| /* |
| * Intel Wireless Multicomm 3200 WiFi driver |
| * |
| * Copyright (C) 2009 Intel Corporation. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Intel Corporation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * |
| * Intel Corporation <ilw@linux.intel.com> |
| * Samuel Ortiz <samuel.ortiz@intel.com> |
| * Zhu Yi <yi.zhu@intel.com> |
| * |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/netdevice.h> |
| #include <linux/sched.h> |
| #include <linux/etherdevice.h> |
| #include <linux/wireless.h> |
| #include <linux/ieee80211.h> |
| #include <linux/if_arp.h> |
| #include <linux/list.h> |
| #include <net/iw_handler.h> |
| |
| #include "iwm.h" |
| #include "debug.h" |
| #include "hal.h" |
| #include "umac.h" |
| #include "lmac.h" |
| #include "commands.h" |
| #include "rx.h" |
| #include "cfg80211.h" |
| #include "eeprom.h" |
| |
| static int iwm_rx_check_udma_hdr(struct iwm_udma_in_hdr *hdr) |
| { |
| if ((le32_to_cpu(hdr->cmd) == UMAC_PAD_TERMINAL) || |
| (le32_to_cpu(hdr->size) == UMAC_PAD_TERMINAL)) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| static inline int iwm_rx_resp_size(struct iwm_udma_in_hdr *hdr) |
| { |
| return ALIGN(le32_to_cpu(hdr->size) + sizeof(struct iwm_udma_in_hdr), |
| 16); |
| } |
| |
| /* |
| * Notification handlers: |
| * |
| * For every possible notification we can receive from the |
| * target, we have a handler. |
| * When we get a target notification, and there is no one |
| * waiting for it, it's just processed through the rx code |
| * path: |
| * |
| * iwm_rx_handle() |
| * -> iwm_rx_handle_umac() |
| * -> iwm_rx_handle_wifi() |
| * -> iwm_rx_handle_resp() |
| * -> iwm_ntf_*() |
| * |
| * OR |
| * |
| * -> iwm_rx_handle_non_wifi() |
| * |
| * If there are processes waiting for this notification, then |
| * iwm_rx_handle_wifi() just wakes those processes up and they |
| * grab the pending notification. |
| */ |
| static int iwm_ntf_error(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_notif_error *error; |
| struct iwm_fw_error_hdr *fw_err; |
| |
| error = (struct iwm_umac_notif_error *)buf; |
| fw_err = &error->err; |
| |
| memcpy(iwm->last_fw_err, fw_err, sizeof(struct iwm_fw_error_hdr)); |
| |
| IWM_ERR(iwm, "%cMAC FW ERROR:\n", |
| (le32_to_cpu(fw_err->category) == UMAC_SYS_ERR_CAT_LMAC) ? 'L' : 'U'); |
| IWM_ERR(iwm, "\tCategory: %d\n", le32_to_cpu(fw_err->category)); |
| IWM_ERR(iwm, "\tStatus: 0x%x\n", le32_to_cpu(fw_err->status)); |
| IWM_ERR(iwm, "\tPC: 0x%x\n", le32_to_cpu(fw_err->pc)); |
| IWM_ERR(iwm, "\tblink1: %d\n", le32_to_cpu(fw_err->blink1)); |
| IWM_ERR(iwm, "\tblink2: %d\n", le32_to_cpu(fw_err->blink2)); |
| IWM_ERR(iwm, "\tilink1: %d\n", le32_to_cpu(fw_err->ilink1)); |
| IWM_ERR(iwm, "\tilink2: %d\n", le32_to_cpu(fw_err->ilink2)); |
| IWM_ERR(iwm, "\tData1: 0x%x\n", le32_to_cpu(fw_err->data1)); |
| IWM_ERR(iwm, "\tData2: 0x%x\n", le32_to_cpu(fw_err->data2)); |
| IWM_ERR(iwm, "\tLine number: %d\n", le32_to_cpu(fw_err->line_num)); |
| IWM_ERR(iwm, "\tUMAC status: 0x%x\n", le32_to_cpu(fw_err->umac_status)); |
| IWM_ERR(iwm, "\tLMAC status: 0x%x\n", le32_to_cpu(fw_err->lmac_status)); |
| IWM_ERR(iwm, "\tSDIO status: 0x%x\n", le32_to_cpu(fw_err->sdio_status)); |
| |
| iwm_resetting(iwm); |
| |
| return 0; |
| } |
| |
| static int iwm_ntf_umac_alive(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_notif_alive *alive_resp = |
| (struct iwm_umac_notif_alive *)(buf); |
| u16 status = le16_to_cpu(alive_resp->status); |
| |
| if (status == UMAC_NTFY_ALIVE_STATUS_ERR) { |
| IWM_ERR(iwm, "Receive error UMAC_ALIVE\n"); |
| return -EIO; |
| } |
| |
| iwm_tx_credit_init_pools(iwm, alive_resp); |
| |
| return 0; |
| } |
| |
| static int iwm_ntf_init_complete(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| struct wiphy *wiphy = iwm_to_wiphy(iwm); |
| struct iwm_umac_notif_init_complete *init_complete = |
| (struct iwm_umac_notif_init_complete *)(buf); |
| u16 status = le16_to_cpu(init_complete->status); |
| bool blocked = (status == UMAC_NTFY_INIT_COMPLETE_STATUS_ERR); |
| |
| if (blocked) |
| IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is on (radio off)\n"); |
| else |
| IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is off (radio on)\n"); |
| |
| wiphy_rfkill_set_hw_state(wiphy, blocked); |
| |
| return 0; |
| } |
| |
| static int iwm_ntf_tx_credit_update(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| int pool_nr, total_freed_pages; |
| unsigned long pool_map; |
| int i, id; |
| struct iwm_umac_notif_page_dealloc *dealloc = |
| (struct iwm_umac_notif_page_dealloc *)buf; |
| |
| pool_nr = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_CNT); |
| pool_map = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_MSK); |
| |
| IWM_DBG_TX(iwm, DBG, "UMAC dealloc notification: pool nr %d, " |
| "update map 0x%lx\n", pool_nr, pool_map); |
| |
| spin_lock(&iwm->tx_credit.lock); |
| |
| for (i = 0; i < pool_nr; i++) { |
| id = GET_VAL32(dealloc->grp_info[i], |
| UMAC_DEALLOC_NTFY_GROUP_NUM); |
| if (test_bit(id, &pool_map)) { |
| total_freed_pages = GET_VAL32(dealloc->grp_info[i], |
| UMAC_DEALLOC_NTFY_PAGE_CNT); |
| iwm_tx_credit_inc(iwm, id, total_freed_pages); |
| } |
| } |
| |
| spin_unlock(&iwm->tx_credit.lock); |
| |
| return 0; |
| } |
| |
| static int iwm_ntf_umac_reset(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, struct iwm_wifi_cmd *cmd) |
| { |
| IWM_DBG_NTF(iwm, DBG, "UMAC RESET done\n"); |
| |
| return 0; |
| } |
| |
| static int iwm_ntf_lmac_version(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| IWM_DBG_NTF(iwm, INFO, "LMAC Version: %x.%x\n", buf[9], buf[8]); |
| |
| return 0; |
| } |
| |
| static int iwm_ntf_tx(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_lmac_tx_resp *tx_resp; |
| struct iwm_umac_wifi_in_hdr *hdr; |
| |
| tx_resp = (struct iwm_lmac_tx_resp *) |
| (buf + sizeof(struct iwm_umac_wifi_in_hdr)); |
| hdr = (struct iwm_umac_wifi_in_hdr *)buf; |
| |
| IWM_DBG_TX(iwm, DBG, "REPLY_TX, buf size: %lu\n", buf_size); |
| |
| IWM_DBG_TX(iwm, DBG, "Seqnum: %d\n", |
| le16_to_cpu(hdr->sw_hdr.cmd.seq_num)); |
| IWM_DBG_TX(iwm, DBG, "\tFrame cnt: %d\n", tx_resp->frame_cnt); |
| IWM_DBG_TX(iwm, DBG, "\tRetry cnt: %d\n", |
