Warner Losh a51aee0a98 vtnet: Adjust for ethernet alignment. ... If the header that we add to the packet's size is 0 % 4 and we're strictly aligning, then we need to adjust where we store the header so the packet that follows will have it's struct ip header properly aligned. We do this on allocation (and when we check the length of the mbufs in the lro_nomrg case). We can't just adjust the clustersz in the softc, because it's also used to allocate the mbufs and it needs to be the proper size for that. Since we otherwise use the size of the mbuf (or sometimes the smaller size of the received packet) to compute how much we can buffer, this ensures no overflows. The 2 byte adjustment also does not affect how many packets we can receive in the lro_nomrg case. PR: 271288 Sponsored by: Netflix Reviewed by: bryanv Differential Revision: https://reviews.freebsd.org/D43224 (cherry picked from commit 3be59adbb5a2ae7600d46432d3bc82286e507e95)		2024-02-18 21:47:16 -07:00
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if_vtnet.c	vtnet: Adjust for ethernet alignment.	2024-02-18 21:47:16 -07:00
if_vtnetvar.h	sys: Remove $FreeBSD$: two-line .h pattern	2023-08-16 11:54:11 -06:00
virtio_net.h	virtio(4): Fix a typo in a source code comment	2024-01-25 07:43:30 +01:00