vnic: apply hardware L3 checksum only for IPv4
Previously we set the csum_l3 flag for IPv4 and IPv6, but only IPv4 should have header checksumming applied. Prompted by Linux commit fa6d7cb5d76cf0467c61420fc9238045aedfd379. Reviewed by: bz MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D13366
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=326597
@ -1802,6 +1802,8 @@ nicvf_sq_add_hdr_subdesc(struct snd_queue *sq, int qentry,
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if (mbuf == NULL)
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return (ENOBUFS);
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}
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if (mbuf->m_pkthdr.csum_flags & CSUM_IP)
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hdr->csum_l3 = 1; /* Enable IP csum calculation */
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ip = (struct ip *)(mbuf->m_data + ehdrlen);
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iphlen = ip->ip_hl << 2;
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@ -1809,13 +1811,10 @@ nicvf_sq_add_hdr_subdesc(struct snd_queue *sq, int qentry,
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proto = ip->ip_p;
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break;
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#endif
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default:
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hdr->csum_l3 = 0;
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}
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#if defined(INET6) || defined(INET)
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if (poff > 0 && mbuf->m_pkthdr.csum_flags != 0) {
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hdr->csum_l3 = 1; /* Enable IP csum calculation */
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switch (proto) {
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case IPPROTO_TCP:
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if ((mbuf->m_pkthdr.csum_flags & CSUM_TCP) == 0)
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