| le16_to_cpu(tx_resp->retry_cnt)); |
| IWM_DBG_TX(iwm, DBG, "\tSeq ctl: %d\n", le16_to_cpu(tx_resp->seq_ctl)); |
| IWM_DBG_TX(iwm, DBG, "\tByte cnt: %d\n", |
| le16_to_cpu(tx_resp->byte_cnt)); |
| IWM_DBG_TX(iwm, DBG, "\tStatus: 0x%x\n", le32_to_cpu(tx_resp->status)); |
| |
| return 0; |
| } |
| |
| |
| static int iwm_ntf_calib_res(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, struct iwm_wifi_cmd *cmd) |
| { |
| u8 opcode; |
| u8 *calib_buf; |
| struct iwm_lmac_calib_hdr *hdr = (struct iwm_lmac_calib_hdr *) |
| (buf + sizeof(struct iwm_umac_wifi_in_hdr)); |
| |
| opcode = hdr->opcode; |
| |
| BUG_ON(opcode >= CALIBRATION_CMD_NUM || |
| opcode < PHY_CALIBRATE_OPCODES_NUM); |
| |
| IWM_DBG_NTF(iwm, DBG, "Store calibration result for opcode: %d\n", |
| opcode); |
| |
| buf_size -= sizeof(struct iwm_umac_wifi_in_hdr); |
| calib_buf = iwm->calib_res[opcode].buf; |
| |
| if (!calib_buf || (iwm->calib_res[opcode].size < buf_size)) { |
| kfree(calib_buf); |
| calib_buf = kzalloc(buf_size, GFP_KERNEL); |
| if (!calib_buf) { |
| IWM_ERR(iwm, "Memory allocation failed: calib_res\n"); |
| return -ENOMEM; |
| } |
| iwm->calib_res[opcode].buf = calib_buf; |
| iwm->calib_res[opcode].size = buf_size; |
| } |
| |
| memcpy(calib_buf, hdr, buf_size); |
| set_bit(opcode - PHY_CALIBRATE_OPCODES_NUM, &iwm->calib_done_map); |
| |
| return 0; |
| } |
| |
| static int iwm_ntf_calib_complete(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| IWM_DBG_NTF(iwm, DBG, "Calibration completed\n"); |
| |
| return 0; |
| } |
| |
| static int iwm_ntf_calib_cfg(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_lmac_cal_cfg_resp *cal_resp; |
| |
| cal_resp = (struct iwm_lmac_cal_cfg_resp *) |
| (buf + sizeof(struct iwm_umac_wifi_in_hdr)); |
| |
| IWM_DBG_NTF(iwm, DBG, "Calibration CFG command status: %d\n", |
| le32_to_cpu(cal_resp->status)); |
| |
| return 0; |
| } |
| |
| static int iwm_ntf_wifi_status(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_notif_wifi_status *status = |
| (struct iwm_umac_notif_wifi_status *)buf; |
| |
| iwm->core_enabled |= le16_to_cpu(status->status); |
| |
| return 0; |
| } |
| |
| static struct iwm_rx_ticket_node * |
| iwm_rx_ticket_node_alloc(struct iwm_priv *iwm, struct iwm_rx_ticket *ticket) |
| { |
| struct iwm_rx_ticket_node *ticket_node; |
| |
| ticket_node = kzalloc(sizeof(struct iwm_rx_ticket_node), GFP_KERNEL); |
| if (!ticket_node) { |
| IWM_ERR(iwm, "Couldn't allocate ticket node\n"); |
| return ERR_PTR(-ENOMEM); |
| } |
| |
| ticket_node->ticket = kzalloc(sizeof(struct iwm_rx_ticket), GFP_KERNEL); |
| if (!ticket_node->ticket) { |
| IWM_ERR(iwm, "Couldn't allocate RX ticket\n"); |
| kfree(ticket_node); |
| return ERR_PTR(-ENOMEM); |
| } |
| |
| memcpy(ticket_node->ticket, ticket, sizeof(struct iwm_rx_ticket)); |
| INIT_LIST_HEAD(&ticket_node->node); |
| |
| return ticket_node; |
| } |
| |
| static void iwm_rx_ticket_node_free(struct iwm_rx_ticket_node *ticket_node) |
| { |
| kfree(ticket_node->ticket); |
| kfree(ticket_node); |
| } |
| |
| static struct iwm_rx_packet *iwm_rx_packet_get(struct iwm_priv *iwm, u16 id) |
| { |
| u8 id_hash = IWM_RX_ID_GET_HASH(id); |
| struct iwm_rx_packet *packet; |
| |
| list_for_each_entry(packet, &iwm->rx_packets[id_hash], node) |
| if (packet->id == id) |
| return packet; |
| |
| return NULL; |
| } |
| |
| static struct iwm_rx_packet *iwm_rx_packet_alloc(struct iwm_priv *iwm, u8 *buf, |
| u32 size, u16 id) |
| { |
| struct iwm_rx_packet *packet; |
| |
| packet = kzalloc(sizeof(struct iwm_rx_packet), GFP_KERNEL); |
| if (!packet) { |
| IWM_ERR(iwm, "Couldn't allocate packet\n"); |
| return ERR_PTR(-ENOMEM); |
| } |
| |
| packet->skb = dev_alloc_skb(size); |
| if (!packet->skb) { |
| IWM_ERR(iwm, "Couldn't allocate packet SKB\n"); |
| kfree(packet); |
| return ERR_PTR(-ENOMEM); |
| } |
| |
| packet->pkt_size = size; |
| |
| skb_put(packet->skb, size); |
| memcpy(packet->skb->data, buf, size); |
| INIT_LIST_HEAD(&packet->node); |
| packet->id = id; |
| |
| return packet; |
| } |
| |
| void iwm_rx_free(struct iwm_priv *iwm) |
| { |
| struct iwm_rx_ticket_node *ticket, *nt; |
| struct iwm_rx_packet *packet, *np; |
| int i; |
| |
| list_for_each_entry_safe(ticket, nt, &iwm->rx_tickets, node) { |
| list_del(&ticket->node); |
| iwm_rx_ticket_node_free(ticket); |
| } |
| |
| for (i = 0; i < IWM_RX_ID_HASH; i++) { |
| list_for_each_entry_safe(packet, np, &iwm->rx_packets[i], |
| node) { |
| list_del(&packet->node); |
| kfree_skb(packet->skb); |
| kfree(packet); |
| } |
| } |
| } |
| |
| static int iwm_ntf_rx_ticket(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_notif_rx_ticket *ntf_rx_ticket = |
| (struct iwm_umac_notif_rx_ticket *)buf; |
| struct iwm_rx_ticket *ticket = |
| (struct iwm_rx_ticket *)ntf_rx_ticket->tickets; |
| int i, schedule_rx = 0; |
| |
| for (i = 0; i < ntf_rx_ticket->num_tickets; i++) { |
| struct iwm_rx_ticket_node *ticket_node; |
| |
| switch (le16_to_cpu(ticket->action)) { |
| case IWM_RX_TICKET_RELEASE: |
| case IWM_RX_TICKET_DROP: |
| /* We can push the packet to the stack */ |
| ticket_node = iwm_rx_ticket_node_alloc(iwm, ticket); |
| if (IS_ERR(ticket_node)) |
| return PTR_ERR(ticket_node); |
| |
| IWM_DBG_RX(iwm, DBG, "TICKET %s(%d)\n", |
| ticket->action == IWM_RX_TICKET_RELEASE ? |
| "RELEASE" : "DROP", |
| ticket->id); |
| list_add_tail(&ticket_node->node, &iwm->rx_tickets); |
| |
| /* |
| * We received an Rx ticket, most likely there's |
| * a packet pending for it, it's not worth going |
| * through the packet hash list to double check. |
| * Let's just fire the rx worker.. |
| */ |
| schedule_rx = 1; |
| |
| break; |
| |
| default: |
| IWM_ERR(iwm, "Invalid RX ticket action: 0x%x\n", |
| ticket->action); |
| } |
| |
| ticket++; |
| } |
| |
| if (schedule_rx) |
| queue_work(iwm->rx_wq, &iwm->rx_worker); |
| |
| return 0; |
| } |
| |
| static int iwm_ntf_rx_packet(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_wifi_in_hdr *wifi_hdr; |
| struct iwm_rx_packet *packet; |
| u16 id, buf_offset; |
| u32 packet_size; |
| |
| IWM_DBG_RX(iwm, DBG, "\n"); |
| |
| wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf; |
| id = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num); |
| buf_offset = sizeof(struct iwm_umac_wifi_in_hdr); |
| packet_size = buf_size - sizeof(struct iwm_umac_wifi_in_hdr); |
| |
| IWM_DBG_RX(iwm, DBG, "CMD:0x%x, seqnum: %d, packet size: %d\n", |
| wifi_hdr->sw_hdr.cmd.cmd, id, packet_size); |
| IWM_DBG_RX(iwm, DBG, "Packet id: %d\n", id); |
| IWM_HEXDUMP(iwm, DBG, RX, "PACKET: ", buf + buf_offset, packet_size); |
| |
| packet = iwm_rx_packet_alloc(iwm, buf + buf_offset, packet_size, id); |
| if (IS_ERR(packet)) |
| return PTR_ERR(packet); |
| |
| list_add_tail(&packet->node, &iwm->rx_packets[IWM_RX_ID_GET_HASH(id)]); |
| |
| /* We might (unlikely) have received the packet _after_ the ticket */ |
| queue_work(iwm->rx_wq, &iwm->rx_worker); |
| |
| return 0; |
| } |
| |
| /* MLME handlers */ |
| static int iwm_mlme_assoc_start(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_notif_assoc_start *start; |
| |
| start = (struct iwm_umac_notif_assoc_start *)buf; |
| |
| IWM_DBG_MLME(iwm, INFO, "Association with %pM Started, reason: %d\n", |
| start->bssid, le32_to_cpu(start->roam_reason)); |
| |
| wake_up_interruptible(&iwm->mlme_queue); |
| |
| return 0; |
| } |
| |
| static u8 iwm_is_open_wep_profile(struct iwm_priv *iwm) |
| { |
| if ((iwm->umac_profile->sec.ucast_cipher == UMAC_CIPHER_TYPE_WEP_40 || |
| iwm->umac_profile->sec.ucast_cipher == UMAC_CIPHER_TYPE_WEP_104) && |
| (iwm->umac_profile->sec.ucast_cipher == |
| iwm->umac_profile->sec.mcast_cipher) && |
| (iwm->umac_profile->sec.auth_type == UMAC_AUTH_TYPE_OPEN)) |
| return 1; |
| |
| return 0; |
| } |
| |
| static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| struct wiphy *wiphy = iwm_to_wiphy(iwm); |
| struct ieee80211_channel *chan; |
| struct iwm_umac_notif_assoc_complete *complete = |
| (struct iwm_umac_notif_assoc_complete *)buf; |
| |
| IWM_DBG_MLME(iwm, INFO, "Association with %pM completed, status: %d\n", |
| complete->bssid, complete->status); |
| |
| switch (le32_to_cpu(complete->status)) { |
| case UMAC_ASSOC_COMPLETE_SUCCESS: |
| chan = ieee80211_get_channel(wiphy, |
| ieee80211_channel_to_frequency(complete->channel)); |
| if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) { |
| /* Associated to a unallowed channel, disassociate. */ |
| __iwm_invalidate_mlme_profile(iwm); |
| IWM_WARN(iwm, "Couldn't associate with %pM due to " |
| "channel %d is disabled. Check your local " |
| "regulatory setting.\n", |
| complete->bssid, complete->channel); |
| goto failure; |
| } |
| |
| set_bit(IWM_STATUS_ASSOCIATED, &iwm->status); |
| memcpy(iwm->bssid, complete->bssid, ETH_ALEN); |
| iwm->channel = complete->channel; |
| |
| /* Internal roaming state, avoid notifying SME. */ |
| if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status) |
| && iwm->conf.mode == UMAC_MODE_BSS) { |
| cancel_delayed_work(&iwm->disconnect); |
| cfg80211_roamed(iwm_to_ndev(iwm), |
| complete->bssid, |
| iwm->req_ie, iwm->req_ie_len, |
| iwm->resp_ie, iwm->resp_ie_len, |
| GFP_KERNEL); |
| break; |
| } |
| |
| iwm_link_on(iwm); |
| |
| if (iwm->conf.mode == UMAC_MODE_IBSS) |
| goto ibss; |
| |
| if (!test_bit(IWM_STATUS_RESETTING, &iwm->status)) |
| cfg80211_connect_result(iwm_to_ndev(iwm), |
| complete->bssid, |
| iwm->req_ie, iwm->req_ie_len, |
| iwm->resp_ie, iwm->resp_ie_len, |
| WLAN_STATUS_SUCCESS, |
| GFP_KERNEL); |
| else |
| cfg80211_roamed(iwm_to_ndev(iwm), |
| complete->bssid, |
| iwm->req_ie, iwm->req_ie_len, |
| iwm->resp_ie, iwm->resp_ie_len, |
| GFP_KERNEL); |
| break; |
| case UMAC_ASSOC_COMPLETE_FAILURE: |
| failure: |
| clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status); |
| memset(iwm->bssid, 0, ETH_ALEN); |
| iwm->channel = 0; |
| |
| /* Internal roaming state, avoid notifying SME. */ |
| if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status) |
| && iwm->conf.mode == UMAC_MODE_BSS) { |
| cancel_delayed_work(&iwm->disconnect); |
| break; |
| } |
| |
| iwm_link_off(iwm); |
| |
| if (iwm->conf.mode == UMAC_MODE_IBSS) |
| goto ibss; |
| |
| if (!test_bit(IWM_STATUS_RESETTING, &iwm->status)) |
| if (!iwm_is_open_wep_profile(iwm)) { |
| cfg80211_connect_result(iwm_to_ndev(iwm), |
| complete->bssid, |
| NULL, 0, NULL, 0, |
| WLAN_STATUS_UNSPECIFIED_FAILURE, |
| GFP_KERNEL); |
| } else { |
| /* Let's try shared WEP auth */ |
| IWM_ERR(iwm, "Trying WEP shared auth\n"); |
| schedule_work(&iwm->auth_retry_worker); |
| } |
| else |
| cfg80211_disconnected(iwm_to_ndev(iwm), 0, NULL, 0, |
| GFP_KERNEL); |
| break; |
| default: |
| break; |
| } |
| |
| clear_bit(IWM_STATUS_RESETTING, &iwm->status); |
| return 0; |
| |
| ibss: |
| cfg80211_ibss_joined(iwm_to_ndev(iwm), iwm->bssid, GFP_KERNEL); |
| clear_bit(IWM_STATUS_RESETTING, &iwm->status); |
| return 0; |
| } |
| |
| static int iwm_mlme_profile_invalidate(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_notif_profile_invalidate *invalid; |
| u32 reason; |
| |
| invalid = (struct iwm_umac_notif_profile_invalidate *)buf; |
| reason = le32_to_cpu(invalid->reason); |
| |
| IWM_DBG_MLME(iwm, INFO, "Profile Invalidated. Reason: %d\n", reason); |
| |
| if (reason != UMAC_PROFILE_INVALID_REQUEST && |
| test_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)) |
| cfg80211_connect_result(iwm_to_ndev(iwm), NULL, NULL, 0, NULL, |
| 0, WLAN_STATUS_UNSPECIFIED_FAILURE, |
| GFP_KERNEL); |
| |
| clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status); |
| clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status); |
| |
| iwm->umac_profile_active = 0; |
| memset(iwm->bssid, 0, ETH_ALEN); |
| iwm->channel = 0; |
| |
| iwm_link_off(iwm); |
| |
| wake_up_interruptible(&iwm->mlme_queue); |
| |
| return 0; |
| } |
| |
| #define IWM_DISCONNECT_INTERVAL (5 * HZ) |
| |
| static int iwm_mlme_connection_terminated(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| IWM_DBG_MLME(iwm, DBG, "Connection terminated\n"); |
| |
| schedule_delayed_work(&iwm->disconnect, IWM_DISCONNECT_INTERVAL); |
| |
| return 0; |
| } |
| |
| static int iwm_mlme_scan_complete(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| int ret; |
| struct iwm_umac_notif_scan_complete *scan_complete = |
| (struct iwm_umac_notif_scan_complete *)buf; |
| u32 result = le32_to_cpu(scan_complete->result); |
