diff options
| -rw-r--r-- | drivers/net/wireless/mwifiex/decl.h | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/mwifiex/sta_tx.c | 13 |
2 files changed, 12 insertions, 5 deletions
diff --git a/drivers/net/wireless/mwifiex/decl.h b/drivers/net/wireless/mwifiex/decl.h index 0e90b0986ed8..94ddc9038cb3 100644 --- a/drivers/net/wireless/mwifiex/decl.h +++ b/drivers/net/wireless/mwifiex/decl.h @@ -30,7 +30,9 @@ #define MWIFIEX_MAX_BSS_NUM (1) -#define MWIFIEX_MIN_DATA_HEADER_LEN 32 /* (sizeof(mwifiex_txpd)) */ +#define MWIFIEX_MIN_DATA_HEADER_LEN 36 /* sizeof(mwifiex_txpd) + * + 4 byte alignment + */ #define MWIFIEX_MAX_TX_BASTREAM_SUPPORTED 2 #define MWIFIEX_MAX_RX_BASTREAM_SUPPORTED 16 diff --git a/drivers/net/wireless/mwifiex/sta_tx.c b/drivers/net/wireless/mwifiex/sta_tx.c index fa6221bc9104..1822bfad8896 100644 --- a/drivers/net/wireless/mwifiex/sta_tx.c +++ b/drivers/net/wireless/mwifiex/sta_tx.c @@ -47,6 +47,7 @@ void *mwifiex_process_sta_txpd(struct mwifiex_private *priv, struct mwifiex_adapter *adapter = priv->adapter; struct txpd *local_tx_pd; struct mwifiex_txinfo *tx_info = MWIFIEX_SKB_TXCB(skb); + u8 pad; if (!skb->len) { dev_err(adapter->dev, "Tx: bad packet length: %d\n", @@ -55,15 +56,19 @@ void *mwifiex_process_sta_txpd(struct mwifiex_private *priv, return skb->data; } - BUG_ON(skb_headroom(skb) < (sizeof(*local_tx_pd) + INTF_HEADER_LEN)); - skb_push(skb, sizeof(*local_tx_pd)); + /* If skb->data is not aligned; add padding */ + pad = (4 - (((void *)skb->data - NULL) & 0x3)) % 4; + + BUG_ON(skb_headroom(skb) < (sizeof(*local_tx_pd) + INTF_HEADER_LEN + + pad)); + skb_push(skb, sizeof(*local_tx_pd) + pad); local_tx_pd = (struct txpd *) skb->data; memset(local_tx_pd, 0, sizeof(struct txpd)); local_tx_pd->bss_num = priv->bss_num; local_tx_pd->bss_type = priv->bss_type; local_tx_pd->tx_pkt_length = cpu_to_le16((u16) (skb->len - - sizeof(struct txpd))); + (sizeof(struct txpd) + pad))); local_tx_pd->priority = (u8) skb->priority; local_tx_pd->pkt_delay_2ms = @@ -88,7 +93,7 @@ void *mwifiex_process_sta_txpd(struct mwifiex_private *priv, } /* Offset of actual data */ - local_tx_pd->tx_pkt_offset = cpu_to_le16(sizeof(struct txpd)); + local_tx_pd->tx_pkt_offset = cpu_to_le16(sizeof(struct txpd) + pad); /* make space for INTF_HEADER_LEN */ skb_push(skb, INTF_HEADER_LEN); |