From f1871abd27641c020298b5c7654e1d8341f22e5f Mon Sep 17 00:00:00 2001 From: Ilan Peer Date: Thu, 8 Jun 2023 16:36:08 +0300 Subject: [PATCH] wifi: mac80211: Add getter functions for vif MLD state As a preparation to support disabled/dormant links, add the following function: - ieee80211_vif_usable_links(): returns the bitmap of the links that can be activated. Use this function in all the places that the bitmap of the usable links is needed. - ieee80211_vif_is_mld(): returns true iff the vif is an MLD. Use this function in all the places where an indication that the connection is a MLD is needed. Signed-off-by: Ilan Peer Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230608163202.86e3351da1fc.If6fe3a339fda2019f13f57ff768ecffb711b710a@changeid Signed-off-by: Johannes Berg --- include/net/mac80211.h | 21 +++++++++++++++++++ net/mac80211/cfg.c | 4 ++-- net/mac80211/debug.h | 8 +++---- net/mac80211/ieee80211_i.h | 2 +- net/mac80211/iface.c | 4 ++-- net/mac80211/link.c | 4 ++-- net/mac80211/mlme.c | 43 +++++++++++++++++++------------------- net/mac80211/rx.c | 2 +- net/mac80211/tx.c | 22 +++++++++---------- net/mac80211/util.c | 14 ++++++------- 10 files changed, 73 insertions(+), 51 deletions(-) --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -1936,6 +1936,27 @@ struct ieee80211_vif { u8 drv_priv[] __aligned(sizeof(void *)); }; +/** + * ieee80211_vif_usable_links - Return the usable links for the vif + * @vif: the vif for which the usable links are requested + * Return: the usable link bitmap + */ +static inline u16 ieee80211_vif_usable_links(const struct ieee80211_vif *vif) +{ + return vif->valid_links; +} + +/** + * ieee80211_vif_is_mld - Returns true iff the vif is an MLD one + * @vif: the vif + * Return: %true if the vif is an MLD, %false otherwise. + */ +static inline bool ieee80211_vif_is_mld(const struct ieee80211_vif *vif) +{ + /* valid_links != 0 indicates this vif is an MLD */ + return vif->valid_links != 0; +} + #define for_each_vif_active_link(vif, link, link_id) \ for (link_id = 0; link_id < ARRAY_SIZE((vif)->link_conf); link_id++) \ if ((!(vif)->active_links || \ --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -35,7 +35,7 @@ ieee80211_link_or_deflink(struct ieee802 * the return value at all (if it's not a pairwise key), * so in that case (require_valid==false) don't error. */ - if (require_valid && sdata->vif.valid_links) + if (require_valid && ieee80211_vif_is_mld(&sdata->vif)) return ERR_PTR(-EINVAL); return &sdata->deflink; @@ -228,7 +228,7 @@ static int ieee80211_change_iface(struct return 0; /* FIXME: no support for 4-addr MLO yet */ - if (sdata->vif.valid_links) + if (ieee80211_vif_is_mld(&sdata->vif)) return -EOPNOTSUPP; sdata->u.mgd.use_4addr = params->use_4addr; --- a/net/mac80211/debug.h +++ b/net/mac80211/debug.h @@ -1,7 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* * Portions - * Copyright (C) 2022 Intel Corporation + * Copyright (C) 2022 - 2023 Intel Corporation */ #ifndef __MAC80211_DEBUG_H #define __MAC80211_DEBUG_H @@ -136,7 +136,7 @@ do { \ #define link_info(link, fmt, ...) \ do { \ - if ((link)->sdata->vif.valid_links) \ + if (ieee80211_vif_is_mld(&(link)->sdata->vif)) \ _sdata_info((link)->sdata, "[link %d] " fmt, \ (link)->link_id, \ ##__VA_ARGS__); \ @@ -145,7 +145,7 @@ do { \ } while (0) #define link_err(link, fmt, ...) \ do { \ - if ((link)->sdata->vif.valid_links) \ + if (ieee80211_vif_is_mld(&(link)->sdata->vif)) \ _sdata_err((link)->sdata, "[link %d] " fmt, \ (link)->link_id, \ ##__VA_ARGS__); \ @@ -154,7 +154,7 @@ do { \ } while (0) #define link_dbg(link, fmt, ...) \ do { \ - if ((link)->sdata->vif.valid_links) \ + if (ieee80211_vif_is_mld(&(link)->sdata->vif)) \ _sdata_dbg(1, (link)->sdata, "[link %d] " fmt, \ (link)->link_id, \ ##__VA_ARGS__); \ --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1600,7 +1600,7 @@ ieee80211_get_sband(struct ieee80211_sub struct ieee80211_chanctx_conf *chanctx_conf; enum nl80211_band band; - WARN_ON(sdata->vif.valid_links); + WARN_ON(ieee80211_vif_is_mld(&sdata->vif)); rcu_read_lock(); chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -521,7 +521,7 @@ static void ieee80211_do_stop(struct iee cancel_work_sync(&sdata->recalc_smps); sdata_lock(sdata); - WARN(sdata->vif.valid_links, + WARN(ieee80211_vif_is_mld(&sdata->vif), "destroying interface with valid links 0x%04x\n", sdata->vif.valid_links); @@ -1834,7 +1834,7 @@ static int ieee80211_runtime_change_ifty return -EBUSY; /* for now, don't support changing while links exist */ - if (sdata->vif.valid_links) + if (ieee80211_vif_is_mld(&sdata->vif)) return -EBUSY; switch (sdata->vif.type) { --- a/net/mac80211/link.c +++ b/net/mac80211/link.c @@ -324,7 +324,7 @@ static int _ieee80211_set_active_links(s return -EINVAL; /* cannot activate links that don't exist */ - if (active_links & ~sdata->vif.valid_links) + if (active_links & ~ieee80211_vif_usable_links(&sdata->vif)) return -EINVAL; /* nothing to do */ @@ -463,7 +463,7 @@ void ieee80211_set_active_links_async(st return; /* cannot activate links that don't exist */ - if (active_links & ~sdata->vif.valid_links) + if (active_links & ~ieee80211_vif_usable_links(&sdata->vif)) return; /* nothing to do */ --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1287,7 +1287,7 @@ static void ieee80211_assoc_add_ml_elem( u8 *ml_elem_len; void *capab_pos; - if (!sdata->vif.valid_links) + if (!ieee80211_vif_is_mld(&sdata->vif)) return; ift_ext_capa = cfg80211_get_iftype_ext_capa(local->hw.wiphy, @@ -1461,7 +1461,7 @@ static int ieee80211_send_assoc(struct i capab |= WLAN_CAPABILITY_PRIVACY; } - if (sdata->vif.valid_links) { + if (ieee80211_vif_is_mld(&sdata->vif)) { /* consider the multi-link element with STA profile */ size += sizeof(struct ieee80211_multi_link_elem); /* max common info field in basic multi-link element */ @@ -1792,7 +1792,7 @@ void ieee80211_chswitch_done(struct ieee struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - if (WARN_ON(sdata->vif.valid_links)) + if (WARN_ON(ieee80211_vif_is_mld(&sdata->vif))) success = false; trace_api_chswitch_done(sdata, success); @@ -2855,7 +2855,7 @@ static void ieee80211_set_associated(str if (vif_cfg->arp_addr_cnt) vif_changed |= BSS_CHANGED_ARP_FILTER; - if (sdata->vif.valid_links) { + if (ieee80211_vif_is_mld(&sdata->vif)) { for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { @@ -2886,7 +2886,7 @@ static void ieee80211_set_associated(str mutex_unlock(&local->iflist_mtx); /* leave this here to not change ordering in non-MLO cases */ - if (!sdata->vif.valid_links) + if (!ieee80211_vif_is_mld(&sdata->vif)) ieee80211_recalc_smps(sdata, &sdata->deflink); ieee80211_recalc_ps_vif(sdata); @@ -2982,7 +2982,7 @@ static void ieee80211_set_disassoc(struc sta_info_flush(sdata); /* finally reset all BSS / config parameters */ - if (!sdata->vif.valid_links) + if (!ieee80211_vif_is_mld(&sdata->vif)) changed |= ieee80211_reset_erp_info(sdata); ieee80211_led_assoc(local, 0); @@ -3007,7 +3007,7 @@ static void ieee80211_set_disassoc(struc sizeof(sdata->vif.bss_conf.mu_group.membership)); memset(sdata->vif.bss_conf.mu_group.position, 0, sizeof(sdata->vif.bss_conf.mu_group.position)); - if (!sdata->vif.valid_links) + if (!ieee80211_vif_is_mld(&sdata->vif)) changed |= BSS_CHANGED_MU_GROUPS; sdata->vif.bss_conf.mu_mimo_owner = false; @@ -3021,7 +3021,7 @@ static void ieee80211_set_disassoc(struc changed |= BSS_CHANGED_ARP_FILTER; sdata->vif.bss_conf.qos = false; - if (!sdata->vif.valid_links) { + if (!ieee80211_vif_is_mld(&sdata->vif)) { changed |= BSS_CHANGED_QOS; /* The BSSID (not really interesting) and HT changed */ changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; @@ -3191,7 +3191,7 @@ static void ieee80211_mgd_probe_ap_send( u8 unicast_limit = max(1, max_probe_tries - 3); struct sta_info *sta; - if (WARN_ON(sdata->vif.valid_links)) + if (WARN_ON(ieee80211_vif_is_mld(&sdata->vif))) return; /* @@ -3239,7 +3239,7 @@ static void ieee80211_mgd_probe_ap(struc struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; bool already = false; - if (WARN_ON_ONCE(sdata->vif.valid_links)) + if (WARN_ON_ONCE(ieee80211_vif_is_mld(&sdata->vif))) return; if (!ieee80211_sdata_running(sdata)) @@ -3314,7 +3314,7 @@ struct sk_buff *ieee80211_ap_probereq_ge int ssid_len; if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION || - sdata->vif.valid_links)) + ieee80211_vif_is_mld(&sdata->vif))) return NULL; sdata_assert_lock(sdata); @@ -3379,7 +3379,8 @@ static void __ieee80211_disconnect(struc } /* in MLO assume we have a link where we can TX the frame */ - tx = sdata->vif.valid_links || !sdata->deflink.csa_block_tx; + tx = ieee80211_vif_is_mld(&sdata->vif) || + !sdata->deflink.csa_block_tx; if (!ifmgd->driver_disconnect) { unsigned int link_id; @@ -3578,7 +3579,7 @@ static void ieee80211_destroy_assoc_data for (i = 0; i < ARRAY_SIZE(data.bss); i++) data.bss[i] = assoc_data->link[i].bss; - if (sdata->vif.valid_links) + if (ieee80211_vif_is_mld(&sdata->vif)) data.ap_mld_addr = assoc_data->ap_addr; cfg80211_assoc_failure(sdata->dev, &data); @@ -4979,7 +4980,7 @@ static bool ieee80211_assoc_success(stru if (WARN_ON(!sta)) goto out_err; - if (sdata->vif.valid_links) { + if (ieee80211_vif_is_mld(&sdata->vif)) { u16 valid_links = 0; for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) { @@ -5008,7 +5009,7 @@ static bool ieee80211_assoc_success(stru if (WARN_ON(!link)) goto out_err; - if (sdata->vif.valid_links) + if (ieee80211_vif_is_mld(&sdata->vif)) link_info(link, "local address %pM, AP link address %pM\n", link->conf->addr, @@ -5240,7 +5241,7 @@ static void ieee80211_rx_mgmt_assoc_resp ifmgd->broken_ap = true; } - if (sdata->vif.valid_links) { + if (ieee80211_vif_is_mld(&sdata->vif)) { if (!elems->multi_link) { sdata_info(sdata, "MLO association with %pM but no multi-link element in response!