| |
| IWM_DBG_MLME(iwm, INFO, "type:0x%x result:0x%x seq:%d\n", |
| le32_to_cpu(scan_complete->type), |
| le32_to_cpu(scan_complete->result), |
| scan_complete->seq_num); |
| |
| if (!test_and_clear_bit(IWM_STATUS_SCANNING, &iwm->status)) { |
| IWM_ERR(iwm, "Scan complete while device not scanning\n"); |
| return -EIO; |
| } |
| if (!iwm->scan_request) |
| return 0; |
| |
| ret = iwm_cfg80211_inform_bss(iwm); |
| |
| cfg80211_scan_done(iwm->scan_request, |
| (result & UMAC_SCAN_RESULT_ABORTED) ? 1 : !!ret); |
| iwm->scan_request = NULL; |
| |
| return ret; |
| } |
| |
| static int iwm_mlme_update_sta_table(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_notif_sta_info *umac_sta = |
| (struct iwm_umac_notif_sta_info *)buf; |
| struct iwm_sta_info *sta; |
| int i; |
| |
| switch (le32_to_cpu(umac_sta->opcode)) { |
| case UMAC_OPCODE_ADD_MODIFY: |
| sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)]; |
| |
| IWM_DBG_MLME(iwm, INFO, "%s STA: ID = %d, Color = %d, " |
| "addr = %pM, qos = %d\n", |
| sta->valid ? "Modify" : "Add", |
| GET_VAL8(umac_sta->sta_id, LMAC_STA_ID), |
| GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR), |
| umac_sta->mac_addr, |
| umac_sta->flags & UMAC_STA_FLAG_QOS); |
| |
| sta->valid = 1; |
| sta->qos = umac_sta->flags & UMAC_STA_FLAG_QOS; |
| sta->color = GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR); |
| memcpy(sta->addr, umac_sta->mac_addr, ETH_ALEN); |
| break; |
| case UMAC_OPCODE_REMOVE: |
| IWM_DBG_MLME(iwm, INFO, "Remove STA: ID = %d, Color = %d, " |
| "addr = %pM\n", |
| GET_VAL8(umac_sta->sta_id, LMAC_STA_ID), |
| GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR), |
| umac_sta->mac_addr); |
| |
| sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)]; |
| |
| if (!memcmp(sta->addr, umac_sta->mac_addr, ETH_ALEN)) |
| sta->valid = 0; |
| |
| break; |
| case UMAC_OPCODE_CLEAR_ALL: |
| for (i = 0; i < IWM_STA_TABLE_NUM; i++) |
| iwm->sta_table[i].valid = 0; |
| |
| break; |
| default: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int iwm_mlme_medium_lost(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| struct wiphy *wiphy = iwm_to_wiphy(iwm); |
| |
| IWM_DBG_NTF(iwm, DBG, "WiFi/WiMax coexistence radio is OFF\n"); |
| |
| wiphy_rfkill_set_hw_state(wiphy, true); |
| |
| return 0; |
| } |
| |
| static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| struct wiphy *wiphy = iwm_to_wiphy(iwm); |
| struct ieee80211_mgmt *mgmt; |
| struct iwm_umac_notif_bss_info *umac_bss = |
| (struct iwm_umac_notif_bss_info *)buf; |
| struct ieee80211_channel *channel; |
| struct ieee80211_supported_band *band; |
| struct iwm_bss_info *bss; |
| s32 signal; |
| int freq; |
| u16 frame_len = le16_to_cpu(umac_bss->frame_len); |
| size_t bss_len = sizeof(struct iwm_umac_notif_bss_info) + frame_len; |
| |
| mgmt = (struct ieee80211_mgmt *)(umac_bss->frame_buf); |
| |
| IWM_DBG_MLME(iwm, DBG, "New BSS info entry: %pM\n", mgmt->bssid); |
| IWM_DBG_MLME(iwm, DBG, "\tType: 0x%x\n", le32_to_cpu(umac_bss->type)); |
| IWM_DBG_MLME(iwm, DBG, "\tTimestamp: %d\n", |
| le32_to_cpu(umac_bss->timestamp)); |
| IWM_DBG_MLME(iwm, DBG, "\tTable Index: %d\n", |
| le16_to_cpu(umac_bss->table_idx)); |
| IWM_DBG_MLME(iwm, DBG, "\tBand: %d\n", umac_bss->band); |
| IWM_DBG_MLME(iwm, DBG, "\tChannel: %d\n", umac_bss->channel); |
| IWM_DBG_MLME(iwm, DBG, "\tRSSI: %d\n", umac_bss->rssi); |
| IWM_DBG_MLME(iwm, DBG, "\tFrame Length: %d\n", frame_len); |
| |
| list_for_each_entry(bss, &iwm->bss_list, node) |
| if (bss->bss->table_idx == umac_bss->table_idx) |
| break; |
| |
| if (&bss->node != &iwm->bss_list) { |
| /* Remove the old BSS entry, we will add it back later. */ |
| list_del(&bss->node); |
| kfree(bss->bss); |
| } else { |
| /* New BSS entry */ |
| |
| bss = kzalloc(sizeof(struct iwm_bss_info), GFP_KERNEL); |
| if (!bss) { |
| IWM_ERR(iwm, "Couldn't allocate bss_info\n"); |
| return -ENOMEM; |
| } |
| } |
| |
| bss->bss = kzalloc(bss_len, GFP_KERNEL); |
| if (!bss->bss) { |
| kfree(bss); |
| IWM_ERR(iwm, "Couldn't allocate bss\n"); |
| return -ENOMEM; |
| } |
| |
| INIT_LIST_HEAD(&bss->node); |
| memcpy(bss->bss, umac_bss, bss_len); |
| |
| if (umac_bss->band == UMAC_BAND_2GHZ) |
| band = wiphy->bands[IEEE80211_BAND_2GHZ]; |
| else if (umac_bss->band == UMAC_BAND_5GHZ) |
| band = wiphy->bands[IEEE80211_BAND_5GHZ]; |
| else { |
| IWM_ERR(iwm, "Invalid band: %d\n", umac_bss->band); |
| goto err; |
| } |
| |
| freq = ieee80211_channel_to_frequency(umac_bss->channel); |
| channel = ieee80211_get_channel(wiphy, freq); |
| signal = umac_bss->rssi * 100; |
| |
| bss->cfg_bss = cfg80211_inform_bss_frame(wiphy, channel, |
| mgmt, frame_len, |
| signal, GFP_KERNEL); |
| if (!bss->cfg_bss) |
| goto err; |
| |
| list_add_tail(&bss->node, &iwm->bss_list); |
| |
| return 0; |
| err: |
| kfree(bss->bss); |
| kfree(bss); |
| |
| return -EINVAL; |
| } |
| |
| static int iwm_mlme_remove_bss(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_notif_bss_removed *bss_rm = |
| (struct iwm_umac_notif_bss_removed *)buf; |
| struct iwm_bss_info *bss, *next; |
| u16 table_idx; |
| int i; |
| |
| for (i = 0; i < le32_to_cpu(bss_rm->count); i++) { |
| table_idx = (le16_to_cpu(bss_rm->entries[i]) |
| & IWM_BSS_REMOVE_INDEX_MSK); |
| list_for_each_entry_safe(bss, next, &iwm->bss_list, node) |
| if (bss->bss->table_idx == cpu_to_le16(table_idx)) { |
| struct ieee80211_mgmt *mgmt; |
| |
| mgmt = (struct ieee80211_mgmt *) |
| (bss->bss->frame_buf); |
| IWM_DBG_MLME(iwm, ERR, |
| "BSS removed: %pM\n", |
| mgmt->bssid); |
| list_del(&bss->node); |
| kfree(bss->bss); |
| kfree(bss); |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int iwm_mlme_mgt_frame(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_notif_mgt_frame *mgt_frame = |
| (struct iwm_umac_notif_mgt_frame *)buf; |
| struct ieee80211_mgmt *mgt = (struct ieee80211_mgmt *)mgt_frame->frame; |
| |
| IWM_HEXDUMP(iwm, DBG, MLME, "MGT: ", mgt_frame->frame, |
| le16_to_cpu(mgt_frame->len)); |
| |
| if (ieee80211_is_assoc_req(mgt->frame_control)) { |
| iwm->req_ie_len = le16_to_cpu(mgt_frame->len) |
| - offsetof(struct ieee80211_mgmt, |
| u.assoc_req.variable); |
| kfree(iwm->req_ie); |
