diff options
Diffstat (limited to 'drivers/net/wireless/iwmc3200wifi/rx.c')
| -rw-r--r-- | drivers/net/wireless/iwmc3200wifi/rx.c | 1701 |
1 files changed, 0 insertions, 1701 deletions
diff --git a/drivers/net/wireless/iwmc3200wifi/rx.c b/drivers/net/wireless/iwmc3200wifi/rx.c deleted file mode 100644 index 7d708f4..0000000 --- a/drivers/net/wireless/iwmc3200wifi/rx.c +++ /dev/null @@ -1,1701 +0,0 @@ -/* - * 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 <linux/slab.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 = kmemdup(ticket, 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); - } - - 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; - - spin_lock(&iwm->packet_lock[id_hash]); - list_for_each_entry(packet, &iwm->rx_packets[id_hash], node) - if (packet->id == id) { - list_del(&packet->node); - spin_unlock(&iwm->packet_lock[id_hash]); - return packet; - } - - spin_unlock(&iwm->packet_lock[id_hash]); - 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; - - spin_lock(&iwm->ticket_lock); - list_for_each_entry_safe(ticket, nt, &iwm->rx_tickets, node) { - list_del(&ticket->node); - iwm_rx_ticket_node_free(ticket); - } - spin_unlock(&iwm->ticket_lock); - - for (i = 0; i < IWM_RX_ID_HASH; i++) { - spin_lock(&iwm->packet_lock[i]); - list_for_each_entry_safe(packet, np, &iwm->rx_packets[i], - node) { - list_del(&packet->node); - kfree_skb(packet->skb); - kfree(packet); - } - spin_unlock(&iwm->packet_lock[i]); - } -} - -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", - __le16_to_cpu(ticket->action) == - IWM_RX_TICKET_RELEASE ? - "RELEASE" : "DROP", - ticket->id); - spin_lock(&iwm->ticket_lock); - list_add_tail(&ticket_node->node, &iwm->rx_tickets); - spin_unlock(&iwm->ticket_lock); - - /* - * 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; - u8 id_hash; - - 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); - - id_hash = IWM_RX_ID_GET_HASH(id); - spin_lock(&iwm->packet_lock[id_hash]); - list_add_tail(&packet->node, &iwm->rx_packets[id_hash]); - spin_unlock(&iwm->packet_lock[id_hash]); - - /* 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, - complete->band == UMAC_BAND_2GHZ ? - IEEE80211_BAND_2GHZ : - IEEE80211_BAND_5GHZ)); - 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), NULL, - 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), NULL, - 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 = false; - 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 = true; - 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 = false; - - break; - case UMAC_OPCODE_CLEAR_ALL: - for (i = 0; i < IWM_STA_TABLE_NUM; i++) - iwm->sta_table[i].valid = false; - - 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, band->band); - 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_set_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); - - set_bit(hdr->oid, &iwm->wifi_ntfy[0]); - wake_up_interruptible(&iwm->wifi_ntfy_queue); - - switch (hdr->oid) { - case UMAC_WIFI_IF_CMD_SET_PROFILE: - iwm->umac_profile_active = true; - 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 = true; - 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, - true); - - 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. - */ - spin_lock(&iwm->ticket_lock); - 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)); - break; - } - - list_del(&ticket->node); - iwm_rx_process_packet(iwm, packet, ticket); - } - spin_unlock(&iwm->ticket_lock); -} - |
