diff options
Diffstat (limited to 'extras/deprecated/plugins/l2e/l2e.c')
| -rw-r--r-- | extras/deprecated/plugins/l2e/l2e.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/extras/deprecated/plugins/l2e/l2e.c b/extras/deprecated/plugins/l2e/l2e.c new file mode 100644 index 00000000000..4c6eac50446 --- /dev/null +++ b/extras/deprecated/plugins/l2e/l2e.c @@ -0,0 +1,198 @@ +/* + * l2e.c : Extract L3 packets from the L2 input and feed + * them into the L3 path. + * + * Copyright (c) 2013 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 <plugins/l2e/l2e.h> +#include <vnet/l2/l2_input.h> +#include <vnet/l2/feat_bitmap.h> +#include <vnet/ip/ip.h> + +l2_emulation_main_t l2_emulation_main; + +/** + * A zero'd out struct we can use in the vec_validate + */ +static const l2_emulation_t ezero = { }; + +__clib_export void +l2_emulation_enable (u32 sw_if_index) +{ + l2_emulation_main_t *em = &l2_emulation_main; + vec_validate_init_empty (em->l2_emulations, sw_if_index, ezero); + + l2_emulation_t *l23e = &em->l2_emulations[sw_if_index]; + + l23e->enabled = 1; + + /* + * L3 enable the interface - using IP unnumbered from the control + * plane may not be possible since there may be no BVI interface + * to which to unnumber + */ + ip4_sw_interface_enable_disable (sw_if_index, 1); + ip6_sw_interface_enable_disable (sw_if_index, 1); + + l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_L2_EMULATION, 1); +} + + +__clib_export void +l2_emulation_disable (u32 sw_if_index) +{ + l2_emulation_main_t *em = &l2_emulation_main; + if (vec_len (em->l2_emulations) >= sw_if_index) + { + l2_emulation_t *l23e = &em->l2_emulations[sw_if_index]; + clib_memset (l23e, 0, sizeof (*l23e)); + + l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_L2_EMULATION, 0); + ip4_sw_interface_enable_disable (sw_if_index, 0); + ip6_sw_interface_enable_disable (sw_if_index, 0); + } +} + +static clib_error_t * +l2_emulation_interface_add_del (vnet_main_t * vnm, + u32 sw_if_index, u32 is_add) +{ + l2_emulation_main_t *em = &l2_emulation_main; + if (is_add) + { + vec_validate_init_empty (em->l2_emulations, sw_if_index, ezero); + } + + return (NULL); +} + +VNET_SW_INTERFACE_ADD_DEL_FUNCTION (l2_emulation_interface_add_del); + +static clib_error_t * +l2_emulation_cli (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + vnet_main_t *vnm = vnet_get_main (); + u32 sw_if_index = ~0; + u8 enable = 1; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "%U", unformat_vnet_sw_interface, + vnm, &sw_if_index)) + ; + else if (unformat (input, "enable")) + enable = 1; + else if (unformat (input, "disable")) + enable = 0; + else + break; + } + + if (~0 == sw_if_index) + return clib_error_return (0, "interface must be specified"); + + if (enable) + l2_emulation_enable (sw_if_index); + else + l2_emulation_disable (sw_if_index); + + return (NULL); +} + +/*? + * Configure l2 emulation. + * When the interface is in L2 mode, configure the extraction of L3 + * packets out of the L2 path and into the L3 path. + * + * @cliexpar + * @cliexstart{set interface l2 input l2-emulation <interface-name> [disable]} + * @cliexend + ?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (l2_emulation_cli_node, static) = { + .path = "set interface l2 l2-emulation", + .short_help = + "set interface l2 l2-emulation <interface-name> [disable|enable]\n", + .function = l2_emulation_cli, +}; +/* *INDENT-ON* */ + +static clib_error_t * +l2_emulation_show (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + l2_emulation_main_t *em = &l2_emulation_main; + vnet_main_t *vnm = vnet_get_main (); + l2_emulation_t *l23e; + u32 sw_if_index; + + vec_foreach_index (sw_if_index, em->l2_emulations) + { + l23e = &em->l2_emulations[sw_if_index]; + if (l23e->enabled) + { + vlib_cli_output (vm, "%U\n", + format_vnet_sw_if_index_name, vnm, sw_if_index); + } + } + return (NULL); +} + +/*? + * Show l2 emulation. + * When the interface is in L2 mode, configure the extraction of L3 + * packets out of the L2 path and into the L3 path. + * + * @cliexpar + * @cliexstart{show interface l2 l2-emulation} + * @cliexend + ?*/ +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (l2_emulation_show_node, static) = { + .path = "show interface l2 l2-emulation", + .short_help = "show interface l2 l2-emulation\n", + .function = l2_emulation_show, +}; +/* *INDENT-ON* */ + +static clib_error_t * +l2_emulation_init (vlib_main_t * vm) +{ + l2_emulation_main_t *em = &l2_emulation_main; + vlib_node_t *node; + + node = vlib_get_node_by_name (vm, (u8 *) "l2-emulation"); + em->l2_emulation_node_index = node->index; + + /* Initialize the feature next-node indexes */ + feat_bitmap_init_next_nodes (vm, + em->l2_emulation_node_index, + L2INPUT_N_FEAT, + l2input_get_feat_names (), + em->l2_input_feat_next); + + return 0; +} + +VLIB_INIT_FUNCTION (l2_emulation_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |