diff options
Diffstat (limited to 'net/mac80211/rx.c')
| -rw-r--r-- | net/mac80211/rx.c | 654 |
1 files changed, 426 insertions, 228 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 10e88423ff4..6202d050412 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -16,8 +16,10 @@ #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/rcupdate.h> +#include <linux/export.h> #include <net/mac80211.h> #include <net/ieee80211_radiotap.h> +#include <asm/unaligned.h> #include "ieee80211_i.h" #include "driver-ops.h" @@ -27,6 +29,7 @@ #include "wpa.h" #include "tkip.h" #include "wme.h" +#include "rate.h" /* * monitor mode reception @@ -100,7 +103,7 @@ static void ieee80211_add_rx_radiotap_header(struct ieee80211_local *local, struct sk_buff *skb, struct ieee80211_rate *rate, - int rtap_len) + int rtap_len, bool has_fcs) { struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb); struct ieee80211_radiotap_header *rthdr; @@ -131,7 +134,7 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local, } /* IEEE80211_RADIOTAP_FLAGS */ - if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS) + if (has_fcs && (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)) *pos |= IEEE80211_RADIOTAP_F_FCS; if (status->flag & (RX_FLAG_FAILED_FCS_CRC | RX_FLAG_FAILED_PLCP_CRC)) *pos |= IEEE80211_RADIOTAP_F_BADFCS; @@ -174,7 +177,8 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local, pos += 2; /* IEEE80211_RADIOTAP_DBM_ANTSIGNAL */ - if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) { + if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM && + !(status->flag & RX_FLAG_NO_SIGNAL_VAL)) { *pos = status->signal; rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL); @@ -224,7 +228,7 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb, { struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(origskb); struct ieee80211_sub_if_data *sdata; - int needed_headroom = 0; + int needed_headroom; struct sk_buff *skb, *skb2; struct net_device *prev_dev = NULL; int present_fcs_len = 0; @@ -290,7 +294,8 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb, } /* prepend radiotap information */ - ieee80211_add_rx_radiotap_header(local, skb, rate, needed_headroom); + ieee80211_add_rx_radiotap_header(local, skb, rate, needed_headroom, + true); skb_reset_mac_header(skb); skb->ip_summed = CHECKSUM_UNNECESSARY; @@ -334,15 +339,18 @@ static void ieee80211_parse_qos(struct ieee80211_rx_data *rx) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data; struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb); - int tid; + int tid, seqno_idx, security_idx; /* does the frame have a qos control field? */ if (ieee80211_is_data_qos(hdr->frame_control)) { u8 *qc = ieee80211_get_qos_ctl(hdr); /* frame has qos control */ tid = *qc & IEEE80211_QOS_CTL_TID_MASK; - if (*qc & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT) + if (*qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT) status->rx_flags |= IEEE80211_RX_AMSDU; + + seqno_idx = tid; + security_idx = tid; } else { /* * IEEE 802.11-2007, 7.1.3.4.1 ("Sequence Number field"): @@ -355,10 +363,15 @@ static void ieee80211_parse_qos(struct ieee80211_rx_data *rx) * * We also use that counter for non-QoS STAs. */ - tid = NUM_RX_DATA_QUEUES - 1; + seqno_idx = NUM_RX_DATA_QUEUES; + security_idx = 0; + if (ieee80211_is_mgmt(hdr->frame_control)) + security_idx = NUM_RX_DATA_QUEUES; + tid = 0; } - rx->queue = tid; + rx->seqno_idx = seqno_idx; + rx->security_idx = security_idx; /* Set skb->priority to 1d tag if highest order bit of TID is not set. * For now, set skb->priority to 0 for other cases. */ rx->skb->priority = (tid > 7) ? 0 : tid; @@ -471,7 +484,6 @@ static ieee80211_rx_result ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data; - unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control); char *dev_addr = rx->sdata->vif.addr; if (ieee80211_is_data(hdr->frame_control)) { @@ -479,12 +491,12 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx) if (ieee80211_has_tods(hdr->frame_control) || !ieee80211_has_fromds(hdr->frame_control)) return RX_DROP_MONITOR; - if (memcmp(hdr->addr3, dev_addr, ETH_ALEN) == 0) + if (compare_ether_addr(hdr->addr3, dev_addr) == 0) return RX_DROP_MONITOR; } else { if (!ieee80211_has_a4(hdr->frame_control)) return RX_DROP_MONITOR; - if (memcmp(hdr->addr4, dev_addr, ETH_ALEN) == 0) + if (compare_ether_addr(hdr->addr4, dev_addr) == 0) return RX_DROP_MONITOR; } } @@ -501,6 +513,11 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx) if (ieee80211_is_action(hdr->frame_control)) { u8 category; + + /* make sure category field is present */ + if (rx->skb->len < IEEE80211_MIN_ACTION_SIZE) + return RX_DROP_MONITOR; + mgmt = (struct ieee80211_mgmt *)hdr; category = mgmt->u.action.category; if (category != WLAN_CATEGORY_MESH_ACTION && @@ -519,14 +536,6 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx) } -#define msh_h_get(h, l) ((struct ieee80211s_hdr *) ((u8 *)h + l)) - - if (ieee80211_is_data(hdr->frame_control) && - is_multicast_ether_addr(hdr->addr1) && - mesh_rmc_check(hdr->addr3, msh_h_get(hdr, hdrlen), rx->sdata)) - return RX_DROP_MONITOR; -#undef msh_h_get - return RX_CONTINUE; } @@ -659,9 +668,10 @@ static void ieee80211_sta_reorder_release(struct ieee80211_hw *hw, set_release_timer: - mod_timer(&tid_agg_rx->reorder_timer, - tid_agg_rx->reorder_time[j] + 1 + - HT_RX_REORDER_BUF_TIMEOUT); + if (!tid_agg_rx->removed) + mod_timer(&tid_agg_rx->reorder_timer, + tid_agg_rx->reorder_time[j] + 1 + + HT_RX_REORDER_BUF_TIMEOUT); } else { del_timer(&tid_agg_rx->reorder_timer); } @@ -748,12 +758,14 @@ static void ieee80211_rx_reorder_ampdu(struct ieee80211_rx_data *rx) struct ieee80211_local *local = rx->local; struct ieee80211_hw *hw = &local->hw; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; + struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb); struct sta_info *sta = rx->sta; struct tid_ampdu_rx *tid_agg_rx; u16 sc; - int tid; + u8 tid, ack_policy; - if (!ieee80211_is_data_qos(hdr->frame_control)) + if (!ieee80211_is_data_qos(hdr->frame_control) || + is_multicast_ether_addr(hdr->addr1)) goto dont_reorder; /* @@ -764,6 +776,8 @@ static void ieee80211_rx_reorder_ampdu(struct ieee80211_rx_data *rx) if (!sta) goto dont_reorder; + ack_policy = *ieee80211_get_qos_ctl(hdr) & + IEEE80211_QOS_CTL_ACK_POLICY_MASK; tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK; tid_agg_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[tid]); @@ -774,6 +788,15 @@ static void ieee80211_rx_reorder_ampdu(struct ieee80211_rx_data *rx) if (unlikely(hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_NULLFUNC))) goto dont_reorder; + /* not part of a BA session */ + if (ack_policy != IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK && + ack_policy != IEEE80211_QOS_CTL_ACK_POLICY_NORMAL) + goto dont_reorder; + + /* not actually part of this BA session */ + if (!(status->rx_flags & IEEE80211_RX_RA_MATCH)) + goto dont_reorder; + /* new, potentially un-ordered, ampdu frame - process it */ /* reset session timer */ @@ -819,7 +842,7 @@ ieee80211_rx_h_check(struct ieee80211_rx_data *rx) !ieee80211_is_qos_nullfunc(hdr->frame_control) && !is_multicast_ether_addr(hdr->addr1)) { if (unlikely(ieee80211_has_retry(hdr->frame_control) && - rx->sta->last_seq_ctrl[rx->queue] == + rx->sta->last_seq_ctrl[rx->seqno_idx] == hdr->seq_ctrl)) { if (status->rx_flags & IEEE80211_RX_RA_MATCH) { rx->local->dot11FrameDuplicateCount++; @@ -827,7 +850,7 @@ ieee80211_rx_h_check(struct ieee80211_rx_data *rx) } return RX_DROP_UNUSABLE; } else - rx->sta->last_seq_ctrl[rx->queue] = hdr->seq_ctrl; + rx->sta->last_seq_ctrl[rx->seqno_idx] = hdr->seq_ctrl; } if (unlikely(rx->skb->len < 16)) { @@ -851,8 +874,35 @@ ieee80211_rx_h_check(struct ieee80211_rx_data *rx) ieee80211_is_pspoll(hdr->frame_control)) && rx->sdata->vif.type != NL80211_IFTYPE_ADHOC && rx->sdata->vif.type != NL80211_IFTYPE_WDS && - (!rx->sta || !test_sta_flags(rx->sta, WLAN_STA_ASSOC)))) + (!rx->sta || !test_sta_flag(rx->sta, WLAN_STA_ASSOC)))) { + /* + * accept port control frames from the AP even when it's not + * yet marked ASSOC to prevent a race where we don't set the + * assoc bit quickly enough before it sends the first frame + */ + if (rx->sta && rx->sdata->vif.type == NL80211_IFTYPE_STATION && + ieee80211_is_data_present(hdr->frame_control)) { + unsigned int hdrlen; + __be16 ethertype; + + hdrlen = ieee80211_hdrlen(hdr->frame_control); + + if (rx->skb->len < hdrlen + 8) + return RX_DROP_MONITOR; + + skb_copy_bits(rx->skb, hdrlen + 6, ðertype, 2); + if (ethertype == rx->sdata->control_port_protocol) + return RX_CONTINUE; + } + + if (rx->sdata->vif.type == NL80211_IFTYPE_AP && + cfg80211_rx_spurious_frame(rx->sdata->dev, + hdr->addr2, + GFP_ATOMIC)) + return RX_DROP_UNUSABLE; + return RX_DROP_MONITOR; + } return RX_CONTINUE; } @@ -1020,26 +1070,18 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx) } if (rx->key) { + if (unlikely(rx->key->flags & KEY_FLAG_TAINTED)) + return RX_DROP_MONITOR; + rx->key->tx_rx_count++; /* TODO: add threshold stuff again */ } else { return RX_DROP_MONITOR; } - if (skb_linearize(rx->skb)) - return RX_DROP_UNUSABLE; - /* the hdr variable is invalid now! */ - switch (rx->key->conf.cipher) { case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: - /* Check for weak IVs if possible */ - if (rx->sta && ieee80211_is_data(fc) && - (!