From 6d03a247468059b0e59c821ef39e6762d4d6fc30 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 19 Jun 2024 23:00:51 +0200 Subject: Merging upstream version 6.9.2. Signed-off-by: Daniel Baumann --- net/mac80211/chan.c | 735 ++++++++++++++++++++++++---------------------------- 1 file changed, 341 insertions(+), 394 deletions(-) (limited to 'net/mac80211/chan.c') diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index ef4c2cebc0..ccacaed328 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -1,7 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-only /* * mac80211 - channel management - * Copyright 2020 - 2022 Intel Corporation + * Copyright 2020 - 2024 Intel Corporation */ #include @@ -81,87 +81,122 @@ ieee80211_link_get_chanctx(struct ieee80211_link_data *link) return container_of(conf, struct ieee80211_chanctx, conf); } -static const struct cfg80211_chan_def * -ieee80211_chanctx_reserved_chandef(struct ieee80211_local *local, +bool ieee80211_chanreq_identical(const struct ieee80211_chan_req *a, + const struct ieee80211_chan_req *b) +{ + if (!cfg80211_chandef_identical(&a->oper, &b->oper)) + return false; + if (!a->ap.chan && !b->ap.chan) + return true; + return cfg80211_chandef_identical(&a->ap, &b->ap); +} + +static const struct ieee80211_chan_req * +ieee80211_chanreq_compatible(const struct ieee80211_chan_req *a, + const struct ieee80211_chan_req *b, + struct ieee80211_chan_req *tmp) +{ + const struct cfg80211_chan_def *compat; + + if (a->ap.chan && b->ap.chan && + !cfg80211_chandef_identical(&a->ap, &b->ap)) + return NULL; + + compat = cfg80211_chandef_compatible(&a->oper, &b->oper); + if (!compat) + return NULL; + + /* Note: later code assumes this always fills & returns tmp if compat */ + tmp->oper = *compat; + tmp->ap = a->ap.chan ? a->ap : b->ap; + return tmp; +} + +static const struct ieee80211_chan_req * +ieee80211_chanctx_compatible(struct ieee80211_chanctx *ctx, + const struct ieee80211_chan_req *req, + struct ieee80211_chan_req *tmp) +{ + const struct ieee80211_chan_req *ret; + struct ieee80211_chan_req tmp2; + + *tmp = (struct ieee80211_chan_req){ + .oper = ctx->conf.def, + .ap = ctx->conf.ap, + }; + + ret = ieee80211_chanreq_compatible(tmp, req, &tmp2); + if (!ret) + return NULL; + *tmp = *ret; + return tmp; +} + +static const struct ieee80211_chan_req * +ieee80211_chanctx_reserved_chanreq(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, - const struct cfg80211_chan_def *compat) + const struct ieee80211_chan_req *req, + struct ieee80211_chan_req *tmp) { struct ieee80211_link_data *link; lockdep_assert_wiphy(local->hw.wiphy); - list_for_each_entry(link, &ctx->reserved_links, - reserved_chanctx_list) { - if (!compat) - compat = &link->reserved_chandef; + if (WARN_ON(!req)) + return NULL; - compat = cfg80211_chandef_compatible(&link->reserved_chandef, - compat); - if (!compat) + list_for_each_entry(link, &ctx->reserved_links, reserved_chanctx_list) { + req = ieee80211_chanreq_compatible(&link->reserved, req, tmp); + if (!req) break; } - return compat; + return req; } -static const struct cfg80211_chan_def * +static const struct ieee80211_chan_req * ieee80211_chanctx_non_reserved_chandef(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, - const struct cfg80211_chan_def *compat) + const struct ieee80211_chan_req *compat, + struct ieee80211_chan_req *tmp) { struct ieee80211_link_data *link; + const struct ieee80211_chan_req *comp_def = compat; lockdep_assert_wiphy(local->hw.wiphy); - list_for_each_entry(link, &ctx->assigned_links, - assigned_chanctx_list) { + list_for_each_entry(link, &ctx->assigned_links, assigned_chanctx_list) { struct ieee80211_bss_conf *link_conf = link->conf; if (link->reserved_chanctx) continue; - if (!compat) - compat = &link_conf->chandef; - - compat = cfg80211_chandef_compatible( - &link_conf->chandef, compat); - if (!compat) + comp_def = ieee80211_chanreq_compatible(&link_conf->chanreq, + comp_def, tmp); + if (!comp_def) break; } - return compat; -} - -static const struct cfg80211_chan_def * -ieee80211_chanctx_combined_chandef(struct ieee80211_local *local, - struct ieee80211_chanctx *ctx, - const struct cfg80211_chan_def *compat) -{ - lockdep_assert_wiphy(local->hw.wiphy); - - compat = ieee80211_chanctx_reserved_chandef(local, ctx, compat); - if (!compat) - return NULL; - - compat = ieee80211_chanctx_non_reserved_chandef(local, ctx, compat); - if (!compat) - return NULL; - - return compat; + return comp_def; } static bool -ieee80211_chanctx_can_reserve_chandef(struct ieee80211_local *local, - struct ieee80211_chanctx *ctx, - const struct cfg80211_chan_def *def) +ieee80211_chanctx_can_reserve(struct ieee80211_local *local, + struct ieee80211_chanctx *ctx, + const struct ieee80211_chan_req *req) { + struct ieee80211_chan_req tmp; + lockdep_assert_wiphy(local->hw.wiphy); - if (ieee80211_chanctx_combined_chandef(local, ctx, def)) - return true; + if (!ieee80211_chanctx_reserved_chanreq(local, ctx, req, &tmp)) + return