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Diffstat (limited to 'src/vnet/sr/sr_localsid.c')
| -rwxr-xr-x | src/vnet/sr/sr_localsid.c | 1492 |
1 files changed, 0 insertions, 1492 deletions
diff --git a/src/vnet/sr/sr_localsid.c b/src/vnet/sr/sr_localsid.c deleted file mode 100755 index 32fc5f823ef..00000000000 --- a/src/vnet/sr/sr_localsid.c +++ /dev/null @@ -1,1492 +0,0 @@ -/* - * sr_localsid.c: ipv6 segment routing Endpoint behaviors - * - * 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 Processing of packets with a SRH - * - * CLI to define new Segment Routing End processing functions. - * Graph node to support such functions. - * - * Each function associates an SRv6 segment (IPv6 address) with an specific - * Segment Routing function. - * - */ - -#include <vlib/vlib.h> -#include <vnet/vnet.h> -#include <vnet/sr/sr.h> -#include <vnet/ip/ip.h> -#include <vnet/sr/sr_packet.h> -#include <vnet/ip/ip6_packet.h> -#include <vnet/fib/ip6_fib.h> -#include <vnet/dpo/dpo.h> -#include <vnet/adj/adj.h> - -#include <vppinfra/error.h> -#include <vppinfra/elog.h> - -/** - * @brief Dynamically added SR localsid DPO type - */ -static dpo_type_t sr_localsid_dpo_type; -static dpo_type_t sr_localsid_d_dpo_type; - -/** - * @brief SR localsid add/del - * - * Function to add or delete SR LocalSIDs. - * - * @param is_del Boolean of whether its a delete instruction - * @param localsid_addr IPv6 address of the localsid - * @param is_decap Boolean of whether decapsulation is allowed in this function - * @param behavior Type of behavior (function) for this localsid - * @param sw_if_index Only for L2/L3 xconnect. OIF. In VRF variant the fib_table. - * @param vlan_index Only for L2 xconnect. Outgoing VLAN tag. - * @param fib_table FIB table in which we should install the localsid entry - * @param nh_addr Next Hop IPv4/IPv6 address. Only for L2/L3 xconnect. - * - * @return 0 on success, error otherwise. - */ -int -sr_cli_localsid (char is_del, ip6_address_t * localsid_addr, - char end_psp, u8 behavior, u32 sw_if_index, u32 vlan_index, - u32 fib_table, ip46_address_t * nh_addr, void *ls_plugin_mem) -{ - ip6_sr_main_t *sm = &sr_main; - uword *p; - int rv; - - ip6_sr_localsid_t *ls = 0; - - dpo_id_t dpo = DPO_INVALID; - - /* Search for the item */ - p = mhash_get (&sm->sr_localsids_index_hash, localsid_addr); - - if (p) - { - if (is_del) - { - /* Retrieve localsid */ - ls = pool_elt_at_index (sm->localsids, p[0]); - /* Delete FIB entry */ - fib_prefix_t pfx = { - .fp_proto = FIB_PROTOCOL_IP6, - .fp_len = 128, - .fp_addr = { - .ip6 = *localsid_addr, - } - }; - - fib_table_entry_delete (fib_table_find (FIB_PROTOCOL_IP6, - fib_table), - &pfx, FIB_SOURCE_SR); - - /* In case it is a Xconnect iface remove the (OIF, NHOP) adj */ - if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX6 - || ls->behavior == SR_BEHAVIOR_DX4) - adj_unlock (ls->nh_adj); - - if (ls->behavior >= SR_BEHAVIOR_LAST) - { - sr_localsid_fn_registration_t *plugin = 0; - plugin = pool_elt_at_index (sm->plugin_functions, - ls->behavior - SR_BEHAVIOR_LAST); - - /* Callback plugin removal function */ - rv = plugin->removal (ls); - } - - /* Delete localsid registry */ - pool_put (sm->localsids, ls); - mhash_unset (&sm->sr_localsids_index_hash, localsid_addr, NULL); - return 1; - } - else /* create with function already existing; complain */ - return -1; - } - else - /* delete; localsid does not exist; complain */ - if (is_del) - return -2; - - /* Check whether there exists a FIB entry with such address */ - fib_prefix_t pfx = { - .fp_proto = FIB_PROTOCOL_IP6, - .fp_len = 128, - }; - - pfx.fp_addr.as_u64[0] = localsid_addr->as_u64[0]; - pfx.fp_addr.as_u64[1] = localsid_addr->as_u64[1]; - - /* Lookup the FIB index associated to the table id provided */ - u32 fib_index = fib_table_find (FIB_PROTOCOL_IP6, fib_table); - if (fib_index == ~0) - return -3; - - /* Lookup the localsid in such FIB table */ - fib_node_index_t fei = fib_table_lookup_exact_match (fib_index, &pfx); - if (FIB_NODE_INDEX_INVALID != fei) - return -4; //There is an entry for such address (the localsid addr) - - /* Create a new localsid registry */ - pool_get (sm->localsids, ls); - memset (ls, 0, sizeof (*ls)); - - clib_memcpy (&ls->localsid, localsid_addr, sizeof (ip6_address_t)); - ls->end_psp = end_psp; - ls->behavior = behavior; - ls->nh_adj = (u32) ~ 0; - ls->fib_table = fib_table; - switch (behavior) - { - case SR_BEHAVIOR_END: - break; - case SR_BEHAVIOR_X: - ls->sw_if_index = sw_if_index; - clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t)); - break; - case SR_BEHAVIOR_DX4: - ls->sw_if_index = sw_if_index; - clib_memcpy (&ls->next_hop.ip4, &nh_addr->ip4, sizeof (ip4_address_t)); - break; - case SR_BEHAVIOR_DX6: - ls->sw_if_index = sw_if_index; - clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t)); - break; - case SR_BEHAVIOR_DT6: - ls->vrf_index = sw_if_index; - break; - case SR_BEHAVIOR_DX2: - ls->sw_if_index = sw_if_index; - ls->vlan_index = vlan_index; - break; - } - - /* Figure out the adjacency magic for Xconnect variants */ - if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX4 - || ls->behavior == SR_BEHAVIOR_DX6) - { - adj_index_t nh_adj_index = ADJ_INDEX_INVALID; - - /* Retrieve the adjacency corresponding to the (OIF, next_hop) */ - if (ls->behavior == SR_BEHAVIOR_DX6 || ls->behavior == SR_BEHAVIOR_X) - nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP6, VNET_LINK_IP6, - nh_addr, sw_if_index); - - else if (ls->behavior == SR_BEHAVIOR_DX4) - nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP4, VNET_LINK_IP4, - nh_addr, sw_if_index); - - /* Check for ADJ creation error. If so panic */ - if (nh_adj_index == ADJ_INDEX_INVALID) - { - pool_put (sm->localsids, ls); - return -5; - } - - ls->nh_adj = nh_adj_index; - } - - /* Set DPO */ - if (ls->behavior == SR_BEHAVIOR_END || ls->behavior == SR_BEHAVIOR_X) - dpo_set (&dpo, sr_localsid_dpo_type, DPO_PROTO_IP6, ls - sm->localsids); - else if (ls->behavior > SR_BEHAVIOR_D_FIRST - && ls->behavior < SR_BEHAVIOR_LAST) - dpo_set (&dpo, sr_localsid_d_dpo_type, DPO_PROTO_IP6, ls - sm->localsids); - else if (ls->behavior >= SR_BEHAVIOR_LAST) - { - sr_localsid_fn_registration_t *plugin = 0; - plugin = pool_elt_at_index (sm->plugin_functions, - ls->behavior - SR_BEHAVIOR_LAST); - /* Copy the unformat memory result */ - ls->plugin_mem = ls_plugin_mem; - /* Callback plugin creation function */ - rv = plugin->creation (ls); - if (rv) - { - pool_put (sm->localsids, ls); - return -6; - } - dpo_set (&dpo, plugin->dpo, DPO_PROTO_IP6, ls - sm->localsids); - } - - /* Set hash key for searching localsid by address */ - mhash_set (&sm->sr_localsids_index_hash, localsid_addr, ls - sm->localsids, - NULL); - - fib_table_entry_special_dpo_add (fib_index, &pfx, FIB_SOURCE_SR, - FIB_ENTRY_FLAG_EXCLUSIVE, &dpo); - dpo_reset (&dpo); - - /* Set counter to zero */ - vlib_validate_combined_counter (&(sm->sr_ls_valid_counters), - ls - sm->localsids); - vlib_validate_combined_counter (&(sm->sr_ls_invalid_counters), - ls - sm->localsids); - - vlib_zero_combined_counter (&(sm->sr_ls_valid_counters), - ls - sm->localsids); - vlib_zero_combined_counter (&(sm->sr_ls_invalid_counters), - ls - sm->localsids); - - return 0; -} - -/** - * @brief SR LocalSID CLI function. - * - * @see sr_cli_localsid - */ -static clib_error_t * -sr_cli_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - vnet_main_t *vnm = vnet_get_main (); - ip6_sr_main_t *sm = &sr_main; - u32 sw_if_index = (u32) ~ 0, vlan_index = (u32) ~ 0, fib_index = 0; - int is_del = 0; - int end_psp = 0; - ip6_address_t resulting_address; - ip46_address_t next_hop; - char address_set = 0; - char behavior = 0; - void *ls_plugin_mem = 0; - - int rv; - - memset (&resulting_address, 0, sizeof (ip6_address_t)); - ip46_address_reset (&next_hop); - - while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (input, "del")) - is_del = 1; - else if (!address_set - && unformat (input, "address %U", unformat_ip6_address, - &resulting_address)) - address_set = 1; - else if (!address_set - && unformat (input, "addr %U", unformat_ip6_address, - &resulting_address)) - address_set = 1; - else if (unformat (input, "fib-table %u", &fib_index)); - else if (vlan_index == (u32) ~ 0 - && unformat (input, "vlan %u", &vlan_index)); - else if (!behavior && unformat (input, "behavior")) - { - if (unformat (input, "end.x %U %U", - unformat_vnet_sw_interface, vnm, &sw_if_index, - unformat_ip6_address, &next_hop.ip6)) - behavior = SR_BEHAVIOR_X; - else if (unformat (input, "end.dx6 %U %U", - unformat_vnet_sw_interface, vnm, &sw_if_index, - unformat_ip6_address, &next_hop.ip6)) - behavior = SR_BEHAVIOR_DX6; - else if (unformat (input, "end.dx4 %U %U", - unformat_vnet_sw_interface, vnm, &sw_if_index, - unformat_ip4_address, &next_hop.ip4)) - behavior = SR_BEHAVIOR_DX4; - else if (unformat (input, "end.dx2 %U", - unformat_vnet_sw_interface, vnm, &sw_if_index)) - behavior = SR_BEHAVIOR_DX2; - else if (unformat (input, "end.dt6 %u", &sw_if_index)) - behavior = SR_BEHAVIOR_DT6; - else if (unformat (input, "end.dt4 %u", &sw_if_index)) - behavior = SR_BEHAVIOR_DT4; - else - { - /* Loop over all the plugin behavior format functions */ - sr_localsid_fn_registration_t *plugin = 0, **vec_plugins = 0; - sr_localsid_fn_registration_t **plugin_it = 0; - - /* Create a vector out of the plugin pool as recommended */ - /* *INDENT-OFF* */ - pool_foreach (plugin, sm->plugin_functions, - { - vec_add1 (vec_plugins, plugin); - }); - /* *INDENT-ON* */ - - vec_foreach (plugin_it, vec_plugins) - { - if (unformat - (input, "%U", (*plugin_it)->ls_unformat, &ls_plugin_mem)) - { - behavior = (*plugin_it)->sr_localsid_function_number; - break; - } - } - } - - if (!behavior) - { - if (unformat (input, "end")) - behavior = SR_BEHAVIOR_END; - else - break; - } - } - else if (!end_psp && unformat (input, "psp")) - end_psp = 1; - else - break; - } - - if (!behavior && end_psp) - behavior = SR_BEHAVIOR_END; - - if (!address_set) - return clib_error_return (0, - "Error: SRv6 LocalSID address is mandatory."); - if (!is_del && !behavior) - return clib_error_return (0, - "Error: SRv6 LocalSID behavior is mandatory."); - if (vlan_index != (u32) ~ 0) - return clib_error_return (0, - "Error: SRv6 End.DX2 with rewrite VLAN tag not supported by now."); - if (end_psp && !