2 *------------------------------------------------------------------
3 * af_packet_api.c - af-packet api
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 <vnet/vnet.h>
21 #include <vlibmemory/api.h>
23 #include <vnet/interface.h>
24 #include <vnet/api_errno.h>
25 #include <vnet/devices/af_packet/af_packet.h>
27 #include <vnet/format_fns.h>
28 #include <vnet/devices/af_packet/af_packet.api_enum.h>
29 #include <vnet/devices/af_packet/af_packet.api_types.h>
31 #define REPLY_MSG_ID_BASE msg_id_base
32 #include <vlibapi/api_helper_macros.h>
34 static u16 msg_id_base;
37 vl_api_af_packet_create_t_handler (vl_api_af_packet_create_t * mp)
39 af_packet_create_if_arg_t _arg, *arg = &_arg;
40 vl_api_af_packet_create_reply_t *rmp;
43 clib_memset (arg, 0, sizeof (*arg));
45 arg->host_if_name = format (0, "%s", mp->host_if_name);
46 vec_add1 (arg->host_if_name, 0);
48 arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr;
49 arg->mode = AF_PACKET_IF_MODE_ETHERNET;
51 arg->flags = AF_PACKET_IF_FLAGS_QDISC_BYPASS | AF_PACKET_IF_FLAGS_CKSUM_GSO;
52 rv = af_packet_create_if (arg);
54 vec_free (arg->host_if_name);
56 REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_REPLY, ({
57 rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index);
62 vl_api_af_packet_create_v2_t_handler (vl_api_af_packet_create_v2_t *mp)
64 af_packet_create_if_arg_t _arg, *arg = &_arg;
65 vl_api_af_packet_create_v2_reply_t *rmp;
68 clib_memset (arg, 0, sizeof (*arg));
70 arg->host_if_name = format (0, "%s", mp->host_if_name);
71 vec_add1 (arg->host_if_name, 0);
73 // Default number of rx/tx queue(s)
76 arg->rx_frame_size = clib_net_to_host_u32 (mp->rx_frame_size);
77 arg->tx_frame_size = clib_net_to_host_u32 (mp->tx_frame_size);
78 arg->rx_frames_per_block = clib_net_to_host_u32 (mp->rx_frames_per_block);
79 arg->tx_frames_per_block = clib_net_to_host_u32 (mp->tx_frames_per_block);
80 arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr;
81 arg->mode = AF_PACKET_IF_MODE_ETHERNET;
83 arg->flags = AF_PACKET_IF_FLAGS_QDISC_BYPASS | AF_PACKET_IF_FLAGS_CKSUM_GSO;
85 if (mp->num_rx_queues > 1)
86 arg->num_rxqs = clib_net_to_host_u16 (mp->num_rx_queues);
88 rv = af_packet_create_if (arg);
90 vec_free (arg->host_if_name);
91 REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_V2_REPLY, ({
92 rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index);
97 vl_api_af_packet_create_v3_t_handler (vl_api_af_packet_create_v3_t *mp)
99 af_packet_create_if_arg_t _arg, *arg = &_arg;
100 vl_api_af_packet_create_v3_reply_t *rmp;
103 clib_memset (arg, 0, sizeof (*arg));
105 arg->host_if_name = format (0, "%s", mp->host_if_name);
106 vec_add1 (arg->host_if_name, 0);
108 // Default number of rx/tx queue(s)
111 arg->rx_frame_size = clib_net_to_host_u32 (mp->rx_frame_size);
112 arg->tx_frame_size = clib_net_to_host_u32 (mp->tx_frame_size);
113 arg->rx_frames_per_block = clib_net_to_host_u32 (mp->rx_frames_per_block);
114 arg->tx_frames_per_block = clib_net_to_host_u32 (mp->tx_frames_per_block);
115 arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr;
117 switch (clib_net_to_host_u32 (mp->mode))
119 case AF_PACKET_API_MODE_ETHERNET:
120 arg->mode = AF_PACKET_IF_MODE_ETHERNET;
