u32 pkt_num;
void *block_start;
block_desc_t bd;
- tpacket3_hdr_t tph;
+ union
+ {
+ tpacket3_hdr_t tph3;
+ tpacket2_hdr_t tph2;
+ };
vnet_virtio_net_hdr_t vnet_hdr;
+ u8 is_v3;
} af_packet_input_trace_t;
static u8 *
s = format (s, "af_packet: hw_if_index %d rx-queue %u next-index %d",
t->hw_if_index, t->queue_id, t->next_index);
- s = format (
- s, "\n%Ublock %u:\n%Uaddress %p version %u seq_num %lu pkt_num %u",
- format_white_space, indent + 2, t->block, format_white_space, indent + 4,
- t->block_start, t->bd.version, t->bd.hdr.bh1.seq_num, t->pkt_num);
- s =
- format (s,
- "\n%Utpacket3_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u"
- "\n%Usec 0x%x nsec 0x%x vlan %U"
+ if (t->is_v3)
+ {
+ s = format (
+ s, "\n%Ublock %u:\n%Uaddress %p version %u seq_num %lu pkt_num %u",
+ format_white_space, indent + 2, t->block, format_white_space,
+ indent + 4, t->block_start, t->bd.version, t->bd.hdr.bh1.seq_num,
+ t->pkt_num);
+ s = format (
+ s,
+ "\n%Utpacket3_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u"
+ "\n%Usec 0x%x nsec 0x%x vlan %U"
#ifdef TP_STATUS_VLAN_TPID_VALID
- " vlan_tpid %u"
+ " vlan_tpid %u"
#endif
- ,
- format_white_space, indent + 2, format_white_space, indent + 4,
- t->tph.tp_status, t->tph.tp_len, t->tph.tp_snaplen, t->tph.tp_mac,
- t->tph.tp_net, format_white_space, indent + 4, t->tph.tp_sec,
- t->tph.tp_nsec, format_ethernet_vlan_tci, t->tph.hv1.tp_vlan_tci
+ ,
+ format_white_space, indent + 2, format_white_space, indent + 4,
+ t->tph3.tp_status, t->tph3.tp_len, t->tph3.tp_snaplen, t->tph3.tp_mac,
+ t->tph3.tp_net, format_white_space, indent + 4, t->tph3.tp_sec,
+ t->tph3.tp_nsec, format_ethernet_vlan_tci, t->tph3.hv1.tp_vlan_tci
#ifdef TP_STATUS_VLAN_TPID_VALID
- ,
- t->tph.hv1.tp_vlan_tpid
+ ,
+ t->tph3.hv1.tp_vlan_tpid
#endif
- );
+ );
+ }
+ else
+ {
+ s = format (
+ s,
+ "\n%Utpacket2_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u"
+ "\n%Usec 0x%x nsec 0x%x vlan %U"
+#ifdef TP_STATUS_VLAN_TPID_VALID
+ " vlan_tpid %u"
+#endif
+ ,
+ format_white_space, indent + 2, format_white_space, indent + 4,
+ t->tph2.tp_status, t->tph2.tp_len, t->tph2.tp_snaplen, t->tph2.tp_mac,
+ t->tph2.tp_net, format_white_space, indent + 4, t->tph2.tp_sec,
+ t->tph2.tp_nsec, format_ethernet_vlan_tci, t->tph2.tp_vlan_tci
+#ifdef TP_STATUS_VLAN_TPID_VALID
+ ,
+ t->tph2.tp_vlan_tpid
+#endif
+ );
+ }
s = format (s,
"\n%Uvnet-hdr:\n%Uflags 0x%02x gso_type 0x%02x hdr_len %u"
}
always_inline uword
-af_packet_device_input_fn (vlib_main_t *vm, vlib_node_runtime_t *node,
- vlib_frame_t *frame, af_packet_if_t *apif,
- u16 queue_id, u8 is_cksum_gso_enabled)
+af_packet_v3_device_input_fn (vlib_main_t *vm, vlib_node_runtime_t *node,
+ vlib_frame_t *frame, af_packet_if_t *apif,
+ u16 queue_id, u8 is_cksum_gso_enabled)
{
af_packet_main_t *apm = &af_packet_main;
