diff options
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/cfg.c | 3 | ||||
| -rw-r--r-- | net/mac80211/debugfs_netdev.c | 61 | ||||
| -rw-r--r-- | net/mac80211/ht.c | 5 | ||||
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 2 | ||||
| -rw-r--r-- | net/mac80211/main.c | 22 | ||||
| -rw-r--r-- | net/mac80211/mesh.c | 1 | ||||
| -rw-r--r-- | net/mac80211/mesh_plink.c | 1 | ||||
| -rw-r--r-- | net/mac80211/rx.c | 40 | ||||
| -rw-r--r-- | net/mac80211/sta_info.c | 238 | ||||
| -rw-r--r-- | net/mac80211/trace.h | 27 | ||||
| -rw-r--r-- | net/mac80211/tx.c | 2 | ||||
| -rw-r--r-- | net/mac80211/util.c | 41 | ||||
| -rw-r--r-- | net/mac80211/wpa.c | 2 |
13 files changed, 295 insertions, 150 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 09d2e58a2ba7..f9ae9b85d4c1 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1035,6 +1035,7 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, return err; } + ieee80211_recalc_dtim(local, sdata); ieee80211_bss_info_change_notify(sdata, changed); netif_carrier_on(dev); @@ -3854,7 +3855,7 @@ static int ieee80211_set_qos_map(struct wiphy *wiphy, new_qos_map = NULL; } - old_qos_map = rtnl_dereference(sdata->qos_map); + old_qos_map = sdata_dereference(sdata->qos_map, sdata); rcu_assign_pointer(sdata->qos_map, new_qos_map); if (old_qos_map) kfree_rcu(old_qos_map, rcu_head); diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c index 04b5a14c8a05..ebf80f3abd83 100644 --- a/net/mac80211/debugfs_netdev.c +++ b/net/mac80211/debugfs_netdev.c @@ -133,7 +133,15 @@ static ssize_t ieee80211_if_fmt_##name( \ jiffies_to_msecs(sdata->field)); \ } -#define __IEEE80211_IF_FILE(name, _write) \ +#define _IEEE80211_IF_FILE_OPS(name, _read, _write) \ +static const struct file_operations name##_ops = { \ + .read = (_read), \ + .write = (_write), \ + .open = simple_open, \ + .llseek = generic_file_llseek, \ +} + +#define _IEEE80211_IF_FILE_R_FN(name) \ static ssize_t ieee80211_if_read_##name(struct file *file, \ char __user *userbuf, \ size_t count, loff_t *ppos) \ @@ -141,28 +149,34 @@ static ssize_t ieee80211_if_read_##name(struct file *file, \ return ieee80211_if_read(file->private_data, \ userbuf, count, ppos, \ ieee80211_if_fmt_##name); \ -} \ -static const struct file_operations name##_ops = { \ - .read = ieee80211_if_read_##name, \ - .write = (_write), \ - .open = simple_open, \ - .llseek = generic_file_llseek, \ } -#define __IEEE80211_IF_FILE_W(name) \ +#define _IEEE80211_IF_FILE_W_FN(name) \ static ssize_t ieee80211_if_write_##name(struct file *file, \ const char __user *userbuf, \ size_t count, loff_t *ppos) \ { \ return ieee80211_if_write(file->private_data, userbuf, count, \ ppos, ieee80211_if_parse_##name); \ -} \ -__IEEE80211_IF_FILE(name, ieee80211_if_write_##name) +} + +#define IEEE80211_IF_FILE_R(name) \ + _IEEE80211_IF_FILE_R_FN(name) \ + _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, NULL) + +#define IEEE80211_IF_FILE_W(name) \ + _IEEE80211_IF_FILE_W_FN(name) \ + _IEEE80211_IF_FILE_OPS(name, NULL, ieee80211_if_write_##name) +#define IEEE80211_IF_FILE_RW(name) \ + _IEEE80211_IF_FILE_R_FN(name) \ + _IEEE80211_IF_FILE_W_FN(name) \ + _IEEE80211_IF_FILE_OPS(name, ieee80211_if_read_##name, \ + ieee80211_if_write_##name) #define IEEE80211_IF_FILE(name, field, format) \ - IEEE80211_IF_FMT_##format(name, field) \ - __IEEE80211_IF_FILE(name, NULL) + IEEE80211_IF_FMT_##format(name, field) \ + IEEE80211_IF_FILE_R(name) /* common attributes */ IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC); @@ -199,7 +213,7 @@ ieee80211_if_fmt_hw_queues(const struct ieee80211_sub_if_data *sdata, return len; } -__IEEE80211_IF_FILE(hw_queues, NULL); +IEEE80211_IF_FILE_R(hw_queues); /* STA attributes */ IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC); @@ -275,14 +289,7 @@ static ssize_t ieee80211_if_parse_smps(struct ieee80211_sub_if_data *sdata, return -EINVAL; } - -__IEEE80211_IF_FILE_W(smps); - -static ssize_t ieee80211_if_fmt_tkip_mic_test( - const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) -{ - return -EOPNOTSUPP; -} +IEEE80211_IF_FILE_RW(smps); static ssize_t ieee80211_if_parse_tkip_mic_test( struct ieee80211_sub_if_data *sdata, const char *buf, int buflen) @@ -349,8 +356,7 @@ static ssize_t ieee80211_if_parse_tkip_mic_test( return buflen; } - -__IEEE80211_IF_FILE_W(tkip_mic_test); +IEEE80211_IF_FILE_W(tkip_mic_test); static ssize_t ieee80211_if_fmt_uapsd_queues( const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) @@ -378,7 +384,7 @@ static ssize_t ieee80211_if_parse_uapsd_queues( return buflen; } -__IEEE80211_IF_FILE_W(uapsd_queues); +IEEE80211_IF_FILE_RW(uapsd_queues); static ssize_t ieee80211_if_fmt_uapsd_max_sp_len( const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) @@ -406,7 +412,7 @@ static ssize_t ieee80211_if_parse_uapsd_max_sp_len( return buflen; } -__IEEE80211_IF_FILE_W(uapsd_max_sp_len); +IEEE80211_IF_FILE_RW(uapsd_max_sp_len); /* AP attributes */ IEEE80211_IF_FILE(num_mcast_sta, u.ap.num_mcast_sta, ATOMIC); @@ -419,7 +425,7 @@ static ssize_t ieee80211_if_fmt_num_buffered_multicast( return scnprintf(buf, buflen, "%u\n", skb_queue_len(&sdata->u.ap.ps.bc_buf)); } -__IEEE80211_IF_FILE(num_buffered_multicast, NULL); +IEEE80211_IF_FILE_R(num_buffered_multicast); /* IBSS attributes */ static ssize_t ieee80211_if_fmt_tsf( @@ -468,9 +474,10 @@ static ssize_t ieee80211_if_parse_tsf( } } + ieee80211_recalc_dtim(local, sdata); return buflen; } -__IEEE80211_IF_FILE_W(tsf); +IEEE80211_IF_FILE_RW(tsf); /* WDS attributes */ diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c index 9a8be8f69224..fab7b91923e0 100644 --- a/net/mac80211/ht.c +++ b/net/mac80211/ht.c @@ -479,10 +479,9 @@ void ieee80211_request_smps(struct ieee80211_vif *vif, vif->type != NL80211_IFTYPE_AP)) return; - if (WARN_ON(smps_mode == IEEE80211_SMPS_OFF)) - smps_mode = IEEE80211_SMPS_AUTOMATIC; - if (vif->type == NL80211_IFTYPE_STATION) { + if (WARN_ON(smps_mode == IEEE80211_SMPS_OFF)) + smps_mode = IEEE80211_SMPS_AUTOMATIC; if (sdata->u.mgd.driver_smps_mode == smps_mode) return; sdata->u.mgd.driver_smps_mode = smps_mode; diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 953b9e294547..3701930c6649 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1800,6 +1800,8 @@ ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, int ieee80211_cs_headroom(struct ieee80211_local *local, struct cfg80211_crypto_settings *crypto, enum nl80211_iftype iftype); +void ieee80211_recalc_dtim(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata); #ifdef CONFIG_MAC80211_NOINLINE #define debug_noinline noinline diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 2bd5b552b2f6..d767cfb9b45f 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -846,17 +846,6 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) /* TODO: consider VHT for RX chains, hopefully it's the same */ } - local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + - sizeof(void *) * channels, GFP_KERNEL); - if (!local->int_scan_req) - return -ENOMEM; - - for (band = 0; band < IEEE80211_NUM_BANDS; band++) { - if (!local->hw.wiphy->bands[band]) - continue; - local->int_scan_req->rates[band] = (u32) -1; - } - /* if low-level driver supports AP, we also support VLAN */ if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) { hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP_VLAN); @@ -880,6 +869,17 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) return -EINVAL; } + local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + + sizeof(void *) * channels, GFP_KERNEL); + if (!local->int_scan_req) + return -ENOMEM; + + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + if (!local->hw.wiphy->bands[band]) + continue; + local->int_scan_req->rates[band] = (u32) -1; + } + #ifndef CONFIG_MAC80211_MESH /* mesh depends on Kconfig, but drivers should set it if they want */ local->hw.wiphy->interface_modes &= ~BIT(NL80211_IFTYPE_MESH_POINT); diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index 5a74b249ba35..5b919cab1de0 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -807,6 +807,7 @@ int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata) return -ENOMEM; } + ieee80211_recalc_dtim(local, sdata); ieee80211_bss_info_change_notify(sdata, changed); netif_carrier_on(sdata->dev); diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c index cf83217103f9..e8f60aa2e848 100644 --- a/net/mac80211/mesh_plink.c +++ b/net/mac80211/mesh_plink.c @@ -437,6 +437,7 @@ __mesh_sta_info_alloc(struct ieee80211_sub_if_data *sdata, u8 *hw_addr) sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); set_sta_flag(sta, WLAN_STA_WME); + sta->sta.wme = true; return sta; } diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 5a2afe9583a8..c24ca0d0f469 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -3076,8 +3076,8 @@ void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid) /* main receive path */ -static int prepare_for_handlers(struct ieee80211_rx_data *rx, - struct ieee80211_hdr *hdr) +static bool prepare_for_handlers(struct ieee80211_rx_data *rx, + struct ieee80211_hdr *hdr) { struct ieee80211_sub_if_data *sdata = rx->sdata; struct sk_buff *skb = rx->skb; @@ -3088,29 +3088,29 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx, switch (sdata->vif.type) { case NL80211_IFTYPE_STATION: if (!bssid && !sdata->u.mgd.use_4addr) - return 0; + return false; if (!multicast && !ether_addr_equal(sdata->vif.addr, hdr->addr1)) { if (!(sdata->dev->flags & IFF_PROMISC) || sdata->u.mgd.use_4addr) - return 0; + return false; status->rx_flags &= ~IEEE80211_RX_RA_MATCH; } break; case NL80211_IFTYPE_ADHOC: if (!bssid) - return 0; + return false; if (ether_addr_equal(sdata->vif.addr, hdr->addr2) || ether_addr_equal(sdata->u.ibss.bssid, hdr->addr2)) - return 0; + return false; if (ieee80211_is_beacon(hdr->frame_control)) { - return 1; + return true; } else if (!ieee80211_bssid_match(bssid, sdata->u.ibss.bssid)) { - return 0; + return false; } else if (!multicast && !ether_addr_equal(sdata->vif.addr, hdr->addr1)) { if (!(sdata->dev->flags & IFF_PROMISC)) - return 0; + return false; status->rx_flags &= ~IEEE80211_RX_RA_MATCH; } else if (!rx->sta) { int rate_idx; @@ -3126,7 +3126,7 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx, if (!multicast && !ether_addr_equal(sdata->vif.addr, hdr->addr1)) { if (!(sdata->dev->flags & IFF_PROMISC)) - return 0; + return false; status->rx_flags &= ~IEEE80211_RX_RA_MATCH; } @@ -3135,7 +3135,7 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx, case NL80211_IFTYPE_AP: if (!bssid) { if (!ether_addr_equal(sdata->vif.addr, hdr->addr1)) - return 0; + return false; } else if (!ieee80211_bssid_match(bssid, sdata->vif.addr)) { /* * Accept public action frames even when the @@ -3145,26 +3145,26 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx, */ if (!multicast && !ether_addr_equal(sdata->vif.addr, hdr->addr1)) - return 0; + return false; if (ieee80211_is_public_action(hdr, skb->len)) - return 1; + return true; if (!ieee80211_is_beacon(hdr->frame_control)) - return 0; + return false; status->rx_flags &= ~IEEE80211_RX_RA_MATCH; } break; case NL80211_IFTYPE_WDS: if (bssid || !ieee80211_is_data(hdr->frame_control)) - return 0; + return false; if (!ether_addr_equal(sdata->u.wds.remote_addr, hdr->addr2)) - return 0; + return false; break; case NL80211_IFTYPE_P2P_DEVICE: if (!ieee80211_is_public_action(hdr, skb->len) && !ieee80211_is_probe_req(hdr->frame_control) && !ieee80211_is_probe_resp(hdr->frame_control) && !ieee80211_is_beacon(hdr->frame_control)) - return 0; + return false; if (!ether_addr_equal(sdata->vif.addr, hdr->addr1) && !multicast) status->rx_flags &= ~IEEE80211_RX_RA_MATCH; @@ -3175,7 +3175,7 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx, break; } - return 1; + return true; } /* @@ -3191,13 +3191,11 @@ static bool ieee80211_prepare_and_rx_handle(struct ieee80211_rx_data *rx, struct ieee80211_sub_if_data *sdata = rx->sdata; struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb); struct ieee80211_hdr *hdr = (void *)skb->data; - int prepares; rx->skb = skb; status->rx_flags |= IEEE80211_RX_RA_MATCH; - prepares = prepare_for_handlers(rx, hdr); - if (!prepares) + if (!prepare_for_handlers(rx, hdr)) return false; if (!consume) { diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index 4576ba0ff221..decd30c1e290 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -300,6 +300,35 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, if (!sta) return NULL; + rcu_read_lock(); + tx_latency = rcu_dereference(local->tx_latency); + /* init stations Tx latency statistics && TID bins */ + if (tx_latency) { + sta->tx_lat = kzalloc(IEEE80211_NUM_TIDS * + sizeof(struct ieee80211_tx_latency_stat), + GFP_ATOMIC); + if (!sta->tx_lat) { + rcu_read_unlock(); + goto free; + } + + if (tx_latency->n_ranges) { + for (i = 0; i < IEEE80211_NUM_TIDS; i++) { + /* size of bins is size of the ranges +1 */ + sta->tx_lat[i].bin_count = + tx_latency->n_ranges + 1; + sta->tx_lat[i].bins = + kcalloc(sta->tx_lat[i].bin_count, + sizeof(u32), GFP_ATOMIC); + if (!sta->tx_lat[i].bins) { + rcu_read_unlock(); + goto free; + } + } + } + } + rcu_read_unlock(); + spin_lock_init(&sta->lock); INIT_WORK(&sta->drv_unblock_wk, sta_unblock); INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work); @@ -324,10 +353,8 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, for (i = 0; i < ARRAY_SIZE(sta->chain_signal_avg); i++) ewma_init(&sta->chain_signal_avg[i], 1024, 8); - if (sta_prepare_rate_control(local, sta, gfp)) { - kfree(sta); - return NULL; - } + if (sta_prepare_rate_control(local, sta, gfp)) + goto free; for (i = 0; i < IEEE80211_NUM_TIDS; i++) { /* @@ -371,34 +398,17 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, } } - rcu_read_lock(); - - tx_latency = rcu_dereference(local->tx_latency); - /* init stations Tx latency statistics && TID bins */ - if (tx_latency) - sta->tx_lat = kzalloc(IEEE80211_NUM_TIDS * - sizeof(struct ieee80211_tx_latency_stat), - GFP_ATOMIC); - - /* - * if Tx latency and bins are enabled and the previous allocation - * succeeded - */ - if (tx_latency && tx_latency->n_ranges && sta->tx_lat) - for (i = 0; i < IEEE80211_NUM_TIDS; i++) { - /* size of bins is size of the ranges +1 */ - sta->tx_lat[i].bin_count = - tx_latency->n_ranges + 1; - sta->tx_lat[i].bins = kcalloc(sta->tx_lat[i].bin_count, - sizeof(u32), - GFP_ATOMIC); - } - - rcu_read_unlock(); - sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr); - return sta; + +free: + if (sta->tx_lat) { + for (i = 0; i < IEEE80211_NUM_TIDS; i++) + kfree(sta->tx_lat[i].bins); + kfree(sta->tx_lat); + } + kfree(sta); + return NULL; } static int sta_info_insert_check(struct sta_info *sta) @@ -1143,7 +1153,8 @@ void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata, struct sta_info *sta, int tid, - enum ieee80211_frame_release_type reason) + enum ieee80211_frame_release_type reason, + bool call_driver) { struct ieee80211_local *local = sdata->local; struct ieee80211_qos_hdr *nullfunc; @@ -1201,7 +1212,9 @@ static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata, IEEE80211_TX_STATUS_EOSP | IEEE80211_TX_CTL_REQ_TX_STATUS; - drv_allow_buffered_frames(local, sta, BIT(tid), 1, reason, false); + if (call_driver) + drv_allow_buffered_frames(local, sta, BIT(tid), 1, + reason, false); skb->dev = sdata->dev; @@ -1217,6 +1230,17 @@ static void ieee80211_send_null_response(struct ieee80211_sub_if_data *sdata, rcu_read_unlock(); } +static int find_highest_prio_tid(unsigned long tids) +{ + /* lower 3 TIDs aren't ordered perfectly */ + if (tids & 0xF8) + return fls(tids) - 1; + /* TID 0 is BE just like TID 3 */ + if (tids & BIT(0)) + return 0; + return fls(tids) - 1; +} + static void ieee80211_sta_ps_deliver_response(struct sta_info *sta, int n_frames, u8 ignored_acs, @@ -1224,7 +1248,6 @@ ieee80211_sta_ps_deliver_response(struct sta_info *sta, { struct ieee80211_sub_if_data *sdata = sta->sdata; struct ieee80211_local *local = sdata->local; - bool found = false; bool more_data = false; int ac; unsigned long driver_release_tids = 0; @@ -1235,9 +1258,7 @@ ieee80211_sta_ps_deliver_response(struct sta_info *sta, __skb_queue_head_init(&frames); - /* - * Get response frame(s) and more data bit for it. - */ + /* Get response frame(s) and more data bit for the last one. */ for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { unsigned long tids; @@ -1246,43 +1267,48 @@ ieee80211_sta_ps_deliver_response(struct sta_info *sta, tids = ieee80211_tids_for_ac(ac); - if (!found) { - driver_release_tids = sta->driver_buffered_tids & tids; - if (driver_release_tids) { - found = true; - } else { - struct sk_buff *skb; - - while (n_frames > 0) { - skb = skb_dequeue(&sta->tx_filtered[ac]); - if (!skb) { - skb = skb_dequeue( - &sta->ps_tx_buf[ac]); - if (skb) - local->total_ps_buffered--; - } - if (!skb) - break; - n_frames--; - found = true; - __skb_queue_tail(&frames, skb); - } - } + /* if we already have frames from software, then we can't also + * release from hardware queues + */ + if (skb_queue_empty(&frames)) + driver_release_tids |= sta->driver_buffered_tids & tids; - /* - * If the driver has data on more than one TID then + if (driver_release_tids) { + /* If the driver has data on more than one TID then * certainly there's more data if we release just a - * single frame now (from a single TID). + * single frame now (from a single TID). This will + * only happen for PS-Poll. */ if (reason == IEEE80211_FRAME_RELEASE_PSPOLL && hweight16(driver_release_tids) > 1) { more_data = true; driver_release_tids = - BIT(ffs(driver_release_tids) - 1); + BIT(find_highest_prio_tid( + driver_release_tids)); break; } + } else { + struct sk_buff *skb; + + while (n_frames > 0) { + skb = skb_dequeue(&sta->tx_filtered[ac]); + if (!skb) { + skb = skb_dequeue( + &sta->ps_tx_buf[ac]); + if (skb) + local->total_ps_buffered--; + } + if (!skb) + break; + n_frames--; + __skb_queue_tail(&frames, skb); + } } + /* If we have more frames buffered on this AC, then set the + * more-data bit and abort the loop since we can't send more + * data from other ACs before the buffered frames from this. + */ if (!skb_queue_empty(&sta->tx_filtered[ac]) || !skb_queue_empty(&sta->ps_tx_buf[ac])) { more_data = true; @@ -1290,7 +1316,7 @@ ieee80211_sta_ps_deliver_response(struct sta_info *sta, } } - if (!found) { + if (skb_queue_empty(&frames) && !driver_release_tids) { int tid; /* @@ -1311,15 +1337,13 @@ ieee80211_sta_ps_deliver_response(struct sta_info *sta, /* This will evaluate to 1, 3, 5 or 7. */ tid = 7 - ((ffs(~ignored_acs) - 1) << 1); - ieee80211_send_null_response(sdata, sta, tid, reason); - return; - } - - if (!driver_release_tids) { + ieee80211_send_null_response(sdata, sta, tid, reason, true); + } else if (!driver_release_tids) { struct sk_buff_head pending; struct sk_buff *skb; int num = 0; u16 tids = 0; + bool need_null = false; skb_queue_head_init(&pending); @@ -1353,22 +1377,57 @@ ieee80211_sta_ps_deliver_response(struct sta_info *sta, ieee80211_is_qos_nullfunc(hdr->frame_control)) qoshdr = ieee80211_get_qos_ctl(hdr); - /* end service period after last frame */ - if (skb_queue_empty(&frames)) { - if (reason == IEEE80211_FRAME_RELEASE_UAPSD && - qoshdr) - *qoshdr |= IEEE80211_QOS_CTL_EOSP; + tids |= BIT(skb->priority); + + __skb_queue_tail(&pending, skb); + + /* end service period after last frame or add one */ + if (!skb_queue_empty(&frames)) + continue; + if (reason != IEEE80211_FRAME_RELEASE_UAPSD) { + /* for PS-Poll, there's only one frame */ info->flags |= IEEE80211_TX_STATUS_EOSP | IEEE80211_TX_CTL_REQ_TX_STATUS; + break; } - if (qoshdr) - tids |= BIT(*qoshdr & IEEE80211_QOS_CTL_TID_MASK); - else - tids |= BIT(0); + /* For uAPSD, things are a bit more complicated. If the + * last frame has a QoS header (i.e. is a QoS-data or + * QoS-nulldata frame) then just set the EOSP bit there + * and be done. + * If the frame doesn't have a QoS header (which means + * it should be a bufferable MMPDU) then we can't set + * the EOSP bit in the QoS header; add a QoS-nulldata + * frame to the list to send it after the MMPDU. + * + * Note that this code is only in the mac80211-release + * code path, we assume that the driver will not buffer + * anything but QoS-data frames, or if it does, will + * create the QoS-nulldata frame by itself if needed. + * + * Cf. 802.11-2012 10.2.1.10 (c). + */ + if (qoshdr) { + *qoshdr |= IEEE80211_QOS_CTL_EOSP; - __skb_queue_tail(&pending, skb); + info->flags |= IEEE80211_TX_STATUS_EOSP | + IEEE80211_TX_CTL_REQ_TX_STATUS; + } else { + /* The standard isn't completely clear on this + * as it says the more-data bit should be set + * if there are more BUs. The QoS-Null frame + * we're about to send isn't buffered yet, we + * only create it below, but let's pretend it + * was buffered just in case some clients only + * expect more-data=0 when eosp=1. + */ + hdr->frame_control |= + cpu_to_le16(IEEE80211_FCTL_MOREDATA); + need_null = true; + num++; + } + break; } drv_allow_buffered_frames(local, sta, tids, num, @@ -1376,17 +1435,22 @@ ieee80211_sta_ps_deliver_response(struct sta_info *sta, ieee80211_add_pending_skbs(local, &pending); + if (need_null) + ieee80211_send_null_response( + sdata, sta, find_highest_prio_tid(tids), + reason, false); + sta_info_recalc_tim(sta); } else { /* * We need to release a frame that is buffered somewhere in the * driver ... it'll have to handle that. - * Note that, as per the comment above, it'll also have to see - * if there is more than just one frame on the specific TID that - * we're releasing from, and it needs to set the more-data bit - * accordingly if we tell it that there's no more data. If we do - * tell it there's more data, then of course the more-data bit - * needs to be set anyway. + * Note that the driver also has to check the number of frames + * on the TIDs we're releasing from - if there are more than + * n_frames it has to set the more-data bit (if we didn't ask + * it to set it anyway due to other buffered frames); if there + * are fewer than n_frames it has to make sure to adjust that + * to allow the service period to end properly. */ drv_release_buffered_frames(local, sta, driver_release_tids, n_frames, reason, more_data); @@ -1394,9 +1458,9 @@ ieee80211_sta_ps_deliver_response(struct sta_info *sta, /* * Note that we don't recalculate the TIM bit here as it would * most likely have no effect at all unless the driver told us - * that the TID became empty before returning here from the + * that the TID(s) became empty before returning here from the * release function. - * Either way, however, when the driver tells us that the TID + * Either way, however, when the driver tells us that the TID(s) * became