-/*------------------------------------------------------------------
+/*
+ *------------------------------------------------------------------
* af_packet.c - linux kernel packet interface
*
* Copyright (c) 2016 Cisco and/or its affiliates.
*/
#include <linux/if_packet.h>
-#include <linux/virtio_net.h>
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vnet/ip/ip.h>
#include <vnet/ethernet/ethernet.h>
-#include <vnet/devices/devices.h>
+#include <vnet/interface/rx_queue_funcs.h>
#include <vnet/feature/feature.h>
+#include <vnet/ethernet/packet.h>
#include <vnet/devices/af_packet/af_packet.h>
+#include <vnet/devices/virtio/virtio_std.h>
-#define foreach_af_packet_input_error
-
+#define foreach_af_packet_input_error \
+ _ (PARTIAL_PKT, "partial packet") \
+ _ (TIMEDOUT_BLK, "timed out block") \
+ _ (TOTAL_RECV_BLK, "total received block")
typedef enum
{
#define _(f,s) AF_PACKET_INPUT_ERROR_##f,
{
u32 next_index;
u32 hw_if_index;
+ u16 queue_id;
int block;
- struct tpacket2_hdr tph;
+ u32 pkt_num;
+ void *block_start;
+ block_desc_t bd;
+ tpacket3_hdr_t tph;
+ vnet_virtio_net_hdr_t vnet_hdr;
} af_packet_input_trace_t;
static u8 *
af_packet_input_trace_t *t = va_arg (*args, af_packet_input_trace_t *);
u32 indent = format_get_indent (s);
- s = format (s, "af_packet: hw_if_index %d next-index %d",
- t->hw_if_index, t->next_index);
+ 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%Utpacket2_hdr:\n%Ustatus 0x%x len %u snaplen %u mac %u net %u"
+ "\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"
#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.tp_vlan_tci
+ 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
#ifdef TP_STATUS_VLAN_TPID_VALID
- , t->tph.tp_vlan_tpid
+ ,
+ t->tph.hv1.tp_vlan_tpid
#endif
);
+
+ s = format (s,
+ "\n%Uvnet-hdr:\n%Uflags 0x%02x gso_type 0x%02x hdr_len %u"
+ "\n%Ugso_size %u csum_start %u csum_offset %u",
+ format_white_space, indent + 2, format_white_space, indent + 4,
+ t->vnet_hdr.flags, t->vnet_hdr.gso_type, t->vnet_hdr.hdr_len,
+ format_white_space, indent + 4, t->vnet_hdr.gso_size,
+ t->vnet_hdr.csum_start, t->vnet_hdr.csum_offset);
return s;
}
always_inline void
-buffer_add_to_chain (vlib_main_t * vm, u32 bi, u32 first_bi, u32 prev_bi)
+buffer_add_to_chain (vlib_buffer_t *b, vlib_buffer_t *first_b,
+ vlib_buffer_t *prev_b, u32 bi)
{
- vlib_buffer_t *b = vlib_get_buffer (vm, bi);
- vlib_buffer_t *first_b = vlib_get_buffer (vm, first_bi);
- vlib_buffer_t *prev_b = vlib_get_buffer (vm, prev_bi);
-
/* update first buffer */
first_b->total_length_not_including_first_buffer += b->current_length;
prev_b->flags |= VLIB_BUFFER_NEXT_PRESENT;
/* update current buffer */
- b->next_buffer = 0;
+ b->next_buffer = ~0;
+}
+
+static_always_inline void
+fill_gso_offload (vlib_buffer_t *b, u32 gso_size, u8 l4_hdr_sz)
+{
+ b->flags |= VNET_BUFFER_F_GSO;
+ vnet_buffer2 (b)->gso_size = gso_size;
+ vnet_buffer2 (b)->gso_l4_hdr_sz = l4_hdr_sz;
+}
+
+static_always_inline void
+fill_cksum_offload (vlib_buffer_t *b, u8 *l4_hdr_sz, u8 is_ip)
+{
+ vnet_buffer_oflags_t oflags = 0;
+ u16 l2hdr_sz = 0;
+ u16 ethertype = 0;
+ u8 l4_proto = 0;
+
+ if (is_ip)
+ {
+ switch (b->data[0] & 0xf0)
+ {
+ case 0x40:
+ ethertype = ETHERNET_TYPE_IP4;
+ break;
+ case 0x60:
+ ethertype = ETHERNET_TYPE_IP6;
+ break;
+ }
+ }
+ else
+ {
