[v4,07/10] wifi: mac80211: extend ifcomb check functions for multi-radio

Message ID	12a4e3fba7ffc988874e8f37319f096c51b15417.1719919832.git-series.nbd@nbd.name (mailing list archive)
State	New
Delegated to:	Johannes Berg
Headers	show Received: from nbd.name (nbd.name [46.4.11.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 478C615B122 for <linux-wireless@vger.kernel.org>; Tue, 2 Jul 2024 11:36:10 +0000 (UTC) From: Felix Fietkau <nbd@nbd.name> To: linux-wireless@vger.kernel.org Cc: johannes@sipsolutions.net, quic_adisi@quicinc.com, quic_periyasa@quicinc.com, ath12k@lists.infradead.org Subject: [PATCH v4 07/10] wifi: mac80211: extend ifcomb check functions for multi-radio Date: Tue, 2 Jul 2024 13:36:02 +0200 Message-ID: <12a4e3fba7ffc988874e8f37319f096c51b15417.1719919832.git-series.nbd@nbd.name> In-Reply-To: <cover.39da4d3b01ce5545ac85da8cab3179f7c7a351a8.1719919832.git-series.nbd@nbd.name> References: <cover.39da4d3b01ce5545ac85da8cab3179f7c7a351a8.1719919832.git-series.nbd@nbd.name> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit
Series	cfg80211/mac80211: support defining multiple radios per wiphy \| expand [v4,00/10] cfg80211/mac80211: support defining multiple radios per wiphy [v4,01/10] wifi: nl80211: split helper function from nl80211_put_iface_combinations [v4,02/10] wifi: cfg80211: add support for advertising multiple radios belonging to a wiphy [v4,03/10] wifi: cfg80211: extend interface combination check for multi-radio [v4,04/10] wifi: cfg80211: add helper for checking if a chandef is valid on a radio [v4,05/10] wifi: mac80211: add support for DFS with multiple radios [v4,06/10] wifi: mac80211: add radio index to ieee80211_chanctx_conf [v4,07/10] wifi: mac80211: extend ifcomb check functions for multi-radio [v4,08/10] wifi: mac80211: move code in ieee80211_link_reserve_chanctx to a helper [v4,09/10] wifi: mac80211: add wiphy radio assignment and validation [v4,10/10] wifi: mac80211_hwsim: add support for multi-radio wiphy

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 3d49b3ee3a2b..85cb71de370f 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -263,7 +263,7 @@ static int ieee80211_start_p2p_device(struct wiphy *wiphy, lockdep_assert_wiphy(sdata->local->hw.wiphy); - ret = ieee80211_check_combinations(sdata, NULL, 0, 0); + ret = ieee80211_check_combinations(sdata, NULL, 0, 0, -1); if (ret < 0) return ret; @@ -285,7 +285,7 @@ static int ieee80211_start_nan(struct wiphy *wiphy, lockdep_assert_wiphy(sdata->local->hw.wiphy); - ret = ieee80211_check_combinations(sdata, NULL, 0, 0); + ret = ieee80211_check_combinations(sdata, NULL, 0, 0, -1); if (ret < 0) return ret; @@ -4008,7 +4008,7 @@ __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, goto out; /* if reservation is invalid then this will fail */ - err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); + err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0, -1); if (err) { ieee80211_link_unreserve_chanctx(link_data); goto out; @@ -5203,4 +5203,5 @@ const struct cfg80211_ops mac80211_config_ops = { .del_link_station = ieee80211_del_link_station, .set_hw_timestamp = ieee80211_set_hw_timestamp, .set_ttlm = ieee80211_set_ttlm, + .get_radio_mask = ieee80211_get_radio_mask, }; diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index 6c4d02cb07bb..12bad02da561 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -47,24 +47,29 @@ int ieee80211_chanctx_refcount(struct ieee80211_local *local, ieee80211_chanctx_num_reserved(local, ctx); } -static int ieee80211_num_chanctx(struct ieee80211_local *local) +static int ieee80211_num_chanctx(struct ieee80211_local *local, int radio_idx) { struct ieee80211_chanctx *ctx; int num = 0; lockdep_assert_wiphy(local->hw.wiphy); - list_for_each_entry(ctx, &local->chanctx_list, list) + list_for_each_entry(ctx, &local->chanctx_list, list) { + if (radio_idx >= 0 && ctx->conf.radio_idx != radio_idx) + continue; num++; + } return num; } -static bool ieee80211_can_create_new_chanctx(struct ieee80211_local *local) +static bool ieee80211_can_create_new_chanctx(struct ieee80211_local *local, + int radio_idx) { lockdep_assert_wiphy(local->hw.wiphy); - return ieee80211_num_chanctx(local) < ieee80211_max_num_channels(local); + return ieee80211_num_chanctx(local, radio_idx) < + ieee80211_max_num_channels(local, radio_idx); } static struct ieee80211_chanctx * @@ -1101,7 +1106,7 @@ int ieee80211_link_reserve_chanctx(struct ieee80211_link_data *link, new_ctx = ieee80211_find_reservation_chanctx(local, chanreq, mode); if (!new_ctx) { - if (ieee80211_can_create_new_chanctx(local)) { + if (ieee80211_can_create_new_chanctx(local, -1)) { new_ctx = ieee80211_new_chanctx(local, chanreq, mode, false); if (IS_ERR(new_ctx)) @@ -1822,7 +1827,7 @@ int _ieee80211_link_use_channel(struct ieee80211_link_data *link, link->radar_required = ret; ret = ieee80211_check_combinations(sdata, &chanreq->oper, mode, - radar_detect_width); + radar_detect_width, -1); if (ret < 0) goto out; diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index 7db4c3ee7e6d..3f74bbceeca5 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -1746,7 +1746,7 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, IEEE80211_CHANCTX_SHARED : IEEE80211_CHANCTX_EXCLUSIVE; ret = ieee80211_check_combinations(sdata, &params->chandef, chanmode, - radar_detect_width); + radar_detect_width, -1); if (ret < 0) return ret; diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 6349552e62a8..a3485e4c6132 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -2640,8 +2640,9 @@ void ieee80211_recalc_dtim(struct ieee80211_local *local, int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, const struct cfg80211_chan_def *chandef, enum ieee80211_chanctx_mode chanmode, - u8 radar_detect); -int ieee80211_max_num_channels(struct ieee80211_local *local); + u8 radar_detect, int radio_idx); +int ieee80211_max_num_channels(struct ieee80211_local *local, int radio_idx); +u32 ieee80211_get_radio_mask(struct wiphy *wiphy, struct net_device *dev); void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, struct ieee80211_chanctx *ctx); diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 6d969d9f1ac9..adf907e15d70 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -397,7 +397,7 @@ static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata, } } - return ieee80211_check_combinations(sdata, NULL, 0, 0); + return ieee80211_check_combinations(sdata, NULL, 0, 0, -1); } static int ieee80211_check_queues(struct ieee80211_sub_if_data *sdata, diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 27f0db2e9796..f683df997114 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -3932,19 +3932,97 @@ static u8 ieee80211_chanctx_radar_detect(struct ieee80211_local *local, return radar_detect; } +static u32 +__ieee80211_get_radio_mask(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_bss_conf *link_conf; + struct ieee80211_chanctx_conf *conf; + unsigned int link_id; + u32 mask = 0; + + for_each_vif_active_link(&sdata->vif, link_conf, link_id) { + conf = sdata_dereference(link_conf->chanctx_conf, sdata); + if (!conf || conf->radio_idx < 0) + continue; + + mask |= BIT(conf->radio_idx); + } + + return mask; +} + +u32 ieee80211_get_radio_mask(struct wiphy *wiphy, struct net_device *dev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + return __ieee80211_get_radio_mask(sdata); +} + +static bool +ieee80211_sdata_uses_radio(struct ieee80211_sub_if_data *sdata, int radio_idx) +{ + if (radio_idx < 0) + return true; + + return __ieee80211_get_radio_mask(sdata) & BIT(radio_idx); +} + +static void +ieee80211_fill_ifcomb_params(struct ieee80211_local *local, + struct iface_combination_params *params, + const struct cfg80211_chan_def *chandef, + struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_sub_if_data *sdata_iter; + struct ieee80211_chanctx *ctx; + + list_for_each_entry(ctx, &local->chanctx_list, list) { + if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) + continue; + + if (params->radio_idx >= 0 && + ctx->conf.radio_idx != params->radio_idx) + continue; + + if (chandef && + cfg80211_chandef_compatible(chandef, &ctx->conf.def)) + continue; + + params->num_different_channels++; + + params->radar_detect |= + ieee80211_chanctx_radar_detect(local, ctx); + } + + list_for_each_entry(sdata_iter, &local->interfaces, list) { + struct wireless_dev *wdev_iter; + + wdev_iter = &sdata_iter->wdev; + + if (sdata_iter == sdata || + !ieee80211_sdata_running(sdata_iter) || + cfg80211_iftype_allowed(local->hw.wiphy, + wdev_iter->iftype, 0, 1)) + continue; + + if (!ieee80211_sdata_uses_radio(sdata_iter, params->radio_idx)) + continue; + + params->iftype_num[wdev_iter->iftype]++; + } +} + int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, const struct cfg80211_chan_def *chandef, enum ieee80211_chanctx_mode chanmode, - u8 radar_detect) + u8 radar_detect, int radio_idx) { + bool shared = chanmode == IEEE80211_CHANCTX_SHARED; struct ieee80211_local *local = sdata->local; - struct ieee80211_sub_if_data *sdata_iter; enum nl80211_iftype iftype = sdata->wdev.iftype; - struct ieee80211_chanctx *ctx; - int total = 1; struct iface_combination_params params = { .radar_detect = radar_detect, - .radio_idx = -1, + .radio_idx = radio_idx, }; lockdep_assert_wiphy(local->hw.wiphy); @@ -3982,39 +4060,8 @@ int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, if (iftype != NL80211_IFTYPE_UNSPECIFIED) params.iftype_num[iftype] = 1; - list_for_each_entry(ctx, &local->chanctx_list, list) { - if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) - continue; - params.radar_detect |= - ieee80211_chanctx_radar_detect(local, ctx); - if (ctx->mode == IEEE80211_CHANCTX_EXCLUSIVE) { - params.num_different_channels++; - continue; - } - if (chandef && chanmode == IEEE80211_CHANCTX_SHARED && - cfg80211_chandef_compatible(chandef, - &ctx->conf.def)) - continue; - params.num_different_channels++; - } - - list_for_each_entry_rcu(sdata_iter, &local->interfaces, list) { - struct wireless_dev *wdev_iter; - - wdev_iter = &sdata_iter->wdev; - - if (sdata_iter == sdata || - !ieee80211_sdata_running(sdata_iter) || - cfg80211_iftype_allowed(local->hw.wiphy, - wdev_iter->iftype, 0, 1)) - continue; - - params.iftype_num[wdev_iter->iftype]++; - total++; - } - - if (total == 1 && !params.radar_detect) - return 0; + ieee80211_fill_ifcomb_params(local, &params, shared ? chandef : NULL, + sdata); return cfg80211_check_combinations(local->hw.wiphy, &params); } @@ -4029,30 +4076,17 @@ ieee80211_iter_max_chans(const struct ieee80211_iface_combination *c, c->num_different_channels); } -int ieee80211_max_num_channels(struct ieee80211_local *local) +int ieee80211_max_num_channels(struct ieee80211_local *local, int radio_idx) { - struct ieee80211_sub_if_data *sdata; - struct ieee80211_chanctx *ctx; u32 max_num_different_channels = 1; int err; struct iface_combination_params params = { - .radio_idx = -1, + .radio_idx = radio_idx, }; lockdep_assert_wiphy(local->hw.wiphy); - list_for_each_entry(ctx, &local->chanctx_list, list) { - if (ctx->replace_state == IEEE80211_CHANCTX_WILL_BE_REPLACED) - continue; - - params.num_different_channels++; - - params.radar_detect |= - ieee80211_chanctx_radar_detect(local, ctx); - } - - list_for_each_entry_rcu(sdata, &local->interfaces, list) - params.iftype_num[sdata->wdev.iftype]++; + ieee80211_fill_ifcomb_params(local, &params, NULL, NULL); err = cfg80211_iter_combinations(local->hw.wiphy, &params, ieee80211_iter_max_chans,

[v4,07/10] wifi: mac80211: extend ifcomb check functions for multi-radio

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Patch