[Bug 165059] vtnet(4): Networking breaks with a router using virtio net driver on KVM host
| Newsgroups | gmane.os.freebsd.devel.net |
|---|---|
| Message-ID | <[email protected]/bugzilla/> |
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=165059 --- Comment #49 from [email protected] --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=3008f30d2c2cabdd7e17f7fb922139da8681ffbd commit 3008f30d2c2cabdd7e17f7fb922139da8681ffbd Author: Timo Völker <[email protected]> AuthorDate: 2025-09-08 20:38:49 +0000 Commit: Michael Tuexen <[email protected]> CommitDate: 2025-09-08 20:38:49 +0000 vtnet: improve checksum offloading When transmitting a packet over the vtnet interface, map the csum flags CSUM_DATA_VALID | CSUM_PSEUDO_HDR to the virtio flag VIRTIO_NET_HDR_F_DATA_VALID. When receiving a packet over the virtio network channel, translate the virtio flag VIRTIO_NET_HDR_F_NEEDS_CSUM not to CSUM_DATA_VALID | CSUM_PSEUDO_HDR, but to CSUM_TCP, CSUM_TCP_IPV6, CSUM_UDP, or CSUM_UDP_IPV6. The second change fixes a series of issue related to checksum offloading for if_vtnet. While there, improve the stats counters to allow a detailed view on what is going on in relation to checksum offloading. PR: 165059 Reviewed by: tuexen, manpages MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D51686 share/man/man4/vtnet.4 | 28 +++-- sys/dev/virtio/network/if_vtnet.c | 220 ++++++++++++++++++----------------- sys/dev/virtio/network/if_vtnetvar.h | 2 +- 3 files changed, 132 insertions(+), 118 deletions(-) -- You are receiving this mail because: You are the assignee for the bug. You are on the CC list for the bug.