diff options
| author | Kittipon Meesompop | 2018-04-26 09:42:22 +0200 |
|---|---|---|
| committer | David S. Miller | 2018-04-27 19:38:49 +0200 |
| commit | 571f9dd8026b44fe52d9ca9ed6a68c53aad1f3ba (patch) | |
| tree | f416457ad6ff96730b6ba225d86ed121945b1ae0 /drivers/s390/net/qeth_l2_main.c | |
| parent | s390/qeth: extend Checksum Offload Assists for IPv6 (diff) | |
| download | kernel-qcow2-linux-571f9dd8026b44fe52d9ca9ed6a68c53aad1f3ba.tar.gz kernel-qcow2-linux-571f9dd8026b44fe52d9ca9ed6a68c53aad1f3ba.tar.xz kernel-qcow2-linux-571f9dd8026b44fe52d9ca9ed6a68c53aad1f3ba.zip | |
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_l2_main.c')
| -rw-r--r-- | drivers/s390/net/qeth_l2_main.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index 945df56434fd..5b1780fa4cb5 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -660,7 +660,8 @@ out: } static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb, - struct qeth_qdio_out_q *queue, int cast_type) + struct qeth_qdio_out_q *queue, int cast_type, + int ipv) { int push_len = sizeof(struct qeth_hdr); unsigned int elements, nr_frags; @@ -699,7 +700,7 @@ static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb, } qeth_l2_fill_header(hdr, skb, cast_type, skb->len - push_len); if (skb->ip_summed == CHECKSUM_PARTIAL) { - qeth_tx_csum(skb, &hdr->hdr.l2.flags[1]); + qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], ipv); if (card->options.performance_stats) card->perf_stats.tx_csum++; } @@ -754,6 +755,7 @@ static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, { struct qeth_card *card = dev->ml_priv; int cast_type = qeth_l2_get_cast_type(card, skb); + int ipv = qeth_get_ip_version(skb); struct qeth_qdio_out_q *queue; int tx_bytes = skb->len; int rc; @@ -761,7 +763,7 @@ static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, if (card->qdio.do_prio_queueing || (cast_type && card->info.is_multicast_different)) queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb, - qeth_get_ip_version(skb), cast_type)]; + ipv, cast_type)]; else queue = card->qdio.out_qs[card->qdio.default_out_queue]; @@ -784,7 +786,7 @@ static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, rc = qeth_l2_xmit_iqd(card, skb, queue, cast_type); break; default: - rc = qeth_l2_xmit_osa(card, skb, queue, cast_type); + rc = qeth_l2_xmit_osa(card, skb, queue, cast_type, ipv); } if (!rc) { @@ -995,6 +997,10 @@ static int qeth_l2_setup_netdev(struct qeth_card *card) card->dev->vlan_features |= NETIF_F_RXCSUM; } } + 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; + } card->info.broadcast_capable = 1; qeth_l2_request_initial_mac(card); |