diff options
Diffstat (limited to 'src/plugins/af_packet/af_packet_api.c')
| -rw-r--r-- | src/plugins/af_packet/af_packet_api.c | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/src/plugins/af_packet/af_packet_api.c b/src/plugins/af_packet/af_packet_api.c new file mode 100644 index 00000000000..ede057659e8 --- /dev/null +++ b/src/plugins/af_packet/af_packet_api.c @@ -0,0 +1,253 @@ +/* + *------------------------------------------------------------------ + * af_packet_api.c - af-packet api + * + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + *------------------------------------------------------------------ + */ + +#include <vnet/vnet.h> +#include <vlibmemory/api.h> + +#include <vnet/interface.h> +#include <vnet/api_errno.h> +#include <af_packet/af_packet.h> + +#include <vnet/format_fns.h> +#include <af_packet/af_packet.api_enum.h> +#include <af_packet/af_packet.api_types.h> + +#define REPLY_MSG_ID_BASE msg_id_base +#include <vlibapi/api_helper_macros.h> + +static u16 msg_id_base; + +static void +vl_api_af_packet_create_t_handler (vl_api_af_packet_create_t * mp) +{ + af_packet_create_if_arg_t _arg, *arg = &_arg; + vl_api_af_packet_create_reply_t *rmp; + int rv = 0; + + clib_memset (arg, 0, sizeof (*arg)); + + arg->host_if_name = format (0, "%s", mp->host_if_name); + vec_add1 (arg->host_if_name, 0); + + arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr; + arg->mode = AF_PACKET_IF_MODE_ETHERNET; + // Default flags + arg->flags = AF_PACKET_IF_FLAGS_QDISC_BYPASS | AF_PACKET_IF_FLAGS_CKSUM_GSO; + rv = af_packet_create_if (arg); + + vec_free (arg->host_if_name); + + REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_REPLY, ({ + rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index); + })); +} + +static void +vl_api_af_packet_create_v2_t_handler (vl_api_af_packet_create_v2_t *mp) +{ + af_packet_create_if_arg_t _arg, *arg = &_arg; + vl_api_af_packet_create_v2_reply_t *rmp; + int rv = 0; + + clib_memset (arg, 0, sizeof (*arg)); + + arg->host_if_name = format (0, "%s", mp->host_if_name); + vec_add1 (arg->host_if_name, 0); + + // Default number of rx/tx queue(s) + arg->num_rxqs = 1; + arg->num_txqs = 1; + arg->rx_frame_size = clib_net_to_host_u32 (mp->rx_frame_size); + arg->tx_frame_size = clib_net_to_host_u32 (mp->tx_frame_size); + arg->rx_frames_per_block = clib_net_to_host_u32 (mp->rx_frames_per_block); + arg->tx_frames_per_block = clib_net_to_host_u32 (mp->tx_frames_per_block); + arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr; + arg->mode = AF_PACKET_IF_MODE_ETHERNET; + // Default flags + arg->flags = AF_PACKET_IF_FLAGS_QDISC_BYPASS | AF_PACKET_IF_FLAGS_CKSUM_GSO; + + if (mp->num_rx_queues > 1) + arg->num_rxqs = clib_net_to_host_u16 (mp->num_rx_queues); + + rv = af_packet_create_if (arg); + + vec_free (arg->host_if_name); + REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_V2_REPLY, ({ + rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index); + })); +} + +static void +vl_api_af_packet_create_v3_t_handler (vl_api_af_packet_create_v3_t *mp) +{ + af_packet_create_if_arg_t _arg, *arg = &_arg; + vl_api_af_packet_create_v3_reply_t *rmp; + int rv = 0; + + clib_memset (arg, 0, sizeof (*arg)); + + arg->host_if_name = format (0, "%s", mp->host_if_name); + vec_add1 (arg->host_if_name, 0); + + // Default number of rx/tx queue(s) + arg->num_rxqs = 1; + arg->num_txqs = 1; + arg->rx_frame_size = clib_net_to_host_u32 (mp->rx_frame_size); + arg->tx_frame_size = clib_net_to_host_u32 (mp->tx_frame_size); + arg->rx_frames_per_block = clib_net_to_host_u32 (mp->rx_frames_per_block); + arg->tx_frames_per_block = clib_net_to_host_u32 (mp->tx_frames_per_block); + arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr; + + switch (clib_net_to_host_u32 (mp->mode)) + { + case AF_PACKET_API_MODE_ETHERNET: + arg->mode = AF_PACKET_IF_MODE_ETHERNET; + break; + case AF_PACKET_API_MODE_IP: + arg->mode = AF_PACKET_IF_MODE_IP; + break; + default: + arg->sw_if_index = ~0; + rv = VNET_ERR_INVALID_VALUE; + goto error; + } + + STATIC_ASSERT (((int) AF_PACKET_API_FLAG_QDISC_BYPASS == + (int) AF_PACKET_IF_FLAGS_QDISC_BYPASS), + "af-packet qdisc-bypass api flag mismatch"); + STATIC_ASSERT ( + ((int) AF_PACKET_API_FLAG_CKSUM_GSO == (int) AF_PACKET_IF_FLAGS_CKSUM_GSO), + "af-packet checksum/gso offload api flag mismatch"); + + STATIC_ASSERT ( + ((int) AF_PACKET_API_FLAG_VERSION_2 == (int) AF_PACKET_IF_FLAGS_VERSION_2), + "af-packet version 2 api flag mismatch"); + + // Default flags + arg->flags = clib_net_to_host_u32 (mp->flags); + + if (clib_net_to_host_u16 (mp->num_rx_queues) > 1) + arg->num_rxqs = clib_net_to_host_u16 (mp->num_rx_queues); + + if (clib_net_to_host_u16 (mp->num_tx_queues) > 1) + arg->num_txqs = clib_net_to_host_u16 (mp->num_tx_queues); + + arg->is_v2 = (arg->flags & AF_PACKET_API_FLAG_VERSION_2) ? 1 : 0; + rv = af_packet_create_if (arg); + +error: + vec_free (arg->host_if_name); + REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_V3_REPLY, ({ + rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index); + })); +} + +static void +vl_api_af_packet_delete_t_handler (vl_api_af_packet_delete_t * mp) +{ + vl_api_af_packet_delete_reply_t *rmp; + int rv = 0; + u8 *host_if_name = NULL; + + host_if_name = format (0, "%s", mp->host_if_name); + vec_add1 (host_if_name, 0); + + rv = af_packet_delete_if (host_if_name); + + vec_free (host_if_name); + + REPLY_MACRO (VL_API_AF_PACKET_DELETE_REPLY); +} + +static void + vl_api_af_packet_set_l4_cksum_offload_t_handler + (vl_api_af_packet_set_l4_cksum_offload_t * mp) +{ + vl_api_af_packet_delete_reply_t *rmp; + int rv = 0; + + rv = af_packet_set_l4_cksum_offload (ntohl (mp->sw_if_index), mp->set); + REPLY_MACRO (VL_API_AF_PACKET_SET_L4_CKSUM_OFFLOAD_REPLY); +} + +static void +af_packet_send_details (vpe_api_main_t * am, + vl_api_registration_t * reg, + af_packet_if_detail_t * af_packet_if, u32 context) +{ + vl_api_af_packet_details_t *mp; + mp = vl_msg_api_alloc (sizeof (*mp)); + clib_memset (mp, 0, sizeof (*mp)); + mp->_vl_msg_id = htons (REPLY_MSG_ID_BASE + VL_API_AF_PACKET_DETAILS); + mp->sw_if_index = htonl (af_packet_if->sw_if_index); + clib_memcpy (mp->host_if_name, af_packet_if->host_if_name, + MIN (ARRAY_LEN (mp->host_if_name) - 1, + strlen ((const char *) af_packet_if->host_if_name))); + + mp->context = context; + vl_api_send_msg (reg, (u8 *) mp); +} + + +static void +vl_api_af_packet_dump_t_handler (vl_api_af_packet_dump_t * mp) +{ + int rv; + vpe_api_main_t *am = &vpe_api_main; + vl_api_registration_t *reg; + af_packet_if_detail_t *out_af_packet_ifs = NULL; + af_packet_if_detail_t *af_packet_if = NULL; + + reg = vl_api_client_index_to_registration (mp->client_index); + if (!reg) + return; + + rv = af_packet_dump_ifs (&out_af_packet_ifs); + if (rv) + return; + + vec_foreach (af_packet_if, out_af_packet_ifs) + { + af_packet_send_details (am, reg, af_packet_if, mp->context); + } + + vec_free (out_af_packet_ifs); +} + +#include <af_packet/af_packet.api.c> +static clib_error_t * +af_packet_api_hookup (vlib_main_t * vm) +{ + /* + * Set up the (msg_name, crc, message-id) table + */ + REPLY_MSG_ID_BASE = setup_message_id_table (); + + return 0; +} + +VLIB_API_INIT_FUNCTION (af_packet_api_hookup); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |