2 *------------------------------------------------------------------
3 * af_packet.h - linux kernel packet interface header file
5 * Copyright (c) 2016 Cisco and/or its affiliates.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at:
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 *------------------------------------------------------------------
20 #include <linux/if_packet.h>
22 #include <vppinfra/lock.h>
25 typedef struct tpacket_block_desc block_desc_t;
26 typedef struct tpacket_req tpacket_req_t;
27 typedef struct tpacket_req3 tpacket_req3_t;
28 typedef struct tpacket2_hdr tpacket2_hdr_t;
29 typedef struct tpacket3_hdr tpacket3_hdr_t;
31 typedef union _tpacket_req_u
39 AF_PACKET_IF_MODE_ETHERNET = 1,
40 AF_PACKET_IF_MODE_IP = 2
41 } af_packet_if_mode_t;
45 AF_PACKET_IF_FLAGS_QDISC_BYPASS = 1,
46 AF_PACKET_IF_FLAGS_CKSUM_GSO = 2,
47 AF_PACKET_IF_FLAGS_FANOUT = 4,
48 AF_PACKET_IF_FLAGS_VERSION_2 = 8,
49 } af_packet_if_flags_t;
55 } af_packet_if_detail_t;
65 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
66 clib_spinlock_t lockp;
70 tpacket_req_u_t *rx_req;
71 tpacket_req_u_t *tx_req;
96 vnet_hw_if_rx_mode mode;
101 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
104 u32 per_interface_next_index;
105 af_packet_if_mode_t mode;
107 u8 is_cksum_gso_enabled;
109 af_packet_queue_t *rx_queues;
110 af_packet_queue_t *tx_queues;
121 af_packet_ring_t *rings;
122 u8 is_qdisc_bypass_enabled;
123 u8 is_fanout_enabled;
128 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
129 af_packet_if_t *interfaces;
132 /* rx buffer cache */
135 /* hash of host interface names */
136 mhash_t if_index_by_host_if_name;
139 vlib_log_class_t log_class;
148 u32 rx_frames_per_block;
149 u32 tx_frames_per_block;
153 af_packet_if_mode_t mode;
154 af_packet_if_flags_t flags;
158 } af_packet_create_if_arg_t;
160 extern af_packet_main_t af_packet_main;
161 extern vnet_device_class_t af_packet_device_class;
162 extern vlib_node_registration_t af_packet_input_node;
164 int af_packet_create_if (af_packet_create_if_arg_t *arg);
165 int af_packet_delete_if (u8 *host_if_name);
166 int af_packet_set_l4_cksum_offload (u32 sw_if_index, u8 set);
167 int af_packet_dump_ifs (af_packet_if_detail_t ** out_af_packet_ifs);
169 format_function_t format_af_packet_device_name;
171 #define MIN(x,y) (((x)<(y))?(x):(y))
174 * fd.io coding-style-patch-verification: ON
177 * eval: (c-set-style "gnu")