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path: root/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
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Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/tx.c')
-rw-r--r--drivers/net/wireless/intel/iwlwifi/mvm/tx.c2279
1 files changed, 2279 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
new file mode 100644
index 000000000..76219486b
--- /dev/null
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
@@ -0,0 +1,2279 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * Copyright (C) 2012-2014, 2018-2021 Intel Corporation
+ * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
+ * Copyright (C) 2016-2017 Intel Deutschland GmbH
+ */
+#include <linux/ieee80211.h>
+#include <linux/etherdevice.h>
+#include <linux/tcp.h>
+#include <net/ip.h>
+#include <net/ipv6.h>
+
+#include "iwl-trans.h"
+#include "iwl-eeprom-parse.h"
+#include "mvm.h"
+#include "sta.h"
+
+static void
+iwl_mvm_bar_check_trigger(struct iwl_mvm *mvm, const u8 *addr,
+ u16 tid, u16 ssn)
+{
+ struct iwl_fw_dbg_trigger_tlv *trig;
+ struct iwl_fw_dbg_trigger_ba *ba_trig;
+
+ trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, FW_DBG_TRIGGER_BA);
+ if (!trig)
+ return;
+
+ ba_trig = (void *)trig->data;
+
+ if (!(le16_to_cpu(ba_trig->tx_bar) & BIT(tid)))
+ return;
+
+ iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
+ "BAR sent to %pM, tid %d, ssn %d",
+ addr, tid, ssn);
+}
+
+#define OPT_HDR(type, skb, off) \
+ (type *)(skb_network_header(skb) + (off))
+
+static u16 iwl_mvm_tx_csum_pre_bz(struct iwl_mvm *mvm, struct sk_buff *skb,
+ struct ieee80211_tx_info *info, bool amsdu)
+{
+ struct ieee80211_hdr *hdr = (void *)skb->data;
+ u16 offload_assist = 0;
+#if IS_ENABLED(CONFIG_INET)
+ u16 mh_len = ieee80211_hdrlen(hdr->frame_control);
+ u8 protocol = 0;
+
+ /* Do not compute checksum if already computed */
+ if (skb->ip_summed != CHECKSUM_PARTIAL)
+ goto out;
+
+ /* We do not expect to be requested to csum stuff we do not support */
+ if (WARN_ONCE(!(mvm->hw->netdev_features & IWL_TX_CSUM_NETIF_FLAGS) ||
+ (skb->protocol != htons(ETH_P_IP) &&
+ skb->protocol != htons(ETH_P_IPV6)),
+ "No support for requested checksum\n")) {
+ skb_checksum_help(skb);
+ goto out;
+ }
+
+ if (skb->protocol == htons(ETH_P_IP)) {
+ protocol = ip_hdr(skb)->protocol;
+ } else {
+#if IS_ENABLED(CONFIG_IPV6)
+ struct ipv6hdr *ipv6h =
+ (struct ipv6hdr *)skb_network_header(skb);
+ unsigned int off = sizeof(*ipv6h);
+
+ protocol = ipv6h->nexthdr;
+ while (protocol != NEXTHDR_NONE && ipv6_ext_hdr(protocol)) {
+ struct ipv6_opt_hdr *hp;
+
+ /* only supported extension headers */
+ if (protocol != NEXTHDR_ROUTING &&
+ protocol != NEXTHDR_HOP &&
+ protocol != NEXTHDR_DEST) {
+ skb_checksum_help(skb);
+ goto out;
+ }
+
+ hp = OPT_HDR(struct ipv6_opt_hdr, skb, off);
+ protocol = hp->nexthdr;
+ off += ipv6_optlen(hp);
+ }
+ /* if we get here - protocol now should be TCP/UDP */
+#endif
+ }
+
+ if (protocol != IPPROTO_TCP && protocol != IPPROTO_UDP) {
+ WARN_ON_ONCE(1);
+ skb_checksum_help(skb);
+ goto out;
+ }
+
+ /* enable L4 csum */
+ offload_assist |= BIT(TX_CMD_OFFLD_L4_EN);
+
+ /*
+ * Set offset to IP header (snap).
+ * We don't support tunneling so no need to take care of inner header.
+ * Size is in words.
+ */
+ offload_assist |= (4 << TX_CMD_OFFLD_IP_HDR);
+
+ /* Do IPv4 csum for AMSDU only (no IP csum for Ipv6) */
+ if (skb->protocol == htons(ETH_P_IP) && amsdu) {
+ ip_hdr(skb)->check = 0;
+ offload_assist |= BIT(TX_CMD_OFFLD_L3_EN);
+ }
+
+ /* reset UDP/TCP header csum */
+ if (protocol == IPPROTO_TCP)
+ tcp_hdr(skb)->check = 0;
+ else
+ udp_hdr(skb)->check = 0;
+
+ /*
+ * mac header len should include IV, size is in words unless
+ * the IV is added by the firmware like in WEP.
+ * In new Tx API, the IV is always added by the firmware.
+ */
+ if (!iwl_mvm_has_new_tx_api(mvm) && info->control.hw_key &&
+ info->control.hw_key->cipher != WLAN_CIPHER_SUITE_WEP40 &&
+ info->control.hw_key->cipher != WLAN_CIPHER_SUITE_WEP104)
+ mh_len += info->control.hw_key->iv_len;
+ mh_len /= 2;
+ offload_assist |= mh_len << TX_CMD_OFFLD_MH_SIZE;
+
+out:
+#endif
+ if (amsdu)
+ offload_assist |= BIT(TX_CMD_OFFLD_AMSDU);
+ else if (ieee80211_hdrlen(hdr->frame_control) % 4)
+ /* padding is inserted later in transport */
+ offload_assist |= BIT(TX_CMD_OFFLD_PAD);
+
+ return offload_assist;
+}
+
+u32 iwl_mvm_tx_csum_bz(struct iwl_mvm *mvm, struct sk_buff *skb, bool amsdu)
+{
+ struct ieee80211_hdr *hdr = (void *)skb->data;
+ u32 offload_assist = IWL_TX_CMD_OFFLD_BZ_PARTIAL_CSUM;
+ unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
+ unsigned int csum_start = skb_checksum_start_offset(skb);
+
+ offload_assist |= u32_encode_bits(hdrlen / 2,
+ IWL_TX_CMD_OFFLD_BZ_MH_LEN);
+ if (amsdu)
+ offload_assist |= IWL_TX_CMD_OFFLD_BZ_AMSDU;
+ else if (hdrlen % 4)
+ /* padding is inserted later in transport */
+ offload_assist |= IWL_TX_CMD_OFFLD_BZ_MH_PAD;
+
+ if (skb->ip_summed != CHECKSUM_PARTIAL)
+ return offload_assist;
+
+ offload_assist |= IWL_TX_CMD_OFFLD_BZ_ENABLE_CSUM |
+ IWL_TX_CMD_OFFLD_BZ_ZERO2ONES;
+
+ /*
+ * mac80211 will always calculate checksum in software for
+ * non-fast-xmit, and so we can only do offloaded checksum
+ * for fast-xmit frames. In this case, we always have the
+ * RFC 1042 header present. skb_checksum_start_offset()
+ * returns the offset from the beginning, but the hardware
+ * needs it from after the header & SNAP header.
+ */
+ csum_start -= hdrlen + 8;
+
+ offload_assist |= u32_encode_bits(csum_start,
+ IWL_TX_CMD_OFFLD_BZ_START_OFFS);
+ offload_assist |= u32_encode_bits(csum_start + skb->csum_offset,
+ IWL_TX_CMD_OFFLD_BZ_RESULT_OFFS);
+
+ return offload_assist;
+}
+
+static u32 iwl_mvm_tx_csum(struct iwl_mvm *mvm, struct sk_buff *skb,
+ struct ieee80211_tx_info *info,
+ bool amsdu)
+{
+ if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_BZ)
+ return iwl_mvm_tx_csum_pre_bz(mvm, skb, info, amsdu);
+ return iwl_mvm_tx_csum_bz(mvm, skb, amsdu);
+}
+
+/*
+ * Sets most of the Tx cmd's fields
+ */
+void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb,
+ struct iwl_tx_cmd *tx_cmd,
+ struct ieee80211_tx_info *info, u8 sta_id)
+{
+ struct ieee80211_hdr *hdr = (void *)skb->data;
+ __le16 fc = hdr->frame_control;
+ u32 tx_flags = le32_to_cpu(tx_cmd->tx_flags);
+ u32 len = skb->len + FCS_LEN;
+ bool amsdu = false;
+ u8 ac;
+
+ if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) ||
+ (ieee80211_is_probe_resp(fc) &&
+ !is_multicast_ether_addr(hdr->addr1)))
+ tx_flags |= TX_CMD_FLG_ACK;
+ else
+ tx_flags &= ~TX_CMD_FLG_ACK;
+
+ if (ieee80211_is_probe_resp(fc))
+ tx_flags |= TX_CMD_FLG_TSF;
+
+ if (ieee80211_has_morefrags(fc))
+ tx_flags |= TX_CMD_FLG_MORE_FRAG;
+
+ if (ieee80211_is_data_qos(fc)) {
+ u8 *qc = ieee80211_get_qos_ctl(hdr);
+ tx_cmd->tid_tspec = qc[0] & 0xf;
+ tx_flags &= ~TX_CMD_FLG_SEQ_CTL;
+ amsdu = *qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT;
+ } else if (ieee80211_is_back_req(fc)) {
+ struct ieee80211_bar *bar = (void *)skb->data;
+ u16 control = le16_to_cpu(bar->control);
+ u16 ssn = le16_to_cpu(bar->start_seq_num);
+
+ tx_flags |= TX_CMD_FLG_ACK | TX_CMD_FLG_BAR;
+ tx_cmd->tid_tspec = (control &
+ IEEE80211_BAR_CTRL_TID_INFO_MASK) >>
+ IEEE80211_BAR_CTRL_TID_INFO_SHIFT;
+ WARN_ON_ONCE(tx_cmd->tid_tspec >= IWL_MAX_TID_COUNT);
+ iwl_mvm_bar_check_trigger(mvm, bar->ra, tx_cmd->tid_tspec,
+ ssn);
+ } else {
+ if (ieee80211_is_data(fc))
+ tx_cmd->tid_tspec = IWL_TID_NON_QOS;
+ else
+ tx_cmd->tid_tspec = IWL_MAX_TID_COUNT;
+
+ if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
+ tx_flags |= TX_CMD_FLG_SEQ_CTL;
+ else
+ tx_flags &= ~TX_CMD_FLG_SEQ_CTL;
+ }
+
+ /* Default to 0 (BE) when tid_spec is set to IWL_MAX_TID_COUNT */
+ if (tx_cmd->tid_tspec < IWL_MAX_TID_COUNT)
+ ac = tid_to_mac80211_ac[tx_cmd->tid_tspec];
+ else
+ ac = tid_to_mac80211_ac[0];
+
+ tx_flags |= iwl_mvm_bt_coex_tx_prio(mvm, hdr, info, ac) <<
+ TX_CMD_FLG_BT_PRIO_POS;
+
+ if (ieee80211_is_mgmt(fc)) {
+ if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
+ tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_ASSOC);
+ else if (ieee80211_is_action(fc))
+ tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE);
+ else
+ tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT);
+
+ /* The spec allows Action frames in A-MPDU, we don't support
+ * it
+ */
+ WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_AMPDU);
+ } else if (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO) {
+ tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT);
+ } else {
+ tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE);
+ }
+
+ if (ieee80211_is_data(fc) && len > mvm->rts_threshold &&
+ !is_multicast_ether_addr(hdr->addr1))
+ tx_flags |= TX_CMD_FLG_PROT_REQUIRE;
+
+ if (fw_has_capa(&mvm->fw->ucode_capa,
+ IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT) &&
+ ieee80211_action_contains_tpc(skb))
+ tx_flags |= TX_CMD_FLG_WRITE_TX_POWER;
+
+ tx_cmd->tx_flags = cpu_to_le32(tx_flags);
+ /* Total # bytes to be transmitted - PCIe code will adjust for A-MSDU */
+ tx_cmd->len = cpu_to_le16((u16)skb->len);
+ tx_cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
+ tx_cmd->sta_id = sta_id;
+
+ tx_cmd->offload_assist =
+ cpu_to_le16(iwl_mvm_tx_csum_pre_bz(mvm, skb, info, amsdu));
+}
+
+static u32 iwl_mvm_get_tx_ant(struct iwl_mvm *mvm,
+ struct ieee80211_tx_info *info,
+ struct ieee80211_sta *sta, __le16 fc)
+{
+ if (info->band == NL80211_BAND_2GHZ &&
+ !iwl_mvm_bt_coex_is_shared_ant_avail(mvm))
+ return mvm->cfg->non_shared_ant << RATE_MCS_ANT_POS;
+
+ if (sta && ieee80211_is_data(fc)) {
+ struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+
+ return BIT(mvmsta->tx_ant) << RATE_MCS_ANT_POS;
+ }
+
+ return BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS;
+}
+
+static u32 iwl_mvm_get_tx_rate(struct iwl_mvm *mvm,
+ struct ieee80211_tx_info *info,
+ struct ieee80211_sta *sta, __le16 fc)
+{
+ int rate_idx = -1;
+ u8 rate_plcp;
+ u32 rate_flags = 0;
+ bool is_cck;
+
+ /* info->control is only relevant for non HW rate control */
+ if (!ieee80211_hw_check(mvm->hw, HAS_RATE_CONTROL)) {
+ /* HT rate doesn't make sense for a non data frame */
+ WARN_ONCE(info->control.rates[0].flags & IEEE80211_TX_RC_MCS &&
+ !ieee80211_is_data(fc),
+ "Got a HT rate (flags:0x%x/mcs:%d/fc:0x%x/state:%d) for a non data frame\n",
+ info->control.rates[0].flags,
+ info->control.rates[0].idx,
+ le16_to_cpu(fc),
+ sta ? iwl_mvm_sta_from_mac80211(sta)->sta_state : -1);
+
+ rate_idx = info->control.rates[0].idx;
+ }
+
+ /* if the rate isn't a well known legacy rate, take the lowest one */
+ if (rate_idx < 0 || rate_idx >= IWL_RATE_COUNT_LEGACY)
+ rate_idx = rate_lowest_index(
+ &mvm->nvm_data->bands[info->band], sta);
+
+ /*
+ * For non 2 GHZ band, remap mac80211 rate
+ * indices into driver indices
+ */
+ if (info->band != NL80211_BAND_2GHZ)
+ rate_idx += IWL_FIRST_OFDM_RATE;
+
+ /* For 2.4 GHZ band, check that there is no need to remap */
+ BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
+
+ /* Get PLCP rate for tx_cmd->rate_n_flags */
+ rate_plcp = iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate_idx);
+ is_cck = (rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE);
+
+ /* Set CCK or OFDM flag */
+ if (iwl_fw_lookup_cmd_ver(mvm->fw, TX_CMD, 0) > 8) {
+ if (!is_cck)
+ rate_flags |= RATE_MCS_LEGACY_OFDM_MSK;
+ else
+ rate_flags |= RATE_MCS_CCK_MSK;
+ } else if (is_cck) {
+ rate_flags |= RATE_MCS_CCK_MSK_V1;
+ }
+
+ return (u32)rate_plcp | rate_flags;
+}
+
+static u32 iwl_mvm_get_tx_rate_n_flags(struct iwl_mvm *mvm,
+ struct ieee80211_tx_info *info,
+ struct ieee80211_sta *sta, __le16 fc)
+{
+ return iwl_mvm_get_tx_rate(mvm, info, sta, fc) |
+ iwl_mvm_get_tx_ant(mvm, info, sta, fc);
+}
+
+/*
+ * Sets the fields in the Tx cmd that are rate related
+ */
+void iwl_mvm_set_tx_cmd_rate(struct iwl_mvm *mvm, struct iwl_tx_cmd *tx_cmd,
+ struct ieee80211_tx_info *info,
+ struct ieee80211_sta *sta, __le16 fc)
+{
+ /* Set retry limit on RTS packets */
+ tx_cmd->rts_retry_limit = IWL_RTS_DFAULT_RETRY_LIMIT;
+
+ /* Set retry limit on DATA packets and Probe Responses*/
+ if (ieee80211_is_probe_resp(fc)) {
+ tx_cmd->data_retry_limit = IWL_MGMT_DFAULT_RETRY_LIMIT;
+ tx_cmd->rts_retry_limit =
+ min(tx_cmd->data_retry_limit, tx_cmd->rts_retry_limit);
+ } else if (ieee80211_is_back_req(fc)) {
+ tx_cmd->data_retry_limit = IWL_BAR_DFAULT_RETRY_LIMIT;
+ } else {
+ tx_cmd->data_retry_limit = IWL_DEFAULT_TX_RETRY;
+ }
+
+ /*
+ * for data packets, rate info comes from the table inside the fw. This
+ * table is controlled by LINK_QUALITY commands
+ */
+
+ if (ieee80211_is_data(fc) && sta) {
+ struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+
+ if (mvmsta->sta_state >= IEEE80211_STA_AUTHORIZED) {
+ tx_cmd->initial_rate_index = 0;
+ tx_cmd->tx_flags |= cpu_to_le32(TX_CMD_FLG_STA_RATE);
+ return;
+ }
+ } else if (ieee80211_is_back_req(fc)) {
+ tx_cmd->tx_flags |=
+ cpu_to_le32(TX_CMD_FLG_ACK | TX_CMD_FLG_BAR);
+ }
+
+ /* Set the rate in the TX cmd */
+ tx_cmd->rate_n_flags =
+ cpu_to_le32(iwl_mvm_get_tx_rate_n_flags(mvm, info, sta, fc));
+}
+
+static inline void iwl_mvm_set_tx_cmd_pn(struct ieee80211_tx_info *info,
+ u8 *crypto_hdr)
+{
+ struct ieee80211_key_conf *keyconf = info->control.hw_key;
+ u64 pn;
+
+ pn = atomic64_inc_return(&keyconf->tx_pn);
+ crypto_hdr[0] = pn;
+ crypto_hdr[2] = 0;
+ crypto_hdr[3] = 0x20 | (keyconf->keyidx << 6);
+ crypto_hdr[1] = pn >> 8;
+ crypto_hdr[4] = pn >> 16;
+ crypto_hdr[5] = pn >> 24;
+ crypto_hdr[6] = pn >> 32;
+ crypto_hdr[7] = pn >> 40;
+}
+
+/*
+ * Sets the fields in the Tx cmd that are crypto related
+ */
+static void iwl_mvm_set_tx_cmd_crypto(struct iwl_mvm *mvm,
+ struct ieee80211_tx_info *info,
+ struct iwl_tx_cmd *tx_cmd,
+ struct sk_buff *skb_frag,
+ int hdrlen)
+{
+ struct ieee80211_key_conf *keyconf = info->control.hw_key;
+ u8 *crypto_hdr = skb_frag->data + hdrlen;
+ enum iwl_tx_cmd_sec_ctrl type = TX_CMD_SEC_CCM;
+ u64 pn;
+
+ switch (keyconf->cipher) {
+ case WLAN_CIPHER_SUITE_CCMP:
+ iwl_mvm_set_tx_cmd_ccmp(info, tx_cmd);
+ iwl_mvm_set_tx_cmd_pn(info, crypto_hdr);
+ break;
+
+ case WLAN_CIPHER_SUITE_TKIP:
+ tx_cmd->sec_ctl = TX_CMD_SEC_TKIP;
+ pn = atomic64_inc_return(&keyconf->tx_pn);
+ ieee80211_tkip_add_iv(crypto_hdr, keyconf, pn);
+ ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key);
+ break;
+
+ case WLAN_CIPHER_SUITE_WEP104:
+ tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
+ fallthrough;
+ case WLAN_CIPHER_SUITE_WEP40:
+ tx_cmd->sec_ctl |= TX_CMD_SEC_WEP |
+ ((keyconf->keyidx << TX_CMD_SEC_WEP_KEY_IDX_POS) &
+ TX_CMD_SEC_WEP_KEY_IDX_MSK);
+
+ memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen);
+ break;
+ case WLAN_CIPHER_SUITE_GCMP:
+ case WLAN_CIPHER_SUITE_GCMP_256:
+ type = TX_CMD_SEC_GCMP;
+ fallthrough;
+ case WLAN_CIPHER_SUITE_CCMP_256:
+ /* TODO: Taking the key from the table might introduce a race
+ * when PTK rekeying is done, having an old packets with a PN
+ * based on the old key but the message encrypted with a new
+ * one.
+ * Need to handle this.
+ */
+ tx_cmd->sec_ctl |= type | TX_CMD_SEC_KEY_FROM_TABLE;
+ tx_cmd->key[0] = keyconf->hw_key_idx;
+ iwl_mvm_set_tx_cmd_pn(info, crypto_hdr);
+ break;
+ default:
+ tx_cmd->sec_ctl |= TX_CMD_SEC_EXT;
+ }
+}
+
+/*
+ * Allocates and sets the Tx cmd the driver data pointers in the skb
+ */
+static struct iwl_device_tx_cmd *
+iwl_mvm_set_tx_params(struct iwl_mvm *mvm, struct sk_buff *skb,
+ struct ieee80211_tx_info *info, int hdrlen,
+ struct ieee80211_sta *sta, u8 sta_id)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ struct iwl_device_tx_cmd *dev_cmd;
+ struct iwl_tx_cmd *tx_cmd;
+
+ dev_cmd = iwl_trans_alloc_tx_cmd(mvm->trans);
+
+ if (unlikely(!dev_cmd))
+ return NULL;
+
+ dev_cmd->hdr.cmd = TX_CMD;
+
+ if (iwl_mvm_has_new_tx_api(mvm)) {
+ u32 rate_n_flags = 0;
+ u16 flags = 0;
+ struct iwl_mvm_sta *mvmsta = sta ?
+ iwl_mvm_sta_from_mac80211(sta) : NULL;
+ bool amsdu = false;
+
+ if (ieee80211_is_data_qos(hdr->frame_control)) {
+ u8 *qc = ieee80211_get_qos_ctl(hdr);
+
+ amsdu = *qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT;
+ }
+
+ if (!info->control.hw_key)
+ flags |= IWL_TX_FLAGS_ENCRYPT_DIS;
+
+ /*
+ * For data and mgmt packets rate info comes from the fw. Only
+ * set rate/antenna for injected frames with fixed rate, or
+ * when no sta is given.