empty we'll do the TIM recalculation. */ } @@ -1485,6 +1549,8 @@ void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta, if (WARN_ON(tid >= IEEE80211_NUM_TIDS)) return; + trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered); + if (buffered) set_bit(tid, &sta->driver_buffered_tids); else diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h index da9366632f37..a0b0aea76525 100644 --- a/net/mac80211/trace.h +++ b/net/mac80211/trace.h @@ -1835,6 +1835,33 @@ TRACE_EVENT(api_eosp, ) ); +TRACE_EVENT(api_sta_set_buffered, + TP_PROTO(struct ieee80211_local *local, + struct ieee80211_sta *sta, + u8 tid, bool buffered), + + TP_ARGS(local, sta, tid, buffered), + + TP_STRUCT__entry( + LOCAL_ENTRY + STA_ENTRY + __field(u8, tid) + __field(bool, buffered) + ), + + TP_fast_assign( + LOCAL_ASSIGN; + STA_ASSIGN; + __entry->tid = tid; + __entry->buffered = buffered; + ), + + TP_printk( + LOCAL_PR_FMT STA_PR_FMT " tid:%d buffered:%d", + LOCAL_PR_ARG, STA_PR_ARG, __entry->tid, __entry->buffered + ) +); + /* * Tracing for internal functions * (which may also be called in response to driver calls) diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index ef3555e16cf9..27c990bf2320 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -490,6 +490,7 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx) info->control.jiffies = jiffies; info->control.vif = &tx->sdata->vif; info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING; + info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS; skb_queue_tail(&sta->ps_tx_buf[ac], tx->skb); if (!timer_pending(&local->sta_cleanup)) @@ -1076,6 +1077,7 @@ static bool ieee80211_tx_prep_agg(struct ieee80211_tx_data *tx, queued = true; info->control.vif = &tx->sdata->vif; info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING; + info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS; __skb_queue_tail(&tid_tx->pending, skb); if (skb_queue_len(&tid_tx->pending) > STA_MAX_TX_BUFFER) purge_skb = __skb_dequeue(&tid_tx->pending); diff --git a/net/mac80211/util.c b/net/mac80211/util.c index df00f1978a77..676dc0967f37 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -2734,3 +2734,44 @@ int ieee80211_parse_p2p_noa(const struct ieee80211_p2p_noa_attr *attr, return ret; } EXPORT_SYMBOL(ieee80211_parse_p2p_noa); + +void ieee80211_recalc_dtim(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata) +{ + u64 tsf = drv_get_tsf(local, sdata); + u64 dtim_count = 0; + u16 beacon_int = sdata->vif.bss_conf.beacon_int * 1024; + u8 dtim_period = sdata->vif.bss_conf.dtim_period; + struct ps_data *ps; + u8 bcns_from_dtim; + + if (tsf == -1ULL || !beacon_int || !dtim_period) + return; + + if (sdata->vif.type == NL80211_IFTYPE_AP || + sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { + if (!sdata->bss) + return; + + ps = &sdata->bss->ps; + } else if (ieee80211_vif_is_mesh(&sdata->vif)) { + ps = &sdata->u.mesh.ps; + } else { + return; + } + + /* + * actually finds last dtim_count, mac80211 will update in + * __beacon_add_tim(). + * dtim_count = dtim_period - (tsf / bcn_int) % dtim_period + */ + do_div(tsf, beacon_int); + bcns_from_dtim = do_div(tsf, dtim_period); + /* just had a DTIM */ + if (!bcns_from_dtim) + dtim_count = 0; + else + dtim_count = dtim_period - bcns_from_dtim; + + ps->dtim_count = dtim_count; +} diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c index 7313d379c0d3..21448d629b15 100644 --- a/net/mac80211/wpa.c +++ b/net/mac80211/wpa.c @@ -127,7 +127,7 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx) * APs with pairwise keys should never receive Michael MIC * errors for non-zero keyidx because these are reserved for * group keys and only the AP is sending real multicast - * frames in the BSS. ( + * frames in the BSS. */ return RX_DROP_UNUSABLE; } |