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Subject[21/98] atl1e:disable NETIF_F_TSO6 for hardware limit
2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------
From: Jie Yang <jie.yang@atheros.com>

commit 7c7afb083675b3d4d012a2aacec3a958ba484ab0 upstream.

For hardware limit to support TSOV6, just disable this feature
Signed-off-by: Jie Yang <jie.yang@atheros.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/net/atl1e/atl1e_main.c | 36 ------------------------------------
1 file changed, 36 deletions(-)
--- a/drivers/net/atl1e/atl1e_main.c
+++ b/drivers/net/atl1e/atl1e_main.c
@@ -1666,41 +1666,6 @@ static int atl1e_tso_csum(struct atl1e_a
}
return 0;
}
-
- if (offload_type & SKB_GSO_TCPV6) {
- real_len = (((unsigned char *)ipv6_hdr(skb) - skb->data)
- + ntohs(ipv6_hdr(skb)->payload_len));
- if (real_len < skb->len)
- pskb_trim(skb, real_len);
-
- /* check payload == 0 byte ? */
- hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb));
- if (unlikely(skb->len == hdr_len)) {
- /* only xsum need */
- dev_warn(&pdev->dev,
- "IPV6 tso with zero data??\n");
- goto check_sum;
- } else {
- tcp_hdr(skb)->check = ~csum_ipv6_magic(
- &ipv6_hdr(skb)->saddr,
- &ipv6_hdr(skb)->daddr,
- 0, IPPROTO_TCP, 0);
- tpd->word3 |= 1 << TPD_IP_VERSION_SHIFT;
- hdr_len >>= 1;
- tpd->word3 |= (hdr_len & TPD_V6_IPHLLO_MASK) <<
- TPD_V6_IPHLLO_SHIFT;
- tpd->word3 |= ((hdr_len >> 3) &
- TPD_V6_IPHLHI_MASK) <<
- TPD_V6_IPHLHI_SHIFT;
- tpd->word3 |= (tcp_hdrlen(skb) >> 2 &
- TPD_TCPHDRLEN_MASK) <<
- TPD_TCPHDRLEN_SHIFT;
- tpd->word3 |= ((skb_shinfo(skb)->gso_size) &
- TPD_MSS_MASK) << TPD_MSS_SHIFT;
- tpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT;
- }
- }
- return 0;
}

check_sum:
@@ -2289,7 +2254,6 @@ static int atl1e_init_netdev(struct net_
NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
netdev->features |= NETIF_F_LLTX;
netdev->features |= NETIF_F_TSO;
- netdev->features |= NETIF_F_TSO6;

return 0;
}



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