*pos++ = csa->settings.count;
*pos++ = WLAN_EID_CHAN_SWITCH_PARAM;
*pos++ = 6;
- if (ifmsh->chsw_init) {
+ if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) {
*pos++ = ifmsh->mshcfg.dot11MeshTTL;
*pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
} else {
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
bcn = rcu_dereference_protected(ifmsh->beacon,
lockdep_is_held(&sdata->wdev.mtx));
- rcu_assign_pointer(ifmsh->beacon, NULL);
+ RCU_INIT_POINTER(ifmsh->beacon, NULL);
kfree_rcu(bcn, rcu_head);
/* flush STAs and mpaths on this iface */
{
struct cfg80211_csa_settings params;
struct ieee80211_csa_ie csa_ie;
- struct ieee80211_chanctx_conf *chanctx_conf;
- struct ieee80211_chanctx *chanctx;
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
- int err, num_chanctx;
+ int err;
u32 sta_flags;
- if (sdata->vif.csa_active)
- return true;
-
- if (!ifmsh->mesh_id)
- return false;
+ sdata_assert_lock(sdata);
sta_flags = IEEE80211_STA_DISABLE_VHT;
switch (sdata->vif.bss_conf.chandef.width) {
params.chandef = csa_ie.chandef;
params.count = csa_ie.count;
- if (sdata->vif.bss_conf.chandef.chan->band !=
- params.chandef.chan->band)
- return false;
-
if (!cfg80211_chandef_usable(sdata->local->hw.wiphy, ¶ms.chandef,
IEEE80211_CHAN_DISABLED)) {
sdata_info(sdata,
return false;
}
- rcu_read_lock();
- chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
- if (!chanctx_conf)
- goto failed_chswitch;
-
- /* don't handle for multi-VIF cases */
- chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
- if (chanctx->refcount > 1)
- goto failed_chswitch;
-
- num_chanctx = 0;
- list_for_each_entry_rcu(chanctx, &sdata->local->chanctx_list, list)
- num_chanctx++;
-
- if (num_chanctx > 1)
- goto failed_chswitch;
-
- rcu_read_unlock();
+ if (cfg80211_chandef_identical(¶ms.chandef,
+ &sdata->vif.bss_conf.chandef)) {
+ mcsa_dbg(sdata,
+ "received csa with an identical chandef, ignoring\n");
+ return true;
+ }
mcsa_dbg(sdata,
"received channel switch announcement to go to channel %d MHz\n",
ifmsh->pre_value = csa_ie.pre_value;
}
- if (ifmsh->chsw_ttl < ifmsh->mshcfg.dot11MeshTTL) {
- if (ieee80211_mesh_csa_beacon(sdata, ¶ms, false) < 0)
- return false;
- } else {
+ if (ifmsh->chsw_ttl >= ifmsh->mshcfg.dot11MeshTTL)
return false;
- }
- sdata->csa_radar_required = params.radar_required;
+ ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_REPEATER;
- if (params.block_tx)
- ieee80211_stop_queues_by_reason(&sdata->local->hw,
- IEEE80211_MAX_QUEUE_MAP,
- IEEE80211_QUEUE_STOP_REASON_CSA);
-
- sdata->csa_chandef = params.chandef;
- sdata->vif.csa_active = true;
-
- ieee80211_bss_info_change_notify(sdata, err);
- drv_channel_switch_beacon(sdata, ¶ms.chandef);
+ if (ieee80211_channel_switch(sdata->local->hw.wiphy, sdata->dev,
+ ¶ms) < 0)
+ return false;
return true;
-failed_chswitch:
- rcu_read_unlock();
- return false;
}
static void
ifmsh->sync_ops->rx_bcn_presp(sdata,
stype, mgmt, &elems, rx_status);
- if (!ifmsh->chsw_init)
+ if (ifmsh->csa_role != IEEE80211_MESH_CSA_ROLE_INIT &&
+ !sdata->vif.csa_active)
ieee80211_mesh_process_chnswitch(sdata, &elems, true);
}
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct mesh_csa_settings *tmp_csa_settings;
int ret = 0;
+ int changed = 0;
/* Reset the TTL value and Initiator flag */
- ifmsh->chsw_init = false;
+ ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
ifmsh->chsw_ttl = 0;
/* Remove the CSA and MCSP elements from the beacon */
tmp_csa_settings = rcu_dereference(ifmsh->csa);
- rcu_assign_pointer(ifmsh->csa, NULL);
- kfree_rcu(tmp_csa_settings, rcu_head);
+ RCU_INIT_POINTER(ifmsh->csa, NULL);
+ if (tmp_csa_settings)
+ kfree_rcu(tmp_csa_settings, rcu_head);
ret = ieee80211_mesh_rebuild_beacon(sdata);
if (ret)
return -EINVAL;
- ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
+ changed |= BSS_CHANGED_BEACON;
mcsa_dbg(sdata, "complete switching to center freq %d MHz",
sdata->vif.bss_conf.chandef.chan->center_freq);
- return 0;
+ return changed;
}
int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
- struct cfg80211_csa_settings *csa_settings,
- bool csa_action)
+ struct cfg80211_csa_settings *csa_settings)
{
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct mesh_csa_settings *tmp_csa_settings;
ret = ieee80211_mesh_rebuild_beacon(sdata);
if (ret) {
tmp_csa_settings = rcu_dereference(ifmsh->csa);
- rcu_assign_pointer(ifmsh->csa, NULL);
+ RCU_INIT_POINTER(ifmsh->csa, NULL);
kfree_rcu(tmp_csa_settings, rcu_head);
return ret;
}
- ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
-
- if (csa_action)
- ieee80211_send_action_csa(sdata, csa_settings);
-
- return 0;
+ return BSS_CHANGED_BEACON;
}
static int mesh_fwd_csa_frame(struct ieee80211_sub_if_data *sdata,
ifmsh->pre_value = pre_value;
- if (!ieee80211_mesh_process_chnswitch(sdata, &elems, false)) {
+ if (!sdata->vif.csa_active &&
+ !ieee80211_mesh_process_chnswitch(sdata, &elems, false)) {
mcsa_dbg(sdata, "Failed to process CSA action frame");
return;
}
sdata_lock(sdata);
/* mesh already went down */
- if (!sdata->wdev.mesh_id_len)
+ if (!sdata->u.mesh.mesh_id_len)
goto out;
rx_status = IEEE80211_SKB_RXCB(skb);
sdata_lock(sdata);
/* mesh already went down */
- if (!sdata->wdev.mesh_id_len)
+ if (!sdata->u.mesh.mesh_id_len)
goto out;
if (ifmsh->preq_queue_len &&
mesh_rmc_init(sdata);
ifmsh->last_preq = jiffies;
ifmsh->next_perr = jiffies;
- ifmsh->chsw_init = false;
+ ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
/* Allocate all mesh structures when creating the first mesh interface. */
if (!mesh_allocated)
ieee80211s_init();
projects / deliverable / linux.git / blobdiff