X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fdevices%2Fvirtio%2Fnode.c;h=d31fb144b8f6e0dd0d0d5deb0694c0baa527f599;hb=6d4af8918;hp=6b82c418ffb38d9beffb746fd48c3a36dc060325;hpb=8934a04596d1421c35b194949b2027ca1fe71aef;p=vpp.git diff --git a/src/vnet/devices/virtio/node.c b/src/vnet/devices/virtio/node.c index 6b82c418ffb..d31fb144b8f 100644 --- a/src/vnet/devices/virtio/node.c +++ b/src/vnet/devices/virtio/node.c @@ -30,6 +30,7 @@ #include #include #include +#include #include @@ -140,14 +141,113 @@ more: goto more; } +static_always_inline void +virtio_needs_csum (vlib_buffer_t * b0, struct virtio_net_hdr_v1 *hdr, + u8 * l4_proto, u8 * l4_hdr_sz) +{ + *l4_proto = 0; + *l4_hdr_sz = 0; + + if (hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) + + { + ethernet_header_t *eh = + (ethernet_header_t *) vlib_buffer_get_current (b0); + u16 ethertype = clib_net_to_host_u16 (eh->type); + u16 l2hdr_sz = sizeof (ethernet_header_t); + + if (ethernet_frame_is_tagged (ethertype)) + { + ethernet_vlan_header_t *vlan = (ethernet_vlan_header_t *) (eh + 1); + + ethertype = clib_net_to_host_u16 (vlan->type); + l2hdr_sz += sizeof (*vlan); + if (ethertype == ETHERNET_TYPE_VLAN) + { + vlan++; + ethertype = clib_net_to_host_u16 (vlan->type); + l2hdr_sz += sizeof (*vlan); + } + } + + vnet_buffer (b0)->l2_hdr_offset = 0; + vnet_buffer (b0)->l3_hdr_offset = l2hdr_sz; + if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP4)) + { + ip4_header_t *ip4 = + (ip4_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz); + vnet_buffer (b0)->l4_hdr_offset = l2hdr_sz + ip4_header_bytes (ip4); + *l4_proto = ip4->protocol; + b0->flags |= + (VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_OFFLOAD_IP_CKSUM); + b0->flags |= + (VNET_BUFFER_F_L2_HDR_OFFSET_VALID + | VNET_BUFFER_F_L3_HDR_OFFSET_VALID | + VNET_BUFFER_F_L4_HDR_OFFSET_VALID); + } + else if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP6)) + { + ip6_header_t *ip6 = + (ip6_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz); + vnet_buffer (b0)->l4_hdr_offset = l2hdr_sz + sizeof (ip6_header_t); + /* FIXME IPv6 EH traversal */ + *l4_proto = ip6->protocol; + b0->flags |= (VNET_BUFFER_F_IS_IP6 | + VNET_BUFFER_F_L2_HDR_OFFSET_VALID + | VNET_BUFFER_F_L3_HDR_OFFSET_VALID | + VNET_BUFFER_F_L4_HDR_OFFSET_VALID); + } + if (*l4_proto == IP_PROTOCOL_TCP) + { + b0->flags |= VNET_BUFFER_F_OFFLOAD_TCP_CKSUM; + tcp_header_t *tcp = (tcp_header_t *) (vlib_buffer_get_current (b0) + + vnet_buffer + (b0)->l4_hdr_offset); + *l4_hdr_sz = tcp_header_bytes (tcp); + tcp->checksum = 0; + } + else if (*l4_proto == IP_PROTOCOL_UDP) + { + b0->flags |= VNET_BUFFER_F_OFFLOAD_UDP_CKSUM; + udp_header_t *udp = (udp_header_t *) (vlib_buffer_get_current (b0) + + vnet_buffer + (b0)->l4_hdr_offset); + *l4_hdr_sz = sizeof (*udp); + udp->checksum = 0; + } + } + +} + +static_always_inline void +fill_gso_buffer_flags (vlib_buffer_t * b0, struct virtio_net_hdr_v1 *hdr, + u8 l4_proto, u8 l4_hdr_sz) +{ + if (hdr->gso_type == VIRTIO_NET_HDR_GSO_TCPV4) + { + ASSERT (hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM); + vnet_buffer2 (b0)->gso_size = hdr->gso_size; + vnet_buffer2 (b0)->gso_l4_hdr_sz = l4_hdr_sz; + b0->flags |= VNET_BUFFER_F_GSO | VNET_BUFFER_F_IS_IP4; + } + if (hdr->gso_type == VIRTIO_NET_HDR_GSO_TCPV6) + { + ASSERT (hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM); + vnet_buffer2 (b0)->gso_size = hdr->gso_size; + vnet_buffer2 (b0)->gso_l4_hdr_sz = l4_hdr_sz; + b0->flags |= VNET_BUFFER_F_GSO | VNET_BUFFER_F_IS_IP6; + } +} + static_always_inline uword virtio_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * frame, virtio_if_t * vif, u16 qid) + vlib_frame_t * frame, virtio_if_t * vif, u16 qid, + int gso_enabled, int checksum_offload_enabled) { vnet_main_t *vnm = vnet_get_main (); u32 thread_index = vm->thread_index; uword n_trace = vlib_get_trace_count (vm, node); - virtio_vring_t *vring = vec_elt_at_index (vif->vrings, 0); + virtio_vring_t *vring = vec_elt_at_index (vif->rxq_vrings, qid); u32 