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path: root/drivers/net/wireless/iwmc3200wifi/rx.c
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Diffstat (limited to 'drivers/net/wireless/iwmc3200wifi/rx.c')
-rw-r--r--drivers/net/wireless/iwmc3200wifi/rx.c76
1 files changed, 54 insertions, 22 deletions
diff --git a/drivers/net/wireless/iwmc3200wifi/rx.c b/drivers/net/wireless/iwmc3200wifi/rx.c
index 3257d4fad835..ad5398779240 100644
--- a/drivers/net/wireless/iwmc3200wifi/rx.c
+++ b/drivers/net/wireless/iwmc3200wifi/rx.c
@@ -343,15 +343,17 @@ static void iwm_rx_ticket_node_free(struct iwm_rx_ticket_node *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 list_head *packet_list;
- struct iwm_rx_packet *packet, *next;
-
- packet_list = &iwm->rx_packets[id_hash];
+ struct iwm_rx_packet *packet;
- list_for_each_entry_safe(packet, next, packet_list, node)
- if (packet->id == id)
+ 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;
}
@@ -389,18 +391,22 @@ void iwm_rx_free(struct iwm_priv *iwm)
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]);
}
}
@@ -428,7 +434,9 @@ static int iwm_ntf_rx_ticket(struct iwm_priv *iwm, u8 *buf,
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
@@ -461,6 +469,7 @@ static int iwm_ntf_rx_packet(struct iwm_priv *iwm, u8 *buf,
struct iwm_rx_packet *packet;
u16 id, buf_offset;
u32 packet_size;
+ u8 id_hash;
IWM_DBG_RX(iwm, DBG, "\n");
@@ -478,7 +487,10 @@ static int iwm_ntf_rx_packet(struct iwm_priv *iwm, u8 *buf,
if (IS_ERR(packet))
return PTR_ERR(packet);
- list_add_tail(&packet->node, &iwm->rx_packets[IWM_RX_ID_GET_HASH(id)]);
+ 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);
@@ -519,6 +531,8 @@ 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;
@@ -527,6 +541,18 @@ static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf,
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;
@@ -563,6 +589,7 @@ static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf,
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;
@@ -757,7 +784,7 @@ static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf,
(struct iwm_umac_notif_bss_info *)buf;
struct ieee80211_channel *channel;
struct ieee80211_supported_band *band;
- struct iwm_bss_info *bss, *next;
+ struct iwm_bss_info *bss;
s32 signal;
int freq;
u16 frame_len = le16_to_cpu(umac_bss->frame_len);
@@ -776,7 +803,7 @@ static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf,
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_safe(bss, next, &iwm->bss_list, node)
+ list_for_each_entry(bss, &iwm->bss_list, node)
if (bss->bss->table_idx == umac_bss->table_idx)
break;
@@ -843,16 +870,15 @@ static int iwm_mlme_remove_bss(struct iwm_priv *iwm, u8 *buf,
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);
+ 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",
+ IWM_DBG_MLME(iwm, ERR, "BSS removed: %pM\n",
mgmt->bssid);
list_del(&bss->node);
kfree(bss->bss);
@@ -1224,18 +1250,24 @@ static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
u8 source, cmd_id;
u16 seq_num;
u32 count;
- u8 resp;
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;
}
- count = (GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT));
+ 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) {
@@ -1243,8 +1275,6 @@ static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
return -EINVAL;
}
- resp = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_STATUS);
-
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",
@@ -1317,8 +1347,9 @@ static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
{
u8 seq_num;
struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf;
- struct iwm_nonwifi_cmd *cmd, *next;
+ 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);
/*
@@ -1329,7 +1360,7 @@ static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
* That means we only support synchronised non wifi command response
* schemes.
*/
- list_for_each_entry_safe(cmd, next, &iwm->nonwifi_pending_cmd, pending)
+ 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;
@@ -1648,6 +1679,7 @@ void iwm_rx_worker(struct work_struct *work)
* 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));
@@ -1656,12 +1688,12 @@ void iwm_rx_worker(struct work_struct *work)
IWM_DBG_RX(iwm, DBG, "Skip rx_work: Wait for ticket %d "
"to be handled first\n",
le16_to_cpu(ticket->ticket->id));
- return;
+ break;
}
list_del(&ticket->node);
- list_del(&packet->node);
iwm_rx_process_packet(iwm, packet, ticket);
}
+ spin_unlock(&iwm->ticket_lock);
}
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