Merge branch 'vxlan_bnx2x_offload'

Dmitry Kravkov says:

====================
The series fixes GSO flags in vxlan xmit code and
adds appropriate code for bnx2x driver to utilize
fw support for UDP tunneling protocols offload.

Netperf's results below show improvement in throughput
between two vxlan interfaces:
before:
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 9.0.0.2 (9.0.0.2) port 0 AF_INET
Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

 87380  16384  16384    10.20     228.73

after:
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 9.0.0.2 (9.0.0.2) port 0 AF_INET
Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

 87380  16384  16384    10.00    3314.75
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c

@@ -3530,6 +3530,11 @@ static void bnx2x_update_pbds_gso_enc(struct sk_buff *skb,
 			ETH_TX_PARSE_2ND_BD_IP_HDR_LEN_OUTER_W_SHIFT) |
 		((skb->protocol == cpu_to_be16(ETH_P_8021Q)) <<
 			ETH_TX_PARSE_2ND_BD_LLC_SNAP_EN_SHIFT);
+
+	if (ip_hdr(skb)->protocol == IPPROTO_UDP) {
+		SET_FLAG(*global_data, ETH_TX_PARSE_2ND_BD_TUNNEL_UDP_EXIST, 1);
+		pbd2->tunnel_udp_hdr_start_w = skb_transport_offset(skb) >> 1;
+	}
 }
 
 /* called with netif_tx_lock

drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c

@@ -12043,11 +12043,11 @@ static int bnx2x_init_dev(struct bnx2x *bp, struct pci_dev *pdev,
 		NETIF_F_RXCSUM | NETIF_F_LRO | NETIF_F_GRO |
 		NETIF_F_RXHASH | NETIF_F_HW_VLAN_CTAG_TX;
 	if (!CHIP_IS_E1x(bp)) {
-		dev->hw_features |= NETIF_F_GSO_GRE;
+		dev->hw_features |= NETIF_F_GSO_GRE | NETIF_F_GSO_UDP_TUNNEL;
 		dev->hw_enc_features =
 			NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_SG |
 			NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6 |
-			NETIF_F_GSO_GRE;
+			NETIF_F_GSO_GRE | NETIF_F_GSO_UDP_TUNNEL;
 	}
 
 	dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |

drivers/net/vxlan.c

@@ -917,7 +917,7 @@ static int handle_offloads(struct sk_buff *skb)
 		if (unlikely(err))
 			return err;
 
-		skb_shinfo(skb)->gso_type |= (SKB_GSO_UDP_TUNNEL | SKB_GSO_UDP);
+		skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_TUNNEL;
 	} else if (skb->ip_summed != CHECKSUM_PARTIAL)
 		skb->ip_summed = CHECKSUM_NONE;