diff options
| author | Cheng Cui <cc@FreeBSD.org> | 2026-01-28 17:27:34 +0000 |
|---|---|---|
| committer | Cheng Cui <cc@FreeBSD.org> | 2026-01-28 21:46:07 +0000 |
| commit | 20285cad7a55ecd0020f51f3daee74db8b1ea5a0 (patch) | |
| tree | 8d185c868f5228379041d52b4d7f4fc6166f4940 | |
| parent | 670b568ec1c36464c6d55e400382c290b0391ccf (diff) | |
vtnet: remove M_HASHTYPE when there is only one pair of rx/tx queue
Summary:
Doing so will let the upper layer know how to deal with software hash,
with benefits like inp_flowid can be set and m_pkthdr.flowid can be set
in output path.
Reviewed by: tuexen
Differential Revision: https://reviews.freebsd.org/D54929
| -rw-r--r-- | sys/dev/virtio/network/if_vtnet.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/sys/dev/virtio/network/if_vtnet.c b/sys/dev/virtio/network/if_vtnet.c index 19775416f8d4..da89dea03f87 100644 --- a/sys/dev/virtio/network/if_vtnet.c +++ b/sys/dev/virtio/network/if_vtnet.c @@ -2059,8 +2059,16 @@ vtnet_rxq_input(struct vtnet_rxq *rxq, struct mbuf *m, } } - m->m_pkthdr.flowid = rxq->vtnrx_id; - M_HASHTYPE_SET(m, M_HASHTYPE_OPAQUE); + if (sc->vtnet_act_vq_pairs == 1) { + /* + * When RSS is not needed (one active rx queue), let the upper + * layer know and react. + */ + M_HASHTYPE_CLEAR(m); + } else { + m->m_pkthdr.flowid = rxq->vtnrx_id; + M_HASHTYPE_SET(m, M_HASHTYPE_OPAQUE); + } if (hdr->flags & (VIRTIO_NET_HDR_F_NEEDS_CSUM | VIRTIO_NET_HDR_F_DATA_VALID)) { |