[15/27] wifi: mac80211: extend ieee80211_nullfunc_get() for MLO

Message ID	20220902161143.5c355f56ae0e.I0dfa6e8c5e2e4f8715aed9e47c4e4ca739c28430@changeid (mailing list archive)
State	Accepted
Delegated to:	Johannes Berg
Headers	show Return-Path: <linux-wireless-owner@kernel.org> From: Johannes Berg <johannes@sipsolutions.net> To: linux-wireless@vger.kernel.org Cc: Johannes Berg <johannes.berg@intel.com> Subject: [PATCH 15/27] wifi: mac80211: extend ieee80211_nullfunc_get() for MLO Date: Fri, 2 Sep 2022 16:12:47 +0200 Message-Id: <20220902161143.5c355f56ae0e.I0dfa6e8c5e2e4f8715aed9e47c4e4ca739c28430@changeid> In-Reply-To: <20220902141259.377789-1-johannes@sipsolutions.net> References: <20220902141259.377789-1-johannes@sipsolutions.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	another set of MLO patches \| expand [00/27] another set of MLO patches [01/27] wifi: mac80211_hwsim: remove multicast workaround [02/27] wifi: mac80211: remove unused arg to ieee80211_chandef_eht_oper [03/27] wifi: mac80211_hwsim: check STA magic in change_sta_links [04/27] wifi: mac80211_hwsim: refactor RX a bit [05/27] wifi: mac80211: move link code to a new file [06/27] wifi: mac80211: mlme: assign link address correctly [07/27] wifi: mac80211_hwsim: warn on invalid link address [08/27] wifi: mac80211: use correct rx link_sta instead of default [09/27] wifi: mac80211: make smps_mode per-link [10/27] wifi: mac80211: isolate driver from inactive links [11/27] wifi: mac80211: add ieee80211_find_sta_by_link_addrs API [12/27] wifi: mac80211_hwsim: skip inactive links on TX [13/27] wifi: mac80211_hwsim: track active STA links [14/27] wifi: mac80211: mlme: refactor QoS settings code [15/27] wifi: mac80211: extend ieee80211_nullfunc_get() for MLO [16/27] wifi: mac80211_hwsim: send NDP for link (de)activation [17/27] wifi: mac80211_hwsim: fix multi-channel handling in netlink RX [18/27] wifi: nl80211: add MLD address to assoc BSS entries [19/27] wifi: mac80211: call drv_sta_state() under sdata_lock() in reconfig [20/27] wifi: mac80211: add vif/sta link RCU dereference macros [21/27] wifi: mac80211: set up beacon timing config on links [22/27] wifi: mac80211: keep A-MSDU data in sta and per-link [23/27] wifi: mac80211: fix double SW scan stop [24/27] wifi: mac80211: implement link switching [25/27] wifi: mac80211_hwsim: always activate all links [26/27] wifi: mac80211: prevent 4-addr use on MLDs [27/27] wifi: mac80211: prevent VLANs on MLDs

