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-rw-r--r--src/vnet/srmpls/sr_mpls_steering.c897
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:
- */