af_packet_queue_t *rx_queue = vec_elt_at_index (apif->rx_queues, queue_id);
u32 total = 0;
u32 *to_next = 0;
u32 block = rx_queue->next_rx_block;
- u32 block_nr = rx_queue->rx_req->tp_block_nr;
+ u32 block_nr = rx_queue->rx_req->req3.tp_block_nr;
u8 *block_start = 0;
uword n_trace = vlib_get_trace_count (vm, node);
u32 thread_index = vm->thread_index;
u32 n_buffer_bytes = vlib_buffer_get_default_data_size (vm);
- u32 min_bufs = rx_queue->rx_req->tp_frame_size / n_buffer_bytes;
+ u32 min_bufs = rx_queue->rx_req->req3.tp_frame_size / n_buffer_bytes;
u32 num_pkts = 0;
u32 rx_frame_offset = 0;
block_desc_t *bd = 0;
af_packet_input_trace_t *tr;
vlib_set_trace_count (vm, node, --n_trace);
tr = vlib_add_trace (vm, node, first_b0, sizeof (*tr));
+ tr->is_v3 = 1;
tr->next_index = next0;
tr->hw_if_index = apif->hw_if_index;
tr->queue_id = queue_id;
tr->block_start = bd;
tr->pkt_num = bd->hdr.bh1.num_pkts - num_pkts;
clib_memcpy_fast (&tr->bd, bd, sizeof (block_desc_t));
- clib_memcpy_fast (&tr->tph, tph, sizeof (tpacket3_hdr_t));
+ clib_memcpy_fast (&tr->tph3, tph, sizeof (tpacket3_hdr_t));
if (is_cksum_gso_enabled)
clib_memcpy_fast (&tr->vnet_hdr, vnet_hdr,
sizeof (vnet_virtio_net_hdr_t));
return n_rx_packets;
}
+always_inline uword
+af_packet_v2_device_input_fn (vlib_main_t *vm, vlib_node_runtime_t *node,
+ vlib_frame_t *frame, af_packet_if_t *apif,
+ u16 queue_id, u8 is_cksum_gso_enabled)
+{
+ af_packet_main_t *apm = &af_packet_main;
+ af_packet_queue_t *rx_queue = vec_elt_at_index (apif->rx_queues, queue_id);
+ tpacket2_hdr_t *tph;
+ u32 next_index;
+ u32 block = 0;
+ u32 rx_frame;
+ u32 n_free_bufs;
+ u32 n_rx_packets = 0;
+ u32 n_rx_bytes = 0;
+ u32 *to_next = 0;
+ u32 frame_size = rx_queue->rx_req->req.tp_frame_size;
+ u32 frame_num = rx_queue->rx_req->req.tp_frame_nr;
+ u8 *block_start = rx_queue->rx_ring[block];
+ uword n_trace = vlib_get_trace_count (vm, node);
+ u32 thread_index = vm->thread_index;
+ u32 n_buffer_bytes = vlib_buffer_get_default_data_size (vm);
+ u32 min_bufs = rx_queue->rx_req->req.tp_frame_size / n_buffer_bytes;
+ u8 is_ip = (apif->mode == AF_PACKET_IF_MODE_IP);
+ vlib_buffer_t bt = {};
+
+ if (is_ip)
+ {
+ next_index = VNET_DEVICE_INPUT_NEXT_IP4_INPUT;
+ }
+ else
+ {
+ next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
+ if (PREDICT_FALSE (apif->per_interface_next_index != ~0))
+ next_index = apif->per_interface_next_index;
+
+ /* redirect if feature path enabled */
+ vnet_feature_start_device_input_x1 (apif->sw_if_index, &next_index, &bt);
+ }
+
+ n_free_bufs = vec_len (apm->rx_buffers[thread_index]);
+ if (PREDICT_FALSE (n_free_bufs < VLIB_FRAME_SIZE))
+ {
+ vec_validate (apm->rx_buffers[thread_index],
+ VLIB_FRAME_SIZE + n_free_bufs - 1);
+ n_free_bufs += vlib_buffer_alloc (
+ vm, &apm->rx_buffers[thread_index][n_free_bufs], VLIB_FRAME_SIZE);