+ ethernet_header_t *eth = vlib_buffer_get_current (b);
+ ethertype = clib_net_to_host_u16 (eth->type);
+ l2hdr_sz = sizeof (ethernet_header_t);
+ if (ethernet_frame_is_tagged (ethertype))
+ {
+ ethernet_vlan_header_t *vlan = (ethernet_vlan_header_t *) (eth + 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 (b)->l2_hdr_offset = 0;
+ vnet_buffer (b)->l3_hdr_offset = l2hdr_sz;
+
+ if (ethertype == ETHERNET_TYPE_IP4)
+ {
+ ip4_header_t *ip4 = (vlib_buffer_get_current (b) + l2hdr_sz);
+ vnet_buffer (b)->l4_hdr_offset = l2hdr_sz + ip4_header_bytes (ip4);
+ b->flags |= (VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
+ VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
+ VNET_BUFFER_F_L4_HDR_OFFSET_VALID);
+
+ l4_proto = ip4->protocol;
+ }
+ else if (ethertype == ETHERNET_TYPE_IP6)
+ {
+ ip6_header_t *ip6 = (vlib_buffer_get_current (b) + l2hdr_sz);
+ b->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);
+ u16 ip6_hdr_len = sizeof (ip6_header_t);
+
+ if (ip6_ext_hdr (ip6->protocol))
+ {
+ ip6_ext_header_t *p = (void *) (ip6 + 1);
+ ip6_hdr_len += ip6_ext_header_len (p);
+ while (ip6_ext_hdr (p->next_hdr))
+ {
+ ip6_hdr_len += ip6_ext_header_len (p);
+ p = ip6_ext_next_header (p);
+ }
+ l4_proto = p->next_hdr;
+ }
+ else
+ l4_proto = ip6->protocol;
+ vnet_buffer (b)->l4_hdr_offset = l2hdr_sz + ip6_hdr_len;
+ }
+
+ if (l4_proto == IP_PROTOCOL_TCP)
+ {
+ oflags |= VNET_BUFFER_OFFLOAD_F_TCP_CKSUM;
+ tcp_header_t *tcp = (tcp_header_t *) (vlib_buffer_get_current (b) +
+ vnet_buffer (b)->l4_hdr_offset);
+ *l4_hdr_sz = tcp_header_bytes (tcp);
+ }
+ else if (l4_proto == IP_PROTOCOL_UDP)
+ {
+ oflags |= VNET_BUFFER_OFFLOAD_F_UDP_CKSUM;
+ *l4_hdr_sz = sizeof (udp_header_t);
+ }
+
+ if (oflags)
+ vnet_buffer_offload_flags_set (b, oflags);
}
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)
+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_main_t *apm = &af_packet_main;
- struct tpacket2_hdr *tph;
- u32 next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
- u32 block = 0;
- u32 rx_frame;
+ af_packet_queue_t *rx_queue = vec_elt_at_index (apif->rx_queues, queue_id);
+ tpacket3_hdr_t *tph;
+ u32 next_index;
u32 n_free_bufs;
u32 n_rx_packets = 0;
u32 n_rx_bytes = 0;
+ u32 timedout_blk = 0;
+ u32 total = 0;
u32 *to_next = 0;
- u32 block_size = apif->rx_req->tp_block_size;
- u32 frame_size = apif->rx_req->tp_frame_size;
- u32 frame_num = apif->rx_req->tp_frame_nr;
- u8 *block_start = apif->rx_ring + block * block_size;
+ u32 block = rx_queue->next_rx_block;
+ u32 block_nr = rx_queue->rx_req->tp_block_nr;
+ u8 *block_start = 0;
uword n_trace = vlib_get_trace_count (vm, node);
- u32 thread_index = vlib_get_thread_index ();
- u32 n_buffer_bytes = vlib_buffer_free_list_buffer_size (vm,
- VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
- u32 min_bufs = apif->rx_req->tp_frame_size / n_buffer_bytes;
-
- if (apif->per_interface_next_index != ~0)
- next_index = apif->per_interface_next_index;
-
- n_free_bufs = vec_len (apm->rx_buffers[thread_index]);
- if (PREDICT_FALSE (n_free_bufs < VLIB_FRAME_SIZE))
+ 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 num_pkts = 0;
+ u32 rx_frame_offset = 0;
+ block_desc_t *bd = 0;
+ vlib_buffer_t bt;
+ u8 is_ip = (apif->mode == AF_PACKET_IF_MODE_IP);
+
+ if (is_ip)
+ next_index = VNET_DEVICE_INPUT_NEXT_IP4_INPUT;
+ else
{
- 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_len (apm->rx_buffers[thread_index]) = n_free_bufs;
+ 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);
}
- rx_frame = apif->next_rx_frame;
- tph = (struct tpacket2_hdr *) (block_start + rx_frame * frame_size);
- while ((tph->tp_status & TP_STATUS_USER) && (n_free_bufs > min_bufs))
+ if ((((block_desc_t *) (block_start = rx_queue->rx_ring[block]))
+ ->hdr.bh1.block_status &
+ TP_STATUS_USER) != 0)
{
- vlib_buffer_t *b0 = 0, *first_b0 = 0;
- u32 next0 = next_index;
+ u32 n_required = 0;
+ bd = (block_desc_t *) block_start;
+
+ total++;
+
+ if (TP_STATUS_BLK_TMO & bd->hdr.bh1.block_status)
+ timedout_blk++;
- 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)
+ if (PREDICT_FALSE (rx_queue->is_rx_pending))
{
+ num_pkts = rx_queue->num_rx_pkts;
+ rx_frame_offset = rx_queue->rx_frame_offset;
+ rx_queue->is_rx_pending = 0;
+ }
+ else
+ {
+ num_pkts = bd->hdr.bh1.num_pkts;
+ rx_frame_offset = sizeof (block_desc_t);
+ }
+
+ n_required = clib_max (num_pkts, VLIB_FRAME_SIZE);
+ n_free_bufs = vec_len (apm->rx_buffers[thread_index]);
+ if (PREDICT_FALSE (n_free_bufs < n_required))
+ {
+ vec_validate (apm->rx_buffers[thread_index],
+ n_required + n_free_bufs - 1);
+ n_free_bufs += vlib_buffer_alloc (
+ vm, &apm->rx_buffers[thread_index][n_free_bufs], n_required);
+ _vec_len (apm->rx_buffers[thread_index]) = n_free_bufs;
+ }
- struct virtio_net_hdr *vh =
- (struct virtio_net_hdr *) (((u8 *) tph) + tph->tp_mac -
- sizeof (struct virtio_net_hdr));
- u32 data_len = tph->tp_snaplen;
- u32 offset = 0;
- u32 bi0 = 0, first_bi0 = 0, prev_bi0;
- u32 vlan_len = 0;
- ip_csum_t wsum = 0;
- u16 *wsum_addr = NULL;
- u32 do_vnet = apm->flags & AF_PACKET_USES_VNET_HEADERS;
- u32 do_csum = tph->tp_status & TP_STATUS_CSUMNOTREADY;
-
- while (data_len)
+ while (num_pkts && (n_free_bufs >= min_bufs))
+ {
+ u32 next0 = next_index;
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (num_pkts && n_left_to_next && (n_free_bufs >= min_bufs))
{
- /* grab free buffer */
- u32 last_empty_buffer =
- vec_len (apm->rx_buffers[thread_index]) - 1;
- prev_bi0 = bi0;
- bi0 = apm->rx_buffers[thread_index][last_empty_buffer];
- b0 = vlib_get_buffer (vm, bi0);
- _vec_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 bytes_copied = 0;
- b0->current_data = 0;
- /* Kernel removes VLAN headers, so reconstruct VLAN */
- if (PREDICT_FALSE (tph->tp_status & TP_STATUS_VLAN_VALID))
+ tph = (tpacket3_hdr_t *) (block_start + rx_frame_offset);
+
+ if (num_pkts > 1)
+ CLIB_PREFETCH (block_start + rx_frame_offset +
+ tph->tp_next_offset,
+ 2 * CLIB_CACHE_LINE_BYTES, LOAD);
+
+ vlib_buffer_t *b0 = 0, *first_b0 = 0, *prev_b0 = 0;
+ 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));
+
+ // save current state and return
+ if (PREDICT_FALSE (((data_len / n_buffer_bytes) + 1) >
+ vec_len (apm->rx_buffers[thread_index])))
{
- if (PREDICT_TRUE (offset == 0))
- {
- clib_memcpy (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);
- }
+ rx_queue->rx_frame_offset = rx_frame_offset;
+ rx_queue->num_rx_pkts = num_pkts;
+ rx_queue->is_rx_pending = 1;
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ goto done;
}
- /* Check if the incoming skb is marked as CSUM_PARTIAL,
- * If VNET Headers are enabled TP_STATUS_CSUMNOTREADY is
- * equivalent to the vnet csum flag.
- **/
- if (PREDICT_TRUE ((do_vnet != 0) && (do_csum != 0)))
+
+ while (data_len)
{
- wsum_addr = (u16 *) (((u8 *) vlib_buffer_get_current (b0)) +
- vlan_len + vh->csum_start +
- vh->csum_offset);
- if (bytes_copied <= vh->csum_start)
+ /* grab free buffer */
+ u32 last_empty_buffer =
+ vec_len (apm->rx_buffers[thread_index]) - 1;
+ bi0 = apm->rx_buffers[thread_index][last_empty_buffer];
+ _vec_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 = vlib_get_buffer (vm, bi0);
+ b0->current_data = 0;
+
+ /* Kernel removes VLAN headers, so reconstruct VLAN */
+ if (PREDICT_FALSE (tph->tp_status & TP_STATUS_VLAN_VALID))
{
- clib_memcpy (((u8 *) vlib_buffer_get_current (b0)) +
- bytes_copied + vlan_len,
- (u8 *) tph + tph->tp_mac + offset +
- bytes_copied,
- (vh->csum_start - bytes_copied));
- wsum =
- ip_csum_and_memcpy (wsum,
- ((u8 *)
- vlib_buffer_get_current (b0)) +
- vh->csum_start + vlan_len,
- (u8 *) tph + tph->tp_mac +
- offset + vh->csum_start,
- (bytes_to_copy - vh->csum_start));
+ 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->hv1.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);
+ }
}
- else
+ 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)
{
- wsum =
- ip_csum_and_memcpy (wsum,
- ((u8 *)
- vlib_buffer_get_current (b0)) +
- bytes_copied + vlan_len,
- (u8 *) tph + tph->tp_mac +
- offset + bytes_copied,
- (bytes_to_copy - bytes_copied));
+ 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_b0 = b0;
+ first_bi0 = 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
{
- clib_memcpy (((u8 *) vlib_buffer_get_current (b0)) +
- bytes_copied + vlan_len,
- (u8 *) tph + tph->tp_mac + offset +
- bytes_copied, (bytes_to_copy - bytes_copied));
+ if (PREDICT_FALSE (apif->mode == AF_PACKET_IF_MODE_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;
+ }
}
- /* fill buffer header */
- b0->current_length = bytes_to_copy + vlan_len;
-
- if (offset == 0)
+ /* trace */
+ if (PREDICT_FALSE (n_trace > 0 &&
+ vlib_trace_buffer (vm, node, next0, first_b0,
+ /* follow_chain */ 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);
+ 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->next_index = next0;
+ tr->hw_if_index = apif->hw_if_index;
+ tr->queue_id = queue_id;
+ tr->block = block;
+ 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));
+ 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));
}
- else
- buffer_add_to_chain (vm, bi0, first_bi0, prev_bi0);
-
- offset += bytes_to_copy;
- data_len -= bytes_to_copy;
- }
- if (PREDICT_TRUE ((do_vnet != 0) && (do_csum != 0)))
- {
- *wsum_addr = ~ip_csum_fold (wsum);
- }
- n_rx_packets++;
- n_rx_bytes += tph->tp_snaplen;
- to_next[0] = first_bi0;
- to_next += 1;
- n_left_to_next--;
-
- /* trace */
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (first_b0);
- if (PREDICT_FALSE (n_trace > 0))
- {
- af_packet_input_trace_t *tr;
- vlib_trace_buffer (vm, node, next0, first_b0, /* follow_chain */
- 0);
- vlib_set_trace_count (vm, node, --n_trace);
- tr = vlib_add_trace (vm, node, first_b0, sizeof (*tr));
- tr->next_index = next0;
- tr->hw_if_index = apif->hw_if_index;
- clib_memcpy (&tr->tph, tph, sizeof (struct tpacket2_hdr));
- }
- /* redirect if feature path enabled */
- vnet_feature_start_device_input_x1 (apif->sw_if_index, &next0, b0);
+ /* enque and take next packet */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, first_bi0,
+ next0);
- /* 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 */
+ num_pkts--;
+ rx_frame_offset += tph->tp_next_offset;
+ }
- /* 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);
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ if (PREDICT_TRUE (num_pkts == 0))
+ {
+ bd->hdr.bh1.block_status = TP_STATUS_KERNEL;
+ block = (block + 1) % block_nr;
+ }
+ else
+ {
+ rx_queue->rx_frame_offset = rx_frame_offset;
+ rx_queue->num_rx_pkts = num_pkts;
+ rx_queue->is_rx_pending = 1;
+ }
}
- apif->next_rx_frame = rx_frame;
+ rx_queue->next_rx_block = block;
+
+done:
+
+ if ((((block_desc_t *) (block_start = rx_queue->rx_ring[block]))
+ ->hdr.bh1.block_status &
+ TP_STATUS_USER) != 0)
+ vlib_node_set_state (vm, node->node_index, VLIB_NODE_STATE_POLLING);
+ else
+ vlib_node_set_state (vm, node->node_index, VLIB_NODE_STATE_INTERRUPT);
+
+ vlib_error_count (vm, node->node_index, AF_PACKET_INPUT_ERROR_TOTAL_RECV_BLK,
+ total);
+ vlib_error_count (vm, node->node_index, AF_PACKET_INPUT_ERROR_TIMEDOUT_BLK,
+ timedout_blk);
vlib_increment_combined_counter
(vnet_get_main ()->interface_main.combined_sw_if_counters
return n_rx_packets;
}
-static uword
-af_packet_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+VLIB_NODE_FN (af_packet_input_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
u32 n_rx_packets = 0;
af_packet_main_t *apm = &af_packet_main;
- vnet_device_input_runtime_t *rt = (void *) node->runtime_data;
- vnet_device_and_queue_t *dq;
-
- foreach_device_and_queue (dq, rt->devices_and_queues)
- {
- af_packet_if_t *apif;
- apif = vec_elt_at_index (apm->interfaces, dq->dev_instance);
- if (apif->is_admin_up)
- n_rx_packets += af_packet_device_input_fn (vm, node, frame, apif);
- }
-
+ vnet_hw_if_rxq_poll_vector_t *pv;
+ pv = vnet_hw_if_get_rxq_poll_vector (vm, node);
+ for (int i = 0; i < vec_len (pv); i++)
+ {
+ af_packet_if_t *apif;
+ apif = vec_elt_at_index (apm->interfaces, pv[i].dev_instance);
+ if (apif->is_admin_up)
+ {
+ if (apif->is_cksum_gso_enabled)
+ n_rx_packets += af_packet_device_input_fn (vm, node, frame, apif,
+ pv[i].queue_id, 1);
+ else
+ n_rx_packets += af_packet_device_input_fn (vm, node, frame, apif,
+ pv[i].queue_id, 0);
+ }
+ }
return n_rx_packets;
}
-/* *INDENT-OFF* */
VLIB_REGISTER_NODE (af_packet_input_node) = {
- .function = af_packet_input_fn,
.name = "af-packet-input",
+ .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
.sibling_of = "device-input",
.format_trace = format_af_packet_input_trace,
.type = VLIB_NODE_TYPE_INPUT,
.error_strings = af_packet_input_error_strings,
};
-VLIB_NODE_FUNCTION_MULTIARCH (af_packet_input_node, af_packet_input_fn)
-/* *INDENT-ON* */
-
/*
* fd.io coding-style-patch-verification: ON
Code Review / vpp.git / blobdiff