIMEOUT;
+ memcpy(p->sa, sa, ETH_ALEN);
+ list_add(&p->list, &rmc->bucket[idx].list);
+ return 0;
+}
+
+void mesh_mgmt_ies_add(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_local *local = sdata->local;
+ 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;
+ if (len > 8)
+ len = 8;
+ pos = skb_put(skb, len + 2);
+ *pos++ = WLAN_EID_SUPP_RATES;
+ *pos++ = len;
+ for (i = 0; i < len; i++) {
+ rate = sband->bitrates[i].bitrate;
+ *pos++ = (u8) (rate / 5);
+ }
+
+ if (sband->n_bitrates > len) {
+ pos = skb_put(skb, sband->n_bitrates - len + 2);
+ *pos++ = WLAN_EID_EXT_SUPP_RATES;
+ *pos++ = sband->n_bitrates - len;
+ for (i = len; i < sband->n_bitrates; i++) {
+ rate = sband->bitrates[i].bitrate;
+ *pos++ = (u8) (rate / 5);
+ }
+ }
+
+ 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 + sizeof(struct ieee80211_meshconf_ie));
+ *pos++ = WLAN_EID_MESH_CONFIG;
+ *pos++ = sizeof(struct ieee80211_meshconf_ie);
+
+ /* Active path selection protocol ID */
+ *pos++ = sdata->u.mesh.mesh_pp_id;
+
+ /* Active path selection metric ID */
+ *pos++ = sdata->u.mesh.mesh_pm_id;
+
+ /* Congestion control mode identifier */
+ *pos++ = sdata->u.mesh.mesh_cc_id;
+
+ /* Synchronization protocol identifier */
+ *pos++ = sdata->u.mesh.mesh_sp_id;
+
+ /* Authentication Protocol identifier */
+ *pos++ = sdata->u.mesh.mesh_auth_id;
+
+ /* 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 = MESHCONF_CAPAB_FORWARDING;
+ *pos++ |= sdata->u.mesh.accepting_plinks ?
+ MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
+ *pos++ = 0x00;
+
+ if (sdata->u.mesh.ie) {
+ int len = sdata->u.mesh.ie_len;
+ const u8 *data = sdata->u.mesh.ie;
+ if (skb_tailroom(skb) > len)
+ memcpy(skb_put(skb, len), data, len);
+ }
+}
+
+
+static void ieee80211_mesh_path_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;
+
+ if (local->quiescing) {
+ set_bit(TMR_RUNNING_MP, &ifmsh->timers_running);
+ return;
+ }
+
+ ieee80211_queue_work(&local->hw, &sdata->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, &sdata->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
+ * @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,
+ const u8 *meshda, const u8 *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;
+ }
+}
+
+/**
+ * ieee80211_new_mesh_header - create a new mesh header
+ * @meshhdr: uninitialized mesh header
+ * @sdata: mesh interface to be used
+ * @addr4or5: 1st address in the ae header, which may correspond to address 4
+ * (if addr6 is NULL) or address 5 (if addr6 is present). It may
+ * be NULL.
+ * @addr6: 2nd address in the ae header, which corresponds to addr6 of the
+ * mesh frame
+ *
+ * Return the header length.
+ */
+int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
+ struct ieee80211_sub_if_data *sdata, char *addr4or5,
+ char *addr6)
+{
+ int aelen = 0;
+ BUG_ON(!addr4or5 && addr6);
+ 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++;
+ if (addr4or5 && !addr6) {
+ meshhdr->flags |= MESH_FLAGS_AE_A4;
+ aelen += ETH_ALEN;
+ memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
+ } else if (addr4or5 && addr6) {
+ meshhdr->flags |= MESH_FLAGS_AE_A5_A6;
+ aelen += 2 * ETH_ALEN;
+ memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
+ memcpy(meshhdr->eaddr2, addr6, ETH_ALEN);
+ }
+ return 6 + aelen;
+}
+
+static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_if_mesh *ifmsh)
+{
+ bool free_plinks;
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+ printk(KERN_DEBUG "%s: running mesh housekeeping\n",
+ sdata->name);
+#endif
+
+ ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
+ mesh_path_expire(sdata);
+
+ free_plinks = mesh_plink_availables(sdata);
+ if (free_plinks != sdata->u.mesh.accepting_plinks)
+ ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
+
+ mod_timer(&ifmsh->housekeeping_timer,
+ 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)
+{
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+
+ /* use atomic bitops in case both timers fire at the same time */
+
+ if (del_timer_sync(&ifmsh->housekeeping_timer))
+ 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)
+{
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+
+ if (test_and_clear_bit(TMR_RUNNING_HK, &ifmsh->timers_running))
+ 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
+
+void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+ struct ieee80211_local *local = sdata->local;
+
+ local->fif_other_bss++;
+ /* mesh ifaces must set allmulti to forward mcast traffic */
+ atomic_inc(&local->iff_allmultis);
+ ieee80211_configure_filter(local);
+
+ ifmsh->mesh_cc_id = 0; /* Disabled */
+ ifmsh->mesh_sp_id = 0; /* Neighbor Offset */
+ ifmsh->mesh_auth_id = 0; /* Disabled */
+ set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
+ ieee80211_mesh_root_setup(ifmsh);
+ ieee80211_queue_work(&local->hw, &sdata->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_INT);
+}
+
+void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+
+ ifmsh->mesh_id_len = 0;
+ ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
+ sta_info_flush(local, NULL);
+
+ 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
+ * but will not rearm the timer again because it checks
+ * whether the interface is running, which, at this point,
+ * it no longer is.
