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IEs for 802.11n should be converted from parameters passed from cfg80211 to TLVs appended to host command HOST_CMD_802_11_ASSOCIATE. For AP mode, IEs for 802.11n should be converted from parameters passed from cfg80211 to TLVs appened to host command HOST_CMD_UAP_SYS_CONFIG. Because resource limitation of FW, AMSDU and BA Rx buffer and reorder should be done by driver. Files in this commit will support 802.11n features based on above descriptions. Signed-off-by: David Lin --- drivers/net/wireless/nxp/nxpwifi/11n.c | 848 ++++++++++++++++ drivers/net/wireless/nxp/nxpwifi/11n.h | 161 ++++ drivers/net/wireless/nxp/nxpwifi/11n_aggr.c | 275 ++++++ drivers/net/wireless/nxp/nxpwifi/11n_aggr.h | 21 + .../net/wireless/nxp/nxpwifi/11n_rxreorder.c | 910 ++++++++++++++++++ .../net/wireless/nxp/nxpwifi/11n_rxreorder.h | 72 ++ 6 files changed, 2287 insertions(+) create mode 100644 drivers/net/wireless/nxp/nxpwifi/11n.c create mode 100644 drivers/net/wireless/nxp/nxpwifi/11n.h create mode 100644 drivers/net/wireless/nxp/nxpwifi/11n_aggr.c create mode 100644 drivers/net/wireless/nxp/nxpwifi/11n_aggr.h create mode 100644 drivers/net/wireless/nxp/nxpwifi/11n_rxreorder.c create mode 100644 drivers/net/wireless/nxp/nxpwifi/11n_rxreorder.h diff --git a/drivers/net/wireless/nxp/nxpwifi/11n.c b/drivers/net/wireless/nxp/nxpwifi/11n.c new file mode 100644 index 000000000000..a1b4e6e998a1 --- /dev/null +++ b/drivers/net/wireless/nxp/nxpwifi/11n.c @@ -0,0 +1,848 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * NXP Wireless LAN device driver: 802.11n + * + * Copyright 2011-2024 NXP + */ + +#include "cfg.h" +#include "util.h" +#include "fw.h" +#include "main.h" +#include "cmdevt.h" +#include "wmm.h" +#include "11n.h" + +/* Fills HT capability information field, AMPDU Parameters field, HT extended + * capability field, and supported MCS set fields. + * + * HT capability information field, AMPDU Parameters field, supported MCS set + * fields are retrieved from cfg80211 stack + * + * RD responder bit to set to clear in the extended capability header. + */ +int nxpwifi_fill_cap_info(struct nxpwifi_private *priv, u8 radio_type, + struct ieee80211_ht_cap *ht_cap) +{ + u16 ht_cap_info; + u16 bcn_ht_cap = le16_to_cpu(ht_cap->cap_info); + u16 ht_ext_cap = le16_to_cpu(ht_cap->extended_ht_cap_info); + struct ieee80211_supported_band *sband = + priv->wdev.wiphy->bands[radio_type]; + + if (WARN_ON_ONCE(!sband)) { + nxpwifi_dbg(priv->adapter, ERROR, "Invalid radio type!\n"); + return -EINVAL; + } + + ht_cap->ampdu_params_info = + (sband->ht_cap.ampdu_factor & + IEEE80211_HT_AMPDU_PARM_FACTOR) | + ((sband->ht_cap.ampdu_density << + IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT) & + IEEE80211_HT_AMPDU_PARM_DENSITY); + + memcpy((u8 *)&ht_cap->mcs, &sband->ht_cap.mcs, + sizeof(sband->ht_cap.mcs)); + + if (priv->bss_mode == NL80211_IFTYPE_STATION || + (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && + priv->adapter->sec_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_NONE)) + /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */ + SETHT_MCS32(ht_cap->mcs.rx_mask); + + /* Clear RD responder bit */ + ht_ext_cap &= ~IEEE80211_HT_EXT_CAP_RD_RESPONDER; + + ht_cap_info = sband->ht_cap.cap; + if (bcn_ht_cap) { + if (!(bcn_ht_cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)) + ht_cap_info &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; + if (!(bcn_ht_cap & IEEE80211_HT_CAP_SGI_40)) + ht_cap_info &= ~IEEE80211_HT_CAP_SGI_40; + if (!(bcn_ht_cap & IEEE80211_HT_CAP_40MHZ_INTOLERANT)) + ht_cap_info &= ~IEEE80211_HT_CAP_40MHZ_INTOLERANT; + } + ht_cap->cap_info = cpu_to_le16(ht_cap_info); + ht_cap->extended_ht_cap_info = cpu_to_le16(ht_ext_cap); + + if (ISSUPP_BEAMFORMING(priv->adapter->hw_dot_11n_dev_cap)) + ht_cap->tx_BF_cap_info = cpu_to_le32(NXPWIFI_DEF_11N_TX_BF_CAP); + + return 0; +} + +/* This function returns the pointer to an entry in BA Stream + * table which matches the requested BA status. + */ +static struct nxpwifi_tx_ba_stream_tbl * +nxpwifi_get_ba_status(struct nxpwifi_private *priv, + enum nxpwifi_ba_status ba_status) +{ + struct nxpwifi_tx_ba_stream_tbl *tx_ba_tsr_tbl; + + spin_lock_bh(&priv->tx_ba_stream_tbl_lock); + list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { + if (tx_ba_tsr_tbl->ba_status == ba_status) { + spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); + return tx_ba_tsr_tbl; + } + } + spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); + return NULL; +} + +/* This function handles the command response of delete a block + * ack request. + * + * The function checks the response success status and takes action + * accordingly (send an add BA request in case of success, or recreate + * the deleted stream in case of failure, if the add BA was also + * initiated by us). + */ +int nxpwifi_ret_11n_delba(struct nxpwifi_private *priv, + struct host_cmd_ds_command *resp) +{ + int tid; + struct nxpwifi_tx_ba_stream_tbl *tx_ba_tbl; + struct host_cmd_ds_11n_delba *del_ba = &resp->params.del_ba; + u16 del_ba_param_set = le16_to_cpu(del_ba->del_ba_param_set); + + tid = del_ba_param_set >> DELBA_TID_POS; + if (del_ba->del_result == BA_RESULT_SUCCESS) { + nxpwifi_del_ba_tbl(priv, tid, del_ba->peer_mac_addr, + TYPE_DELBA_SENT, + INITIATOR_BIT(del_ba_param_set)); + + tx_ba_tbl = nxpwifi_get_ba_status(priv, BA_SETUP_INPROGRESS); + if (tx_ba_tbl) + nxpwifi_send_addba(priv, tx_ba_tbl->tid, + tx_ba_tbl->ra); + } else { /* + * In case of failure, recreate the deleted stream in case + * we initiated the DELBA + */ + if (!INITIATOR_BIT(del_ba_param_set)) + return 0; + + nxpwifi_create_ba_tbl(priv, del_ba->peer_mac_addr, tid, + BA_SETUP_INPROGRESS); + + tx_ba_tbl = nxpwifi_get_ba_status(priv, BA_SETUP_INPROGRESS); + + if (tx_ba_tbl) + nxpwifi_del_ba_tbl(priv, tx_ba_tbl->tid, tx_ba_tbl->ra, + TYPE_DELBA_SENT, true); + } + + return 0; +} + +/* This function handles the command response of add a block + * ack request. + * + * Handling includes changing the header fields to CPU formats, checking + * the response success status and taking actions accordingly (delete the + * BA stream table in case of failure). + */ +int nxpwifi_ret_11n_addba_req(struct nxpwifi_private *priv, + struct host_cmd_ds_command *resp) +{ + int tid, tid_down; + struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &resp->params.add_ba_rsp; + struct nxpwifi_tx_ba_stream_tbl *tx_ba_tbl; + struct nxpwifi_ra_list_tbl *ra_list; + u16 block_ack_param_set = le16_to_cpu(add_ba_rsp->block_ack_param_set); + + add_ba_rsp->ssn = cpu_to_le16((le16_to_cpu(add_ba_rsp->ssn)) + & SSN_MASK); + + tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK) + >> BLOCKACKPARAM_TID_POS; + + tid_down = nxpwifi_wmm_downgrade_tid(priv, tid); + ra_list = nxpwifi_wmm_get_ralist_node(priv, tid_down, + add_ba_rsp->peer_mac_addr); + if (le16_to_cpu(add_ba_rsp->status_code) != BA_RESULT_SUCCESS) { + if (ra_list) { + ra_list->ba_status = BA_SETUP_NONE; + ra_list->amsdu_in_ampdu = false; + } + nxpwifi_del_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr, + TYPE_DELBA_SENT, true); + if (add_ba_rsp->add_rsp_result != BA_RESULT_TIMEOUT) + priv->aggr_prio_tbl[tid].ampdu_ap = + BA_STREAM_NOT_ALLOWED; + return 0; + } + + tx_ba_tbl = nxpwifi_get_ba_tbl(priv, tid, add_ba_rsp->peer_mac_addr); + if (tx_ba_tbl) { + nxpwifi_dbg(priv->adapter, EVENT, "info: BA stream complete\n"); + tx_ba_tbl->ba_status = BA_SETUP_COMPLETE; + if ((block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) && + priv->add_ba_param.tx_amsdu && + priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED) + tx_ba_tbl->amsdu = true; + else + tx_ba_tbl->amsdu = false; + if (ra_list) { + ra_list->amsdu_in_ampdu = tx_ba_tbl->amsdu; + ra_list->ba_status = BA_SETUP_COMPLETE; + } + } else { + nxpwifi_dbg(priv->adapter, ERROR, "BA stream not created\n"); + } + + return 0; +} + +/* This function prepares command of reconfigure Tx buffer. + * + * Preparation includes - + * - Setting command ID, action and proper size + * - Setting Tx buffer size (for SET only) + * - Ensuring correct endian-ness + */ +int nxpwifi_cmd_recfg_tx_buf(struct nxpwifi_private *priv, + struct host_cmd_ds_command *cmd, int cmd_action, + u16 *buf_size) +{ + struct host_cmd_ds_txbuf_cfg *tx_buf = &cmd->params.tx_buf; + u16 action = (u16)cmd_action; + + cmd->command = cpu_to_le16(HOST_CMD_RECONFIGURE_TX_BUFF); + cmd->size = + cpu_to_le16(sizeof(struct host_cmd_ds_txbuf_cfg) + S_DS_GEN); + tx_buf->action = cpu_to_le16(action); + switch (action) { + case HOST_ACT_GEN_SET: + nxpwifi_dbg(priv->adapter, CMD, + "cmd: set tx_buf=%d\n", *buf_size); + tx_buf->buff_size = cpu_to_le16(*buf_size); + break; + case HOST_ACT_GEN_GET: + default: + tx_buf->buff_size = 0; + break; + } + return 