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authorMohsin Kazmi <sykazmi@cisco.com>2021-10-08 15:10:49 +0000
committerBeno�t Ganne <bganne@cisco.com>2021-10-22 12:37:36 +0000
commitcae84fa96856406c93c37e0a38f67d4c6ee7f48a (patch)
tree617e05be28146aff824d47ed71a28ab72bcf8cde /src/vnet/devices/af_packet/node.c
parent0ad060851b4989a1cd300ad711e8498435f65f9a (diff)
devices: add support for l3 af_packet interface
Type: improvement Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com> Change-Id: Ia6b9d4ac55be2216887bfdb99be4021f6a96f166
Diffstat (limited to 'src/vnet/devices/af_packet/node.c')
-rw-r--r--src/vnet/devices/af_packet/node.c49
1 files changed, 40 insertions, 9 deletions
diff --git a/src/vnet/devices/af_packet/node.c b/src/vnet/devices/af_packet/node.c
index e2f87b10b35..0fdae5c3039 100644
--- a/src/vnet/devices/af_packet/node.c
+++ b/src/vnet/devices/af_packet/node.c
@@ -194,7 +194,7 @@ af_packet_device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
{
af_packet_main_t *apm = &af_packet_main;
struct tpacket2_hdr *tph;
- u32 next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
+ u32 next_index;
u32 block = 0;
u32 rx_frame;
u32 n_free_bufs;
@@ -209,6 +209,21 @@ af_packet_device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
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;
+ vlib_buffer_t bt;
+
+ if (apif->mode == AF_PACKET_IF_MODE_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))
@@ -317,14 +332,30 @@ af_packet_device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
}
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);
+ 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;
+ }
}
/* trace */