diff options
| -rw-r--r-- | sys/dev/virtio/network/if_vtnet.c | 61 | ||||
| -rw-r--r-- | sys/dev/virtio/network/if_vtnetvar.h | 1 |
2 files changed, 38 insertions, 24 deletions
diff --git a/sys/dev/virtio/network/if_vtnet.c b/sys/dev/virtio/network/if_vtnet.c index 5453998..6c1603a 100644 --- a/sys/dev/virtio/network/if_vtnet.c +++ b/sys/dev/virtio/network/if_vtnet.c @@ -230,18 +230,32 @@ static void vtnet_disable_interrupts(struct vtnet_softc *); static int vtnet_tunable_int(struct vtnet_softc *, const char *, int); /* Tunables. */ +static SYSCTL_NODE(_hw, OID_AUTO, vtnet, CTLFLAG_RD, 0, "VNET driver parameters"); static int vtnet_csum_disable = 0; TUNABLE_INT("hw.vtnet.csum_disable", &vtnet_csum_disable); +SYSCTL_INT(_hw_vtnet, OID_AUTO, csum_disable, CTLFLAG_RDTUN, + &vtnet_csum_disable, 0, "Disables receive and send checksum offload"); static int vtnet_tso_disable = 0; TUNABLE_INT("hw.vtnet.tso_disable", &vtnet_tso_disable); +SYSCTL_INT(_hw_vtnet, OID_AUTO, tso_disable, CTLFLAG_RDTUN, &vtnet_tso_disable, + 0, "Disables TCP Segmentation Offload"); static int vtnet_lro_disable = 0; TUNABLE_INT("hw.vtnet.lro_disable", &vtnet_lro_disable); +SYSCTL_INT(_hw_vtnet, OID_AUTO, lro_disable, CTLFLAG_RDTUN, &vtnet_lro_disable, + 0, "Disables TCP Large Receive Offload"); static int vtnet_mq_disable = 0; TUNABLE_INT("hw.vtnet.mq_disable", &vtnet_mq_disable); -static int vtnet_mq_max_pairs = 0; +SYSCTL_INT(_hw_vtnet, OID_AUTO, mq_disable, CTLFLAG_RDTUN, &vtnet_mq_disable, + 0, "Disables Multi Queue support"); +static int vtnet_mq_max_pairs = VTNET_MAX_QUEUE_PAIRS; 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 Multi Queue pairs"); static int vtnet_rx_process_limit = 512; TUNABLE_INT("hw.vtnet.rx_process_limit", &vtnet_rx_process_limit); +SYSCTL_INT(_hw_vtnet, OID_AUTO, rx_process_limit, CTLFLAG_RDTUN, + &vtnet_rx_process_limit, 0, + "Limits the number RX segments processed in a single pass"); static uma_zone_t vtnet_tx_header_zone; @@ -591,7 +605,6 @@ static void vtnet_setup_features(struct vtnet_softc *sc) { device_t dev; - int max_pairs, max; dev = sc->vtnet_dev; @@ -640,32 +653,31 @@ vtnet_setup_features(struct vtnet_softc *sc) if (virtio_with_feature(dev, VIRTIO_NET_F_MQ) && sc->vtnet_flags & VTNET_FLAG_CTRL_VQ) { - max_pairs = virtio_read_dev_config_2(dev, + sc->vtnet_max_vq_pairs = virtio_read_dev_config_2(dev, offsetof(struct virtio_net_config, max_virtqueue_pairs)); - if (max_pairs < VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN || - max_pairs > VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX) - max_pairs = 1; } else - max_pairs = 1; + sc->vtnet_max_vq_pairs = 1; - if (max_pairs > 1) { + if (sc->vtnet_max_vq_pairs > 1) { /* - * Limit the maximum number of queue pairs to the number of - * CPUs or the configured maximum. The actual number of - * queues that get used may be less. + * Limit the maximum number of queue pairs to the lower of + * the number of CPUs and the configured maximum. + * The actual number of queues that get used may be less. */ + int max; + max = vtnet_tunable_int(sc, "mq_max_pairs", vtnet_mq_max_pairs); - if (max > 0 && max_pairs > max) - max_pairs = max; - if (max_pairs > mp_ncpus) - max_pairs = mp_ncpus; - if (max_pairs > VTNET_MAX_QUEUE_PAIRS) - max_pairs = VTNET_MAX_QUEUE_PAIRS; - if (max_pairs > 1) - sc->vtnet_flags |= VTNET_FLAG_MULTIQ; + if (max > VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN) { + if (max > mp_ncpus) + max = mp_ncpus; + if (max > VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX) + max = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX; + if (max > 1) { + sc->vtnet_requested_vq_pairs = max; + sc->vtnet_flags |= VTNET_FLAG_MULTIQ; + } + } } - - sc->vtnet_max_vq_pairs = max_pairs; } static int @@ -2991,13 +3003,11 @@ vtnet_set_active_vq_pairs(struct vtnet_softc *sc) dev = sc->vtnet_dev; if ((sc->vtnet_flags & VTNET_FLAG_MULTIQ) == 0) { - MPASS(sc->vtnet_max_vq_pairs == 1); sc->vtnet_act_vq_pairs = 1; return; } - /* BMV: Just use the maximum configured for now. */ - npairs = sc->vtnet_max_vq_pairs; + npairs = sc->vtnet_requested_vq_pairs; if (vtnet_ctrl_mq_cmd(sc, npairs) != 0) { device_printf(dev, @@ -3853,6 +3863,9 @@ vtnet_setup_sysctl(struct vtnet_softc *sc) SYSCTL_ADD_INT(ctx, child, OID_AUTO, "max_vq_pairs", CTLFLAG_RD, &sc->vtnet_max_vq_pairs, 0, "Maximum number of supported virtqueue pairs"); + SYSCTL_ADD_INT(ctx, child, OID_AUTO, "requested_vq_pairs", + CTLFLAG_RD, &sc->vtnet_requested_vq_pairs, 0, + "Requested number of virtqueue pairs"); SYSCTL_ADD_INT(ctx, child, OID_AUTO, "act_vq_pairs", CTLFLAG_RD, &sc->vtnet_act_vq_pairs, 0, "Number of active virtqueue pairs"); diff --git a/sys/dev/virtio/network/if_vtnetvar.h b/sys/dev/virtio/network/if_vtnetvar.h index f89f6b1..15436d9 100644 --- a/sys/dev/virtio/network/if_vtnetvar.h +++ b/sys/dev/virtio/network/if_vtnetvar.h @@ -155,6 +155,7 @@ struct vtnet_softc { int vtnet_if_flags; int vtnet_act_vq_pairs; int vtnet_max_vq_pairs; + int vtnet_requested_vq_pairs; struct virtqueue *vtnet_ctrl_vq; struct vtnet_mac_filter *vtnet_mac_filter; |