+ */
+ cancel_work_sync(&sdata->work);
+
+ local->fif_other_bss--;
+ atomic_dec(&local->iff_allmultis);
+ ieee80211_configure_filter(local);
+}
+
+static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
+ u16 stype,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee802_11_elems elems;
+ struct ieee80211_channel *channel;
+ u32 supp_rates = 0;
+ size_t baselen;
+ int freq;
+ enum ieee80211_band band = rx_status->band;
+
+ /* ignore ProbeResp to foreign address */
+ if (stype == IEEE80211_STYPE_PROBE_RESP &&
+ compare_ether_addr(mgmt->da, sdata->vif.addr))
+ return;
+
+ baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
+ if (baselen > len)
+ return;
+
+ ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
+ &elems);
+
+ /* ignore beacons from secure mesh peers if our security is off */
+ if (elems.rsn_len && sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE)
+ return;
+
+ if (elems.ds_params && elems.ds_params_len == 1)
+ freq = ieee80211_channel_to_frequency(elems.ds_params[0], band);
+ else
+ freq = rx_status->freq;
+
+ channel = ieee80211_get_channel(local->hw.wiphy, freq);
+
+ if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
+ return;
+
+ if (elems.mesh_id && elems.mesh_config &&
+ mesh_matches_local(&elems, sdata)) {
+ supp_rates = ieee80211_sta_get_rates(local, &elems, band);
+ mesh_neighbour_update(mgmt->sa, supp_rates, sdata, &elems);
+ }
+}
+
+static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status)
+{
+ switch (mgmt->u.action.category) {
+ case WLAN_CATEGORY_MESH_ACTION:
+ mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
+ break;
+ case WLAN_CATEGORY_MESH_PATH_SEL:
+ mesh_rx_path_sel_frame(sdata, mgmt, len);
+ break;
+ }
+}
+
+void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb)
+{
+ struct ieee80211_rx_status *rx_status;
+ struct ieee80211_mgmt *mgmt;
+ u16 stype;
+
+ rx_status = IEEE80211_SKB_RXCB(skb);
+ mgmt = (struct ieee80211_mgmt *) skb->data;
+ stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
+
+ switch (stype) {
+ case IEEE80211_STYPE_PROBE_RESP:
+ case IEEE80211_STYPE_BEACON:
+ ieee80211_mesh_rx_bcn_presp(sdata, stype, mgmt, skb->len,
+ rx_status);
+ break;
+ case IEEE80211_STYPE_ACTION:
+ ieee80211_mesh_rx_mgmt_action(sdata, mgmt, skb->len, rx_status);
+ break;
+ }
+}
+
+void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+
+ if (ifmsh->preq_queue_len &&
+ time_after(jiffies,
+ ifmsh->last_preq + msecs_to_jiffies(ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval)))
+ mesh_path_start_discovery(sdata);
+
+ 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_MPP_TABLE, &ifmsh->wrkq_flags))
+ mesh_mpp_table_grow();
+
+ 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)
+{
+ struct ieee80211_sub_if_data *sdata;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list)
+ if (ieee80211_vif_is_mesh(&sdata->vif))
+ ieee80211_queue_work(&local->hw, &sdata->work);
+ rcu_read_unlock();
+}
+
+void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+
+ setup_timer(&ifmsh->housekeeping_timer,
+ ieee80211_mesh_housekeeping_timer,
+ (unsigned long) sdata);
+
+ ifmsh->accepting_plinks = true;
+ ifmsh->preq_id = 0;
+ ifmsh->sn = 0;
+ atomic_set(&ifmsh->mpaths, 0);
+ mesh_rmc_init(sdata);
+ ifmsh->last_preq = jiffies;
+ /* Allocate all mesh structures when creating the first mesh interface. */
+ if (!mesh_allocated)
+ ieee80211s_init();
+ 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);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 09:31:27 +0000