(status->flag & RX_FLAG_IV_STRIPPED) || - !(status->flag & RX_FLAG_DECRYPTED)) && - ieee80211_wep_is_weak_iv(rx->skb, rx->key)) - rx->sta->wep_weak_iv_count++; - result = ieee80211_crypto_wep_decrypt(rx); break; case WLAN_CIPHER_SUITE_TKIP: @@ -1059,6 +1101,8 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx) return RX_DROP_UNUSABLE; } + /* the hdr variable is invalid after the decrypt handlers */ + /* either the frame has been decrypted or will be dropped */ status->flag |= RX_FLAG_DECRYPTED; @@ -1104,7 +1148,7 @@ static void ap_sta_ps_start(struct sta_info *sta) struct ieee80211_local *local = sdata->local; atomic_inc(&sdata->bss->num_sta_ps); - set_sta_flags(sta, WLAN_STA_PS_STA); + set_sta_flag(sta, WLAN_STA_PS_STA); if (!(local->hw.flags & IEEE80211_HW_AP_LINK_PS)) drv_sta_notify(local, sdata, STA_NOTIFY_SLEEP, &sta->sta); #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG @@ -1115,19 +1159,15 @@ static void ap_sta_ps_start(struct sta_info *sta) static void ap_sta_ps_end(struct sta_info *sta) { - struct ieee80211_sub_if_data *sdata = sta->sdata; - - atomic_dec(&sdata->bss->num_sta_ps); - #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG printk(KERN_DEBUG "%s: STA %pM aid %d exits power save mode\n", - sdata->name, sta->sta.addr, sta->sta.aid); + sta->sdata->name, sta->sta.addr, sta->sta.aid); #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */ - if (test_sta_flags(sta, WLAN_STA_PS_DRIVER)) { + if (test_sta_flag(sta, WLAN_STA_PS_DRIVER)) { #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG printk(KERN_DEBUG "%s: STA %pM aid %d driver-ps-blocked\n", - sdata->name, sta->sta.addr, sta->sta.aid); + sta->sdata->name, sta->sta.addr, sta->sta.aid); #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */ return; } @@ -1143,7 +1183,7 @@ int ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start) WARN_ON(!(sta_inf->local->hw.flags & IEEE80211_HW_AP_LINK_PS)); /* Don't let the same PS state be set twice */ - in_ps = test_sta_flags(sta_inf, WLAN_STA_PS_STA); + in_ps = test_sta_flag(sta_inf, WLAN_STA_PS_STA); if ((start && in_ps) || (!start && !in_ps)) return -EINVAL; @@ -1157,6 +1197,81 @@ int ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start) EXPORT_SYMBOL(ieee80211_sta_ps_transition); static ieee80211_rx_result debug_noinline +ieee80211_rx_h_uapsd_and_pspoll(struct ieee80211_rx_data *rx) +{ + struct ieee80211_sub_if_data *sdata = rx->sdata; + struct ieee80211_hdr *hdr = (void *)rx->skb->data; + struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb); + int tid, ac; + + if (!rx->sta || !(status->rx_flags & IEEE80211_RX_RA_MATCH)) + return RX_CONTINUE; + + if (sdata->vif.type != NL80211_IFTYPE_AP && + sdata->vif.type != NL80211_IFTYPE_AP_VLAN) + return RX_CONTINUE; + + /* + * The device handles station powersave, so don't do anything about + * uAPSD and PS-Poll frames (the latter shouldn't even come up from + * it to mac80211 since they're handled.) + */ + if (sdata->local->hw.flags & IEEE80211_HW_AP_LINK_PS) + return RX_CONTINUE; + + /* + * Don't do anything if the station isn't already asleep. In + * the uAPSD case, the station will probably be marked asleep, + * in the PS-Poll case the station must be confused ... + */ + if (!test_sta_flag(rx->sta, WLAN_STA_PS_STA)) + return RX_CONTINUE; + + if (unlikely(ieee80211_is_pspoll(hdr->frame_control))) { + if (!test_sta_flag(rx->sta, WLAN_STA_SP)) { + if (!test_sta_flag(rx->sta, WLAN_STA_PS_DRIVER)) + ieee80211_sta_ps_deliver_poll_response(rx->sta); + else + set_sta_flag(rx->sta, WLAN_STA_PSPOLL); + } + + /* Free PS Poll skb here instead of returning RX_DROP that would + * count as an dropped frame. */ + dev_kfree_skb(rx->skb); + + return RX_QUEUED; + } else if (!ieee80211_has_morefrags(hdr->frame_control) && + !(status->rx_flags & IEEE80211_RX_DEFERRED_RELEASE) && + ieee80211_has_pm(hdr->frame_control) && + (ieee80211_is_data_qos(hdr->frame_control) || + ieee80211_is_qos_nullfunc(hdr->frame_control))) { + tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK; + ac = ieee802_1d_to_ac[tid & 7]; + + /* + * If this AC is not trigger-enabled do nothing. + * + * NB: This could/should check a separate bitmap of trigger- + * enabled queues, but for now we only implement uAPSD w/o + * TSPEC changes to the ACs, so they're always the same. + */ + if (!(rx->sta->sta.uapsd_queues & BIT(ac))) + return RX_CONTINUE; + + /* if we are in a service period, do nothing */ + if (test_sta_flag(rx->sta, WLAN_STA_SP)) + return RX_CONTINUE; + + if (!test_sta_flag(rx->sta, WLAN_STA_PS_DRIVER)) + ieee80211_sta_ps_deliver_uapsd(rx->sta); + else + set_sta_flag(rx->sta, WLAN_STA_UAPSD); + } + + return RX_CONTINUE; +} + +static ieee80211_rx_result debug_noinline ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx) { struct sta_info *sta = rx->sta; @@ -1202,8 +1317,10 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx) sta->rx_fragments++; sta->rx_bytes += rx->skb->len; - sta->last_signal = status->signal; - ewma_add(&sta->avg_signal, -status->signal); + if (!