From owner-svn-src-all@freebsd.org Tue May 7 20:28:13 2019 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 909461592E2C; Tue, 7 May 2019 20:28:13 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 363F373280; Tue, 7 May 2019 20:28:13 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 0D49A23591; Tue, 7 May 2019 20:28:13 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x47KSCLH096244; Tue, 7 May 2019 20:28:12 GMT (envelope-from tuexen@FreeBSD.org) Received: (from tuexen@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x47KSCn7096242; Tue, 7 May 2019 20:28:12 GMT (envelope-from tuexen@FreeBSD.org) Message-Id: <201905072028.x47KSCn7096242@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: tuexen set sender to tuexen@FreeBSD.org using -f From: Michael Tuexen Date: Tue, 7 May 2019 20:28:12 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r347233 - head/sys/dev/virtio/network X-SVN-Group: head X-SVN-Commit-Author: tuexen X-SVN-Commit-Paths: head/sys/dev/virtio/network X-SVN-Commit-Revision: 347233 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 363F373280 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.95 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.95)[-0.954,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 07 May 2019 20:28:13 -0000 Author: tuexen Date: Tue May 7 20:28:12 2019 New Revision: 347233 URL: https://svnweb.freebsd.org/changeset/base/347233 Log: Remove non-functional SCTP checksum offload support for virtio. Checksum offloading for SCTP is not currently specified for virtio. If the hypervisor announces checksum offloading support, it means TCP and UDP checksum offload. If an SCTP packet is sent and the host announced checksum offload support, the hypervisor inserts the IP checksum (16-bit) at the correct offset, but this is not the right checksum, which is a CRC32c. This results in all outgoing packets having the wrong checksum and therefore breaking SCTP based communications. This patch removes SCTP checksum offloading support from the virtio network interface. Thanks to Felix Weinrank for making me aware of the issue. Reviewed by: bryanv@ MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D20147 Modified: head/sys/dev/virtio/network/if_vtnet.c head/sys/dev/virtio/network/if_vtnetvar.h Modified: head/sys/dev/virtio/network/if_vtnet.c ============================================================================== --- head/sys/dev/virtio/network/if_vtnet.c Tue May 7 19:48:39 2019 (r347232) +++ head/sys/dev/virtio/network/if_vtnet.c Tue May 7 20:28:12 2019 (r347233) @@ -69,7 +69,6 @@ __FBSDID("$FreeBSD$"); #include #include #include -#include #include #include @@ -1525,9 +1524,6 @@ vtnet_rxq_csum_by_offset(struct vtnet_rxq *rxq, struct m->m_pkthdr.csum_flags |= CSUM_DATA_VALID | CSUM_PSEUDO_HDR; m->m_pkthdr.csum_data = 0xFFFF; break; - case offsetof(struct sctphdr, checksum): - m->m_pkthdr.csum_flags |= CSUM_SCTP_VALID; - break; default: sc->vtnet_stats.rx_csum_bad_offset++; return (1); @@ -1584,11 +1580,6 @@ vtnet_rxq_csum_by_parse(struct vtnet_rxq *rxq, struct return (1); m->m_pkthdr.csum_flags |= CSUM_DATA_VALID | CSUM_PSEUDO_HDR; m->m_pkthdr.csum_data = 0xFFFF; - break; - case IPPROTO_SCTP: - if (__predict_false(m->m_len < offset + sizeof(struct sctphdr))) - return (1); - m->m_pkthdr.csum_flags |= CSUM_SCTP_VALID; break; default: /* Modified: head/sys/dev/virtio/network/if_vtnetvar.h ============================================================================== --- head/sys/dev/virtio/network/if_vtnetvar.h Tue May 7 19:48:39 2019 (r347232) +++ head/sys/dev/virtio/network/if_vtnetvar.h Tue May 7 20:28:12 2019 (r347233) @@ -268,8 +268,8 @@ struct vtnet_mac_filter { CTASSERT(sizeof(struct vtnet_mac_filter) <= PAGE_SIZE); #define VTNET_TX_TIMEOUT 5 -#define VTNET_CSUM_OFFLOAD (CSUM_TCP | CSUM_UDP | CSUM_SCTP) -#define VTNET_CSUM_OFFLOAD_IPV6 (CSUM_TCP_IPV6 | CSUM_UDP_IPV6 | CSUM_SCTP_IPV6) +#define VTNET_CSUM_OFFLOAD (CSUM_TCP | CSUM_UDP) +#define VTNET_CSUM_OFFLOAD_IPV6 (CSUM_TCP_IPV6 | CSUM_UDP_IPV6) #define VTNET_CSUM_ALL_OFFLOAD \ (VTNET_CSUM_OFFLOAD | VTNET_CSUM_OFFLOAD_IPV6 | CSUM_TSO)