+ */
+ if (unlikely(!sta ||
+ info->control.flags & IEEE80211_TX_CTRL_RATE_INJECT)) {
+ flags |= IWL_TX_FLAGS_CMD_RATE;
+ rate_n_flags =
+ iwl_mvm_get_tx_rate_n_flags(mvm, info, sta,
+ hdr->frame_control);
+ } else if (!ieee80211_is_data(hdr->frame_control) ||
+ mvmsta->sta_state < IEEE80211_STA_AUTHORIZED) {
+ /* These are important frames */
+ flags |= IWL_TX_FLAGS_HIGH_PRI;
+ }
+
+ if (mvm->trans->trans_cfg->device_family >=
+ IWL_DEVICE_FAMILY_AX210) {
+ struct iwl_tx_cmd_gen3 *cmd = (void *)dev_cmd->payload;
+ u32 offload_assist = iwl_mvm_tx_csum(mvm, skb,
+ info, amsdu);
+
+ cmd->offload_assist = cpu_to_le32(offload_assist);
+
+ /* Total # bytes to be transmitted */
+ cmd->len = cpu_to_le16((u16)skb->len);
+
+ /* Copy MAC header from skb into command buffer */
+ memcpy(cmd->hdr, hdr, hdrlen);
+
+ cmd->flags = cpu_to_le16(flags);
+ cmd->rate_n_flags = cpu_to_le32(rate_n_flags);
+ } else {
+ struct iwl_tx_cmd_gen2 *cmd = (void *)dev_cmd->payload;
+ u16 offload_assist = iwl_mvm_tx_csum_pre_bz(mvm, skb,
+ info,
+ amsdu);
+
+ cmd->offload_assist = cpu_to_le16(offload_assist);
+
+ /* Total # bytes to be transmitted */
+ cmd->len = cpu_to_le16((u16)skb->len);
+
+ /* Copy MAC header from skb into command buffer */
+ memcpy(cmd->hdr, hdr, hdrlen);
+
+ cmd->flags = cpu_to_le32(flags);
+ cmd->rate_n_flags = cpu_to_le32(rate_n_flags);
+ }
+ goto out;
+ }
+
+ tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload;
+
+ if (info->control.hw_key)
+ iwl_mvm_set_tx_cmd_crypto(mvm, info, tx_cmd, skb, hdrlen);
+
+ iwl_mvm_set_tx_cmd(mvm, skb, tx_cmd, info, sta_id);
+
+ iwl_mvm_set_tx_cmd_rate(mvm, tx_cmd, info, sta, hdr->frame_control);
+
+ /* Copy MAC header from skb into command buffer */
+ memcpy(tx_cmd->hdr, hdr, hdrlen);
+
+out:
+ return dev_cmd;
+}
+
+static void iwl_mvm_skb_prepare_status(struct sk_buff *skb,
+ struct iwl_device_tx_cmd *cmd)
+{
+ struct ieee80211_tx_info *skb_info = IEEE80211_SKB_CB(skb);
+
+ memset(&skb_info->status, 0, sizeof(skb_info->status));
+ memset(skb_info->driver_data, 0, sizeof(skb_info->driver_data));
+
+ skb_info->driver_data[1] = cmd;
+}
+
+static int iwl_mvm_get_ctrl_vif_queue(struct iwl_mvm *mvm,
+ struct ieee80211_tx_info *info,
+ struct ieee80211_hdr *hdr)
+{
+ struct iwl_mvm_vif *mvmvif =
+ iwl_mvm_vif_from_mac80211(info->control.vif);
+ __le16 fc = hdr->frame_control;
+
+ switch (info->control.vif->type) {
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_ADHOC:
+ /*
+ * Non-bufferable frames use the broadcast station, thus they
+ * use the probe queue.
+ * Also take care of the case where we send a deauth to a
+ * station that we don't have, or similarly an association
+ * response (with non-success status) for a station we can't
+ * accept.
+ * Also, disassociate frames might happen, particular with
+ * reason 7 ("Class 3 frame received from nonassociated STA").
+ */
+ if (ieee80211_is_mgmt(fc) &&
+ (!ieee80211_is_bufferable_mmpdu(fc) ||
+ ieee80211_is_deauth(fc) || ieee80211_is_disassoc(fc)))
+ return mvm->probe_queue;
+
+ if (!ieee80211_has_order(fc) && !ieee80211_is_probe_req(fc) &&
+ is_multicast_ether_addr(hdr->addr1))
+ return mvmvif->cab_queue;
+
+ WARN_ONCE(info->control.vif->type != NL80211_IFTYPE_ADHOC,
+ "fc=0x%02x", le16_to_cpu(fc));
+ return mvm->probe_queue;
+ case NL80211_IFTYPE_P2P_DEVICE:
+ if (ieee80211_is_mgmt(fc))
+ return mvm->p2p_dev_queue;
+
+ WARN_ON_ONCE(1);
+ return mvm->p2p_dev_queue;
+ default:
+ WARN_ONCE(1, "Not a ctrl vif, no available queue\n");
+ return -1;
+ }
+}
+
+static void iwl_mvm_probe_resp_set_noa(struct iwl_mvm *mvm,
+ struct sk_buff *skb)
+{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct iwl_mvm_vif *mvmvif =
+ iwl_mvm_vif_from_mac80211(info->control.vif);
+ struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
+ int base_len = (u8 *)mgmt->u.probe_resp.variable - (u8 *)mgmt;
+ struct iwl_probe_resp_data *resp_data;
+ const u8 *ie;
+ u8 *pos;
+ u8 match[] = {
+ (WLAN_OUI_WFA >> 16) & 0xff,
+ (WLAN_OUI_WFA >> 8) & 0xff,
+ WLAN_OUI_WFA & 0xff,
+ WLAN_OUI_TYPE_WFA_P2P,
+ };
+
+ rcu_read_lock();
+
+ resp_data = rcu_dereference(mvmvif->probe_resp_data);
+ if (!resp_data)
+ goto out;
+
+ if (!resp_data->notif.noa_active)
+ goto out;
+
+ ie = cfg80211_find_ie_match(WLAN_EID_VENDOR_SPECIFIC,
+ mgmt->u.probe_resp.variable,
+ skb->len - base_len,
+ match, 4, 2);
+ if (!ie) {
+ IWL_DEBUG_TX(mvm, "probe resp doesn't have P2P IE\n");
+ goto out;
+ }
+
+ if (skb_tailroom(skb) < resp_data->noa_len) {
+ if (pskb_expand_head(skb, 0, resp_data->noa_len, GFP_ATOMIC)) {
+ IWL_ERR(mvm,
+ "Failed to reallocate probe resp\n");
+ goto out;
+ }
+ }
+
+ pos = skb_put(skb, resp_data->noa_len);
+
+ *pos++ = WLAN_EID_VENDOR_SPECIFIC;
+ /* Set length of IE body (not including ID and length itself) */
+ *pos++ = resp_data->noa_len - 2;
+ *pos++ = (WLAN_OUI_WFA >> 16) & 0xff;
+ *pos++ = (WLAN_OUI_WFA >> 8) & 0xff;
+ *pos++ = WLAN_OUI_WFA & 0xff;
+ *pos++ = WLAN_OUI_TYPE_WFA_P2P;
+
+ memcpy(pos, &resp_data->notif.noa_attr,
+ resp_data->noa_len - sizeof(struct ieee80211_vendor_ie));
+
+out:
+ rcu_read_unlock();
+}
+
+int iwl_mvm_tx_skb_non_sta(struct iwl_mvm *mvm, struct sk_buff *skb)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ struct ieee80211_tx_info info;
+ struct iwl_device_tx_cmd *dev_cmd;
+ u8 sta_id;
+ int hdrlen = ieee80211_hdrlen(hdr->frame_control);
+ __le16 fc = hdr->frame_control;
+ bool offchannel = IEEE80211_SKB_CB(skb)->flags &
+ IEEE80211_TX_CTL_TX_OFFCHAN;
+ int queue = -1;
+
+ if (IWL_MVM_NON_TRANSMITTING_AP && ieee80211_is_probe_resp(fc))
+ return -1;
+
+ memcpy(&info, skb->cb, sizeof(info));
+
+ if (WARN_ON_ONCE(skb->len > IEEE80211_MAX_DATA_LEN + hdrlen))
+ return -1;
+
+ if (WARN_ON_ONCE(info.flags & IEEE80211_TX_CTL_AMPDU))
+ return -1;
+
+ if (info.control.vif) {
+ struct iwl_mvm_vif *mvmvif =
+ iwl_mvm_vif_from_mac80211(info.control.vif);
+
+ if (info.control.vif->type == NL80211_IFTYPE_P2P_DEVICE ||
+ info.control.vif->type == NL80211_IFTYPE_AP ||
+ info.control.vif->type == NL80211_IFTYPE_ADHOC) {
+ if (!ieee80211_is_data(hdr->frame_control))
+ sta_id = mvmvif->bcast_sta.sta_id;
+ else
+ sta_id = mvmvif->mcast_sta.sta_id;
+
+ queue = iwl_mvm_get_ctrl_vif_queue(mvm, &info, hdr);
+ } else if (info.control.vif->type == NL80211_IFTYPE_MONITOR) {
+ queue = mvm->snif_queue;
+ sta_id = mvm->snif_sta.sta_id;
+ } else if (info.control.vif->type == NL80211_IFTYPE_STATION &&
+ offchannel) {
+ /*
+ * IWL_MVM_OFFCHANNEL_QUEUE is used for ROC packets
+ * that can be used in 2 different types of vifs, P2P &
+ * STATION.
+ * P2P uses the offchannel queue.
+ * STATION (HS2.0) uses the auxiliary context of the FW,
+ * and hence needs to be sent on the aux queue.
+ */
+ sta_id = mvm->aux_sta.sta_id;
+ queue = mvm->aux_queue;
+ }
+ }
+
+ if (queue < 0) {
+ IWL_ERR(mvm, "No queue was found. Dropping TX\n");
+ return -1;
+ }
+
+ if (unlikely(ieee80211_is_probe_resp(fc)))
+ iwl_mvm_probe_resp_set_noa(mvm, skb);
+
+ IWL_DEBUG_TX(mvm, "station Id %d, queue=%d\n", sta_id, queue);
+
+ dev_cmd = iwl_mvm_set_tx_params(mvm, skb, &info, hdrlen, NULL, sta_id);
+ if (!dev_cmd)
+ return -1;
+
+ /* From now on, we cannot access info->control */
+ iwl_mvm_skb_prepare_status(skb, dev_cmd);
+
+ if (iwl_trans_tx(mvm->trans, skb, dev_cmd, queue)) {
+ iwl_trans_free_tx_cmd(mvm->trans, dev_cmd);
+ return -1;
+ }
+
+ return 0;
+}
+
+unsigned int iwl_mvm_max_amsdu_size(struct iwl_mvm *mvm,
+ struct ieee80211_sta *sta, unsigned int tid)
+{
+ struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+ u8 ac = tid_to_mac80211_ac[tid];
+ enum nl80211_band band;
+ unsigned int txf;
+ unsigned int val;
+ int lmac;
+
+ /* For HE redirect to trigger based fifos */
+ if (sta->deflink.he_cap.has_he && !WARN_ON(!iwl_mvm_has_new_tx_api(mvm)))
+ ac += 4;
+
+ txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac);
+
+ /*
+ * Don't send an AMSDU that will be longer than the TXF.
+ * Add a security margin of 256 for the TX command + headers.
+ * We also want to have the start of the next packet inside the
+ * fifo to be able to send bursts.
