diff options
| author | Kittipon Meesompop <kmeesomp@linux.vnet.ibm.com> | 2018-04-26 09:42:22 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-04-27 13:38:49 -0400 |
| commit | 571f9dd8026b44fe52d9ca9ed6a68c53aad1f3ba (patch) | |
| tree | f416457ad6ff96730b6ba225d86ed121945b1ae0 /drivers/s390/net/qeth_l3_main.c | |
| parent | a8155b009f133445e874fb84c43f85091b345617 (diff) | |
s390/qeth: add IPv6 TX checksum offload support
Check if a qeth device supports IPv6 TX checksum offload, and advertise
NETIF_F_IPV6_CSUM accordingly. Add support for setting the relevant bits
in IPv6 packet descriptors.
Currently this has only limited use (ie. UDP, or Jumbo Frames). For any
TCP traffic with a standard MSS, the TCP checksum gets calculated
as part of the linear GSO segmentation.
Signed-off-by: Kittipon Meesompop <kmeesomp@linux.vnet.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390/net/qeth_l3_main.c')
| -rw-r--r-- | drivers/s390/net/qeth_l3_main.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index dd233fe3d6c4..e7fa479adf47 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -2281,7 +2281,7 @@ static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb, } if (new_skb->ip_summed == CHECKSUM_PARTIAL) { - qeth_tx_csum(new_skb, &hdr->hdr.l3.ext_flags); + qeth_tx_csum(new_skb, &hdr->hdr.l3.ext_flags, ipv); if (card->options.performance_stats) card->perf_stats.tx_csum++; } @@ -2507,6 +2507,11 @@ static int qeth_l3_setup_netdev(struct qeth_card *card) card->dev->vlan_features |= NETIF_F_TSO | NETIF_F_RXCSUM | NETIF_F_IP_CSUM; } + + if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { + card->dev->hw_features |= NETIF_F_IPV6_CSUM; + card->dev->vlan_features |= NETIF_F_IPV6_CSUM; + } } else if (card->info.type == QETH_CARD_TYPE_IQD) { card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, ether_setup); |