nat: replace main vlib with per-thread vlib - vpp

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author	Klement Sekera <ksekera@cisco.com>	2021-03-05 20:34:05 +0100
committer	Klement Sekera <ksekera@cisco.com>	2021-03-07 23:39:25 +0000
commit	e3416e307e263dc565546c4e748df99b584708a0 (patch)
tree	b80f0f327fee5c9f946ab4f19b5d825e2828b7cc /src/plugins/svs/CMakeLists.txt
parent	76401c5767ecdf701f4c77beee0b721c485321d5 (diff)

nat: replace main vlib with per-thread vlib

Fix incorrect vlib main usage. Type: fix Signed-off-by: Klement Sekera <ksekera@cisco.com> Change-Id: Ic5304ca844f1b27756818eb6995b1d9c08412674

Diffstat (limited to 'src/plugins/svs/CMakeLists.txt')

0 files changed, 0 insertions, 0 deletions

/* * sr_mpls_policy.c: SR-MPLS policies * * 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 SR MPLS policy creation and application * * Create an SR policy. * An SR policy can be either of 'default' type or 'spray' type * An SR policy has attached a list of SID lists. * In case the SR policy is a default one it will load balance among them. * An SR policy has associated a BindingSID. * In case any packet arrives with MPLS_label == BindingSID then the SR policy * associated to such bindingSID will be applied to such packet. * */ #include <vlib/vlib.h> #include <vnet/vnet.h> #include <vnet/srmpls/sr.h> #include <vnet/fib/mpls_fib.h> #include <vnet/dpo/dpo.h> #include <vnet/dpo/replicate_dpo.h> #include <vnet/dpo/mpls_label_dpo.h> #include <vnet/dpo/lookup_dpo.h> #include <vppinfra/error.h> #include <vppinfra/elog.h> mpls_sr_main_t sr_mpls_main; /*************************** SR LB helper functions **************************/ /** * @brief Creates a Segment List and adds it to an SR policy * * Creates a Segment List and adds it to the SR policy. Notice that the SL are * not necessarily unique. Hence there might be two Segment List within the * same SR Policy with exactly the same segments and same weight. * * @param sr_policy is the SR policy where the SL will be added * @param sl is a vector of IPv6 addresses composing the Segment List * @param weight is the weight of the SegmentList (for load-balancing purposes) * @param is_encap represents the mode (SRH insertion vs Encapsulation) * * @return pointer to the just created segment list */ static inline mpls_sr_sl_t * create_sl (mpls_sr_policy_t * sr_policy, mpls_label_t * sl, u32 weight) { mpls_sr_main_t *sm = &sr_mpls_main; mpls_sr_sl_t *segment_list; pool_get (sm->sid_lists, segment_list); memset (segment_list, 0, sizeof (*segment_list)); vec_add1 (sr_policy->segments_lists, segment_list - sm->sid_lists); /* Fill in segment list */ segment_list->weight = (weight != (u32) ~ 0 ? weight : SR_SEGMENT_LIST_WEIGHT_DEFAULT); segment_list->segments = vec_dup (sl); fib_route_path_t path = { .frp_proto = DPO_PROTO_MPLS, .frp_sw_if_index = ~0, .frp_fib_index = 0, .frp_weight = segment_list->weight, .frp_flags = FIB_ROUTE_PATH_FLAG_NONE, .frp_label_stack = NULL, .frp_local_label = sl[0], }; vec_add (path.frp_label_stack, sl + 1, vec_len (sl) - 1); fib_route_path_t *paths = NULL; vec_add1 (paths, path); mpls_eos_bit_t eos; FOR_EACH_MPLS_EOS_BIT (eos) { /* *INDENT-OFF* */ fib_prefix_t pfx = { .fp_len = 21, .fp_proto = FIB_PROTOCOL_MPLS, .fp_label = sr_policy->bsid, .fp_eos = eos, .fp_payload_proto = DPO_PROTO_MPLS, }; /* *INDENT-ON* */ fib_table_entry_path_add2 (0, &pfx, FIB_SOURCE_SR, (sr_policy->type == SR_POLICY_TYPE_DEFAULT ? FIB_ENTRY_FLAG_NONE : FIB_ENTRY_FLAG_MULTICAST), paths); } vec_free (paths); return segment_list; } /******************************* SR rewrite API *******************************/ /* Three functions for handling sr policies: * -> sr_mpls_policy_add * -> sr_mpls_policy_del * -> sr_mpls_policy_mod * All of them are API. CLI function on sr_policy_command_fn */ /** * @brief Create a new SR policy * * @param bsid is the bindingSID of the SR Policy * @param segments is a vector of MPLS labels composing the segment list * @param behavior is the behavior of the SR policy. (default//spray) * @param fib_table is the VRF where to install the FIB entry for the BSID * @param weight is the weight of this specific SID list * * @return 0 if correct, else error */ int sr_mpls_policy_add (mpls_label_t bsid, mpls_label_t * segments, u8 behavior, u32 weight) { mpls_sr_main_t *sm = &sr_mpls_main; mpls_sr_policy_t *sr_policy = 0; uword *p; /* Search for existing keys (BSID) */ p = hash_get (sm->sr_policies_index_hash, bsid); if (p) { /* Add SR policy that already exists; complain */ return -12; } /* Add an SR policy object */ pool_get (sm->sr_policies, sr_policy); memset (sr_policy, 0, sizeof (*sr_policy)); sr_policy->bsid = bsid; sr_policy->type = behavior; /* Copy the key */ hash_set (sm->sr_policies_index_hash, bsid, sr_policy - sm->sr_policies); /* Create a segment list and add the index to the SR policy */ create_sl (sr_policy, segments, weight); return 0; } /** * @brief Delete a SR policy * * @param bsid is the bindingSID of the SR Policy * @param index is the index of the SR policy * * @return 0 if correct, else error */ int sr_mpls_policy_del (mpls_label_t bsid, u32 index) { mpls_sr_main_t *sm = &sr_mpls_main; mpls_sr_policy_t *sr_policy = 0; mpls_sr_sl_t *segment_list; mpls_eos_bit_t eos; u32 *sl_index; uword *p; if (bsid) { p = hash_get (sm->sr_policies_index_hash, bsid); if (p) sr_policy = pool_elt_at_index (sm->sr_policies, p[0]); else return -1; } else { sr_policy = pool_elt_at_index (sm->sr_policies, index); if (!sr_policy) return -1; } /* Clean SID Lists */ vec_foreach (sl_index, sr_policy->segments_lists) { segment_list = pool_elt_at_index (sm->sid_lists, *sl_index); fib_route_path_t path = { .frp_proto = DPO_PROTO_MPLS, .frp_sw_if_index = ~0, .frp_fib_index = 0, .frp_weight = segment_list->weight, .frp_flags = FIB_ROUTE_PATH_FLAG_NONE, .frp_local_label = segment_list->segments[0], }; fib_route_path_t *paths = NULL; vec_add1 (paths, path); /* remove each of the MPLS routes */ FOR_EACH_MPLS_EOS_BIT (eos) { /* *INDENT-OFF* */ fib_prefix_t pfx = { .fp_len = 21, .fp_proto = FIB_PROTOCOL_MPLS, .fp_label = sr_policy->bsid, .fp_eos = eos, .fp_payload_proto = DPO_PROTO_MPLS, }; /* *INDENT-ON* */ fib_table_entry_path_remove2 (0, &pfx, FIB_SOURCE_SR, paths); } vec_free (paths); vec_free (segment_list->segments); pool_put_index (sm->sid_lists, *sl_index); } /* Remove SR policy entry */ hash_unset (sm->sr_policies_index_hash, sr_policy->bsid); pool_put (sm->sr_policies, sr_policy); return 0; } /** * @brief Modify an existing SR policy * * The possible modifications are adding a new Segment List, modifying an * existing Segment List (modify the weight only) and delete a given * Segment List from the SR Policy. * * @param bsid is the bindingSID of the SR Policy * @param index is the index of the SR policy * @param fib_table is the VRF where to install the FIB entry for the BSID * @param operation is the operation to perform (among the top ones) * @param segments is a vector of IPv6 address composing the segment list * @param sl_index is the index of the Segment List to modify/delete * @param weight is the weight of the sid list. optional. * * @return 0 if correct, else error */ int sr_mpls_policy_mod (mpls_label_t bsid, u32 index, u8 operation, mpls_label_t * segments, u32 sl_index, u32 weight) { mpls_sr_main_t *sm = &sr_mpls_main; mpls_sr_policy_t *sr_policy = 0; mpls_sr_sl_t *segment_list; u32 *sl_index_iterate; uword *p; if (bsid) { p = hash_get (sm->sr_policies_index_hash, bsid); if (p) sr_policy = pool_elt_at_index (sm->sr_policies, p[0]); else return -1; } else { sr_policy = pool_elt_at_index (sm->sr_policies, index); if (!sr_policy) return -1; } if (operation == 1) /* Add SR List to an existing SR policy */ { /* Create the new SL */ segment_list = create_sl (sr_policy, segments, weight); } else if (operation == 2) /* Delete SR List from an existing SR policy */ { /* Check that currently there are more than one SID list */ if (vec_len (sr_policy->segments_lists) == 1) return -21; /* Check that the SR list does exist and is assigned to the sr policy */ vec_foreach (sl_index_iterate, sr_policy->segments_lists) if (*sl_index_iterate == sl_index) break; if (*sl_index_iterate != sl_index) return -22; /* Remove the lucky SR list that is being kicked out */ segment_list = pool_elt_at_index (sm->sid_lists, sl_index); mpls_eos_bit_t eos; fib_route_path_t path = { .frp_proto = DPO_PROTO_MPLS, .frp_sw_if_index = ~0, .frp_fib_index = 0, .frp_weight = segment_list->weight, .frp_flags = FIB_ROUTE_PATH_FLAG_NONE, .frp_local_label = segment_list->segments[0], }; fib_route_path_t *paths = NULL; vec_add1 (paths, path); FOR_EACH_MPLS_EOS_BIT (eos) { /* *INDENT-OFF* */ fib_prefix_t pfx = { .fp_len = 21, .fp_proto = FIB_PROTOCOL_MPLS, .fp_label = sr_policy->bsid, .fp_eos = eos, .fp_payload_proto = DPO_PROTO_MPLS, }; /* *INDENT-ON* */ fib_table_entry_path_remove2 (0, &pfx, FIB_SOURCE_SR, paths); } vec_free (paths); vec_free (segment_list->segments); pool_put_index (sm->sid_lists, sl_index); vec_del1 (sr_policy->segments_lists, sl_index_iterate - sr_policy->segments_lists); } else if (operation == 3) /* Modify the weight of an existing SR List */ { /* Find the corresponding SL */ vec_foreach (sl_index_iterate, sr_policy->segments_lists) if (*sl_index_iterate == sl_index) break; if (*sl_index_iterate != sl_index) return -32; /* Change the weight */ segment_list = pool_elt_at_index (sm->sid_lists, sl_index); segment_list->weight = weight; /* Update LB */ //FIXME } return 0; } /** * @brief CLI for 'sr mpls policies' command family */ static clib_error_t * sr_mpls_policy_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { int rv = -1; char is_del = 0, is_add = 0, is_mod = 0; char policy_set = 0; mpls_label_t bsid, next_label; u32 sr_policy_index = (u32) ~ 0, sl_index = (u32) ~ 0; u32 weight = (u32) ~ 0; mpls_label_t *segments = 0; u8 operation = 0; u8 is_spray = 0; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (!is_add && !is_mod && !is_del && unformat (input, "add")) is_add = 1; else if (!is_add && !is_mod && !is_del && unformat (input, "del")) is_del = 1; else if (!is_add && !is_mod && !is_del && unformat (input, "mod")) is_mod = 1; else if (!policy_set && unformat (input, "bsid %U", unformat_mpls_unicast_label, &bsid)) policy_set = 1; else if (!is_add && !policy_set && unformat (input, "index %d", &sr_policy_index)) policy_set = 1; else if (unformat (input, "weight %d", &weight)); else if (unformat (input, "next %U", unformat_mpls_unicast_label, &next_label)) { vec_add (segments, &next_label, 1); } else if (unformat (input, "add sl")) operation = 1; else if (unformat (input, "del sl index %d", &sl_index)) operation = 2; else if (unformat (input, "mod sl index %d", &sl_index)) operation = 3; else if (unformat (input, "spray")) is_spray = 1; else break; } if (!is_add && !is_mod && !is_del) return clib_error_return (0, "Incorrect CLI"); if (!policy_set) return clib_error_return (0, "No SR policy BSID or index specified"); if (is_add) { if (vec_len (segments) == 0) return clib_error_return (0, "No Segment List specified"); rv = sr_mpls_policy_add (bsid, segments, (is_spray ? SR_POLICY_TYPE_SPRAY : SR_POLICY_TYPE_DEFAULT), weight); } else if (is_del) rv = sr_mpls_policy_del ((sr_policy_index != (u32) ~ 0 ? (u32) ~ 0 : bsid), sr_policy_index); else if (is_mod) { if (!operation) return clib_error_return (0, "No SL modification specified"); if (operation != 1 && sl_index == (u32) ~ 0) return clib_error_return (0, "No Segment List index specified"); if (operation == 1 && vec_len (segments) == 0) return clib_error_return (0, "No Segment List specified"); if (operation == 3 && weight == (u32) ~ 0) return clib_error_return (0, "No new weight for the SL specified"); rv = sr_mpls_policy_mod ((sr_policy_index != (u32) ~ 0 ? (u32) ~ 0 : bsid), sr_policy_index, operation, segments, sl_index, weight); } switch (rv) { case 0: break; case 1: return 0; case -12: return clib_error_return (0, "There is already a FIB entry for the BindingSID address.\n" "The SR policy could not be created."); case -21: return clib_error_return (0, "The selected SR policy only contains ONE segment list. " "Please remove the SR policy instead"); case -22: return clib_error_return (0, "Could not delete the segment list. " "It is not associated with that SR policy."); case -32: return clib_error_return (0, "Could not modify the segment list. " "The given SL is not associated with such SR policy."); default: return clib_error_return (0, "BUG: sr policy returns %d", rv); } return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (sr_mpls_policy_command, static) = { .path = "sr mpls policy", .short_help = "sr mpls policy [add||del||mod] bsid 2999 " "next 10 next 20 next 30 (weight 1) (spray)", .long_help = "TBD.\n", .function = sr_mpls_policy_command_fn, }; /* *INDENT-ON* */ /** * @brief CLI to display onscreen all the SR MPLS policies */ static clib_error_t * show_sr_mpls_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_sl_t *segment_list = 0; mpls_sr_policy_t *sr_policy = 0; mpls_sr_policy_t **vec_policies = 0; mpls_label_t *label; u32 *sl_index; u8 *s; int i = 0; vlib_cli_output (vm, "SR MPLS policies:"); /* *INDENT-OFF* */ pool_foreach (sr_policy, sm->sr_policies, {vec_add1 (vec_policies, sr_policy); } ); /* *INDENT-ON* */ vec_foreach_index (i, vec_policies) { sr_policy = vec_policies[i]; vlib_cli_output (vm, "[%u].-\tBSID: %U", (u32) (sr_policy - sm->sr_policies), format_mpls_unicast_label, sr_policy->bsid); vlib_cli_output (vm, "\tType: %s", (sr_policy->type == SR_POLICY_TYPE_DEFAULT ? "Default" : "Spray")); vlib_cli_output (vm, "\tSegment Lists:"); vec_foreach (sl_index, sr_policy->segments_lists) { s = NULL; segment_list = pool_elt_at_index (sm->sid_lists, *sl_index); s = format (s, "\t[%u].- ", *sl_index); s = format (s, "< "); vec_foreach (label, segment_list->segments) { s = format (s, "%U, ", format_mpls_unicast_label, *label); } s = format (s, "\b\b > "); vlib_cli_output (vm, " %s", s); } vlib_cli_output (vm, "-----------"); } vec_free (vec_policies); return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (show_sr_mpls_policies_command, static) = { .path = "show sr mpls policies", .short_help = "show sr mpls policies", .function = show_sr_mpls_policies_command_fn, }; /* *INDENT-ON* */ /********************* SR MPLS Policy initialization ***********************/ /** * @brief SR MPLS Policy initialization */ clib_error_t * sr_mpls_policy_rewrite_init (vlib_main_t * vm) { mpls_sr_main_t *sm = &sr_mpls_main; /* Init memory for sr policy keys (bsid <-> ip6_address_t) */ sm->sr_policies_index_hash = hash_create (0, sizeof (mpls_label_t)); return 0; } VLIB_INIT_FUNCTION (sr_mpls_policy_rewrite_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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