+ */
+ val = mvmsta->max_amsdu_len;
+
+ if (hweight16(sta->valid_links) <= 1) {
+ if (sta->valid_links) {
+ struct ieee80211_bss_conf *link_conf;
+ unsigned int link = ffs(sta->valid_links) - 1;
+
+ rcu_read_lock();
+ link_conf = rcu_dereference(mvmsta->vif->link_conf[link]);
+ if (WARN_ON(!link_conf))
+ band = NL80211_BAND_2GHZ;
+ else
+ band = link_conf->chandef.chan->band;
+ rcu_read_unlock();
+ } else {
+ band = mvmsta->vif->bss_conf.chandef.chan->band;
+ }
+
+ lmac = iwl_mvm_get_lmac_id(mvm->fw, band);
+ } else if (fw_has_capa(&mvm->fw->ucode_capa,
+ IWL_UCODE_TLV_CAPA_CDB_SUPPORT)) {
+ /* for real MLO restrict to both LMACs if they exist */
+ lmac = IWL_LMAC_5G_INDEX;
+ val = min_t(unsigned int, val,
+ mvm->fwrt.smem_cfg.lmac[lmac].txfifo_size[txf] - 256);
+ lmac = IWL_LMAC_24G_INDEX;
+ } else {
+ lmac = IWL_LMAC_24G_INDEX;
+ }
+
+ return min_t(unsigned int, val,
+ mvm->fwrt.smem_cfg.lmac[lmac].txfifo_size[txf] - 256);
+}
+
+#ifdef CONFIG_INET
+
+static int
+iwl_mvm_tx_tso_segment(struct sk_buff *skb, unsigned int num_subframes,
+ netdev_features_t netdev_flags,
+ struct sk_buff_head *mpdus_skb)
+{
+ struct sk_buff *tmp, *next;
+ struct ieee80211_hdr *hdr = (void *)skb->data;
+ char cb[sizeof(skb->cb)];
+ u16 i = 0;
+ unsigned int tcp_payload_len;
+ unsigned int mss = skb_shinfo(skb)->gso_size;
+ bool ipv4 = (skb->protocol == htons(ETH_P_IP));
+ bool qos = ieee80211_is_data_qos(hdr->frame_control);
+ u16 ip_base_id = ipv4 ? ntohs(ip_hdr(skb)->id) : 0;
+
+ skb_shinfo(skb)->gso_size = num_subframes * mss;
+ memcpy(cb, skb->cb, sizeof(cb));
+
+ next = skb_gso_segment(skb, netdev_flags);
+ skb_shinfo(skb)->gso_size = mss;
+ skb_shinfo(skb)->gso_type = ipv4 ? SKB_GSO_TCPV4 : SKB_GSO_TCPV6;
+ if (WARN_ON_ONCE(IS_ERR(next)))
+ return -EINVAL;
+ else if (next)
+ consume_skb(skb);
+
+ skb_list_walk_safe(next, tmp, next) {
+ memcpy(tmp->cb, cb, sizeof(tmp->cb));
+ /*
+ * Compute the length of all the data added for the A-MSDU.
+ * This will be used to compute the length to write in the TX
+ * command. We have: SNAP + IP + TCP for n -1 subframes and
+ * ETH header for n subframes.
+ */
+ tcp_payload_len = skb_tail_pointer(tmp) -
+ skb_transport_header(tmp) -
+ tcp_hdrlen(tmp) + tmp->data_len;
+
+ if (ipv4)
+ ip_hdr(tmp)->id = htons(ip_base_id + i * num_subframes);
+
+ if (tcp_payload_len > mss) {
+ skb_shinfo(tmp)->gso_size = mss;
+ skb_shinfo(tmp)->gso_type = ipv4 ? SKB_GSO_TCPV4 :
+ SKB_GSO_TCPV6;
+ } else {
+ if (qos) {
+ u8 *qc;
+
+ if (ipv4)
+ ip_send_check(ip_hdr(tmp));
+
+ qc = ieee80211_get_qos_ctl((void *)tmp->data);
+ *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
+ }
+ skb_shinfo(tmp)->gso_size = 0;
+ }
+
+ skb_mark_not_on_list(tmp);
+ __skb_queue_tail(mpdus_skb, tmp);
+ i++;
+ }
+
+ return 0;
+}
+
+static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb,
+ struct ieee80211_tx_info *info,
+ struct ieee80211_sta *sta,
+ struct sk_buff_head *mpdus_skb)
+{
+ struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+ struct ieee80211_hdr *hdr = (void *)skb->data;
+ unsigned int mss = skb_shinfo(skb)->gso_size;
+ unsigned int num_subframes, tcp_payload_len, subf_len, max_amsdu_len;
+ u16 snap_ip_tcp, pad;
+ netdev_features_t netdev_flags = NETIF_F_CSUM_MASK | NETIF_F_SG;
+ u8 tid;
+
+ snap_ip_tcp = 8 + skb_transport_header(skb) - skb_network_header(skb) +
+ tcp_hdrlen(skb);
+
+ if (!mvmsta->max_amsdu_len ||
+ !ieee80211_is_data_qos(hdr->frame_control) ||
+ !mvmsta->amsdu_enabled)
+ return iwl_mvm_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb);
+
+ /*
+ * Do not build AMSDU for IPv6 with extension headers.
+ * ask stack to segment and checkum the generated MPDUs for us.
+ */
+ if (skb->protocol == htons(ETH_P_IPV6) &&
+ ((struct ipv6hdr *)skb_network_header(skb))->nexthdr !=
+ IPPROTO_TCP) {
+ netdev_flags &= ~NETIF_F_CSUM_MASK;
+ return iwl_mvm_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb);
+ }
+
+ tid = ieee80211_get_tid(hdr);
+ if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
+ return -EINVAL;
+
+ /*
+ * No need to lock amsdu_in_ampdu_allowed since it can't be modified
+ * during an BA session.
+ */
+ if ((info->flags & IEEE80211_TX_CTL_AMPDU &&
+ !mvmsta->tid_data[tid].amsdu_in_ampdu_allowed) ||
+ !(mvmsta->amsdu_enabled & BIT(tid)))
+ return iwl_mvm_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb);
+
+ /*
+ * Take the min of ieee80211 station and mvm station
+ */
+ max_amsdu_len =
+ min_t(unsigned int, sta->cur->max_amsdu_len,
+ iwl_mvm_max_amsdu_size(mvm, sta, tid));
+
+ /*
+ * Limit A-MSDU in A-MPDU to 4095 bytes when VHT is not
+ * supported. This is a spec requirement (IEEE 802.11-2015
+ * section 8.7.3 NOTE 3).
+ */
+ if (info->flags & IEEE80211_TX_CTL_AMPDU &&
+ !sta->deflink.vht_cap.vht_supported)
+ max_amsdu_len = min_t(unsigned int, max_amsdu_len, 4095);
+
+ /* Sub frame header + SNAP + IP header + TCP header + MSS */
+ subf_len = sizeof(struct ethhdr) + snap_ip_tcp + mss;
+ pad = (4 - subf_len) & 0x3;
+
+ /*
+ * If we have N subframes in the A-MSDU, then the A-MSDU's size is
+ * N * subf_len + (N - 1) * pad.
+ */
+ num_subframes = (max_amsdu_len + pad) / (subf_len + pad);
+
+ if (sta->max_amsdu_subframes &&
+ num_subframes > sta->max_amsdu_subframes)
+ num_subframes = sta->max_amsdu_subframes;
+
+ tcp_payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) -
+ tcp_hdrlen(skb) + skb->data_len;
+
+ /*
+ * Make sure we have enough TBs for the A-MSDU:
+ * 2 for each subframe
+ * 1 more for each fragment
+ * 1 more for the potential data in the header
+ */
+ if ((num_subframes * 2 + skb_shinfo(skb)->nr_frags + 1) >
+ mvm->trans->max_skb_frags)
+ num_subframes = 1;
+
+ if (num_subframes > 1)
+ *ieee80211_get_qos_ctl(hdr) |= IEEE80211_QOS_CTL_A_MSDU_PRESENT;
+
+ /* This skb fits in one single A-MSDU */
+ if (num_subframes * mss >= tcp_payload_len) {
+ __skb_queue_tail(mpdus_skb, skb);
+ return 0;
+ }
+
+ /*
+ * Trick the segmentation function to make it
+ * create SKBs that can fit into one A-MSDU.
+ */
+ return iwl_mvm_tx_tso_segment(skb, num_subframes, netdev_flags,
+ mpdus_skb);
+}
+#else /* CONFIG_INET */
+static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb,
+ struct ieee80211_tx_info *info,
+ struct ieee80211_sta *sta,
+ struct sk_buff_head *mpdus_skb)
+{
+ /* Impossible to get TSO with CONFIG_INET */
+ WARN_ON(1);
+
+ return -1;
+}
+#endif
+
+/* Check if there are any timed-out TIDs on a given shared TXQ */
+static bool iwl_mvm_txq_should_update(struct iwl_mvm *mvm, int txq_id)
+{
+ unsigned long queue_tid_bitmap = mvm->queue_info[txq_id].tid_bitmap;
+ unsigned long now = jiffies;
+ int tid;
+
+ if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
+ return false;
+
+ for_each_set_bit(tid, &queue_tid_bitmap, IWL_MAX_TID_COUNT + 1) {
+ if (time_before(mvm->queue_info[txq_id].last_frame_time[tid] +
+ IWL_MVM_DQA_QUEUE_TIMEOUT, now))
+ return true;
+ }
+
+ return false;
+}
+
+static void iwl_mvm_tx_airtime(struct iwl_mvm *mvm,
+ struct iwl_mvm_sta *mvmsta,
+ int airtime)
+{
+ int mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK;
+ struct iwl_mvm_tcm_mac *mdata;
+
+ if (mac >= NUM_MAC_INDEX_DRIVER)
+ return;
+
+ mdata = &mvm->tcm.data[mac];
+
+ if (mvm->tcm.paused)
+ return;
+
+ if (time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
+ schedule_delayed_work(&mvm->tcm.work, 0);
+
+ mdata->tx.airtime += airtime;
+}
+
+static int iwl_mvm_tx_pkt_queued(struct iwl_mvm *mvm,
+ struct iwl_mvm_sta *mvmsta, int tid)
+{
+ u32 ac = tid_to_mac80211_ac[tid];
+ int mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK;
+ struct iwl_mvm_tcm_mac *mdata;
+
+ if (mac >= NUM_MAC_INDEX_DRIVER)
+ return -EINVAL;
+
+ mdata = &mvm->tcm.data[mac];
+
+ mdata->tx.pkts[ac]++;
+
+ return 0;
+}
+
+/*
+ * Sets the fields in the Tx cmd that are crypto related.
+ *
+ * This function must be called with BHs disabled.
