| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Sara Sharon | 3716 | 41.08% | 40 | 35.40% |
| Johannes Berg | 3044 | 33.65% | 40 | 35.40% |
| striebit | 1286 | 14.22% | 8 | 7.08% |
| Emmanuel Grumbach | 537 | 5.94% | 9 | 7.96% |
| Luciano Coelho | 243 | 2.69% | 8 | 7.08% |
| Golan Ben-Ami | 73 | 0.81% | 1 | 0.88% |
| Tova Mussai | 72 | 0.80% | 1 | 0.88% |
| David Spinadel | 54 | 0.60% | 2 | 1.77% |
| Kees Cook | 12 | 0.13% | 1 | 0.88% |
| Andrei Otcheretianski | 5 | 0.06% | 1 | 0.88% |
| Liad Kaufman | 2 | 0.02% | 1 | 0.88% |
| Jason A. Donenfeld | 1 | 0.01% | 1 | 0.88% |
| Total | 9045 | 113 |
/****************************************************************************** * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH * Copyright(c) 2015 - 2017 Intel Deutschland GmbH * Copyright(c) 2018 - 2019 Intel Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * The full GNU General Public License is included in this distribution * in the file called COPYING. * * Contact Information: * Intel Linux Wireless <linuxwifi@intel.com> * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * * BSD LICENSE * * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH * Copyright(c) 2015 - 2017 Intel Deutschland GmbH * Copyright(c) 2018 - 2019 Intel Corporation * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *****************************************************************************/ #include <linux/etherdevice.h> #include <linux/skbuff.h> #include "iwl-trans.h" #include "mvm.h" #include "fw-api.h" static void *iwl_mvm_skb_get_hdr(struct sk_buff *skb) { struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); u8 *data = skb->data; /* Alignment concerns */ BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_he) % 4); BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_he_mu) % 4); BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_lsig) % 4); BUILD_BUG_ON(sizeof(struct ieee80211_vendor_radiotap) % 4); if (rx_status->flag & RX_FLAG_RADIOTAP_HE) data += sizeof(struct ieee80211_radiotap_he); if (rx_status->flag & RX_FLAG_RADIOTAP_HE_MU) data += sizeof(struct ieee80211_radiotap_he_mu); if (rx_status->flag & RX_FLAG_RADIOTAP_LSIG) data += sizeof(struct ieee80211_radiotap_lsig); if (rx_status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA) { struct ieee80211_vendor_radiotap *radiotap = (void *)data; data += sizeof(*radiotap) + radiotap->len + radiotap->pad; } return data; } static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb, int queue, struct ieee80211_sta *sta) { struct iwl_mvm_sta *mvmsta; struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb); struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb); struct iwl_mvm_key_pn *ptk_pn; int res; u8 tid, keyidx; u8 pn[IEEE80211_CCMP_PN_LEN]; u8 *extiv; /* do PN checking */ /* multicast and non-data only arrives on default queue */ if (!ieee80211_is_data(hdr->frame_control) || is_multicast_ether_addr(hdr->addr1)) return 0; /* do not check PN for open AP */ if (!(stats->flag & RX_FLAG_DECRYPTED)) return 0; /* * avoid checking for default queue - we don't want to replicate * all the logic that's necessary for checking the PN on fragmented * frames, leave that to mac80211 */ if (queue == 0) return 0; /* if we are here - this for sure is either CCMP or GCMP */ if (IS_ERR_OR_NULL(sta)) { IWL_ERR(mvm, "expected hw-decrypted unicast frame for station\n"); return -1; } mvmsta = iwl_mvm_sta_from_mac80211(sta); extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control); keyidx = extiv[3] >> 6; ptk_pn = rcu_dereference(mvmsta->ptk_pn[keyidx]); if (!ptk_pn) return -1; if (ieee80211_is_data_qos(hdr->frame_control)) tid = ieee80211_get_tid(hdr); else tid = 0; /* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */ if (tid >= IWL_MAX_TID_COUNT) return -1; /* load pn */ pn[0] = extiv[7]; pn[1] = extiv[6]; pn[2] = extiv[5]; pn[3] = extiv[4]; pn[4] = extiv[1]; pn[5] = extiv[0]; res = memcmp(pn, ptk_pn->q[queue].pn[tid], IEEE80211_CCMP_PN_LEN); if (res < 0) return -1; if (!res && !(stats->flag & RX_FLAG_ALLOW_SAME_PN)) return -1; memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN); stats->flag |= RX_FLAG_PN_VALIDATED; return 0; } /* iwl_mvm_create_skb Adds the rxb to a new skb */ static int iwl_mvm_create_skb(struct iwl_mvm *mvm, struct sk_buff *skb, struct ieee80211_hdr *hdr, u16 len, u8 crypt_len, struct iwl_rx_cmd_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_rx_mpdu_desc *desc = (void *)pkt->data; unsigned int headlen, fraglen, pad_len = 0; unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control); if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) { len -= 2; pad_len = 2; } /* If frame is small enough to fit in skb->head, pull it completely. * If not, only pull ieee80211_hdr (including crypto if present, and * an additional 8 bytes for SNAP/ethertype, see below) so that * splice() or TCP coalesce are more efficient. * * Since, in addition, ieee80211_data_to_8023() always pull in at * least 8 bytes (possibly more for mesh) we can do the same here * to save the cost of doing it later. That still doesn't pull in * the actual IP header since the typical case has a SNAP header. * If the latter changes (there are efforts in the standards group * to do so) we should revisit this and ieee80211_data_to_8023(). */ headlen = (len <= skb_tailroom(skb)) ? len : hdrlen + crypt_len + 8; /* The firmware may align the packet to DWORD. * The padding is inserted after the IV. * After copying the header + IV skip the padding if * present before copying packet data. */ hdrlen += crypt_len; if (WARN_ONCE(headlen < hdrlen, "invalid packet lengths (hdrlen=%d, len=%d, crypt_len=%d)\n", hdrlen, len, crypt_len)) { /* * We warn and trace because we want to be able to see * it in trace-cmd as well. */ IWL_DEBUG_RX(mvm, "invalid packet lengths (hdrlen=%d, len=%d, crypt_len=%d)\n", hdrlen, len, crypt_len); return -EINVAL; } skb_put_data(skb, hdr, hdrlen); skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen); fraglen = len - headlen; if (fraglen) { int offset = (void *)hdr + headlen + pad_len - rxb_addr(rxb) + rxb_offset(rxb); skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, fraglen, rxb->truesize); } return 0; } static void iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm *mvm, struct sk_buff *skb) { struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); struct ieee80211_vendor_radiotap *radiotap; const int size = sizeof(*radiotap) + sizeof(__le16); if (!mvm->cur_aid) return; /* ensure alignment */ BUILD_BUG_ON((size + 2) % 4); radiotap = skb_put(skb, size + 2); radiotap->align = 1; /* Intel OUI */ radiotap->oui[0] = 0xf6; radiotap->oui[1] = 0x54; radiotap->oui[2] = 0x25; /* radiotap sniffer config sub-namespace */ radiotap->subns = 1; radiotap->present = 0x1; radiotap->len = size - sizeof(*radiotap); radiotap->pad = 2; /* fill the data now */ memcpy(radiotap->data, &mvm->cur_aid, sizeof(mvm->cur_aid)); /* and clear the padding */ memset(radiotap->data + sizeof(__le16), 0, radiotap->pad); rx_status->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA; } /* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */ static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm, struct napi_struct *napi, struct sk_buff *skb, int queue, struct ieee80211_sta *sta, bool csi) { if (iwl_mvm_check_pn(mvm, skb, queue, sta)) kfree_skb(skb); else ieee80211_rx_napi(mvm->hw, sta, skb, napi); } static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm, struct ieee80211_rx_status *rx_status, u32 rate_n_flags, int energy_a, int energy_b) { int max_energy; u32 rate_flags = rate_n_flags; energy_a = energy_a ? -energy_a : S8_MIN; energy_b = energy_b ? -energy_b : S8_MIN; max_energy = max(energy_a, energy_b); IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n", energy_a, energy_b, max_energy); rx_status->signal = max_energy; rx_status->chains = (rate_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS; rx_status->chain_signal[0] = energy_a; rx_status->chain_signal[1] = energy_b; rx_status->chain_signal[2] = S8_MIN; } static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr, struct ieee80211_rx_status *stats, u16 phy_info, struct iwl_rx_mpdu_desc *desc, u32 pkt_flags, int queue, u8 *crypt_len) { u16 status = le16_to_cpu(desc->status); /* * Drop UNKNOWN frames in aggregation, unless in monitor mode * (where we don't have the keys). * We limit this to aggregation because in TKIP this is a valid * scenario, since we may not have the (correct) TTAK (phase 1 * key) in the firmware. */ if (phy_info & IWL_RX_MPDU_PHY_AMPDU && (status & IWL_RX_MPDU_STATUS_SEC_MASK) == IWL_RX_MPDU_STATUS_SEC_UNKNOWN && !mvm->monitor_on) return -1; if (!ieee80211_has_protected(hdr->frame_control) || (status & IWL_RX_MPDU_STATUS_SEC_MASK) == IWL_RX_MPDU_STATUS_SEC_NONE) return 0; /* TODO: handle packets encrypted with unknown alg */ switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) { case IWL_RX_MPDU_STATUS_SEC_CCM: case IWL_RX_MPDU_STATUS_SEC_GCM: BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN); /* alg is CCM: check MIC only */ if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) return -1; stats->flag |= RX_FLAG_DECRYPTED; if (pkt_flags & FH_RSCSR_RADA_EN) stats->flag |= RX_FLAG_MIC_STRIPPED; *crypt_len = IEEE80211_CCMP_HDR_LEN; return 0; case IWL_RX_MPDU_STATUS_SEC_TKIP: /* Don't drop the frame and decrypt it in SW */ if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_DEPRECATE_TTAK) && !(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK)) return 0; if (mvm->trans->trans_cfg->gen2 && !(status & RX_MPDU_RES_STATUS_MIC_OK)) stats->flag |= RX_FLAG_MMIC_ERROR; *crypt_len = IEEE80211_TKIP_IV_LEN; /* fall through */ case IWL_RX_MPDU_STATUS_SEC_WEP: if (!(status & IWL_RX_MPDU_STATUS_ICV_OK)) return -1; stats->flag |= RX_FLAG_DECRYPTED; if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == IWL_RX_MPDU_STATUS_SEC_WEP) *crypt_len = IEEE80211_WEP_IV_LEN; if (pkt_flags & FH_RSCSR_RADA_EN) { stats->flag |= RX_FLAG_ICV_STRIPPED; if (mvm->trans->trans_cfg->gen2) stats->flag |= RX_FLAG_MMIC_STRIPPED; } return 0; case IWL_RX_MPDU_STATUS_SEC_EXT_ENC: if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) return -1; stats->flag |= RX_FLAG_DECRYPTED; return 0; default: /* * Sometimes we can get frames that were not decrypted * because the firmware didn't have the keys yet. This can * happen after connection where we can get multicast frames * before the GTK is installed. * Silently drop those frames. * Also drop un-decrypted frames in monitor mode. */ if (!is_multicast_ether_addr(hdr->addr1) && !mvm->monitor_on && net_ratelimit()) IWL_ERR(mvm, "Unhandled alg: 0x%x\n", status); } return 0; } static void iwl_mvm_rx_csum(struct ieee80211_sta *sta, struct sk_buff *skb, struct iwl_rx_mpdu_desc *desc) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif); u16 flags = le16_to_cpu(desc->l3l4_flags); u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >> IWL_RX_L3_PROTO_POS); if (mvmvif->features & NETIF_F_RXCSUM && flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK && (flags & IWL_RX_L3L4_IP_HDR_CSUM_OK || l3_prot == IWL_RX_L3_TYPE_IPV6 || l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG)) skb->ip_summed = CHECKSUM_UNNECESSARY; } /* * returns true if a packet is a duplicate and should be dropped. * Updates AMSDU PN tracking info */ static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue, struct ieee80211_rx_status *rx_status, struct ieee80211_hdr *hdr, struct iwl_rx_mpdu_desc *desc) { struct iwl_mvm_sta *mvm_sta; struct iwl_mvm_rxq_dup_data *dup_data; u8 tid, sub_frame_idx; if (WARN_ON(IS_ERR_OR_NULL(sta))) return false; mvm_sta = iwl_mvm_sta_from_mac80211(sta); dup_data = &mvm_sta->dup_data[queue]; /* * Drop duplicate 802.11 retransmissions * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery") */ if (ieee80211_is_ctl(hdr->frame_control) || ieee80211_is_qos_nullfunc(hdr->frame_control) || is_multicast_ether_addr(hdr->addr1)) { rx_status->flag |= RX_FLAG_DUP_VALIDATED; return false; } if (ieee80211_is_data_qos(hdr->frame_control)) /* frame has qos control */ tid = ieee80211_get_tid(hdr); else tid = IWL_MAX_TID_COUNT; /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */ sub_frame_idx = desc->amsdu_info & IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK; if (unlikely(ieee80211_has_retry(hdr->frame_control) && dup_data->last_seq[tid] == hdr->seq_ctrl && dup_data->last_sub_frame[tid] >= sub_frame_idx)) return true; /* Allow same PN as the first subframe for following sub frames */ if (dup_data->last_seq[tid] == hdr->seq_ctrl && sub_frame_idx > dup_data->last_sub_frame[tid] && desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) rx_status->flag |= RX_FLAG_ALLOW_SAME_PN; dup_data->last_seq[tid] = hdr->seq_ctrl; dup_data->last_sub_frame[tid] = sub_frame_idx; rx_status->flag |= RX_FLAG_DUP_VALIDATED; return false; } int iwl_mvm_notify_rx_queue(struct iwl_mvm *mvm, u32 rxq_mask, const u8 *data, u32 count, bool async) { u8 buf[sizeof(struct iwl_rxq_sync_cmd) + sizeof(struct iwl_mvm_rss_sync_notif)]; struct iwl_rxq_sync_cmd *cmd = (void *)buf; u32 data_size = sizeof(*cmd) + count; int ret; /* * size must be a multiple of DWORD * Ensure we don't overflow buf */ if (WARN_ON(count & 3 || count > sizeof(struct iwl_mvm_rss_sync_notif))) return -EINVAL; cmd->rxq_mask = cpu_to_le32(rxq_mask); cmd->count = cpu_to_le32(count); cmd->flags = 0; memcpy(cmd->payload, data, count); ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(DATA_PATH_GROUP, TRIGGER_RX_QUEUES_NOTIF_CMD), async ? CMD_ASYNC : 0, data_size, cmd); return ret; } /* * Returns true if sn2 - buffer_size < sn1 < sn2. * To be used only in order to compare reorder buffer head with NSSN. * We fully trust NSSN unless it is behind us due to reorder timeout. * Reorder timeout can only bring us up to buffer_size SNs ahead of NSSN. */ static bool iwl_mvm_is_sn_less(u16 sn1, u16 sn2, u16 buffer_size) { return ieee80211_sn_less(sn1, sn2) && !ieee80211_sn_less(sn1, sn2 - buffer_size); } static void iwl_mvm_sync_nssn(struct iwl_mvm *mvm, u8 baid, u16 nssn) { if (IWL_MVM_USE_NSSN_SYNC) { struct iwl_mvm_rss_sync_notif notif = { .metadata.type = IWL_MVM_RXQ_NSSN_SYNC, .metadata.sync = 0, .nssn_sync.baid = baid, .nssn_sync.nssn = nssn, }; iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); } } #define RX_REORDER_BUF_TIMEOUT_MQ (HZ / 10) enum iwl_mvm_release_flags { IWL_MVM_RELEASE_SEND_RSS_SYNC = BIT(0), IWL_MVM_RELEASE_FROM_RSS_SYNC = BIT(1), }; static void iwl_mvm_release_frames(struct iwl_mvm *mvm, struct ieee80211_sta *sta, struct napi_struct *napi, struct iwl_mvm_baid_data *baid_data, struct iwl_mvm_reorder_buffer *reorder_buf, u16 nssn, u32 flags) { struct iwl_mvm_reorder_buf_entry *entries = &baid_data->entries[reorder_buf->queue * baid_data->entries_per_queue]; u16 ssn = reorder_buf->head_sn; lockdep_assert_held(&reorder_buf->lock); /* * We keep the NSSN not too far behind, if we are sync'ing it and it * is more than 2048 ahead of us, it must be behind us. Discard it. * This can happen if the queue that hit the 0 / 2048 seqno was lagging * behind and this queue already processed packets. The next if * would have caught cases where this queue would have processed less * than 64 