0; +} + +/* This function prepares command of AMSDU aggregation control. + * + * Preparation includes - + * - Setting command ID, action and proper size + * - Setting AMSDU control parameters (for SET only) + * - Ensuring correct endian-ness + */ +int nxpwifi_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd, + int cmd_action, + struct nxpwifi_ds_11n_amsdu_aggr_ctrl *aa_ctrl) +{ + struct host_cmd_ds_amsdu_aggr_ctrl *amsdu_ctrl = + &cmd->params.amsdu_aggr_ctrl; + u16 action = (u16)cmd_action; + + cmd->command = cpu_to_le16(HOST_CMD_AMSDU_AGGR_CTRL); + cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_amsdu_aggr_ctrl) + + S_DS_GEN); + amsdu_ctrl->action = cpu_to_le16(action); + switch (action) { + case HOST_ACT_GEN_SET: + amsdu_ctrl->enable = cpu_to_le16(aa_ctrl->enable); + amsdu_ctrl->curr_buf_size = 0; + break; + case HOST_ACT_GEN_GET: + default: + amsdu_ctrl->curr_buf_size = 0; + break; + } + return 0; +} + +/* This function prepares 11n configuration command. + * + * Preparation includes - + * - Setting command ID, action and proper size + * - Setting HT Tx capability and HT Tx information fields + * - Ensuring correct endian-ness + */ +int nxpwifi_cmd_11n_cfg(struct nxpwifi_private *priv, + struct host_cmd_ds_command *cmd, u16 cmd_action, + struct nxpwifi_ds_11n_tx_cfg *txcfg) +{ + struct host_cmd_ds_11n_cfg *htcfg = &cmd->params.htcfg; + + cmd->command = cpu_to_le16(HOST_CMD_11N_CFG); + cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_11n_cfg) + S_DS_GEN); + htcfg->action = cpu_to_le16(cmd_action); + htcfg->ht_tx_cap = cpu_to_le16(txcfg->tx_htcap); + htcfg->ht_tx_info = cpu_to_le16(txcfg->tx_htinfo); + + if (priv->adapter->is_hw_11ac_capable) + htcfg->misc_config = cpu_to_le16(txcfg->misc_config); + + return 0; +} + +/* This function appends an 11n TLV to a buffer. + * + * Buffer allocation is responsibility of the calling + * function. No size validation is made here. + * + * The function fills up the following sections, if applicable - + * - HT capability IE + * - HT information IE (with channel list) + * - 20/40 BSS Coexistence IE + * - HT Extended Capabilities IE + */ +int +nxpwifi_cmd_append_11n_tlv(struct nxpwifi_private *priv, + struct nxpwifi_bssdescriptor *bss_desc, + u8 **buffer) +{ + struct nxpwifi_ie_types_htcap *ht_cap; + struct nxpwifi_ie_types_chan_list_param_set *chan_list; + struct nxpwifi_ie_types_2040bssco *bss_co_2040; + struct nxpwifi_ie_types_extcap *ext_cap; + int ret_len = 0; + struct ieee80211_supported_band *sband; + struct element *hdr; + u8 radio_type; + + if (!buffer || !*buffer) + return ret_len; + + radio_type = nxpwifi_band_to_radio_type((u8)bss_desc->bss_band); + sband = priv->wdev.wiphy->bands[radio_type]; + + if (bss_desc->bcn_ht_cap) { + ht_cap = (struct nxpwifi_ie_types_htcap *)*buffer; + memset(ht_cap, 0, sizeof(struct nxpwifi_ie_types_htcap)); + ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY); + ht_cap->header.len = + cpu_to_le16(sizeof(struct ieee80211_ht_cap)); + memcpy((u8 *)ht_cap + sizeof(struct nxpwifi_ie_types_header), + (u8 *)bss_desc->bcn_ht_cap, + le16_to_cpu(ht_cap->header.len)); + + nxpwifi_fill_cap_info(priv, radio_type, &ht_cap->ht_cap); + /* Update HT40 capability from current channel information */ + if (bss_desc->bcn_ht_oper) { + u8 ht_param = bss_desc->bcn_ht_oper->ht_param; + u8 radio = + nxpwifi_band_to_radio_type(bss_desc->bss_band); + int freq = + ieee80211_channel_to_frequency(bss_desc->channel, + radio); + struct ieee80211_channel *chan = + ieee80211_get_channel(priv->adapter->wiphy, freq); + + switch (ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { + case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: + if (chan->flags & IEEE80211_CHAN_NO_HT40PLUS) { + ht_cap->ht_cap.cap_info &= + cpu_to_le16 + (~IEEE80211_HT_CAP_SUP_WIDTH_20_40); + ht_cap->ht_cap.cap_info &= + cpu_to_le16(~IEEE80211_HT_CAP_SGI_40); + } + break; + case IEEE80211_HT_PARAM_CHA_SEC_BELOW: + if (chan->flags & IEEE80211_CHAN_NO_HT40MINUS) { + ht_cap->ht_cap.cap_info &= + cpu_to_le16 + (~IEEE80211_HT_CAP_SUP_WIDTH_20_40); + ht_cap->ht_cap.cap_info &= + cpu_to_le16(~IEEE80211_HT_CAP_SGI_40); + } + break; + } + } + + *buffer += sizeof(struct nxpwifi_ie_types_htcap); + ret_len += sizeof(struct nxpwifi_ie_types_htcap); + } + + if (bss_desc->bcn_ht_oper) { + chan_list = + (struct nxpwifi_ie_types_chan_list_param_set *)*buffer; + memset(chan_list, 0, struct_size(chan_list, chan_scan_param, 1)); + chan_list->header.type = cpu_to_le16(TLV_TYPE_CHANLIST); + chan_list->header.len = + cpu_to_le16(sizeof(struct nxpwifi_chan_scan_param_set)); + chan_list->chan_scan_param[0].chan_number = + bss_desc->bcn_ht_oper->primary_chan; + chan_list->chan_scan_param[0].radio_type = + nxpwifi_band_to_radio_type((u8)bss_desc->bss_band); + + if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && + bss_desc->bcn_ht_oper->ht_param & + IEEE80211_HT_PARAM_CHAN_WIDTH_ANY) + SET_SECONDARYCHAN + (chan_list->chan_scan_param[0].radio_type, + (bss_desc->bcn_ht_oper->ht_param & + IEEE80211_HT_PARAM_CHA_SEC_OFFSET)); + + *buffer += struct_size(chan_list, chan_scan_param, 1); + ret_len += struct_size(chan_list, chan_scan_param, 1); + } + + if (bss_desc->bcn_bss_co_2040) { + bss_co_2040 = (struct nxpwifi_ie_types_2040bssco *)*buffer; + memset(bss_co_2040, 0, + sizeof(struct nxpwifi_ie_types_2040bssco)); + bss_co_2040->header.type = cpu_to_le16(WLAN_EID_BSS_COEX_2040); + bss_co_2040->header.len = + cpu_to_le16(sizeof(bss_co_2040->bss_co_2040)); + + memcpy((u8 *)bss_co_2040 + + sizeof(struct nxpwifi_ie_types_header), + bss_desc->bcn_bss_co_2040 + + sizeof(struct element), + le16_to_cpu(bss_co_2040->header.len)); + + *buffer += sizeof(struct nxpwifi_ie_types_2040bssco); + ret_len += sizeof(struct nxpwifi_ie_types_2040bssco); + } + + if (bss_desc->bcn_ext_cap) { + hdr = (void *)bss_desc->bcn_ext_cap; + ext_cap = (struct nxpwifi_ie_types_extcap *)*buffer; + memset(ext_cap, 0, sizeof(struct nxpwifi_ie_types_extcap)); + ext_cap->header.type = cpu_to_le16(WLAN_EID_EXT_CAPABILITY); + ext_cap->header.len = cpu_to_le16(hdr->datalen); + + memcpy((u8 *)ext_cap->ext_capab, + bss_desc->bcn_ext_cap + sizeof(struct element), + le16_to_cpu(ext_cap->header.len)); + + if (hdr->datalen > 3 && + ext_cap->ext_capab[3] & WLAN_EXT_CAPA4_INTERWORKING_ENABLED) + priv->hs2_enabled = true; + else + priv->hs2_enabled = false; + + *buffer += sizeof(struct nxpwifi_ie_types_extcap) + hdr->datalen; + ret_len += sizeof(struct nxpwifi_ie_types_extcap) + hdr->datalen; + } + + return ret_len; +} + +/* This function checks if the given pointer is valid entry of + * Tx BA Stream table. + */ +static int +nxpwifi_is_tx_ba_stream_ptr_valid(struct nxpwifi_private *priv, + struct nxpwifi_tx_ba_stream_tbl *tx_tbl_ptr) +{ + struct nxpwifi_tx_ba_stream_tbl *tx_ba_tsr_tbl; + + list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { + if (tx_ba_tsr_tbl == tx_tbl_ptr) + return true; + } + + return false; +} + +/* This function deletes the given entry in Tx BA Stream table. + * + * The function also performs a validity check on the supplied + * pointer before trying to delete. + */ +void +nxpwifi_11n_delete_tx_ba_stream_tbl_entry(struct nxpwifi_private *priv, + struct nxpwifi_tx_ba_stream_tbl *tbl) +{ + if (!tbl && nxpwifi_is_tx_ba_stream_ptr_valid(priv, tbl)) + return; + + nxpwifi_dbg(priv->adapter, INFO, + "info: tx_ba_tsr_tbl %p\n", tbl); + + list_del(&tbl->list); + + kfree(tbl); +} + +/* This function deletes all the entries in Tx BA Stream table. + */ +void nxpwifi_11n_delete_all_tx_ba_stream_tbl(struct nxpwifi_private *priv) +{ + int i; + struct nxpwifi_tx_ba_stream_tbl *del_tbl_ptr, *tmp_node; + + spin_lock_bh(&priv->tx_ba_stream_tbl_lock); + list_for_each_entry_safe(del_tbl_ptr, tmp_node, + &priv->tx_ba_stream_tbl_ptr, list) + nxpwifi_11n_delete_tx_ba_stream_tbl_entry(priv, del_tbl_ptr); + spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); + + INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); + + for (i = 0; i < MAX_NUM_TID; ++i) + priv->aggr_prio_tbl[i].ampdu_ap = + priv->aggr_prio_tbl[i].ampdu_user; +} + +/* This function returns the pointer to an entry in BA Stream + * table which matches the given RA/TID pair. + */ +struct nxpwifi_tx_ba_stream_tbl * +nxpwifi_get_ba_tbl(struct nxpwifi_private *priv, int tid, u8 *ra) +{ + struct nxpwifi_tx_ba_stream_tbl *tx_ba_tsr_tbl; + + spin_lock_bh(&priv->tx_ba_stream_tbl_lock); + list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { + if (ether_addr_equal_unaligned(tx_ba_tsr_tbl->ra, ra) && + tx_ba_tsr_tbl->tid == tid) { + spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); + return tx_ba_tsr_tbl; + } + } + spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); + return NULL; +} + +/* This function creates an entry in Tx BA stream table for the + * given RA/TID pair. + */ +void nxpwifi_create_ba_tbl(struct nxpwifi_private *priv, u8 *ra, int tid, + enum nxpwifi_ba_status ba_status) +{ + struct nxpwifi_tx_ba_stream_tbl *new_node; + struct nxpwifi_ra_list_tbl *ra_list; + int tid_down; + + if (!nxpwifi_get_ba_tbl(priv, tid, ra)) { + new_node = kzalloc(sizeof(*new_node), GFP_ATOMIC); + if (!new_node) + return; + + tid_down = nxpwifi_wmm_downgrade_tid(priv, tid); + ra_list = nxpwifi_wmm_get_ralist_node(priv, tid_down, ra); + if (ra_list) { + ra_list->ba_status = ba_status; + ra_list->amsdu_in_ampdu = false; + } + INIT_LIST_HEAD(&new_node->list); + + new_node->tid = tid; + new_node->ba_status = ba_status; + memcpy(new_node->ra, ra, ETH_ALEN); + + spin_lock_bh(&priv->tx_ba_stream_tbl_lock); + list_add_tail(&new_node->list, &priv->tx_ba_stream_tbl_ptr); + spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); + } +} + +/* This function sends an add BA request to the given TID/RA pair. + */ +int nxpwifi_send_addba(struct nxpwifi_private *priv, int tid, u8 *peer_mac) +{ + struct host_cmd_ds_11n_addba_req add_ba_req; + u32 tx_win_size = priv->add_ba_param.tx_win_size; + static u8 dialog_tok; + int ret; + u16 block_ack_param_set; + + nxpwifi_dbg(priv->adapter, CMD, "cmd: %s: tid %d\n", __func__, tid); + + memset(&add_ba_req, 0, sizeof(add_ba_req)); + + block_ack_param_set = (u16)((tid << BLOCKACKPARAM_TID_POS) | + tx_win_size << BLOCKACKPARAM_WINSIZE_POS | + IMMEDIATE_BLOCK_ACK); + + /* enable AMSDU inside AMPDU */ + if (priv->add_ba_param.tx_amsdu && + priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED) + block_ack_param_set |= BLOCKACKPARAM_AMSDU_SUPP_MASK; + + add_ba_req.block_ack_param_set = cpu_to_le16(block_ack_param_set); + add_ba_req.block_ack_tmo = cpu_to_le16((u16)priv->add_ba_param.timeout); + + ++dialog_tok; + + if (dialog_tok == 0) + dialog_tok = 1; + + add_ba_req.dialog_token = dialog_tok; + memcpy(&add_ba_req.peer_mac_addr, peer_mac, ETH_ALEN); + + /* We don't wait for the response of this command */ + ret = nxpwifi_send_cmd(priv, HOST_CMD_11N_ADDBA_REQ, + 0, 0, &add_ba_req, false); + + return ret; +} + +/* This function sends a delete BA request to the given TID/RA pair. + */ +int nxpwifi_send_delba(struct nxpwifi_private *priv, int tid, u8 *peer_mac, + int initiator) +{ + struct host_cmd_ds_11n_delba delba; + int ret; + u16 del_ba_param_set; + + memset(&delba, 0, sizeof(delba)); + + del_ba_param_set = tid << DELBA_TID_POS; + + if (initiator) + del_ba_param_set |= IEEE80211_DELBA_PARAM_INITIATOR_MASK; + else + del_ba_param_set &= ~IEEE80211_DELBA_PARAM_INITIATOR_MASK; + + delba.del_ba_param_set = cpu_to_le16(del_ba_param_set); + memcpy(&delba.peer_mac_addr, peer_mac, ETH_ALEN); + + /* We don't wait for the response of this command */ + ret = nxpwifi_send_cmd(priv, HOST_CMD_11N_DELBA, + HOST_ACT_GEN_SET, 0, &delba, false); + + return ret; +} + +/* This function sends delba to specific tid + */ +void nxpwifi_11n_delba(struct nxpwifi_private *priv, int tid) +{ + struct nxpwifi_rx_reorder_tbl *rx_reor_tbl_ptr; + + spin_lock_bh(&priv->rx_reorder_tbl_lock); + list_for_each_entry(rx_reor_tbl_ptr, &priv->rx_reorder_tbl_ptr, list) { + if (rx_reor_tbl_ptr->tid == tid) { + dev_dbg(priv->adapter->dev, + "Send delba to tid=%d, %pM\n", + tid, rx_reor_tbl_ptr->ta); + nxpwifi_send_delba(priv, tid, rx_reor_tbl_ptr->ta, 0); + goto exit; + } + } +exit: + spin_unlock_bh(&priv->rx_reorder_tbl_lock); +} + +/* This function handles the command response of a delete BA request. + */ +void nxpwifi_11n_delete_ba_stream(struct nxpwifi_private *priv, u8 *del_ba) +{ + struct host_cmd_ds_11n_delba *cmd_del_ba = + (struct host_cmd_ds_11n_delba *)del_ba; + u16 del_ba_param_set = le16_to_cpu(cmd_del_ba->del_ba_param_set); + int tid; + + tid = del_ba_param_set >> DELBA_TID_POS; + + nxpwifi_del_ba_tbl(priv, tid, cmd_del_ba->peer_mac_addr, + TYPE_DELBA_RECEIVE, INITIATOR_BIT(del_ba_param_set)); +} + +/* This function retrieves the Rx reordering table. + */ +int nxpwifi_get_rx_reorder_tbl(struct nxpwifi_private *priv, + struct nxpwifi_ds_rx_reorder_tbl *buf) +{ + int i; + struct nxpwifi_ds_rx_reorder_tbl *rx_reo_tbl = buf; + struct nxpwifi_rx_reorder_tbl *rx_reorder_tbl_ptr; + int count = 0; + + spin_lock_bh(&priv->rx_reorder_tbl_lock); + list_for_each_entry(rx_reorder_tbl_ptr, &priv->rx_reorder_tbl_ptr, + list) { + rx_reo_tbl->tid = (u16)rx_reorder_tbl_ptr->tid; + memcpy(rx_reo_tbl->ta, rx_reorder_tbl_ptr->ta, ETH_ALEN); + rx_reo_tbl->start_win = rx_reorder_tbl_ptr->start_win; + rx_reo_tbl->win_size = rx_reorder_tbl_ptr->win_size; + for (i = 0; i < rx_reorder_tbl_ptr->win_size; ++i) { + if (rx_reorder_tbl_ptr->rx_reorder_ptr[i]) + rx_reo_tbl->buffer[i] = true; + else + rx_reo_tbl->buffer[i] = false; + } + rx_reo_tbl++; + count++; + + if (count >= NXPWIFI_MAX_RX_BASTREAM_SUPPORTED) + break; + } + spin_unlock_bh(&priv->rx_reorder_tbl_lock); + + return count; +} + +/* This function retrieves the Tx BA stream table. + */ +int nxpwifi_get_tx_ba_stream_tbl(struct nxpwifi_private *priv, + struct nxpwifi_ds_tx_ba_stream_tbl *buf) +{ + struct nxpwifi_tx_ba_stream_tbl *tx_ba_tsr_tbl; + struct nxpwifi_ds_tx_ba_stream_tbl *rx_reo_tbl = buf; + int count = 0; + + spin_lock_bh(&priv->tx_ba_stream_tbl_lock); + list_for_each_entry(tx_ba_tsr_tbl, &priv->tx_ba_stream_tbl_ptr, list) { + rx_reo_tbl->tid = (u16)tx_ba_tsr_tbl->tid; + nxpwifi_dbg(priv->adapter, DATA, "data: %s tid=%d\n", + __func__, rx_reo_tbl->tid); + memcpy(rx_reo_tbl->ra, tx_ba_tsr_tbl->ra, ETH_ALEN); + rx_reo_tbl->amsdu = tx_ba_tsr_tbl->amsdu; + rx_reo_tbl++; + count++; + if (count >= NXPWIFI_MAX_TX_BASTREAM_SUPPORTED) + break; + } + spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); + + return count; +} + +/* This function retrieves the entry for specific tx BA stream table by RA and + * deletes it. + */ +void nxpwifi_del_tx_ba_stream_tbl_by_ra(struct nxpwifi_private *priv, u8 *ra) +{ + struct nxpwifi_tx_ba_stream_tbl *tbl, *tmp; + + if (!ra) + return; + + spin_lock_bh(&priv->tx_ba_stream_tbl_lock); + list_for_each_entry_safe(tbl, tmp, &priv->tx_ba_stream_tbl_ptr, list) + if (!memcmp(tbl->ra, ra, ETH_ALEN)) + nxpwifi_11n_delete_tx_ba_stream_tbl_entry(priv, tbl); + spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); +} + +/* This function initializes the BlockACK setup information for given + * nxpwifi_private structure. + */ +void nxpwifi_set_ba_params(struct nxpwifi_private *priv) +{ + priv->add_ba_param.timeout = NXPWIFI_DEFAULT_BLOCK_ACK_TIMEOUT; + + if (GET_BSS_ROLE(priv) == NXPWIFI_BSS_ROLE_UAP) { + priv->add_ba_param.tx_win_size = + NXPWIFI_UAP_AMPDU_DEF_TXWINSIZE; + priv->add_ba_param.rx_win_size = + NXPWIFI_UAP_AMPDU_DEF_RXWINSIZE; + } else { + priv->add_ba_param.tx_win_size = + NXPWIFI_STA_AMPDU_DEF_TXWINSIZE; + priv->add_ba_param.rx_win_size = + NXPWIFI_STA_AMPDU_DEF_RXWINSIZE; + } + + priv->add_ba_param.tx_amsdu = true; + priv->add_ba_param.rx_amsdu = true; +} + +u8 nxpwifi_get_sec_chan_offset(int chan) +{ + u8 sec_offset; + + switch (chan) { + case 36: + case 44: + case 52: + case 60: + case 100: + case 108: + case 116: + case 124: + case 132: + case 140: + case 149: + case 157: + sec_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; + break; + case 40: + case 48: + case 56: + case 64: + case 104: + case 112: + case 120: + case 128: + case 136: + case 144: + case 153: + case 161: + sec_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW; + break; + case 165: + default: + sec_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE; + break; + } + + return sec_offset; +} + +/* This function will send DELBA to entries in the priv's + * Tx BA stream table + */ +static void +nxpwifi_send_delba_txbastream_tbl(struct nxpwifi_private *priv, u8 tid) +{ + struct nxpwifi_adapter *adapter = priv->adapter; + struct nxpwifi_tx_ba_stream_tbl *tx_ba_stream_tbl_ptr; + + list_for_each_entry(tx_ba_stream_tbl_ptr, + &priv->tx_ba_stream_tbl_ptr, list) { + if (tx_ba_stream_tbl_ptr->ba_status == BA_SETUP_COMPLETE) { + if (tid == tx_ba_stream_tbl_ptr->tid) { + dev_dbg(adapter->dev, + "Tx:Send delba to tid=%d, %pM\n", tid, + tx_ba_stream_tbl_ptr->ra); + nxpwifi_send_delba(priv, + tx_ba_stream_tbl_ptr->tid, + tx_ba_stream_tbl_ptr->ra, 1); + return; + } + } + } +} + +/* This function updates all the tx_win_size + */ +void nxpwifi_update_ampdu_txwinsize(struct nxpwifi_adapter *adapter) +{ + u8 i, j; + u32 tx_win_size; + struct nxpwifi_private *priv; + + for (i = 0; i < adapter->priv_num; i++) { + priv = adapter->priv[i]; + tx_win_size = priv->add_ba_param.tx_win_size; + + if (priv->bss_type == NXPWIFI_BSS_TYPE_STA) + priv->add_ba_param.tx_win_size = + NXPWIFI_STA_AMPDU_DEF_TXWINSIZE; + + if (priv->bss_type == NXPWIFI_BSS_TYPE_UAP) + priv->add_ba_param.tx_win_size = + NXPWIFI_UAP_AMPDU_DEF_TXWINSIZE; + + if (adapter->coex_win_size) { + if (adapter->coex_tx_win_size) + priv->add_ba_param.tx_win_size = + adapter->coex_tx_win_size; + } + + if (tx_win_size != priv->add_ba_param.tx_win_size) { + if (!priv->media_connected) + continue; + for (j = 0; j < MAX_NUM_TID; j++) + nxpwifi_send_delba_txbastream_tbl(priv, j); + } + } +} diff --git a/drivers/net/wireless/nxp/nxpwifi/11n.h b/drivers/net/wireless/nxp/nxpwifi/11n.h new file mode 100644 index 000000000000..627d8dff38dc --- /dev/null +++ b/drivers/net/wireless/nxp/nxpwifi/11n.h @@ -0,0 +1,161 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * NXP Wireless LAN device driver: 802.11n + * + * Copyright 2011-2024 NXP + */ + +#ifndef _NXPWIFI_11N_H_ +#define _NXPWIFI_11N_H_ + +#include "11n_aggr.h" +#include "11n_rxreorder.h" +#include "wmm.h" + +int nxpwifi_ret_11n_delba(struct nxpwifi_private *priv, + struct host_cmd_ds_command *resp); +int nxpwifi_ret_11n_addba_req(struct nxpwifi_private *priv, + struct host_cmd_ds_command *resp); +int nxpwifi_cmd_11n_cfg(struct nxpwifi_private *priv, + struct host_cmd_ds_command *cmd, u16 cmd_action, + struct nxpwifi_ds_11n_tx_cfg *txcfg); +int nxpwifi_cmd_append_11n_tlv(struct nxpwifi_private *priv, + struct nxpwifi_bssdescriptor *bss_desc, + u8 **buffer); +int nxpwifi_fill_cap_info(struct nxpwifi_private *priv, u8 radio_type, + struct ieee80211_ht_cap *ht_cap); +int nxpwifi_set_get_11n_htcap_cfg(struct nxpwifi_private *priv, + u16 action, int *htcap_cfg); +void nxpwifi_11n_delete_tx_ba_stream_tbl_entry(struct nxpwifi_private *priv, + struct nxpwifi_tx_ba_stream_tbl + *tx_tbl); +void nxpwifi_11n_delete_all_tx_ba_stream_tbl(struct nxpwifi_private *priv); +struct nxpwifi_tx_ba_stream_tbl *nxpwifi_get_ba_tbl(struct nxpwifi_private + *priv, int tid, u8 *ra); +void nxpwifi_create_ba_tbl(struct nxpwifi_private *priv, u8 *ra, int tid, + enum nxpwifi_ba_status ba_status); +int nxpwifi_send_addba(struct nxpwifi_private *priv, int tid, u8 *peer_mac); +int nxpwifi_send_delba(struct nxpwifi_private *priv, int tid, u8 *peer_mac, + int initiator); +void nxpwifi_11n_delete_ba_stream(struct nxpwifi_private *priv, u8 *del_ba); +int nxpwifi_get_rx_reorder_tbl(struct nxpwifi_private *priv, + struct nxpwifi_ds_rx_reorder_tbl *buf); +int nxpwifi_get_tx_ba_stream_tbl(struct nxpwifi_private *priv, + struct nxpwifi_ds_tx_ba_stream_tbl *buf); +int nxpwifi_cmd_recfg_tx_buf(struct nxpwifi_private *priv, + struct host_cmd_ds_command *cmd, + int cmd_action, u16 *buf_size); +int nxpwifi_cmd_amsdu_aggr_ctrl(struct host_cmd_ds_command *cmd, + int cmd_action, + struct nxpwifi_ds_11n_amsdu_aggr_ctrl *aa_ctrl); +void nxpwifi_del_tx_ba_stream_tbl_by_ra(struct nxpwifi_private *priv, u8 *ra); +u8 nxpwifi_get_sec_chan_offset(int chan); + +static inline u8 +nxpwifi_is_station_ampdu_allowed(struct nxpwifi_private *priv, + struct nxpwifi_ra_list_tbl *ptr, int tid) +{ + struct nxpwifi_sta_node *node = nxpwifi_get_sta_entry(priv, ptr->ra); + + if (unlikely(!node)) + return false; + + return (node->ampdu_sta[tid] != BA_STREAM_NOT_ALLOWED) ? true : false; +} + +/* This function checks whether AMPDU is allowed or not for a particular TID. */ +static inline u8 +nxpwifi_is_ampdu_allowed(struct nxpwifi_private *priv, + struct nxpwifi_ra_list_tbl *ptr, int tid) +{ + u8 ret; + + if (is_broadcast_ether_addr(ptr->ra)) + return false; + + if (GET_BSS_ROLE(priv) == NXPWIFI_BSS_ROLE_UAP) + ret = nxpwifi_is_station_ampdu_allowed(priv, ptr, tid); + else + ret = (priv->aggr_prio_tbl[tid].ampdu_ap != + BA_STREAM_NOT_ALLOWED) ? true : false; + + return ret; +} + +/* This function checks whether AMSDU is allowed or not for a particular TID. + */ +static inline u8 +nxpwifi_is_amsdu_allowed(struct nxpwifi_private *priv, int tid) +{ + return (((priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED) && + (priv->is_data_rate_auto || !(priv->bitmap_rates[2] & 0x03))) + ? true : false); +} + +/* This function checks whether a space is available for new BA stream or not. + */ +static inline u8 +nxpwifi_space_avail_for_new_ba_stream(struct nxpwifi_adapter *adapter) +{ + struct nxpwifi_private *priv; + u8 i; + size_t ba_stream_num = 0, ba_stream_max; + + ba_stream_max = NXPWIFI_MAX_TX_BASTREAM_SUPPORTED; + + for (i = 0; i < adapter->priv_num; i++) { + priv = adapter->priv[i]; + ba_stream_num += list_count_nodes(&priv->tx_ba_stream_tbl_ptr); + } + + if (adapter->fw_api_ver == NXPWIFI_FW_V15) { + ba_stream_max = + GETSUPP_TXBASTREAMS(adapter->hw_dot_11n_dev_cap); + if (!ba_stream_max) + ba_stream_max = NXPWIFI_MAX_TX_BASTREAM_SUPPORTED; + } + + return ((ba_stream_num < ba_stream_max) ? true : false); +} + +/* This function finds the correct Tx BA stream to delete. + * + * Upon successfully locating, both the TID and the RA are returned. + */ +static inline u8 +nxpwifi_find_stream_to_delete(struct nxpwifi_private *priv, int ptr_tid, + int *ptid, u8 *ra) +{ + int tid; + u8 ret = false; + struct nxpwifi_tx_ba_stream_tbl *tx_tbl; + + tid = priv->aggr_prio_tbl[ptr_tid].ampdu_user; + + spin_lock_bh(&priv->tx_ba_stream_tbl_lock); + list_for_each_entry(tx_tbl, &priv->tx_ba_stream_tbl_ptr, list) { + if (tid > priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user) { + tid = priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user; + *ptid = tx_tbl->tid; + memcpy(ra, tx_tbl->ra, ETH_ALEN); + ret = true; + } + } + spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); + + return ret; +} + +/* This function checks whether associated station is 11n enabled + */ +static inline int nxpwifi_is_sta_11n_enabled(struct nxpwifi_private *priv, + struct nxpwifi_sta_node *node) +{ + if (!node || (priv->bss_role == NXPWIFI_BSS_ROLE_UAP && + !priv->ap_11n_enabled)) + return 0; + + return node->is_11n_enabled; +} + +#endif /* !_NXPWIFI_11N_H_ */ diff --git a/drivers/net/wireless/nxp/nxpwifi/11n_aggr.c b/drivers/net/wireless/nxp/nxpwifi/11n_aggr.c new file mode 100644 index 000000000000..06698c0af56b --- /dev/null +++ b/drivers/net/wireless/nxp/nxpwifi/11n_aggr.c @@ -0,0 +1,275 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * NXP Wireless LAN device driver: 802.11n Aggregation + * + * Copyright 2011-2024 NXP + */ + +#include "cfg.h" +#include "util.h" +#include "fw.h" +#include "main.h" +#include "wmm.h" +#include "11n.h" +#include "11n_aggr.h" + +/* Creates an AMSDU subframe for aggregation into one AMSDU packet. + * + * The resultant AMSDU subframe format is - + * + * +---- ~ -----+---- ~ ------+---- ~ -----+----- ~ -----+---- ~ -----+ + * | DA | SA | Length | SNAP header | MSDU | + * | data[0..5] | data[6..11] | | | data[14..] | + * +---- ~ -----+---- ~ ------+---- ~ -----+----- ~ -----+---- ~ -----+ + * <--6-bytes--> <--6-bytes--> <--2-bytes--><--8-bytes--> <--n-bytes--> + * + * This function also computes the amount of padding required to make the + * buffer length multiple of 4 bytes. + * + * Data => |DA|SA|SNAP-TYPE|........ .| + * MSDU => |DA|SA|Length|SNAP|...... ..| + */ +static int +nxpwifi_11n_form_amsdu_pkt(struct sk_buff *skb_aggr, + struct sk_buff *skb_src, int *pad) + +{ + int dt_offset; + struct rfc_1042_hdr snap = { + 0xaa, /* LLC DSAP */ + 0xaa, /* LLC SSAP */ + 0x03, /* LLC CTRL */ + {0x00, 0x00, 0x00}, /* SNAP OUI */ + 0x0000 /* SNAP type */ + /* This field will be overwritten + * later with ethertype + */ + }; + struct tx_packet_hdr *tx_header; + + tx_header = skb_put(skb_aggr, sizeof(*tx_header)); + + /* Copy DA and SA */ + dt_offset = 2 * ETH_ALEN; + memcpy(&tx_header->eth803_hdr, skb_src->data, dt_offset); + + /* Copy SNAP header */ + snap.snap_type = ((struct ethhdr *)skb_src->data)->h_proto; + + dt_offset += sizeof(__be16); + + memcpy(&tx_header->rfc1042_hdr, &snap, sizeof(struct rfc_1042_hdr)); + + skb_pull(skb_src, dt_offset); + + /* Update Length field */ + tx_header->eth803_hdr.h_proto = htons(skb_src->len + LLC_SNAP_LEN); + + /* Add payload */ + skb_put_data(skb_aggr, skb_src->data, skb_src->len); + + /* Add padding for new MSDU to start from 4 byte boundary */ + *pad = (4 - ((unsigned long)skb_aggr->tail & 0x3)) % 4; + + return skb_aggr->len + *pad; +} + +/* Adds TxPD to AMSDU header. + * + * Each AMSDU packet will contain one TxPD at the beginning, + * followed by multiple AMSDU subframes. + */ +static void +nxpwifi_11n_form_amsdu_txpd(struct nxpwifi_private *priv, + struct sk_buff *skb) +{ + struct txpd *local_tx_pd; + + skb_push(skb, sizeof(*local_tx_pd)); + + local_tx_pd = (struct txpd *)skb->data; + memset(local_tx_pd, 0, sizeof(struct txpd)); + + /* Original priority has been overwritten */ + local_tx_pd->priority = (u8)skb->priority; + local_tx_pd->pkt_delay_2ms = + nxpwifi_wmm_compute_drv_pkt_delay(priv, skb); + local_tx_pd->bss_num = priv->bss_num; + local_tx_pd->bss_type = priv->bss_type; + /* Always zero as the data is followed by struct txpd */ + local_tx_pd->tx_pkt_offset = cpu_to_le16(sizeof(struct txpd)); + local_tx_pd->tx_pkt_type = cpu_to_le16(PKT_TYPE_AMSDU); + local_tx_pd->tx_pkt_length = cpu_to_le16(skb->len - + sizeof(*local_tx_pd)); + + if (local_tx_pd->tx_control == 0) + /* TxCtrl set by user or default */ + local_tx_pd->tx_control = cpu_to_le32(priv->pkt_tx_ctrl); + + if (GET_BSS_ROLE(priv) == NXPWIFI_BSS_ROLE_STA && + priv->adapter->pps_uapsd_mode) { + if (nxpwifi_check_last_packet_indication(priv)) { + priv->adapter->tx_lock_flag = true; + local_tx_pd->flags = + NXPWIFI_TxPD_POWER_MGMT_LAST_PACKET; + } + } +} + +/* Create aggregated packet. + * + * This function creates an aggregated MSDU packet, by combining buffers + * from the RA list. Each individual buffer is encapsulated as an AMSDU + * subframe and all such subframes are concatenated together to form the + * AMSDU packet. + * + * A TxPD is also added to the front of the resultant AMSDU packets for + * transmission. The resultant packets format is - + * + * +---- ~ ----+------ ~ ------+------ ~ ------+-..-+------ ~ ------+ + * | TxPD |AMSDU sub-frame|AMSDU sub-frame| .. |AMSDU sub-frame| + * | | 1 | 2 | .. | n | + * +---- ~ ----+------ ~ ------+------ ~ ------+ .. +------ ~ ------+ + */ +int +nxpwifi_11n_aggregate_pkt(struct nxpwifi_private *priv, + struct nxpwifi_ra_list_tbl *pra_list, + int ptrindex) + __releases(&priv->wmm.ra_list_spinlock) +{ + struct nxpwifi_adapter *adapter = priv->adapter; + struct sk_buff *skb_aggr, *skb_src; + struct nxpwifi_txinfo *tx_info_aggr, *tx_info_src; + int pad = 0, aggr_num = 0, ret; + struct nxpwifi_tx_param tx_param; + struct txpd *ptx_pd = NULL; + int headroom = adapter->intf_hdr_len; + + skb_src = skb_peek(&pra_list->skb_head); + if (!skb_src) { + spin_unlock_bh(&priv->wmm.ra_list_spinlock); + return 0; + } + + tx_info_src = NXPWIFI_SKB_TXCB(skb_src); + skb_aggr = nxpwifi_alloc_dma_align_buf(adapter->tx_buf_size, + GFP_ATOMIC); + if (!skb_aggr) { + spin_unlock_bh(&priv->wmm.ra_list_spinlock); + return -ENOMEM; + } + + /* skb_aggr->data already 64 byte align, just reserve bus interface + * header and txpd. + */ + skb_reserve(skb_aggr, headroom + sizeof(struct txpd)); + tx_info_aggr = NXPWIFI_SKB_TXCB(skb_aggr); + + memset(tx_info_aggr, 0, sizeof(*tx_info_aggr)); + tx_info_aggr->bss_type = tx_info_src->bss_type; + tx_info_aggr->bss_num = tx_info_src->bss_num; + + tx_info_aggr->flags |= NXPWIFI_BUF_FLAG_AGGR_PKT; + skb_aggr->priority = skb_src->priority; + skb_aggr->tstamp = skb_src->tstamp; + + do { + /* Check if AMSDU can accommodate this MSDU */ + if ((skb_aggr->len + skb_src->len + LLC_SNAP_LEN) > + adapter->tx_buf_size) + break; + + skb_src = skb_dequeue(&pra_list->skb_head); + pra_list->total_pkt_count--; + atomic_dec(&priv->wmm.tx_pkts_queued); + aggr_num++; + spin_unlock_bh(&priv->wmm.ra_list_spinlock); + nxpwifi_11n_form_amsdu_pkt(skb_aggr, skb_src, &pad); + + nxpwifi_write_data_complete(adapter, skb_src, 0, 0); + + spin_lock_bh(&priv->wmm.ra_list_spinlock); + + if (!nxpwifi_is_ralist_valid(priv, pra_list, ptrindex)) { + spin_unlock_bh(&priv->wmm.ra_list_spinlock); + return -ENOENT; + } + + if (skb_tailroom(skb_aggr) < pad) { + pad = 0; + break; + } + skb_put(skb_aggr, pad); + + skb_src = skb_peek(&pra_list->skb_head); + + } while (skb_src); + + spin_unlock_bh(&priv->wmm.ra_list_spinlock); + + /* Last AMSDU packet does not need padding */ + skb_trim(skb_aggr, skb_aggr->len - pad); + + /* Form AMSDU */ + nxpwifi_11n_form_amsdu_txpd(priv, skb_aggr); + if (GET_BSS_ROLE(priv) == NXPWIFI_BSS_ROLE_STA) + ptx_pd = (struct txpd *)skb_aggr->data; + + skb_push(skb_aggr, headroom); + tx_info_aggr->aggr_num = aggr_num * 2; + if (adapter->data_sent || adapter->tx_lock_flag) { + atomic_add(aggr_num * 2, &adapter->tx_queued); + skb_queue_tail(&adapter->tx_data_q, skb_aggr); + return 0; + } + + if (skb_src) + tx_param.next_pkt_len = skb_src->len + sizeof(struct txpd); + else + tx_param.next_pkt_len = 0; + + ret = adapter->if_ops.host_to_card(adapter, NXPWIFI_TYPE_DATA, + skb_aggr, &tx_param); + + switch (ret) { + case -EBUSY: + spin_lock_bh(&priv->wmm.ra_list_spinlock); + if (!nxpwifi_is_ralist_valid(priv, pra_list, ptrindex)) { + spin_unlock_bh(&priv->wmm.ra_list_spinlock); + nxpwifi_write_data_complete(adapter, skb_aggr, 1, -1); + return -EINVAL; + } + if (GET_BSS_ROLE(priv) == NXPWIFI_BSS_ROLE_STA && + adapter->pps_uapsd_mode && adapter->tx_lock_flag) { + priv->adapter->tx_lock_flag = false; + if (ptx_pd) + ptx_pd->flags = 0; + } + + skb_queue_tail(&pra_list->skb_head, skb_aggr); + + pra_list->total_pkt_count++; + + atomic_inc(&priv->wmm.tx_pkts_queued); + + tx_info_aggr->flags |= NXPWIFI_BUF_FLAG_REQUEUED_PKT; + spin_unlock_bh(&priv->wmm.ra_list_spinlock); + nxpwifi_dbg(adapter, ERROR, "data: -EBUSY is returned\n"); + break; + case -EINPROGRESS: + break; + case 0: + nxpwifi_write_data_complete(adapter, skb_aggr, 1, ret); + break; + default: + nxpwifi_dbg(adapter, ERROR, "%s: host_to_card failed: %#x\n", + __func__, ret); + adapter->dbg.num_tx_host_to_card_failure++; + nxpwifi_write_data_complete(adapter, skb_aggr, 1, ret); + break; + } + if (ret != -EBUSY) + nxpwifi_rotate_priolists(priv, pra_list, ptrindex); + + return 0; +} diff --git a/drivers/net/wireless/nxp/nxpwifi/11n_aggr.h b/drivers/net/wireless/nxp/nxpwifi/11n_aggr.h new file mode 100644 index 000000000000..be9f0f8f4e48 --- /dev/null +++ b/drivers/net/wireless/nxp/nxpwifi/11n_aggr.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * NXP Wireless LAN device driver: 802.11n Aggregation + * + * Copyright 2011-2024 NXP + */ + +#ifndef _NXPWIFI_11N_AGGR_H_ +#define _NXPWIFI_11N_AGGR_H_ + +#define PKT_TYPE_AMSDU 0xE6 +#define MIN_NUM_AMSDU 2 + +int nxpwifi_11n_deaggregate_pkt(struct nxpwifi_private *priv, + struct sk_buff *skb); +int nxpwifi_11n_aggregate_pkt(struct nxpwifi_private *priv, + struct nxpwifi_ra_list_tbl *ptr, + int ptr_index) + __releases(&priv->wmm.ra_list_spinlock); + +#endif /* !_NXPWIFI_11N_AGGR_H_ */ diff --git a/drivers/net/wireless/nxp/nxpwifi/11n_rxreorder.c b/drivers/net/wireless/nxp/nxpwifi/11n_rxreorder.c new file mode 100644 index 000000000000..cb037d577528 --- /dev/null +++ b/drivers/net/wireless/nxp/nxpwifi/11n_rxreorder.c @@ -0,0 +1,910 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * NXP Wireless LAN device driver: 802.11n RX Re-ordering + * + * Copyright 2011-2024 NXP + */ + +#include "cfg.h" +#include "util.h" +#include "fw.h" +#include "main.h" +#include "cmdevt.h" +#include "wmm.h" +#include "11n.h" +#include "11n_rxreorder.h" + +/* This function will dispatch amsdu packet and forward it to kernel/upper + * layer. + */ +static int nxpwifi_11n_dispatch_amsdu_pkt(struct nxpwifi_private *priv, + struct sk_buff *skb) +{ + struct rxpd *local_rx_pd = (struct rxpd *)(skb->data); + int ret; + + if (le16_to_cpu(local_rx_pd->rx_pkt_type) == PKT_TYPE_AMSDU) { + struct sk_buff_head list; + struct sk_buff *rx_skb; + + __skb_queue_head_init(&list); + + skb_pull(skb, le16_to_cpu(local_rx_pd->rx_pkt_offset)); + skb_trim(skb, le16_to_cpu(local_rx_pd->rx_pkt_length)); + + ieee80211_amsdu_to_8023s(skb, &list, priv->curr_addr, + priv->wdev.iftype, 0, NULL, NULL, false); + + while (!skb_queue_empty(&list)) { + rx_skb = __skb_dequeue(&list); + + if (priv->bss_role == NXPWIFI_BSS_ROLE_UAP) + ret = nxpwifi_uap_recv_packet(priv, rx_skb); + else + ret = nxpwifi_recv_packet(priv, rx_skb); + if (ret) + nxpwifi_dbg(priv->adapter, ERROR, + "Rx of A-MSDU failed"); + } + return 0; + } + + return -EINVAL; +} + +/* This function will process the rx packet and forward it to kernel/upper + * layer. + */ +static int nxpwifi_11n_dispatch_pkt(struct nxpwifi_private *priv, + struct sk_buff *payload) +{ + int ret; + + if (!payload) { + nxpwifi_dbg(priv->adapter, INFO, "info: fw drop data\n"); + return 0; + } + + ret = nxpwifi_11n_dispatch_amsdu_pkt(priv, payload); + if (!ret) + return 0; + + if (priv->bss_role == NXPWIFI_BSS_ROLE_UAP) + return nxpwifi_handle_uap_rx_forward(priv, payload); + + return nxpwifi_process_rx_packet(priv, payload); +} + +/* This function dispatches all packets in the Rx reorder table until the + * start window. + * + * There could be holes in the buffer, which are skipped by the function. + * Since the buffer is linear, the function uses rotation to simulate + * circular buffer. + */ +static void +nxpwifi_11n_dispatch_pkt_until_start_win(struct nxpwifi_private *priv, + struct nxpwifi_rx_reorder_tbl *tbl, + int start_win) +{ + struct sk_buff_head list; + struct sk_buff *skb; + int pkt_to_send, i; + + __skb_queue_head_init(&list); + spin_lock_bh(&priv->rx_reorder_tbl_lock); + + pkt_to_send = (start_win > tbl->start_win) ? + min((start_win - tbl->start_win), tbl->win_size) : + tbl->win_size; + + for (i = 0; i < pkt_to_send; ++i) { + if (tbl->rx_reorder_ptr[i]) { + skb = tbl->rx_reorder_ptr[i]; + __skb_queue_tail(&list, skb); + tbl->rx_reorder_ptr[i] = NULL; + } + } + + /* We don't have a circular buffer, hence use rotation to simulate + * circular buffer + */ + for (i = 0; i < tbl->win_size - pkt_to_send; ++i) { + tbl->rx_reorder_ptr[i] = tbl->rx_reorder_ptr[pkt_to_send + i]; + tbl->rx_reorder_ptr[pkt_to_send + i] = NULL; + } + + tbl->start_win = start_win; + spin_unlock_bh(&priv->rx_reorder_tbl_lock); + + while ((skb = __skb_dequeue(&list))) + nxpwifi_11n_dispatch_pkt(priv, skb); +} + +/* This function dispatches all packets in the Rx reorder table until + * a hole is found. + * + * The start window is adjusted automatically when a hole is located. + * Since the buffer is linear, the function uses rotation to simulate + * circular buffer. + */ +static void +nxpwifi_11n_scan_and_dispatch(struct nxpwifi_private *priv, + struct nxpwifi_rx_reorder_tbl *tbl) +{ + struct sk_buff_head list; + struct sk_buff *skb; + int i, j, xchg; + + __skb_queue_head_init(&list); + spin_lock_bh(&priv->rx_reorder_tbl_lock); + + for (i = 0; i < tbl->win_size; ++i) { + if (!tbl->rx_reorder_ptr[i]) + break; + skb = tbl->rx_reorder_ptr[i]; + __skb_queue_tail(&list, skb); + tbl->rx_reorder_ptr[i] = NULL; + } + + /* We don't have a circular buffer, hence use rotation to simulate + * circular buffer + */ + if (i > 0) { + xchg = tbl->win_size - i; + for (j = 0; j < xchg; ++j) { + tbl->rx_reorder_ptr[j] = tbl->rx_reorder_ptr[i + j]; + tbl->rx_reorder_ptr[i + j] = NULL; + } + } + tbl->start_win = (tbl->start_win + i) & (MAX_TID_VALUE - 1); + + spin_unlock_bh(&priv->rx_reorder_tbl_lock); + + while ((skb = __skb_dequeue(&list))) + nxpwifi_11n_dispatch_pkt(priv, skb); +} + +/* This function deletes the Rx reorder table and frees the memory. + * + * The function stops the associated timer and dispatches all the + * pending packets in the Rx reorder table before deletion. + */ +static void +nxpwifi_del_rx_reorder_entry(struct nxpwifi_private *priv, + struct nxpwifi_rx_reorder_tbl *tbl) +{ + struct nxpwifi_adapter *adapter = priv->adapter; + int start_win; + + if (!tbl) + return; + + tasklet_disable(&adapter->rx_task); + + start_win = (tbl->start_win + tbl->win_size) & (MAX_TID_VALUE - 1); + nxpwifi_11n_dispatch_pkt_until_start_win(priv, tbl, start_win); + + del_timer_sync(&tbl->timer_context.timer); + tbl->timer_context.timer_is_set = false; + + spin_lock_bh(&priv->rx_reorder_tbl_lock); + list_del(&tbl->list); + spin_unlock_bh(&priv->rx_reorder_tbl_lock); + + kfree(tbl->rx_reorder_ptr); + kfree(tbl); + + tasklet_enable(&adapter->rx_task); +} + +/* This function returns the pointer to an entry in Rx reordering + * table which matches the given TA/TID pair. + */ +struct nxpwifi_rx_reorder_tbl * +nxpwifi_11n_get_rx_reorder_tbl(struct nxpwifi_private *priv, int tid, u8 *ta) +{ + struct nxpwifi_rx_reorder_tbl *tbl; + + spin_lock_bh(&priv->rx_reorder_tbl_lock); + list_for_each_entry(tbl, &priv->rx_reorder_tbl_ptr, list) { + if (!memcmp(tbl->ta, ta, ETH_ALEN) && tbl->tid == tid) { + spin_unlock_bh(&priv->rx_reorder_tbl_lock); + return tbl; + } + } + spin_unlock_bh(&priv->rx_reorder_tbl_lock); + + return NULL; +} + +/* This function retrieves the pointer to an entry in Rx reordering + * table which matches the given TA and deletes it. + */ +void nxpwifi_11n_del_rx_reorder_tbl_by_ta(struct nxpwifi_private *priv, u8 *ta) +{ + struct nxpwifi_rx_reorder_tbl *tbl, *tmp; + + if (!ta) + return; + + spin_lock_bh(&priv->rx_reorder_tbl_lock); + list_for_each_entry_safe(tbl, tmp, &priv->rx_reorder_tbl_ptr, list) { + if (!memcmp(tbl->ta, ta, ETH_ALEN)) { + spin_unlock_bh(&priv->rx_reorder_tbl_lock); + nxpwifi_del_rx_reorder_entry(priv, tbl); + spin_lock_bh(&priv->rx_reorder_tbl_lock); + } + } + spin_unlock_bh(&priv->rx_reorder_tbl_lock); +} + +/* This function finds the last sequence number used in the packets + * buffered in Rx reordering table. + */ +static int +nxpwifi_11n_find_last_seq_num(struct reorder_tmr_cnxt *ctx) +{ + struct nxpwifi_rx_reorder_tbl *rx_reorder_tbl_ptr = ctx->ptr; + struct nxpwifi_private *priv = ctx->priv; + int i; + + spin_lock_bh(&priv->rx_reorder_tbl_lock); + for (i = rx_reorder_tbl_ptr->win_size - 1; i >= 0; --i) { + if (rx_reorder_tbl_ptr->rx_reorder_ptr[i]) { + spin_unlock_bh(&priv->rx_reorder_tbl_lock); + return i; + } + } + spin_unlock_bh(&priv->rx_reorder_tbl_lock); + + return -EINVAL; +} + +/* This function flushes all the packets in Rx reordering table. + * + * The function checks if any packets are currently buffered in the + * table or not. In case there are packets available, it dispatches + * them and then dumps the Rx reordering table. + */ +static void +nxpwifi_flush_data(struct timer_list *t) +{ + struct reorder_tmr_cnxt *ctx = + from_timer(ctx, t, timer); + int start_win, seq_num; + + ctx->timer_is_set = false; + seq_num = nxpwifi_11n_find_last_seq_num(ctx); + + if (seq_num < 0) + return; + + nxpwifi_dbg(ctx->priv->adapter, INFO, "info: flush data %d\n", seq_num); + start_win = (ctx->ptr->start_win + seq_num + 1) & (MAX_TID_VALUE - 1); + nxpwifi_11n_dispatch_pkt_until_start_win(ctx->priv, ctx->ptr, + start_win); +} + +/* This function creates an entry in Rx reordering table for the + * given TA/TID. + * + * The function also initializes the entry with sequence number, window + * size as well as initializes the timer. + * + * If the received TA/TID pair is already present, all the packets are + * dispatched and the window size is moved until the SSN. + */ +static void +nxpwifi_11n_create_rx_reorder_tbl(struct nxpwifi_private *priv, u8 *ta, + int tid, int win_size, int seq_num) +{ + int i; + struct nxpwifi_rx_reorder_tbl *tbl, *new_node; + u16 last_seq = 0; + struct nxpwifi_sta_node *node; + + /* If we get a TID, ta pair which is already present dispatch all + * the packets and move the window size until the ssn + */ + tbl = nxpwifi_11n_get_rx_reorder_tbl(priv, tid, ta); + if (tbl) { + nxpwifi_11n_dispatch_pkt_until_start_win(priv, tbl, seq_num); + return; + } + /* if !tbl then create one */ + new_node = kzalloc(sizeof(*new_node), GFP_KERNEL); + if (!new_node) + return; + + INIT_LIST_HEAD(&new_node->list); + new_node->tid = tid; + memcpy(new_node->ta, ta, ETH_ALEN); + new_node->start_win = seq_num; + new_node->init_win = seq_num; + new_node->flags = 0; + + spin_lock_bh(&priv->sta_list_spinlock); + if (nxpwifi_queuing_ra_based(priv)) { + if (priv->bss_role == NXPWIFI_BSS_ROLE_UAP) { + node = nxpwifi_get_sta_entry(priv, ta); + if (node) + last_seq = node->rx_seq[tid]; + } + } else { + node = nxpwifi_get_sta_entry(priv, ta); + if (node) + last_seq = node->rx_seq[tid]; + else + last_seq = priv->rx_seq[tid]; + } + spin_unlock_bh(&priv->sta_list_spinlock); + + nxpwifi_dbg(priv->adapter, INFO, + "info: last_seq=%d start_win=%d\n", + last_seq, new_node->start_win); + + if (last_seq != NXPWIFI_DEF_11N_RX_SEQ_NUM && + last_seq >= new_node->start_win) { + new_node->start_win = last_seq + 1; + new_node->flags |= RXREOR_INIT_WINDOW_SHIFT; + } + + new_node->win_size = win_size; + + new_node->rx_reorder_ptr = kcalloc(win_size, sizeof(void *), + GFP_KERNEL); + if (!new_node->rx_reorder_ptr) { + kfree(new_node); + nxpwifi_dbg(priv->adapter, ERROR, + "%s: failed to alloc reorder_ptr\n", __func__); + return; + } + + new_node->timer_context.ptr = new_node; + new_node->timer_context.priv = priv; + new_node->timer_context.timer_is_set = false; + + timer_setup(&new_node->timer_context.timer, nxpwifi_flush_data, 0); + + for (i = 0; i < win_size; ++i) + new_node->rx_reorder_ptr[i] = NULL; + + spin_lock_bh(&priv->rx_reorder_tbl_lock); + list_add_tail(&new_node->list, &priv->rx_reorder_tbl_ptr); + spin_unlock_bh(&priv->rx_reorder_tbl_lock); +} + +static void +nxpwifi_11n_rxreorder_timer_restart(struct nxpwifi_rx_reorder_tbl *tbl) +{ + u32 min_flush_time; + + if (tbl->win_size >= NXPWIFI_BA_WIN_SIZE_32) + min_flush_time = MIN_FLUSH_TIMER_15_MS; + else + min_flush_time = MIN_FLUSH_TIMER_MS; + + mod_timer(&tbl->timer_context.timer, + jiffies + msecs_to_jiffies(min_flush_time * tbl->win_size)); + + tbl->timer_context.timer_is_set = true; +} + +/* This function prepares command for adding a BA request. + * + * Preparation includes - + * - Setting command ID and proper size + * - Setting add BA request buffer + * - Ensuring correct endian-ness + */ +int nxpwifi_cmd_11n_addba_req(struct host_cmd_ds_command *cmd, void *data_buf) +{ + struct host_cmd_ds_11n_addba_req *add_ba_req = &cmd->params.add_ba_req; + + cmd->command = cpu_to_le16(HOST_CMD_11N_ADDBA_REQ); + cmd->size = cpu_to_le16(sizeof(*add_ba_req) + S_DS_GEN); + memcpy(add_ba_req, data_buf, sizeof(*add_ba_req)); + + return 0; +} + +/* This function prepares command for adding a BA response. + * + * Preparation includes - + * - Setting command ID and proper size + * - Setting add BA response buffer + * - Ensuring correct endian-ness + */ +int nxpwifi_cmd_11n_addba_rsp_gen(struct nxpwifi_private *priv, + struct host_cmd_ds_command *cmd, + struct host_cmd_ds_11n_addba_req + *cmd_addba_req) +{ + struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &cmd->params.add_ba_rsp; + u32 rx_win_size = priv->add_ba_param.rx_win_size; + u8 tid; + int win_size; + u16 block_ack_param_set; + + cmd->command = cpu_to_le16(HOST_CMD_11N_ADDBA_RSP); + cmd->size = cpu_to_le16(sizeof(*add_ba_rsp) + S_DS_GEN); + + memcpy(add_ba_rsp->peer_mac_addr, cmd_addba_req->peer_mac_addr, + ETH_ALEN); + add_ba_rsp->dialog_token = cmd_addba_req->dialog_token; + add_ba_rsp->block_ack_tmo = cmd_addba_req->block_ack_tmo; + add_ba_rsp->ssn = cmd_addba_req->ssn; + + block_ack_param_set = le16_to_cpu(cmd_addba_req->block_ack_param_set); + tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK) + >> BLOCKACKPARAM_TID_POS; + add_ba_rsp->status_code = cpu_to_le16(ADDBA_RSP_STATUS_ACCEPT); + block_ack_param_set &= ~IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK; + + /* If we don't support AMSDU inside AMPDU, reset the bit */ + if (!priv->add_ba_param.rx_amsdu || + priv->aggr_prio_tbl[tid].amsdu == BA_STREAM_NOT_ALLOWED) + block_ack_param_set &= ~BLOCKACKPARAM_AMSDU_SUPP_MASK; + block_ack_param_set |= rx_win_size << BLOCKACKPARAM_WINSIZE_POS; + add_ba_rsp->block_ack_param_set = cpu_to_le16(block_ack_param_set); + win_size = (le16_to_cpu(add_ba_rsp->block_ack_param_set) + & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) + >> BLOCKACKPARAM_WINSIZE_POS; + cmd_addba_req->block_ack_param_set = cpu_to_le16(block_ack_param_set); + + nxpwifi_11n_create_rx_reorder_tbl(priv, cmd_addba_req->peer_mac_addr, + tid, win_size, + le16_to_cpu(cmd_addba_req->ssn)); + return 0; +} + +/* This function prepares command for deleting a BA request. + * + * Preparation includes - + * - Setting command ID and proper size + * - Setting del BA request buffer + * - Ensuring correct endian-ness + */ +int nxpwifi_cmd_11n_delba(struct host_cmd_ds_command *cmd, void *data_buf) +{ + struct host_cmd_ds_11n_delba *del_ba = &cmd->params.del_ba; + + cmd->command = cpu_to_le16(HOST_CMD_11N_DELBA); + cmd->size = cpu_to_le16(sizeof(*del_ba) + S_DS_GEN); + memcpy(del_ba, data_buf, sizeof(*del_ba)); + + return 0; +} + +/* This function identifies if Rx reordering is needed for a received packet. + * + * In case reordering is required, the function will do the reordering + * before sending it to kernel. + * + * The Rx reorder table is checked first with the received TID/TA pair. If + * not found, the received packet is dispatched immediately. But if found, + * the packet is reordered and all the packets in the updated Rx reordering + * table is dispatched until a hole is found. + * + * For sequence number less than the starting window, the packet is dropped. + */ +int nxpwifi_11n_rx_reorder_pkt(struct nxpwifi_private *priv, + u16 seq_num, u16 tid, + u8 *ta, u8 pkt_type, void *payload) +{ + struct nxpwifi_rx_reorder_tbl *tbl; + int prev_start_win, start_win, end_win, win_size; + u16 pkt_index; + bool init_window_shift = false; + int ret = 0; + + tbl = nxpwifi_11n_get_rx_reorder_tbl(priv, tid, ta); + if (!tbl) { + if (pkt_type != PKT_TYPE_BAR) + nxpwifi_11n_dispatch_pkt(priv, payload); + return ret; + } + + if (pkt_type == PKT_TYPE_AMSDU && !tbl->amsdu) { + nxpwifi_11n_dispatch_pkt(priv, payload); + return ret; + } + + start_win = tbl->start_win; + prev_start_win = start_win; + win_size = tbl->win_size; + end_win = ((start_win + win_size) - 1) & (MAX_TID_VALUE - 1); + if (tbl->flags & RXREOR_INIT_WINDOW_SHIFT) { + init_window_shift = true; + tbl->flags &= ~RXREOR_INIT_WINDOW_SHIFT; + } + + if (tbl->flags & RXREOR_FORCE_NO_DROP) { + nxpwifi_dbg(priv->adapter, INFO, + "RXREOR_FORCE_NO_DROP when HS is activated\n"); + tbl->flags &= ~RXREOR_FORCE_NO_DROP; + } else if (init_window_shift && seq_num < start_win && + seq_num >= tbl->init_win) { + nxpwifi_dbg(priv->adapter, INFO, + "Sender TID sequence number reset %d->%d for SSN %d\n", + start_win, seq_num, tbl->init_win); + start_win = seq_num; + tbl->start_win = start_win; + end_win = ((start_win + win_size) - 1) & (MAX_TID_VALUE - 1); + } else { + /* If seq_num is less then starting win then ignore and drop + * the packet + */ + if ((start_win + TWOPOW11) > (MAX_TID_VALUE - 1)) { + if (seq_num >= ((start_win + TWOPOW11) & + (MAX_TID_VALUE - 1)) && + seq_num < start_win) { + ret = -EINVAL; + goto done; + } + } else if ((seq_num < start_win) || + (seq_num >= (start_win + TWOPOW11))) { + ret = -EINVAL; + goto done; + } + } + + /* If this packet is a BAR we adjust seq_num as + * WinStart = seq_num + */ + if (pkt_type == PKT_TYPE_BAR) + seq_num = ((seq_num + win_size) - 1) & (MAX_TID_VALUE - 1); + + if ((end_win < start_win && + seq_num < start_win && seq_num > end_win) || + (end_win > start_win && (seq_num > end_win || + seq_num < start_win))) { + end_win = seq_num; + if (((end_win - win_size) + 1) >= 0) + start_win = (end_win - win_size) + 1; + else + start_win = (MAX_TID_VALUE - (win_size - end_win)) + 1; + nxpwifi_11n_dispatch_pkt_until_start_win(priv, tbl, start_win); + } + + if (pkt_type != PKT_TYPE_BAR) { + if (seq_num >= start_win) + pkt_index = seq_num - start_win; + else + pkt_index = (seq_num + MAX_TID_VALUE) - start_win; + + if (tbl->rx_reorder_ptr[pkt_index]) { + ret = -EINVAL; + goto done; + } + + tbl->rx_reorder_ptr[pkt_index] = payload; + } + + /* Dispatch all packets sequentially from start_win until a + * hole is found and adjust the start_win appropriately + */ + nxpwifi_11n_scan_and_dispatch(priv, tbl); + +done: + if (!tbl->timer_context.timer_is_set || + prev_start_win != tbl->start_win) + nxpwifi_11n_rxreorder_timer_restart(tbl); + return ret; +} + +/* This function deletes an entry for a given TID/TA pair. + * + * The TID/TA are taken from del BA event body. + */ +void +nxpwifi_del_ba_tbl(struct nxpwifi_private *priv, int tid, u8 *peer_mac, + u8 type, int initiator) +{ + struct nxpwifi_rx_reorder_tbl *tbl; + struct nxpwifi_tx_ba_stream_tbl *ptx_tbl; + struct nxpwifi_ra_list_tbl *ra_list; + u8 cleanup_rx_reorder_tbl; + int tid_down; + + if (type == TYPE_DELBA_RECEIVE) + cleanup_rx_reorder_tbl = (initiator) ? true : false; + else + cleanup_rx_reorder_tbl = (initiator) ? false : true; + + nxpwifi_dbg(priv->adapter, EVENT, "event: DELBA: %pM tid=%d initiator=%d\n", + peer_mac, tid, initiator); + + if (cleanup_rx_reorder_tbl) { + tbl = nxpwifi_11n_get_rx_reorder_tbl(priv, tid, peer_mac); + if (!tbl) { + nxpwifi_dbg(priv->adapter, EVENT, + "event: TID, TA not found in table\n"); + return; + } + nxpwifi_del_rx_reorder_entry(priv, tbl); + } else { + ptx_tbl = nxpwifi_get_ba_tbl(priv, tid, peer_mac); + if (!ptx_tbl) { + nxpwifi_dbg(priv->adapter, EVENT, + "event: TID, RA not found in table\n"); + return; + } + + tid_down = nxpwifi_wmm_downgrade_tid(priv, tid); + ra_list = nxpwifi_wmm_get_ralist_node(priv, tid_down, peer_mac); + if (ra_list) { + ra_list->amsdu_in_ampdu = false; + ra_list->ba_status = BA_SETUP_NONE; + } + spin_lock_bh(&priv->tx_ba_stream_tbl_lock); + nxpwifi_11n_delete_tx_ba_stream_tbl_entry(priv, ptx_tbl); + spin_unlock_bh(&priv->tx_ba_stream_tbl_lock); + } +} + +/* This function handles the command response of an add BA response. + * + * Handling includes changing the header fields into CPU format and + * creating the stream, provided the add BA is accepted. + */ +int nxpwifi_ret_11n_addba_resp(struct nxpwifi_private *priv, + struct host_cmd_ds_command *resp) +{ + struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &resp->params.add_ba_rsp; + int tid, win_size; + struct nxpwifi_rx_reorder_tbl *tbl; + u16 block_ack_param_set; + + block_ack_param_set = le16_to_cpu(add_ba_rsp->block_ack_param_set); + + tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK) + >> BLOCKACKPARAM_TID_POS; + /* Check if we had rejected the ADDBA, if yes then do not create + * the stream + */ + if (le16_to_cpu(add_ba_rsp->status_code) != BA_RESULT_SUCCESS) { + nxpwifi_dbg(priv->adapter, ERROR, "ADDBA RSP: failed %pM tid=%d)\n", + add_ba_rsp->peer_mac_addr, tid); + + tbl = nxpwifi_11n_get_rx_reorder_tbl(priv, tid, + add_ba_rsp->peer_mac_addr); + if (tbl) + nxpwifi_del_rx_reorder_entry(priv, tbl); + + return 0; + } + + win_size = (block_ack_param_set & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) + >> BLOCKACKPARAM_WINSIZE_POS; + + tbl = nxpwifi_11n_get_rx_reorder_tbl(priv, tid, + add_ba_rsp->peer_mac_addr); + if (tbl) { + if ((block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) && + priv->add_ba_param.rx_amsdu && + priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED) + tbl->amsdu = true; + else + tbl->amsdu = false; + } + + nxpwifi_dbg(priv->adapter, CMD, + "cmd: ADDBA RSP: %pM tid=%d ssn=%d win_size=%d\n", + add_ba_rsp->peer_mac_addr, tid, add_ba_rsp->ssn, win_size); + + return 0; +} + +/* This function handles BA stream timeout event by preparing and sending + * a command to the firmware. + */ +void nxpwifi_11n_ba_stream_timeout(struct nxpwifi_private *priv, + struct host_cmd_ds_11n_batimeout *event) +{ + struct host_cmd_ds_11n_delba delba; + + memset(&delba, 0, sizeof(struct host_cmd_ds_11n_delba)); + memcpy(delba.peer_mac_addr, event->peer_mac_addr, ETH_ALEN); + + delba.del_ba_param_set |= + cpu_to_le16((u16)event->tid << DELBA_TID_POS); + delba.del_ba_param_set |= + cpu_to_le16((u16)event->origninator << DELBA_INITIATOR_POS); + delba.reason_code = cpu_to_le16(WLAN_REASON_QSTA_TIMEOUT); + nxpwifi_send_cmd(priv, HOST_CMD_11N_DELBA, 0, 0, &delba, false); +} + +/* This function cleans up the Rx reorder table by deleting all the entries + * and re-initializing. + */ +void nxpwifi_11n_cleanup_reorder_tbl(struct nxpwifi_private *priv) +{ + struct nxpwifi_rx_reorder_tbl *del_tbl_ptr, *tmp_node; + + spin_lock_bh(&priv->rx_reorder_tbl_lock); + list_for_each_entry_safe(del_tbl_ptr, tmp_node, + &priv->rx_reorder_tbl_ptr, list) { + spin_unlock_bh(&priv->rx_reorder_tbl_lock); + nxpwifi_del_rx_reorder_entry(priv, del_tbl_ptr); + spin_lock_bh(&priv->rx_reorder_tbl_lock); + } + INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); + spin_unlock_bh(&priv->rx_reorder_tbl_lock); + + nxpwifi_reset_11n_rx_seq_num(priv); +} + +/* This function updates all rx_reorder_tbl's flags. + */ +void nxpwifi_update_rxreor_flags(struct nxpwifi_adapter *adapter, u8 flags) +{ + struct nxpwifi_private *priv; + struct nxpwifi_rx_reorder_tbl *tbl; + int i; + + for (i = 0; i < adapter->priv_num; i++) { + priv = adapter->priv[i]; + + spin_lock_bh(&priv->rx_reorder_tbl_lock); + list_for_each_entry(tbl, &priv->rx_reorder_tbl_ptr, list) + tbl->flags = flags; + spin_unlock_bh(&priv->rx_reorder_tbl_lock); + } +} + +/* This function update all the rx_win_size based on coex flag + */ +static void nxpwifi_update_ampdu_rxwinsize(struct nxpwifi_adapter *adapter, + bool coex_flag) +{ + u8 i; + u32 rx_win_size; + struct nxpwifi_private *priv; + + dev_dbg(adapter->dev, "Update rxwinsize %d\n", coex_flag); + + for (i = 0; i < adapter->priv_num; i++) { + priv = adapter->priv[i]; + rx_win_size = priv->add_ba_param.rx_win_size; + if (coex_flag) { + if (priv->bss_type == NXPWIFI_BSS_TYPE_STA) + priv->add_ba_param.rx_win_size = + NXPWIFI_STA_COEX_AMPDU_DEF_RXWINSIZE; + if (priv->bss_type == NXPWIFI_BSS_TYPE_UAP) + priv->add_ba_param.rx_win_size = + NXPWIFI_UAP_COEX_AMPDU_DEF_RXWINSIZE; + } else { + if (priv->bss_type == NXPWIFI_BSS_TYPE_STA) + priv->add_ba_param.rx_win_size = + NXPWIFI_STA_AMPDU_DEF_RXWINSIZE; + if (priv->bss_type == NXPWIFI_BSS_TYPE_UAP) + priv->add_ba_param.rx_win_size = + NXPWIFI_UAP_AMPDU_DEF_RXWINSIZE; + } + + if (adapter->coex_win_size && adapter->coex_rx_win_size) + priv->add_ba_param.rx_win_size = + adapter->coex_rx_win_size; + + if (rx_win_size != priv->add_ba_param.rx_win_size) { + if (!priv->media_connected) + continue; + for (i = 0; i < MAX_NUM_TID; i++) + nxpwifi_11n_delba(priv, i); + } + } +} + +/* This function check coex for RX BA + */ +void nxpwifi_coex_ampdu_rxwinsize(struct nxpwifi_adapter *adapter) +{ + u8 i; + struct nxpwifi_private *priv; + u8 count = 0; + + for (i = 0; i < adapter->priv_num; i++) { + priv = adapter->priv[i]; + if (GET_BSS_ROLE(priv) == NXPWIFI_BSS_ROLE_STA) { + if (priv->media_connected) + count++; + } + if (GET_BSS_ROLE(priv) == NXPWIFI_BSS_ROLE_UAP) { + if (priv->bss_started) + count++; + } + if (count >= NXPWIFI_BSS_COEX_COUNT) + break; + } + if (count >= NXPWIFI_BSS_COEX_COUNT) + nxpwifi_update_ampdu_rxwinsize(adapter, true); + else + nxpwifi_update_ampdu_rxwinsize(adapter, false); +} + +/* This function handles rxba_sync event + */ +void nxpwifi_11n_rxba_sync_event(struct nxpwifi_private *priv, + u8 *event_buf, u16 len) +{ + struct nxpwifi_ie_types_rxba_sync *tlv_rxba = (void *)event_buf; + u16 tlv_type, tlv_len; + struct nxpwifi_rx_reorder_tbl *rx_reor_tbl_ptr; + u8 i, j; + u16 seq_num, tlv_seq_num, tlv_bitmap_len; + int tlv_buf_left = len; + int ret; + u8 *tmp; + + nxpwifi_dbg_dump(priv->adapter, EVT_D, "RXBA_SYNC event:", + event_buf, len); + while (tlv_buf_left > sizeof(*tlv_rxba)) { + tlv_type = le16_to_cpu(tlv_rxba->header.type); + tlv_len = le16_to_cpu(tlv_rxba->header.len); + if (size_add(sizeof(tlv_rxba->header), tlv_len) > tlv_buf_left) { + nxpwifi_dbg(priv->adapter, WARN, + "TLV size (%zu) overflows event_buf buf_left=%d\n", + size_add(sizeof(tlv_rxba->header), tlv_len), + tlv_buf_left); + return; + } + + if (tlv_type != TLV_TYPE_RXBA_SYNC) { + nxpwifi_dbg(priv->adapter, ERROR, + "Wrong TLV id=0x%x\n", tlv_type); + return; + } + + tlv_seq_num = le16_to_cpu(tlv_rxba->seq_num); + tlv_bitmap_len = le16_to_cpu(tlv_rxba->bitmap_len); + if (size_add(sizeof(*tlv_rxba), tlv_bitmap_len) > tlv_buf_left) { + nxpwifi_dbg(priv->adapter, WARN, + "TLV size (%zu) overflows event_buf buf_left=%d\n", + size_add(sizeof(*tlv_rxba), tlv_bitmap_len), + tlv_buf_left); + return; + } + + nxpwifi_dbg(priv->adapter, INFO, + "%pM tid=%d seq_num=%d bitmap_len=%d\n", + tlv_rxba->mac, tlv_rxba->tid, tlv_seq_num, + tlv_bitmap_len); + + rx_reor_tbl_ptr = + nxpwifi_11n_get_rx_reorder_tbl(priv, tlv_rxba->tid, + tlv_rxba->mac); + if (!rx_reor_tbl_ptr) { + nxpwifi_dbg(priv->adapter, ERROR, + "Can not find rx_reorder_tbl!"); + return; + } + + for (i = 0; i < tlv_bitmap_len; i++) { + for (j = 0 ; j < 8; j++) { + if (tlv_rxba->bitmap[i] & (1 << j)) { + seq_num = (MAX_TID_VALUE - 1) & + (tlv_seq_num + i * 8 + j); + + nxpwifi_dbg(priv->adapter, ERROR, + "drop packet,seq=%d\n", + seq_num); + + ret = nxpwifi_11n_rx_reorder_pkt + (priv, seq_num, tlv_rxba->tid, + tlv_rxba->mac, 0, NULL); + + if (ret) + nxpwifi_dbg(priv->adapter, + ERROR, + "Fail to drop packet"); + } + } + } + + tlv_buf_left -= (sizeof(tlv_rxba->header) + tlv_len); + tmp = (u8 *)tlv_rxba + sizeof(tlv_rxba->header) + tlv_len; + tlv_rxba = (struct nxpwifi_ie_types_rxba_sync *)tmp; + } +} diff --git a/drivers/net/wireless/nxp/nxpwifi/11n_rxreorder.h b/drivers/net/wireless/nxp/nxpwifi/11n_rxreorder.h new file mode 100644 index 000000000000..9b5dd4899f0e --- /dev/null +++ b/drivers/net/wireless/nxp/nxpwifi/11n_rxreorder.h @@ -0,0 +1,72 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * NXP Wireless LAN device driver: 802.11n RX Re-ordering + * + * Copyright 2011-2024 NXP + */ + +#ifndef _NXPWIFI_11N_RXREORDER_H_ +#define _NXPWIFI_11N_RXREORDER_H_ + +#define MIN_FLUSH_TIMER_MS 50 +#define MIN_FLUSH_TIMER_15_MS 15 +#define NXPWIFI_BA_WIN_SIZE_32 32 + +#define PKT_TYPE_BAR 0xE7 +#define MAX_TID_VALUE (2 << 11) +#define TWOPOW11 (2 << 10) + +#define BLOCKACKPARAM_TID_POS 2 +#define BLOCKACKPARAM_AMSDU_SUPP_MASK 0x1 +#define BLOCKACKPARAM_WINSIZE_POS 6 +#define DELBA_TID_POS 12 +#define DELBA_INITIATOR_POS 11 +#define TYPE_DELBA_SENT 1 +#define TYPE_DELBA_RECEIVE 2 +#define IMMEDIATE_BLOCK_ACK 0x2 + +#define ADDBA_RSP_STATUS_ACCEPT 0 + +#define NXPWIFI_DEF_11N_RX_SEQ_NUM 0xffff +#define BA_SETUP_MAX_PACKET_THRESHOLD 16 +#define BA_SETUP_PACKET_OFFSET 16 + +enum nxpwifi_rxreor_flags { + RXREOR_FORCE_NO_DROP = 1 << 0, + RXREOR_INIT_WINDOW_SHIFT = 1 << 1, +}; + +static inline void nxpwifi_reset_11n_rx_seq_num(struct nxpwifi_private *priv) +{ + memset(priv->rx_seq, 0xff, sizeof(priv->rx_seq)); +} + +int nxpwifi_11n_rx_reorder_pkt(struct nxpwifi_private *, + u16 seqNum, + u16 tid, u8 *ta, + u8 pkttype, void *payload); +void nxpwifi_del_ba_tbl(struct nxpwifi_private *priv, int tid, + u8 *peer_mac, u8 type, int initiator); +void nxpwifi_11n_ba_stream_timeout(struct nxpwifi_private *priv, + struct host_cmd_ds_11n_batimeout *event); +int nxpwifi_ret_11n_addba_resp(struct nxpwifi_private *priv, + struct host_cmd_ds_command + *resp); +int nxpwifi_cmd_11n_delba(struct host_cmd_ds_command *cmd, + void *data_buf); +int nxpwifi_cmd_11n_addba_rsp_gen(struct nxpwifi_private *priv, + struct host_cmd_ds_command *cmd, + struct host_cmd_ds_11n_addba_req + *cmd_addba_req); +int nxpwifi_cmd_11n_addba_req(struct host_cmd_ds_command *cmd, + void *data_buf); +void nxpwifi_11n_cleanup_reorder_tbl(struct nxpwifi_private *priv); +struct nxpwifi_rx_reorder_tbl * +nxpwifi_11n_get_rxreorder_tbl(struct nxpwifi_private *priv, int tid, u8 *ta); +struct nxpwifi_rx_reorder_tbl * +nxpwifi_11n_get_rx_reorder_tbl(struct nxpwifi_private *priv, int tid, u8 *ta); +void nxpwifi_11n_del_rx_reorder_tbl_by_ta(struct nxpwifi_private *priv, u8 *ta); +void nxpwifi_update_rxreor_flags(struct nxpwifi_adapter *adapter, u8 flags); +void nxpwifi_11n_rxba_sync_event(struct nxpwifi_private *priv, + u8 *event_buf, u16 len); +#endif /* _NXPWIFI_11N_RXREORDER_H_ */