false; + + if (!ieee80211_chanctx_non_reserved_chandef(local, ctx, req, &tmp)) + return false; if (!list_empty(&ctx->reserved_links) && - ieee80211_chanctx_reserved_chandef(local, ctx, def)) + ieee80211_chanctx_reserved_chanreq(local, ctx, req, &tmp)) return true; return false; @@ -169,7 +204,7 @@ ieee80211_chanctx_can_reserve_chandef(struct ieee80211_local *local, static struct ieee80211_chanctx * ieee80211_find_reservation_chanctx(struct ieee80211_local *local, - const struct cfg80211_chan_def *chandef, + const struct ieee80211_chan_req *chanreq, enum ieee80211_chanctx_mode mode) { struct ieee80211_chanctx *ctx; @@ -186,8 +221,7 @@ ieee80211_find_reservation_chanctx(struct ieee80211_local *local, if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) continue; - if (!ieee80211_chanctx_can_reserve_chandef(local, ctx, - chandef)) + if (!ieee80211_chanctx_can_reserve(local, ctx, chanreq)) continue; return ctx; @@ -202,7 +236,7 @@ static enum nl80211_chan_width ieee80211_get_sta_bw(struct sta_info *sta, enum ieee80211_sta_rx_bandwidth width; struct link_sta_info *link_sta; - link_sta = rcu_dereference(sta->link[link_id]); + link_sta = wiphy_dereference(sta->local->hw.wiphy, sta->link[link_id]); /* no effect if this STA has no presence on this link */ if (!link_sta) @@ -240,9 +274,10 @@ static enum nl80211_chan_width ieee80211_get_sta_bw(struct sta_info *sta, } static enum nl80211_chan_width -ieee80211_get_max_required_bw(struct ieee80211_sub_if_data *sdata, - unsigned int link_id) +ieee80211_get_max_required_bw(struct ieee80211_link_data *link) { + struct ieee80211_sub_if_data *sdata = link->sdata; + unsigned int link_id = link->link_id; enum nl80211_chan_width max_bw = NL80211_CHAN_WIDTH_20_NOHT; struct sta_info *sta; @@ -258,31 +293,25 @@ ieee80211_get_max_required_bw(struct ieee80211_sub_if_data *sdata, } static enum nl80211_chan_width -ieee80211_get_chanctx_vif_max_required_bw(struct ieee80211_sub_if_data *sdata, - struct ieee80211_chanctx *ctx, - struct ieee80211_link_data *rsvd_for) +ieee80211_get_chanctx_max_required_bw(struct ieee80211_local *local, + struct ieee80211_chanctx *ctx, + struct ieee80211_link_data *rsvd_for) { + struct ieee80211_sub_if_data *sdata; + struct ieee80211_link_data *link; enum nl80211_chan_width max_bw = NL80211_CHAN_WIDTH_20_NOHT; - struct ieee80211_vif *vif = &sdata->vif; - int link_id; - rcu_read_lock(); - for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { + for_each_sdata_link(local, link) { enum nl80211_chan_width width = NL80211_CHAN_WIDTH_20_NOHT; - struct ieee80211_link_data *link = - rcu_dereference(sdata->link[link_id]); - - if (!link) - continue; if (link != rsvd_for && rcu_access_pointer(link->conf->chanctx_conf) != &ctx->conf) continue; - switch (vif->type) { + switch (link->sdata->vif.type) { case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: - width = ieee80211_get_max_required_bw(sdata, link_id); + width = ieee80211_get_max_required_bw(link); break; case NL80211_IFTYPE_STATION: /* @@ -290,8 +319,8 @@ ieee80211_get_chanctx_vif_max_required_bw(struct ieee80211_sub_if_data *sdata, * point, so take the width from the chandef, but * account also for TDLS peers */ - width = max(link->conf->chandef.width, - ieee80211_get_max_required_bw(sdata, link_id)); + width = max(link->conf->chanreq.oper.width, + ieee80211_get_max_required_bw(link)); break; case NL80211_IFTYPE_P2P_DEVICE: case NL80211_IFTYPE_NAN: @@ -299,7 +328,7 @@ ieee80211_get_chanctx_vif_max_required_bw(struct ieee80211_sub_if_data *sdata, case NL80211_IFTYPE_ADHOC: case NL80211_IFTYPE_MESH_POINT: case NL80211_IFTYPE_OCB: - width = link->conf->chandef.width; + width = link->conf->chanreq.oper.width; break; case NL80211_IFTYPE_WDS: case NL80211_IFTYPE_UNSPECIFIED: @@ -312,40 +341,13 @@ ieee80211_get_chanctx_vif_max_required_bw(struct ieee80211_sub_if_data *sdata, max_bw = max(max_bw, width); } - rcu_read_unlock(); - - return max_bw; -} - -static enum nl80211_chan_width -ieee80211_get_chanctx_max_required_bw(struct ieee80211_local *local, - struct ieee80211_chanctx *ctx, - struct ieee80211_link_data *rsvd_for) -{ - struct ieee80211_sub_if_data *sdata; - enum nl80211_chan_width max_bw = NL80211_CHAN_WIDTH_20_NOHT; - - rcu_read_lock(); - list_for_each_entry_rcu(sdata, &local->interfaces, list) { - enum nl80211_chan_width width; - - if (!ieee80211_sdata_running(sdata)) - continue; - - width = ieee80211_get_chanctx_vif_max_required_bw(sdata, ctx, - rsvd_for); - - max_bw = max(max_bw, width); - } /* use the configured bandwidth in case of monitor interface */ - sdata = rcu_dereference(local->monitor_sdata); + sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); if (sdata && rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf) == &ctx->conf) max_bw = max(max_bw, ctx->conf.def.width); - rcu_read_unlock(); - return max_bw; } @@ -382,7 +384,7 @@ _ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, /* downgrade chandef up to