+ vec_set_len (apm->rx_buffers[thread_index], n_free_bufs);
+ }
+
+ rx_frame = rx_queue->next_rx_frame;
+ tph = (tpacket2_hdr_t *) (block_start + rx_frame * frame_size);
+ while ((tph->tp_status & TP_STATUS_USER) && (n_free_bufs > min_bufs))
+ {
+ vlib_buffer_t *b0 = 0, *first_b0 = 0, *prev_b0 = 0;
+ u32 next0 = next_index;
+
+ u32 n_left_to_next;
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+ while ((tph->tp_status & TP_STATUS_USER) && (n_free_bufs > min_bufs) &&
+ n_left_to_next)
+ {
+ vnet_virtio_net_hdr_t *vnet_hdr = 0;
+ u32 data_len = tph->tp_snaplen;
+ u32 offset = 0;
+ u32 bi0 = 0, first_bi0 = 0;
+ u8 l4_hdr_sz = 0;
+
+ if (is_cksum_gso_enabled)
+ vnet_hdr =
+ (vnet_virtio_net_hdr_t *) ((u8 *) tph + tph->tp_mac -
+ sizeof (vnet_virtio_net_hdr_t));
+ while (data_len)
+ {
+ /* grab free buffer */
+ u32 last_empty_buffer =
+ vec_len (apm->rx_buffers[thread_index]) - 1;
+ bi0 = apm->rx_buffers[thread_index][last_empty_buffer];
+ b0 = vlib_get_buffer (vm, bi0);
+ vec_set_len (apm->rx_buffers[thread_index], last_empty_buffer);
+ n_free_bufs--;
+
+ /* copy data */
+ u32 bytes_to_copy =
+ data_len > n_buffer_bytes ? n_buffer_bytes : data_len;
+ u32 vlan_len = 0;
+ u32 bytes_copied = 0;
+ b0->current_data = 0;
+ /* Kernel removes VLAN headers, so reconstruct VLAN */
+ if (PREDICT_FALSE (tph->tp_status & TP_STATUS_VLAN_VALID))
+ {
+ if (PREDICT_TRUE (offset == 0))
+ {
+ clib_memcpy_fast (vlib_buffer_get_current (b0),
+ (u8 *) tph + tph->tp_mac,
+ sizeof (ethernet_header_t));
+ ethernet_header_t *eth = vlib_buffer_get_current (b0);
+ ethernet_vlan_header_t *vlan =
+ (ethernet_vlan_header_t *) (eth + 1);
+ vlan->priority_cfi_and_id =
+ clib_host_to_net_u16 (tph->tp_vlan_tci);
+ vlan->type = eth->type;
+ eth->type = clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
+ vlan_len = sizeof (ethernet_vlan_header_t);
+ bytes_copied = sizeof (ethernet_header_t);
+ }
+ }
+ clib_memcpy_fast (((u8 *) vlib_buffer_get_current (b0)) +
+ bytes_copied + vlan_len,
+ (u8 *) tph + tph->tp_mac + offset +
+ bytes_copied,
+ (bytes_to_copy - bytes_copied));
+
+ /* fill buffer header */
+ b0->current_length = bytes_to_copy + vlan_len;
+
+ if (offset == 0)
+ {
+ b0->total_length_not_including_first_buffer = 0;
+ b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID;
+ vnet_buffer (b0)->sw_if_index[VLIB_RX] = apif->sw_if_index;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~0;
+ first_bi0 = bi0;
+ first_b0 = vlib_get_buffer (vm, first_bi0);
+
+ if (is_cksum_gso_enabled)
+ {
+ if (vnet_hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM)
+ fill_cksum_offload (first_b0, &l4_hdr_sz, is_ip);
+ if (vnet_hdr->gso_type & (VIRTIO_NET_HDR_GSO_TCPV4 |
+ VIRTIO_NET_HDR_GSO_TCPV6))
+ fill_gso_offload (first_b0, vnet_hdr->gso_size,
+ l4_hdr_sz);
+ }
+ }
+ else
+ buffer_add_to_chain (b0, first_b0, prev_b0, bi0);
