bnx2x: fix TCP offload for tunneling ipv4 over ipv6

[linux-2.6-microblaze.git] / drivers / net / ethernet / broadcom / bnx2x / bnx2x_cmn.c

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index b8fbe26..e3fe1ce 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -3192,11 +3192,11 @@ static u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb)
                rc |= XMIT_CSUM_TCP;
 
        if (skb_is_gso_v6(skb)) {
-               rc |= (XMIT_GSO_V6 | XMIT_CSUM_TCP | XMIT_CSUM_V6);
+               rc |= (XMIT_GSO_V6 | XMIT_CSUM_TCP);
                if (rc & XMIT_CSUM_ENC)
                        rc |= XMIT_GSO_ENC_V6;
        } else if (skb_is_gso(skb)) {
-               rc |= (XMIT_GSO_V4 | XMIT_CSUM_V4 | XMIT_CSUM_TCP);
+               rc |= (XMIT_GSO_V4 | XMIT_CSUM_TCP);
                if (rc & XMIT_CSUM_ENC)
                        rc |= XMIT_GSO_ENC_V4;
        }
@@ -3313,6 +3313,7 @@ static void bnx2x_set_pbd_gso_e2(struct sk_buff *skb, u32 *parsing_data,
  */
 static void bnx2x_set_pbd_gso(struct sk_buff *skb,
                              struct eth_tx_parse_bd_e1x *pbd,
+                             struct eth_tx_start_bd *tx_start_bd,
                              u32 xmit_type)
 {
        pbd->lso_mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
@@ -3326,11 +3327,14 @@ static void bnx2x_set_pbd_gso(struct sk_buff *skb,
                                                   ip_hdr(skb)->daddr,
                                                   0, IPPROTO_TCP, 0));
 
-       } else
+               /* GSO on 57710/57711 needs FW to calculate IP checksum */
+               tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_IP_CSUM;
+       } else {
                pbd->tcp_pseudo_csum =
                        bswab16(~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
                                                 &ipv6_hdr(skb)->daddr,
                                                 0, IPPROTO_TCP, 0));
+       }
 
        pbd->global_data |=
                cpu_to_le16(ETH_TX_PARSE_BD_E1X_PSEUDO_CS_WITHOUT_LEN);
@@ -3479,19 +3483,18 @@ static void bnx2x_update_pbds_gso_enc(struct sk_buff *skb,
 {
        u16 hlen_w = 0;
        u8 outerip_off, outerip_len = 0;
+
        /* from outer IP to transport */
        hlen_w = (skb_inner_transport_header(skb) -
                  skb_network_header(skb)) >> 1;
 
        /* transport len */
-       if (xmit_type & XMIT_CSUM_TCP)
-               hlen_w += inner_tcp_hdrlen(skb) >> 1;
-       else
-               hlen_w += sizeof(struct udphdr) >> 1;
+       hlen_w += inner_tcp_hdrlen(skb) >> 1;
 
        pbd2->fw_ip_hdr_to_payload_w = hlen_w;
 
-       if (xmit_type & XMIT_CSUM_ENC_V4) {
+       /* outer IP header info */
+       if (xmit_type & XMIT_CSUM_V4) {
                struct iphdr *iph = ip_hdr(skb);
                pbd2->fw_ip_csum_wo_len_flags_frag =
                        bswab16(csum_fold((~iph->check) -
@@ -3814,7 +3817,8 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
                        bnx2x_set_pbd_gso_e2(skb, &pbd_e2_parsing_data,
                                             xmit_type);
                else
-                       bnx2x_set_pbd_gso(skb, pbd_e1x, xmit_type);
+                       bnx2x_set_pbd_gso(skb, pbd_e1x, tx_start_bd,
+                                         xmit_type);
        }
 
        /* Set the PBD's parsing_data field if not zero