\n", @@ -5304,7 +5305,7 @@ static void ieee80211_rx_mgmt_assoc_resp resp.uapsd_queues |= ieee80211_ac_to_qos_mask[ac]; } - if (sdata->vif.valid_links) { + if (ieee80211_vif_is_mld(&sdata->vif)) { ether_addr_copy(ap_mld_addr, sdata->vif.cfg.ap_addr); resp.ap_mld_addr = ap_mld_addr; } @@ -5629,7 +5630,7 @@ static void ieee80211_rx_mgmt_beacon(str rcu_read_unlock(); if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon && - !WARN_ON(sdata->vif.valid_links) && + !WARN_ON(ieee80211_vif_is_mld(&sdata->vif)) && ieee80211_rx_our_beacon(bssid, ifmgd->assoc_data->link[0].bss)) { parse_params.bss = ifmgd->assoc_data->link[0].bss; elems = ieee802_11_parse_elems_full(&parse_params); @@ -6319,7 +6320,7 @@ static void ieee80211_sta_bcn_mon_timer( struct ieee80211_sub_if_data *sdata = from_timer(sdata, t, u.mgd.bcn_mon_timer); - if (WARN_ON(sdata->vif.valid_links)) + if (WARN_ON(ieee80211_vif_is_mld(&sdata->vif))) return; if (sdata->vif.bss_conf.csa_active && @@ -6343,7 +6344,7 @@ static void ieee80211_sta_conn_mon_timer struct sta_info *sta; unsigned long timeout; - if (WARN_ON(sdata->vif.valid_links)) + if (WARN_ON(ieee80211_vif_is_mld(&sdata->vif))) return; if (sdata->vif.bss_conf.csa_active && @@ -6898,7 +6899,7 @@ int ieee80211_mgd_auth(struct ieee80211_ return 0; err_clear: - if (!sdata->vif.valid_links) { + if (!ieee80211_vif_is_mld(&sdata->vif)) { eth_zero_addr(sdata->deflink.u.mgd.bssid); ieee80211_link_info_change_notify(sdata, &sdata->deflink, BSS_CHANGED_BSSID); --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -2526,7 +2526,7 @@ bool ieee80211_is_our_addr(struct ieee80 if (ether_addr_equal(sdata->vif.addr, addr)) return true; - if (!sdata->vif.valid_links) + if (!ieee80211_vif_is_mld(&sdata->vif)) return false; for (link_id = 0; link_id < ARRAY_SIZE(sdata->vif.link_conf); link_id++) { --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -866,7 +866,7 @@ ieee80211_tx_h_sequence(struct ieee80211 /* SNS11 from 802.11be 10.3.2.14 */ if (unlikely(is_multicast_ether_addr(hdr->addr1) && - info->control.vif->valid_links && + ieee80211_vif_is_mld(info->control.vif) && info->control.vif->type == NL80211_IFTYPE_AP)) { if (info->control.flags & IEEE80211_TX_CTRL_MCAST_MLO_FIRST_TX) tx->sdata->mld_mcast_seq += 0x10; @@ -2635,7 +2635,7 @@ static struct sk_buff *ieee80211_build_h ethertype = (skb->data[12] << 8) | skb->data[13]; fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA); - if (!sdata->vif.valid_links) + if (!ieee80211_vif_is_mld(&sdata->vif)) chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); @@ -2652,7 +2652,7 @@ static struct sk_buff *ieee80211_build_h authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); wme_sta = sta->sta.wme; } - if (!sdata->vif.valid_links) { + if (!ieee80211_vif_is_mld(&sdata->vif)) { struct ieee80211_sub_if_data *ap_sdata; /* override chanctx_conf from AP (we don't have one) */ @@ -2670,7 +2670,7 @@ static struct sk_buff *ieee80211_build_h /* DA BSSID SA */ memcpy(hdr.addr1, skb->data, ETH_ALEN); - if (sdata->vif.valid_links && sta && !sta->sta.mlo) { + if (ieee80211_vif_is_mld(&sdata->vif) && sta && !sta->sta.mlo) { struct ieee80211_link_data *link; link_id = sta->deflink.link_id; @@ -2822,7 +2822,7 @@ static struct sk_buff *ieee80211_build_h } if (!chanctx_conf) { - if (!sdata->vif.valid_links) { + if (!ieee80211_vif_is_mld(&sdata->vif)) { ret = -ENOTCONN; goto free; } @@ -3064,7 +3064,7 @@ void ieee80211_check_fast_xmit(struct st !ieee80211_hw_check(&local->hw, SUPPORTS_TX_FRAG)) goto out; - if (!sdata->vif.valid_links) { + if (!ieee80211_vif_is_mld(&sdata->vif)) { rcu_read_lock(); chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); @@ -3135,7 +3135,7 @@ void ieee80211_check_fast_xmit(struct st fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS); /* DA BSSID SA */ build.da_offs = offsetof(struct ieee80211_hdr, addr1); - if (sta->sta.mlo || !sdata->vif.valid_links) { + if (sta->sta.mlo || !ieee80211_vif_is_mld(&sdata->vif)) { memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN); } else { unsigned int link_id = sta->deflink.link_id; @@ -4507,7 +4507,7 @@ netdev_tx_t ieee80211_subif_start_xmit(s __ieee80211_subif_start_xmit(skb, dev, 0, IEEE80211_TX_CTRL_MLO_LINK_UNSPEC, NULL); - } else if (sdata->vif.valid_links && + } else if (ieee80211_vif_is_mld(&sdata->vif) && sdata->vif.type == NL80211_IFTYPE_AP && !ieee80211_hw_check(&sdata->local->hw, MLO_MCAST_MULTI_LINK_TX)) { ieee80211_mlo_multicast_tx(dev, skb); @@ -4785,7 +4785,7 @@ static bool ieee80211_tx_pending_skb(str if (info->control.flags & IEEE80211_TX_INTCFL_NEED_TXPROCESSING) { /* update band only for non-MLD */ - if (!sdata->vif.valid_links) { + if (!ieee80211_vif_is_mld(&sdata->vif)) { chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); if (unlikely(!chanctx_conf)) { @@ -6008,7 +6008,7 @@ void __ieee80211_tx_skb_tid_band(struct BUILD_BUG_ON(!FIELD_FIT(IEEE80211_TX_CTRL_MLO_LINK, IEEE80211_LINK_UNSPECIFIED)); - if (!sdata->vif.valid_links) { + if (!ieee80211_vif_is_mld(&sdata->vif)) { link = 0; } else if (link_id >= 0) { link = link_id; @@ -6054,7 +6054,7 @@ void ieee80211_tx_skb_tid(struct ieee802 enum nl80211_band band; rcu_read_lock(); - if (!sdata->vif.valid_links) { + if (!ieee80211_vif_is_mld(&sdata->vif)) { WARN_ON(link_id >= 0); chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1701,7 +1701,7 @@ void ieee80211_send_auth(struct ieee8021 struct ieee80211_local *local = sdata->local; struct sk_buff *skb; struct ieee80211_mgmt *mgmt; - bool multi_link = sdata->vif.valid_links; + bool multi_link = ieee80211_vif_is_mld(&sdata->vif); struct { u8 id; u8 len; @@ -2542,7 +2542,7 @@ int ieee80211_reconfig(struct ieee80211_ continue; sdata_lock(sdata); - if (sdata->vif.valid_links) { + if (ieee80211_vif_is_mld(&sdata->vif)) { struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS] = { [0] = &sdata->vif.bss_conf, }; @@ -2562,7 +2562,7 @@ int ieee80211_reconfig(struct ieee80211_ for (link_id = 0; link_id < ARRAY_SIZE(sdata->vif.link_conf); link_id++) { - if (sdata->vif.valid_links && + if (ieee80211_vif_is_mld(&sdata->vif) && !(sdata->vif.active_links & BIT(link_id))) continue; @@ -2594,12 +2594,12 @@ int ieee80211_reconfig(struct ieee80211_ if (sdata->vif.bss_conf.mu_mimo_owner) changed |= BSS_CHANGED_MU_GROUPS; - if (!sdata->vif.valid_links) + if (!ieee80211_vif_is_mld(&sdata->vif)) changed |= BSS_CHANGED_IDLE; switch (sdata->vif.type) { case NL80211_IFTYPE_STATION: - if (!sdata->vif.valid_links) { + if (!ieee80211_vif_is_mld(&sdata->vif)) { changed |= BSS_CHANGED_ASSOC | BSS_CHANGED_ARP_FILTER | BSS_CHANGED_PS; @@ -2637,7 +2637,7 @@ int ieee80211_reconfig(struct ieee80211_ case NL80211_IFTYPE_AP: changed |= BSS_CHANGED_P2P_PS; - if (sdata->vif.valid_links) + if (ieee80211_vif_is_mld(&sdata->vif)) ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_SSID); else @@ -2651,7 +2651,7 @@ int ieee80211_reconfig(struct ieee80211_ if (sdata->vif.type == NL80211_IFTYPE_AP) { changed |= BSS_CHANGED_AP_PROBE_RESP; - if (sdata->vif.valid_links) { + if (ieee80211_vif_is_mld(&sdata->vif)) { ieee80211_reconfig_ap_links(local, sdata, changed);