diff --git a/drivers/net/wireless/ath/ath9k/channel.c b/drivers/net/wireless/ath/ath9k/channel.c index 6cf087522157..571062f2e82a 100644 --- a/drivers/net/wireless/ath/ath9k/channel.c +++ b/drivers/net/wireless/ath/ath9k/channel.c @@ -1113,7 +1113,7 @@ ath_chanctx_send_vif_ps_frame(struct ath_softc *sc, struct ath_vif *avp, if (!avp->assoc) return false; - skb = ieee80211_nullfunc_get(sc->hw, vif, false); + skb = ieee80211_nullfunc_get(sc->hw, vif, -1, false); if (!skb) return false; diff --git a/drivers/net/wireless/realtek/rtw88/fw.c b/drivers/net/wireless/realtek/rtw88/fw.c index babba68a7132..7f6fdebae203 100644 --- a/drivers/net/wireless/realtek/rtw88/fw.c +++ b/drivers/net/wireless/realtek/rtw88/fw.c @@ -1082,10 +1082,10 @@ static struct sk_buff *rtw_get_rsvd_page_skb(struct ieee80211_hw *hw, skb_new = ieee80211_proberesp_get(hw, vif); break; case RSVD_NULL: - skb_new = ieee80211_nullfunc_get(hw, vif, false); + skb_new = ieee80211_nullfunc_get(hw, vif, -1, false); break; case RSVD_QOS_NULL: - skb_new = ieee80211_nullfunc_get(hw, vif, true); + skb_new = ieee80211_nullfunc_get(hw, vif, -1, true); break; case RSVD_LPS_PG_DPK: skb_new = rtw_lps_pg_dpk_get(hw); diff --git a/drivers/net/wireless/st/cw1200/sta.c b/drivers/net/wireless/st/cw1200/sta.c index 26d3614519b1..8ef1d06b9bbd 100644 --- a/drivers/net/wireless/st/cw1200/sta.c +++ b/drivers/net/wireless/st/cw1200/sta.c @@ -195,7 +195,7 @@ void __cw1200_cqm_bssloss_sm(struct cw1200_common *priv, priv->bss_loss_state++; - skb = ieee80211_nullfunc_get(priv->hw, priv->vif, false); + skb = ieee80211_nullfunc_get(priv->hw, priv->vif, -1, false); WARN_ON(!skb); if (skb) cw1200_tx(priv->hw, NULL, skb); @@ -2263,7 +2263,7 @@ static int cw1200_upload_null(struct cw1200_common *priv) .rate = 0xFF, }; - frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif, false); + frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif,-1, false); if (!frame.skb) return -ENOMEM; diff --git a/drivers/net/wireless/ti/wl1251/main.c b/drivers/net/wireless/ti/wl1251/main.c index 9144ef5538a8..289371689a8d 100644 --- a/drivers/net/wireless/ti/wl1251/main.c +++ b/drivers/net/wireless/ti/wl1251/main.c @@ -546,7 +546,7 @@ static int wl1251_build_null_data(struct wl1251 *wl) size = sizeof(struct wl12xx_null_data_template); ptr = NULL; } else { - skb = ieee80211_nullfunc_get(wl->hw, wl->vif, false); + skb = ieee80211_nullfunc_get(wl->hw, wl->vif, -1, false); if (!skb) goto out; size = skb->len; diff --git a/drivers/net/wireless/ti/wlcore/cmd.c b/drivers/net/wireless/ti/wlcore/cmd.c index 138edd28b0de..a939fd89a7f5 100644 --- a/drivers/net/wireless/ti/wlcore/cmd.c +++ b/drivers/net/wireless/ti/wlcore/cmd.c @@ -1065,7 +1065,7 @@ int wl12xx_cmd_build_null_data(struct wl1271 *wl, struct wl12xx_vif *wlvif) } else { skb = ieee80211_nullfunc_get(wl->hw, wl12xx_wlvif_to_vif(wlvif), - false); + -1, false); if (!skb) goto out; size = skb->len; @@ -1092,7 +1092,7 @@ int wl12xx_cmd_build_klv_null_data(struct wl1271 *wl, struct sk_buff *skb = NULL; int ret = -ENOMEM; - skb = ieee80211_nullfunc_get(wl->hw, vif, false); + skb = ieee80211_nullfunc_get(wl->hw, vif,-1, false); if (!skb) goto out; diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 954cc029a9f9..bfa6a1625c5c 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -5298,6 +5298,9 @@ struct sk_buff *ieee80211_pspoll_get(struct ieee80211_hw *hw, * ieee80211_nullfunc_get - retrieve a nullfunc template * @hw: pointer obtained from ieee80211_alloc_hw(). * @vif: &struct ieee80211_vif pointer from the add_interface callback. + * @link_id: If the vif is an MLD, get a frame with the link addresses + * for the given link ID. For a link_id < 0 you get a frame with + * MLD addresses, however useful that might be. * @qos_ok: QoS NDP is acceptable to the caller, this should be set * if at all possible * @@ -5315,7 +5318,7 @@ struct sk_buff *ieee80211_pspoll_get(struct ieee80211_hw *hw, */ struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - bool qos_ok); + int link_id, bool qos_ok); /** * ieee80211_probereq_get - retrieve a Probe Request template diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index bbc62815b067..bf883f2e6de3 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1546,8 +1546,9 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local, struct ieee80211_hdr_3addr *nullfunc; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif, - !ieee80211_hw_check(&local->hw, DOESNT_SUPPORT_QOS_NDP)); + skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif, -1, + !ieee80211_hw_check(&local->hw, + DOESNT_SUPPORT_QOS_NDP)); if (!skb) return; diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 51d564c8742b..30293e49e444 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -5469,33 +5469,39 @@ EXPORT_SYMBOL(ieee80211_pspoll_get); struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - bool qos_ok) + int link_id, bool qos_ok) { + struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); + struct ieee80211_local *local = sdata->local; + struct ieee80211_link_data *link = NULL; struct ieee80211_hdr_3addr *nullfunc; - struct ieee80211_sub_if_data *sdata; - struct ieee80211_local *local; struct sk_buff *skb; bool qos = false; if (WARN_ON(vif->type != NL80211_IFTYPE_STATION)) return NULL; - sdata = vif_to_sdata(vif); - local = sdata->local; + skb = dev_alloc_skb(local->hw.extra_tx_headroom + + sizeof(*nullfunc) + 2); + if (!skb) + return NULL; + rcu_read_lock(); if (qos_ok) { struct sta_info *sta; - rcu_read_lock(); - sta = sta_info_get(sdata, sdata->deflink.u.mgd.bssid); + sta = sta_info_get(sdata, vif->cfg.ap_addr); qos = sta && sta->sta.wme; - rcu_read_unlock(); } - skb = dev_alloc_skb(local->hw.extra_tx_headroom + - sizeof(*nullfunc) + 2); - if (!skb) - return NULL; + if (link_id >= 0) { + link = rcu_dereference(sdata->link[link_id]); + if (WARN_ON_ONCE(!link)) { + rcu_read_unlock(); + kfree_skb(skb); + return NULL; + } + } skb_reserve(skb, local->hw.extra_tx_headroom); @@ -5516,9 +5522,16 @@ struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw, skb_put_data(skb, &qoshdr, sizeof(qoshdr)); } - memcpy(nullfunc->addr1, sdata->deflink.u.mgd.bssid, ETH_ALEN); - memcpy(nullfunc->addr2, vif->addr, ETH_ALEN); - memcpy(nullfunc->addr3, sdata->deflink.u.mgd.bssid, ETH_ALEN); + if (link) { + memcpy(nullfunc->addr1, link->conf->bssid, ETH_ALEN); + memcpy(nullfunc->addr2, link->conf->addr, ETH_ALEN); + memcpy(nullfunc->addr3, link->conf->bssid, ETH_ALEN); + } else { + memcpy(nullfunc->addr1, vif->cfg.ap_addr, ETH_ALEN); + memcpy(nullfunc->addr2, vif->addr, ETH_ALEN); + memcpy(nullfunc->addr3, vif->cfg.ap_addr, ETH_ALEN); + } + rcu_read_unlock(); return skb; }

[15/27] wifi: mac80211: extend ieee80211_nullfunc_get() for MLO

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