+ */
+static int iwl_mvm_tx_mpdu(struct iwl_mvm *mvm, struct sk_buff *skb,
+ struct ieee80211_tx_info *info,
+ struct ieee80211_sta *sta)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ struct iwl_mvm_sta *mvmsta;
+ struct iwl_device_tx_cmd *dev_cmd;
+ __le16 fc;
+ u16 seq_number = 0;
+ u8 tid = IWL_MAX_TID_COUNT;
+ u16 txq_id;
+ bool is_ampdu = false;
+ int hdrlen;
+
+ mvmsta = iwl_mvm_sta_from_mac80211(sta);
+ fc = hdr->frame_control;
+ hdrlen = ieee80211_hdrlen(fc);
+
+ if (IWL_MVM_NON_TRANSMITTING_AP && ieee80211_is_probe_resp(fc))
+ return -1;
+
+ if (WARN_ON_ONCE(!mvmsta))
+ return -1;
+
+ if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_INVALID_STA))
+ return -1;
+
+ if (unlikely(ieee80211_is_any_nullfunc(fc)) && sta->deflink.he_cap.has_he)
+ return -1;
+
+ if (unlikely(ieee80211_is_probe_resp(fc)))
+ iwl_mvm_probe_resp_set_noa(mvm, skb);
+
+ dev_cmd = iwl_mvm_set_tx_params(mvm, skb, info, hdrlen,
+ sta, mvmsta->sta_id);
+ if (!dev_cmd)
+ goto drop;
+
+ /*
+ * we handle that entirely ourselves -- for uAPSD the firmware
+ * will always send a notification, and for PS-Poll responses
+ * we'll notify mac80211 when getting frame status
+ */
+ info->flags &= ~IEEE80211_TX_STATUS_EOSP;
+
+ spin_lock(&mvmsta->lock);
+
+ /* nullfunc frames should go to the MGMT queue regardless of QOS,
+ * the condition of !ieee80211_is_qos_nullfunc(fc) keeps the default
+ * assignment of MGMT TID
+ */
+ if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) {
+ tid = ieee80211_get_tid(hdr);
+ if (WARN_ONCE(tid >= IWL_MAX_TID_COUNT, "Invalid TID %d", tid))
+ goto drop_unlock_sta;
+
+ is_ampdu = info->flags & IEEE80211_TX_CTL_AMPDU;
+ if (WARN_ONCE(is_ampdu &&
+ mvmsta->tid_data[tid].state != IWL_AGG_ON,
+ "Invalid internal agg state %d for TID %d",
+ mvmsta->tid_data[tid].state, tid))
+ goto drop_unlock_sta;
+
+ seq_number = mvmsta->tid_data[tid].seq_number;
+ seq_number &= IEEE80211_SCTL_SEQ;
+
+ if (!iwl_mvm_has_new_tx_api(mvm)) {
+ struct iwl_tx_cmd *tx_cmd = (void *)dev_cmd->payload;
+
+ hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
+ hdr->seq_ctrl |= cpu_to_le16(seq_number);
+ /* update the tx_cmd hdr as it was already copied */
+ tx_cmd->hdr->seq_ctrl = hdr->seq_ctrl;
+ }
+ } else if (ieee80211_is_data(fc) && !ieee80211_is_data_qos(fc)) {
+ tid = IWL_TID_NON_QOS;
+ }
+
+ txq_id = mvmsta->tid_data[tid].txq_id;
+
+ WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM);
+
+ if (WARN_ONCE(txq_id == IWL_MVM_INVALID_QUEUE, "Invalid TXQ id")) {
+ iwl_trans_free_tx_cmd(mvm->trans, dev_cmd);
+ spin_unlock(&mvmsta->lock);
+ return -1;
+ }
+
+ if (!iwl_mvm_has_new_tx_api(mvm)) {
+ /* Keep track of the time of the last frame for this RA/TID */
+ mvm->queue_info[txq_id].last_frame_time[tid] = jiffies;
+
+ /*
+ * If we have timed-out TIDs - schedule the worker that will
+ * reconfig the queues and update them
+ *
+ * Note that the no lock is taken here in order to not serialize
+ * the TX flow. This isn't dangerous because scheduling
+ * mvm->add_stream_wk can't ruin the state, and if we DON'T
+ * schedule it due to some race condition then next TX we get
+ * here we will.
+ */
+ if (unlikely(mvm->queue_info[txq_id].status ==
+ IWL_MVM_QUEUE_SHARED &&
+ iwl_mvm_txq_should_update(mvm, txq_id)))
+ schedule_work(&mvm->add_stream_wk);
+ }
+
+ IWL_DEBUG_TX(mvm, "TX to [%d|%d] Q:%d - seq: 0x%x len %d\n",
+ mvmsta->sta_id, tid, txq_id,
+ IEEE80211_SEQ_TO_SN(seq_number), skb->len);
+
+ /* From now on, we cannot access info->control */
+ iwl_mvm_skb_prepare_status(skb, dev_cmd);
+
+ /*
+ * The IV is introduced by the HW for new tx api, and it is not present
+ * in the skb, hence, don't tell iwl_mvm_mei_tx_copy_to_csme about the
+ * IV for those devices.
+ */
+ if (ieee80211_is_data(fc))
+ iwl_mvm_mei_tx_copy_to_csme(mvm, skb,
+ info->control.hw_key &&
+ !iwl_mvm_has_new_tx_api(mvm) ?
+ info->control.hw_key->iv_len : 0);
+
+ if (iwl_trans_tx(mvm->trans, skb, dev_cmd, txq_id))
+ goto drop_unlock_sta;
+
+ if (tid < IWL_MAX_TID_COUNT && !ieee80211_has_morefrags(fc))
+ mvmsta->tid_data[tid].seq_number = seq_number + 0x10;
+
+ spin_unlock(&mvmsta->lock);
+
+ if (iwl_mvm_tx_pkt_queued(mvm, mvmsta,
+ tid == IWL_MAX_TID_COUNT ? 0 : tid))
+ goto drop;
+
+ return 0;
+
+drop_unlock_sta:
+ iwl_trans_free_tx_cmd(mvm->trans, dev_cmd);
+ spin_unlock(&mvmsta->lock);
+drop:
+ IWL_DEBUG_TX(mvm, "TX to [%d|%d] dropped\n", mvmsta->sta_id, tid);
+ return -1;
+}
+
+int iwl_mvm_tx_skb_sta(struct iwl_mvm *mvm, struct sk_buff *skb,
+ struct ieee80211_sta *sta)
+{
+ struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+ struct ieee80211_tx_info info;
+ struct sk_buff_head mpdus_skbs;
+ unsigned int payload_len;
+ int ret;
+ struct sk_buff *orig_skb = skb;
+
+ if (WARN_ON_ONCE(!mvmsta))
+ return -1;
+
+ if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_INVALID_STA))
+ return -1;
+
+ memcpy(&info, skb->cb, sizeof(info));
+
+ if (!skb_is_gso(skb))
+ return iwl_mvm_tx_mpdu(mvm, skb, &info, sta);
+
+ payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) -
+ tcp_hdrlen(skb) + skb->data_len;
+
+ if (payload_len <= skb_shinfo(skb)->gso_size)
+ return iwl_mvm_tx_mpdu(mvm, skb, &info, sta);
+
+ __skb_queue_head_init(&mpdus_skbs);
+
+ ret = iwl_mvm_tx_tso(mvm, skb, &info, sta, &mpdus_skbs);
+ if (ret)
+ return ret;
+
+ if (WARN_ON(skb_queue_empty(&mpdus_skbs)))
+ return ret;
+
+ while (!skb_queue_empty(&mpdus_skbs)) {
+ skb = __skb_dequeue(&mpdus_skbs);
+
+ ret = iwl_mvm_tx_mpdu(mvm, skb, &info, sta);
+ if (ret) {
+ /* Free skbs created as part of TSO logic that have not yet been dequeued */
+ __skb_queue_purge(&mpdus_skbs);
+ /* skb here is not necessarily same as skb that entered this method,
+ * so free it explicitly.
+ */
+ if (skb == orig_skb)
+ ieee80211_free_txskb(mvm->hw, skb);
+ else
+ kfree_skb(skb);
+ /* there was error, but we consumed skb one way or another, so return 0 */
+ return 0;
+ }
+ }
+
+ return 0;
+}
+
+static void iwl_mvm_check_ratid_empty(struct iwl_mvm *mvm,
+ struct ieee80211_sta *sta, u8 tid)
+{
+ struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+ struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
+ struct ieee80211_vif *vif = mvmsta->vif;
+ u16 normalized_ssn;
+
+ lockdep_assert_held(&mvmsta->lock);
+
+ if ((tid_data->state == IWL_AGG_ON ||
+ tid_data->state == IWL_EMPTYING_HW_QUEUE_DELBA) &&
+ iwl_mvm_tid_queued(mvm, tid_data) == 0) {
+ /*
+ * Now that this aggregation or DQA queue is empty tell
+ * mac80211 so it knows we no longer have frames buffered for
+ * the station on this TID (for the TIM bitmap calculation.)
+ */
+ ieee80211_sta_set_buffered(sta, tid, false);
+ }
+
+ /*
+ * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
+ * to align the wrap around of ssn so we compare relevant values.
+ */
+ normalized_ssn = tid_data->ssn;
+ if (mvm->trans->trans_cfg->gen2)
+ normalized_ssn &= 0xff;
+
+ if (normalized_ssn != tid_data->next_reclaimed)
+ return;
+
+ switch (tid_data->state) {
+ case IWL_EMPTYING_HW_QUEUE_ADDBA:
+ IWL_DEBUG_TX_QUEUES(mvm,
+ "Can continue addBA flow ssn = next_recl = %d\n",
+ tid_data->next_reclaimed);
+ tid_data->state = IWL_AGG_STARTING;
+ ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
+ break;
+
+ case IWL_EMPTYING_HW_QUEUE_DELBA:
+ IWL_DEBUG_TX_QUEUES(mvm,
+ "Can continue DELBA flow ssn = next_recl = %d\n",
+ tid_data->next_reclaimed);
+ tid_data->state = IWL_AGG_OFF;
+ ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
+ break;
+
+ default:
+ break;
+ }
+}
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+const char *iwl_mvm_get_tx_fail_reason(u32 status)
+{
+#define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x
+#define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x
+
+ switch (status & TX_STATUS_MSK) {
+ case TX_STATUS_SUCCESS:
+ return "SUCCESS";
+ TX_STATUS_POSTPONE(DELAY);
+ TX_STATUS_POSTPONE(FEW_BYTES);
+ TX_STATUS_POSTPONE(BT_PRIO);
+ TX_STATUS_POSTPONE(QUIET_PERIOD);
+ TX_STATUS_POSTPONE(CALC_TTAK);
+ TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY);
+ TX_STATUS_FAIL(SHORT_LIMIT);
+ TX_STATUS_FAIL(LONG_LIMIT);
+ TX_STATUS_FAIL(UNDERRUN);
+ TX_STATUS_FAIL(DRAIN_FLOW);
+ TX_STATUS_FAIL(RFKILL_FLUSH);
+ TX_STATUS_FAIL(LIFE_EXPIRE);
+ TX_STATUS_FAIL(DEST_PS);
+ TX_STATUS_FAIL(HOST_ABORTED);
+ TX_STATUS_FAIL(BT_RETRY);
+ TX_STATUS_FAIL(STA_INVALID);
+ TX_STATUS_FAIL(FRAG_DROPPED);
+ TX_STATUS_FAIL(TID_DISABLE);
+ TX_STATUS_FAIL(FIFO_FLUSHED);
+ TX_STATUS_FAIL(SMALL_CF_POLL);
+ TX_STATUS_FAIL(FW_DROP);
+ TX_STATUS_FAIL(STA_COLOR_MISMATCH);
+ }
+
+ return "UNKNOWN";
+
+#undef TX_STATUS_FAIL
+#undef TX_STATUS_POSTPONE
+}
+#endif /* CONFIG_IWLWIFI_DEBUG */
+
+static int iwl_mvm_get_hwrate_chan_width(u32 chan_width)
+{
+ switch (chan_width) {
+ case RATE_MCS_CHAN_WIDTH_20:
+ return 0;
+ case RATE_MCS_CHAN_WIDTH_40:
+ return IEEE80211_TX_RC_40_MHZ_WIDTH;
+ case RATE_MCS_CHAN_WIDTH_80:
+ return IEEE80211_TX_RC_80_MHZ_WIDTH;
+ case RATE_MCS_CHAN_WIDTH_160:
+ return IEEE80211_TX_RC_160_MHZ_WIDTH;
+ default:
+ return 0;
+ }
+}
+
+void iwl_mvm_hwrate_to_tx_rate(u32 rate_n_flags,
+ enum nl80211_band band,
+ struct ieee80211_tx_rate *r)
+{
+ u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
+ u32 rate = format == RATE_MCS_HT_MSK ?
