diff options
Diffstat (limited to 'src/vnet/srmpls/sr_mpls_steering.c')
| -rw-r--r-- | src/vnet/srmpls/sr_mpls_steering.c | 897 |
1 files changed, 0 insertions, 897 deletions
diff --git a/src/vnet/srmpls/sr_mpls_steering.c b/src/vnet/srmpls/sr_mpls_steering.c deleted file mode 100644 index e8920df542b..00000000000 --- a/src/vnet/srmpls/sr_mpls_steering.c +++ /dev/null @@ -1,897 +0,0 @@ -/* - * sr_steering.c: ipv6 segment routing steering into SR policy - * - * 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 Packet steering into SR-MPLS Policies - * - * This file is in charge of handling the FIB appropiatly to steer packets - * through SR Policies as defined in 'sr_mpls_policy.c'. Notice that here - * we are only doing steering. SR policy application is done in - * sr_policy_rewrite.c - * - * Supports: - * - Steering of IPv6 traffic Destination Address based through BSID - * - Steering of IPv4 traffic Destination Address based through BSID - * - Steering of IPv4 and IPv6 traffic through N,C (SR CP) - */ - -#include <vlib/vlib.h> -#include <vnet/vnet.h> -#include <vnet/srmpls/sr_mpls.h> -#include <vnet/ip/ip4_packet.h> -#include <vnet/ip/ip6_packet.h> -#include <vnet/fib/mpls_fib.h> - -#include <vppinfra/error.h> -#include <vppinfra/elog.h> - -#define SRMPLS_TE_OFFSET 50 - -/** - * @brief function to sort the colors in descending order - */ -int -sort_color_descent (const u32 * x, u32 * y) -{ - return *y - *x; -} - -/********************* Internal (NH, C) labels *******************************/ -/** - * @brief find the corresponding label for (endpoint, color) and lock it - * endpoint might be NULL or ANY - * NULL = 0, ANY=~0 - */ -u32 -find_or_create_internal_label (ip46_address_t endpoint, u32 color) -{ - mpls_sr_main_t *sm = &sr_mpls_main; - uword *color_table, *result_label; - - if (!sm->sr_policies_c2e2eclabel_hash.hash) - mhash_init (&sm->sr_policies_c2e2eclabel_hash, sizeof (mhash_t), - sizeof (u32)); - - color_table = mhash_get (&sm->sr_policies_c2e2eclabel_hash, &color); - if (!color_table) - { - mhash_t color_t; - clib_memset (&color_t, 0, sizeof (mhash_t)); - mhash_init (&color_t, sizeof (u32), sizeof (ip46_address_t)); - mhash_set_mem (&sm->sr_policies_c2e2eclabel_hash, &color, - (uword *) & color_t, NULL); - color_table = mhash_get (&sm->sr_policies_c2e2eclabel_hash, &color); - } - - result_label = mhash_get ((mhash_t *) color_table, &endpoint); - - if (result_label) - return (u32) * result_label; - - /* Create and set a new internal label */ - u32 *new_internal_label = 0; - pool_get (sm->ec_labels, new_internal_label); - *new_internal_label = 0; - mhash_set ((mhash_t *) color_table, &endpoint, - (new_internal_label - sm->ec_labels) + SRMPLS_TE_OFFSET, NULL); - - return (new_internal_label - sm->ec_labels) + SRMPLS_TE_OFFSET; -} - -always_inline void -internal_label_lock_co (ip46_address_t endpoint, u32 color, char co_bits) -{ - ip46_address_t zero, any; - ip46_address_reset (&zero); - any.as_u64[0] = any.as_u64[1] = (u64) ~ 0; - switch (co_bits) - { - case SR_TE_CO_BITS_10: - internal_label_lock (endpoint, color); - internal_label_lock (zero, color); - internal_label_lock (any, color); - break; - case SR_TE_CO_BITS_01: - internal_label_lock (endpoint, color); - internal_label_lock (zero, color); - break; - case SR_TE_CO_BITS_00: - case SR_TE_CO_BITS_11: - internal_label_lock (endpoint, color); - break; - } -} - -/** - * @brief lock the label for (NH, C) - * endpoint might be NULL or ANY - * NULL = 0, ANY=~0 - */ -void -internal_label_lock (ip46_address_t endpoint, u32 color) -{ - mpls_sr_main_t *sm = &sr_mpls_main; - uword *color_table, *result_label; - - if (!sm->sr_policies_c2e2eclabel_hash.hash) - return; - - color_table = mhash_get (&sm->sr_policies_c2e2eclabel_hash, &color); - if (!color_table) - return; - - result_label = mhash_get ((mhash_t *) color_table, &endpoint); - - if (!result_label) - return; - - /* Lock it */ - u32 *label_lock = - pool_elt_at_index (sm->ec_labels, *result_label - SRMPLS_TE_OFFSET); - (*label_lock)++; -} - - -always_inline void -internal_label_unlock_co (ip46_address_t endpoint, u32 color, char co_bits) -{ - ip46_address_t zero, any; - ip46_address_reset (&zero); - any.as_u64[0] = any.as_u64[1] = (u64) ~ 0; - switch (co_bits) - { - case SR_TE_CO_BITS_10: - internal_label_unlock (endpoint, color); - internal_label_unlock (zero, color); - internal_label_unlock (any, color); - break; - case SR_TE_CO_BITS_01: - internal_label_unlock (endpoint, color); - internal_label_unlock (zero, color); - break; - case SR_TE_CO_BITS_00: - case SR_TE_CO_BITS_11: - internal_label_unlock (endpoint, color); - break; - } -} - -/** - * @brief Release lock on label for (endpoint, color) - * endpoint might be NULL or ANY - * NULL = 0, ANY=~0 - */ -void -internal_label_unlock (ip46_address_t endpoint, u32 color) -{ - mpls_sr_main_t *sm = &sr_mpls_main; - uword *color_table, *result_label; - - if (!sm->sr_policies_c2e2eclabel_hash.hash) - return; - - color_table = mhash_get (&sm->sr_policies_c2e2eclabel_hash, &color); - if (!color_table) - return; - - result_label = mhash_get ((mhash_t *) color_table, &endpoint); - - if (!result_label) - return; - - u32 *label_lock = - pool_elt_at_index (sm->ec_labels, *result_label - SRMPLS_TE_OFFSET); - (*label_lock)--; - - if (*label_lock == 0) - { - pool_put (sm->ec_labels, label_lock); - mhash_unset ((mhash_t *) color_table, &endpoint, NULL); - if (mhash_elts ((mhash_t *) color_table) == 0) - { - mhash_free ((mhash_t *) color_table); - mhash_unset (&sm->sr_policies_c2e2eclabel_hash, &color, NULL); - if (mhash_elts (&sm->sr_policies_c2e2eclabel_hash) == 0) - { - mhash_free (&sm->sr_policies_c2e2eclabel_hash); - sm->sr_policies_c2e2eclabel_hash.hash = NULL; - fib_table_unlock (sm->fib_table_EC, FIB_PROTOCOL_MPLS, - FIB_SOURCE_SR); - sm->fib_table_EC = (u32) ~ 0; - } - } - } -} - -/********************* steering computation *********************************/ -/** - * @brief function to update the FIB - */ -void -compute_sr_te_automated_steering_fib_entry (mpls_sr_steering_policy_t * - steer_pl) -{ - mpls_sr_main_t *sm = &sr_mpls_main; - fib_prefix_t pfx = { 0 }; - - u32 *internal_labels = 0; - ip46_address_t zero, any; - ip46_address_reset (&zero); - any.as_u64[0] = any.as_u64[1] = (u64) ~ 0; - - u32 *color_i = NULL; - vec_foreach (color_i, steer_pl->color) - { - switch (steer_pl->co_bits) - { - case SR_TE_CO_BITS_10: - vec_add1 (internal_labels, - find_or_create_internal_label (steer_pl->next_hop, - *color_i)); - vec_add1 (internal_labels, - find_or_create_internal_label (zero, *color_i)); - vec_add1 (internal_labels, - find_or_create_internal_label (any, *color_i)); - break; - case SR_TE_CO_BITS_01: - vec_add1 (internal_labels, - find_or_create_internal_label (steer_pl->next_hop, - *color_i)); - vec_add1 (internal_labels, - find_or_create_internal_label (zero, *color_i)); - break; - case SR_TE_CO_BITS_00: - case SR_TE_CO_BITS_11: - vec_add1 (internal_labels, - find_or_create_internal_label (steer_pl->next_hop, - *color_i)); - break; - } - } - - /* Does hidden FIB already exist? */ - if (sm->fib_table_EC == (u32) ~ 0) - { - sm->fib_table_EC = fib_table_create_and_lock (FIB_PROTOCOL_MPLS, - FIB_SOURCE_SR, - "SR-MPLS Traffic Engineering (NextHop,Color)"); - - fib_table_flush (sm->fib_table_EC, FIB_PROTOCOL_MPLS, - FIB_SOURCE_SPECIAL); - } - - /* Add the corresponding FIB entries */ - fib_route_path_t path = { - .frp_proto = DPO_PROTO_MPLS, - .frp_eos = MPLS_EOS, - .frp_sw_if_index = ~0, - .frp_fib_index = sm->fib_table_EC, - .frp_weight = 1, - .frp_flags = FIB_ROUTE_PATH_FLAG_NONE, - .frp_label_stack = 0 - }; - fib_route_path_t *paths = NULL; - - if (steer_pl->classify.traffic_type == SR_STEER_IPV6) - { - pfx.fp_proto = FIB_PROTOCOL_IP6; - pfx.fp_len = steer_pl->classify.mask_width; - pfx.fp_addr.ip6 = steer_pl->classify.prefix.ip6; - } - else if (steer_pl->classify.traffic_type == SR_STEER_IPV4) - { - pfx.fp_proto = FIB_PROTOCOL_IP4; - pfx.fp_len = steer_pl->classify.mask_width; - pfx.fp_addr.ip4 = steer_pl->classify.prefix.ip4; - } - - if (steer_pl->vpn_label != (u32) ~ 0) - { - fib_mpls_label_t fml = { - .fml_value = steer_pl->vpn_label, - }; - vec_add1 (path.frp_label_stack, fml); - path.frp_eos = MPLS_NON_EOS; - } - - u32 label_i; - vec_foreach_index (label_i, internal_labels) - { - path.frp_local_label = internal_labels[label_i]; - path.frp_preference = label_i; - vec_add1 (paths, path); - } - - /* Finally we must add to FIB IGP to N */ - clib_memcpy (&path.frp_addr, &steer_pl->next_hop, - sizeof (steer_pl->next_hop)); - path.frp_preference = vec_len (internal_labels); - path.frp_label_stack = NULL; - - if (steer_pl->nh_type == SR_STEER_IPV6) - { - path.frp_proto = DPO_PROTO_IP6; - path.frp_fib_index = - fib_table_find (FIB_PROTOCOL_IP6, - (steer_pl->classify.fib_table != - (u32) ~ 0 ? steer_pl->classify.fib_table : 0)); - } - else if (steer_pl->nh_type == SR_STEER_IPV4) - { - path.frp_proto = DPO_PROTO_IP4; - path.frp_fib_index = - fib_table_find (FIB_PROTOCOL_IP4, - (steer_pl->classify.fib_table != - (u32) ~ 0 ? steer_pl->classify.fib_table : 0)); - } - - vec_add1 (paths, path); - if (steer_pl->classify.traffic_type == SR_STEER_IPV6) - fib_table_entry_update (fib_table_find - (FIB_PROTOCOL_IP6, - (steer_pl->classify.fib_table != - (u32) ~ 0 ? steer_pl->classify.fib_table : 0)), - &pfx, FIB_SOURCE_SR, - FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT, paths); - else if (steer_pl->classify.traffic_type == SR_STEER_IPV4) - fib_table_entry_update (fib_table_find - (FIB_PROTOCOL_IP4, - (steer_pl->classify.fib_table != - (u32) ~ 0 ? steer_pl->classify.fib_table : 0)), - &pfx, FIB_SOURCE_SR, - FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT, paths); - - vec_free (paths); - paths = NULL; -} - -/** - * @brief Steer traffic L3 traffic through a given SR-MPLS policy - * - * @param is_del - * @param bsid is the bindingSID of the SR Policy (alt to sr_policy_index) - * @param sr_policy is the index of the SR Policy (alt to bsid) - * @param table_id is the VRF where to install the FIB entry for the BSID - * @param prefix is the IPv4/v6 address for L3 traffic type - * @param mask_width is the mask for L3 traffic type - * @param traffic_type describes the type of traffic - * @param next_hop SR TE Next-Hop - * @param nh_type is the AF of Next-Hop - * @param color SR TE color - * @param co_bits SR TE color-only bits - * - * @return 0 if correct, else error - */ -int -sr_mpls_steering_policy_add (mpls_label_t bsid, u32 table_id, - ip46_address_t * prefix, u32 mask_width, - u8 traffic_type, ip46_address_t * next_hop, - u8 nh_type, u32 color, char co_bits, - mpls_label_t vpn_label) -{ - mpls_sr_main_t *sm = &sr_mpls_main; - sr_mpls_steering_key_t key; - mpls_sr_steering_policy_t *steer_pl; - fib_prefix_t pfx = { 0 }; - - mpls_sr_policy_t *sr_policy = 0; - uword *p = 0; - - clib_memset (&key, 0, sizeof (sr_mpls_steering_key_t)); - - if (traffic_type != SR_STEER_IPV4 && traffic_type != SR_STEER_IPV6) - return -1; - - /* Compute the steer policy key */ - key.prefix.as_u64[0] = prefix->as_u64[0]; - key.prefix.as_u64[1] = prefix->as_u64[1]; - key.mask_width = mask_width; - key.fib_table = (table_id != (u32) ~ 0 ? table_id : 0); - key.traffic_type = traffic_type; - - /* - * Search for steering policy. If already exists we are adding a new - * color. - */ - if (!sm->sr_steer_policies_hash.hash) - mhash_init (&sm->sr_steer_policies_hash, sizeof (uword), - sizeof (sr_mpls_steering_key_t)); - - p = mhash_get (&sm->sr_steer_policies_hash, &key); - if (p) - { - steer_pl = pool_elt_at_index (sm->steer_policies, p[0]); - if (steer_pl->bsid != (u32) ~ 0) - return -1; //Means we are rewritting the steering. Not allowed. - - /* Means we are adding a color. Check that NH match. */ - if (ip46_address_cmp (&steer_pl->next_hop, next_hop)) - return -2; - if (vec_search (steer_pl->color, color) != ~0) - return -3; - if (steer_pl->co_bits != co_bits) - return -4; /* CO colors should be the same */ - if (steer_pl->vpn_label != vpn_label) - return -5; /* VPN label should be the same */ - - /* Remove the steering and ReDo it */ - vec_add1 (steer_pl->color, color); - vec_sort_with_function (steer_pl->color, sort_color_descent); - compute_sr_te_automated_steering_fib_entry (steer_pl); - internal_label_lock_co (steer_pl->next_hop, color, steer_pl->co_bits); - return 0; - } - - /* Create a new steering policy */ - pool_get (sm->steer_policies, steer_pl); - clib_memset (steer_pl, 0, sizeof (*steer_pl)); - clib_memcpy (&steer_pl->classify.prefix, prefix, sizeof (ip46_address_t)); - clib_memcpy (&steer_pl->next_hop, next_hop, sizeof (ip46_address_t)); - steer_pl->nh_type = nh_type; - steer_pl->co_bits = co_bits; - steer_pl->classify.mask_width = mask_width; - steer_pl->classify.fib_table = (table_id != (u32) ~ 0 ? table_id : 0); - steer_pl->classify.traffic_type = traffic_type; - steer_pl->color = NULL; - steer_pl->vpn_label = vpn_label; - - /* Create and store key */ - mhash_set (&sm->sr_steer_policies_hash, &key, steer_pl - sm->steer_policies, - NULL); - - /* Local steering */ - if (bsid != (u32) ~ 0) - { - if (!sm->sr_policies_index_hash) - sm->sr_policies_index_hash = hash_create (0, sizeof (mpls_label_t)); - steer_pl->bsid = bsid; - p = hash_get (sm->sr_policies_index_hash, bsid); - if (!p) - return -1; - sr_policy = pool_elt_at_index (sm->sr_policies, p[0]); - - fib_route_path_t path = { - .frp_proto = DPO_PROTO_MPLS, - .frp_local_label = sr_policy->bsid, - .frp_eos = MPLS_EOS, - .frp_sw_if_index = ~0, - .frp_fib_index = 0, - .frp_weight = 1, - .frp_flags = FIB_ROUTE_PATH_FLAG_NONE, - .frp_label_stack = 0 - }; - fib_route_path_t *paths = NULL; - - if (steer_pl->vpn_label != (u32) ~ 0) - { - fib_mpls_label_t fml = { - .fml_value = steer_pl->vpn_label, - }; - vec_add1 (path.frp_label_stack, fml); - } - - /* FIB API calls - Recursive route through the BindingSID */ - if (traffic_type == SR_STEER_IPV6) - { - pfx.fp_proto = FIB_PROTOCOL_IP6; - pfx.fp_len = steer_pl->classify.mask_width; - pfx.fp_addr.ip6 = steer_pl->classify.prefix.ip6; - path.frp_fib_index = 0; - path.frp_preference = 0; - vec_add1 (paths, path); - fib_table_entry_path_add2 (fib_table_find - (FIB_PROTOCOL_IP6, - (table_id != (u32) ~ 0 ? table_id : 0)), - &pfx, FIB_SOURCE_SR, - FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT, paths); - vec_free (paths); - } - else if (traffic_type == SR_STEER_IPV4) - { - pfx.fp_proto = FIB_PROTOCOL_IP4; - pfx.fp_len = steer_pl->classify.mask_width; - pfx.fp_addr.ip4 = steer_pl->classify.prefix.ip4; - path.frp_fib_index = 0; - path.frp_preference = 0; - vec_add1 (paths, path); - fib_table_entry_path_add2 (fib_table_find - (FIB_PROTOCOL_IP4, - (table_id != (u32) ~ 0 ? table_id : 0)), - &pfx, FIB_SOURCE_SR, - FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT, paths); - vec_free (paths); - } - } - /* Automated steering */ - else - { - steer_pl->bsid = (u32) ~ 0; - vec_add1 (steer_pl->color, color); - compute_sr_te_automated_steering_fib_entry (steer_pl); - internal_label_lock_co (steer_pl->next_hop, color, steer_pl->co_bits); - } - return 0; -} - -/** - * @brief Delete steering rule for an SR-MPLS policy - * - * @param is_del - * @param bsid is the bindingSID of the SR Policy (alt to sr_policy_index) - * @param sr_policy is the index of the SR Policy (alt to bsid) - * @param table_id is the VRF where to install the FIB entry for the BSID - * @param prefix is the IPv4/v6 address for L3 traffic type - * @param mask_width is the mask for L3 traffic type - * @param traffic_type describes the type of traffic - * @param next_hop SR TE Next-HOP - * @param nh_type is the AF of Next-Hop - * @param color SR TE color - * - * @return 0 if correct, else error - */ -int -sr_mpls_steering_policy_del (ip46_address_t * prefix, u32 mask_width, - u8 traffic_type, u32 table_id, u32 color) -{ - mpls_sr_main_t *sm = &sr_mpls_main; - sr_mpls_steering_key_t key; - mpls_sr_steering_policy_t *steer_pl; - fib_prefix_t pfx = { 0 }; - uword *p = 0; - - clib_memset (&key, 0, sizeof (sr_mpls_steering_key_t)); - - /* Compute the steer policy key */ - if (traffic_type != SR_STEER_IPV4 && traffic_type != SR_STEER_IPV6) - return -1; - - key.prefix.as_u64[0] = prefix->as_u64[0]; - key.prefix.as_u64[1] = prefix->as_u64[1]; - key.mask_width = mask_width; - key.fib_table = (table_id != (u32) ~ 0 ? table_id : 0); - key.traffic_type = traffic_type; - - if (!sm->sr_steer_policies_hash.hash) - mhash_init (&sm->sr_steer_policies_hash, sizeof (uword), - sizeof (sr_mpls_steering_key_t)); - - /* Search for the item */ - p = mhash_get (&sm->sr_steer_policies_hash, &key); - - if (!p) - return -1; - - /* Retrieve Steer Policy function */ - steer_pl = pool_elt_at_index (sm->steer_policies, p[0]); - - if (steer_pl->bsid == (u32) ~ 0) - { - /* Remove the color from the color vector */ - vec_del1 (steer_pl->color, vec_search (steer_pl->color, color)); - - if (vec_len (steer_pl->color)) - { - /* Reorder Colors */ - vec_sort_with_function (steer_pl->color, sort_color_descent); - compute_sr_te_automated_steering_fib_entry (steer_pl); - /* Remove all the locks for this ones... */ - internal_label_unlock_co (steer_pl->next_hop, color, - steer_pl->co_bits); - return 0; - } - else - { - vec_free (steer_pl->color); - /* Remove FIB entry */ - if (steer_pl->classify.traffic_type == SR_STEER_IPV6) - { - pfx.fp_proto = FIB_PROTOCOL_IP6; - pfx.fp_len = steer_pl->classify.mask_width; - pfx.fp_addr.ip6 = steer_pl->classify.prefix.ip6; - fib_table_entry_delete (fib_table_find - (FIB_PROTOCOL_IP6, - steer_pl->classify.fib_table), &pfx, - FIB_SOURCE_SR); - } - else if (steer_pl->classify.traffic_type == SR_STEER_IPV4) - { - pfx.fp_proto = FIB_PROTOCOL_IP4; - pfx.fp_len = steer_pl->classify.mask_width; - pfx.fp_addr.ip4 = steer_pl->classify.prefix.ip4; - fib_table_entry_delete (fib_table_find - (FIB_PROTOCOL_IP4, - steer_pl->classify.fib_table), &pfx, - FIB_SOURCE_SR); - } - /* Remove all the locks for this ones... */ - internal_label_unlock_co (steer_pl->next_hop, color, - steer_pl->co_bits); - } - } - else //Remove by BSID - { - if (steer_pl->classify.traffic_type == SR_STEER_IPV6) - { - pfx.fp_proto = FIB_PROTOCOL_IP6; - pfx.fp_len = steer_pl->classify.mask_width; - pfx.fp_addr.ip6 = steer_pl->classify.prefix.ip6; - fib_table_entry_delete (fib_table_find - (FIB_PROTOCOL_IP6, - steer_pl->classify.fib_table), &pfx, - FIB_SOURCE_SR); - } - else if (steer_pl->classify.traffic_type == SR_STEER_IPV4) - { - pfx.fp_proto = FIB_PROTOCOL_IP4; - pfx.fp_len = steer_pl->classify.mask_width; - pfx.fp_addr.ip4 = steer_pl->classify.prefix.ip4; - fib_table_entry_delete (fib_table_find - (FIB_PROTOCOL_IP4, - steer_pl->classify.fib_table), &pfx, - FIB_SOURCE_SR); - } - } - /* Delete SR steering policy entry */ - pool_put (sm->steer_policies, steer_pl); - mhash_unset (&sm->sr_steer_policies_hash, &key, NULL); - if (mhash_elts (&sm->sr_steer_policies_hash) == 