packets, but it may have processed more than 64 packets. */ if ((flags & IWL_MVM_RELEASE_FROM_RSS_SYNC) && ieee80211_sn_less(nssn, ssn)) goto set_timer; /* ignore nssn smaller than head sn - this can happen due to timeout */ if (iwl_mvm_is_sn_less(nssn, ssn, reorder_buf->buf_size)) goto set_timer; while (iwl_mvm_is_sn_less(ssn, nssn, reorder_buf->buf_size)) { int index = ssn % reorder_buf->buf_size; struct sk_buff_head *skb_list = &entries[index].e.frames; struct sk_buff *skb; ssn = ieee80211_sn_inc(ssn); if ((flags & IWL_MVM_RELEASE_SEND_RSS_SYNC) && (ssn == 2048 || ssn == 0)) iwl_mvm_sync_nssn(mvm, baid_data->baid, ssn); /* * Empty the list. Will have more than one frame for A-MSDU. * Empty list is valid as well since nssn indicates frames were * received. */ while ((skb = __skb_dequeue(skb_list))) { iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, reorder_buf->queue, sta, false); reorder_buf->num_stored--; } } reorder_buf->head_sn = nssn; set_timer: if (reorder_buf->num_stored && !reorder_buf->removed) { u16 index = reorder_buf->head_sn % reorder_buf->buf_size; while (skb_queue_empty(&entries[index].e.frames)) index = (index + 1) % reorder_buf->buf_size; /* modify timer to match next frame's expiration time */ mod_timer(&reorder_buf->reorder_timer, entries[index].e.reorder_time + 1 + RX_REORDER_BUF_TIMEOUT_MQ); } else { del_timer(&reorder_buf->reorder_timer); } } void iwl_mvm_reorder_timer_expired(struct timer_list *t) { struct iwl_mvm_reorder_buffer *buf = from_timer(buf, t, reorder_timer); struct iwl_mvm_baid_data *baid_data = iwl_mvm_baid_data_from_reorder_buf(buf); struct iwl_mvm_reorder_buf_entry *entries = &baid_data->entries[buf->queue * baid_data->entries_per_queue]; int i; u16 sn = 0, index = 0; bool expired = false; bool cont = false; spin_lock(&buf->lock); if (!buf->num_stored || buf->removed) { spin_unlock(&buf->lock); return; } for (i = 0; i < buf->buf_size ; i++) { index = (buf->head_sn + i) % buf->buf_size; if (skb_queue_empty(&entries[index].e.frames)) { /* * If there is a hole and the next frame didn't expire * we want to break and not advance SN */ cont = false; continue; } if (!cont && !time_after(jiffies, entries[index].e.reorder_time + RX_REORDER_BUF_TIMEOUT_MQ)) break; expired = true; /* continue until next hole after this expired frames */ cont = true; sn = ieee80211_sn_add(buf->head_sn, i + 1); } if (expired) { struct ieee80211_sta *sta; struct iwl_mvm_sta *mvmsta; u8 sta_id = baid_data->sta_id; rcu_read_lock(); sta = rcu_dereference(buf->mvm->fw_id_to_mac_id[sta_id]); mvmsta = iwl_mvm_sta_from_mac80211(sta); /* SN is set to the last expired frame + 1 */ IWL_DEBUG_HT(buf->mvm, "Releasing expired frames for sta %u, sn %d\n", sta_id, sn); iwl_mvm_event_frame_timeout_callback(buf->mvm, mvmsta->vif, sta, baid_data->tid); iwl_mvm_release_frames(buf->mvm, sta, NULL, baid_data, buf, sn, IWL_MVM_RELEASE_SEND_RSS_SYNC); rcu_read_unlock(); } else { /* * If no frame expired and there are stored frames, index is now * pointing to the first unexpired frame - modify timer * accordingly to this frame. */ mod_timer(&buf->reorder_timer, entries[index].e.reorder_time + 1 + RX_REORDER_BUF_TIMEOUT_MQ); } spin_unlock(&buf->lock); } static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue, struct iwl_mvm_delba_data *data) { struct iwl_mvm_baid_data *ba_data; struct ieee80211_sta *sta; struct iwl_mvm_reorder_buffer *reorder_buf; u8 baid = data->baid; if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid)) return; rcu_read_lock(); ba_data = rcu_dereference(mvm->baid_map[baid]); if (WARN_ON_ONCE(!ba_data)) goto out; sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]); if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) goto out; reorder_buf = &ba_data->reorder_buf[queue]; /* release all frames that are in the reorder buffer to the stack */ spin_lock_bh(&reorder_buf->lock); iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf, ieee80211_sn_add(reorder_buf->head_sn, reorder_buf->buf_size), 0); spin_unlock_bh(&reorder_buf->lock); del_timer_sync(&reorder_buf->reorder_timer); out: rcu_read_unlock(); } static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm, struct napi_struct *napi, u8 baid, u16 nssn, int queue, u32 flags) { struct ieee80211_sta *sta; struct iwl_mvm_reorder_buffer *reorder_buf; struct iwl_mvm_baid_data *ba_data; IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n", baid, nssn); if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID || baid >= ARRAY_SIZE(mvm->baid_map))) return; rcu_read_lock(); ba_data = rcu_dereference(mvm->baid_map[baid]); if (WARN_ON_ONCE(!ba_data)) goto out; sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]); if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) goto out; reorder_buf = &ba_data->reorder_buf[queue]; spin_lock_bh(&reorder_buf->lock); iwl_mvm_release_frames(mvm, sta, napi, ba_data, reorder_buf, nssn, flags); spin_unlock_bh(&reorder_buf->lock); out: rcu_read_unlock(); } static void iwl_mvm_nssn_sync(struct iwl_mvm *mvm, struct napi_struct *napi, int queue, const struct iwl_mvm_nssn_sync_data *data) { iwl_mvm_release_frames_from_notif(mvm, napi, data->baid, data->nssn, queue, IWL_MVM_RELEASE_FROM_RSS_SYNC); } void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct napi_struct *napi, struct iwl_rx_cmd_buffer *rxb, int queue) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_rxq_sync_notification *notif; struct iwl_mvm_internal_rxq_notif *internal_notif; notif = (void *)pkt->data; internal_notif = (void *)notif->payload; if (internal_notif->sync && mvm->queue_sync_cookie != internal_notif->cookie) { WARN_ONCE(1, "Received expired RX queue sync message\n"); return; } switch (internal_notif->type) { case IWL_MVM_RXQ_EMPTY: break; case IWL_MVM_RXQ_NOTIF_DEL_BA: iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data); break; case IWL_MVM_RXQ_NSSN_SYNC: iwl_mvm_nssn_sync(mvm, napi, queue, (void *)internal_notif->data); break; default: WARN_ONCE(1, "Invalid identifier %d", internal_notif->type); } if (internal_notif->sync && !atomic_dec_return(&mvm->queue_sync_counter)) wake_up(&mvm->rx_sync_waitq); } static void iwl_mvm_oldsn_workaround(struct iwl_mvm *mvm, struct ieee80211_sta *sta, int tid, struct iwl_mvm_reorder_buffer *buffer, u32 reorder, u32 gp2, int queue) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); if (gp2 != buffer->consec_oldsn_ampdu_gp2) { /* we have a new (A-)MPDU ... */ /* * reset counter to 0 if we didn't have any oldsn in * the last A-MPDU (as detected by GP2 being identical) */ if (!buffer->consec_oldsn_prev_drop) buffer->consec_oldsn_drops = 0; /* either way, update our tracking state */ buffer->consec_oldsn_ampdu_gp2 = gp2; } else if (buffer->consec_oldsn_prev_drop) { /* * tracking state didn't change, and we had an old SN * indication before - do nothing in this case, we * already noted this one down and are waiting for the * next A-MPDU (by GP2) */ return; } /* return unless this MPDU has old SN */ if (!(reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN)) return; /* update state */ buffer->consec_oldsn_prev_drop = 1; buffer->consec_oldsn_drops++; /* if limit is reached, send del BA and reset state */ if (buffer->consec_oldsn_drops == IWL_MVM_AMPDU_CONSEC_DROPS_DELBA) { IWL_WARN(mvm, "reached %d old SN frames from %pM on queue %d, stopping BA session on TID %d\n", IWL_MVM_AMPDU_CONSEC_DROPS_DELBA, sta->addr, queue, tid); ieee80211_stop_rx_ba_session(mvmsta->vif, BIT(tid), sta->addr); buffer->consec_oldsn_prev_drop = 0; buffer->consec_oldsn_drops = 0; } } /* * Returns true if the MPDU was buffered\dropped, false if it should be passed * to upper layer. */ static bool iwl_mvm_reorder(struct iwl_mvm *mvm, struct napi_struct *napi, int queue, struct ieee80211_sta *sta, struct sk_buff *skb, struct iwl_rx_mpdu_desc *desc) { struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb); struct iwl_mvm_sta *mvm_sta; struct iwl_mvm_baid_data *baid_data; struct iwl_mvm_reorder_buffer *buffer; struct sk_buff *tail; u32 reorder = le32_to_cpu(desc->reorder_data); bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU; bool last_subframe = desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME; u8 tid = ieee80211_get_tid(hdr); u8 sub_frame_idx = desc->amsdu_info & IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK; struct iwl_mvm_reorder_buf_entry *entries; int index; u16 nssn, sn; u8 baid; baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >> IWL_RX_MPDU_REORDER_BAID_SHIFT; /* * This also covers the case of receiving a Block Ack Request * outside a BA session; we'll pass it to mac80211 and that * then sends a delBA action frame. * This also covers pure monitor mode, in which case we won't * have any BA sessions. */ if (baid == IWL_RX_REORDER_DATA_INVALID_BAID) return false; /* no sta yet */ if (WARN_ONCE(IS_ERR_OR_NULL(sta), "Got valid BAID without a valid station assigned\n")) return false; mvm_sta = iwl_mvm_sta_from_mac80211(sta); /* not a data packet or a bar */ if (!ieee80211_is_back_req(hdr->frame_control) && (!ieee80211_is_data_qos(hdr->frame_control) || is_multicast_ether_addr(hdr->addr1))) return false; if (unlikely(!ieee80211_is_data_present(hdr->frame_control))) return false; baid_data = rcu_dereference(mvm->baid_map[baid]); if (!baid_data) { IWL_DEBUG_RX(mvm, "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n", baid, reorder); return false; } if (WARN(tid != baid_data->tid || mvm_sta->sta_id != baid_data->sta_id, "baid 0x%x is mapped to sta:%d tid:%d, but was received for sta:%d tid:%d\n", baid, baid_data->sta_id, baid_data->tid, mvm_sta->sta_id, tid)) return false; nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK; sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >> IWL_RX_MPDU_REORDER_SN_SHIFT; buffer = &baid_data->reorder_buf[queue]; entries = &baid_data->entries[queue * baid_data->entries_per_queue]; spin_lock_bh(&buffer->lock); if (!buffer->valid) { if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) { spin_unlock_bh(&buffer->lock); return false; } buffer->valid = true; } if (ieee80211_is_back_req(hdr->frame_control)) { iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, nssn, 0); goto drop; } /* * If there was a significant jump in the nssn - adjust. * If the SN is smaller than the NSSN it might need to first go into * the reorder buffer, in which case we just release up to it and the * rest of the function will take care of storing it and releasing up to * the nssn. * This should not happen. This queue has been lagging and it should * have been updated by a IWL_MVM_RXQ_NSSN_SYNC notification. Be nice * and update the other queues. */ if (!iwl_mvm_is_sn_less(nssn, buffer->head_sn + buffer->buf_size, buffer->buf_size) || !ieee80211_sn_less(sn, buffer->head_sn + buffer->buf_size)) { u16 min_sn = ieee80211_sn_less(sn, nssn) ? sn : nssn; iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, min_sn, IWL_MVM_RELEASE_SEND_RSS_SYNC); } iwl_mvm_oldsn_workaround(mvm, sta, tid, buffer, reorder, rx_status->device_timestamp, queue); /* drop any oudated packets */ if (ieee80211_sn_less(sn, buffer->head_sn)) goto drop; /* release immediately if allowed by nssn and no stored frames */ if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) { if (iwl_mvm_is_sn_less(buffer->head_sn, nssn, buffer->buf_size) && (!amsdu || last_subframe)) { /* * If we crossed the 2048 or 0 SN, notify all the * queues. This is done in order to avoid having a * head_sn that lags behind for too long. When that * happens, we can get to a situation where the head_sn * is within the interval [nssn - buf_size : nssn] * which will make us think that the nssn is a packet * that we already freed because of the reordering * buffer and we will ignore it. So maintain the * head_sn somewhat updated across all the queues: * when it crosses 0 and 2048. */ if (sn == 2048 || sn == 0) iwl_mvm_sync_nssn(mvm, baid, sn); buffer->head_sn = nssn; } /* No need to update AMSDU last SN - we are moving the head */ spin_unlock_bh(&buffer->lock); return false; } /* * release immediately if there are no stored frames, and the sn is * equal to the head. * This can happen due to reorder timer, where NSSN is behind head_sn. * When we released everything, and we got the next frame in the * sequence, according to the NSSN we can't release immediately, * while technically there is no hole and we can move forward. */ if (!buffer->num_stored && sn == buffer->head_sn) { if (!amsdu || last_subframe) { if (sn == 2048 || sn == 0) iwl_mvm_sync_nssn(mvm, baid, sn); buffer->head_sn = ieee80211_sn_inc(buffer->head_sn); } /* No need to update AMSDU last SN - we are moving the head */ spin_unlock_bh(&buffer->lock); return false; } index = sn % buffer->buf_size; /* * Check if we already stored this frame * As AMSDU is either received or not as whole, logic is simple: * If we have frames in that position in the buffer and the last frame * originated from AMSDU had a different SN then it is a retransmission. * If it is the same SN then if the subframe index is incrementing it * is the same AMSDU - otherwise it is a retransmission. */ tail = skb_peek_tail(&entries[index].e.frames); if (tail && !amsdu) goto drop; else if (tail && (sn != buffer->last_amsdu || buffer->last_sub_index >= sub_frame_idx)) goto drop; /* put in reorder buffer */ __skb_queue_tail(&entries[index].e.frames, skb); buffer->num_stored++; entries[index].e.reorder_time = jiffies; if (amsdu) { buffer->last_amsdu = sn; buffer->last_sub_index = sub_frame_idx; } /* * We cannot trust NSSN for AMSDU sub-frames that are not the last. * The reason is that NSSN advances on the first sub-frame, and may * cause the reorder buffer to advance before all the sub-frames arrive. * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with * SN 1. NSSN for first sub frame will be 3 with the result of driver * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is * already ahead and it will be dropped. * If the last sub-frame is not on this queue - we will get frame * release notification with up to date NSSN. */ if (!amsdu || last_subframe) iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, nssn, IWL_MVM_RELEASE_SEND_RSS_SYNC); spin_unlock_bh(&buffer->lock); return true; drop: kfree_skb(skb); spin_unlock_bh(&buffer->lock); return true; } static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm, u32 reorder_data, u8 baid) { unsigned long now = jiffies; unsigned long timeout; struct iwl_mvm_baid_data *data; rcu_read_lock(); data = rcu_dereference(mvm->baid_map[baid]); if (!data) { IWL_DEBUG_RX(mvm, "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n", baid, reorder_data); goto out; } if (!data->timeout) goto out; timeout = data->timeout; /* * Do not update last rx all the time to avoid cache bouncing * between the rx queues. * Update it every timeout. Worst case is the session will * expire after ~ 2 * timeout, which doesn't matter that much. */ if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now)) /* Update is atomic */ data->last_rx = now; out: rcu_read_unlock(); } static void iwl_mvm_flip_address(u8 *addr) { int i; u8 mac_addr[ETH_ALEN]; for (i = 0; i < ETH_ALEN; i++) mac_addr[i] = addr[ETH_ALEN - i - 1]; ether_addr_copy(addr, mac_addr); } struct iwl_mvm_rx_phy_data { enum iwl_rx_phy_info_type info_type; __le32 d0, d1, d2, d3; __le16 d4; }; static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm, struct iwl_mvm_rx_phy_data *phy_data, u32 rate_n_flags, struct ieee80211_radiotap_he_mu *he_mu) { u32 phy_data2 = le32_to_cpu(phy_data->d2); u32 phy_data3 = le32_to_cpu(phy_data->d3); u16 phy_data4 = le16_to_cpu(phy_data->d4); if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) { he_mu->flags1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN | IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN); he_mu->flags1 |= le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU, phy_data4), IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU); he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0, phy_data2); he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1, phy_data3); he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2, phy_data2); he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3, phy_data3); } if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) && (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) != RATE_MCS_CHAN_WIDTH_20) { he_mu->flags1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN | IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN); he_mu->flags2 |= le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU, phy_data4), IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU); he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0, phy_data2); he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1, phy_data3); he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2, phy_data2); he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3, phy_data3); } } static void iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data, u32 rate_n_flags, struct ieee80211_radiotap_he *he, struct ieee80211_radiotap_he_mu *he_mu, struct ieee80211_rx_status *rx_status) { /* * Unfortunately, we have to leave the mac80211 data * incorrect for the case that we receive an HE-MU * transmission and *don't* have the HE phy data (due * to the bits being used for TSF). This shouldn't * happen though as management frames where we need * the TSF/timers are not be transmitted in HE-MU. */ u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK); u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK; u8 offs = 0; rx_status->bw = RATE_INFO_BW_HE_RU; he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN); switch (ru) { case 0 ... 36: rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26; offs = ru; break; case 37 ... 52: rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52; offs = ru - 37; break; case 53 ... 60: rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106; offs = ru - 53; break; case 61 ... 64: rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242; offs = ru - 61; break; case 65 ... 66: rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484; offs = ru - 65; break; case 67: rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996; break; case 68: rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996; break; } he->data2 |= le16_encode_bits(offs, IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET); he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN | IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN); if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80)) he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC); #define CHECK_BW(bw) \ BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \ RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \ BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \ RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS) CHECK_BW(20); CHECK_BW(40); CHECK_BW(80); CHECK_BW(160); if (he_mu) he_mu->flags2 |= le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK, rate_n_flags), IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW); else if (he_type == RATE_MCS_HE_TYPE_TRIG) he->data6 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) | le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK, rate_n_flags), IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW); } static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm, struct iwl_mvm_rx_phy_data *phy_data, struct ieee80211_radiotap_he *he, struct ieee80211_radiotap_he_mu *he_mu, struct ieee80211_rx_status *rx_status, u32 rate_n_flags, int queue) { switch (phy_data->info_type) { case IWL_RX_PHY_INFO_TYPE_NONE: case IWL_RX_PHY_INFO_TYPE_CCK: case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY: case IWL_RX_PHY_INFO_TYPE_HT: case IWL_RX_PHY_INFO_TYPE_VHT_SU: case IWL_RX_PHY_INFO_TYPE_VHT_MU: return; case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT: he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN | IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN | IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN | IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN); he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1), IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1); he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2), IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2); he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3), IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3); he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2, IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4), IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4); /* fall through */ case IWL_RX_PHY_INFO_TYPE_HE_SU: case IWL_RX_PHY_INFO_TYPE_HE_MU: case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: case IWL_RX_PHY_INFO_TYPE_HE_TB: /* HE common */ he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN | IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN | IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN); he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN | IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN | IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN | IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN); he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK), IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR); if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB && phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) { he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN); he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, IWL_RX_PHY_DATA0_HE_UPLINK), IEEE80211_RADIOTAP_HE_DATA3_UL_DL); } he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM), IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG); he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0, IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK), IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD); he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0, IWL_RX_PHY_DATA0_HE_PE_DISAMBIG), IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG); he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK), IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS); he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0, IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK), IEEE80211_RADIOTAP_HE_DATA6_TXOP); he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0, IWL_RX_PHY_DATA0_HE_DOPPLER), IEEE80211_RADIOTAP_HE_DATA6_DOPPLER); break; } switch (phy_data->info_type) { case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: case IWL_RX_PHY_INFO_TYPE_HE_MU: case IWL_RX_PHY_INFO_TYPE_HE_SU: he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN); he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0, IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK), IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE); break; default: /* nothing here */ break; } switch (phy_data->info_type) { case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: he_mu->flags1 |= le16_encode_bits(le16_get_bits(phy_data->d4, IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM), IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM); he_mu->flags1 |= le16_encode_bits(le16_get_bits(phy_data->d4, IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK), IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS); he_mu->flags2 |= le16_encode_bits(le16_get_bits(phy_data->d4, IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK), IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW); iwl_mvm_decode_he_mu_ext(mvm, phy_data, rate_n_flags, he_mu); /* fall through */ case IWL_RX_PHY_INFO_TYPE_HE_MU: he_mu->flags2 |= le16_encode_bits(le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK), IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS); he_mu->flags2 |= le16_encode_bits(le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION), IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP); /* fall through */ case IWL_RX_PHY_INFO_TYPE_HE_TB: case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT: iwl_mvm_decode_he_phy_ru_alloc(phy_data, rate_n_flags, he, he_mu, rx_status); break; case IWL_RX_PHY_INFO_TYPE_HE_SU: he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN); he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0, IWL_RX_PHY_DATA0_HE_BEAM_CHNG), IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE); break; default: /* nothing */ break; } } static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb, struct iwl_mvm_rx_phy_data *phy_data, u32 rate_n_flags, u16 phy_info, int queue) { struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); struct ieee80211_radiotap_he *he = NULL; struct ieee80211_radiotap_he_mu *he_mu = NULL; u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK; u8 stbc, ltf; static const struct ieee80211_radiotap_he known = { .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN | IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN | IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN | IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN), .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN | IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN), }; static const struct ieee80211_radiotap_he_mu mu_known = { .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN | IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN), .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN | IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN), }; he = skb_put_data(skb, &known, sizeof(known)); rx_status->flag |= RX_FLAG_RADIOTAP_HE; if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU || phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) { he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known)); rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU; } /* report the AMPDU-EOF bit on single frames */ if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) { rx_status->flag |= RX_FLAG_AMPDU_DETAILS; rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN; if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF)) rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT; } if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status, rate_n_flags, queue); /* update aggregation data for monitor sake on default queue */ if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) && (phy_info & IWL_RX_MPDU_PHY_AMPDU)) { bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE; /* toggle is switched whenever new aggregation starts */ if (toggle_bit != mvm->ampdu_toggle) { rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN; if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF)) rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT; } } if (he_type == RATE_MCS_HE_TYPE_EXT_SU && rate_n_flags & RATE_MCS_HE_106T_MSK) { rx_status->bw = RATE_INFO_BW_HE_RU; rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106; } /* actually data is filled in mac80211 */ if (he_type == RATE_MCS_HE_TYPE_SU || he_type == RATE_MCS_HE_TYPE_EXT_SU) he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN); stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> RATE_MCS_STBC_POS; rx_status->nss = ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> RATE_VHT_MCS_NSS_POS) + 1; rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; rx_status->encoding = RX_ENC_HE; rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; if (rate_n_flags & RATE_MCS_BF_MSK) rx_status->enc_flags |= RX_ENC_FLAG_BF; rx_status->he_dcm = !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK); #define CHECK_TYPE(F) \ BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \ (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS)) CHECK_TYPE(SU); CHECK_TYPE(EXT_SU); CHECK_TYPE(MU); CHECK_TYPE(TRIG); he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS); if (rate_n_flags & RATE_MCS_BF_MSK) he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF); switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >> RATE_MCS_HE_GI_LTF_POS) { case 0: if (he_type == RATE_MCS_HE_TYPE_TRIG) rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6; else rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8; if (he_type == RATE_MCS_HE_TYPE_MU) ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; else ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X; break; case 1: if (he_type == RATE_MCS_HE_TYPE_TRIG) rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6; else rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8; ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X; break; case 2: if (he_type == RATE_MCS_HE_TYPE_TRIG) { rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2; ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; } else { rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6; ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X; } break; case 3: if ((he_type == RATE_MCS_HE_TYPE_SU || he_type == RATE_MCS_HE_TYPE_EXT_SU) && rate_n_flags & RATE_MCS_SGI_MSK) rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8; else rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2; ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X; break; } he->data5 |= le16_encode_bits(ltf, IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE); } static void iwl_mvm_decode_lsig(struct sk_buff *skb, struct iwl_mvm_rx_phy_data *phy_data) { struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb); struct ieee80211_radiotap_lsig *lsig; switch (phy_data->info_type) { case IWL_RX_PHY_INFO_TYPE_HT: case IWL_RX_PHY_INFO_TYPE_VHT_SU: case IWL_RX_PHY_INFO_TYPE_VHT_MU: case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT: case IWL_RX_PHY_INFO_TYPE_HE_SU: case IWL_RX_PHY_INFO_TYPE_HE_MU: case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT: case IWL_RX_PHY_INFO_TYPE_HE_TB: lsig = skb_put(skb, sizeof(*lsig)); lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN); lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_LSIG_LEN_MASK), IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH); rx_status->flag |= RX_FLAG_RADIOTAP_LSIG; break; default: break; } } static inline u8 iwl_mvm_nl80211_band_from_rx_msdu(u8 phy_band) { switch (phy_band) { case PHY_BAND_24: return NL80211_BAND_2GHZ; case PHY_BAND_5: return NL80211_BAND_5GHZ; default: WARN_ONCE(1, "Unsupported phy band (%u)\n", phy_band); return NL80211_BAND_5GHZ; } } void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi, struct