#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>
-#define foreach_af_packet_input_error
+#define foreach_af_packet_input_error \
+ _(PARTIAL_PKT, "partial packet")
typedef enum
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
af_packet_input_trace_t *t = va_arg (*args, af_packet_input_trace_t *);
- uword indent = format_get_indent (s);
+ 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);
b->next_buffer = 0;
}
+static_always_inline void
+fill_gso_buffer_flags (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
+mark_tcp_udp_cksum_calc (vlib_buffer_t *b, u8 *l4_hdr_sz)
+{
+ ethernet_header_t *eth = vlib_buffer_get_current (b);
+ vnet_buffer_oflags_t oflags = 0;
+ if (clib_net_to_host_u16 (eth->type) == ETHERNET_TYPE_IP4)
+ {
+ ip4_header_t *ip4 =
+ (vlib_buffer_get_current (b) + sizeof (ethernet_header_t));
+ b->flags |= VNET_BUFFER_F_IS_IP4;
+ if (ip4->protocol == IP_PROTOCOL_TCP)
+ {
+ oflags |= VNET_BUFFER_OFFLOAD_F_TCP_CKSUM;
+ tcp_header_t *tcp = (tcp_header_t *) (vlib_buffer_get_current (b) +
+ sizeof (ethernet_header_t) +
+ ip4_header_bytes (ip4));
+ tcp->checksum = 0;
+ *l4_hdr_sz = tcp_header_bytes (tcp);
+ }
+ else if (ip4->protocol == IP_PROTOCOL_UDP)
+ {
+ oflags |= VNET_BUFFER_OFFLOAD_F_UDP_CKSUM;
+ udp_header_t *udp = (udp_header_t *) (vlib_buffer_get_current (b) +
+ sizeof (ethernet_header_t) +
+ ip4_header_bytes (ip4));
+ udp->checksum = 0;
+ *l4_hdr_sz = sizeof (*udp);
+ }
+ vnet_buffer (b)->l3_hdr_offset = sizeof (ethernet_header_t);
+ vnet_buffer (b)->l4_hdr_offset =
+ sizeof (ethernet_header_t) + ip4_header_bytes (ip4);
+ if (oflags)
+ vnet_buffer_offload_flags_set (b, oflags);
+ }
+ else if (clib_net_to_host_u16 (eth->type) == ETHERNET_TYPE_IP6)
+ {
+ ip6_header_t *ip6 =
+ (vlib_buffer_get_current (b) + sizeof (ethernet_header_t));
+ b->flags |= VNET_BUFFER_F_IS_IP6;
+ 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);
+ }
+ }
+ if (ip6->protocol == IP_PROTOCOL_TCP)
+ {
+ oflags |= VNET_BUFFER_OFFLOAD_F_TCP_CKSUM;
+ tcp_header_t *tcp =
+ (tcp_header_t *) (vlib_buffer_get_current (b) +
+ sizeof (ethernet_header_t) + ip6_hdr_len);
+ tcp->checksum = 0;
+ *l4_hdr_sz = tcp_header_bytes (tcp);
+ }
+ else if (ip6->protocol == IP_PROTOCOL_UDP)
+ {
+ oflags |= VNET_BUFFER_OFFLOAD_F_UDP_CKSUM;
+ udp_header_t *udp =
+ (udp_header_t *) (vlib_buffer_get_current (b) +
+ sizeof (ethernet_header_t) + ip6_hdr_len);
+ udp->checksum = 0;
+ *l4_hdr_sz = sizeof (*udp);
+ }
+ vnet_buffer (b)->l3_hdr_offset = sizeof (ethernet_header_t);
+ vnet_buffer (b)->l4_hdr_offset =
+ sizeof (ethernet_header_t) + ip6_hdr_len;
+ 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)
u32 frame_num = apif->rx_req->tp_frame_nr;
u8 *block_start = apif->rx_ring + block * block_size;
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 thread_index = vm->thread_index;
+ u32 n_buffer_bytes = vlib_buffer_get_default_data_size (vm);
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 data_len = tph->tp_snaplen;
u32 offset = 0;
u32 bi0 = 0, first_bi0 = 0, prev_bi0;
+ u8 l4_hdr_sz = 0;
while (data_len)
{
/* 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;
- clib_memcpy (vlib_buffer_get_current (b0),
- (u8 *) tph + tph->tp_mac + offset, bytes_to_copy);
+ /* 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;
+ b0->current_length = bytes_to_copy + vlan_len;
if (offset == 0)
{
vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
first_bi0 = bi0;
first_b0 = vlib_get_buffer (vm, first_bi0);
+ if (tph->tp_status & TP_STATUS_CSUMNOTREADY)
+ mark_tcp_udp_cksum_calc (first_b0, &l4_hdr_sz);
+ if (tph->tp_snaplen > apif->host_mtu)
+ fill_gso_buffer_flags (first_b0, apif->host_mtu,
+ l4_hdr_sz);
}
else
buffer_add_to_chain (vm, bi0, first_bi0, prev_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
+ {
+ next0 = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
+
+ if (PREDICT_FALSE (apif->per_interface_next_index != ~0))
+ next0 = apif->per_interface_next_index;
+
+ /* redirect if feature path enabled */
+ vnet_feature_start_device_input_x1 (apif->sw_if_index, &next0,
+ first_b0);
+ }
+
/* trace */
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (first_b0);
- if (PREDICT_FALSE (n_trace > 0))
+ if (PREDICT_FALSE
+ (n_trace > 0 && vlib_trace_buffer (vm, node, next0, first_b0,
+ /* follow_chain */ 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));
+ clib_memcpy_fast (&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);
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)
+ n_rx_packets += af_packet_device_input_fn (vm, node, frame, apif);
+ }
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