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Damjan Marion83243a02016-02-29 13:09:30 +01001/*
2 *------------------------------------------------------------------
3 * af_packet.h - linux kernel packet interface header file
4 *
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:
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
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 *------------------------------------------------------------------
18 */
19
Damjan Marion1927da22017-03-27 17:08:20 +020020#include <vppinfra/lock.h>
21
Mohsin Kazmiacba9f72018-05-17 15:42:27 +020022#include <vlib/log.h>
23
Damjan Marion00a9dca2016-08-17 17:05:46 +020024typedef struct
25{
Mohsin Kazmi04e0bb22018-05-28 18:55:37 +020026 u32 sw_if_index;
27 u8 host_if_name[64];
28} af_packet_if_detail_t;
29
30typedef struct
31{
Damjan Marion00a9dca2016-08-17 17:05:46 +020032 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
Damjan Marion1927da22017-03-27 17:08:20 +020033 clib_spinlock_t lockp;
Damjan Marion00a9dca2016-08-17 17:05:46 +020034 u8 *host_if_name;
Ray Kinsellac855b732017-04-21 12:24:43 +010035 int host_if_index;
Damjan Marion83243a02016-02-29 13:09:30 +010036 int fd;
Damjan Marion00a9dca2016-08-17 17:05:46 +020037 struct tpacket_req *rx_req;
38 struct tpacket_req *tx_req;
39 u8 *rx_ring;
40 u8 *tx_ring;
Damjan Marion83243a02016-02-29 13:09:30 +010041 u32 hw_if_index;
42 u32 sw_if_index;
Damjan Marion56dd5432017-09-08 19:52:02 +020043 u32 clib_file_index;
Damjan Marion83243a02016-02-29 13:09:30 +010044
45 u32 next_rx_frame;
46 u32 next_tx_frame;
47
48 u32 per_interface_next_index;
49 u8 is_admin_up;
Mohammed Hawari85c19432020-12-18 16:29:45 +010050 u32 queue_index;
Nathan Skrzypczakffc6bdc2021-02-01 17:13:59 +010051 u32 host_mtu;
Damjan Marion83243a02016-02-29 13:09:30 +010052} af_packet_if_t;
53
Damjan Marion00a9dca2016-08-17 17:05:46 +020054typedef struct
55{
56 CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
57 af_packet_if_t *interfaces;
Damjan Marion83243a02016-02-29 13:09:30 +010058
59 /* bitmap of pending rx interfaces */
Damjan Marion00a9dca2016-08-17 17:05:46 +020060 uword *pending_input_bitmap;
Damjan Marion83243a02016-02-29 13:09:30 +010061
62 /* rx buffer cache */
Damjan Marion553f6bd2016-09-07 11:54:22 +020063 u32 **rx_buffers;
Damjan Marion83243a02016-02-29 13:09:30 +010064
65 /* hash of host interface names */
66 mhash_t if_index_by_host_if_name;
Mohsin Kazmiacba9f72018-05-17 15:42:27 +020067
68 /** log class */
69 vlib_log_class_t log_class;
Damjan Marion83243a02016-02-29 13:09:30 +010070} af_packet_main_t;
71
Nathan Skrzypczak7d0e30b2021-06-23 11:28:39 +020072typedef struct
73{
74 u8 *host_if_name;
75 u8 *hw_addr;
76 u32 rx_frame_size;
77 u32 tx_frame_size;
78 u32 rx_frames_per_block;
79 u32 tx_frames_per_block;
80
81 /* return */
82 u32 sw_if_index;
83} af_packet_create_if_arg_t;
84
Dave Wallace71612d62017-10-24 01:32:41 -040085extern af_packet_main_t af_packet_main;
Damjan Marion83243a02016-02-29 13:09:30 +010086extern vnet_device_class_t af_packet_device_class;
87extern vlib_node_registration_t af_packet_input_node;
88
Nathan Skrzypczak7d0e30b2021-06-23 11:28:39 +020089int af_packet_create_if (af_packet_create_if_arg_t *arg);
90int af_packet_delete_if (u8 *host_if_name);
91int af_packet_set_l4_cksum_offload (u32 sw_if_index, u8 set);
Mohsin Kazmi04e0bb22018-05-28 18:55:37 +020092int af_packet_dump_ifs (af_packet_if_detail_t ** out_af_packet_ifs);
Damjan Marion00a9dca2016-08-17 17:05:46 +020093
Damjan Marionceab7882018-01-19 20:56:12 +010094format_function_t format_af_packet_device_name;
95
Mohsin Kazmi04e0bb22018-05-28 18:55:37 +020096#define MIN(x,y) (((x)<(y))?(x):(y))
97
Damjan Marion00a9dca2016-08-17 17:05:46 +020098/*
99 * fd.io coding-style-patch-verification: ON
100 *
101 * Local Variables:
102 * eval: (c-set-style "gnu")
103 * End:
104 */