(behavior == SR_BEHAVIOR_END || behavior == SR_BEHAVIOR_X)) - return clib_error_return (0, - "Error: SRv6 PSP only compatible with End and End.X"); - - rv = sr_cli_localsid (is_del, &resulting_address, end_psp, behavior, - sw_if_index, vlan_index, fib_index, &next_hop, - ls_plugin_mem); - - switch (rv) - { - case 0: - break; - case 1: - return 0; - case -1: - return clib_error_return (0, - "Identical localsid already exists. Requested localsid not created."); - case -2: - return clib_error_return (0, - "The requested localsid could not be deleted. SR localsid not found"); - case -3: - return clib_error_return (0, "FIB table %u does not exist", fib_index); - case -4: - return clib_error_return (0, "There is already one FIB entry for the" - "requested localsid non segment routing related"); - case -5: - return clib_error_return (0, - "Could not create ARP/ND entry for such next_hop. Internal error."); - case -6: - return clib_error_return (0, - "Error on the plugin based localsid creation."); - default: - return clib_error_return (0, "BUG: sr localsid returns %d", rv); - } - return 0; -} - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (sr_localsid_command, static) = { - .path = "sr localsid", - .short_help = "sr localsid (del) address XX:XX::YY:YY" - "(fib-table 8) behavior STRING", - .long_help = - "Create SR LocalSID and binds it to a particular behavior\n" - "Arguments:\n" - "\tlocalSID IPv6_addr(128b) LocalSID IPv6 address\n" - "\t(fib-table X) Optional. VRF where to install SRv6 localsid\n" - "\tbehavior STRING Specifies the behavior\n" - "\n\tBehaviors:\n" - "\tEnd\t-> Endpoint.\n" - "\tEnd.X\t-> Endpoint with decapsulation and Layer-3 cross-connect.\n" - "\t\tParameters: '<iface> <ip6_next_hop>'\n" - "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n" - "\t\tParameters: '<iface>'\n" - "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n" - "\t\tParameters: '<iface> <ip6_next_hop>'\n" - "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n" - "\t\tParameters: '<iface> <ip4_next_hop>'\n" - "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n" - "\t\tParameters: '<ip6_fib_table>'\n" - "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n" - "\t\tParameters: '<ip4_fib_table>'\n", - .function = sr_cli_localsid_command_fn, -}; -/* *INDENT-ON* */ - -/** - * @brief CLI function to 'show' all SR LocalSIDs on console. - */ -static clib_error_t * -show_sr_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - vnet_main_t *vnm = vnet_get_main (); - ip6_sr_main_t *sm = &sr_main; - ip6_sr_localsid_t **localsid_list = 0; - ip6_sr_localsid_t *ls; - int i; - - vlib_cli_output (vm, "SRv6 - My LocalSID Table:"); - vlib_cli_output (vm, "========================="); - /* *INDENT-OFF* */ - pool_foreach (ls, sm->localsids, ({ vec_add1 (localsid_list, ls); })); - /* *INDENT-ON* */ - for (i = 0; i < vec_len (localsid_list); i++) - { - ls = localsid_list[i]; - switch (ls->behavior) - { - case SR_BEHAVIOR_END: - vlib_cli_output (vm, "\tAddress: \t%U\n\tBehavior: \tEnd", - format_ip6_address, &ls->localsid); - break; - case SR_BEHAVIOR_X: - vlib_cli_output (vm, - "\tAddress: \t%U\n\tBehavior: \tX (Endpoint with Layer-3 cross-connect)" - "\n\tIface: \t%U\n\tNext hop: \t%U", - format_ip6_address, &ls->localsid, - format_vnet_sw_if_index_name, vnm, ls->sw_if_index, - format_ip6_address, &ls->next_hop.ip6); - break; - case SR_BEHAVIOR_DX4: - vlib_cli_output (vm, - "\tAddress: \t%U\n\tBehavior: \tDX4 (Endpoint