0) - { - mhash_free (&sm->sr_steer_policies_hash); - sm->sr_steer_policies_hash.hash = NULL; - } - return 0; -} - -static clib_error_t * -sr_mpls_steer_policy_command_fn (vlib_main_t * vm, unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - int is_del = 0; - - ip46_address_t prefix, nh; - u32 dst_mask_width = 0; - u8 traffic_type = 0; - u8 nh_type = 0; - u32 fib_table = (u32) ~ 0, color = (u32) ~ 0; - u32 co_bits = 0; - - mpls_label_t bsid, vpn_label = (u32) ~ 0; - - u8 sr_policy_set = 0; - - clib_memset (&prefix, 0, sizeof (ip46_address_t)); - clib_memset (&nh, 0, sizeof (ip46_address_t)); - - int rv; - while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (input, "del")) - is_del = 1; - else if (!traffic_type - && unformat (input, "l3 %U/%d", unformat_ip6_address, - &prefix.ip6, &dst_mask_width)) - traffic_type = SR_STEER_IPV6; - else if (!traffic_type - && unformat (input, "l3 %U/%d", unformat_ip4_address, - &prefix.ip4, &dst_mask_width)) - traffic_type = SR_STEER_IPV4; - else if (!sr_policy_set - && unformat (input, "via sr policy bsid %U", - unformat_mpls_unicast_label, &bsid)) - sr_policy_set = 1; - else if (!sr_policy_set - && unformat (input, "via next-hop %U color %d co %d", - unformat_ip4_address, &nh.ip4, &color, &co_bits)) - { - sr_policy_set = 1; - nh_type = SR_STEER_IPV4; - } - else if (!sr_policy_set - && unformat (input, "via next-hop %U color %d co %d", - unformat_ip6_address, &nh.ip6, &color, &co_bits)) - { - sr_policy_set = 1; - nh_type = SR_STEER_IPV6; - } - else if (fib_table == (u32) ~ 0 - && unformat (input, "fib-table %d", &fib_table)); - else if (unformat (input, "vpn-label %U", - unformat_mpls_unicast_label, &vpn_label)); - else - break; - } - - if (!traffic_type) - return clib_error_return (0, "No L3 traffic specified"); - if (!sr_policy_set) - return clib_error_return (0, "No SR policy specified"); - - /* Make sure that the prefixes are clean */ - if (traffic_type == SR_STEER_IPV4) - { - u32 mask = - (dst_mask_width ? (0xFFFFFFFFu >> (32 - dst_mask_width)) : 0); - prefix.ip4.as_u32 &= mask; - } - else if (traffic_type == SR_STEER_IPV6) - { - ip6_address_t mask; - ip6_address_mask_from_width (&mask, dst_mask_width); - ip6_address_mask (&prefix.ip6, &mask); - } - - if (nh_type) - bsid = (u32) ~ 0; - - if (is_del) - rv = - sr_mpls_steering_policy_del (&prefix, dst_mask_width, - traffic_type, fib_table, color); - - else - rv = - sr_mpls_steering_policy_add (bsid, fib_table, &prefix, dst_mask_width, - traffic_type, &nh, nh_type, color, co_bits, - vpn_label); - - switch (rv) - { - case 0: - break; - case 1: - return 0; - case -1: - return clib_error_return (0, "Incorrect API usage."); - case -2: - return clib_error_return (0, "The Next-Hop does not match."); - case -3: - return clib_error_return (0, "The color already exists."); - case -4: - return clib_error_return (0, "The co-bits do not match."); - case -5: - return clib_error_return (0, "The VPN-labels do not match."); - default: - return clib_error_return (0, "BUG: sr steer policy returns %d", rv); - } - return 0; -} - -VLIB_CLI_COMMAND(sr_mpls_steer_policy_command, static)= -{ - .path = "sr mpls steer", - .short_help = "sr mpls steer (del) l3 <ip_addr/mask> " - "via [sr policy bsid <mpls_label> || next-hop <ip46_addr> color <u32> co <0|1|2|3> ](fib-table <fib_table_index>)(vpn-label 500)", - .long_help = - "\tSteer L3 traffic through an existing SR policy.