+ RATE_HT_MCS_INDEX(rate_n_flags) :
+ rate_n_flags & RATE_MCS_CODE_MSK;
+
+ r->flags |=
+ iwl_mvm_get_hwrate_chan_width(rate_n_flags &
+ RATE_MCS_CHAN_WIDTH_MSK);
+
+ if (rate_n_flags & RATE_MCS_SGI_MSK)
+ r->flags |= IEEE80211_TX_RC_SHORT_GI;
+ if (format == RATE_MCS_HT_MSK) {
+ r->flags |= IEEE80211_TX_RC_MCS;
+ r->idx = rate;
+ } else if (format == RATE_MCS_VHT_MSK) {
+ ieee80211_rate_set_vht(r, rate,
+ ((rate_n_flags & RATE_MCS_NSS_MSK) >>
+ RATE_MCS_NSS_POS) + 1);
+ r->flags |= IEEE80211_TX_RC_VHT_MCS;
+ } else if (format == RATE_MCS_HE_MSK) {
+ /* mac80211 cannot do this without ieee80211_tx_status_ext()
+ * but it only matters for radiotap */
+ r->idx = 0;
+ } else {
+ r->idx = iwl_mvm_legacy_hw_idx_to_mac80211_idx(rate_n_flags,
+ band);
+ }
+}
+
+void iwl_mvm_hwrate_to_tx_rate_v1(u32 rate_n_flags,
+ enum nl80211_band band,
+ struct ieee80211_tx_rate *r)
+{
+ if (rate_n_flags & RATE_HT_MCS_GF_MSK)
+ r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
+
+ r->flags |=
+ iwl_mvm_get_hwrate_chan_width(rate_n_flags &
+ RATE_MCS_CHAN_WIDTH_MSK_V1);
+
+ if (rate_n_flags & RATE_MCS_SGI_MSK_V1)
+ r->flags |= IEEE80211_TX_RC_SHORT_GI;
+ if (rate_n_flags & RATE_MCS_HT_MSK_V1) {
+ r->flags |= IEEE80211_TX_RC_MCS;
+ r->idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK_V1;
+ } else if (rate_n_flags & RATE_MCS_VHT_MSK_V1) {
+ ieee80211_rate_set_vht(
+ r, rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK,
+ ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
+ RATE_VHT_MCS_NSS_POS) + 1);
+ r->flags |= IEEE80211_TX_RC_VHT_MCS;
+ } else {
+ r->idx = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
+ band);
+ }
+}
+
+/*
+ * translate ucode response to mac80211 tx status control values
+ */
+static void iwl_mvm_hwrate_to_tx_status(const struct iwl_fw *fw,
+ u32 rate_n_flags,
+ struct ieee80211_tx_info *info)
+{
+ struct ieee80211_tx_rate *r = &info->status.rates[0];
+
+ if (iwl_fw_lookup_notif_ver(fw, LONG_GROUP,
+ TX_CMD, 0) <= 6)
+ rate_n_flags = iwl_new_rate_from_v1(rate_n_flags);
+
+ info->status.antenna =
+ ((rate_n_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS);
+ iwl_mvm_hwrate_to_tx_rate(rate_n_flags,
+ info->band, r);
+}
+
+static void iwl_mvm_tx_status_check_trigger(struct iwl_mvm *mvm,
+ u32 status, __le16 frame_control)
+{
+ struct iwl_fw_dbg_trigger_tlv *trig;
+ struct iwl_fw_dbg_trigger_tx_status *status_trig;
+ int i;
+
+ if ((status & TX_STATUS_MSK) != TX_STATUS_SUCCESS) {
+ enum iwl_fw_ini_time_point tp =
+ IWL_FW_INI_TIME_POINT_TX_FAILED;
+
+ if (ieee80211_is_action(frame_control))
+ tp = IWL_FW_INI_TIME_POINT_TX_WFD_ACTION_FRAME_FAILED;
+
+ iwl_dbg_tlv_time_point(&mvm->fwrt,
+ tp, NULL);
+ return;
+ }
+
+ trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL,
+ FW_DBG_TRIGGER_TX_STATUS);
+ if (!trig)
+ return;
+
+ status_trig = (void *)trig->data;
+
+ for (i = 0; i < ARRAY_SIZE(status_trig->statuses); i++) {
+ /* don't collect on status 0 */
+ if (!status_trig->statuses[i].status)
+ break;
+
+ if (status_trig->statuses[i].status != (status & TX_STATUS_MSK))
+ continue;
+
+ iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
+ "Tx status %d was received",
+ status & TX_STATUS_MSK);
+ break;
+ }
+}
+
+/*
+ * iwl_mvm_get_scd_ssn - returns the SSN of the SCD
+ * @tx_resp: the Tx response from the fw (agg or non-agg)
+ *
+ * When the fw sends an AMPDU, it fetches the MPDUs one after the other. Since
+ * it can't know that everything will go well until the end of the AMPDU, it
+ * can't know in advance the number of MPDUs that will be sent in the current
+ * batch. This is why it writes the agg Tx response while it fetches the MPDUs.
+ * Hence, it can't know in advance what the SSN of the SCD will be at the end
+ * of the batch. This is why the SSN of the SCD is written at the end of the
+ * whole struct at a variable offset. This function knows how to cope with the
+ * variable offset and returns the SSN of the SCD.
+ */
+static inline u32 iwl_mvm_get_scd_ssn(struct iwl_mvm *mvm,
+ struct iwl_mvm_tx_resp *tx_resp)
+{
+ return le32_to_cpup((__le32 *)iwl_mvm_get_agg_status(mvm, tx_resp) +
+ tx_resp->frame_count) & 0xfff;
+}
+
+static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm,
+ struct iwl_rx_packet *pkt)
+{
+ struct ieee80211_sta *sta;
+ u16 sequence = le16_to_cpu(pkt->hdr.sequence);
+ int txq_id = SEQ_TO_QUEUE(sequence);
+ /* struct iwl_mvm_tx_resp_v3 is almost the same */
+ struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data;
+ int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid);
+ int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid);
+ struct agg_tx_status *agg_status =
+ iwl_mvm_get_agg_status(mvm, tx_resp);
+ u32 status = le16_to_cpu(agg_status->status);
+ u16 ssn = iwl_mvm_get_scd_ssn(mvm, tx_resp);
+ struct sk_buff_head skbs;
+ u8 skb_freed = 0;
+ u8 lq_color;
+ u16 next_reclaimed, seq_ctl;
+ bool is_ndp = false;
+
+ __skb_queue_head_init(&skbs);
+
+ if (iwl_mvm_has_new_tx_api(mvm))
+ txq_id = le16_to_cpu(tx_resp->tx_queue);
+
+ seq_ctl = le16_to_cpu(tx_resp->seq_ctl);
+
+ /* we can free until ssn % q.n_bd not inclusive */
+ iwl_trans_reclaim(mvm->trans, txq_id, ssn, &skbs, false);
+
+ while (!skb_queue_empty(&skbs)) {
+ struct sk_buff *skb = __skb_dequeue(&skbs);
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_hdr *hdr = (void *)skb->data;
+ bool flushed = false;
+
+ skb_freed++;
+
+ iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
+
+ memset(&info->status, 0, sizeof(info->status));
+ info->flags &= ~(IEEE80211_TX_STAT_ACK | IEEE80211_TX_STAT_TX_FILTERED);
+
+ /* inform mac80211 about what happened with the frame */
+ switch (status & TX_STATUS_MSK) {
+ case TX_STATUS_SUCCESS:
+ case TX_STATUS_DIRECT_DONE:
+ info->flags |= IEEE80211_TX_STAT_ACK;
+ break;
+ case TX_STATUS_FAIL_FIFO_FLUSHED:
+ case TX_STATUS_FAIL_DRAIN_FLOW:
+ flushed = true;
+ break;
+ case TX_STATUS_FAIL_DEST_PS:
+ /* the FW should have stopped the queue and not
+ * return this status
+ */
+ IWL_ERR_LIMIT(mvm,
+ "FW reported TX filtered, status=0x%x, FC=0x%x\n",
+ status, le16_to_cpu(hdr->frame_control));
+ info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
+ break;
+ default:
+ break;
+ }
+
+ if ((status & TX_STATUS_MSK) != TX_STATUS_SUCCESS &&
+ ieee80211_is_mgmt(hdr->frame_control))
+ iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
+
+ /*
+ * If we are freeing multiple frames, mark all the frames
+ * but the first one as acked, since they were acknowledged
+ * before
+ * */
+ if (skb_freed > 1)
+ info->flags |= IEEE80211_TX_STAT_ACK;
+
+ iwl_mvm_tx_status_check_trigger(mvm, status, hdr->frame_control);
+
+ info->status.rates[0].count = tx_resp->failure_frame + 1;
+
+ iwl_mvm_hwrate_to_tx_status(mvm->fw,
+ le32_to_cpu(tx_resp->initial_rate),
+ info);
+
+ /* Don't assign the converted initial_rate, because driver
+ * TLC uses this and doesn't support the new FW rate
+ */
+ info->status.status_driver_data[1] =
+ (void *)(uintptr_t)le32_to_cpu(tx_resp->initial_rate);
+
+ /* Single frame failure in an AMPDU queue => send BAR */
+ if (info->flags & IEEE80211_TX_CTL_AMPDU &&
+ !(info->flags & IEEE80211_TX_STAT_ACK) &&
+ !(info->flags & IEEE80211_TX_STAT_TX_FILTERED) && !flushed)
+ info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
+ info->flags &= ~IEEE80211_TX_CTL_AMPDU;
+
+ /* W/A FW bug: seq_ctl is wrong upon failure / BAR frame */
+ if (ieee80211_is_back_req(hdr->frame_control))
+ seq_ctl = 0;
+ else if (status != TX_STATUS_SUCCESS)
+ seq_ctl = le16_to_cpu(hdr->seq_ctrl);
+
+ if (unlikely(!seq_ctl)) {
+ /*
+ * If it is an NDP, we can't update next_reclaim since
+ * its sequence control is 0. Note that for that same
+ * reason, NDPs are never sent to A-MPDU'able queues
+ * so that we can never have more than one freed frame
+ * for a single Tx resonse (see WARN_ON below).
+ */
+ if (ieee80211_is_qos_nullfunc(hdr->frame_control))
+ is_ndp = true;
+ }
+
+ /*
+ * TODO: this is not accurate if we are freeing more than one
+ * packet.
+ */
+ info->status.tx_time =
+ le16_to_cpu(tx_resp->wireless_media_time);
+ BUILD_BUG_ON(ARRAY_SIZE(info->status.status_driver_data) < 1);
+ lq_color = TX_RES_RATE_TABLE_COL_GET(tx_resp->tlc_info);
+ info->status.status_driver_data[0] =
+ RS_DRV_DATA_PACK(lq_color, tx_resp->reduced_tpc);
+
+ ieee80211_tx_status(mvm->hw, skb);
+ }
+
+ /* This is an aggregation queue or might become one, so we use
+ * the ssn since: ssn = wifi seq_num % 256.
+ * The seq_ctl is the sequence control of the packet to which
+ * this Tx response relates. But if there is a hole in the
+ * bitmap of the BA we received, this Tx response may allow to
+ * reclaim the hole and all the subsequent packets that were
+ * already acked. In that case, seq_ctl != ssn, and the next
+ * packet to be reclaimed will be ssn and not seq_ctl. In that
+ * case, several packets will be reclaimed even if
+ * frame_count = 1.
+ *
+ * The ssn is the index (% 256) of the latest packet that has
+ * treated (acked / dropped) + 1.