| iwm->req_ie = kmemdup(mgt->u.assoc_req.variable, |
| iwm->req_ie_len, GFP_KERNEL); |
| } else if (ieee80211_is_reassoc_req(mgt->frame_control)) { |
| iwm->req_ie_len = le16_to_cpu(mgt_frame->len) |
| - offsetof(struct ieee80211_mgmt, |
| u.reassoc_req.variable); |
| kfree(iwm->req_ie); |
| iwm->req_ie = kmemdup(mgt->u.reassoc_req.variable, |
| iwm->req_ie_len, GFP_KERNEL); |
| } else if (ieee80211_is_assoc_resp(mgt->frame_control)) { |
| iwm->resp_ie_len = le16_to_cpu(mgt_frame->len) |
| - offsetof(struct ieee80211_mgmt, |
| u.assoc_resp.variable); |
| kfree(iwm->resp_ie); |
| iwm->resp_ie = kmemdup(mgt->u.assoc_resp.variable, |
| iwm->resp_ie_len, GFP_KERNEL); |
| } else if (ieee80211_is_reassoc_resp(mgt->frame_control)) { |
| iwm->resp_ie_len = le16_to_cpu(mgt_frame->len) |
| - offsetof(struct ieee80211_mgmt, |
| u.reassoc_resp.variable); |
| kfree(iwm->resp_ie); |
| iwm->resp_ie = kmemdup(mgt->u.reassoc_resp.variable, |
| iwm->resp_ie_len, GFP_KERNEL); |
| } else { |
| IWM_ERR(iwm, "Unsupported management frame: 0x%x", |
| le16_to_cpu(mgt->frame_control)); |
| return 0; |
| } |
| |
| return 0; |
| } |
| |
| static int iwm_ntf_mlme(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_notif_wifi_if *notif = |
| (struct iwm_umac_notif_wifi_if *)buf; |
| |
| switch (notif->status) { |
| case WIFI_IF_NTFY_ASSOC_START: |
| return iwm_mlme_assoc_start(iwm, buf, buf_size, cmd); |
| case WIFI_IF_NTFY_ASSOC_COMPLETE: |
| return iwm_mlme_assoc_complete(iwm, buf, buf_size, cmd); |
| case WIFI_IF_NTFY_PROFILE_INVALIDATE_COMPLETE: |
| return iwm_mlme_profile_invalidate(iwm, buf, buf_size, cmd); |
| case WIFI_IF_NTFY_CONNECTION_TERMINATED: |
| return iwm_mlme_connection_terminated(iwm, buf, buf_size, cmd); |
| case WIFI_IF_NTFY_SCAN_COMPLETE: |
| return iwm_mlme_scan_complete(iwm, buf, buf_size, cmd); |
| case WIFI_IF_NTFY_STA_TABLE_CHANGE: |
| return iwm_mlme_update_sta_table(iwm, buf, buf_size, cmd); |
| case WIFI_IF_NTFY_EXTENDED_IE_REQUIRED: |
| IWM_DBG_MLME(iwm, DBG, "Extended IE required\n"); |
| break; |
| case WIFI_IF_NTFY_RADIO_PREEMPTION: |
| return iwm_mlme_medium_lost(iwm, buf, buf_size, cmd); |
| case WIFI_IF_NTFY_BSS_TRK_TABLE_CHANGED: |
| return iwm_mlme_update_bss_table(iwm, buf, buf_size, cmd); |
| case WIFI_IF_NTFY_BSS_TRK_ENTRIES_REMOVED: |
| return iwm_mlme_remove_bss(iwm, buf, buf_size, cmd); |
| break; |
| case WIFI_IF_NTFY_MGMT_FRAME: |
| return iwm_mlme_mgt_frame(iwm, buf, buf_size, cmd); |
| case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_START: |
| case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_COMPLETE: |
| case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_START: |
| case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_RESULT: |
| case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_START: |
| case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_COMPLETE: |
| case WIFI_DBG_IF_NTFY_CNCT_ATC_START: |
| case WIFI_DBG_IF_NTFY_COEX_NOTIFICATION: |
| case WIFI_DBG_IF_NTFY_COEX_HANDLE_ENVELOP: |
| case WIFI_DBG_IF_NTFY_COEX_HANDLE_RELEASE_ENVELOP: |
| IWM_DBG_MLME(iwm, DBG, "MLME debug notification: 0x%x\n", |
| notif->status); |
| break; |
| default: |
| IWM_ERR(iwm, "Unhandled notification: 0x%x\n", notif->status); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| #define IWM_STATS_UPDATE_INTERVAL (2 * HZ) |
| |
| static int iwm_ntf_statistics(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_notif_stats *stats = (struct iwm_umac_notif_stats *)buf; |
| struct iw_statistics *wstats = &iwm->wstats; |
| u16 max_rate = 0; |
| int i; |
| |
| IWM_DBG_MLME(iwm, DBG, "Statistics notification received\n"); |
| |
| if (test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) { |
| for (i = 0; i < UMAC_NTF_RATE_SAMPLE_NR; i++) { |
| max_rate = max_t(u16, max_rate, |
| max(le16_to_cpu(stats->tx_rate[i]), |
| le16_to_cpu(stats->rx_rate[i]))); |
| } |
| /* UMAC passes rate info multiplies by 2 */ |
| iwm->rate = max_rate >> 1; |
| } |
| iwm->txpower = le32_to_cpu(stats->tx_power); |
| |
| wstats->status = 0; |
| |
| wstats->discard.nwid = le32_to_cpu(stats->rx_drop_other_bssid); |
| wstats->discard.code = le32_to_cpu(stats->rx_drop_decode); |
| wstats->discard.fragment = le32_to_cpu(stats->rx_drop_reassembly); |
| wstats->discard.retries = le32_to_cpu(stats->tx_drop_max_retry); |
| |
| wstats->miss.beacon = le32_to_cpu(stats->missed_beacons); |
| |
| /* according to cfg80211 */ |
| if (stats->rssi_dbm < -110) |
| wstats->qual.qual = 0; |
| else if (stats->rssi_dbm > -40) |
| wstats->qual.qual = 70; |
| else |
| wstats->qual.qual = stats->rssi_dbm + 110; |
| |
| wstats->qual.level = stats->rssi_dbm; |
| wstats->qual.noise = stats->noise_dbm; |
| wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM; |
| |
| schedule_delayed_work(&iwm->stats_request, IWM_STATS_UPDATE_INTERVAL); |
| |
| mod_timer(&iwm->watchdog, round_jiffies(jiffies + IWM_WATCHDOG_PERIOD)); |
| |
| return 0; |
| } |
| |
| static int iwm_ntf_eeprom_proxy(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_cmd_eeprom_proxy *eeprom_proxy = |
| (struct iwm_umac_cmd_eeprom_proxy *) |
| (buf + sizeof(struct iwm_umac_wifi_in_hdr)); |
| struct iwm_umac_cmd_eeprom_proxy_hdr *hdr = &eeprom_proxy->hdr; |
| u32 hdr_offset = le32_to_cpu(hdr->offset); |
| u32 hdr_len = le32_to_cpu(hdr->len); |
| u32 hdr_type = le32_to_cpu(hdr->type); |
| |
| IWM_DBG_NTF(iwm, DBG, "type: 0x%x, len: %d, offset: 0x%x\n", |
| hdr_type, hdr_len, hdr_offset); |
| |
| if ((hdr_offset + hdr_len) > IWM_EEPROM_LEN) |
| return -EINVAL; |
| |
| switch (hdr_type) { |
| case IWM_UMAC_CMD_EEPROM_TYPE_READ: |
| memcpy(iwm->eeprom + hdr_offset, eeprom_proxy->buf, hdr_len); |
| break; |
| case IWM_UMAC_CMD_EEPROM_TYPE_WRITE: |
| default: |
| return -ENOTSUPP; |
| } |
| |
| return 0; |
| } |
| |
| static int iwm_ntf_channel_info_list(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_cmd_get_channel_list *ch_list = |
| (struct iwm_umac_cmd_get_channel_list *) |
| (buf + sizeof(struct iwm_umac_wifi_in_hdr)); |
| struct wiphy *wiphy = iwm_to_wiphy(iwm); |
| struct ieee80211_supported_band *band; |
| int i; |
| |
| band = wiphy->bands[IEEE80211_BAND_2GHZ]; |
| |
| for (i = 0; i < band->n_channels; i++) { |
