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/*
*------------------------------------------------------------------
* 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 <stdint.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vnet/ethernet/ethernet.h>
#include <netmap/net_netmap.h>
#include <netmap/netmap.h>
static clib_error_t *
netmap_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;
int r;
u8 is_pipe = 0;
u8 is_master = 0;
u32 sw_if_index = ~0;
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 if (unformat (line_input, "pipe"))
is_pipe = 1;
else if (unformat (line_input, "master"))
is_master = 1;
else if (unformat (line_input, "slave"))
is_master = 0;
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 =
netmap_create_if (vm, host_if_name, hw_addr_ptr, is_pipe, is_master,
&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 already exists");
goto done;
}
vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (),
sw_if_index);
done:
unformat_free (line_input);
return error;
}
/*?
* '<em>netmap</em>' is a framework for very fast packet I/O from userspace.
* '<em>VALE</em>' is an equally fast in-kernel software switch using the
* netmap API. '<em>netmap</em>' includes '<em>netmap pipes</em>', a shared
* memory packet transport channel. Together, they provide a high speed
* user-space interface that allows VPP to patch into a linux namespace, a
* linux container, or a physical NIC without the use of DPDK. Netmap/VALE
* generates the '<em>netmap.ko</em>' kernel module that needs to be loaded
* before netmap interfaces can be created.
* - https://github.com/luigirizzo/netmap - Netmap/VALE repo.
* - https://github.com/vpp-dev/netmap - VPP development package for Netmap/VALE,
* which is a snapshot of the Netmap/VALE repo with minor changes to work
* with containers and modified kernel drivers to work with NICs.
*
* Create a netmap interface that will attach to a linux interface.
* The interface must already exist. Once created, a new netmap interface
* will exist in VPP with the name '<em>netmap-<ifname></em>', where
* '<em><ifname></em>' takes one of two forms:
* - <b>ifname</b> - Linux interface to bind too.
* - <b>valeXXX:YYY</b> -
* - Where '<em>valeXXX</em>' is an arbitrary name for a VALE
* interface that must start with '<em>vale</em>' and is less
* than 16 characters.
* - Where '<em>YYY</em>' is an existing linux namespace.
*
* 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.
*
* - <b>pipe</b> - Optional flag to indicate that a '<em>netmap pipe</em>'
* instance should be created.
*
* - <b>master | slave</b> - Optional flag to indicate whether VPP should
* be the master or slave of the '<em>netmap pipe</em>'. Only considered
* if '<em>pipe</em>' is entered. Defaults to '<em>slave</em>' if not entered.
*
* @cliexpar
* Example of how to create a netmap interface tied to the linux
* namespace '<em>vpp1</em>':
* @cliexstart{create netmap name vale00:vpp1 hw-addr 02:FE:3F:34:15:9B pipe master}
* netmap-vale00:vpp1
* @cliexend
* Once the netmap interface is created, enable the interface using:
* @cliexcmd{set interface state netmap-vale00:vpp1 up}
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (netmap_create_command, static) = {
.path = "create netmap",
.short_help = "create netmap name <ifname>|valeXXX:YYY "
"[hw-addr <mac-addr>] [pipe] [master|slave]",
.function = netmap_create_command_fn,
};
/* *INDENT-ON* */
static clib_error_t *
netmap_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;
}
netmap_delete_if (vm, host_if_name);
done:
unformat_free (line_input);
return error;
}
/*?
* Delete a netmap interface. Use the '<em><ifname></em>' to identify
* the netmap interface to be deleted. In VPP, netmap interfaces are
* named as '<em>netmap-<ifname></em>', where '<em><ifname></em>'
* takes one of two forms:
* - <b>ifname</b> - Linux interface to bind too.
* - <b>valeXXX:YYY</b> -
* - Where '<em>valeXXX</em>' is an arbitrary name for a VALE
* interface that must start with '<em>vale</em>' and is less
* than 16 characters.
* - Where '<em>YYY</em>' is an existing linux namespace.
*
* @cliexpar
* Example of how to delete a netmap interface named '<em>netmap-vale00:vpp1</em>':
* @cliexcmd{delete netmap name vale00:vpp1}
?*/
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (netmap_delete_command, static) = {
.path = "delete netmap",
.short_help = "delete netmap name <ifname>|valeXXX:YYY",
.function = netmap_delete_command_fn,
};
/* *INDENT-ON* */
clib_error_t *
netmap_cli_init (vlib_main_t * vm)
{
return 0;
}
VLIB_INIT_FUNCTION (netmap_cli_init);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