+ */
+ next_reclaimed = ssn;
+
+ IWL_DEBUG_TX_REPLY(mvm,
+ "TXQ %d status %s (0x%08x)\n",
+ txq_id, iwl_mvm_get_tx_fail_reason(status), status);
+
+ IWL_DEBUG_TX_REPLY(mvm,
+ "\t\t\t\tinitial_rate 0x%x retries %d, idx=%d ssn=%d next_reclaimed=0x%x seq_ctl=0x%x\n",
+ le32_to_cpu(tx_resp->initial_rate),
+ tx_resp->failure_frame, SEQ_TO_INDEX(sequence),
+ ssn, next_reclaimed, seq_ctl);
+
+ rcu_read_lock();
+
+ sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
+ /*
+ * sta can't be NULL otherwise it'd mean that the sta has been freed in
+ * the firmware while we still have packets for it in the Tx queues.
+ */
+ if (WARN_ON_ONCE(!sta))
+ goto out;
+
+ if (!IS_ERR(sta)) {
+ struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+
+ iwl_mvm_tx_airtime(mvm, mvmsta,
+ le16_to_cpu(tx_resp->wireless_media_time));
+
+ if ((status & TX_STATUS_MSK) != TX_STATUS_SUCCESS &&
+ mvmsta->sta_state < IEEE80211_STA_AUTHORIZED)
+ iwl_mvm_toggle_tx_ant(mvm, &mvmsta->tx_ant);
+
+ if (sta->wme && tid != IWL_MGMT_TID) {
+ struct iwl_mvm_tid_data *tid_data =
+ &mvmsta->tid_data[tid];
+ bool send_eosp_ndp = false;
+
+ spin_lock_bh(&mvmsta->lock);
+
+ if (!is_ndp) {
+ tid_data->next_reclaimed = next_reclaimed;
+ IWL_DEBUG_TX_REPLY(mvm,
+ "Next reclaimed packet:%d\n",
+ next_reclaimed);
+ } else {
+ IWL_DEBUG_TX_REPLY(mvm,
+ "NDP - don't update next_reclaimed\n");
+ }
+
+ iwl_mvm_check_ratid_empty(mvm, sta, tid);
+
+ if (mvmsta->sleep_tx_count) {
+ mvmsta->sleep_tx_count--;
+ if (mvmsta->sleep_tx_count &&
+ !iwl_mvm_tid_queued(mvm, tid_data)) {
+ /*
+ * The number of frames in the queue
+ * dropped to 0 even if we sent less
+ * frames than we thought we had on the
+ * Tx queue.
+ * This means we had holes in the BA
+ * window that we just filled, ask
+ * mac80211 to send EOSP since the
+ * firmware won't know how to do that.
+ * Send NDP and the firmware will send
+ * EOSP notification that will trigger
+ * a call to ieee80211_sta_eosp().
+ */
+ send_eosp_ndp = true;
+ }
+ }
+
+ spin_unlock_bh(&mvmsta->lock);
+ if (send_eosp_ndp) {
+ iwl_mvm_sta_modify_sleep_tx_count(mvm, sta,
+ IEEE80211_FRAME_RELEASE_UAPSD,
+ 1, tid, false, false);
+ mvmsta->sleep_tx_count = 0;
+ ieee80211_send_eosp_nullfunc(sta, tid);
+ }
+ }
+
+ if (mvmsta->next_status_eosp) {
+ mvmsta->next_status_eosp = false;
+ ieee80211_sta_eosp(sta);
+ }
+ }
+out:
+ rcu_read_unlock();
+}
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+#define AGG_TX_STATE_(x) case AGG_TX_STATE_ ## x: return #x
+static const char *iwl_get_agg_tx_status(u16 status)
+{
+ switch (status & AGG_TX_STATE_STATUS_MSK) {
+ AGG_TX_STATE_(TRANSMITTED);
+ AGG_TX_STATE_(UNDERRUN);
+ AGG_TX_STATE_(BT_PRIO);
+ AGG_TX_STATE_(FEW_BYTES);
+ AGG_TX_STATE_(ABORT);
+ AGG_TX_STATE_(TX_ON_AIR_DROP);
+ AGG_TX_STATE_(LAST_SENT_TRY_CNT);
+ AGG_TX_STATE_(LAST_SENT_BT_KILL);
+ AGG_TX_STATE_(SCD_QUERY);
+ AGG_TX_STATE_(TEST_BAD_CRC32);
+ AGG_TX_STATE_(RESPONSE);
+ AGG_TX_STATE_(DUMP_TX);
+ AGG_TX_STATE_(DELAY_TX);
+ }
+
+ return "UNKNOWN";
+}
+
+static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm,
+ struct iwl_rx_packet *pkt)
+{
+ struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data;
+ struct agg_tx_status *frame_status =
+ iwl_mvm_get_agg_status(mvm, tx_resp);
+ int i;
+ bool tirgger_timepoint = false;
+
+ for (i = 0; i < tx_resp->frame_count; i++) {
+ u16 fstatus = le16_to_cpu(frame_status[i].status);
+ /* In case one frame wasn't transmitted trigger time point */
+ tirgger_timepoint |= ((fstatus & AGG_TX_STATE_STATUS_MSK) !=
+ AGG_TX_STATE_TRANSMITTED);
+ IWL_DEBUG_TX_REPLY(mvm,
+ "status %s (0x%04x), try-count (%d) seq (0x%x)\n",
+ iwl_get_agg_tx_status(fstatus),
+ fstatus & AGG_TX_STATE_STATUS_MSK,
+ (fstatus & AGG_TX_STATE_TRY_CNT_MSK) >>
+ AGG_TX_STATE_TRY_CNT_POS,
+ le16_to_cpu(frame_status[i].sequence));
+ }
+
+ if (tirgger_timepoint)
+ iwl_dbg_tlv_time_point(&mvm->fwrt,
+ IWL_FW_INI_TIME_POINT_TX_FAILED, NULL);
+
+}
+#else
+static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm,
+ struct iwl_rx_packet *pkt)
+{}
+#endif /* CONFIG_IWLWIFI_DEBUG */
+
+static void iwl_mvm_rx_tx_cmd_agg(struct iwl_mvm *mvm,
+ struct iwl_rx_packet *pkt)
+{
+ struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data;
+ int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid);
+ int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid);
+ u16 sequence = le16_to_cpu(pkt->hdr.sequence);
+ struct iwl_mvm_sta *mvmsta;
+ int queue = SEQ_TO_QUEUE(sequence);
+ struct ieee80211_sta *sta;
+
+ if (WARN_ON_ONCE(queue < IWL_MVM_DQA_MIN_DATA_QUEUE &&
+ (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)))
+ return;
+
+ iwl_mvm_rx_tx_cmd_agg_dbg(mvm, pkt);
+
+ rcu_read_lock();
+
+ mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id);
+
+ sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
+ if (WARN_ON_ONCE(!sta || !sta->wme)) {
+ rcu_read_unlock();
+ return;
+ }
+
+ if (!WARN_ON_ONCE(!mvmsta)) {
+ mvmsta->tid_data[tid].rate_n_flags =
+ le32_to_cpu(tx_resp->initial_rate);
+ mvmsta->tid_data[tid].tx_time =
+ le16_to_cpu(tx_resp->wireless_media_time);
+ mvmsta->tid_data[tid].lq_color =
+ TX_RES_RATE_TABLE_COL_GET(tx_resp->tlc_info);
+ iwl_mvm_tx_airtime(mvm, mvmsta,
+ le16_to_cpu(tx_resp->wireless_media_time));
+ }
+
+ rcu_read_unlock();
+}
+
+void iwl_mvm_rx_tx_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data;
+
+ if (tx_resp->frame_count == 1)
+ iwl_mvm_rx_tx_cmd_single(mvm, pkt);
+ else
+ iwl_mvm_rx_tx_cmd_agg(mvm, pkt);
+}
+
+static void iwl_mvm_tx_reclaim(struct iwl_mvm *mvm, int sta_id, int tid,
+ int txq, int index,
+ struct ieee80211_tx_info *tx_info, u32 rate,
+ bool is_flush)
+{
+ struct sk_buff_head reclaimed_skbs;
+ struct iwl_mvm_tid_data *tid_data = NULL;
+ struct ieee80211_sta *sta;
+ struct iwl_mvm_sta *mvmsta = NULL;
+ struct sk_buff *skb;
+ int freed;
+
+ if (WARN_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations ||
+ tid > IWL_MAX_TID_COUNT,
+ "sta_id %d tid %d", sta_id, tid))
+ return;
+
+ rcu_read_lock();
+
+ sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
+
+ /* Reclaiming frames for a station that has been deleted ? */
+ if (WARN_ON_ONCE(!sta)) {
+ rcu_read_unlock();
+ return;
+ }
+
+ __skb_queue_head_init(&reclaimed_skbs);
+
+ /*
+ * Release all TFDs before the SSN, i.e. all TFDs in front of
+ * block-ack window (we assume that they've been successfully
+ * transmitted ... if not, it's too late anyway).
+ */
+ iwl_trans_reclaim(mvm->trans, txq, index, &reclaimed_skbs, is_flush);
+
+ skb_queue_walk(&reclaimed_skbs, skb) {
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+
+ iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
+
+ memset(&info->status, 0, sizeof(info->status));
+ /* Packet was transmitted successfully, failures come as single
+ * frames because before failing a frame the firmware transmits
+ * it without aggregation at least once.
+ */
+ if (!is_flush)
+ info->flags |= IEEE80211_TX_STAT_ACK;
+ else
+ info->flags &= ~IEEE80211_TX_STAT_ACK;
+ }
+
+ /*
+ * It's possible to get a BA response after invalidating the rcu (rcu is
+ * invalidated in order to prevent new Tx from being sent, but there may
+ * be some frames already in-flight).
+ * In this case we just want to reclaim, and could skip all the
+ * sta-dependent stuff since it's in the middle of being removed
+ * anyways.
+ */
+ if (IS_ERR(sta))
+ goto out;
+
+ mvmsta = iwl_mvm_sta_from_mac80211(sta);
+ tid_data = &mvmsta->tid_data[tid];
+
+ if (tid_data->txq_id != txq) {
+ IWL_ERR(mvm,
+ "invalid reclaim request: Q %d, tid %d\n",
+ tid_data->txq_id, tid);
+ rcu_read_unlock();
+ return;
+ }
+
+ spin_lock_bh(&mvmsta->lock);
+
+ tid_data->next_reclaimed = index;
+
+ iwl_mvm_check_ratid_empty(mvm, sta, tid);
+
+ freed = 0;
+
+ /* pack lq color from tid_data along the reduced txp */
+ tx_info->status.status_driver_data[0] =
+ RS_DRV_DATA_PACK(tid_data->lq_color,
+ tx_info->status.status_driver_data[0]);
+ tx_info->status.status_driver_data[1] = (void *)(uintptr_t)rate;
+
+ skb_queue_walk(&reclaimed_skbs, skb) {
+ struct ieee80211_hdr *hdr = (void *)skb->data;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+
+ if (!is_flush) {
+ if (ieee80211_is_data_qos(hdr->frame_control))
+ freed++;
+ else
+ WARN_ON_ONCE(tid != IWL_MAX_TID_COUNT);
+ }
+
+ /* this is the first skb we deliver in this batch */
+ /* put the rate scaling data there */
+ if (freed == 1) {
+ info->flags |= IEEE80211_TX_STAT_AMPDU;
+ memcpy(&info->status, &tx_info->status,
+ sizeof(tx_info->status));
+ iwl_mvm_hwrate_to_tx_status(mvm->fw, rate, info);
+ }
+ }
+
+ spin_unlock_bh(&mvmsta->lock);
+
+ /* We got a BA notif with 0 acked or scd_ssn didn't progress which is
+ * possible (i.e. first MPDU in the aggregation wasn't acked)
+ * Still it's important to update RS about sent vs. acked.
+ */
+ if (!is_flush && skb_queue_empty(&reclaimed_skbs)) {
+ struct ieee80211_chanctx_conf *chanctx_conf = NULL;
+
+ if (mvmsta->vif)
+ chanctx_conf =
+ rcu_dereference(mvmsta->vif->bss_conf.chanctx_conf);
+
+ if (WARN_ON_ONCE(!chanctx_conf))
+ goto out;
+
+ tx_info->band = chanctx_conf->def.chan->band;
+ iwl_mvm_hwrate_to_tx_status(mvm->fw, rate, tx_info);
+
+ if (!iwl_mvm_has_tlc_offload(mvm)) {
+ IWL_DEBUG_TX_REPLY(mvm,
+ "No reclaim. Update rs directly\n");
+ iwl_mvm_rs_tx_status(mvm, sta, tid, tx_info, false);
+ }
+ }
+
+out:
+ rcu_read_unlock();
+
+ while (!skb_queue_empty(&reclaimed_skbs)) {
+ skb = __skb_dequeue(&reclaimed_skbs);
+ ieee80211_tx_status(mvm->hw, skb);
+ }
+}
+
+void iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
+ unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
+ int sta_id, tid, txq, index;
+ struct ieee80211_tx_info ba_info = {};
+ struct iwl_mvm_ba_notif *ba_notif;
+ struct iwl_mvm_tid_data *tid_data;
+ struct iwl_mvm_sta *mvmsta;
+
+ ba_info.flags = IEEE80211_TX_STAT_AMPDU;
+
+ if (iwl_mvm_has_new_tx_api(mvm)) {
+ struct iwl_mvm_compressed_ba_notif *ba_res =
+ (void *)pkt->data;
+ u8 lq_color = TX_RES_RATE_TABLE_COL_GET(ba_res->tlc_rate_info);
+ u16 tfd_cnt;
+ int i;
+
+ if (unlikely(sizeof(*ba_res) > pkt_len))
+ return;
+
+ sta_id = ba_res->sta_id;
+ ba_info.status.ampdu_ack_len = (u8)le16_to_cpu(ba_res->done);
+ ba_info.status.ampdu_len = (u8)le16_to_cpu(ba_res->txed);
+ ba_info.status.tx_time =
+ (u16)le32_to_cpu(ba_res->wireless_time);
+ ba_info.status.status_driver_data[0] =
+ (void *)(uintptr_t)ba_res->reduced_txp;
+
+ tfd_cnt = le16_to_cpu(ba_res->tfd_cnt);
+ if (!tfd_cnt || struct_size(ba_res, tfd, tfd_cnt) > pkt_len)
+ return;
+
+ rcu_read_lock();
+
+ mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id);
+ /*
+ * It's possible to get a BA response after invalidating the rcu
+ * (rcu is invalidated in order to prevent new Tx from being
+ * sent, but there may be some frames already in-flight).
+ * In this case we just want to reclaim, and could skip all the
+ * sta-dependent stuff since it's in the middle of being removed
+ * anyways.
+ */
+
+ /* Free per TID */
+ for (i = 0; i < tfd_cnt; i++) {
+ struct iwl_mvm_compressed_ba_tfd *ba_tfd =
+ &ba_res->tfd[i];
+
+ tid = ba_tfd->tid;
+ if (tid == IWL_MGMT_TID)
+ tid = IWL_MAX_TID_COUNT;
+
+ if (mvmsta)
+ mvmsta->tid_data[i].lq_color = lq_color;
+
+ iwl_mvm_tx_reclaim(mvm, sta_id, tid,
+ (int)(le16_to_cpu(ba_tfd->q_num)),
+ le16_to_cpu(ba_tfd->tfd_index),
+ &ba_info,
+ le32_to_cpu(ba_res->tx_rate), false);
+ }
+
+ if (mvmsta)
+ iwl_mvm_tx_airtime(mvm, mvmsta,
+ le32_to_cpu(ba_res->wireless_time));
+ rcu_read_unlock();
+
+ IWL_DEBUG_TX_REPLY(mvm,
+ "BA_NOTIFICATION Received from sta_id = %d, flags %x, sent:%d, acked:%d\n",
+ sta_id, le32_to_cpu(ba_res->flags),
+ le16_to_cpu(ba_res->txed),
+ le16_to_cpu(ba_res->done));
+ return;
+ }
+
+ ba_notif = (void *)pkt->data;
+ sta_id = ba_notif->sta_id;
+ tid = ba_notif->tid;
+ /* "flow" corresponds to Tx queue */
+ txq = le16_to_cpu(ba_notif->scd_flow);
+ /* "ssn" is start of block-ack Tx window, corresponds to index
+ * (in Tx queue's circular buffer) of first TFD/frame in window */
+ index = le16_to_cpu(ba_notif->scd_ssn);
+
+ rcu_read_lock();
+ mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id);
+ if (WARN_ON_ONCE(!mvmsta)) {
+ rcu_read_unlock();
+ return;
+ }
+
+ tid_data = &mvmsta->tid_data[tid];
+
+ ba_info.status.ampdu_ack_len = ba_notif->txed_2_done;
+ ba_info.status.ampdu_len = ba_notif->txed;
+ ba_info.status.tx_time = tid_data->tx_time;
+ ba_info.status.status_driver_data[0] =
+ (void *)(uintptr_t)ba_notif->reduced_txp;
+
+ rcu_read_unlock();
+
+ iwl_mvm_tx_reclaim(mvm, sta_id, tid, txq, index, &ba_info,
+ tid_data->rate_n_flags, false);
+
+ IWL_DEBUG_TX_REPLY(mvm,
+ "BA_NOTIFICATION Received from %pM, sta_id = %d\n",
+ ba_notif->sta_addr, ba_notif->sta_id);
+
+ IWL_DEBUG_TX_REPLY(mvm,
+ "TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = %d, scd_ssn = %d sent:%d, acked:%d\n",
+ ba_notif->tid, le16_to_cpu(ba_notif->seq_ctl),
+ le64_to_cpu(ba_notif->bitmap), txq, index,
+ ba_notif->txed, ba_notif->txed_2_done);
+
+ IWL_DEBUG_TX_REPLY(mvm, "reduced txp from ba notif %d\n",
+ ba_notif->reduced_txp);
+}
+
+/*
+ * Note that there are transports that buffer frames before they reach
+ * the firmware. This means that after flush_tx_path is called, the
+ * queue might not be empty. The race-free way to handle this is to:
+ * 1) set the station as draining
+ * 2) flush the Tx path
+ * 3) wait for the transport queues to be empty
+ */
+int iwl_mvm_flush_tx_path(struct iwl_mvm *mvm, u32 tfd_msk)
+{
+ int ret;
+ struct iwl_tx_path_flush_cmd_v1 flush_cmd = {
+ .queues_ctl = cpu_to_le32(tfd_msk),
+ .flush_ctl = cpu_to_le16(DUMP_TX_FIFO_FLUSH),
+ };
+
+ WARN_ON(iwl_mvm_has_new_tx_api(mvm));
+ ret = iwl_mvm_send_cmd_pdu(mvm, TXPATH_FLUSH, 0,
+ sizeof(flush_cmd), &flush_cmd);
+ if (ret)
+ IWL_ERR(mvm, "Failed to send flush command (%d)\n", ret);
+ return ret;
+}
+
+int iwl_mvm_flush_sta_tids(struct iwl_mvm *mvm, u32 sta_id, u16 tids)
+{
+ int ret;
+ struct iwl_tx_path_flush_cmd_rsp *rsp;
+ struct iwl_tx_path_flush_cmd flush_cmd = {
+ .sta_id = cpu_to_le32(sta_id),
+ .tid_mask = cpu_to_le16(tids),
+ };
+
+ struct iwl_host_cmd cmd = {
+ .id = TXPATH_FLUSH,
+ .len = { sizeof(flush_cmd), },
+ .data = { &flush_cmd, },
+ };
+
+ WARN_ON(!iwl_mvm_has_new_tx_api(mvm));
+
+ if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, TXPATH_FLUSH, 0) > 0)
+ cmd.flags |= CMD_WANT_SKB | CMD_SEND_IN_RFKILL;
+
+ IWL_DEBUG_TX_QUEUES(mvm, "flush for sta id %d tid mask 0x%x\n",
+ sta_id, tids);
+
+ ret = iwl_mvm_send_cmd(mvm, &cmd);
+
+ if (ret) {
+ IWL_ERR(mvm, "Failed to send flush command (%d)\n", ret);
+ return ret;
+ }
+
+ if (cmd.flags & CMD_WANT_SKB) {
+ int i;
+ int num_flushed_queues;
+
+ if (WARN_ON_ONCE(iwl_rx_packet_payload_len(cmd.resp_pkt) != sizeof(*rsp))) {
+ ret = -EIO;
+ goto free_rsp;
+ }
+
+ rsp = (void *)cmd.resp_pkt->data;
+
+ if (WARN_ONCE(le16_to_cpu(rsp->sta_id) != sta_id,
+ "sta_id %d != rsp_sta_id %d",
+ sta_id, le16_to_cpu(rsp->sta_id))) {
+ ret = -EIO;
+ goto free_rsp;
+ }
+
+ num_flushed_queues = le16_to_cpu(rsp->num_flushed_queues);
+ if (WARN_ONCE(num_flushed_queues > IWL_TX_FLUSH_QUEUE_RSP,
+ "num_flushed_queues %d", num_flushed_queues)) {
+ ret = -EIO;
+ goto free_rsp;
+ }
+
+ for (i = 0; i < num_flushed_queues; i++) {
+ struct ieee80211_tx_info tx_info = {};
+ struct iwl_flush_queue_info *queue_info = &rsp->queues[i];
+ int tid = le16_to_cpu(queue_info->tid);
+ int read_before = le16_to_cpu(queue_info->read_before_flush);
+ int read_after = le16_to_cpu(queue_info->read_after_flush);
+ int queue_num = le16_to_cpu(queue_info->queue_num);
+
+ if (tid == IWL_MGMT_TID)
+ tid = IWL_MAX_TID_COUNT;
+
+ IWL_DEBUG_TX_QUEUES(mvm,
+ "tid %d queue_id %d read-before %d read-after %d\n",
+ tid, queue_num, read_before, read_after);
+
+ iwl_mvm_tx_reclaim(mvm, sta_id, tid, queue_num, read_after,
+ &tx_info, 0, true);
+ }
+free_rsp:
+ iwl_free_resp(&cmd);
+ }
+ return ret;
+}
+
+int iwl_mvm_flush_sta(struct iwl_mvm *mvm, void *sta, bool internal)
+{
+ struct iwl_mvm_int_sta *int_sta = sta;
+ struct iwl_mvm_sta *mvm_sta = sta;
+
+ BUILD_BUG_ON(offsetof(struct iwl_mvm_int_sta, sta_id) !=
+ offsetof(struct iwl_mvm_sta, sta_id));
+
+ if (iwl_mvm_has_new_tx_api(mvm))
+ return iwl_mvm_flush_sta_tids(mvm, mvm_sta->sta_id, 0xffff);
+
+ if (internal)
+ return iwl_mvm_flush_tx_path(mvm, int_sta->tfd_queue_msk);
+
+ return iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk);
+}