diff options
| author | Ursula Braun <ursula.braun@de.ibm.com> | 2009-05-19 23:38:40 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-05-21 02:36:51 +0200 |
| commit | b91398008cae916c528d907f5d7a9ed54f35b4e9 (patch) | |
| tree | e0c0122a2fe43cadba4db0b29c404ccb50b80609 /drivers/s390/net | |
| parent | qeth: support z/VM VSWITCH Port Isolation (diff) | |
| download | linux-b91398008cae916c528d907f5d7a9ed54f35b4e9.tar.xz linux-b91398008cae916c528d907f5d7a9ed54f35b4e9.zip | |
qeth: omit upstream checksumming for HiperSockets
For HiperSocket devices receive-path checksumming is not required.
Thus NO_CHECKSUMMING is used as default for HiperSocket interfaces.
For layer3 devices configured with NO_CHECKSUMMING received skbs
should have set their ip_summed field to CHECKSUM_UNNECESSARY.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390/net')
| -rw-r--r-- | drivers/s390/net/qeth_core_main.c | 2 | ||||
| -rw-r--r-- | drivers/s390/net/qeth_l3_main.c | 20 |
2 files changed, 15 insertions, 7 deletions
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index c827d69b5a91..63c9c05d6147 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -1140,6 +1140,8 @@ static int qeth_setup_card(struct qeth_card *card) card->ipato.enabled = 0; card->ipato.invert4 = 0; card->ipato.invert6 = 0; + if (card->info.type == QETH_CARD_TYPE_IQD) + card->options.checksum_type = NO_CHECKSUMMING; /* init QDIO stuff */ qeth_init_qdio_info(card); return 0; diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index 5873240c3cea..b36b5cdf9000 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -1920,16 +1920,22 @@ static inline __u16 qeth_l3_rebuild_skb(struct qeth_card *card, hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]); } - skb->ip_summed = card->options.checksum_type; - if (card->options.checksum_type == HW_CHECKSUMMING) { + switch (card->options.checksum_type) { + case SW_CHECKSUMMING: + skb->ip_summed = CHECKSUM_NONE; + break; + case NO_CHECKSUMMING: + skb->ip_summed = CHECKSUM_UNNECESSARY; + break; + case HW_CHECKSUMMING: if ((hdr->hdr.l3.ext_flags & - (QETH_HDR_EXT_CSUM_HDR_REQ | - QETH_HDR_EXT_CSUM_TRANSP_REQ)) == - (QETH_HDR_EXT_CSUM_HDR_REQ | - QETH_HDR_EXT_CSUM_TRANSP_REQ)) + (QETH_HDR_EXT_CSUM_HDR_REQ | + QETH_HDR_EXT_CSUM_TRANSP_REQ)) == + (QETH_HDR_EXT_CSUM_HDR_REQ | + QETH_HDR_EXT_CSUM_TRANSP_REQ)) skb->ip_summed = CHECKSUM_UNNECESSARY; else - skb->ip_summed = SW_CHECKSUMMING; + skb->ip_summed = CHECKSUM_NONE; } return vlan_id; |