\n" - "\tExamples:\n" - "\t\tsr steer l3 2001::/64 via sr_policy bsid 29999\n" - "\t\tsr steer del l3 2001::/64 via sr_policy bsid 29999\n" - "\t\tsr steer l3 2001::/64 via next-hop 1.1.1.1 color 1234 co 0\n" - "\t\tsr steer l3 2001::/64 via next-hop 2001::1 color 1234 co 2 vpn-label 500\n", - .function = sr_mpls_steer_policy_command_fn, -}; - -static clib_error_t * -show_sr_mpls_steering_policies_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - mpls_sr_main_t *sm = &sr_mpls_main; - mpls_sr_steering_policy_t **steer_policies = 0; - mpls_sr_steering_policy_t *steer_pl; - - int i; - - vlib_cli_output (vm, "SR MPLS steering policies:"); - pool_foreach (steer_pl, sm->steer_policies) { - vec_add1(steer_policies, steer_pl); - } - for (i = 0; i < vec_len (steer_policies); i++) - { - vlib_cli_output (vm, "=========================="); - steer_pl = steer_policies[i]; - if (steer_pl->classify.traffic_type == SR_STEER_IPV4) - { - vlib_cli_output (vm, "Prefix: %U/%d via:", - format_ip4_address, - &steer_pl->classify.prefix.ip4, - steer_pl->classify.mask_width); - } - else if (steer_pl->classify.traffic_type == SR_STEER_IPV6) - { - vlib_cli_output (vm, "Prefix: %U/%d via:", - format_ip6_address, - &steer_pl->classify.prefix.ip6, - steer_pl->classify.mask_width); - } - - if (steer_pl->bsid != (u32) ~ 0) - { - vlib_cli_output (vm, "· BSID %U", - format_mpls_unicast_label, steer_pl->bsid); - } - else - { - if (steer_pl->nh_type == SR_STEER_IPV4) - { - vlib_cli_output (vm, "· Next-hop %U", - format_ip4_address, &steer_pl->next_hop.ip4); - } - else if (steer_pl->nh_type == SR_STEER_IPV6) - { - vlib_cli_output (vm, "· Next-hop %U", - format_ip6_address, &steer_pl->next_hop.ip6); - } - - u32 *color_i = 0; - u8 *s = NULL; - s = format (s, "[ "); - vec_foreach (color_i, steer_pl->color) - { - s = format (s, "%d, ", *color_i); - } - s = format (s, "\b\b ]"); - vlib_cli_output (vm, "· Color %s", s); - - switch (steer_pl->co_bits) - { - case SR_TE_CO_BITS_00: - vlib_cli_output (vm, "· CO-bits: 00"); - break; - case SR_TE_CO_BITS_01: - vlib_cli_output (vm, "· CO-bits: 01"); - break; - case SR_TE_CO_BITS_10: - vlib_cli_output (vm, "· CO-bits: 10"); - break; - case SR_TE_CO_BITS_11: - vlib_cli_output (vm, "· CO-bits: 11"); - break; - } - } - } - return 0; -} - -VLIB_CLI_COMMAND(show_sr_mpls_steering_policies_command, static)= -{ - .path = "show sr mpls steering policies", - .short_help = "show sr mpls steering policies", - .function = show_sr_mpls_steering_policies_command_fn, -}; - -clib_error_t * -sr_mpls_steering_init (vlib_main_t * vm) -{ - mpls_sr_main_t *sm = &sr_mpls_main; - - /* Init memory for function keys */ - sm->sr_steer_policies_hash.hash = NULL; - - sm->fib_table_EC = (u32) ~ 0; - sm->ec_labels = 0; - - return 0; -} - -VLIB_INIT_FUNCTION(sr_mpls_steering_init); - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: eval: (c-set-style "gnu") End: - */ |