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path: root/drivers/net/wireless/iwlwifi/iwl-tx.c
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-tx.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-tx.c94
1 files changed, 54 insertions, 40 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c
index d82823b5c8a..907a53ebc6e 100644
--- a/drivers/net/wireless/iwlwifi/iwl-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-tx.c
@@ -63,7 +63,7 @@ static const u16 default_tid_to_tx_fifo[] = {
* Does NOT advance any TFD circular buffer read/write indexes
* Does NOT free the TFD itself (which is within circular buffer)
*/
-int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+static int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
{
struct iwl_tfd_frame *bd_tmp = (struct iwl_tfd_frame *)&txq->bd[0];
struct iwl_tfd_frame *bd = &bd_tmp[txq->q.read_ptr];
@@ -115,10 +115,8 @@ int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
}
return 0;
}
-EXPORT_SYMBOL(iwl_hw_txq_free_tfd);
-
-int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr,
+static int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr,
dma_addr_t addr, u16 len)
{
int index, is_odd;
@@ -126,7 +124,7 @@ int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr,
u32 num_tbs = IWL_GET_BITS(*tfd, num_tbs);
/* Each TFD can point to a maximum 20 Tx buffers */
- if ((num_tbs >= MAX_NUM_OF_TBS) || (num_tbs < 0)) {
+ if (num_tbs >= MAX_NUM_OF_TBS) {
IWL_ERROR("Error can not send more than %d chunks\n",
MAX_NUM_OF_TBS);
return -EINVAL;
@@ -151,7 +149,6 @@ int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr,
return 0;
}
-EXPORT_SYMBOL(iwl_hw_txq_attach_buf_to_tfd);
/**
* iwl_txq_update_write_ptr - Send new write index to hardware
@@ -402,12 +399,11 @@ static int iwl_hw_tx_queue_init(struct iwl_priv *priv,
/**
* iwl_tx_queue_init - Allocate and initialize one tx/cmd queue
*/
-static int iwl_tx_queue_init(struct iwl_priv *priv,
- struct iwl_tx_queue *txq,
+static int iwl_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq,
int slots_num, u32 txq_id)
{
int i, len;
- int rc = 0;
+ int ret;
/*
* Alloc buffer array for commands (Tx or other types of commands).
@@ -426,19 +422,16 @@ static int iwl_tx_queue_init(struct iwl_priv *priv,
continue;
}
- txq->cmd[i] = kmalloc(len, GFP_KERNEL | GFP_DMA);
+ txq->cmd[i] = kmalloc(len, GFP_KERNEL);
if (!txq->cmd[i])
- return -ENOMEM;
+ goto err;
}
/* Alloc driver data array and TFD circular buffer */
- rc = iwl_tx_queue_alloc(priv, txq, txq_id);
- if (rc) {
- for (i = 0; i < slots_num; i++)
- kfree(txq->cmd[i]);
+ ret = iwl_tx_queue_alloc(priv, txq, txq_id);
+ if (ret)
+ goto err;
- return -ENOMEM;
- }
txq->need_update = 0;
/* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
@@ -452,6 +445,17 @@ static int iwl_tx_queue_init(struct iwl_priv *priv,
iwl_hw_tx_queue_init(priv, txq);
return 0;
+err:
+ for (i = 0; i < slots_num; i++) {
+ kfree(txq->cmd[i]);
+ txq->cmd[i] = NULL;
+ }
+
+ if (txq_id == IWL_CMD_QUEUE_NUM) {
+ kfree(txq->cmd[slots_num]);
+ txq->cmd[slots_num] = NULL;
+ }
+ return -ENOMEM;
}
/**
* iwl_hw_txq_ctx_free - Free TXQ Context
@@ -471,7 +475,6 @@ void iwl_hw_txq_ctx_free(struct iwl_priv *priv)
}
EXPORT_SYMBOL(iwl_hw_txq_ctx_free);
-
/**
* iwl_txq_ctx_reset - Reset TX queue context
* Destroys all DMA structures and initialise them again
@@ -538,6 +541,7 @@ int iwl_txq_ctx_reset(struct iwl_priv *priv)
error_kw:
return ret;
}
+
/**
* iwl_txq_ctx_stop - Stop all Tx DMA channels, free Tx queue memory
*/
@@ -789,11 +793,6 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
goto drop_unlock;
}
- if (!priv->vif) {
- IWL_DEBUG_DROP("Dropping - !priv->vif\n");
- goto drop_unlock;
- }
-
