bgmac: implement GRO and use build_skb

This improves performance for routing and local rx

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/net/ethernet/broadcom/bgmac.h b/drivers/net/ethernet/broadcom/bgmac.h
index 1f9f36f2b658..3ad965fe7fcc 100644
--- a/drivers/net/ethernet/broadcom/bgmac.h
+++ b/drivers/net/ethernet/broadcom/bgmac.h
@@ -362,6 +362,8 @@
 #define BGMAC_RX_FRAME_OFFSET                   30              /* There are 2 unused bytes between header and real data */
 #define BGMAC_RX_MAX_FRAME_SIZE                 1536            /* Copied from b44/tg3 */
 #define BGMAC_RX_BUF_SIZE                       (BGMAC_RX_FRAME_OFFSET + BGMAC_RX_MAX_FRAME_SIZE)
+#define BGMAC_RX_ALLOC_SIZE                     (SKB_DATA_ALIGN(BGMAC_RX_BUF_SIZE) + \
+                                                 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))
 
 #define BGMAC_BFL_ENETROBO                      0x0010          /* has ephy roboswitch spi */
 #define BGMAC_BFL_ENETADM                       0x0080          /* has ADMtek switch */
@@ -383,7 +385,10 @@
 #define ETHER_MAX_LEN   1518
 
 struct bgmac_slot_info {
-        struct sk_buff *skb;
+        union {
+                struct sk_buff *skb;
+                void *buf;
+        };
         dma_addr_t dma_addr;
 };