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Diffstat (limited to '')
| -rw-r--r-- | zebra/zebra_srv6_vty.c | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/zebra/zebra_srv6_vty.c b/zebra/zebra_srv6_vty.c new file mode 100644 index 0000000..62ce173 --- /dev/null +++ b/zebra/zebra_srv6_vty.c @@ -0,0 +1,402 @@ +/* + * Zebra SRv6 VTY functions + * Copyright (C) 2020 Hiroki Shirokura, LINE Corporation + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; see the file COPYING; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <zebra.h> + +#include "memory.h" +#include "if.h" +#include "prefix.h" +#include "command.h" +#include "table.h" +#include "rib.h" +#include "nexthop.h" +#include "vrf.h" +#include "srv6.h" +#include "lib/json.h" + +#include "zebra/zserv.h" +#include "zebra/zebra_router.h" +#include "zebra/zebra_vrf.h" +#include "zebra/zebra_srv6.h" +#include "zebra/zebra_srv6_vty.h" +#include "zebra/zebra_rnh.h" +#include "zebra/redistribute.h" +#include "zebra/zebra_routemap.h" +#include "zebra/zebra_dplane.h" + +#ifndef VTYSH_EXTRACT_PL +#include "zebra/zebra_srv6_vty_clippy.c" +#endif + +static int zebra_sr_config(struct vty *vty); + +static struct cmd_node sr_node = { + .name = "sr", + .node = SEGMENT_ROUTING_NODE, + .parent_node = CONFIG_NODE, + .prompt = "%s(config-sr)# ", + .config_write = zebra_sr_config, +}; + +static struct cmd_node srv6_node = { + .name = "srv6", + .node = SRV6_NODE, + .parent_node = SEGMENT_ROUTING_NODE, + .prompt = "%s(config-srv6)# ", + +}; + +static struct cmd_node srv6_locs_node = { + .name = "srv6-locators", + .node = SRV6_LOCS_NODE, + .parent_node = SRV6_NODE, + .prompt = "%s(config-srv6-locators)# ", +}; + +static struct cmd_node srv6_loc_node = { + .name = "srv6-locator", + .node = SRV6_LOC_NODE, + .parent_node = SRV6_LOCS_NODE, + .prompt = "%s(config-srv6-locator)# " +}; + +DEFUN (show_srv6_locator, + show_srv6_locator_cmd, + "show segment-routing srv6 locator [json]", + SHOW_STR + "Segment Routing\n" + "Segment Routing SRv6\n" + "Locator Information\n" + JSON_STR) +{ + const bool uj = use_json(argc, argv); + struct zebra_srv6 *srv6 = zebra_srv6_get_default(); + struct srv6_locator *locator; + struct listnode *node; + char str[256]; + int id; + json_object *json = NULL; + json_object *json_locators = NULL; + json_object *json_locator = NULL; + + if (uj) { + json = json_object_new_object(); + json_locators = json_object_new_array(); + json_object_object_add(json, "locators", json_locators); + + for (ALL_LIST_ELEMENTS_RO(srv6->locators, node, locator)) { + json_locator = srv6_locator_json(locator); + if (!json_locator) + continue; + json_object_array_add(json_locators, json_locator); + + } + + vty_json(vty, json); + } else { + vty_out(vty, "Locator:\n"); + vty_out(vty, "Name ID Prefix Status\n"); + vty_out(vty, "-------------------- ------- ------------------------ -------\n"); + + id = 1; + for (ALL_LIST_ELEMENTS_RO(srv6->locators, node, locator)) { + prefix2str(&locator->prefix, str, sizeof(str)); + vty_out(vty, "%-20s %7d %-24s %s\n", + locator->name, id, str, + locator->status_up ? "Up" : "Down"); + ++id; + } + vty_out(vty, "\n"); + } + + return CMD_SUCCESS; +} + +DEFUN (show_srv6_locator_detail, + show_srv6_locator_detail_cmd, + "show segment-routing srv6 locator NAME detail [json]", + SHOW_STR + "Segment Routing\n" + "Segment Routing SRv6\n" + "Locator Information\n" + "Locator Name\n" + "Detailed