bnx2: Handle DMA mapping errors.

Before, the driver would not care about the return codes from pci_map_*
functions.  This could be potentially dangerous if a mapping failed.
Now, we will check all pci_map_* calls.  On the transmit side, we switch
to use the new function skb_dma_map().  On the receive side, we add
pci_dma_mapping_error().

Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/net/bnx2.h b/drivers/net/bnx2.h
index edc7774f2f21..617d95340160 100644
--- a/drivers/net/bnx2.h
+++ b/drivers/net/bnx2.h
@@ -6526,10 +6526,14 @@ struct sw_pg {
         DECLARE_PCI_UNMAP_ADDR(mapping)
 };
 
+struct sw_tx_bd {
+        struct sk_buff          *skb;
+};
+
 #define SW_RXBD_RING_SIZE (sizeof(struct sw_bd) * RX_DESC_CNT)
 #define SW_RXPG_RING_SIZE (sizeof(struct sw_pg) * RX_DESC_CNT)
 #define RXBD_RING_SIZE (sizeof(struct rx_bd) * RX_DESC_CNT)
-#define SW_TXBD_RING_SIZE (sizeof(struct sw_bd) * TX_DESC_CNT)
+#define SW_TXBD_RING_SIZE (sizeof(struct sw_tx_bd) * TX_DESC_CNT)
 #define TXBD_RING_SIZE (sizeof(struct tx_bd) * TX_DESC_CNT)
 
 /* Buffered flash (Atmel: AT45DB011B) specific information */
@@ -6609,7 +6613,7 @@ struct bnx2_tx_ring_info {
         u32                     tx_bseq_addr;
 
         struct tx_bd            *tx_desc_ring;
-        struct sw_bd            *tx_buf_ring;
+        struct sw_tx_bd         *tx_buf_ring;
 
         u16                     tx_cons;
         u16                     hw_tx_cons;