with decapsulation and IPv4 cross-connect)" - "\n\tIface: \t%U\n\tNext hop: \t%U", - format_ip6_address, &ls->localsid, - format_vnet_sw_if_index_name, vnm, ls->sw_if_index, - format_ip4_address, &ls->next_hop.ip4); - break; - case SR_BEHAVIOR_DX6: - vlib_cli_output (vm, - "\tAddress: \t%U\n\tBehavior: \tDX6 (Endpoint with decapsulation and IPv6 cross-connect)" - "\n\tIface: \t%U\n\tNext hop: \t%U", - format_ip6_address, &ls->localsid, - format_vnet_sw_if_index_name, vnm, ls->sw_if_index, - format_ip6_address, &ls->next_hop.ip6); - break; - case SR_BEHAVIOR_DX2: - if (ls->vlan_index == (u32) ~ 0) - vlib_cli_output (vm, - "\tAddress: \t%U\n\tBehavior: \tDX2 (Endpoint with decapulation and Layer-2 cross-connect)" - "\n\tIface: \t%U", format_ip6_address, - &ls->localsid, format_vnet_sw_if_index_name, vnm, - ls->sw_if_index); - else - vlib_cli_output (vm, - "Unsupported yet. (DX2 with egress VLAN rewrite)"); - break; - case SR_BEHAVIOR_DT6: - vlib_cli_output (vm, - "\tAddress: \t%U\n\tBehavior: \tDT6 (Endpoint with decapsulation and specific IPv6 table lookup)" - "\n\tTable: %u", format_ip6_address, &ls->localsid, - ls->fib_table); - break; - case SR_BEHAVIOR_DT4: - vlib_cli_output (vm, - "\tAddress: \t%U\n\tBehavior: \tDT4 (Endpoint with decapsulation and specific IPv4 table lookup)" - "\n\tTable: \t%u", format_ip6_address, - &ls->localsid, ls->fib_table); - break; - default: - if (ls->behavior >= SR_BEHAVIOR_LAST) - { - sr_localsid_fn_registration_t *plugin = - pool_elt_at_index (sm->plugin_functions, - ls->behavior - SR_BEHAVIOR_LAST); - - vlib_cli_output (vm, "\tAddress: \t%U\n" - "\tBehavior: \t%s (%s)\n\t%U", - format_ip6_address, &ls->localsid, - plugin->keyword_str, plugin->def_str, - plugin->ls_format, ls->plugin_mem); - } - else - //Should never get here... - vlib_cli_output (vm, "Internal error"); - break; - } - if (ls->end_psp) - vlib_cli_output (vm, "\tPSP: \tTrue\n"); - - /* Print counters */ - vlib_counter_t valid, invalid; - vlib_get_combined_counter (&(sm->sr_ls_valid_counters), i, &valid); - vlib_get_combined_counter (&(sm->sr_ls_invalid_counters), i, &invalid); - vlib_cli_output (vm, "\tGood traffic: \t[%Ld packets : %Ld bytes]\n", - valid.packets, valid.bytes); - vlib_cli_output (vm, "\tBad traffic: \t[%Ld packets : %Ld bytes]\n", - invalid.packets, invalid.bytes); - vlib_cli_output (vm, "--------------------"); - } - return 0; -} - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (show_sr_localsid_command, static) = { - .path = "show sr localsids", - .short_help = "show sr localsids", - .function = show_sr_localsid_command_fn, -}; -/* *INDENT-ON* */ - -/** - * @brief Function to 'clear' ALL SR localsid counters - */ -static clib_error_t * -clear_sr_localsid_counters_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - ip6_sr_main_t *sm = &sr_main; - - vlib_clear_combined_counters (&(sm->sr_ls_valid_counters)); - vlib_clear_combined_counters (&(sm->sr_ls_invalid_counters)); - - return 0; -} - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (clear_sr_localsid_counters_command, static) = { - .path = "clear sr localsid counters", - .short_help = "clear sr localsid counters", - .function = clear_sr_localsid_counters_command_fn, -}; -/* *INDENT-ON* */ - -/************************ SR LocalSID graphs node ****************************/ -/** - * @brief SR localsid node trace - */ -typedef struct -{ - u32 localsid_index; - ip6_address_t src, out_dst; - u8 sr[256]; - u8 