(status->flag & RX_FLAG_NO_SIGNAL_VAL)) { + sta->last_signal = status->signal; + ewma_add(&sta->avg_signal, -status->signal); + } /* * Change STA power saving mode only at the end of a frame @@ -1214,7 +1331,7 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx) !(status->rx_flags & IEEE80211_RX_DEFERRED_RELEASE) && (rx->sdata->vif.type == NL80211_IFTYPE_AP || rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) { - if (test_sta_flags(sta, WLAN_STA_PS_STA)) { + if (test_sta_flag(sta, WLAN_STA_PS_STA)) { /* * Ignore doze->wake transitions that are * indicated by non-data frames, the standard @@ -1242,15 +1359,20 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx) /* * If we receive a 4-addr nullfunc frame from a STA - * that was not moved to a 4-addr STA vlan yet, drop - * the frame to the monitor interface, to make sure - * that hostapd sees it + * that was not moved to a 4-addr STA vlan yet send + * the event to userspace and for older hostapd drop + * the frame to the monitor interface. */ if (ieee80211_has_a4(hdr->frame_control) && (rx->sdata->vif.type == NL80211_IFTYPE_AP || (rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && - !rx->sdata->u.vlan.sta))) + !rx->sdata->u.vlan.sta))) { + if (!test_and_set_sta_flag(sta, WLAN_STA_4ADDR_EVENT)) + cfg80211_rx_unexpected_4addr_frame( + rx->sdata->dev, sta->sta.addr, + GFP_ATOMIC); return RX_DROP_MONITOR; + } /* * Update counter and free packet here to avoid * counting this as a dropped packed. @@ -1365,11 +1487,14 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) sc = le16_to_cpu(hdr->seq_ctrl); frag = sc & IEEE80211_SCTL_FRAG; - if (likely((!ieee80211_has_morefrags(fc) && frag == 0) || - is_multicast_ether_addr(hdr->addr1))) { - /* not fragmented */ - goto out; + if (is_multicast_ether_addr(hdr->addr1)) { + rx->local->dot11MulticastReceivedFrameCount++; + goto out_no_led; } + + if (likely(!ieee80211_has_morefrags(fc) && frag == 0)) + goto out; + I802_DEBUG_INC(rx->local->rx_handlers_fragments); if (skb_linearize(rx->skb)) @@ -1386,11 +1511,10 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) if (frag == 0) { /* This is the first fragment of a new frame. */ entry = ieee80211_reassemble_add(rx->sdata, frag, seq, - rx->queue, &(rx->skb)); + rx->seqno_idx, &(rx->skb)); if (rx->key && rx->key->conf.cipher == WLAN_CIPHER_SUITE_CCMP && ieee80211_has_protected(fc)) { - int queue = ieee80211_is_mgmt(fc) ? - NUM_RX_DATA_QUEUES : rx->queue; + int queue = rx->security_idx; /* Store CCMP PN so that we can verify that the next * fragment has a sequential PN value. */ entry->ccmp = 1; @@ -1404,7 +1528,8 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) /* This is a fragment for a frame that should already be pending in * fragment cache. Add this fragment to the end of the pending entry. */ - entry = ieee80211_reassemble_find(rx->sdata, frag, seq, rx->queue, hdr); + entry = ieee80211_reassemble_find(rx->sdata, frag, seq, + rx->seqno_idx, hdr); if (!entry) { I802_DEBUG_INC(rx->local->rx_handlers_drop_defrag); return RX_DROP_MONITOR; @@ -1424,8 +1549,7 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) if (pn[i]) break; } - queue = ieee80211_is_mgmt(fc) ? - NUM_RX_DATA_QUEUES : rx->queue; + queue = rx->security_idx; rpn = rx->key->u.ccmp.rx_pn[queue]; if (memcmp(pn, rpn, CCMP_PN_LEN)) return RX_DROP_UNUSABLE; @@ -1461,58 +1585,10 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) status->rx_flags |= IEEE80211_RX_FRAGMENTED; out: + ieee80211_led_rx(rx->local); + out_no_led: if (rx->sta) rx->sta->rx_packets++; - if (is_multicast_ether_addr(hdr->addr1)) - rx->local->dot11MulticastReceivedFrameCount++; - else - ieee80211_led_rx(rx->local); - return RX_CONTINUE; -} - -static ieee80211_rx_result debug_noinline -ieee80211_rx_h_ps_poll(struct ieee80211_rx_data *rx) -{ - struct ieee80211_sub_if_data *sdata = rx->sdata; - __le16 fc = ((struct ieee80211_hdr *)rx->skb->data)->frame_control; - struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb); - - if (likely(!rx->sta || !ieee80211_is_pspoll(fc) || - !