iwl_rx_cmd_buffer *rxb, int queue) { struct ieee80211_rx_status *rx_status; struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_rx_mpdu_desc *desc = (void *)pkt->data; struct ieee80211_hdr *hdr; u32 len = le16_to_cpu(desc->mpdu_len); u32 rate_n_flags, gp2_on_air_rise; u16 phy_info = le16_to_cpu(desc->phy_info); struct ieee80211_sta *sta = NULL; struct sk_buff *skb; u8 crypt_len = 0, channel, energy_a, energy_b; size_t desc_size; struct iwl_mvm_rx_phy_data phy_data = { .d4 = desc->phy_data4, .info_type = IWL_RX_PHY_INFO_TYPE_NONE, }; bool csi = false; if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) return; if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags); channel = desc->v3.channel; gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise); energy_a = desc->v3.energy_a; energy_b = desc->v3.energy_b; desc_size = sizeof(*desc); phy_data.d0 = desc->v3.phy_data0; phy_data.d1 = desc->v3.phy_data1; phy_data.d2 = desc->v3.phy_data2; phy_data.d3 = desc->v3.phy_data3; } else { rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags); channel = desc->v1.channel; gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise); energy_a = desc->v1.energy_a; energy_b = desc->v1.energy_b; desc_size = IWL_RX_DESC_SIZE_V1; phy_data.d0 = desc->v1.phy_data0; phy_data.d1 = desc->v1.phy_data1; phy_data.d2 = desc->v1.phy_data2; phy_data.d3 = desc->v1.phy_data3; } if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) phy_data.info_type = le32_get_bits(phy_data.d1, IWL_RX_PHY_DATA1_INFO_TYPE_MASK); hdr = (void *)(pkt->data + desc_size); /* Dont use dev_alloc_skb(), we'll have enough headroom once * ieee80211_hdr pulled. */ skb = alloc_skb(128, GFP_ATOMIC); if (!skb) { IWL_ERR(mvm, "alloc_skb failed\n"); return; } if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) { /* * If the device inserted padding it means that (it thought) * the 802.11 header wasn't a multiple of 4 bytes long. In * this case, reserve two bytes at the start of the SKB to * align the payload properly in case we end up copying it. */ skb_reserve(skb, 2); } rx_status = IEEE80211_SKB_RXCB(skb); /* This may be overridden by iwl_mvm_rx_he() to HE_RU */ switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { case RATE_MCS_CHAN_WIDTH_20: break; case RATE_MCS_CHAN_WIDTH_40: rx_status->bw = RATE_INFO_BW_40; break; case RATE_MCS_CHAN_WIDTH_80: rx_status->bw = RATE_INFO_BW_80; break; case RATE_MCS_CHAN_WIDTH_160: rx_status->bw = RATE_INFO_BW_160; break; } if (rate_n_flags & RATE_MCS_HE_MSK) iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags, phy_info, queue); iwl_mvm_decode_lsig(skb, &phy_data); rx_status = IEEE80211_SKB_RXCB(skb); if (iwl_mvm_rx_crypto(mvm, hdr, rx_status, phy_info, desc, le32_to_cpu(pkt->len_n_flags), queue, &crypt_len)) { kfree_skb(skb); return; } /* * Keep packets with CRC errors (and with overrun) for monitor mode * (otherwise the firmware discards them) but mark them as bad. */ if (!(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_CRC_OK)) || !(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_OVERRUN_OK))) { IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", le16_to_cpu(desc->status)); rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; } /* set the preamble flag if appropriate */ if (rate_n_flags & RATE_MCS_CCK_MSK && phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE) rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE; if (likely(!(phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) { u64 tsf_on_air_rise; if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise); else tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise); rx_status->mactime = tsf_on_air_rise; /* TSF as indicated by the firmware is at INA time */ rx_status->flag |= RX_FLAG_MACTIME_PLCP_START; } rx_status->device_timestamp = gp2_on_air_rise; if (iwl_mvm_is_band_in_rx_supported(mvm)) { u8 band = BAND_IN_RX_STATUS(desc->mac_phy_idx); rx_status->band = iwl_mvm_nl80211_band_from_rx_msdu(band); } else { rx_status->band = channel > 14 ? NL80211_BAND_5GHZ : NL80211_BAND_2GHZ; } rx_status->freq = ieee80211_channel_to_frequency(channel, rx_status->band); iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a, energy_b); /* update aggregation data for monitor sake on default queue */ if (!queue && (phy_info & IWL_RX_MPDU_PHY_AMPDU)) { bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE; rx_status->flag |= RX_FLAG_AMPDU_DETAILS; /* * Toggle is switched whenever new aggregation starts. Make * sure ampdu_reference is never 0 so we can later use it to * see if the frame was really part of an A-MPDU or not. */ if (toggle_bit != mvm->ampdu_toggle) { mvm->ampdu_ref++; if (mvm->ampdu_ref == 0) mvm->ampdu_ref++; mvm->ampdu_toggle = toggle_bit; } rx_status->ampdu_reference = mvm->ampdu_ref; } if (unlikely(mvm->monitor_on)) iwl_mvm_add_rtap_sniffer_config(mvm, skb); rcu_read_lock(); if (desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) { u8 id = desc->sta_id_flags & IWL_RX_MPDU_SIF_STA_ID_MASK; if (!WARN_ON_ONCE(id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) { sta = rcu_dereference(mvm->fw_id_to_mac_id[id]); if (IS_ERR(sta)) sta = NULL; } } else if (!is_multicast_ether_addr(hdr->addr2)) { /* * This is fine since we prevent two stations with the same * address from being added. */ sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL); } if (sta) { struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); struct ieee80211_vif *tx_blocked_vif = rcu_dereference(mvm->csa_tx_blocked_vif); u8 baid = (u8)((le32_to_cpu(desc->reorder_data) & IWL_RX_MPDU_REORDER_BAID_MASK) >> IWL_RX_MPDU_REORDER_BAID_SHIFT); struct iwl_fw_dbg_trigger_tlv *trig; struct ieee80211_vif *vif = mvmsta->vif; if (!mvm->tcm.paused && len >= sizeof(*hdr) && !is_multicast_ether_addr(hdr->addr1) && ieee80211_is_data(hdr->frame_control) && time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD)) schedule_delayed_work(&mvm->tcm.work, 0); /* * We have tx blocked stations (with CS bit). If we heard * frames from a blocked station on a new channel we can * TX to it again. */ if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif); if (mvmvif->csa_target_freq == rx_status->freq) iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, false); } rs_update_last_rssi(mvm, mvmsta, rx_status); trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), FW_DBG_TRIGGER_RSSI); if (trig && ieee80211_is_beacon(hdr->frame_control)) { struct iwl_fw_dbg_trigger_low_rssi *rssi_trig; s32 rssi; rssi_trig = (void *)trig->data; rssi = le32_to_cpu(rssi_trig->rssi); if (rx_status->signal < rssi) iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, NULL); } if (ieee80211_is_data(hdr->frame_control)) iwl_mvm_rx_csum(sta, skb, desc); if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) { kfree_skb(skb); goto out; } /* * Our hardware de-aggregates AMSDUs but copies the mac header * as it to the de-aggregated MPDUs. We need to turn off the * AMSDU bit in the QoS control ourselves. * In addition, HW reverses addr3 and addr4 - reverse it back. */ if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) && !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) { u8 *qc = ieee80211_get_qos_ctl(hdr); *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT; if (mvm->trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_9000) { iwl_mvm_flip_address(hdr->addr3); if (ieee80211_has_a4(hdr->frame_control)) iwl_mvm_flip_address(hdr->addr4); } } if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) { u32 reorder_data = le32_to_cpu(desc->reorder_data); iwl_mvm_agg_rx_received(mvm, reorder_data, baid); } } if (!