information\n" + JSON_STR) +{ + const bool uj = use_json(argc, argv); + struct zebra_srv6 *srv6 = zebra_srv6_get_default(); + struct srv6_locator *locator; + struct listnode *node; + char str[256]; + const char *locator_name = argv[4]->arg; + json_object *json_locator = NULL; + + if (uj) { + locator = zebra_srv6_locator_lookup(locator_name); + if (!locator) + return CMD_WARNING; + + json_locator = srv6_locator_detailed_json(locator); + vty_json(vty, json_locator); + return CMD_SUCCESS; + } + + for (ALL_LIST_ELEMENTS_RO(srv6->locators, node, locator)) { + struct listnode *node; + struct srv6_locator_chunk *chunk; + + if (strcmp(locator->name, locator_name) != 0) + continue; + + prefix2str(&locator->prefix, str, sizeof(str)); + vty_out(vty, "Name: %s\n", locator->name); + vty_out(vty, "Prefix: %s\n", str); + vty_out(vty, "Function-Bit-Len: %u\n", + locator->function_bits_length); + + vty_out(vty, "Chunks:\n"); + for (ALL_LIST_ELEMENTS_RO((struct list *)locator->chunks, node, + chunk)) { + prefix2str(&chunk->prefix, str, sizeof(str)); + vty_out(vty, "- prefix: %s, owner: %s\n", str, + zebra_route_string(chunk->proto)); + } + } + + + return CMD_SUCCESS; +} + +DEFUN_NOSH (segment_routing, + segment_routing_cmd, + "segment-routing", + "Segment Routing\n") +{ + vty->node = SEGMENT_ROUTING_NODE; + return CMD_SUCCESS; +} + +DEFUN_NOSH (srv6, + srv6_cmd, + "srv6", + "Segment Routing SRv6\n") +{ + vty->node = SRV6_NODE; + return CMD_SUCCESS; +} + +DEFUN (no_srv6, + no_srv6_cmd, + "no srv6", + NO_STR + "Segment Routing SRv6\n") +{ + struct zebra_srv6 *srv6 = zebra_srv6_get_default(); + struct srv6_locator *locator; + struct listnode *node, *nnode; + + for (ALL_LIST_ELEMENTS(srv6->locators, node, nnode, locator)) + zebra_srv6_locator_delete(locator); + return CMD_SUCCESS; +} + +DEFUN_NOSH (srv6_locators, + srv6_locators_cmd, + "locators", + "Segment Routing SRv6 locators\n") +{ + vty->node = SRV6_LOCS_NODE; + return CMD_SUCCESS; +} + +DEFUN_NOSH (srv6_locator, + srv6_locator_cmd, + "locator WORD", + "Segment Routing SRv6 locator\n" + "Specify locator-name\n") +{ + struct srv6_locator *locator = NULL; + + locator = zebra_srv6_locator_lookup(argv[1]->arg); + if (locator) { + VTY_PUSH_CONTEXT(SRV6_LOC_NODE, locator); + locator->status_up = true; + return CMD_SUCCESS; + } + + locator = srv6_locator_alloc(argv[1]->arg); + if (!locator) { + vty_out(vty, "%% Alloc failed\n"); + return CMD_WARNING_CONFIG_FAILED; + } + locator->status_up = true; + + VTY_PUSH_CONTEXT(SRV6_LOC_NODE, locator); + vty->node = SRV6_LOC_NODE; + return CMD_SUCCESS; +} + +DEFUN (no_srv6_locator, + no_srv6_locator_cmd, + "no locator WORD", + NO_STR + "Segment Routing SRv6 locator\n" + "Specify locator-name\n") +{ + struct srv6_locator *locator = zebra_srv6_locator_lookup(argv[2]->arg); + if (!locator) { + vty_out(vty, "%% Can't find SRv6 locator\n"); + return CMD_WARNING_CONFIG_FAILED; + } + + zebra_srv6_locator_delete(locator); + return CMD_SUCCESS; +} + +DEFPY (locator_prefix, + locator_prefix_cmd, + "prefix X:X::X:X/M$prefix [func-bits (16-64)$func_bit_len]", + "Configure SRv6 locator prefix\n" + "Specify SRv6 locator prefix\n" + "Configure SRv6 locator function length in bits\n" + "Specify SRv6 locator function length in bits\n") +{ + VTY_DECLVAR_CONTEXT(srv6_locator, locator); + struct srv6_locator_chunk *chunk = NULL; + struct listnode *node = NULL; + + locator->prefix = *prefix; + + /* + * TODO(slankdev): please support variable node-bit-length. + * In draft-ietf-bess-srv6-services-05#section-3.2.1. + * Locator block length and Locator node length are defined. + * Which are defined as "locator-len == block-len + node-len". + * In current implementation, node bits length is hardcoded as 24. + * It should be supported various val. + * + * Cisco IOS-XR support only following pattern. + * (1) Teh locator length should be 64-bits long. + * (2) The SID block portion (MSBs) cannot exceed 40 bits. + * If this value is less than 40 bits, + * user should use a pattern of zeros as a filler. + * (3) The Node Id portion (LSBs) cannot exceed 24 bits. + */ + locator->block_bits_length = prefix->prefixlen - 24; + locator->node_bits_length = 24; + locator->function_bits_length = func_bit_len; + locator->argument_bits_length = 0; + + if (list_isempty(locator->chunks)) { + chunk = srv6_locator_chunk_alloc(); + chunk->prefix = *prefix; + chunk->proto = 0; + listnode_add(locator->chunks, chunk); + } else { + for (ALL_LIST_ELEMENTS_RO(locator->chunks, node, chunk)) { + uint8_t zero[16] = {0}; + + if (memcmp(&chunk->prefix.prefix, zero, 16) == 0) { + struct zserv *client; + struct listnode *client_node; + + chunk->prefix = *prefix; + for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, + client_node, + client)) { + struct srv6_locator *tmp; + + if (client->proto != chunk->proto) + continue; + + srv6_manager_get_locator_chunk_call( + &tmp, client, + locator->name, + VRF_DEFAULT); + } + } + } + } + + zebra_srv6_locator_add(locator); + return CMD_SUCCESS; +} + +static int zebra_sr_config(struct vty *vty) +{ + struct zebra_srv6 *srv6 = zebra_srv6_get_default(); + struct listnode *node; + struct srv6_locator *locator; + char str[256]; + + vty_out(vty, "!\n"); + if (zebra_srv6_is_enable()) { + vty_out(vty, "segment-routing\n"); + vty_out(vty, " srv6\n"); + vty_out(vty, " locators\n"); + for (ALL_LIST_ELEMENTS_RO(srv6->locators, node, locator)) { + inet_ntop(AF_INET6, &locator->prefix.prefix, + str, sizeof(str)); + vty_out(vty, " locator %s\n", locator->name); + vty_out(vty, " prefix %s/%u", str, + locator->prefix.prefixlen); + if (locator->function_bits_length) + vty_out(vty, " func-bits %u", + locator->function_bits_length); + vty_out(vty, "\n"); + vty_out(vty, " exit\n"); + vty_out(vty, " !\n"); + } + vty_out(vty, " exit\n"); + vty_out(vty, " !\n"); + vty_out(vty, " exit\n"); + vty_out(vty, " !\n"); + vty_out(vty, "exit\n"); + vty_out(vty, "!\n"); + } + return 0; +} + +void zebra_srv6_vty_init(void) +{ + /* Install nodes and its default commands */ + install_node(&sr_node); + install_node(&srv6_node); + install_node(&srv6_locs_node); + install_node(&srv6_loc_node); + install_default(SEGMENT_ROUTING_NODE); + install_default(SRV6_NODE); + install_default(SRV6_LOCS_NODE); + install_default(SRV6_LOC_NODE); + + /* Command for change node */ + install_element(CONFIG_NODE, &segment_routing_cmd); + install_element(SEGMENT_ROUTING_NODE, &srv6_cmd); + install_element(SEGMENT_ROUTING_NODE, &no_srv6_cmd); + install_element(SRV6_NODE, &srv6_locators_cmd); + install_element(SRV6_LOCS_NODE, &srv6_locator_cmd); + install_element(SRV6_LOCS_NODE, &no_srv6_locator_cmd); + + /* Command for configuration */ + install_element(SRV6_LOC_NODE, &locator_prefix_cmd); + + /* Command for operation */ + install_element(VIEW_NODE, &show_srv6_locator_cmd); + install_element(VIEW_NODE, &show_srv6_locator_detail_cmd); +} |