max_bw */ min_def = ctx->conf.def; while (min_def.width > max_bw) - ieee80211_chandef_downgrade(&min_def); + ieee80211_chandef_downgrade(&min_def, NULL); if (cfg80211_chandef_identical(&ctx->conf.min_def, &min_def)) return 0; @@ -395,7 +397,7 @@ _ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, } /* calling this function is assuming that station vif is updated to - * lates changes by calling ieee80211_link_update_chandef + * lates changes by calling ieee80211_link_update_chanreq */ static void ieee80211_chan_bw_change(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, @@ -475,10 +477,15 @@ void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, static void _ieee80211_change_chanctx(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, struct ieee80211_chanctx *old_ctx, - const struct cfg80211_chan_def *chandef, + const struct ieee80211_chan_req *chanreq, struct ieee80211_link_data *rsvd_for) { - u32 changed; + const struct cfg80211_chan_def *chandef = &chanreq->oper; + struct ieee80211_chan_req ctx_req = { + .oper = ctx->conf.def, + .ap = ctx->conf.ap, + }; + u32 changed = 0; /* expected to handle only 20/40/80/160/320 channel widths */ switch (chandef->width) { @@ -500,47 +507,52 @@ static void _ieee80211_change_chanctx(struct ieee80211_local *local, */ ieee80211_chan_bw_change(local, old_ctx, true); - if (cfg80211_chandef_identical(&ctx->conf.def, chandef)) { + if (ieee80211_chanreq_identical(&ctx_req, chanreq)) { ieee80211_recalc_chanctx_min_def(local, ctx, rsvd_for); return; } - WARN_ON(!cfg80211_chandef_compatible(&ctx->conf.def, chandef)); + WARN_ON(ieee80211_chanctx_refcount(local, ctx) > 1 && + !cfg80211_chandef_compatible(&ctx->conf.def, &chanreq->oper)); ieee80211_remove_wbrf(local, &ctx->conf.def); + if (!cfg80211_chandef_identical(&ctx->conf.def, &chanreq->oper)) { + if (ctx->conf.def.width != chanreq->oper.width) + changed |= IEEE80211_CHANCTX_CHANGE_WIDTH; + if (ctx->conf.def.punctured != chanreq->oper.punctured) + changed |= IEEE80211_CHANCTX_CHANGE_PUNCTURING; + } + if (!cfg80211_chandef_identical(&ctx->conf.ap, &chanreq->ap)) + changed |= IEEE80211_CHANCTX_CHANGE_AP; ctx->conf.def = *chandef; + ctx->conf.ap = chanreq->ap; /* check if min chanctx also changed */ - changed = IEEE80211_CHANCTX_CHANGE_WIDTH | - _ieee80211_recalc_chanctx_min_def(local, ctx, rsvd_for); + changed |= _ieee80211_recalc_chanctx_min_def(local, ctx, rsvd_for); ieee80211_add_wbrf(local, &ctx->conf.def); drv_change_chanctx(local, ctx, changed); - if (!local->use_chanctx) { - local->_oper_chandef = *chandef; - ieee80211_hw_config(local, 0); - } - - /* check is BW wider */ + /* check if BW is wider */ ieee80211_chan_bw_change(local, old_ctx, false); } static void ieee80211_change_chanctx(struct ieee80211_local *local, struct ieee80211_chanctx *ctx, struct ieee80211_chanctx *old_ctx, - const struct cfg80211_chan_def *chandef) + const struct ieee80211_chan_req *chanreq) { - _ieee80211_change_chanctx(local, ctx, old_ctx, chandef, NULL); + _ieee80211_change_chanctx(local, ctx, old_ctx, chanreq, NULL); } static struct ieee80211_chanctx * ieee80211_find_chanctx(struct ieee80211_local *local, - const struct cfg80211_chan_def *chandef, + const struct ieee80211_chan_req *chanreq, enum ieee80211_chanctx_mode mode) { + struct ieee80211_chan_req tmp; struct ieee80211_chanctx *ctx; lockdep_assert_wiphy(local->hw.wiphy); @@ -549,7 +561,7 @@ ieee80211_find_chanctx(struct ieee80211_local *local, return NULL; list_for_each_entry(ctx, &local->chanctx_list, list) { - const struct cfg80211_chan_def *compat; + const struct ieee80211_chan_req *compat; if (ctx->replace_state != IEEE80211_CHANCTX_REPLACE_NONE) continue; @@ -557,12 +569,12 @@ ieee80211_find_chanctx(struct ieee80211_local *local, if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) continue; - compat = cfg80211_chandef_compatible(&ctx->conf.def, chandef); + compat = ieee80211_chanctx_compatible(ctx, chanreq, &tmp); if (!compat) continue; - compat = ieee80211_chanctx_reserved_chandef(local, ctx, - compat); + compat = ieee80211_chanctx_reserved_chanreq(local, ctx, + compat, &tmp); if (!compat) continue; @@ -576,26 +588,14 @@ ieee80211_find_chanctx(struct ieee80211_local *local, bool ieee80211_is_radar_required(struct ieee80211_local *local) { - struct ieee80211_sub_if_data *sdata; + struct ieee80211_link_data *link; lockdep_assert_wiphy(local->hw.wiphy); - rcu_read_lock(); - list_for_each_entry_rcu(sdata, &local->interfaces, list) { - unsigned int link_id; - - for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { - struct ieee80211_link_data *link; - - link = rcu_dereference(sdata->link[link_id]); - - if (link && link->radar_required) { - rcu_read_unlock(); - return true; - } - } + for_each_sdata_link(local, link) { + if (link->radar_required) + return true; } - rcu_read_unlock(); return false; } @@ -605,43 +605,24 @@ ieee80211_chanctx_radar_required(struct ieee80211_local *local, struct ieee80211_chanctx *ctx) { struct ieee80211_chanctx_conf *conf = &ctx->conf; - struct ieee80211_sub_if_data *sdata; - bool required = false; + struct ieee80211_link_data *link; lockdep_assert_wiphy(local->hw.wiphy); - rcu_read_lock(); - list_for_each_entry_rcu(sdata, &local->interfaces, list) { - unsigned int link_id; - - if (!ieee80211_sdata_running(sdata)) + for_each_sdata_link(local, link) { + if (rcu_access_pointer(link->conf->chanctx_conf) != conf) continue; - for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { - struct ieee80211_link_data *link; - - link = rcu_dereference(sdata->link[link_id]); - if (!link) - continue; - - if (rcu_access_pointer(link->conf->chanctx_conf) != conf) - continue; - if (!link->radar_required) - continue; - required = true; - break; - } - - if (required) - break; + if (!link->radar_required) + continue; + return true; } - rcu_read_unlock(); - return required; + return false; } static struct ieee80211_chanctx * ieee80211_alloc_chanctx(struct ieee80211_local *local, - const struct cfg80211_chan_def *chandef, + const struct ieee80211_chan_req *chanreq, enum ieee80211_chanctx_mode mode) { struct ieee80211_chanctx *ctx; @@ -654,7 +635,8 @@ ieee80211_alloc_chanctx(struct ieee80211_local *local, INIT_LIST_HEAD(&ctx->assigned_links); INIT_LIST_HEAD(&ctx->reserved_links); - ctx->conf.def = *chandef; + ctx->conf.def = chanreq->oper; + ctx->conf.ap = chanreq->ap; ctx->conf.rx_chains_static = 1; ctx->conf.rx_chains_dynamic = 1; ctx->mode = mode; @@ -674,23 +656,15 @@ static int ieee80211_add_chanctx(struct ieee80211_local *local, ieee80211_add_wbrf(local, &ctx->conf.def); - if (!local->use_chanctx) - local->hw.conf.radar_enabled = ctx->conf.radar_enabled; - /* turn idle off *before* setting channel -- some drivers need that */ changed = ieee80211_idle_off(local); if (changed) ieee80211_hw_config(local, changed); - if (!local->use_chanctx) { - local->_oper_chandef = ctx->conf.def; - ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); - } else { - err = drv_add_chanctx(local, ctx); - if (err) { - ieee80211_recalc_idle(local); - return err; - } + err = drv_add_chanctx(local, ctx); + if (err) { + ieee80211_recalc_idle(local); + return err; } return 0; @@ -698,7 +672,7 @@ static int ieee80211_add_chanctx(struct ieee80211_local *local, static struct ieee80211_chanctx * ieee80211_new_chanctx(struct ieee80211_local *local, - const struct cfg80211_chan_def *chandef, + const struct ieee80211_chan_req *chanreq, enum ieee80211_chanctx_mode mode) { struct ieee80211_chanctx *ctx; @@ -706,7 +680,7 @@ ieee80211_new_chanctx(struct ieee80211_local *local, lockdep_assert_wiphy(local->hw.wiphy); - ctx = ieee80211_alloc_chanctx(local, chandef, mode); + ctx = ieee80211_alloc_chanctx(local, chanreq, mode); if (!ctx) return ERR_PTR(-ENOMEM); @@ -725,32 +699,7 @@ static void ieee80211_del_chanctx(struct ieee80211_local *local, { lockdep_assert_wiphy(local->hw.wiphy); - if (!local->use_chanctx) { - struct cfg80211_chan_def *chandef = &local->_oper_chandef; - /* S1G doesn't have 20MHz, so get the correct width for the - * current channel. - */ - if (chandef->chan->band == NL80211_BAND_S1GHZ) - chandef->width = - ieee80211_s1g_channel_width(chandef->chan); - else - chandef->width = NL80211_CHAN_WIDTH_20_NOHT; - chandef->center_freq1 = chandef->chan->center_freq; - chandef->freq1_offset = chandef->chan->freq_offset; - chandef->center_freq2 = 0; - - /* NOTE: Disabling radar is only valid here for - * single channel context. To be sure, check it ... - */ - WARN_ON(local->hw.conf.radar_enabled && - !list_empty(&local->chanctx_list)); - - local->hw.conf.radar_enabled = false; - - ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); - } else { - drv_remove_chanctx(local, ctx); - } + drv_remove_chanctx(local, ctx); ieee80211_recalc_idle(local); @@ -773,64 +722,53 @@ void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, struct ieee80211_chanctx *ctx) { struct ieee80211_chanctx_conf *conf = &ctx->conf; - struct ieee80211_sub_if_data *sdata; - const struct cfg80211_chan_def *compat = NULL; + const struct ieee80211_chan_req *compat = NULL; + struct ieee80211_link_data *link; + struct ieee80211_chan_req tmp; struct sta_info *sta; lockdep_assert_wiphy(local->hw.wiphy); - rcu_read_lock(); - list_for_each_entry_rcu(sdata, &local->interfaces, list) { - int link_id; + for_each_sdata_link(local, link) { + struct ieee80211_bss_conf *link_conf; - if (!ieee80211_sdata_running(sdata)) + if (link->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) continue; - if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) - continue; + link_conf = link->conf; - for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { - struct ieee80211_bss_conf *link_conf = - rcu_dereference(sdata->vif.link_conf[link_id]); - - if (!link_conf) - continue; - - if (rcu_access_pointer(link_conf->chanctx_conf) != conf) - continue; + if (rcu_access_pointer(link_conf->chanctx_conf) != conf) + continue; - if (!compat) - compat = &link_conf->chandef; + if (!compat) + compat = &link_conf->chanreq; - compat = cfg80211_chandef_compatible(&link_conf->chandef, - compat); - if (WARN_ON_ONCE(!compat)) - break; - } + compat = ieee80211_chanreq_compatible(&link_conf->chanreq, + compat, &tmp); + if (WARN_ON_ONCE(!compat)) + return; } - if (WARN_ON_ONCE(!compat)) { - rcu_read_unlock(); + if (WARN_ON_ONCE(!compat)) return; - } /* TDLS peers can sometimes affect the chandef width */ - list_for_each_entry_rcu(sta, &local->sta_list, list) { + list_for_each_entry(sta, &local->sta_list, list) { + struct ieee80211_chan_req tdls_chanreq = {}; if (!sta->uploaded || !test_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW) || !test_sta_flag(sta, WLAN_STA_AUTHORIZED) || !sta->tdls_chandef.chan) continue; - compat = cfg80211_chandef_compatible(&sta->tdls_chandef, - compat); + tdls_chanreq.oper = sta->tdls_chandef; + + /* note this always fills and returns &tmp if compat */ + compat = ieee80211_chanreq_compatible(&tdls_chanreq, + compat, &tmp); if (WARN_ON_ONCE(!compat)) - break; + return; } - rcu_read_unlock(); - - if (!compat) - return; ieee80211_change_chanctx(local, ctx, ctx, compat); } @@ -849,11 +787,6 @@ static void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local, chanctx->conf.radar_enabled = radar_enabled; - if (!local->use_chanctx) { - local->hw.conf.radar_enabled = chanctx->conf.radar_enabled; - ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); - } - drv_change_chanctx(local, chanctx, IEEE80211_CHANCTX_CHANGE_RADAR); } @@ -864,6 +797,7 @@ static int ieee80211_assign_link_chanctx(struct ieee80211_link_data *link, struct ieee80211_local *local = sdata->local; struct ieee80211_chanctx_conf *conf; struct ieee80211_chanctx *curr_ctx = NULL; + bool new_idle; int ret = 0; if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_NAN)) @@ -896,8 +830,6 @@ static int ieee80211_assign_link_chanctx(struct ieee80211_link_data *link, out: rcu_assign_pointer(link->conf->chanctx_conf, conf); - sdata->vif.cfg.idle = !conf; - if (curr_ctx && ieee80211_chanctx_num_assigned(local, curr_ctx) > 0) { ieee80211_recalc_chanctx_chantype(local, curr_ctx); ieee80211_recalc_smps_chanctx(local, curr_ctx); @@ -910,9 +842,27 @@ out: ieee80211_recalc_chanctx_min_def(local, new_ctx, NULL); } - if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && - sdata->vif.type != NL80211_IFTYPE_MONITOR) - ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_IDLE); + if (conf) { + new_idle = false; + } else { + struct ieee80211_link_data *tmp; + + new_idle = true; + for_each_sdata_link(local, tmp) { + if (rcu_access_pointer(tmp->conf->chanctx_conf)) { + new_idle = false; + break; + } + } + } + + if (new_idle != sdata->vif.cfg.idle) { + sdata->vif.cfg.idle = new_idle; + + if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE && + sdata->vif.type != NL80211_IFTYPE_MONITOR) + ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_IDLE); + } ieee80211_check_fast_xmit_iface(sdata); @@ -924,23 +874,19 @@ void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, { struct ieee80211_sub_if_data *sdata; u8 rx_chains_static, rx_chains_dynamic; + struct ieee80211_link_data *link; lockdep_assert_wiphy(local->hw.wiphy); rx_chains_static = 1; rx_chains_dynamic = 1; - rcu_read_lock(); - list_for_each_entry_rcu(sdata, &local->interfaces, list) { + for_each_sdata_link(local, link) { u8 needed_static, needed_dynamic; - unsigned int link_id; - - if (!ieee80211_sdata_running(sdata)) - continue; - switch (sdata->vif.type) { + switch (link->sdata->vif.type) { case NL80211_IFTYPE_STATION: - if (!sdata->u.mgd.associated) + if (!link->sdata->u.mgd.associated) continue; break; case NL80211_IFTYPE_AP: @@ -952,59 +898,38 @@ void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, continue; } - for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) { - struct ieee80211_link_data *link; - - link = rcu_dereference(sdata->link[link_id]); - - if (!link) - continue; - - if (rcu_access_pointer(link->conf->chanctx_conf) != &chanctx->conf) - continue; - - switch (link->smps_mode) { - default: - WARN_ONCE(1, "Invalid SMPS mode %d\n", - link->smps_mode); - fallthrough; - case IEEE80211_SMPS_OFF: - needed_static = link->needed_rx_chains; - needed_dynamic = link->needed_rx_chains; - break; - case IEEE80211_SMPS_DYNAMIC: - needed_static = 1; - needed_dynamic = link->needed_rx_chains; - break; - case IEEE80211_SMPS_STATIC: - needed_static = 1; - needed_dynamic = 1; - break; - } + if (rcu_access_pointer(link->conf->chanctx_conf) != &chanctx->conf) + continue; - rx_chains_static = max(rx_chains_static, needed_static); - rx_chains_dynamic = max(rx_chains_dynamic, needed_dynamic); + switch (link->smps_mode) { + default: + WARN_ONCE(1, "Invalid SMPS mode %d\n", + link->smps_mode); + fallthrough; + case IEEE80211_SMPS_OFF: + needed_static = link->needed_rx_chains; + needed_dynamic = link->needed_rx_chains; + break; + case IEEE80211_SMPS_DYNAMIC: + needed_static = 1; + needed_dynamic = link->needed_rx_chains; + break; + case IEEE80211_SMPS_STATIC: + needed_static = 1; + needed_dynamic = 1; + break; } + + rx_chains_static = max(rx_chains_static, needed_static); + rx_chains_dynamic = max(rx_chains_dynamic, needed_dynamic); } /* Disable SMPS for the monitor interface */ - sdata = rcu_dereference(local->monitor_sdata); + sdata = wiphy_dereference(local->hw.wiphy, local->monitor_sdata); if (sdata && rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf) == &chanctx->conf) rx_chains_dynamic = rx_chains_static = local->rx_chains; - rcu_read_unlock(); - - if (!local->use_chanctx) { - if (rx_chains_static > 1) - local->smps_mode = IEEE80211_SMPS_OFF; - else if (rx_chains_dynamic > 1) - local->smps_mode = IEEE80211_SMPS_DYNAMIC; - else - local->smps_mode = IEEE80211_SMPS_STATIC; - ieee80211_hw_config(local, 0); - } - if (rx_chains_static == chanctx->conf.rx_chains_static && rx_chains_dynamic == chanctx->conf.rx_chains_dynamic) return; @@ -1043,17 +968,16 @@ __ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link, if (clear) conf = NULL; - rcu_read_lock(); list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { struct ieee80211_bss_conf *vlan_conf; - vlan_conf = rcu_dereference(vlan->vif.link_conf[link_id]); + vlan_conf = wiphy_dereference(local->hw.wiphy, + vlan->vif.link_conf[link_id]); if (WARN_ON(!vlan_conf)) continue; rcu_assign_pointer(vlan_conf->chanctx_conf, conf); } - rcu_read_unlock(); } void ieee80211_link_copy_chanctx_to_vlans(struct ieee80211_link_data *link, @@ -1103,7 +1027,7 @@ int ieee80211_link_unreserve_chanctx(struct ieee80211_link_data *link) } int ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link, - const struct cfg80211_chan_def *chandef, + const struct ieee80211_chan_req *chanreq, enum ieee80211_chanctx_mode mode, bool radar_required) { @@ -1114,13 +1038,13 @@ int ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link, lockdep_assert_wiphy(local->hw.wiphy); curr_ctx = ieee80211_link_get_chanctx(link); - if (curr_ctx && local->use_chanctx && !local->ops->switch_vif_chanctx) + if (curr_ctx && !local->ops->switch_vif_chanctx) return -EOPNOTSUPP; - new_ctx = ieee80211_find_reservation_chanctx(local, chandef, mode); + new_ctx = ieee80211_find_reservation_chanctx(local, chanreq, mode); if (!new_ctx) { if (ieee80211_can_create_new_chanctx(local)) { - new_ctx = ieee80211_new_chanctx(local, chandef, mode); + new_ctx = ieee80211_new_chanctx(local, chanreq, mode); if (IS_ERR(new_ctx)) return PTR_ERR(new_ctx); } else { @@ -1174,7 +1098,7 @@ int ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link, !list_empty(&curr_ctx->reserved_links)) return -EBUSY; - new_ctx = ieee80211_alloc_chanctx(local, chandef, mode); + new_ctx = ieee80211_alloc_chanctx(local, chanreq, mode); if (!new_ctx) return -ENOMEM; @@ -1192,7 +1116,7 @@ int ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link, list_add(&link->reserved_chanctx_list, &new_ctx->reserved_links); link->reserved_chanctx = new_ctx; - link->reserved_chandef = *chandef; + link->reserved = *chanreq; link->reserved_radar_required = radar_required; link->reserved_ready = false; @@ -1231,29 +1155,28 @@ ieee80211_link_chanctx_reservation_complete(struct ieee80211_link_data *link) } static void -ieee80211_link_update_chandef(struct ieee80211_link_data *link, - const struct cfg80211_chan_def *chandef) +ieee80211_link_update_chanreq(struct ieee80211_link_data *link, + const struct ieee80211_chan_req *chanreq) { struct ieee80211_sub_if_data *sdata = link->sdata; unsigned int link_id = link->link_id; struct ieee80211_sub_if_data *vlan; - link->conf->chandef = *chandef; + link->conf->chanreq = *chanreq; if (sdata->vif.type != NL80211_IFTYPE_AP) return; - rcu_read_lock(); list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { struct ieee80211_bss_conf *vlan_conf; - vlan_conf = rcu_dereference(vlan->vif.link_conf[link_id]); + vlan_conf = wiphy_dereference(sdata->local->hw.wiphy, + vlan->vif.link_conf[link_id]); if (WARN_ON(!vlan_conf)) continue; - vlan_conf->chandef = *chandef; + vlan_conf->chanreq = *chanreq; } - rcu_read_unlock(); } static int @@ -1264,7 +1187,8 @@ ieee80211_link_use_reserved_reassign(struct ieee80211_link_data *link) struct ieee80211_local *local = sdata->local; struct ieee80211_vif_chanctx_switch vif_chsw[1] = {}; struct ieee80211_chanctx *old_ctx, *new_ctx; - const struct cfg80211_chan_def *chandef; + const struct ieee80211_chan_req *chanreq; + struct ieee80211_chan_req tmp; u64 changed = 0; int err; @@ -1286,17 +1210,18 @@ ieee80211_link_use_reserved_reassign(struct ieee80211_link_data *link) IEEE80211_CHANCTX_REPLACES_OTHER)) return -EINVAL; - chandef = ieee80211_chanctx_non_reserved_chandef(local, new_ctx, - &link->reserved_chandef); - if (WARN_ON(!chandef)) + chanreq = ieee80211_chanctx_non_reserved_chandef(local, new_ctx, + &link->reserved, + &tmp); + if (WARN_ON(!chanreq)) return -EINVAL; - if (link_conf->chandef.width != link->reserved_chandef.width) + if (link_conf->chanreq.oper.width != link->reserved.oper.width) changed = BSS_CHANGED_BANDWIDTH; - ieee80211_link_update_chandef(link, &link->reserved_chandef); + ieee80211_link_update_chanreq(link, &link->reserved); - _ieee80211_change_chanctx(local, new_ctx, old_ctx, chandef, link); + _ieee80211_change_chanctx(local, new_ctx, old_ctx, chanreq, link); vif_chsw[0].vif = &sdata->vif; vif_chsw[0].old_ctx = &old_ctx->conf; @@ -1344,7 +1269,8 @@ ieee80211_link_use_reserved_assign(struct ieee80211_link_data *link) struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_local *local = sdata->local; struct ieee80211_chanctx *old_ctx, *new_ctx; - const struct cfg80211_chan_def *chandef; + const struct ieee80211_chan_req *chanreq; + struct ieee80211_chan_req tmp; int err; old_ctx = ieee80211_link_get_chanctx(link); @@ -1363,12 +1289,13 @@ ieee80211_link_use_reserved_assign(struct ieee80211_link_data *link) IEEE80211_CHANCTX_REPLACES_OTHER)) return -EINVAL; - chandef = ieee80211_chanctx_non_reserved_chandef(local, new_ctx, - &link->reserved_chandef); - if (WARN_ON(!chandef)) + chanreq = ieee80211_chanctx_non_reserved_chandef(local, new_ctx, + &link->reserved, + &tmp); + if (WARN_ON(!chanreq)) return -EINVAL; - ieee80211_change_chanctx(local, new_ctx, new_ctx, chandef); + ieee80211_change_chanctx(local, new_ctx, new_ctx, chanreq); list_del(&link->reserved_chanctx_list); link->reserved_chanctx = NULL; @@ -1412,24 +1339,6 @@ ieee80211_link_has_in_place_reservation(struct ieee80211_link_data *link) return true; } -static int ieee80211_chsw_switch_hwconf(struct ieee80211_local *local, - struct ieee80211_chanctx *new_ctx) -{ - const struct cfg80211_chan_def *chandef; - - lockdep_assert_wiphy(local->hw.wiphy); - - chandef = ieee80211_chanctx_reserved_chandef(local, new_ctx, NULL); - if (WARN_ON(!chandef)) - return -EINVAL; - - local->hw.conf.radar_enabled = new_ctx->conf.radar_enabled; - local->_oper_chandef = *chandef; - ieee80211_hw_config(local, 0); - - return 0; -} - static int ieee80211_chsw_switch_vifs(struct ieee80211_local *local, int n_vifs) { @@ -1518,7 +1427,6 @@ err: static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local) { struct ieee80211_chanctx *ctx, *ctx_tmp, *old_ctx; - struct ieee80211_chanctx *new_ctx = NULL; int err, n_assigned, n_reserved, n_ready; int n_ctx = 0, n_vifs_switch = 0, n_vifs_assign = 0, n_vifs_ctxless = 0; @@ -1551,9 +1459,6 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local) goto err; } - if (!local->use_chanctx) - new_ctx = ctx; - n_ctx++; n_assigned = 0; @@ -1607,9 +1512,7 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local) if (WARN_ON(n_ctx == 0) || WARN_ON(n_vifs_switch == 0 && n_vifs_assign == 0 && - n_vifs_ctxless == 0) || - WARN_ON(n_ctx > 1 && !local->use_chanctx) || - WARN_ON(!new_ctx && !local->use_chanctx)) { + n_vifs_ctxless == 0)) { err = -EINVAL; goto err; } @@ -1619,20 +1522,14 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local) * reservations and driver capabilities. */ - if (local->use_chanctx) { - if (n_vifs_switch > 0) { - err = ieee80211_chsw_switch_vifs(local, n_vifs_switch); - if (err) - goto err; - } + if (n_vifs_switch > 0) { + err = ieee80211_chsw_switch_vifs(local, n_vifs_switch); + if (err) + goto err; + } - if (n_vifs_assign > 0 || n_vifs_ctxless > 0) { - err = ieee80211_chsw_switch_ctxs(local); - if (err) - goto err; - } - } else { - err = ieee80211_chsw_switch_hwconf(local, new_ctx); + if (n_vifs_assign > 0 || n_vifs_ctxless > 0) { + err = ieee80211_chsw_switch_ctxs(local); if (err) goto err; } @@ -1672,10 +1569,10 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local) link->radar_required = link->reserved_radar_required; - if (link_conf->chandef.width != link->reserved_chandef.width) + if (link_conf->chanreq.oper.width != link->reserved.oper.width) changed = BSS_CHANGED_BANDWIDTH; - ieee80211_link_update_chandef(link, &link->reserved_chandef); + ieee80211_link_update_chanreq(link, &link->reserved); if (changed) ieee80211_link_info_change_notify(sdata, link, @@ -1810,7 +1707,7 @@ static void __ieee80211_link_release_channel(struct ieee80211_link_data *link) } int ieee80211_link_use_channel(struct ieee80211_link_data *link, - const struct cfg80211_chan_def *chandef, + const struct ieee80211_chan_req *chanreq, enum ieee80211_chanctx_mode mode) { struct ieee80211_sub_if_data *sdata = link->sdata; @@ -1821,38 +1718,37 @@ int ieee80211_link_use_channel(struct ieee80211_link_data *link, lockdep_assert_wiphy(local->hw.wiphy); - if (sdata->vif.active_links && - !