+
+ prev_b0 = b0;
+ offset += bytes_to_copy;
+ data_len -= bytes_to_copy;
+ }
+ n_rx_packets++;
+ n_rx_bytes += tph->tp_snaplen;
+ to_next[0] = first_bi0;
+ to_next += 1;
+ n_left_to_next--;
+
+ /* drop partial packets */
+ if (PREDICT_FALSE (tph->tp_len != tph->tp_snaplen))
+ {
+ next0 = VNET_DEVICE_INPUT_NEXT_DROP;
+ first_b0->error =
+ node->errors[AF_PACKET_INPUT_ERROR_PARTIAL_PKT];
+ }
+ else
+ {
+ if (PREDICT_FALSE (is_ip))
+ {
+ switch (first_b0->data[0] & 0xf0)
+ {
+ case 0x40:
+ next0 = VNET_DEVICE_INPUT_NEXT_IP4_INPUT;
+ break;
+ case 0x60:
+ next0 = VNET_DEVICE_INPUT_NEXT_IP6_INPUT;
+ break;
+ default:
+ next0 = VNET_DEVICE_INPUT_NEXT_DROP;
+ break;
+ }
+ if (PREDICT_FALSE (apif->per_interface_next_index != ~0))
+ next0 = apif->per_interface_next_index;
+ }
+ else
+ {
+ /* copy feature arc data from template */
+ first_b0->current_config_index = bt.current_config_index;
+ vnet_buffer (first_b0)->feature_arc_index =
+ vnet_buffer (&bt)->feature_arc_index;
+ }
+ }
+
+ /* trace */
+ if (PREDICT_FALSE (n_trace > 0 &&
+ vlib_trace_buffer (vm, node, next0, first_b0,
+ /* follow_chain */ 0)))
+ {
+ af_packet_input_trace_t *tr;
+ vlib_set_trace_count (vm, node, --n_trace);
+ tr = vlib_add_trace (vm, node, first_b0, sizeof (*tr));
+ tr->is_v3 = 0;
+ tr->next_index = next0;
+ tr->hw_if_index = apif->hw_if_index;
+ tr->queue_id = queue_id;
+ clib_memcpy_fast (&tr->tph2, tph, sizeof (struct tpacket2_hdr));
+ if (is_cksum_gso_enabled)
+ clib_memcpy_fast (&tr->vnet_hdr, vnet_hdr,
+ sizeof (vnet_virtio_net_hdr_t));
+ else
+ clib_memset_u8 (&tr->vnet_hdr, 0,
+ sizeof (vnet_virtio_net_hdr_t));
+ }
+
+ /* enque and take next packet */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, first_bi0, next0);
+
+ /* next packet */
+ tph->tp_status = TP_STATUS_KERNEL;
+ rx_frame = (rx_frame + 1) % frame_num;
+ tph = (struct tpacket2_hdr *) (block_start + rx_frame * frame_size);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ rx_queue->next_rx_frame = rx_frame;
+
+ vlib_increment_combined_counter (
+ vnet_get_main ()->interface_main.combined_sw_if_counters +
+ VNET_INTERFACE_COUNTER_RX,
+ vlib_get_thread_index (), apif->hw_if_index, n_rx_packets, n_rx_bytes);
+
+ vnet_device_increment_rx_packets (thread_index, n_rx_packets);
+ return n_rx_packets;
+}
+
+always_inline uword
+af_packet_device_input_fn (vlib_main_t *vm, vlib_node_runtime_t *node,
+ vlib_frame_t *frame, af_packet_if_t *apif,
+ u16 queue_id, u8 is_cksum_gso_enabled)
+
+{
+ if (apif->version == TPACKET_V3)
+ return af_packet_v3_device_input_fn (vm, node, frame, apif, queue_id,
+ is_cksum_gso_enabled);
+ else
+ return af_packet_v2_device_input_fn (vm, node, frame, apif, queue_id,
+ is_cksum_gso_enabled);
+}
+
VLIB_NODE_FN (af_packet_input_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
Code Review / vpp.git / blobdiff