(status->rx_flags & IEEE80211_RX_RA_MATCH))) - return RX_CONTINUE; - - if ((sdata->vif.type != NL80211_IFTYPE_AP) && - (sdata->vif.type != NL80211_IFTYPE_AP_VLAN)) - return RX_DROP_UNUSABLE; - - if (!test_sta_flags(rx->sta, WLAN_STA_PS_DRIVER)) - ieee80211_sta_ps_deliver_poll_response(rx->sta); - else - set_sta_flags(rx->sta, WLAN_STA_PSPOLL); - - /* Free PS Poll skb here instead of returning RX_DROP that would - * count as an dropped frame. */ - dev_kfree_skb(rx->skb); - - return RX_QUEUED; -} - -static ieee80211_rx_result debug_noinline -ieee80211_rx_h_remove_qos_control(struct ieee80211_rx_data *rx) -{ - u8 *data = rx->skb->data; - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)data; - - if (!ieee80211_is_data_qos(hdr->frame_control)) - return RX_CONTINUE; - - /* remove the qos control field, update frame type and meta-data */ - memmove(data + IEEE80211_QOS_CTL_LEN, data, - ieee80211_hdrlen(hdr->frame_control) - IEEE80211_QOS_CTL_LEN); - hdr = (struct ieee80211_hdr *)skb_pull(rx->skb, IEEE80211_QOS_CTL_LEN); - /* change frame type to non QOS */ - hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA); - return RX_CONTINUE; } @@ -1520,7 +1596,7 @@ static int ieee80211_802_1x_port_control(struct ieee80211_rx_data *rx) { if (unlikely(!rx->sta || - !test_sta_flags(rx->sta, WLAN_STA_AUTHORIZED))) + !test_sta_flag(rx->sta, WLAN_STA_AUTHORIZED))) return -EACCES; return 0; @@ -1563,7 +1639,7 @@ ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx) if (status->flag & RX_FLAG_DECRYPTED) return 0; - if (rx->sta && test_sta_flags(rx->sta, WLAN_STA_MFP)) { + if (rx->sta && test_sta_flag(rx->sta, WLAN_STA_MFP)) { if (unlikely(!ieee80211_has_protected(fc) && ieee80211_is_unicast_robust_mgmt_frame(rx->skb) && rx->key)) { @@ -1748,7 +1824,12 @@ ieee80211_deliver_skb(struct ieee80211_rx_data *rx) } if (xmit_skb) { - /* send to wireless media */ + /* + * Send to wireless media and increase priority by 256 to + * keep the received priority instead of reclassifying + * the frame (see cfg80211_classify8021d). + */ + xmit_skb->priority += 256; xmit_skb->protocol = htons(ETH_P_802_3); skb_reset_network_header(xmit_skb); skb_reset_mac_header(xmit_skb); @@ -1817,23 +1898,49 @@ ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx) static ieee80211_rx_result ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) { - struct ieee80211_hdr *hdr; + struct ieee80211_hdr *fwd_hdr, *hdr; + struct ieee80211_tx_info *info; struct ieee80211s_hdr *mesh_hdr; - unsigned int hdrlen; struct sk_buff *skb = rx->skb, *fwd_skb; struct ieee80211_local *local = rx->local; struct ieee80211_sub_if_data *sdata = rx->sdata; struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb); + struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; + __le16 reason = cpu_to_le16(WLAN_REASON_MESH_PATH_NOFORWARD); + u16 q, hdrlen; hdr = (struct ieee80211_hdr *) skb->data; hdrlen = ieee80211_hdrlen(hdr->frame_control); + + /* make sure fixed part of mesh header is there, also checks skb len */ + if (!pskb_may_pull(rx->skb, hdrlen + 6)) + return RX_DROP_MONITOR; + mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen); - if (!ieee80211_is_data(hdr->frame_control)) + /* make sure full mesh header is there, also checks skb len */ + if (!pskb_may_pull(rx->skb, + hdrlen + ieee80211_get_mesh_hdrlen(mesh_hdr))) + return RX_DROP_MONITOR; + + /* reload pointers */ + hdr = (struct ieee80211_hdr *) skb->data; + mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen); + + if (ieee80211_drop_unencrypted(rx, hdr->frame_control)) + return RX_DROP_MONITOR; + + /* frame is in RMC, don't forward */ + if (ieee80211_is_data(hdr->frame_control) && + is_multicast_ether_addr(hdr->addr1) && + mesh_rmc_check(hdr->addr3, mesh_hdr, rx->sdata)) + return RX_DROP_MONITOR; + + if (!ieee80211_is_data(hdr->frame_control) || + !(status->rx_flags & IEEE80211_RX_RA_MATCH)) return RX_CONTINUE; if (!mesh_hdr->ttl) - /* illegal frame */ return RX_DROP_MONITOR; if (mesh_hdr->flags & MESH_FLAGS_AE) { @@ -1844,9 +1951,12 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) if (is_multicast_ether_addr(hdr->addr1)) { mpp_addr = hdr->addr3; proxied_addr = mesh_hdr->eaddr1; - } else { + } else if (mesh_hdr->flags & MESH_FLAGS_AE_A5_A6) { + /* has_a4 already checked in ieee80211_rx_mesh_check */ mpp_addr = hdr->addr4; proxied_addr = mesh_hdr->eaddr2; + } else { + return RX_DROP_MONITOR; } rcu_read_lock(); @@ -1867,60 +1977,51 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx) compare_ether_addr(sdata->vif.addr, hdr->addr3) == 0) return RX_CONTINUE; - mesh_hdr->ttl--; + q = ieee80211_select_queue_80211(local, skb, hdr); + if (ieee80211_queue_stopped(&local->hw, q)) { + IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, dropped_frames_congestion); + return RX_DROP_MONITOR; + } + skb_set_queue_mapping(skb, q); - if (status->rx_flags & IEEE80211_RX_RA_MATCH) { - if (!mesh_hdr->ttl) - IEEE80211_IFSTA_MESH_CTR_INC(&rx->sdata->u.mesh, - dropped_frames_ttl); - else { - struct ieee80211_hdr *fwd_hdr; - struct ieee80211_tx_info *info; - - fwd_skb = skb_copy(skb, GFP_ATOMIC); - - if (!fwd_skb && net_ratelimit()) - printk(KERN_DEBUG "%s: failed to clone mesh frame\n", - sdata->name); - if (!fwd_skb) - goto out; - - fwd_hdr = (struct ieee80211_hdr *) fwd_skb->data; - memcpy(fwd_hdr->addr2, sdata->vif.addr, ETH_ALEN); - info = IEEE80211_SKB_CB(fwd_skb); - memset(info, 0, sizeof(*info)); - info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING; - info->control.vif = &rx->sdata->vif; - skb_set_queue_mapping(skb, - ieee80211_select_queue(rx->sdata, fwd_skb)); - ieee80211_set_qos_hdr(local, skb); - if (is_multicast_ether_addr(fwd_hdr->addr1)) - IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.mesh, - fwded_mcast); - else { - int err; - /* - * Save TA to addr1 to send TA a path error if a - * suitable next hop is not found - */ - memcpy(fwd_hdr->addr1, fwd_hdr->addr2, - ETH_ALEN); - err = mesh_nexthop_lookup(fwd_skb, sdata); - /* Failed to immediately resolve next hop: - * fwded frame was dropped or will be added - * later to the pending skb queue. */ - if (err) - return RX_DROP_MONITOR; - - IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.mesh, - fwded_unicast); - } - IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.mesh, - fwded_frames); - ieee80211_add_pending_skb(local, fwd_skb); - } + if (!--mesh_hdr->ttl) { + IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, dropped_frames_ttl); + return RX_DROP_MONITOR; + } + + if (!ifmsh->mshcfg.dot11MeshForwarding) + goto out; + + fwd_skb = skb_copy(skb, GFP_ATOMIC); + if (!fwd_skb) { + if (net_ratelimit()) + printk(KERN_DEBUG "%s: failed to clone mesh frame\n", + sdata->name); + goto out; + } + + fwd_hdr = (struct ieee80211_hdr *) fwd_skb->data; + info = IEEE80211_SKB_CB(fwd_skb); + memset(info, 0, sizeof(*info)); + info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING; + info->control.vif = &rx->sdata->vif; + info->control.jiffies = jiffies; + if (is_multicast_ether_addr(fwd_hdr->addr1)) { + IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, fwded_mcast); + memcpy(fwd_hdr->addr2, sdata->vif.addr, ETH_ALEN); + } else if (!mesh_nexthop_lookup(fwd_skb, sdata)) { + IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, fwded_unicast); + } else { + /* unable to resolve next hop */ + mesh_path_error_tx(ifmsh->mshcfg.element_ttl, fwd_hdr->addr3, + 0, reason, fwd_hdr->addr2, sdata); + IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, dropped_frames_no_route); + kfree_skb(fwd_skb); + return RX_DROP_MONITOR; } + IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, fwded_frames); + ieee80211_add_pending_skb(local, fwd_skb); out: if (is_multicast_ether_addr(hdr->addr1) || sdata->dev->flags & IFF_PROMISC) @@ -1948,12 +2049,17 @@ ieee80211_rx_h_data(struct ieee80211_rx_data *rx) return RX_DROP_MONITOR; /* - * Allow the cooked monitor interface of an AP to see 4-addr frames so - * that a 4-addr station can be detected and moved into a separate VLAN + * Send unexpected-4addr-frame event to hostapd. For older versions, + * also drop the frame to cooked monitor interfaces. */ if (ieee80211_has_a4(hdr->frame_control) && - sdata->vif.type == NL80211_IFTYPE_AP) + sdata->vif.type == NL80211_IFTYPE_AP) { + if (rx->sta && + !test_and_set_sta_flag(rx->sta, WLAN_STA_4ADDR_EVENT)) + cfg80211_rx_unexpected_4addr_frame( + rx->sdata->dev, rx->sta->sta.addr, GFP_ATOMIC); return RX_DROP_MONITOR; + } err = __ieee80211_data_to_8023(rx, &port_control); if (unlikely(err)) @@ -2108,6 +2214,20 @@ ieee80211_rx_h_mgmt_check(struct ieee80211_rx_data *rx) if (!ieee80211_is_mgmt(mgmt->frame_control)) return RX_DROP_MONITOR; + if (rx->sdata->vif.type == NL80211_IFTYPE_AP && + ieee80211_is_beacon(mgmt->frame_control) && + !(rx->flags & IEEE80211_RX_BEACON_REPORTED)) { + int sig = 0; + + if (rx->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) + sig = status->signal; + + cfg80211_report_obss_beacon(rx->local->hw.wiphy, + rx->skb->data, rx->skb->len, + status->freq, sig, GFP_ATOMIC); + rx->flags |= IEEE80211_RX_BEACON_REPORTED; + } + if (!(status->rx_flags & IEEE80211_RX_RA_MATCH)) return RX_DROP_MONITOR; @@ -2140,16 +2260,71 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) return RX_DROP_UNUSABLE; switch (mgmt->u.action.category) { + case WLAN_CATEGORY_HT: + /* reject HT action frames from stations not supporting HT */ + if (!rx->sta->sta.ht_cap.ht_supported) + goto invalid; + + if (sdata->vif.type != NL80211_IFTYPE_STATION && + sdata->vif.type != NL80211_IFTYPE_MESH_POINT && + sdata->vif.type != NL80211_IFTYPE_AP_VLAN && + sdata->vif.type != NL80211_IFTYPE_AP && + sdata->vif.type != NL80211_IFTYPE_ADHOC) + break; + + /* verify action & smps_control are present */ + if (len < IEEE80211_MIN_ACTION_SIZE + 2) + goto invalid; + + switch (mgmt->u.action.u.ht_smps.action) { + case WLAN_HT_ACTION_SMPS: { + struct ieee80211_supported_band *sband; + u8 smps; + + /* convert to HT capability */ + switch (mgmt->u.action.u.ht_smps.smps_control) { + case WLAN_HT_SMPS_CONTROL_DISABLED: + smps = WLAN_HT_CAP_SM_PS_DISABLED; + break; + case WLAN_HT_SMPS_CONTROL_STATIC: + smps = WLAN_HT_CAP_SM_PS_STATIC; + break; + case WLAN_HT_SMPS_CONTROL_DYNAMIC: + smps = WLAN_HT_CAP_SM_PS_DYNAMIC; + break; + default: + goto invalid; + } + smps <<= IEEE80211_HT_CAP_SM_PS_SHIFT; + + /* if no change do nothing */ + if ((rx->sta->sta.ht_cap.cap & + IEEE80211_HT_CAP_SM_PS) == smps) + goto handled; + + rx->sta->sta.ht_cap.cap &= ~IEEE80211_HT_CAP_SM_PS; + rx->sta->sta.ht_cap.cap |= smps; + + sband = rx->local->hw.wiphy->bands[status->band]; + + rate_control_rate_update( + local, sband, rx->sta, + IEEE80211_RC_SMPS_CHANGED, + ieee80211_get_tx_channel_type( + local, local->_oper_channel_type)); + goto handled; + } + default: + goto invalid; + } + + break; case WLAN_CATEGORY_BACK: - /* - * The aggregation code is not prepared to handle - * anything but STA/AP due to the BSSID handling; - * IBSS could work in the code but isn't supported - * by drivers or the standard. - */ if (sdata->vif.type != NL80211_IFTYPE_STATION && + sdata->vif.type != NL80211_IFTYPE_MESH_POINT && sdata->vif.type != NL80211_IFTYPE_AP_VLAN && - sdata->vif.type != NL80211_IFTYPE_AP) + sdata->vif.type != NL80211_IFTYPE_AP && + sdata->vif.type != NL80211_IFTYPE_ADHOC) break; /* verify action_code is present */ @@ -2203,7 +2378,7 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) if (sdata->vif.type != NL80211_IFTYPE_STATION) break; - if (memcmp(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN)) + if (compare_ether_addr(mgmt->bssid, sdata->u.mgd.bssid)) break; goto queue; @@ -2222,12 +2397,37 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx) goto handled; } break; + case WLAN_CATEGORY_SELF_PROTECTED: + if (len < (IEEE80211_MIN_ACTION_SIZE + + sizeof(mgmt->u.action.u.self_prot.action_code))) + break; + + switch (mgmt->u.action.u.self_prot.action_code) { + case WLAN_SP_MESH_PEERING_OPEN: + case WLAN_SP_MESH_PEERING_CLOSE: + case WLAN_SP_MESH_PEERING_CONFIRM: + if (!ieee80211_vif_is_mesh(&sdata->vif)) + goto invalid; + if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) + /* userspace handles this frame */ + break; + goto queue; + case WLAN_SP_MGK_INFORM: + case WLAN_SP_MGK_ACK: + if (!ieee80211_vif_is_mesh(&sdata->vif)) + goto invalid; + break; + } + break; case WLAN_CATEGORY_MESH_ACTION: + if (len < (IEEE80211_MIN_ACTION_SIZE + + sizeof(mgmt->u.action.u.mesh_action.action_code))) + break; + if (!ieee80211_vif_is_mesh(&sdata->vif)) break; - goto queue; - case WLAN_CATEGORY_MESH_PATH_SEL: - if (!mesh_path_sel_is_hwmp(sdata)) + if (mesh_action_is_path_sel(mgmt) && + (!mesh_path_sel_is_hwmp(sdata))) break; goto queue; } @@ -2258,6 +2458,7 @@ static ieee80211_rx_result debug_noinline ieee80211_rx_h_userspace_mgmt(struct ieee80211_rx_data *rx) { struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb); + int sig = 0; /* skip known-bad action frames and return them in the next handler */ if (status->rx_flags & IEEE80211_RX_MALFORMED_ACTION_FRM) @@ -2270,7 +2471,10 @@ ieee80211_rx_h_userspace_mgmt(struct ieee80211_rx_data *rx) * it transmitted were processed or returned. */ - if (cfg80211_rx_mgmt(rx->sdata->dev, status->freq, + if (rx->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) + sig = status->signal; + + if (cfg80211_rx_mgmt(rx->sdata->dev, status->freq, sig, rx->skb->data, rx->skb->len, GFP_ATOMIC)) { if (rx->sta) @@ -2338,14 +2542,9 @@ static ieee80211_rx_result debug_noinline ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx) { struct ieee80211_sub_if_data *sdata = rx->sdata; - ieee80211_rx_result rxs; struct ieee80211_mgmt *mgmt = (void *)rx->skb->data; __le16 stype; - rxs = ieee80211_work_rx_mgmt(rx->sdata, rx->skb); - if (rxs != RX_CONTINUE) - return rxs; - stype = mgmt->frame_control & cpu_to_le16(IEEE80211_FCTL_STYPE); if (!ieee80211_vif_is_mesh(&sdata->vif) && @@ -2354,10 +2553,13 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx) return RX_DROP_MONITOR; switch (stype) { + case cpu_to_le16(IEEE80211_STYPE_AUTH): case cpu_to_le16(IEEE80211_STYPE_BEACON): case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP): /* process for all: mesh, mlme, ibss */ break; + case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP): + case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP): case cpu_to_le16(IEEE80211_STYPE_DEAUTH): case cpu_to_le16(IEEE80211_STYPE_DISASSOC): if (is_multicast_ether_addr(mgmt->da) && @@ -2369,7 +2571,6 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx) return RX_DROP_MONITOR; break; case cpu_to_le16(IEEE80211_STYPE_PROBE_REQ): - case cpu_to_le16(IEEE80211_STYPE_AUTH): /* process only for ibss */ if (sdata->vif.type != NL80211_IFTYPE_ADHOC) return RX_DROP_MONITOR; @@ -2394,16 +2595,10 @@ static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx, { struct ieee80211_sub_if_data *sdata; struct ieee80211_local *local = rx->local; - struct ieee80211_rtap_hdr { - struct ieee80211_radiotap_header hdr; - u8 flags; - u8 rate_or_pad; - __le16 chan_freq; - __le16 chan_flags; - } __packed *rthdr; struct sk_buff *skb = rx->skb, *skb2; struct net_device *prev_dev = NULL; struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb); + int needed_headroom; /* * If cooked monitor has been processed already, then @@ -2413,30 +2608,20 @@ static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx, goto out_free_skb; rx->flags |= IEEE80211_RX_CMNTR; - if (skb_headroom(skb) < sizeof(*rthdr) && - pskb_expand_head(skb, sizeof(*rthdr), 0, GFP_ATOMIC)) + /* If there are no cooked monitor interfaces, just free the SKB */ + if (!local->cooked_mntrs) goto out_free_skb; - rthdr = (void *)skb_push(skb, sizeof(*rthdr)); - memset(rthdr, 0, sizeof(*rthdr)); - rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); - rthdr->hdr.it_present = - cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) | - (1 << IEEE80211_RADIOTAP_CHANNEL)); + /* room for the radiotap header based on driver features */ + needed_headroom = ieee80211_rx_radiotap_len(local, status); - if (rate) { - rthdr->rate_or_pad = rate->bitrate / 5; - rthdr->hdr.it_present |= - cpu_to_le32(1 << IEEE80211_RADIOTAP_RATE); - } - rthdr->chan_freq = cpu_to_le16(status->freq); + if (skb_headroom(skb) < needed_headroom && + pskb_expand_head(skb, needed_headroom, 0, GFP_ATOMIC)) + goto out_free_skb; - if (status->band == IEEE80211_BAND_5GHZ) - rthdr->chan_flags = cpu_to_le16(IEEE80211_CHAN_OFDM | - IEEE80211_CHAN_5GHZ); - else - rthdr->chan_flags = cpu_to_le16(IEEE80211_CHAN_DYN | - IEEE80211_CHAN_2GHZ); + /* prepend radiotap information */ + ieee80211_add_rx_radiotap_header(local, skb, rate, needed_headroom, + false); skb_set_mac_header(skb, 0); skb->ip_summed = CHECKSUM_UNNECESSARY; @@ -2539,17 +2724,16 @@ static void ieee80211_rx_handlers(struct ieee80211_rx_data *rx) CALL_RXH(ieee80211_rx_h_decrypt) CALL_RXH(ieee80211_rx_h_check_more_data) + CALL_RXH(ieee80211_rx_h_uapsd_and_pspoll) CALL_RXH(ieee80211_rx_h_sta_process) CALL_RXH(ieee80211_rx_h_defragment) - CALL_RXH(ieee80211_rx_h_ps_poll) CALL_RXH(ieee80211_rx_h_michael_mic_verify) /* must be after MMIC verify so header is counted in MPDU mic */ - CALL_RXH(ieee80211_rx_h_remove_qos_control) - CALL_RXH(ieee80211_rx_h_amsdu) #ifdef CONFIG_MAC80211_MESH if (ieee80211_vif_is_mesh(&rx->sdata->vif)) CALL_RXH(ieee80211_rx_h_mesh_fwding); #endif + CALL_RXH(ieee80211_rx_h_amsdu) CALL_RXH(ieee80211_rx_h_data) CALL_RXH(ieee80211_rx_h_ctrl); CALL_RXH(ieee80211_rx_h_mgmt_check) @@ -2605,7 +2789,9 @@ void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid) .sta = sta, .sdata = sta->sdata, .local = sta->local, - .queue = tid, + /* This is OK -- must be QoS data frame */ + .security_idx = tid, + .seqno_idx = tid, .flags = 0, }; struct tid_ampdu_rx *tid_agg_rx; @@ -2647,6 +2833,9 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx, case NL80211_IFTYPE_ADHOC: if (!bssid) return 0; + if (compare_ether_addr(sdata->vif.addr, hdr->addr2) == 0 || + compare_ether_addr(sdata->u.ibss.bssid, hdr->addr2) == 0) + return 0; if (ieee80211_is_beacon(hdr->frame_control)) { return 1; } @@ -2666,8 +2855,8 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx, rate_idx = 0; /* TODO: HT rates */ else rate_idx = status->rate_idx; - rx->sta = ieee80211_ibss_add_sta(sdata, bssid, - hdr->addr2, BIT(rate_idx), GFP_ATOMIC); + ieee80211_ibss_rx_no_sta(sdata, bssid, hdr->addr2, + BIT(rate_idx)); } break; case NL80211_IFTYPE_MESH_POINT: @@ -2688,6 +2877,15 @@ static int prepare_for_handlers(struct ieee80211_rx_data *rx, return 0; } else if (!ieee80211_bssid_match(bssid, sdata->vif.addr)) { + /* + * Accept public action frames even when the + * BSSID doesn't match, this is used for P2P + * and location updates. Note that mac80211 + * itself never looks at these frames. + */ + if (!(status->rx_flags & IEEE80211_RX_IN_SCAN) && + ieee80211_is_public_action(hdr, skb->len)) + return 1; if (!(status->rx_flags & IEEE80211_RX_IN_SCAN) && !ieee80211_is_beacon(hdr->frame_control)) return 0; |