(rate_n_flags & RATE_MCS_CCK_MSK) && rate_n_flags & RATE_MCS_SGI_MSK) rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI; if (rate_n_flags & RATE_HT_MCS_GF_MSK) rx_status->enc_flags |= RX_ENC_FLAG_HT_GF; if (rate_n_flags & RATE_MCS_LDPC_MSK) rx_status->enc_flags |= RX_ENC_FLAG_LDPC; if (rate_n_flags & RATE_MCS_HT_MSK) { u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> RATE_MCS_STBC_POS; rx_status->encoding = RX_ENC_HT; rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; } else if (rate_n_flags & RATE_MCS_VHT_MSK) { u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> RATE_MCS_STBC_POS; rx_status->nss = ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> RATE_VHT_MCS_NSS_POS) + 1; rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; rx_status->encoding = RX_ENC_VHT; rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; if (rate_n_flags & RATE_MCS_BF_MSK) rx_status->enc_flags |= RX_ENC_FLAG_BF; } else if (!(rate_n_flags & RATE_MCS_HE_MSK)) { int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, rx_status->band); if (WARN(rate < 0 || rate > 0xFF, "Invalid rate flags 0x%x, band %d,\n", rate_n_flags, rx_status->band)) { kfree_skb(skb); goto out; } rx_status->rate_idx = rate; } /* management stuff on default queue */ if (!queue) { if (unlikely((ieee80211_is_beacon(hdr->frame_control) || ieee80211_is_probe_resp(hdr->frame_control)) && mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)) mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND; if (unlikely(ieee80211_is_beacon(hdr->frame_control) || ieee80211_is_probe_resp(hdr->frame_control))) rx_status->boottime_ns = ktime_get_boottime_ns(); } if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) { kfree_skb(skb); goto out; } if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc)) iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta, csi); out: rcu_read_unlock(); } void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi, struct iwl_rx_cmd_buffer *rxb, int queue) { struct ieee80211_rx_status *rx_status; struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_rx_no_data *desc = (void *)pkt->data; u32 rate_n_flags = le32_to_cpu(desc->rate); u32 gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time); u32 rssi = le32_to_cpu(desc->rssi); u32 info_type = le32_to_cpu(desc->info) & RX_NO_DATA_INFO_TYPE_MSK; u16 phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD; struct ieee80211_sta *sta = NULL; struct sk_buff *skb; u8 channel, energy_a, energy_b; struct iwl_mvm_rx_phy_data phy_data = { .d0 = desc->phy_info[0], .info_type = IWL_RX_PHY_INFO_TYPE_NONE, }; if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) return; energy_a = (rssi & RX_NO_DATA_CHAIN_A_MSK) >> RX_NO_DATA_CHAIN_A_POS; energy_b = (rssi & RX_NO_DATA_CHAIN_B_MSK) >> RX_NO_DATA_CHAIN_B_POS; channel = (rssi & RX_NO_DATA_CHANNEL_MSK) >> RX_NO_DATA_CHANNEL_POS; phy_data.info_type = le32_get_bits(desc->phy_info[1], IWL_RX_PHY_DATA1_INFO_TYPE_MASK); /* Dont use dev_alloc_skb(), we'll have enough headroom once * ieee80211_hdr pulled. */ skb = alloc_skb(128, GFP_ATOMIC); if (!skb) { IWL_ERR(mvm, "alloc_skb failed\n"); return; } rx_status = IEEE80211_SKB_RXCB(skb); /* 0-length PSDU */ rx_status->flag |= RX_FLAG_NO_PSDU; switch (info_type) { case RX_NO_DATA_INFO_TYPE_NDP: rx_status->zero_length_psdu_type = IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING; break; case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED: case RX_NO_DATA_INFO_TYPE_HE_TB_UNMATCHED: rx_status->zero_length_psdu_type = IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED; break; default: rx_status->zero_length_psdu_type = IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR; break; } /* This may be overridden by iwl_mvm_rx_he() to HE_RU */ switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { case RATE_MCS_CHAN_WIDTH_20: break; case RATE_MCS_CHAN_WIDTH_40: rx_status->bw = RATE_INFO_BW_40; break; case RATE_MCS_CHAN_WIDTH_80: rx_status->bw = RATE_INFO_BW_80; break; case RATE_MCS_CHAN_WIDTH_160: rx_status->bw = RATE_INFO_BW_160; break; } if (rate_n_flags & RATE_MCS_HE_MSK) iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags, phy_info, queue); iwl_mvm_decode_lsig(skb, &phy_data); rx_status->device_timestamp = gp2_on_air_rise; rx_status->band = channel > 14 ? NL80211_BAND_5GHZ : NL80211_BAND_2GHZ; rx_status->freq = ieee80211_channel_to_frequency(channel, rx_status->band); iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a, energy_b); rcu_read_lock(); if (!(rate_n_flags & RATE_MCS_CCK_MSK) && rate_n_flags & RATE_MCS_SGI_MSK) rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI; if (rate_n_flags & RATE_HT_MCS_GF_MSK) rx_status->enc_flags |= RX_ENC_FLAG_HT_GF; if (rate_n_flags & RATE_MCS_LDPC_MSK) rx_status->enc_flags |= RX_ENC_FLAG_LDPC; if (rate_n_flags & RATE_MCS_HT_MSK) { u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> RATE_MCS_STBC_POS; rx_status->encoding = RX_ENC_HT; rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; } else if (rate_n_flags & RATE_MCS_VHT_MSK) { u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> RATE_MCS_STBC_POS; rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK; rx_status->encoding = RX_ENC_VHT; rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT; if (rate_n_flags & RATE_MCS_BF_MSK) rx_status->enc_flags |= RX_ENC_FLAG_BF; /* * take the nss from the rx_vec since the rate_n_flags has * only 2 bits for the nss which gives a max of 4 ss but * there may be up to 8 spatial streams */ rx_status->nss = le32_get_bits(desc->rx_vec[0], RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1; } else if (rate_n_flags & RATE_MCS_HE_MSK) { rx_status->nss = le32_get_bits(desc->rx_vec[0], RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1; } else { int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, rx_status->band); if (WARN(rate < 0 || rate > 0xFF, "Invalid rate flags 0x%x, band %d,\n", rate_n_flags, rx_status->band)) { kfree_skb(skb); goto out; } rx_status->rate_idx = rate; } ieee80211_rx_napi(mvm->hw, sta, skb, napi); out: rcu_read_unlock(); } void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi, struct iwl_rx_cmd_buffer *rxb, int queue) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_frame_release *release = (void *)pkt->data; iwl_mvm_release_frames_from_notif(mvm, napi, release->baid, le16_to_cpu(release->nssn), queue, 0); } void iwl_mvm_rx_bar_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi, struct iwl_rx_cmd_buffer *rxb, int queue) { struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_bar_frame_release *release = (void *)pkt->data; unsigned int baid = le32_get_bits(release->ba_info, IWL_BAR_FRAME_RELEASE_BAID_MASK); unsigned int nssn = le32_get_bits(release->ba_info, IWL_BAR_FRAME_RELEASE_NSSN_MASK); unsigned int sta_id = le32_get_bits(release->sta_tid, IWL_BAR_FRAME_RELEASE_STA_MASK); unsigned int tid = le32_get_bits(release->sta_tid, IWL_BAR_FRAME_RELEASE_TID_MASK); struct iwl_mvm_baid_data *baid_data; if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID || baid >= ARRAY_SIZE(mvm->baid_map))) return; rcu_read_lock(); baid_data = rcu_dereference(mvm->baid_map[baid]); if (!baid_data) { IWL_DEBUG_RX(mvm, "Got valid BAID %d but not allocated, invalid BAR release!\n", baid); goto out; } if (WARN(tid != baid_data->tid || sta_id != baid_data->sta_id, "baid 0x%x is mapped to sta:%d tid:%d, but BAR release received for sta:%d tid:%d\n", baid, baid_data->sta_id, baid_data->tid, sta_id, tid)) goto out; iwl_mvm_release_frames_from_notif(mvm, napi, baid, nssn, queue, 0); out: rcu_read_unlock(); }
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