diff options
Diffstat (limited to 'vnet/vnet/ip/lookup.c')
-rw-r--r-- | vnet/vnet/ip/lookup.c | 967 |
1 files changed, 0 insertions, 967 deletions
diff --git a/vnet/vnet/ip/lookup.c b/vnet/vnet/ip/lookup.c deleted file mode 100644 index 734a4cd7cfb..00000000000 --- a/vnet/vnet/ip/lookup.c +++ /dev/null @@ -1,967 +0,0 @@ -/* - * Copyright (c) 2015 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. - */ -/* - * ip/ip_lookup.c: ip4/6 adjacency and lookup table managment - * - * Copyright (c) 2008 Eliot Dresselhaus - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sublicense, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE - * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION - * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION - * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -#include <vnet/ip/ip.h> -#include <vnet/adj/adj.h> -#include <vnet/fib/fib_table.h> -#include <vnet/fib/ip4_fib.h> -#include <vnet/fib/ip6_fib.h> -#include <vnet/mpls/mpls.h> -#include <vnet/dpo/drop_dpo.h> -#include <vnet/dpo/classify_dpo.h> -#include <vnet/dpo/punt_dpo.h> -#include <vnet/dpo/receive_dpo.h> -#include <vnet/dpo/ip_null_dpo.h> - -/** - * @file - * @brief IPv4 and IPv6 adjacency and lookup table managment. - * - */ - -clib_error_t * -ip_interface_address_add_del (ip_lookup_main_t * lm, - u32 sw_if_index, - void *addr_fib, - u32 address_length, - u32 is_del, u32 * result_if_address_index) -{ - vnet_main_t *vnm = vnet_get_main (); - ip_interface_address_t *a, *prev, *next; - uword *p = mhash_get (&lm->address_to_if_address_index, addr_fib); - - vec_validate_init_empty (lm->if_address_pool_index_by_sw_if_index, - sw_if_index, ~0); - a = p ? pool_elt_at_index (lm->if_address_pool, p[0]) : 0; - - /* Verify given length. */ - if ((a && (address_length != a->address_length)) || (address_length == 0)) - { - vnm->api_errno = VNET_API_ERROR_ADDRESS_LENGTH_MISMATCH; - return clib_error_create - ("%U wrong length (expected %d) for interface %U", - lm->format_address_and_length, addr_fib, - address_length, a ? a->address_length : -1, - format_vnet_sw_if_index_name, vnm, sw_if_index); - } - - if (is_del) - { - if (!a) - { - vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index); - vnm->api_errno = VNET_API_ERROR_ADDRESS_NOT_FOUND_FOR_INTERFACE; - return clib_error_create ("%U not found for interface %U", - lm->format_address_and_length, - addr_fib, address_length, - format_vnet_sw_interface_name, vnm, si); - } - - if (a->prev_this_sw_interface != ~0) - { - prev = - pool_elt_at_index (lm->if_address_pool, - a->prev_this_sw_interface); - prev->next_this_sw_interface = a->next_this_sw_interface; - } - if (a->next_this_sw_interface != ~0) - { - next = - pool_elt_at_index (lm->if_address_pool, - a->next_this_sw_interface); - next->prev_this_sw_interface = a->prev_this_sw_interface; - - if (a->prev_this_sw_interface == ~0) - lm->if_address_pool_index_by_sw_if_index[sw_if_index] = - a->next_this_sw_interface; - } - - if ((a->next_this_sw_interface == ~0) - && (a->prev_this_sw_interface == ~0)) - lm->if_address_pool_index_by_sw_if_index[sw_if_index] = ~0; - - mhash_unset (&lm->address_to_if_address_index, addr_fib, - /* old_value */ 0); - pool_put (lm->if_address_pool, a); - - if (result_if_address_index) - *result_if_address_index = ~0; - } - - else if (!a) - { - u32 pi; /* previous index */ - u32 ai; - u32 hi; /* head index */ - - pool_get (lm->if_address_pool, a); - memset (a, ~0, sizeof (a[0])); - ai = a - lm->if_address_pool; - - hi = pi = lm->if_address_pool_index_by_sw_if_index[sw_if_index]; - prev = 0; - while (pi != (u32) ~ 0) - { - prev = pool_elt_at_index (lm->if_address_pool, pi); - pi = prev->next_this_sw_interface; - } - pi = prev ? prev - lm->if_address_pool : (u32) ~ 0; - - a->address_key = mhash_set (&lm->address_to_if_address_index, - addr_fib, ai, /* old_value */ 0); - a->address_length = address_length; - a->sw_if_index = sw_if_index; - a->flags = 0; - a->prev_this_sw_interface = pi; - a->next_this_sw_interface = ~0; - if (prev) - prev->next_this_sw_interface = ai; - - lm->if_address_pool_index_by_sw_if_index[sw_if_index] = - (hi != ~0) ? hi : ai; - if (result_if_address_index) - *result_if_address_index = ai; - } - else - { - if (result_if_address_index) - *result_if_address_index = a - lm->if_address_pool; - } - - - return /* no error */ 0; -} - -void -ip_lookup_init (ip_lookup_main_t * lm, u32 is_ip6) -{ - /* ensure that adjacency is cacheline aligned and sized */ - STATIC_ASSERT (STRUCT_OFFSET_OF (ip_adjacency_t, cacheline0) == 0, - "Cache line marker must be 1st element in struct"); - STATIC_ASSERT (STRUCT_OFFSET_OF (ip_adjacency_t, cacheline1) == - CLIB_CACHE_LINE_BYTES, - "Data in cache line 0 is bigger than cache line size"); - - /* Preallocate three "special" adjacencies */ - lm->adjacency_heap = adj_pool; - - if (!lm->fib_result_n_bytes) - lm->fib_result_n_bytes = sizeof (uword); - - lm->is_ip6 = is_ip6; - if (is_ip6) - { - lm->format_address_and_length = format_ip6_address_and_length; - mhash_init (&lm->address_to_if_address_index, sizeof (uword), - sizeof (ip6_address_fib_t)); - } - else - { - lm->format_address_and_length = format_ip4_address_and_length; - mhash_init (&lm->address_to_if_address_index, sizeof (uword), - sizeof (ip4_address_fib_t)); - } - - { - int i; - - /* Setup all IP protocols to be punted and builtin-unknown. */ - for (i = 0; i < 256; i++) - { - lm->local_next_by_ip_protocol[i] = IP_LOCAL_NEXT_PUNT; - lm->builtin_protocol_by_ip_protocol[i] = IP_BUILTIN_PROTOCOL_UNKNOWN; - } - - lm->local_next_by_ip_protocol[IP_PROTOCOL_UDP] = IP_LOCAL_NEXT_UDP_LOOKUP; - lm->local_next_by_ip_protocol[is_ip6 ? IP_PROTOCOL_ICMP6 : - IP_PROTOCOL_ICMP] = IP_LOCAL_NEXT_ICMP; - lm->builtin_protocol_by_ip_protocol[IP_PROTOCOL_UDP] = - IP_BUILTIN_PROTOCOL_UDP; - lm->builtin_protocol_by_ip_protocol[is_ip6 ? IP_PROTOCOL_ICMP6 : - IP_PROTOCOL_ICMP] = - IP_BUILTIN_PROTOCOL_ICMP; - } -} - -u8 * -format_ip_flow_hash_config (u8 * s, va_list * args) -{ - flow_hash_config_t flow_hash_config = va_arg (*args, u32); - -#define _(n,v) if (flow_hash_config & v) s = format (s, "%s ", #n); - foreach_flow_hash_bit; -#undef _ - - return s; -} - -u8 * -format_ip_lookup_next (u8 * s, va_list * args) -{ - ip_lookup_next_t n = va_arg (*args, ip_lookup_next_t); - char *t = 0; - - switch (n) - { - default: - s = format (s, "unknown %d", n); - return s; - - case IP_LOOKUP_NEXT_DROP: - t = "drop"; - break; - case IP_LOOKUP_NEXT_PUNT: - t = "punt"; - break; - case IP_LOOKUP_NEXT_ARP: - t = "arp"; - break; - case IP_LOOKUP_NEXT_MIDCHAIN: - t = "midchain"; - break; - case IP_LOOKUP_NEXT_GLEAN: - t = "glean"; - break; - case IP_LOOKUP_NEXT_REWRITE: - break; - } - - if (t) - vec_add (s, t, strlen (t)); - - return s; -} - -u8 * -format_ip_adjacency_packet_data (u8 * s, va_list * args) -{ - vnet_main_t *vnm = va_arg (*args, vnet_main_t *); - u32 adj_index = va_arg (*args, u32); - u8 *packet_data = va_arg (*args, u8 *); - u32 n_packet_data_bytes = va_arg (*args, u32); - ip_adjacency_t *adj = adj_get (adj_index); - - switch (adj->lookup_next_index) - { - case IP_LOOKUP_NEXT_REWRITE: - s = format (s, "%U", - format_vnet_rewrite_header, - vnm->vlib_main, &adj->rewrite_header, packet_data, - n_packet_data_bytes); - break; - - default: - break; - } - - return s; -} - -static uword -unformat_dpo (unformat_input_t * input, va_list * args) -{ - dpo_id_t *dpo = va_arg (*args, dpo_id_t *); - fib_protocol_t fp = va_arg (*args, int); - dpo_proto_t proto; - - proto = fib_proto_to_dpo (fp); - - if (unformat (input, "drop")) - dpo_copy (dpo, drop_dpo_get (proto)); - else if (unformat (input, "punt")) - dpo_copy (dpo, punt_dpo_get (proto)); - else if (unformat (input, "local")) - receive_dpo_add_or_lock (proto, ~0, NULL, dpo); - else if (unformat (input, "null-send-unreach")) - ip_null_dpo_add_and_lock (proto, IP_NULL_ACTION_SEND_ICMP_UNREACH, dpo); - else if (unformat (input, "null-send-prohibit")) - ip_null_dpo_add_and_lock (proto, IP_NULL_ACTION_SEND_ICMP_PROHIBIT, dpo); - else if (unformat (input, "null")) - ip_null_dpo_add_and_lock (proto, IP_NULL_ACTION_NONE, dpo); - else if (unformat (input, "classify")) - { - u32 classify_table_index; - - if (!unformat (input, "%d", &classify_table_index)) - { - clib_warning ("classify adj must specify table index"); - return 0; - } - - dpo_set (dpo, DPO_CLASSIFY, proto, - classify_dpo_create (proto, classify_table_index)); - } - else - return 0; - - return 1; -} - -const ip46_address_t zero_addr = { - .as_u64 = { - 0, 0}, -}; - -u32 -fib_table_id_find_fib_index (fib_protocol_t proto, u32 table_id) -{ - ip4_main_t *im4 = &ip4_main; - ip6_main_t *im6 = &ip6_main; - uword *p; - - switch (proto) - { - case FIB_PROTOCOL_IP4: - p = hash_get (im4->fib_index_by_table_id, table_id); - break; - case FIB_PROTOCOL_IP6: - p = hash_get (im6->fib_index_by_table_id, table_id); - break; - default: - p = NULL; - break; - } - if (NULL != p) - { - return (p[0]); - } - return (~0); -} - -clib_error_t * -vnet_ip_route_cmd (vlib_main_t * vm, - unformat_input_t * main_input, vlib_cli_command_t * cmd) -{ - unformat_input_t _line_input, *line_input = &_line_input; - fib_route_path_t *rpaths = NULL, rpath; - dpo_id_t dpo = DPO_INVALID, *dpos = NULL; - fib_prefix_t *prefixs = NULL, pfx; - mpls_label_t out_label, via_label; - clib_error_t *error = NULL; - u32 table_id, is_del; - vnet_main_t *vnm; - u32 fib_index; - f64 count; - int i; - - vnm = vnet_get_main (); - is_del = 0; - table_id = 0; - count = 1; - memset (&pfx, 0, sizeof (pfx)); - out_label = via_label = MPLS_LABEL_INVALID; - - /* Get a line of input. */ - if (!unformat_user (main_input, unformat_line_input, line_input)) - return 0; - - while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) - { - memset (&rpath, 0, sizeof (rpath)); - - if (unformat (line_input, "table %d", &table_id)) - ; - else if (unformat (line_input, "del")) - is_del = 1; - else if (unformat (line_input, "add")) - is_del = 0; - else if (unformat (line_input, "resolve-via-host")) - { - if (vec_len (rpaths) == 0) - { - error = clib_error_return (0, "Paths then flags"); - goto done; - } - rpaths[vec_len (rpaths) - 1].frp_flags |= - FIB_ROUTE_PATH_RESOLVE_VIA_HOST; - } - else if (unformat (line_input, "resolve-via-attached")) - { - if (vec_len (rpaths) == 0) - { - error = clib_error_return (0, "Paths then flags"); - goto done; - } - rpaths[vec_len (rpaths) - 1].frp_flags |= - FIB_ROUTE_PATH_RESOLVE_VIA_ATTACHED; - } - else if (unformat (line_input, "out-label %U", - unformat_mpls_unicast_label, &out_label)) - { - if (vec_len (rpaths) == 0) - { - error = clib_error_return (0, "Paths then labels"); - goto done; - } - vec_add1 (rpaths[vec_len (rpaths) - 1].frp_label_stack, out_label); - } - else if (unformat (line_input, "via-label %U", - unformat_mpls_unicast_label, &rpath.frp_local_label)) - { - rpath.frp_weight = 1; - rpath.frp_proto = FIB_PROTOCOL_MPLS; - rpath.frp_sw_if_index = ~0; - vec_add1 (rpaths, rpath); - } - else if (unformat (line_input, "count %f", &count)) - ; - - else if (unformat (line_input, "%U/%d", - unformat_ip4_address, &pfx.fp_addr.ip4, &pfx.fp_len)) - { - pfx.fp_proto = FIB_PROTOCOL_IP4; - vec_add1 (prefixs, pfx); - } - else if (unformat (line_input, "%U/%d", - unformat_ip6_address, &pfx.fp_addr.ip6, &pfx.fp_len)) - { - pfx.fp_proto = FIB_PROTOCOL_IP6; - vec_add1 (prefixs, pfx); - } - else if (unformat (line_input, "via %U %U weight %u", - unformat_ip4_address, - &rpath.frp_addr.ip4, - unformat_vnet_sw_interface, vnm, - &rpath.frp_sw_if_index, &rpath.frp_weight)) - { - rpath.frp_proto = FIB_PROTOCOL_IP4; - vec_add1 (rpaths, rpath); - } - - else if (unformat (line_input, "via %U %U weight %u", - unformat_ip6_address, - &rpath.frp_addr.ip6, - unformat_vnet_sw_interface, vnm, - &rpath.frp_sw_if_index, &rpath.frp_weight)) - { - rpath.frp_proto = FIB_PROTOCOL_IP6; - vec_add1 (rpaths, rpath); - } - - 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 = FIB_PROTOCOL_IP4; - vec_add1 (rpaths, rpath); - } - - 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 = FIB_PROTOCOL_IP6; - vec_add1 (rpaths, rpath); - } - else if (unformat (line_input, "via %U next-hop-table %d", - unformat_ip4_address, - &rpath.frp_addr.ip4, &rpath.frp_fib_index)) - { - rpath.frp_weight = 1; - rpath.frp_sw_if_index = ~0; - rpath.frp_proto = FIB_PROTOCOL_IP4; - vec_add1 (rpaths, rpath); - } - else if (unformat (line_input, "via %U next-hop-table %d", - unformat_ip6_address, - &rpath.frp_addr.ip6, &rpath.frp_fib_index)) - { - rpath.frp_weight = 1; - rpath.frp_sw_if_index = ~0; - rpath.frp_proto = FIB_PROTOCOL_IP6; - vec_add1 (rpaths, rpath); - } - else if (unformat (line_input, "via %U", - unformat_ip4_address, &rpath.frp_addr.ip4)) - { - /* - * the recursive next-hops are by default in the same table - * as the prefix - */ - rpath.frp_fib_index = table_id; - rpath.frp_weight = 1; - rpath.frp_sw_if_index = ~0; - rpath.frp_proto = FIB_PROTOCOL_IP4; - vec_add1 (rpaths, rpath); - } - else if (unformat (line_input, "via %U", - unformat_ip6_address, &rpath.frp_addr.ip6)) - { - rpath.frp_fib_index = table_id; - rpath.frp_weight = 1; - rpath.frp_sw_if_index = ~0; - rpath.frp_proto = FIB_PROTOCOL_IP6; - vec_add1 (rpaths, rpath); - } - else if (unformat (line_input, - "lookup in table %d", &rpath.frp_fib_index)) - { - rpath.frp_proto = pfx.fp_proto; - rpath.frp_sw_if_index = ~0; - vec_add1 (rpaths, rpath); - } - else if (vec_len (prefixs) > 0 && - unformat (line_input, "via %U", - unformat_vnet_sw_interface, vnm, - &rpath.frp_sw_if_index)) - { - rpath.frp_weight = 1; - rpath.frp_proto = prefixs[0].fp_proto; - vec_add1 (rpaths, rpath); - } - else if (vec_len (prefixs) > 0 && - unformat (line_input, "via %U", - unformat_dpo, &dpo, prefixs[0].fp_proto)) - { - vec_add1 (dpos, dpo); - } - else - { - error = unformat_parse_error (line_input); - goto done; - } - } - - unformat_free (line_input); - - if (vec_len (prefixs) == 0) - { - error = - clib_error_return (0, "expected ip4/ip6 destination address/length."); - goto done; - } - - if (!is_del && vec_len (rpaths) + vec_len (dpos) == 0) - { - error = clib_error_return (0, "expected paths."); - goto done; - } - - if (~0 == table_id) - { - /* - * if no table_id is passed we will manipulate the default - */ - fib_index = 0; - } - else - { - fib_index = fib_table_id_find_fib_index (prefixs[0].fp_proto, table_id); - - if (~0 == fib_index) - { - error = clib_error_return (0, "Nonexistent table id %d", table_id); - goto done; - } - } - - for (i = 0; i < vec_len (prefixs); i++) - { - if (is_del && 0 == vec_len (rpaths)) - { - fib_table_entry_delete (fib_index, &prefixs[i], FIB_SOURCE_CLI); - } - else if (!is_del && 1 == vec_len (dpos)) - { - fib_table_entry_special_dpo_add (fib_index, - &prefixs[i], - FIB_SOURCE_CLI, - FIB_ENTRY_FLAG_EXCLUSIVE, - &dpos[0]); - dpo_reset (&dpos[0]); - } - else if (vec_len (dpos) > 0) - { - error = - clib_error_return (0, - "Load-balancing over multiple special adjacencies is unsupported"); - goto done; - } - else if (0 < vec_len (rpaths)) - { - u32 k, j, n, incr; - ip46_address_t dst = prefixs[i].fp_addr; - f64 t[2]; - n = count; - t[0] = vlib_time_now (vm); - incr = 1 << ((FIB_PROTOCOL_IP4 == prefixs[0].fp_proto ? 32 : 128) - - prefixs[i].fp_len); - - for (k = 0; k < n; k++) - { - for (j = 0; j < vec_len (rpaths); j++) - { - u32 fi; - /* - * the CLI parsing stored table Ids, swap to FIB indicies - */ - fi = fib_table_id_find_fib_index (prefixs[i].fp_proto, - rpaths[i].frp_fib_index); - - if (~0 == fi) - { - error = - clib_error_return (0, "Via table %d does not exist", - rpaths[i].frp_fib_index); - goto done; - } - rpaths[i].frp_fib_index = fi; - - fib_prefix_t rpfx = { - .fp_len = prefixs[i].fp_len, - .fp_proto = prefixs[i].fp_proto, - .fp_addr = dst, - }; - - if (is_del) - fib_table_entry_path_remove2 (fib_index, - &rpfx, - FIB_SOURCE_CLI, &rpaths[j]); - else - fib_table_entry_path_add2 (fib_index, - &rpfx, - FIB_SOURCE_CLI, - FIB_ENTRY_FLAG_NONE, - &rpaths[j]); - } - - if (FIB_PROTOCOL_IP4 == prefixs[0].fp_proto) - { - dst.ip4.as_u32 = - clib_host_to_net_u32 (incr + - clib_net_to_host_u32 (dst. - ip4.as_u32)); - } - else - { - int bucket = (incr < 64 ? 0 : 1); - dst.ip6.as_u64[bucket] = - clib_host_to_net_u64 (incr + - clib_net_to_host_u64 (dst.ip6.as_u64 - [bucket])); - - } - } - t[1] = vlib_time_now (vm); - if (count > 1) - vlib_cli_output (vm, "%.6e routes/sec", count / (t[1] - t[0])); - } - else - { - error = clib_error_return (0, "Don't understand what you want..."); - goto done; - } - } - - -done: - vec_free (dpos); - vec_free (prefixs); - vec_free (rpaths); - return error; -} - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (vlib_cli_ip_command, static) = { - .path = "ip", - .short_help = "Internet protocol (IP) commands", -}; -/* *INDENT-ON* */ - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (vlib_cli_ip6_command, static) = { - .path = "ip6", - .short_help = "Internet protocol version 6 (IPv6) commands", -}; -/* *INDENT-ON* */ - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (vlib_cli_show_ip_command, static) = { - .path = "show ip", - .short_help = "Internet protocol (IP) show commands", -}; -/* *INDENT-ON* */ - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (vlib_cli_show_ip6_command, static) = { - .path = "show ip6", - .short_help = "Internet protocol version 6 (IPv6) show commands", -}; -/* *INDENT-ON* */ - -/*? - * This command is used to add or delete IPv4 or IPv6 routes. All - * IP Addresses ('<em><dst-ip-addr>/<width></em>', - * '<em><next-hop-ip-addr></em>' and '<em><adj-hop-ip-addr></em>') - * can be IPv4 or IPv6, but all must be of the same form in a single - * command. To display the current set of routes, use the commands - * '<em>show ip fib</em>' and '<em>show ip6 fib</em>'. - * - * @cliexpar - * Example of how to add a straight forward static route: - * @cliexcmd{ip route add 6.0.1.2/32 via 6.0.0.1 GigabitEthernet2/0/0} - * Example of how to delete a straight forward static route: - * @cliexcmd{ip route del 6.0.1.2/32 via 6.0.0.1 GigabitEthernet2/0/0} - * Mainly for route add/del performance testing, one can add or delete - * multiple routes by adding 'count N' to the previous item: - * @cliexcmd{ip route add count 10 7.0.0.0/24 via 6.0.0.1 GigabitEthernet2/0/0} - * Add multiple routes for the same destination to create equal-cost multipath: - * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.1 GigabitEthernet2/0/0} - * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.2 GigabitEthernet2/0/0} - * For unequal-cost multipath, specify the desired weights. This - * combination of weights results in 3/4 of the traffic following the - * second path, 1/4 following the first path: - * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.1 GigabitEthernet2/0/0 weight 1} - * @cliexcmd{ip route add 7.0.0.1/32 via 6.0.0.2 GigabitEthernet2/0/0 weight 3} - * To add a route to a particular FIB table (VRF), use: - * @cliexcmd{ip route add 172.16.24.0/24 table 7 via GigabitEthernet2/0/0} - ?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (ip_route_command, static) = { - .path = "ip route", - .short_help = "ip route [add|del] [count <n>] <dst-ip-addr>/<width> [table <table-id>] [via <next-hop-ip-addr> [<interface>] [weight <weight>]] | [via arp <interface> <adj-hop-ip-addr>] | [via drop|punt|local<id>|arp|classify <classify-idx>] [lookup in table <out-table-id>]", - .function = vnet_ip_route_cmd, - .is_mp_safe = 1, -}; -/* *INDENT-ON* */ - -/* - * The next two routines address a longstanding script hemorrhoid. - * Probing a v4 or v6 neighbor needs to appear to be synchronous, - * or dependent route-adds will simply fail. - */ -static clib_error_t * -ip6_probe_neighbor_wait (vlib_main_t * vm, ip6_address_t * a, u32 sw_if_index, - int retry_count) -{ - vnet_main_t *vnm = vnet_get_main (); - clib_error_t *e; - int i; - int resolved = 0; - uword event_type; - uword *event_data = 0; - - ASSERT (vlib_in_process_context (vm)); - - if (retry_count > 0) - vnet_register_ip6_neighbor_resolution_event - (vnm, a, vlib_get_current_process (vm)->node_runtime.node_index, - 1 /* event */ , 0 /* data */ ); - - for (i = 0; i < retry_count; i++) - { - /* The interface may be down, etc. */ - e = ip6_probe_neighbor (vm, a, sw_if_index); - - if (e) - return e; - - vlib_process_wait_for_event_or_clock (vm, 1.0); - event_type = vlib_process_get_events (vm, &event_data); - switch (event_type) - { - case 1: /* resolved... */ - vlib_cli_output (vm, "Resolved %U", format_ip6_address, a); - resolved = 1; - goto done; - - case ~0: /* timeout */ - break; - - default: - clib_warning ("unknown event_type %d", event_type); - } - vec_reset_length (event_data); - } - -done: - - if (!resolved) - return clib_error_return (0, "Resolution failed for %U", - format_ip6_address, a); - return 0; -} - -static clib_error_t * -ip4_probe_neighbor_wait (vlib_main_t * vm, ip4_address_t * a, u32 sw_if_index, - int retry_count) -{ - vnet_main_t *vnm = vnet_get_main (); - clib_error_t *e; - int i; - int resolved = 0; - uword event_type; - uword *event_data = 0; - - ASSERT (vlib_in_process_context (vm)); - - if (retry_count > 0) - vnet_register_ip4_arp_resolution_event - (vnm, a, vlib_get_current_process (vm)->node_runtime.node_index, - 1 /* event */ , 0 /* data */ ); - - for (i = 0; i < retry_count; i++) - { - /* The interface may be down, etc. */ - e = ip4_probe_neighbor (vm, a, sw_if_index); - - if (e) - return e; - - vlib_process_wait_for_event_or_clock (vm, 1.0); - event_type = vlib_process_get_events (vm, &event_data); - switch (event_type) - { - case 1: /* resolved... */ - vlib_cli_output (vm, "Resolved %U", format_ip4_address, a); - resolved = 1; - goto done; - - case ~0: /* timeout */ - break; - - default: - clib_warning ("unknown event_type %d", event_type); - } - vec_reset_length (event_data); - } - -done: - - vec_reset_length (event_data); - - if (!resolved) - return clib_error_return (0, "Resolution failed for %U", - format_ip4_address, a); - return 0; -} - -static clib_error_t * -probe_neighbor_address (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; - ip4_address_t a4; - ip6_address_t a6; - clib_error_t *error = 0; - u32 sw_if_index = ~0; - int retry_count = 3; - int is_ip4 = 1; - int address_set = 0; - - /* 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_user (line_input, unformat_vnet_sw_interface, vnm, - &sw_if_index)) - ; - else if (unformat (line_input, "retry %d", &retry_count)) - ; - - else if (unformat (line_input, "%U", unformat_ip4_address, &a4)) - address_set++; - else if (unformat (line_input, "%U", unformat_ip6_address, &a6)) - { - address_set++; - is_ip4 = 0; - } - else - return clib_error_return (0, "unknown input '%U'", - format_unformat_error, line_input); - } - - unformat_free (line_input); - - if (sw_if_index == ~0) - return clib_error_return (0, "Interface required, not set."); - if (address_set == 0) - return clib_error_return (0, "ip address required, not set."); - if (address_set > 1) - return clib_error_return (0, "Multiple ip addresses not supported."); - - if (is_ip4) - error = ip4_probe_neighbor_wait (vm, &a4, sw_if_index, retry_count); - else - error = ip6_probe_neighbor_wait (vm, &a6, sw_if_index, retry_count); - - return error; -} - -/*? - * The '<em>ip probe-neighbor</em>' command ARPs for IPv4 addresses or - * attempts IPv6 neighbor discovery depending on the supplied IP address - * format. - * - * @note This command will not immediately affect the indicated FIB; it - * is not suitable for use in establishing a FIB entry prior to adding - * recursive FIB entries. As in: don't use it in a script to probe a - * gateway prior to adding a default route. It won't work. Instead, - * configure a static ARP cache entry [see '<em>set ip arp</em>'], or - * a static IPv6 neighbor [see '<em>set ip6 neighbor</em>']. - * - * @cliexpar - * Example of probe for an IPv4 address: - * @cliexcmd{ip probe-neighbor GigabitEthernet2/0/0 172.16.1.2} -?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (ip_probe_neighbor_command, static) = { - .path = "ip probe-neighbor", - .function = probe_neighbor_address, - .short_help = "ip probe-neighbor <interface> <ip4-addr> | <ip6-addr> [retry nn]", - .is_mp_safe = 1, -}; -/* *INDENT-ON* */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |