diff options
| author | Bryan Venteicher <bryanv@FreeBSD.org> | 2021-01-19 04:55:25 +0000 |
|---|---|---|
| committer | Bryan Venteicher <bryanv@FreeBSD.org> | 2021-01-19 04:55:25 +0000 |
| commit | 177761e4c4673612dd64793a31a90142d9a04e62 (patch) | |
| tree | 5a8f0addcfe86179ffc36424c16e98c4bff6ee79 /sys/dev/virtio | |
| parent | e36a6b1b1f390be3191d51c11bfcf1afbad55c41 (diff) | |
if_vtnet: Set the interface max TSO values
Reviewed by: grehan (mentor)
Differential Revision: https://reviews.freebsd.org/D27917
Diffstat (limited to 'sys/dev/virtio')
| -rw-r--r-- | sys/dev/virtio/network/if_vtnet.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/sys/dev/virtio/network/if_vtnet.c b/sys/dev/virtio/network/if_vtnet.c index 642c513ff0b3..2447f29a8820 100644 --- a/sys/dev/virtio/network/if_vtnet.c +++ b/sys/dev/virtio/network/if_vtnet.c @@ -289,6 +289,11 @@ TUNABLE_INT("hw.vtnet.mq_max_pairs", &vtnet_mq_max_pairs); SYSCTL_INT(_hw_vtnet, OID_AUTO, mq_max_pairs, CTLFLAG_RDTUN, &vtnet_mq_max_pairs, 0, "Sets the maximum number of multiqueue pairs"); +static int vtnet_tso_maxlen = IP_MAXPACKET; +TUNABLE_INT("hw.vtnet.tso_maxlen", &vtnet_tso_maxlen); +SYSCTL_INT(_hw_vtnet, OID_AUTO, tso_maxlen, CTLFLAG_RDTUN, + &vtnet_tso_maxlen, 0, "TSO burst limit"); + static int vtnet_rx_process_limit = 1024; TUNABLE_INT("hw.vtnet.rx_process_limit", &vtnet_rx_process_limit); SYSCTL_INT(_hw_vtnet, OID_AUTO, rx_process_limit, CTLFLAG_RDTUN, @@ -1042,8 +1047,18 @@ vtnet_setup_interface(struct vtnet_softc *sc) if (gso || virtio_with_feature(dev, VIRTIO_NET_F_HOST_ECN)) sc->vtnet_flags |= VTNET_FLAG_TSO_ECN; - if (ifp->if_capabilities & (IFCAP_TSO4 | IFCAP_TSO6)) + if (ifp->if_capabilities & (IFCAP_TSO4 | IFCAP_TSO6)) { + int tso_maxlen; + ifp->if_capabilities |= IFCAP_VLAN_HWTSO; + + tso_maxlen = vtnet_tunable_int(sc, "tso_maxlen", + vtnet_tso_maxlen); + ifp->if_hw_tsomax = tso_maxlen - + (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN); + ifp->if_hw_tsomaxsegcount = sc->vtnet_tx_nsegs - 1; + ifp->if_hw_tsomaxsegsize = PAGE_SIZE; + } } if (virtio_with_feature(dev, VIRTIO_NET_F_GUEST_CSUM)) { |