122 case AF_PACKET_API_MODE_IP:
123 arg->mode = AF_PACKET_IF_MODE_IP;
126 arg->sw_if_index = ~0;
127 rv = VNET_ERR_INVALID_VALUE;
131 STATIC_ASSERT (((int) AF_PACKET_API_FLAG_QDISC_BYPASS ==
132 (int) AF_PACKET_IF_FLAGS_QDISC_BYPASS),
133 "af-packet qdisc-bypass api flag mismatch");
135 ((int) AF_PACKET_API_FLAG_CKSUM_GSO == (int) AF_PACKET_IF_FLAGS_CKSUM_GSO),
136 "af-packet checksum/gso offload api flag mismatch");
139 ((int) AF_PACKET_API_FLAG_VERSION_2 == (int) AF_PACKET_IF_FLAGS_VERSION_2),
140 "af-packet version 2 api flag mismatch");
143 arg->flags = clib_net_to_host_u32 (mp->flags);
145 if (clib_net_to_host_u16 (mp->num_rx_queues) > 1)
146 arg->num_rxqs = clib_net_to_host_u16 (mp->num_rx_queues);
148 if (clib_net_to_host_u16 (mp->num_tx_queues) > 1)
149 arg->num_txqs = clib_net_to_host_u16 (mp->num_tx_queues);
151 arg->is_v2 = (arg->flags & AF_PACKET_API_FLAG_VERSION_2) ? 1 : 0;
152 rv = af_packet_create_if (arg);
155 vec_free (arg->host_if_name);
156 REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_V3_REPLY, ({
157 rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index);
162 vl_api_af_packet_delete_t_handler (vl_api_af_packet_delete_t * mp)
164 vl_api_af_packet_delete_reply_t *rmp;
166 u8 *host_if_name = NULL;
168 host_if_name = format (0, "%s", mp->host_if_name);
169 vec_add1 (host_if_name, 0);
171 rv = af_packet_delete_if (host_if_name);
173 vec_free (host_if_name);
175 REPLY_MACRO (VL_API_AF_PACKET_DELETE_REPLY);
179 vl_api_af_packet_set_l4_cksum_offload_t_handler
180 (vl_api_af_packet_set_l4_cksum_offload_t * mp)
182 vl_api_af_packet_delete_reply_t *rmp;
185 rv = af_packet_set_l4_cksum_offload (ntohl (mp->sw_if_index), mp->set);
186 REPLY_MACRO (VL_API_AF_PACKET_SET_L4_CKSUM_OFFLOAD_REPLY);
190 af_packet_send_details (vpe_api_main_t * am,
191 vl_api_registration_t * reg,
192 af_packet_if_detail_t * af_packet_if, u32 context)
194 vl_api_af_packet_details_t *mp;
195 mp = vl_msg_api_alloc (sizeof (*mp));
196 clib_memset (mp, 0, sizeof (*mp));
197 mp->_vl_msg_id = htons (REPLY_MSG_ID_BASE + VL_API_AF_PACKET_DETAILS);
198 mp->sw_if_index = htonl (af_packet_if->sw_if_index);
199 clib_memcpy (mp->host_if_name, af_packet_if->host_if_name,
200 MIN (ARRAY_LEN (mp->host_if_name) - 1,
201 strlen ((const char *) af_packet_if->host_if_name)));
203 mp->context = context;
204 vl_api_send_msg (reg, (u8 *) mp);
209 vl_api_af_packet_dump_t_handler (vl_api_af_packet_dump_t * mp)
212 vpe_api_main_t *am = &vpe_api_main;
213 vl_api_registration_t *reg;
214 af_packet_if_detail_t *out_af_packet_ifs = NULL;
215 af_packet_if_detail_t *af_packet_if = NULL;
217 reg = vl_api_client_index_to_registration (mp->client_index);
221 rv = af_packet_dump_ifs (&out_af_packet_ifs);
225 vec_foreach (af_packet_if, out_af_packet_ifs)
227 af_packet_send_details (am, reg, af_packet_if, mp->context);
230 vec_free (out_af_packet_ifs);
233 #include <vnet/devices/af_packet/af_packet.api.c>
234 static clib_error_t *
235 af_packet_api_hookup (vlib_main_t * vm)
238 * Set up the (msg_name, crc, message-id) table
240 REPLY_MSG_ID_BASE = setup_message_id_table ();
245 VLIB_API_INIT_FUNCTION (af_packet_api_hookup);
248 * fd.io coding-style-patch-verification: ON
251 * eval: (c-set-style "gnu")