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>
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0666eb06ab
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b91398008c
2 changed files with 15 additions and 7 deletions
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@ -1140,6 +1140,8 @@ static int qeth_setup_card(struct qeth_card *card)
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card->ipato.enabled = 0;
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card->ipato.invert4 = 0;
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card->ipato.invert6 = 0;
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if (card->info.type == QETH_CARD_TYPE_IQD)
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card->options.checksum_type = NO_CHECKSUMMING;
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/* init QDIO stuff */
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qeth_init_qdio_info(card);
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return 0;
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@ -1920,16 +1920,22 @@ static inline __u16 qeth_l3_rebuild_skb(struct qeth_card *card,
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hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
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}
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skb->ip_summed = card->options.checksum_type;
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if (card->options.checksum_type == HW_CHECKSUMMING) {
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switch (card->options.checksum_type) {
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case SW_CHECKSUMMING:
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skb->ip_summed = CHECKSUM_NONE;
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break;
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case NO_CHECKSUMMING:
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skb->ip_summed = CHECKSUM_UNNECESSARY;
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break;
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case HW_CHECKSUMMING:
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if ((hdr->hdr.l3.ext_flags &
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(QETH_HDR_EXT_CSUM_HDR_REQ |
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QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
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(QETH_HDR_EXT_CSUM_HDR_REQ |
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QETH_HDR_EXT_CSUM_TRANSP_REQ))
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(QETH_HDR_EXT_CSUM_HDR_REQ |
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QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
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(QETH_HDR_EXT_CSUM_HDR_REQ |
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QETH_HDR_EXT_CSUM_TRANSP_REQ))
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skb->ip_summed = CHECKSUM_UNNECESSARY;
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else
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skb->ip_summed = SW_CHECKSUMMING;
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skb->ip_summed = CHECKSUM_NONE;
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}
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return vlan_id;
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