(sdata->vif.active_links & BIT(link->link_id))) { - ieee80211_link_update_chandef(link, chandef); + if (!ieee80211_vif_link_active(&sdata->vif, link->link_id)) { + ieee80211_link_update_chanreq(link, chanreq); return 0; } ret = cfg80211_chandef_dfs_required(local->hw.wiphy, - chandef, + &chanreq->oper, sdata->wdev.iftype); if (ret < 0) goto out; if (ret > 0) - radar_detect_width = BIT(chandef->width); + radar_detect_width = BIT(chanreq->oper.width); link->radar_required = ret; - ret = ieee80211_check_combinations(sdata, chandef, mode, + ret = ieee80211_check_combinations(sdata, &chanreq->oper, mode, radar_detect_width); if (ret < 0) goto out; __ieee80211_link_release_channel(link); - ctx = ieee80211_find_chanctx(local, chandef, mode); + ctx = ieee80211_find_chanctx(local, chanreq, mode); if (!ctx) - ctx = ieee80211_new_chanctx(local, chandef, mode); + ctx = ieee80211_new_chanctx(local, chanreq, mode); if (IS_ERR(ctx)) { ret = PTR_ERR(ctx); goto out; } - ieee80211_link_update_chandef(link, chandef); + ieee80211_link_update_chanreq(link, chanreq); ret = ieee80211_assign_link_chanctx(link, ctx); if (ret) { @@ -1932,28 +1828,79 @@ int ieee80211_link_use_reserved_context(struct ieee80211_link_data *link) return 0; } -int ieee80211_link_change_bandwidth(struct ieee80211_link_data *link, - const struct cfg80211_chan_def *chandef, - u64 *changed) +/* + * This is similar to ieee80211_chanctx_compatible(), but rechecks + * against all the links actually using it (except the one that's + * passed, since that one is changing). + * This is done in order to allow changes to the AP's bandwidth for + * wider bandwidth OFDMA purposes, which wouldn't be treated as + * compatible by ieee80211_chanctx_recheck() but is OK if the link + * requesting the update is the only one using it. + */ +static const struct ieee80211_chan_req * +ieee80211_chanctx_recheck(struct ieee80211_local *local, + struct ieee80211_link_data *skip_link, + struct ieee80211_chanctx *ctx, + const struct ieee80211_chan_req *req, + struct ieee80211_chan_req *tmp) +{ + const struct ieee80211_chan_req *ret = req; + struct ieee80211_link_data *link; + + lockdep_assert_wiphy(local->hw.wiphy); + + for_each_sdata_link(local, link) { + if (link == skip_link) + continue; + + if (rcu_access_pointer(link->conf->chanctx_conf) == &ctx->conf) { + ret = ieee80211_chanreq_compatible(ret, + &link->conf->chanreq, + tmp); + if (!ret) + return NULL; + } + + if (link->reserved_chanctx == ctx) { + ret = ieee80211_chanreq_compatible(ret, + &link->reserved, + tmp); + if (!ret) + return NULL; + } + } + + *tmp = *ret; + return tmp; +} + +int ieee80211_link_change_chanreq(struct ieee80211_link_data *link, + const struct ieee80211_chan_req *chanreq, + u64 *changed) { struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_bss_conf *link_conf = link->conf; struct ieee80211_local *local = sdata->local; struct ieee80211_chanctx_conf *conf; struct ieee80211_chanctx *ctx; - const struct cfg80211_chan_def *compat; + const struct ieee80211_chan_req *compat; + struct ieee80211_chan_req tmp; lockdep_assert_wiphy(local->hw.wiphy); - if (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef, + if (!cfg80211_chandef_usable(sdata->local->hw.wiphy, + &chanreq->oper, IEEE80211_CHAN_DISABLED)) return -EINVAL; - if (cfg80211_chandef_identical(chandef, &link_conf->chandef)) + /* for non-HT 20 MHz the rest doesn't matter */ + if (chanreq->oper.width == NL80211_CHAN_WIDTH_20_NOHT && + cfg80211_chandef_identical(&chanreq->oper, &link_conf->chanreq.oper)) return 0; - if (chandef->width == NL80211_CHAN_WIDTH_20_NOHT || - link_conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT) + /* but you cannot switch to/from it */ + if (chanreq->oper.width == NL80211_CHAN_WIDTH_20_NOHT || + link_conf->chanreq.oper.width == NL80211_CHAN_WIDTH_20_NOHT) return -EINVAL; conf = rcu_dereference_protected(link_conf->chanctx_conf, @@ -1963,13 +1910,14 @@ int ieee80211_link_change_bandwidth(struct ieee80211_link_data *link, ctx = container_of(conf, struct ieee80211_chanctx, conf); - compat = cfg80211_chandef_compatible(&conf->def, chandef); + compat = ieee80211_chanctx_recheck(local, link, ctx, chanreq, &tmp); if (!compat) return -EINVAL; switch (ctx->replace_state) { case IEEE80211_CHANCTX_REPLACE_NONE: - if (!ieee80211_chanctx_reserved_chandef(local, ctx, compat)) + if (!ieee80211_chanctx_reserved_chanreq(local, ctx, compat, + &tmp)) return -EBUSY; break; case IEEE80211_CHANCTX_WILL_BE_REPLACED: @@ -1984,7 +1932,7 @@ int ieee80211_link_change_bandwidth(struct ieee80211_link_data *link, break; } - ieee80211_link_update_chandef(link, chandef); + ieee80211_link_update_chanreq(link, chanreq); ieee80211_recalc_chanctx_chantype(local, ctx); @@ -2019,12 +1967,11 @@ void ieee80211_link_vlan_copy_chanctx(struct ieee80211_link_data *link) ap = container_of(sdata->bss, struct ieee80211_sub_if_data, u.ap); - rcu_read_lock(); - ap_conf = rcu_dereference(ap->vif.link_conf[link_id]); - conf = rcu_dereference_protected(ap_conf->chanctx_conf, - lockdep_is_held(&local->hw.wiphy->mtx)); + ap_conf = wiphy_dereference(local->hw.wiphy, + ap->vif.link_conf[link_id]); + conf = wiphy_dereference(local->hw.wiphy, + ap_conf->chanctx_conf); rcu_assign_pointer(link_conf->chanctx_conf, conf); - rcu_read_unlock(); } void ieee80211_iter_chan_contexts_atomic( -- cgit v1.2.3