+++ /dev/null
-/*
- *------------------------------------------------------------------
- * 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;
- af_packet_create_if_arg_t _arg, *arg = &_arg;
- clib_error_t *error = NULL;
- u8 hwaddr[6];
- int r;
-
- clib_memset (arg, 0, sizeof (*arg));
-
- // Default mode
- arg->mode = AF_PACKET_IF_MODE_ETHERNET;
-
- // Default number of rx/tx queue(s)
- arg->num_rxqs = 1;
- arg->num_txqs = 1;
-
- // Default flags
- arg->flags = AF_PACKET_IF_FLAGS_QDISC_BYPASS | AF_PACKET_IF_FLAGS_CKSUM_GSO;
-
- /* 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", &arg->host_if_name))
- ;
- else if (unformat (line_input, "rx-size %u", &arg->rx_frame_size))
- ;
- else if (unformat (line_input, "tx-size %u", &arg->tx_frame_size))
- ;
- else if (unformat (line_input, "rx-per-block %u",
- &arg->rx_frames_per_block))
- ;
- else if (unformat (line_input, "tx-per-block %u",
- &arg->tx_frames_per_block))
- ;
- else if (unformat (line_input, "num-rx-queues %u", &arg->num_rxqs))
- ;
- else if (unformat (line_input, "num-tx-queues %u", &arg->num_txqs))
- ;
- else if (unformat (line_input, "qdisc-bypass-disable"))
- arg->flags &= ~AF_PACKET_IF_FLAGS_QDISC_BYPASS;
- else if (unformat (line_input, "cksum-gso-disable"))
- arg->flags &= ~AF_PACKET_IF_FLAGS_CKSUM_GSO;
- else if (unformat (line_input, "mode ip"))
- arg->mode = AF_PACKET_IF_MODE_IP;
- else if (unformat (line_input, "v2"))
- arg->is_v2 = 1;
- else if (unformat (line_input, "hw-addr %U", unformat_ethernet_address,
- hwaddr))
- arg->hw_addr = hwaddr;
- else
- {
- error = clib_error_return (0, "unknown input `%U'",
- format_unformat_error, line_input);
- goto done;
- }
- }
-
- if (arg->host_if_name == NULL)
- {
- error = clib_error_return (0, "missing host interface name");
- goto done;
- }
-
- r = af_packet_create_if (arg);
-
- 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 already exists");
- goto done;
- }
-
- vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (),
- arg->sw_if_index);
-
-done:
- vec_free (arg->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}
-?*/
-VLIB_CLI_COMMAND (af_packet_create_command, static) = {
- .path = "create host-interface",
- .short_help = "create host-interface [v2] name <ifname> [num-rx-queues <n>] "
- "[num-tx-queues <n>] [hw-addr <mac-addr>] [mode ip] "
- "[qdisc-bypass-disable] [cksum-gso-disable]",
- .function = af_packet_create_command_fn,
-};
-
-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 (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}
-?*/
-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,
-};
-
-static clib_error_t *
-af_packet_set_l4_cksum_offload_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 set = 0;
- clib_error_t *error = NULL;
- vnet_main_t *vnm = vnet_get_main ();
- u32 sw_if_index;
-
- 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, "%U", unformat_vnet_sw_interface, vnm,
- &sw_if_index))
- ;
- else if (unformat (line_input, "on"))
- set = 1;
- else if (unformat (line_input, "off"))
- set = 0;
- else
- {
- error = clib_error_return (0, "unknown input '%U'",
- format_unformat_error, line_input);
- goto done;
- }
- }
-
- if (af_packet_set_l4_cksum_offload (sw_if_index, set) < 0)
- error = clib_error_return (0, "not an af_packet interface");
-
-done:
- unformat_free (line_input);
- return error;
-}
-
-/*?
- * Set TCP/UDP offload checksum calculation. Use interface
- * name to identify the interface to set TCP/UDP offload checksum
- * calculation.
- *
- * @cliexpar
- * Example of how to set TCP/UDP offload checksum calculation on host-vpp0:
- * @cliexcmd{set host-interface l4-cksum-offload host-vpp0 off}
- * @cliexcmd{set host-interface l4-cksum-offload host-vpp0 on}
-?*/
-VLIB_CLI_COMMAND (af_packet_set_l4_cksum_offload_command, static) = {
- .path = "set host-interface l4-cksum-offload",
- .short_help = "set host-interface l4-cksum-offload <host-if-name> <on|off>",
- .function = af_packet_set_l4_cksum_offload_command_fn,
-};
-
-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:
- */
Code Review / vpp.git / blobdiff