if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) ==
IWL_INVALID_RATE) {
IWL_ERROR("ERROR: No TX rate available.\n");
@@ -815,16 +814,18 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
/* drop all data frame if we are not associated */
if (ieee80211_is_data(fc) &&
- (!iwl_is_associated(priv) ||
- ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
- !priv->assoc_station_added)) {
+ (priv->iw_mode != NL80211_IFTYPE_MONITOR ||
+ !(info->flags & IEEE80211_TX_CTL_INJECTED)) && /* packet injection */
+ (!iwl_is_associated(priv) ||
+ ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id) ||
+ !priv->assoc_station_added)) {
IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
goto drop_unlock;
}
spin_unlock_irqrestore(&priv->lock, flags);
- hdr_len = ieee80211_get_hdrlen(le16_to_cpu(fc));
+ hdr_len = ieee80211_hdrlen(fc);
/* Find (or create) index into station table for destination station */
sta_id = iwl_get_sta_id(priv, hdr);
@@ -842,7 +843,7 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
txq_id = swq_id;
if (ieee80211_is_data_qos(fc)) {
qc = ieee80211_get_qos_ctl(hdr);
- tid = qc[0] & 0xf;
+ tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
seq_number = priv->stations[sta_id].tid[tid].seq_number;
seq_number &= IEEE80211_SCTL_SEQ;
hdr->seq_ctrl = hdr->seq_ctrl &
@@ -1057,7 +1058,7 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
INDEX_TO_SEQ(q->write_ptr));
if (out_cmd->meta.flags & CMD_SIZE_HUGE)
- out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
+ out_cmd->hdr.sequence |= SEQ_HUGE_FRAME;
len = (idx == TFD_CMD_SLOTS) ?
IWL_MAX_SCAN_SIZE : sizeof(struct iwl_cmd);
phys_addr = pci_map_single(priv->pci_dev, out_cmd, len,
@@ -1065,12 +1066,26 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
phys_addr += offsetof(struct iwl_cmd, hdr);
iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
- IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
- "%d bytes at %d[%d]:%d\n",
- get_cmd_string(out_cmd->hdr.cmd),
- out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
- fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
-
+#ifdef CONFIG_IWLWIFI_DEBUG
+ switch (out_cmd->hdr.cmd) {
+ case REPLY_TX_LINK_QUALITY_CMD:
+ case SENSITIVITY_CMD:
+ IWL_DEBUG_HC_DUMP("Sending command %s (#%x), seq: 0x%04X, "
+ "%d bytes at %d[%d]:%d\n",
+ get_cmd_string(out_cmd->hdr.cmd),
+ out_cmd->hdr.cmd,
+ le16_to_cpu(out_cmd->hdr.sequence), fix_size,
+ q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
+ break;
+ default:
+ IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
+ "%d bytes at %d[%d]:%d\n",
+ get_cmd_string(out_cmd->hdr.cmd),
+ out_cmd->hdr.cmd,
+ le16_to_cpu(out_cmd->hdr.sequence), fix_size,
+ q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
+ }
+#endif
txq->need_update = 1;
/* Set up entry in queue's byte count circular buffer */
@@ -1178,17 +1193,16 @@ void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
int txq_id = SEQ_TO_QUEUE(sequence);
int index = SEQ_TO_INDEX(sequence);
- int huge = sequence & SEQ_HUGE_FRAME;
int cmd_index;
+ bool huge = !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
struct iwl_cmd *cmd;
/* If a Tx command is being handled and it isn't in the actual
* command queue then there a command routing bug has been introduced
* in the queue management code. */
- if (txq_id != IWL_CMD_QUEUE_NUM)
- IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
- txq_id, pkt->hdr.cmd);
- BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
+ if (WARN(txq_id != IWL_CMD_QUEUE_NUM,
+ "wrong command queue %d, command id 0x%X\n", txq_id, pkt->hdr.cmd))
+ return;
cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
cmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-17 07:37:45 +0000