The following reply was made to PR kern/144529; it has been noted by GNATS.
From: dfil...@freebsd.org (dfilter service) To: bug-follo...@freebsd.org Cc: Subject: Re: kern/144529: commit references a PR Date: Fri, 12 Mar 2010 22:59:06 +0000 (UTC) Author: rrs Date: Fri Mar 12 22:58:52 2010 New Revision: 205104 URL: http://svn.freebsd.org/changeset/base/205104 Log: The proper fix for the delayed SCTP checksum is to have the delayed function take an argument as to the offset to the SCTP header. This allows it to work for V4 and V6. This of course means changing all callers of the function to either pass the header len, if they have it, or create it (ip_hl << 2 or sizeof(ip6_hdr)). PR: 144529 MFC after: 2 weeks Modified: head/sys/dev/xen/netback/netback.c head/sys/netinet/ip_divert.c head/sys/netinet/ip_ipsec.c head/sys/netinet/ip_output.c head/sys/netinet/sctp_crc32.c head/sys/netinet/sctp_crc32.h head/sys/netinet6/ip6_output.c Modified: head/sys/dev/xen/netback/netback.c ============================================================================== --- head/sys/dev/xen/netback/netback.c Fri Mar 12 22:39:35 2010 (r205103) +++ head/sys/dev/xen/netback/netback.c Fri Mar 12 22:58:52 2010 (r205104) @@ -302,7 +302,7 @@ fixup_checksum(struct mbuf *m) m->m_pkthdr.csum_flags &= ~CSUM_TCP; #ifdef SCTP } else if (sw_csum & CSUM_SCTP) { - sctp_delayed_cksum(m); + sctp_delayed_cksum(m, iphlen); sw_csum &= ~CSUM_SCTP; #endif } else { Modified: head/sys/netinet/ip_divert.c ============================================================================== --- head/sys/netinet/ip_divert.c Fri Mar 12 22:39:35 2010 (r205103) +++ head/sys/netinet/ip_divert.c Fri Mar 12 22:58:52 2010 (r205104) @@ -227,7 +227,7 @@ divert_packet(struct mbuf *m, int incomi #ifdef SCTP if (m->m_pkthdr.csum_flags & CSUM_SCTP) { ip->ip_len = ntohs(ip->ip_len); - sctp_delayed_cksum(m); + sctp_delayed_cksum(m, (uint32_t)(ip->ip_hl << 2)); m->m_pkthdr.csum_flags &= ~CSUM_SCTP; ip->ip_len = htons(ip->ip_len); } Modified: head/sys/netinet/ip_ipsec.c ============================================================================== --- head/sys/netinet/ip_ipsec.c Fri Mar 12 22:39:35 2010 (r205103) +++ head/sys/netinet/ip_ipsec.c Fri Mar 12 22:58:52 2010 (r205104) @@ -342,7 +342,7 @@ ip_ipsec_output(struct mbuf **m, struct } #ifdef SCTP if ((*m)->m_pkthdr.csum_flags & CSUM_SCTP) { - sctp_delayed_cksum(*m); + sctp_delayed_cksum(*m, (uint32_t)(ip->ip_hl << 2)); (*m)->m_pkthdr.csum_flags &= ~CSUM_SCTP; } #endif Modified: head/sys/netinet/ip_output.c ============================================================================== --- head/sys/netinet/ip_output.c Fri Mar 12 22:39:35 2010 (r205103) +++ head/sys/netinet/ip_output.c Fri Mar 12 22:58:52 2010 (r205104) @@ -583,7 +583,7 @@ passout: } #ifdef SCTP if (sw_csum & CSUM_SCTP) { - sctp_delayed_cksum(m); + sctp_delayed_cksum(m, (uint32_t)(ip->ip_hl << 2)); sw_csum &= ~CSUM_SCTP; } #endif @@ -725,7 +725,7 @@ ip_fragment(struct ip *ip, struct mbuf * #ifdef SCTP if (m0->m_pkthdr.csum_flags & CSUM_SCTP && (if_hwassist_flags & CSUM_IP_FRAGS) == 0) { - sctp_delayed_cksum(m0); + sctp_delayed_cksum(m0, hlen); m0->m_pkthdr.csum_flags &= ~CSUM_SCTP; } #endif Modified: head/sys/netinet/sctp_crc32.c ============================================================================== --- head/sys/netinet/sctp_crc32.c Fri Mar 12 22:39:35 2010 (r205103) +++ head/sys/netinet/sctp_crc32.c Fri Mar 12 22:58:52 2010 (r205104) @@ -127,14 +127,12 @@ sctp_calculate_cksum(struct mbuf *m, uin void -sctp_delayed_cksum(struct mbuf *m) +sctp_delayed_cksum(struct mbuf *m, uint32_t offset) { struct ip *ip; uint32_t checksum; - uint32_t offset; ip = mtod(m, struct ip *); - offset = ip->ip_hl << 2; checksum = sctp_calculate_cksum(m, offset); SCTP_STAT_DECR(sctps_sendhwcrc); SCTP_STAT_INCR(sctps_sendswcrc); Modified: head/sys/netinet/sctp_crc32.h ============================================================================== --- head/sys/netinet/sctp_crc32.h Fri Mar 12 22:39:35 2010 (r205103) +++ head/sys/netinet/sctp_crc32.h Fri Mar 12 22:58:52 2010 (r205104) @@ -39,7 +39,7 @@ __FBSDID("$FreeBSD$"); #if defined(_KERNEL) || defined(__Userspace__) uint32_t sctp_calculate_cksum(struct mbuf *, uint32_t); -void sctp_delayed_cksum(struct mbuf *); +void sctp_delayed_cksum(struct mbuf *, uint32_t offset); #endif /* _KERNEL */ Modified: head/sys/netinet6/ip6_output.c ============================================================================== --- head/sys/netinet6/ip6_output.c Fri Mar 12 22:39:35 2010 (r205103) +++ head/sys/netinet6/ip6_output.c Fri Mar 12 22:58:52 2010 (r205104) @@ -872,7 +872,7 @@ passout: #ifdef SCTP sw_csum = m->m_pkthdr.csum_flags & ~ifp->if_hwassist; if (sw_csum & CSUM_SCTP) { - sctp_delayed_cksum(m); + sctp_delayed_cksum(m, sizeof(struct ip6_hdr)); sw_csum &= ~CSUM_SCTP; } #endif _______________________________________________ svn-src-...@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org" _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
