diff options
Diffstat (limited to 'src/vnet/devices/netmap/cli.c')
| -rw-r--r-- | src/vnet/devices/netmap/cli.c | 68 |
1 files changed, 65 insertions, 3 deletions
diff --git a/src/vnet/devices/netmap/cli.c b/src/vnet/devices/netmap/cli.c index 68695250506..6157f27c77f 100644 --- a/src/vnet/devices/netmap/cli.c +++ b/src/vnet/devices/netmap/cli.c @@ -83,11 +83,57 @@ netmap_create_command_fn (vlib_main_t * vm, unformat_input_t * input, return 0; } +/*? + * '<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 [<intf name>|valeXXX:YYY] " - "[hw-addr <mac>] [pipe] [master|slave]", + .short_help = "create netmap name <ifname>|valeXXX:YYY " + "[hw-addr <mac-addr>] [pipe] [master|slave]", .function = netmap_create_command_fn, }; /* *INDENT-ON* */ @@ -121,10 +167,26 @@ netmap_delete_command_fn (vlib_main_t * vm, unformat_input_t * input, return 0; } +/*? + * 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 <interface name>", + .short_help = "delete netmap name <ifname>|valeXXX:YYY", .function = netmap_delete_command_fn, }; /* *INDENT-ON* */ |