| unsigned long ch_mask_0 = |
| le32_to_cpu(ch_list->ch[0].channels_mask); |
| unsigned long ch_mask_2 = |
| le32_to_cpu(ch_list->ch[2].channels_mask); |
| |
| if (!test_bit(i, &ch_mask_0)) |
| band->channels[i].flags |= IEEE80211_CHAN_DISABLED; |
| |
| if (!test_bit(i, &ch_mask_2)) |
| band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS; |
| } |
| |
| band = wiphy->bands[IEEE80211_BAND_5GHZ]; |
| |
| for (i = 0; i < min(band->n_channels, 32); i++) { |
| unsigned long ch_mask_1 = |
| le32_to_cpu(ch_list->ch[1].channels_mask); |
| unsigned long ch_mask_3 = |
| le32_to_cpu(ch_list->ch[3].channels_mask); |
| |
| if (!test_bit(i, &ch_mask_1)) |
| band->channels[i].flags |= IEEE80211_CHAN_DISABLED; |
| |
| if (!test_bit(i, &ch_mask_3)) |
| band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS; |
| } |
| |
| return 0; |
| } |
| |
| static int iwm_ntf_stop_resume_tx(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_notif_stop_resume_tx *stp_res_tx = |
| (struct iwm_umac_notif_stop_resume_tx *)buf; |
| struct iwm_sta_info *sta_info; |
| struct iwm_tid_info *tid_info; |
| u8 sta_id = STA_ID_N_COLOR_ID(stp_res_tx->sta_id); |
| u16 tid_msk = le16_to_cpu(stp_res_tx->stop_resume_tid_msk); |
| int bit, ret = 0; |
| bool stop = false; |
| |
| IWM_DBG_NTF(iwm, DBG, "stop/resume notification:\n" |
| "\tflags: 0x%x\n" |
| "\tSTA id: %d\n" |
| "\tTID bitmask: 0x%x\n", |
| stp_res_tx->flags, stp_res_tx->sta_id, |
| stp_res_tx->stop_resume_tid_msk); |
| |
| if (stp_res_tx->flags & UMAC_STOP_TX_FLAG) |
| stop = true; |
| |
| sta_info = &iwm->sta_table[sta_id]; |
| if (!sta_info->valid) { |
| IWM_ERR(iwm, "Stoping an invalid STA: %d %d\n", |
| sta_id, stp_res_tx->sta_id); |
| return -EINVAL; |
| } |
| |
| for_each_bit(bit, (unsigned long *)&tid_msk, IWM_UMAC_TID_NR) { |
| tid_info = &sta_info->tid_info[bit]; |
| |
| mutex_lock(&tid_info->mutex); |
| tid_info->stopped = stop; |
| mutex_unlock(&tid_info->mutex); |
| |
| if (!stop) { |
| struct iwm_tx_queue *txq; |
| int queue = iwm_tid_to_queue(bit); |
| |
| if (queue < 0) |
| continue; |
| |
| txq = &iwm->txq[queue]; |
| /* |
| * If we resume, we have to move our SKBs |
| * back to the tx queue and queue some work. |
| */ |
| spin_lock_bh(&txq->lock); |
| skb_queue_splice_init(&txq->queue, &txq->stopped_queue); |
| spin_unlock_bh(&txq->lock); |
| |
| queue_work(txq->wq, &txq->worker); |
| } |
| |
| } |
| |
| /* We send an ACK only for the stop case */ |
| if (stop) |
| ret = iwm_send_umac_stop_resume_tx(iwm, stp_res_tx); |
| |
| return ret; |
| } |
| |
| static int iwm_ntf_wifi_if_wrapper(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| struct iwm_umac_wifi_if *hdr; |
| |
| if (cmd == NULL) { |
| IWM_ERR(iwm, "Couldn't find expected wifi command\n"); |
| return -EINVAL; |
| } |
| |
| hdr = (struct iwm_umac_wifi_if *)cmd->buf.payload; |
| |
| IWM_DBG_NTF(iwm, DBG, "WIFI_IF_WRAPPER cmd is delivered to UMAC: " |
| "oid is 0x%x\n", hdr->oid); |
| |
| if (hdr->oid <= WIFI_IF_NTFY_MAX) { |
| set_bit(hdr->oid, &iwm->wifi_ntfy[0]); |
| wake_up_interruptible(&iwm->wifi_ntfy_queue); |
| } else |
| return -EINVAL; |
| |
| switch (hdr->oid) { |
| case UMAC_WIFI_IF_CMD_SET_PROFILE: |
| iwm->umac_profile_active = 1; |
| break; |
| default: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| #define CT_KILL_DELAY (30 * HZ) |
| static int iwm_ntf_card_state(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size, struct iwm_wifi_cmd *cmd) |
| { |
| struct wiphy *wiphy = iwm_to_wiphy(iwm); |
| struct iwm_lmac_card_state *state = (struct iwm_lmac_card_state *) |
| (buf + sizeof(struct iwm_umac_wifi_in_hdr)); |
| u32 flags = le32_to_cpu(state->flags); |
| |
| IWM_INFO(iwm, "HW RF Kill %s, CT Kill %s\n", |
| flags & IWM_CARD_STATE_HW_DISABLED ? "ON" : "OFF", |
| flags & IWM_CARD_STATE_CTKILL_DISABLED ? "ON" : "OFF"); |
| |
| if (flags & IWM_CARD_STATE_CTKILL_DISABLED) { |
| /* |
| * We got a CTKILL event: We bring the interface down in |
| * oder to cool the device down, and try to bring it up |
| * 30 seconds later. If it's still too hot, we'll go through |
| * this code path again. |
| */ |
| cancel_delayed_work_sync(&iwm->ct_kill_delay); |
| schedule_delayed_work(&iwm->ct_kill_delay, CT_KILL_DELAY); |
| } |
| |
| wiphy_rfkill_set_hw_state(wiphy, flags & |
| (IWM_CARD_STATE_HW_DISABLED | |
| IWM_CARD_STATE_CTKILL_DISABLED)); |
| |
| return 0; |
| } |
| |
| static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size) |
| { |
| struct iwm_umac_wifi_in_hdr *wifi_hdr; |
| struct iwm_wifi_cmd *cmd; |
| u8 source, cmd_id; |
| u16 seq_num; |
| u32 count; |
| |
| wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf; |
| cmd_id = wifi_hdr->sw_hdr.cmd.cmd; |
| source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE); |
| if (source >= IWM_SRC_NUM) { |
| IWM_CRIT(iwm, "invalid source %d\n", source); |
| return -EINVAL; |
| } |
| |
| if (cmd_id == REPLY_RX_MPDU_CMD) |
| trace_iwm_rx_packet(iwm, buf, buf_size); |
| else if ((cmd_id == UMAC_NOTIFY_OPCODE_RX_TICKET) && |
| (source == UMAC_HDI_IN_SOURCE_FW)) |
| trace_iwm_rx_ticket(iwm, buf, buf_size); |
| else |
| trace_iwm_rx_wifi_cmd(iwm, wifi_hdr); |
| |
| count = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT); |
| count += sizeof(struct iwm_umac_wifi_in_hdr) - |
| sizeof(struct iwm_dev_cmd_hdr); |
| if (count > buf_size) { |
| IWM_CRIT(iwm, "count %d, buf size:%ld\n", count, buf_size); |
| return -EINVAL; |
| } |
| |
| seq_num = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num); |
| |
| IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x, seqnum: %d\n", |
| cmd_id, source, seq_num); |
| |
| /* |
| * If this is a response to a previously sent command, there must |
| * be a pending command for this sequence number. |
| */ |
| cmd = iwm_get_pending_wifi_cmd(iwm, seq_num); |
| |
| /* Notify the caller only for sync commands. */ |
| switch (source) { |
| case UMAC_HDI_IN_SOURCE_FHRX: |
| if (iwm->lmac_handlers[cmd_id] && |
| test_bit(cmd_id, &iwm->lmac_handler_map[0])) |
| return iwm_notif_send(iwm, cmd, cmd_id, source, |
| buf, count); |
| break; |
| case UMAC_HDI_IN_SOURCE_FW: |
| if (iwm->umac_handlers[cmd_id] && |
| test_bit(cmd_id, &iwm->umac_handler_map[0])) |