next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT; const int hdr_sz = vif->virtio_net_hdr_sz; u32 *to_next = 0; @@ -172,6 +272,7 @@ virtio_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, while (n_left && n_left_to_next) { + u8 l4_proto, l4_hdr_sz; u16 num_buffers = 1; struct vring_used_elem *e = &vring->used->ring[last & mask]; struct virtio_net_hdr_v1 *hdr; @@ -187,6 +288,13 @@ virtio_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, b0->current_length = len; b0->total_length_not_including_first_buffer = 0; b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID; + + if (checksum_offload_enabled) + virtio_needs_csum (b0, hdr, &l4_proto, &l4_hdr_sz); + + if (gso_enabled) + fill_gso_buffer_flags (b0, hdr, l4_proto, l4_hdr_sz); + vnet_buffer (b0)->sw_if_index[VLIB_RX] = vif->sw_if_index; vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; @@ -221,9 +329,10 @@ virtio_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, if (PREDICT_FALSE (vif->per_interface_next_index != ~0)) next0 = vif->per_interface_next_index; - else - /* redirect if feature path enabled */ - vnet_feature_start_device_input_x1 (vif->sw_if_index, &next0, b0); + + /* redirect if feature path enabled */ + vnet_feature_start_device_input_x1 (vif->sw_if_index, &next0, b0); + /* trace */ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); @@ -231,12 +340,12 @@ virtio_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, { virtio_input_trace_t *tr; vlib_trace_buffer (vm, node, next0, b0, - /* follow_chain */ 0); + /* follow_chain */ 1); vlib_set_trace_count (vm, node, --n_trace); tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); tr->next_index = next0; tr->hw_if_index = vif->hw_if_index; - tr->len = len; + tr->len = len + b0->total_length_not_including_first_buffer; clib_memcpy_fast (&tr->hdr, hdr, hdr_sz); } @@ -254,7 +363,7 @@ virtio_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, /* next packet */ n_rx_packets++; - n_rx_bytes += len; + n_rx_bytes += (len + b0->total_length_not_including_first_buffer); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } @@ -262,7 +371,7 @@ virtio_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_increment_combined_counter (vnm->interface_main.combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX, thread_index, - vif->hw_if_index, n_rx_packets, + vif->sw_if_index, n_rx_packets, n_rx_bytes); refill: @@ -271,9 +380,9 @@ refill: return n_rx_packets; } -static uword -virtio_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * frame) +VLIB_NODE_FN (virtio_input_node) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) { u32 n_rx = 0; virtio_main_t *nm = &virtio_main; @@ -282,12 +391,19 @@ virtio_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node, foreach_device_and_queue (dq, rt->devices_and_queues) { - virtio_if_t *mif; - mif = vec_elt_at_index (nm->interfaces, dq->dev_instance); - if (mif->flags & VIRTIO_IF_FLAG_ADMIN_UP) + virtio_if_t *vif; + vif = vec_elt_at_index (nm->interfaces, dq->dev_instance); + if (vif->flags & VIRTIO_IF_FLAG_ADMIN_UP) { - n_rx += virtio_device_input_inline (vm, node, frame, mif, - dq->queue_id); + if (vif->gso_enabled) + n_rx += virtio_device_input_inline (vm, node, frame, vif, + dq->queue_id, 1, 1); + else if (vif->csum_offload_enabled) + n_rx += virtio_device_input_inline (vm, node, frame, vif, + dq->queue_id, 0, 1); + else + n_rx += virtio_device_input_inline (vm, node, frame, vif, + dq->queue_id, 0, 0); } } @@ -296,17 +412,15 @@ virtio_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node, /* *INDENT-OFF* */ VLIB_REGISTER_NODE (virtio_input_node) = { - .function = virtio_input_fn, .name = "virtio-input", .sibling_of = "device-input", .format_trace = format_virtio_input_trace, + .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED, .type = VLIB_NODE_TYPE_INPUT, .state = VLIB_NODE_STATE_INTERRUPT, .n_errors = VIRTIO_INPUT_N_ERROR, .error_strings = virtio_input_error_strings, }; - -VLIB_NODE_FUNCTION_MULTIARCH (virtio_input_node, virtio_input_fn) /* *INDENT-ON* */ /*