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opnsense-src/sys/dev/virtio/network
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Timo Völker 52cbb08e60 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
Differential Revision:	https://reviews.freebsd.org/D51686

(cherry picked from commit 3008f30d2c2cabdd7e17f7fb922139da8681ffbd)
2025-10-10 13:31:36 +02:00
..
if_vtnet.c vtnet: improve checksum offloading 2025-10-10 13:31:36 +02:00
if_vtnetvar.h vtnet: improve checksum offloading 2025-10-10 13:31:36 +02:00
virtio_net.h virtio(4): Fix a typo in a source code comment 2024-01-25 07:43:30 +01:00