| return iwm_notif_send(iwm, cmd, cmd_id, source, |
| buf, count); |
| break; |
| case UMAC_HDI_IN_SOURCE_UDMA: |
| break; |
| } |
| |
| return iwm_rx_handle_resp(iwm, buf, count, cmd); |
| } |
| |
| int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size, |
| struct iwm_wifi_cmd *cmd) |
| { |
| u8 source, cmd_id; |
| struct iwm_umac_wifi_in_hdr *wifi_hdr; |
| int ret = 0; |
| |
| wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf; |
| cmd_id = wifi_hdr->sw_hdr.cmd.cmd; |
| |
| source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE); |
| |
| IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x\n", cmd_id, source); |
| |
| switch (source) { |
| case UMAC_HDI_IN_SOURCE_FHRX: |
| if (iwm->lmac_handlers[cmd_id]) |
| ret = iwm->lmac_handlers[cmd_id] |
| (iwm, buf, buf_size, cmd); |
| break; |
| case UMAC_HDI_IN_SOURCE_FW: |
| if (iwm->umac_handlers[cmd_id]) |
| ret = iwm->umac_handlers[cmd_id] |
| (iwm, buf, buf_size, cmd); |
| break; |
| case UMAC_HDI_IN_SOURCE_UDMA: |
| ret = -EINVAL; |
| break; |
| } |
| |
| kfree(cmd); |
| |
| return ret; |
| } |
| |
| static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size) |
| { |
| u8 seq_num; |
| struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf; |
| struct iwm_nonwifi_cmd *cmd; |
| |
| trace_iwm_rx_nonwifi_cmd(iwm, buf, buf_size); |
| seq_num = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM); |
| |
| /* |
| * We received a non wifi answer. |
| * Let's check if there's a pending command for it, and if so |
| * replace the command payload with the buffer, and then wake the |
| * callers up. |
| * That means we only support synchronised non wifi command response |
| * schemes. |
| */ |
| list_for_each_entry(cmd, &iwm->nonwifi_pending_cmd, pending) |
| if (cmd->seq_num == seq_num) { |
| cmd->resp_received = 1; |
| cmd->buf.len = buf_size; |
| memcpy(cmd->buf.hdr, buf, buf_size); |
| wake_up_interruptible(&iwm->nonwifi_queue); |
| } |
| |
| return 0; |
| } |
| |
| static int iwm_rx_handle_umac(struct iwm_priv *iwm, u8 *buf, |
| unsigned long buf_size) |
| { |
| int ret = 0; |
| u8 op_code; |
| unsigned long buf_offset = 0; |
| struct iwm_udma_in_hdr *hdr; |
| |
| /* |
| * To allow for a more efficient bus usage, UMAC |
| * messages are encapsulated into UDMA ones. This |
| * way we can have several UMAC messages in one bus |
| * transfer. |
| * A UDMA frame size is always aligned on 16 bytes, |
| * and a UDMA frame must not start with a UMAC_PAD_TERMINAL |
| * word. This is how we parse a bus frame into several |
| * UDMA ones. |
| */ |
| while (buf_offset < buf_size) { |
| |
| hdr = (struct iwm_udma_in_hdr *)(buf + buf_offset); |
| |
| if (iwm_rx_check_udma_hdr(hdr) < 0) { |
| IWM_DBG_RX(iwm, DBG, "End of frame\n"); |
| break; |
| } |
| |
| op_code = GET_VAL32(hdr->cmd, UMAC_HDI_IN_CMD_OPCODE); |
| |
| IWM_DBG_RX(iwm, DBG, "Op code: 0x%x\n", op_code); |
| |
| if (op_code == UMAC_HDI_IN_OPCODE_WIFI) { |
| ret |= iwm_rx_handle_wifi(iwm, buf + buf_offset, |
| buf_size - buf_offset); |
| } else if (op_code < UMAC_HDI_IN_OPCODE_NONWIFI_MAX) { |
| if (GET_VAL32(hdr->cmd, |
| UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) != |
| UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) { |
| IWM_ERR(iwm, "Incorrect hw signature\n"); |
| return -EINVAL; |
| } |
| ret |= iwm_rx_handle_nonwifi(iwm, buf + buf_offset, |
| buf_size - buf_offset); |
| } else { |
| IWM_ERR(iwm, "Invalid RX opcode: 0x%x\n", op_code); |
| ret |= -EINVAL; |
| } |
| |
| buf_offset += iwm_rx_resp_size(hdr); |
| } |
| |
| return ret; |
| } |
| |
| int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size) |
| { |
| struct iwm_udma_in_hdr *hdr; |
| |
| hdr = (struct iwm_udma_in_hdr *)buf; |
| |
| switch (le32_to_cpu(hdr->cmd)) { |
| case UMAC_REBOOT_BARKER: |
| if (test_bit(IWM_STATUS_READY, &iwm->status)) { |
| IWM_ERR(iwm, "Unexpected BARKER\n"); |
| |
| schedule_work(&iwm->reset_worker); |
| |
| return 0; |
| } |
| |
| return iwm_notif_send(iwm, NULL, IWM_BARKER_REBOOT_NOTIFICATION, |
| IWM_SRC_UDMA, buf, buf_size); |
| case UMAC_ACK_BARKER: |
| return iwm_notif_send(iwm, NULL, IWM_ACK_BARKER_NOTIFICATION, |
| IWM_SRC_UDMA, NULL, 0); |
| default: |
| IWM_DBG_RX(iwm, DBG, "Received cmd: 0x%x\n", hdr->cmd); |
| return iwm_rx_handle_umac(iwm, buf, buf_size); |
| } |
| |
| return 0; |
| } |
| |
| static const iwm_handler iwm_umac_handlers[] = |
| { |
| [UMAC_NOTIFY_OPCODE_ERROR] = iwm_ntf_error, |
| [UMAC_NOTIFY_OPCODE_ALIVE] = iwm_ntf_umac_alive, |
| [UMAC_NOTIFY_OPCODE_INIT_COMPLETE] = iwm_ntf_init_complete, |
| [UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS] = iwm_ntf_wifi_status, |
| [UMAC_NOTIFY_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_mlme, |
| [UMAC_NOTIFY_OPCODE_PAGE_DEALLOC] = iwm_ntf_tx_credit_update, |
| [UMAC_NOTIFY_OPCODE_RX_TICKET] = iwm_ntf_rx_ticket, |
| [UMAC_CMD_OPCODE_RESET] = iwm_ntf_umac_reset, |
| [UMAC_NOTIFY_OPCODE_STATS] = iwm_ntf_statistics, |
| [UMAC_CMD_OPCODE_EEPROM_PROXY] = iwm_ntf_eeprom_proxy, |
| [UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST] = iwm_ntf_channel_info_list, |
| [UMAC_CMD_OPCODE_STOP_RESUME_STA_TX] = iwm_ntf_stop_resume_tx, |
| [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet, |
| [UMAC_CMD_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_wifi_if_wrapper, |
| }; |
| |
| static const iwm_handler iwm_lmac_handlers[] = |
| { |
| [REPLY_TX] = iwm_ntf_tx, |
| [REPLY_ALIVE] = iwm_ntf_lmac_version, |
| [CALIBRATION_RES_NOTIFICATION] = iwm_ntf_calib_res, |
| [CALIBRATION_COMPLETE_NOTIFICATION] = iwm_ntf_calib_complete, |
| [CALIBRATION_CFG_CMD] = iwm_ntf_calib_cfg, |
| [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet, |
| [CARD_STATE_NOTIFICATION] = iwm_ntf_card_state, |
| }; |
| |
| void iwm_rx_setup_handlers(struct iwm_priv *iwm) |
| { |
| iwm->umac_handlers = (iwm_handler *) iwm_umac_handlers; |
| iwm->lmac_handlers = (iwm_handler *) iwm_lmac_handlers; |
| } |
| |
| static void iwm_remove_iv(struct sk_buff *skb, u32 hdr_total_len) |
| { |
| struct ieee80211_hdr *hdr; |
| unsigned int hdr_len; |
| |
| hdr = (struct ieee80211_hdr *)skb->data; |
| |
| if (!ieee80211_has_protected(hdr->frame_control)) |
| return; |
| |
| hdr_len = ieee80211_hdrlen(hdr->frame_control); |
| if (hdr_total_len <= hdr_len) |
| return; |
| |
| memmove(skb->data + (hdr_total_len - hdr_len), skb->data, hdr_len); |
| skb_pull(skb, (hdr_total_len - hdr_len)); |
| } |
| |
| static void iwm_rx_adjust_packet(struct iwm_priv *iwm, |
| struct iwm_rx_packet *packet, |
| struct iwm_rx_ticket_node *ticket_node) |
| { |
| u32 payload_offset = 0, payload_len; |
| struct iwm_rx_ticket *ticket = ticket_node->ticket; |
| struct iwm_rx_mpdu_hdr *mpdu_hdr; |
| struct ieee80211_hdr *hdr; |
| |
| mpdu_hdr = (struct iwm_rx_mpdu_hdr *)packet->skb->data; |
| payload_offset += sizeof(struct iwm_rx_mpdu_hdr); |
| /* Padding is 0 or 2 bytes */ |
| payload_len = le16_to_cpu(mpdu_hdr->len) + |
| (le16_to_cpu(ticket->flags) & IWM_RX_TICKET_PAD_SIZE_MSK); |
| payload_len -= ticket->tail_len; |
| |
| IWM_DBG_RX(iwm, DBG, "Packet adjusted, len:%d, offset:%d, " |
| "ticket offset:%d ticket tail len:%d\n", |
| payload_len, payload_offset, ticket->payload_offset, |
| ticket->tail_len); |
| |
| IWM_HEXDUMP(iwm, DBG, RX, "RAW: ", packet->skb->data, packet->skb->len); |
| |
| skb_pull(packet->skb, payload_offset); |
| skb_trim(packet->skb, payload_len); |
| |
| iwm_remove_iv(packet->skb, ticket->payload_offset); |
| |
| hdr = (struct ieee80211_hdr *) packet->skb->data; |
| if (ieee80211_is_data_qos(hdr->frame_control)) { |
| /* UMAC handed QOS_DATA frame with 2 padding bytes appended |
| * to the qos_ctl field in IEEE 802.11 headers. */ |
| memmove(packet->skb->data + IEEE80211_QOS_CTL_LEN + 2, |
| packet->skb->data, |
| ieee80211_hdrlen(hdr->frame_control) - |
| IEEE80211_QOS_CTL_LEN); |
| hdr = (struct ieee80211_hdr *) skb_pull(packet->skb, |
| IEEE80211_QOS_CTL_LEN + 2); |
| hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA); |
| } |
| |
| IWM_HEXDUMP(iwm, DBG, RX, "ADJUSTED: ", |
| packet->skb->data, packet->skb->len); |
| } |
| |
| static void classify8023(struct sk_buff *skb) |
| { |
| struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
| |
| if (ieee80211_is_data_qos(hdr->frame_control)) { |
| u8 *qc = ieee80211_get_qos_ctl(hdr); |
| /* frame has qos control */ |
| skb->priority = *qc & IEEE80211_QOS_CTL_TID_MASK; |
| } else { |
| skb->priority = 0; |
| } |
| } |
| |
| static void iwm_rx_process_amsdu(struct iwm_priv *iwm, struct sk_buff *skb) |
| { |
| struct wireless_dev *wdev = iwm_to_wdev(iwm); |
| struct net_device *ndev = iwm_to_ndev(iwm); |
| struct sk_buff_head list; |
| struct sk_buff *frame; |
| |
| IWM_HEXDUMP(iwm, DBG, RX, "A-MSDU: ", skb->data, skb->len); |
| |
| __skb_queue_head_init(&list); |
| ieee80211_amsdu_to_8023s(skb, &list, ndev->dev_addr, wdev->iftype, 0); |
| |
| while ((frame = __skb_dequeue(&list))) { |
| ndev->stats.rx_packets++; |
| ndev->stats.rx_bytes += frame->len; |
| |
| frame->protocol = eth_type_trans(frame, ndev); |
| frame->ip_summed = CHECKSUM_NONE; |
| memset(frame->cb, 0, sizeof(frame->cb)); |
| |
| if (netif_rx_ni(frame) == NET_RX_DROP) { |
| IWM_ERR(iwm, "Packet dropped\n"); |
| ndev->stats.rx_dropped++; |
| } |
| } |
| } |
| |
| static void iwm_rx_process_packet(struct iwm_priv *iwm, |
| struct iwm_rx_packet *packet, |
| struct iwm_rx_ticket_node *ticket_node) |
| { |
| int ret; |
| struct sk_buff *skb = packet->skb; |
| struct wireless_dev *wdev = iwm_to_wdev(iwm); |
| struct net_device *ndev = iwm_to_ndev(iwm); |
| |
| IWM_DBG_RX(iwm, DBG, "Processing packet ID %d\n", packet->id); |
| |
| switch (le16_to_cpu(ticket_node->ticket->action)) { |
| case IWM_RX_TICKET_RELEASE: |
| IWM_DBG_RX(iwm, DBG, "RELEASE packet\n"); |
| |
| iwm_rx_adjust_packet(iwm, packet, ticket_node); |
| skb->dev = iwm_to_ndev(iwm); |
| classify8023(skb); |
| |
| if (le16_to_cpu(ticket_node->ticket->flags) & |
| IWM_RX_TICKET_AMSDU_MSK) { |
| iwm_rx_process_amsdu(iwm, skb); |
| break; |
| } |
| |
| ret = ieee80211_data_to_8023(skb, ndev->dev_addr, wdev->iftype); |
| if (ret < 0) { |
| IWM_DBG_RX(iwm, DBG, "Couldn't convert 802.11 header - " |
| "%d\n", ret); |
| kfree_skb(packet->skb); |
| break; |
| } |
| |
| IWM_HEXDUMP(iwm, DBG, RX, "802.3: ", skb->data, skb->len); |
| |
| ndev->stats.rx_packets++; |
| ndev->stats.rx_bytes += skb->len; |
| |
| skb->protocol = eth_type_trans(skb, ndev); |
| skb->ip_summed = CHECKSUM_NONE; |
| memset(skb->cb, 0, sizeof(skb->cb)); |
| |
| if (netif_rx_ni(skb) == NET_RX_DROP) { |
| IWM_ERR(iwm, "Packet dropped\n"); |
| ndev->stats.rx_dropped++; |
| } |
| break; |
| case IWM_RX_TICKET_DROP: |
| IWM_DBG_RX(iwm, DBG, "DROP packet: 0x%x\n", |
| le16_to_cpu(ticket_node->ticket->flags)); |
| kfree_skb(packet->skb); |
| break; |
| default: |
| IWM_ERR(iwm, "Unknown ticket action: %d\n", |
| le16_to_cpu(ticket_node->ticket->action)); |
| kfree_skb(packet->skb); |
| } |
| |
| kfree(packet); |
| iwm_rx_ticket_node_free(ticket_node); |
| } |
| |
| /* |
| * Rx data processing: |
| * |
| * We're receiving Rx packet from the LMAC, and Rx ticket from |
| * the UMAC. |
| * To forward a target data packet upstream (i.e. to the |
| * kernel network stack), we must have received an Rx ticket |
| * that tells us we're allowed to release this packet (ticket |
| * action is IWM_RX_TICKET_RELEASE). The Rx ticket also indicates, |
| * among other things, where valid data actually starts in the Rx |
| * packet. |
| */ |
| void iwm_rx_worker(struct work_struct *work) |
| { |
| struct iwm_priv *iwm; |
| struct iwm_rx_ticket_node *ticket, *next; |
| |
| iwm = container_of(work, struct iwm_priv, rx_worker); |
| |
| /* |
| * We go through the tickets list and if there is a pending |
| * packet for it, we push it upstream. |
| * We stop whenever a ticket is missing its packet, as we're |
| * supposed to send the packets in order. |
| */ |
| list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) { |
| struct iwm_rx_packet *packet = |
| iwm_rx_packet_get(iwm, le16_to_cpu(ticket->ticket->id)); |
| |
| if (!packet) { |
| IWM_DBG_RX(iwm, DBG, "Skip rx_work: Wait for ticket %d " |
| "to be handled first\n", |
| le16_to_cpu(ticket->ticket->id)); |
| return; |
| } |
| |
| list_del(&ticket->node); |
| list_del(&packet->node); |
| iwm_rx_process_packet(iwm, packet, ticket); |
| } |
| } |
| |