diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c index e136475a34f6..80b0b2ed69bb 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c @@ -1188,6 +1188,108 @@ static ssize_t iwl_dbgfs_inject_packet_write(struct iwl_mvm *mvm, return ret ?: count; } +static int _iwl_dbgfs_inject_beacon_ie(struct iwl_mvm *mvm, char *bin, int len) +{ + struct ieee80211_vif *vif; + struct iwl_mvm_vif *mvmvif; + struct sk_buff *beacon; + struct ieee80211_tx_info *info; + struct iwl_mac_beacon_cmd beacon_cmd = {}; + u8 rate; + u16 flags; + int i; + + len /= 2; + + /* Element len should be represented by u8 */ + if (len >= U8_MAX) + return -EINVAL; + + if (!iwl_mvm_firmware_running(mvm)) + return -EIO; + + if (!iwl_mvm_has_new_tx_api(mvm) && + !fw_has_api(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE)) + return -EINVAL; + + rcu_read_lock(); + + for (i = 0; i < NUM_MAC_INDEX_DRIVER; i++) { + vif = iwl_mvm_rcu_dereference_vif_id(mvm, i, true); + if (!vif) + continue; + + if (vif->type == NL80211_IFTYPE_AP) + break; + } + + if (i == NUM_MAC_INDEX_DRIVER || !vif) + goto out_err; + + mvm->hw->extra_beacon_tailroom = len; + + beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL); + if (!beacon) + goto out_err; + + if (len && hex2bin(skb_put_zero(beacon, len), bin, len)) { + dev_kfree_skb(beacon); + goto out_err; + } + + mvmvif = iwl_mvm_vif_from_mac80211(vif); + info = IEEE80211_SKB_CB(beacon); + rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif); + flags = iwl_mvm_mac80211_idx_to_hwrate(rate); + + if (rate == IWL_FIRST_CCK_RATE) + flags |= IWL_MAC_BEACON_CCK; + + beacon_cmd.flags = cpu_to_le16(flags); + beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len); + beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); + + iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, + &beacon_cmd.tim_size, + beacon->data, beacon->len); + + mutex_lock(&mvm->mutex); + iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, + sizeof(beacon_cmd)); + mutex_unlock(&mvm->mutex); + + dev_kfree_skb(beacon); + + rcu_read_unlock(); + return 0; + +out_err: + rcu_read_unlock(); + return -EINVAL; +} + +static ssize_t iwl_dbgfs_inject_beacon_ie_write(struct iwl_mvm *mvm, + char *buf, size_t count, + loff_t *ppos) +{ + int ret = _iwl_dbgfs_inject_beacon_ie(mvm, buf, count); + + mvm->hw->extra_beacon_tailroom = 0; + return ret ?: count; +} + +static ssize_t iwl_dbgfs_inject_beacon_ie_restore_write(struct iwl_mvm *mvm, + char *buf, + size_t count, + loff_t *ppos) +{ + int ret = _iwl_dbgfs_inject_beacon_ie(mvm, NULL, 0); + + mvm->hw->extra_beacon_tailroom = 0; + return ret ?: count; +} + static ssize_t iwl_dbgfs_fw_dbg_conf_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) @@ -1806,6 +1908,8 @@ MVM_DEBUGFS_WRITE_FILE_OPS(max_amsdu_len, 8); MVM_DEBUGFS_WRITE_FILE_OPS(indirection_tbl, (IWL_RSS_INDIRECTION_TABLE_SIZE * 2)); MVM_DEBUGFS_WRITE_FILE_OPS(inject_packet, 512); +MVM_DEBUGFS_WRITE_FILE_OPS(inject_beacon_ie, 512); +MVM_DEBUGFS_WRITE_FILE_OPS(inject_beacon_ie_restore, 512); MVM_DEBUGFS_READ_FILE_OPS(uapsd_noagg_bssids); @@ -2007,6 +2111,8 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir) MVM_DEBUGFS_ADD_FILE(send_echo_cmd, mvm->debugfs_dir, 0200); MVM_DEBUGFS_ADD_FILE(indirection_tbl, mvm->debugfs_dir, 0200); MVM_DEBUGFS_ADD_FILE(inject_packet, mvm->debugfs_dir, 0200); + MVM_DEBUGFS_ADD_FILE(inject_beacon_ie, mvm->debugfs_dir, 0200); + MVM_DEBUGFS_ADD_FILE(inject_beacon_ie_restore, mvm->debugfs_dir, 0200); #ifdef CONFIG_ACPI MVM_DEBUGFS_ADD_FILE(sar_geo_profile, dbgfs_dir, 0400); #endif diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c index 83711b555036..9bd4376cad9b 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c @@ -811,9 +811,9 @@ static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); } -static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, - __le32 *tim_index, __le32 *tim_size, - u8 *beacon, u32 frame_size) +void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, + __le32 *tim_index, __le32 *tim_size, + u8 *beacon, u32 frame_size) { u32 tim_idx; struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; @@ -853,8 +853,8 @@ static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size) return ie - beacon; } -static u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct ieee80211_tx_info *info, - struct ieee80211_vif *vif) +u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct ieee80211_tx_info *info, + struct ieee80211_vif *vif) { u8 rate; @@ -904,9 +904,9 @@ static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm, } -static int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm, - struct sk_buff *beacon, - void *data, int len) +int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm, + struct sk_buff *beacon, + void *data, int len) { struct iwl_host_cmd cmd = { .id = BEACON_TEMPLATE_CMD, @@ -1009,9 +1009,9 @@ static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm, sizeof(beacon_cmd)); } -static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, - struct ieee80211_vif *vif, - struct sk_buff *beacon) +int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, + struct ieee80211_vif *vif, + struct sk_buff *beacon) { if (WARN_ON(!beacon)) return -EINVAL; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h index c70fc90680af..f4fc81695df1 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h @@ -1693,6 +1693,17 @@ int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif, int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif); int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif); +int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, + struct ieee80211_vif *vif, + struct sk_buff *beacon); +int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm, + struct sk_buff *beacon, + void *data, int len); +u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct ieee80211_tx_info *info, + struct ieee80211_vif *vif); +void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, + __le32 *tim_index, __le32 *tim_size, + u8 *beacon, u32 frame_size); void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,