diff options
Diffstat (limited to 'src/plugins/lisp/lisp-gpe/lisp_gpe.c')
| -rw-r--r-- | src/plugins/lisp/lisp-gpe/lisp_gpe.c | 728 |
1 files changed, 728 insertions, 0 deletions
diff --git a/src/plugins/lisp/lisp-gpe/lisp_gpe.c b/src/plugins/lisp/lisp-gpe/lisp_gpe.c new file mode 100644 index 00000000000..1f087fd0625 --- /dev/null +++ b/src/plugins/lisp/lisp-gpe/lisp_gpe.c @@ -0,0 +1,728 @@ +/* + * 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. + */ +/** + * @file + * @brief Common utility functions for IPv4, IPv6 and L2 LISP-GPE tunnels. + * + */ + +#include <lisp/lisp-gpe/lisp_gpe.h> +#include <lisp/lisp-gpe/lisp_gpe_fwd_entry.h> +#include <lisp/lisp-gpe/lisp_gpe_adjacency.h> +#include <lisp/lisp-gpe/lisp_gpe_tenant.h> +#include <vnet/fib/fib_path_list.h> +#include <vnet/fib/fib_table.h> +#include <vnet/fib/fib_internal.h> + +/** LISP-GPE global state */ +lisp_gpe_main_t lisp_gpe_main; + + +/** CLI command to add/del forwarding entry. */ +static clib_error_t * +lisp_gpe_add_del_fwd_entry_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 is_add = 1; + ip_address_t lloc, rloc; + clib_error_t *error = 0; + gid_address_t _reid, *reid = &_reid, _leid, *leid = &_leid; + u8 reid_set = 0, leid_set = 0, is_negative = 0, dp_table_set = 0, + vni_set = 0; + u32 vni = 0, dp_table = 0, action = ~0, w; + locator_pair_t pair, *pairs = 0; + int rv; + + clib_memset (leid, 0, sizeof (*leid)); + clib_memset (reid, 0, sizeof (*reid)); + + /* 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, "del")) + is_add = 0; + else if (unformat (line_input, "add")) + is_add = 1; + else if (unformat (line_input, "leid %U", unformat_gid_address, leid)) + { + leid_set = 1; + } + else if (unformat (line_input, "reid %U", unformat_gid_address, reid)) + { + reid_set = 1; + } + else if (unformat (line_input, "vni %u", &vni)) + { + gid_address_vni (leid) = vni; + gid_address_vni (reid) = vni; + vni_set = 1; + } + else if (unformat (line_input, "vrf %u", &dp_table)) + { + dp_table_set = 1; + } + else if (unformat (line_input, "bd %u", &dp_table)) + { + dp_table_set = 1; + } + else if (unformat (line_input, "negative action %U", + unformat_negative_mapping_action, &action)) + { + is_negative = 1; + } + else if (unformat (line_input, "loc-pair %U %U w %d", + unformat_ip_address, &lloc, + unformat_ip_address, &rloc, &w)) + { + ip_address_copy (&pair.lcl_loc, &lloc); + ip_address_copy (&pair.rmt_loc, &rloc); + pair.weight = w; + pair.priority = 0; + vec_add1 (pairs, pair); + } + else + { + error = unformat_parse_error (line_input); + vlib_cli_output (vm, "parse error: '%U'", + format_unformat_error, line_input); + goto done; + } + } + + if (!reid_set) + { + vlib_cli_output (vm, "remote eid must be set!"); + goto done; + } + + if (gid_address_type (reid) != GID_ADDR_NSH && (!vni_set || !dp_table_set)) + { + vlib_cli_output (vm, "vni and vrf/bd must be set!"); + goto done; + } + + if (is_negative) + { + if (~0 == action) + { + vlib_cli_output (vm, "no action set for negative tunnel!"); + goto done; + } + } + else + { + if (vec_len (pairs) == 0) + { + vlib_cli_output (vm, "expected ip4/ip6 locators"); + goto done; + } + } + + if (!leid_set) + { + /* if leid not set, make sure it's the same AFI like reid */ + gid_address_type (leid) = gid_address_type (reid); + if (GID_ADDR_IP_PREFIX == gid_address_type (reid)) + gid_address_ip_version (leid) = gid_address_ip_version (reid); + } + + /* add fwd entry */ + vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a; + clib_memset (a, 0, sizeof (a[0])); + + a->is_add = is_add; + a->is_negative = is_negative; + a->vni = vni; + a->table_id = dp_table; + gid_address_copy (&a->lcl_eid, leid); + gid_address_copy (&a->rmt_eid, reid); + a->locator_pairs = pairs; + a->action = action; + + rv = vnet_lisp_gpe_add_del_fwd_entry (a, 0); + if (0 != rv) + { + vlib_cli_output (vm, "failed to %s gpe tunnel!", + is_add ? "add" : "delete"); + } + +done: + unformat_free (line_input); + vec_free (pairs); + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_gpe_add_del_fwd_entry_command, static) = { + .path = "gpe entry", + .short_help = "gpe entry add/del vni <vni> vrf/bd <id> [leid <leid>]" + "reid <reid> [loc-pair <lloc> <rloc> w <weight>] " + "[negative action <action>]", + .function = lisp_gpe_add_del_fwd_entry_command_fn, +}; +/* *INDENT-ON* */ + +/** Check if LISP-GPE is enabled. */ +u8 +vnet_lisp_gpe_enable_disable_status (void) +{ + lisp_gpe_main_t *lgm = &lisp_gpe_main; + + return lgm->is_en; +} + +/** Enable/disable LISP-GPE. */ +clib_error_t * +vnet_lisp_gpe_enable_disable (vnet_lisp_gpe_enable_disable_args_t * a) +{ + lisp_gpe_main_t *lgm = &lisp_gpe_main; + vlib_main_t *vm = vlib_get_main (); + + if (a->is_en) + { + lgm->is_en = 1; + udp_register_dst_port (vm, UDP_DST_PORT_lisp_gpe, + lisp_gpe_ip4_input_node.index, 1 /* is_ip4 */ ); + udp_register_dst_port (vm, UDP_DST_PORT_lisp_gpe6, + lisp_gpe_ip6_input_node.index, 0 /* is_ip4 */ ); + } + else + { + /* remove all entries */ + vnet_lisp_gpe_fwd_entry_flush (); + + /* disable all l3 ifaces */ + lisp_gpe_tenant_flush (); + + udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_gpe, 0 /* is_ip4 */ ); + udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_gpe6, 1 /* is_ip4 */ ); + lgm->is_en = 0; + } + + return 0; +} + +/** Set GPE encapsulation mode. */ +int +vnet_gpe_set_encap_mode (gpe_encap_mode_t mode) +{ + lisp_gpe_main_t *lgm = &lisp_gpe_main; + + if (mode >= GPE_ENCAP_COUNT) + return VNET_API_ERROR_INVALID_GPE_MODE; + + if (pool_elts (lgm->lisp_fwd_entry_pool) != 0) + return VNET_API_ERROR_LISP_GPE_ENTRIES_PRESENT; + + lgm->encap_mode = mode; + return 0; +} + +/** CLI command to set GPE encap */ +static clib_error_t * +gpe_set_encap_mode_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + gpe_encap_mode_t mode = GPE_ENCAP_COUNT; + vnet_api_error_t rv; + + /* 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, "lisp")) + mode = GPE_ENCAP_LISP; + else if (unformat (line_input, "vxlan")) + mode = GPE_ENCAP_VXLAN; + else + { + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + } + rv = vnet_gpe_set_encap_mode (mode); + if (rv) + { + return clib_error_return (0, + "Error: invalid mode or GPE entries are present!"); + } + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (gpe_set_encap_mode_command, static) = { + .path = "gpe encap", + .short_help = "gpe encap [lisp|vxlan]", + .function = gpe_set_encap_mode_command_fn, +}; +/* *INDENT-ON* */ + +/** Format GPE encap mode. */ +u8 * +format_vnet_gpe_encap_mode (u8 * s, va_list * args) +{ + lisp_gpe_main_t *lgm = &lisp_gpe_main; + + switch (lgm->encap_mode) + { + case GPE_ENCAP_LISP: + return format (s, "lisp"); + case GPE_ENCAP_VXLAN: + return format (s, "vxlan"); + default: + return 0; + } + return 0; +} + +/** CLI command to show GPE encap */ +static clib_error_t * +gpe_show_encap_mode_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + vlib_cli_output (vm, "encap mode: %U", format_vnet_gpe_encap_mode); + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (gpe_show_encap_mode_command, static) = { + .path = "show gpe encap", + .short_help = "show GPE encapulation mode", + .function = gpe_show_encap_mode_command_fn, +}; +/* *INDENT-ON* */ + +/** CLI command to enable/disable LISP-GPE. */ +static clib_error_t * +lisp_gpe_enable_disable_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 is_en = 1; + vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a; + clib_error_t *error = NULL; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return clib_error_return (0, "expected enable | disable"); + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "enable")) + is_en = 1; + else if (unformat (line_input, "disable")) + is_en = 0; + else + { + error = clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + goto done; + } + } + a->is_en = is_en; + error = vnet_lisp_gpe_enable_disable (a); + +done: + unformat_free (line_input); + + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (enable_disable_lisp_gpe_command, static) = { + .path = "gpe", + .short_help = "gpe [enable|disable]", + .function = lisp_gpe_enable_disable_command_fn, +}; +/* *INDENT-ON* */ + +/** CLI command to show LISP-GPE interfaces. */ +static clib_error_t * +lisp_show_iface_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + lisp_gpe_main_t *lgm = &lisp_gpe_main; + hash_pair_t *p; + + vlib_cli_output (vm, "%=10s%=12s", "vrf", "hw_if_index"); + + /* *INDENT-OFF* */ + hash_foreach_pair (p, lgm->l3_ifaces.hw_if_index_by_dp_table, ({ + vlib_cli_output (vm, "%=10d%=10d", p->key, p->value[0]); + })); + /* *INDENT-ON* */ + + if (0 != lgm->l2_ifaces.hw_if_index_by_dp_table) + { + vlib_cli_output (vm, "%=10s%=12s", "bd_id", "hw_if_index"); + /* *INDENT-OFF* */ + hash_foreach_pair (p, lgm->l2_ifaces.hw_if_index_by_dp_table, ({ + vlib_cli_output (vm, "%=10d%=10d", p->key, p->value[0]); + })); + /* *INDENT-ON* */ + } + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_show_iface_command) = { + .path = "show gpe interface", + .short_help = "show gpe interface", + .function = lisp_show_iface_command_fn, +}; +/* *INDENT-ON* */ + +/** CLI command to show GPE fwd native route path. */ +static clib_error_t * +gpe_show_native_fwd_rpath_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + lisp_gpe_main_t *lgm = &lisp_gpe_main; + fib_route_path_t *rpath; + + if (vec_len (lgm->native_fwd_rpath[AF_IP4])) + { + vec_foreach (rpath, lgm->native_fwd_rpath[AF_IP4]) + { + vlib_cli_output (vm, "nh: %U fib_index %u sw_if_index %u", + format_ip46_address, &rpath->frp_addr, + IP46_TYPE_IP4, rpath->frp_fib_index, + rpath->frp_sw_if_index); + } + } + if (vec_len (lgm->native_fwd_rpath[AF_IP6])) + { + vec_foreach (rpath, lgm->native_fwd_rpath[AF_IP6]) + { + vlib_cli_output (vm, "nh: %U fib_index %u sw_if_index %u", + format_ip46_address, &rpath->frp_addr, IP46_TYPE_IP6, + rpath->frp_fib_index, rpath->frp_sw_if_index); + } + } + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (gpe_show_native_fwd_rpath_command) = { + .path = "show gpe native-forward", + .short_help = "show gpe native-forward", + .function = gpe_show_native_fwd_rpath_command_fn, +}; +/* *INDENT-ON* */ + +void +gpe_update_native_fwd_path (u8 