diff options
Diffstat (limited to 'src/vnet/devices/af_packet/cli.c')
-rw-r--r-- | src/vnet/devices/af_packet/cli.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/src/vnet/devices/af_packet/cli.c b/src/vnet/devices/af_packet/cli.c new file mode 100644 index 00000000..44dc5179 --- /dev/null +++ b/src/vnet/devices/af_packet/cli.c @@ -0,0 +1,211 @@ +/* + *------------------------------------------------------------------ + * af_packet.c - linux kernel packet interface + * + * 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 <fcntl.h> /* for open */ +#include <sys/ioctl.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/uio.h> /* for iovec */ +#include <netinet/in.h> + +#include <vlib/vlib.h> +#include <vlib/unix/unix.h> +#include <vnet/ip/ip.h> +#include <vnet/ethernet/ethernet.h> + +#include <vnet/devices/af_packet/af_packet.h> + +/** + * @file + * @brief CLI for Host Interface Device Driver. + * + * This file contains the source code for CLI for the host interface. + */ + +static clib_error_t * +af_packet_create_command_fn (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + u8 *host_if_name = NULL; + u8 hwaddr[6]; + u8 *hw_addr_ptr = 0; + u32 sw_if_index; + int r; + clib_error_t *error = NULL; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "name %s", &host_if_name)) + ; + else + if (unformat + (line_input, "hw-addr %U", unformat_ethernet_address, hwaddr)) + hw_addr_ptr = hwaddr; + else + { + error = clib_error_return (0, "unknown input `%U'", + format_unformat_error, line_input); + goto done; + } + } + + if (host_if_name == NULL) + { + error = clib_error_return (0, "missing host interface name"); + goto done; + } + + r = af_packet_create_if (vm, host_if_name, hw_addr_ptr, &sw_if_index); + + if (r == VNET_API_ERROR_SYSCALL_ERROR_1) + { + error = clib_error_return (0, "%s (errno %d)", strerror (errno), errno); + goto done; + } + + if (r == VNET_API_ERROR_INVALID_INTERFACE) + { + error = clib_error_return (0, "Invalid interface name"); + goto done; + } + + if (r == VNET_API_ERROR_SUBIF_ALREADY_EXISTS) + { + error = clib_error_return (0, "Interface elready exists"); + goto done; + } + + vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (), + sw_if_index); + +done: + vec_free (host_if_name); + unformat_free (line_input); + + return error; +} + +/*? + * Create a host interface that will attach to a linux AF_PACKET + * interface, one side of a veth pair. The veth pair must already + * exist. Once created, a new host interface will exist in VPP + * with the name '<em>host-<ifname></em>', where '<em><ifname></em>' + * is the name of the specified veth pair. Use the + * '<em>show interface</em>' command to display host interface details. + * + * This command has the following optional parameters: + * + * - <b>hw-addr <mac-addr></b> - Optional ethernet address, can be in either + * X:X:X:X:X:X unix or X.X.X cisco format. + * + * @cliexpar + * Example of how to create a host interface tied to one side of an + * existing linux veth pair named vpp1: + * @cliexstart{create host-interface name vpp1} + * host-vpp1 + * @cliexend + * Once the host interface is created, enable the interface using: + * @cliexcmd{set interface state host-vpp1 up} +?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (af_packet_create_command, static) = { + .path = "create host-interface", + .short_help = "create host-interface name <ifname> [hw-addr <mac-addr>]", + .function = af_packet_create_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +af_packet_delete_command_fn (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + u8 *host_if_name = NULL; + clib_error_t *error = NULL; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "name %s", &host_if_name)) + ; + else + { + error = clib_error_return (0, "unknown input `%U'", + format_unformat_error, line_input); + goto done; + } + } + + if (host_if_name == NULL) + { + error = clib_error_return (0, "missing host interface name"); + goto done; + } + + af_packet_delete_if (vm, host_if_name); + +done: + vec_free (host_if_name); + unformat_free (line_input); + + return error; +} + +/*? + * Delete a host interface. Use the linux interface name to identify + * the host interface to be deleted. In VPP, host interfaces are + * named as '<em>host-<ifname></em>', where '<em><ifname></em>' + * is the name of the linux interface. + * + * @cliexpar + * Example of how to delete a host interface named host-vpp1: + * @cliexcmd{delete host-interface name vpp1} +?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (af_packet_delete_command, static) = { + .path = "delete host-interface", + .short_help = "delete host-interface name <ifname>", + .function = af_packet_delete_command_fn, +}; +/* *INDENT-ON* */ + +clib_error_t * +af_packet_cli_init (vlib_main_t * vm) +{ + return 0; +} + +VLIB_INIT_FUNCTION (af_packet_cli_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |