The branch main has been updated by imp:
URL:
https://cgit.FreeBSD.org/src/commit/?id=9e6d11ce9a51d75ed6a94e180f2fb4e9188a2ba4
commit 9e6d11ce9a51d75ed6a94e180f2fb4e9188a2ba4
Author: Warner Losh <i...@freebsd.org>
AuthorDate: 2023-12-20 19:09:09 +0000
Commit: Warner Losh <i...@freebsd.org>
CommitDate: 2023-12-21 04:16:45 +0000
vtnet: Adjust rx buffer so IP header 32-bit aligned
Call madj(m, ETHER_ALIGN) to offset rx buffers when allocating them.
This improves performance everywhere, and allows armv7 to work at all.
PR: 271288 (PR had a different fix than I wound up with)
MFC After: 3 days
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D43136
---
sys/dev/virtio/network/if_vtnet.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sys/dev/virtio/network/if_vtnet.c
b/sys/dev/virtio/network/if_vtnet.c
index 287af7751066..360176e4f845 100644
--- a/sys/dev/virtio/network/if_vtnet.c
+++ b/sys/dev/virtio/network/if_vtnet.c
@@ -1532,8 +1532,8 @@ vtnet_rx_alloc_buf(struct vtnet_softc *sc, int nbufs,
struct mbuf **m_tailp)
m_freem(m_head);
return (NULL);
}
-
m->m_len = size;
+ m_adj(m, ETHER_ALIGN);
if (m_head != NULL) {
m_tail->m_next = m;
m_tail = m;