ip_version) +{ + lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main (); + lisp_gpe_fwd_entry_t *lfe; + fib_prefix_t fib_prefix; + u32 *lfei; + + vec_foreach (lfei, lgm->native_fwd_lfes[ip_version]) + { + lfe = pool_elt_at_index (lgm->lisp_fwd_entry_pool, lfei[0]); + ip_prefix_to_fib_prefix (&lfe->key->rmt.ippref, &fib_prefix); + fib_table_entry_update (lfe->eid_fib_index, &fib_prefix, FIB_SOURCE_LISP, + FIB_ENTRY_FLAG_NONE, + lgm->native_fwd_rpath[ip_version]); + } +} + +int +vnet_gpe_add_del_native_fwd_rpath (vnet_gpe_native_fwd_rpath_args_t * a) +{ + lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main (); + fib_route_path_t *rpath; + u8 ip_version; + + ip_version = a->rpath.frp_proto == DPO_PROTO_IP4 ? AF_IP4 : AF_IP6; + + if (a->is_add) + { + vec_add1 (lgm->native_fwd_rpath[ip_version], a->rpath); + } + else + { + vec_foreach (rpath, lgm->native_fwd_rpath[ip_version]) + { + if (!fib_route_path_cmp (rpath, &a->rpath)) + { + vec_del1 (lgm->native_fwd_rpath[ip_version], + rpath - lgm->native_fwd_rpath[ip_version]); + break; + } + } + } + gpe_update_native_fwd_path (ip_version); + return 0; +} + +/** + * CLI command to add action for native forward. + */ +static clib_error_t * +gpe_native_forward_command_fn (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + vnet_main_t *vnm = vnet_get_main (); + unformat_input_t _line_input, *line_input = &_line_input; + vnet_api_error_t rv; + fib_route_path_t rpath; + u32 table_id = ~0; + vnet_gpe_native_fwd_rpath_args_t _a, *a = &_a; + u8 is_add = 1; + clib_error_t *error = 0; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + clib_memset (&rpath, 0, sizeof (rpath)); + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "table %d", &table_id)) + ; + else if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "via %U %U", + unformat_ip4_address, + &rpath.frp_addr.ip4, + unformat_vnet_sw_interface, vnm, + &rpath.frp_sw_if_index)) + { + rpath.frp_weight = 1; + rpath.frp_proto = DPO_PROTO_IP4; + } + else if (unformat (line_input, "via %U %U", + unformat_ip6_address, + &rpath.frp_addr.ip6, + unformat_vnet_sw_interface, vnm, + &rpath.frp_sw_if_index)) + { + rpath.frp_weight = 1; + rpath.frp_proto = DPO_PROTO_IP6; + } + else if (unformat (line_input, "via %U", + unformat_ip4_address, &rpath.frp_addr.ip4)) + { + rpath.frp_weight = 1; + rpath.frp_sw_if_index = ~0; + rpath.frp_proto = DPO_PROTO_IP4; + } + else if (unformat (line_input, "via %U", + unformat_ip6_address, &rpath.frp_addr.ip6)) + { + rpath.frp_weight = 1; + rpath.frp_sw_if_index = ~0; + rpath.frp_proto = DPO_PROTO_IP6; + } + else + { + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + } + + if ((u32) ~ 0 == table_id) + { + rpath.frp_fib_index = 0; + } + else + { + rpath.frp_fib_index = + fib_table_find (dpo_proto_to_fib (rpath.frp_proto), table_id); + if ((u32) ~ 0 == rpath.frp_fib_index) + { + error = clib_error_return (0, "Nonexistent table id %d", table_id); + goto done; + } + } + + a->rpath = rpath; + a->is_add = is_add; + + rv = vnet_gpe_add_del_native_fwd_rpath (a); + if (rv) + { + return clib_error_return (0, "Error: couldn't add path!"); + } + +done: + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (gpe_native_forward_command) = { + .path = "gpe native-forward", + .short_help = "gpe native-forward [del] via <nh-ip-addr> [iface] " + "[table <table>]", + .function = gpe_native_forward_command_fn, +}; +/* *INDENT-ON* */ + +/** Format LISP-GPE status. */ +u8 * +format_vnet_lisp_gpe_status (u8 * s, va_list * args) +{ + lisp_gpe_main_t *lgm = &lisp_gpe_main; + return format (s, "%s", lgm->is_en ? "enabled" : "disabled"); +} + +/** LISP-GPE init function. */ +clib_error_t * +lisp_gpe_init (vlib_main_t * vm) +{ + lisp_gpe_main_t *lgm = &lisp_gpe_main; + clib_error_t *error = 0; + + if ((error = vlib_call_init_function (vm, ip_main_init))) + return error; + + if ((error = vlib_call_init_function (vm, ip4_lookup_init))) + return error; + + lgm->vnet_main = vnet_get_main (); + lgm->vlib_main = vm; + lgm->im4 = &ip4_main; + lgm->im6 = &ip6_main; + lgm->lm4 = &ip4_main.lookup_main; + lgm->lm6 = &ip6_main.lookup_main; + lgm->encap_mode = GPE_ENCAP_LISP; + + lgm->lisp_gpe_fwd_entries = + hash_create_mem (0, sizeof (lisp_gpe_fwd_entry_key_t), sizeof (uword)); + + lgm->lisp_stats_index_by_key = + hash_create_mem (0, sizeof (lisp_stats_key_t), sizeof (uword)); + clib_memset (&lgm->counters, 0, sizeof (lgm->counters)); + lgm->counters.name = "LISP counters"; + + return 0; +} + +gpe_encap_mode_t +vnet_gpe_get_encap_mode (void) +{ + lisp_gpe_main_t *lgm = &lisp_gpe_main; + return lgm->encap_mode; +} + +static clib_error_t * +lisp_gpe_test_send_nsh_packet (u8 * file_name) +{ + vlib_frame_t *f; + vlib_buffer_t *b; + lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main (); + pcap_main_t pm; + clib_error_t *error = 0; + + if (!file_name) + return clib_error_create ("no pcap file specified!"); + + clib_memset (&pm, 0, sizeof (pm)); + pm.file_name = (char *) file_name; + error = pcap_read (&pm); + if (error) + return error; + + u32 bi; + if (vlib_buffer_alloc (lgm->vlib_main, &bi, 1) != 1) + return clib_error_create ("cannot allocate memory!"); + + b = vlib_get_buffer (lgm->vlib_main, bi); + tunnel_lookup_t *nsh_ifaces = &lgm->nsh_ifaces; + uword *hip; + vnet_hw_interface_t *hi; + + hip = hash_get (nsh_ifaces->hw_if_index_by_dp_table, 0); + if (hip == 0) + return clib_error_create ("The NSH 0 interface doesn't exist"); + + hi = vnet_get_hw_interface (lgm->vnet_main, hip[0]); + + vnet_buffer (b)->sw_if_index[VLIB_TX] = hi->sw_if_index; + u8 *p = vlib_buffer_put_uninit (b, vec_len (pm.packets_read[0])); + clib_memcpy_fast (p, pm.packets_read[0], vec_len (pm.packets_read[0])); + vlib_buffer_pull (b, sizeof (ethernet_header_t)); + + vlib_node_t *n = vlib_get_node_by_name (lgm->vlib_main, + (u8 *) "interface-tx"); + f = vlib_get_frame_to_node (lgm->vlib_main, n->index); + u32 *to_next = vlib_frame_vector_args (f); + to_next[0] = bi; + f->n_vectors = 1; + vlib_put_frame_to_node (lgm->vlib_main, n->index, f); + + return error; +} + +static clib_error_t * +lisp_test_nsh_command_fn (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + clib_error_t *error = 0; + u8 *file_name = 0; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "pcap %v", &file_name)) + { + error = lisp_gpe_test_send_nsh_packet (file_name); + goto done; + } + else + { + error = clib_error_create ("unknown input `%U'", + format_unformat_error, input); + goto done; + } + } + +done: + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_test_nsh_command, static) = { + .path = "test one nsh", + .short_help = "test gpe nsh pcap <path-to-pcap-file>", + .function = lisp_test_nsh_command_fn, +}; +/* *INDENT-ON* */ + +VLIB_INIT_FUNCTION (lisp_gpe_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |