tg3: Reintroduce tg3_tx_ring_info

The following patches will require the use of an additional flag in the
ring_info structure.  The use of this flag is tx path specific, so this
patch defines a specialized ring_info structure.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 12 insertions, 7 deletions

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 803576568154..3708159548fc 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -4824,7 +4824,7 @@ static void tg3_tx(struct tg3_napi *tnapi)
         txq = netdev_get_tx_queue(tp->dev, index);
 
         while (sw_idx != hw_idx) {
-                struct ring_info *ri = &tnapi->tx_buffers[sw_idx];
+                struct tg3_tx_ring_info *ri = &tnapi->tx_buffers[sw_idx];
                 struct sk_buff *skb = ri->skb;
                 int i, tx_bug = 0;
 
@@ -5929,7 +5929,7 @@ static void tg3_skb_error_unmap(struct tg3_napi *tnapi,
 {
         int i;
         u32 entry = tnapi->tx_prod;
-        struct ring_info *txb = &tnapi->tx_buffers[entry];
+        struct tg3_tx_ring_info *txb = &tnapi->tx_buffers[entry];
 
         pci_unmap_single(tnapi->tp->pdev,
                          dma_unmap_addr(txb, mapping),
@@ -6603,7 +6603,7 @@ static void tg3_free_rings(struct tg3 *tp)
                         continue;
 
                 for (i = 0; i < TG3_TX_RING_SIZE; ) {
-                        struct ring_info *txp;
+                        struct tg3_tx_ring_info *txp;
                         struct sk_buff *skb;
                         unsigned int k;
 
@@ -6762,9 +6762,9 @@ static int tg3_alloc_consistent(struct tg3 *tp)
                  */
                 if ((!i && !tg3_flag(tp, ENABLE_TSS)) ||
                     (i && tg3_flag(tp, ENABLE_TSS))) {
-                        tnapi->tx_buffers = kzalloc(sizeof(struct ring_info) *
-                                                    TG3_TX_RING_SIZE,
-                                                    GFP_KERNEL);
+                        tnapi->tx_buffers = kzalloc(
+                                               sizeof(struct tg3_tx_ring_info) *
+                                               TG3_TX_RING_SIZE, GFP_KERNEL);
                         if (!tnapi->tx_buffers)
                                 goto err_out;
 
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 691539ba17b3..f6986ca50d80 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -2652,6 +2652,11 @@ struct ring_info {
         DEFINE_DMA_UNMAP_ADDR(mapping);
 };
 
+struct tg3_tx_ring_info {
+        struct sk_buff                  *skb;
+        DEFINE_DMA_UNMAP_ADDR(mapping);
+};
+
 struct tg3_link_config {
         /* Describes what we're trying to get. */
         u32                             advertising;
@@ -2816,7 +2821,7 @@ struct tg3_napi {
         u32                             last_tx_cons;
         u32                             prodmbox;
         struct tg3_tx_buffer_desc       *tx_ring;
-        struct ring_info                *tx_buffers;
+        struct tg3_tx_ring_info         *tx_buffers;
 
         dma_addr_t                      status_mapping;
         dma_addr_t                      rx_rcb_mapping;