num_segments; - u8 segments_left; - //With SRv6 header update include flags here. -} sr_localsid_trace_t; - -#define foreach_sr_localsid_error \ -_(NO_INNER_HEADER, "(SR-Error) No inner IP header") \ -_(NO_MORE_SEGMENTS, "(SR-Error) No more segments") \ -_(NO_SRH, "(SR-Error) No SR header") \ -_(NO_PSP, "(SR-Error) PSP Not available (segments left > 0)") \ -_(NOT_LS, "(SR-Error) Decaps not available (segments left > 0)") \ -_(L2, "(SR-Error) SRv6 decapsulated a L2 frame without dest") - -typedef enum -{ -#define _(sym,str) SR_LOCALSID_ERROR_##sym, - foreach_sr_localsid_error -#undef _ - SR_LOCALSID_N_ERROR, -} sr_localsid_error_t; - -static char *sr_localsid_error_strings[] = { -#define _(sym,string) string, - foreach_sr_localsid_error -#undef _ -}; - -#define foreach_sr_localsid_next \ -_(ERROR, "error-drop") \ -_(IP6_LOOKUP, "ip6-lookup") \ -_(IP4_LOOKUP, "ip4-lookup") \ -_(IP6_REWRITE, "ip6-rewrite") \ -_(IP4_REWRITE, "ip4-rewrite") \ -_(INTERFACE_OUTPUT, "interface-output") - -typedef enum -{ -#define _(s,n) SR_LOCALSID_NEXT_##s, - foreach_sr_localsid_next -#undef _ - SR_LOCALSID_N_NEXT, -} sr_localsid_next_t; - -/** - * @brief SR LocalSID graph node trace function - * - * @see sr_localsid - */ -u8 * -format_sr_localsid_trace (u8 * s, va_list * args) -{ - CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); - CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); - ip6_sr_main_t *sm = &sr_main; - sr_localsid_trace_t *t = va_arg (*args, sr_localsid_trace_t *); - - ip6_sr_localsid_t *ls = - pool_elt_at_index (sm->localsids, t->localsid_index); - - s = - format (s, "SR-LOCALSID:\n\tLocalsid: %U\n", format_ip6_address, - &ls->localsid); - switch (ls->behavior) - { - case SR_BEHAVIOR_END: - s = format (s, "\tBehavior: End\n"); - break; - case SR_BEHAVIOR_DX6: - s = format (s, "\tBehavior: Decapsulation with IPv6 L3 xconnect\n"); - break; - case SR_BEHAVIOR_DX4: - s = format (s, "\tBehavior: Decapsulation with IPv4 L3 xconnect\n"); - break; - case SR_BEHAVIOR_X: - s = format (s, "\tBehavior: IPv6 L3 xconnect\n"); - break; - case SR_BEHAVIOR_DT6: - s = format (s, "\tBehavior: Decapsulation with IPv6 Table lookup\n"); - break; - case SR_BEHAVIOR_DT4: - s = format (s, "\tBehavior: Decapsulation with IPv4 Table lookup\n"); - break; - case SR_BEHAVIOR_DX2: - s = format (s, "\tBehavior: Decapsulation with L2 xconnect\n"); - break; - default: - s = format (s, "\tBehavior: defined in plugin\n"); //TODO - break; - } - if (t->num_segments != 0xFF) - { - if (t->num_segments > 0) - { - s = format (s, "\tSegments left: %d\n", t->num_segments); - s = format (s, "\tSID list: [in ietf order]"); - int i = 0; - for (i = 0; i < t->num_segments; i++) - { - s = format (s, "\n\t-> %U", format_ip6_address, - (ip6_address_t *) & t->sr[i * - sizeof (ip6_address_t)]); - } - } - } - return s; -} - -/** - * @brief Function doing End processing. - */ -static_always_inline void -end_srh_processing (vlib_node_runtime_t * node, - vlib_buffer_t * b0, - ip6_header_t * ip0, - ip6_sr_header_t * sr0, - ip6_sr_localsid_t * ls0, u32 * next0) -{ - ip6_address_t *new_dst0; - - if (PREDICT_TRUE (sr0->type == ROUTING_HEADER_TYPE_SR)) - { - if (PREDICT_TRUE (sr0->segments_left != 0)) - { - sr0->segments_left -= 1; - new_dst0 = (ip6_address_t *) (sr0->segments); - new_dst0 += sr0->segments_left; - ip0->dst_address.as_u64[0] = new_dst0->as_u64[0]; - ip0->dst_address.as_u64[1] = new_dst0->as_u64[1]; - - if (ls0->behavior == SR_BEHAVIOR_X) - { - vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj; - *next0 = SR_LOCALSID_NEXT_IP6_REWRITE; - } - } - else - { - *next0 = SR_LOCALSID_NEXT_ERROR; - b0->error = node->errors[SR_LOCALSID_ERROR_NO_MORE_SEGMENTS]; - } - } - else - { - /* Error. Routing header of type != SR */ - *next0 = SR_LOCALSID_NEXT_ERROR; - b0->error = node->errors[SR_LOCALSID_ERROR_NO_SRH]; - } -} - -/* - * @brief Function doing SRH processing for D* variants - */ -//FixME. I must crosscheck that next_proto matches the localsid -static_always_inline void -end_decaps_srh_processing (vlib_node_runtime_t * node, - vlib_buffer_t * b0, - ip6_header_t * ip0, - ip6_sr_header_t * sr0, - ip6_sr_localsid_t * ls0, u32 * next0) -{ - /* Compute the size of the IPv6 header with all Ext. headers */ - u8 next_proto; - ip6_ext_header_t *next_ext_header; - u16 total_size = 0; - - next_proto = ip0->protocol; - next_ext_header = (void *) (ip0 + 1); - total_size = sizeof (ip6_header_t); - while (ip6_ext_hdr (next_proto)) - { - total_size += ip6_ext_header_len (next_ext_header); - next_proto = next_ext_header->next_hdr; - next_ext_header = ip6_ext_next_header (next_ext_header); - } - - /* Ensure this is the last segment. Otherwise drop. */ - if (sr0 && sr0->segments_left != 0) - { - *next0 = SR_LOCALSID_NEXT_ERROR; - b0->error = node->errors[SR_LOCALSID_ERROR_NOT_LS]; - return; - } - - switch (next_proto) - { - case IP_PROTOCOL_IPV6: - /* Encap-End IPv6. Pop outer IPv6 header. */ - if (ls0->behavior == SR_BEHAVIOR_DX6) - { - vlib_buffer_advance (b0, total_size); - vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj; - *next0 = SR_LOCALSID_NEXT_IP6_REWRITE; - return; - } - else if (ls0->behavior == SR_BEHAVIOR_DT6) - { - vlib_buffer_advance (b0, total_size); - vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->fib_table; - return; - } - break; - case IP_PROTOCOL_IP_IN_IP: - /* Encap-End IPv4. Pop outer IPv6 header */ - if (ls0->behavior == SR_BEHAVIOR_DX4) - { - vlib_buffer_advance (b0, total_size); - vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj; - *next0 = SR_LOCALSID_NEXT_IP4_REWRITE; - return; - } - else if (ls0->behavior == SR_BEHAVIOR_DT4) - { - vlib_buffer_advance (b0, total_size); - vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->fib_table; - *next0 = SR_LOCALSID_NEXT_IP4_LOOKUP; - return; - } - break; - case IP_PROTOCOL_IP6_NONXT: - /* L2 encaps */ - if (ls0->behavior == SR_BEHAVIOR_DX2) - { - vlib_buffer_advance (b0, total_size); - vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->sw_if_index; - *next0 = SR_LOCALSID_NEXT_INTERFACE_OUTPUT; - return; - } - break; - } - *next0 = SR_LOCALSID_NEXT_ERROR; - b0->error = node->errors[SR_LOCALSID_ERROR_NO_INNER_HEADER]; - return; -} - -/** - * @brief Function doing End processing with PSP - */ -static_always_inline void -end_psp_srh_processing (vlib_node_runtime_t * node, - vlib_buffer_t * b0, - ip6_header_t * ip0, - ip6_ext_header_t * prev0, - ip6_sr_header_t * sr0, - ip6_sr_localsid_t * ls0, u32 * next0) -{ - u32 new_l0, sr_len; - u64 *copy_dst0, *copy_src0; - u32 copy_len_u64s0 = 0; - int i; - - if (PREDICT_TRUE (sr0->type == ROUTING_HEADER_TYPE_SR)) - { - if (PREDICT_TRUE (sr0->segments_left == 1)) - { - ip0->dst_address.as_u64[0] = sr0->segments->as_u64[0]; - ip0->dst_address.as_u64[1] = sr0->segments->as_u64[1]; - - /* Remove the SRH taking care of the rest of IPv6 ext header */ - if (prev0) - prev0->next_hdr = sr0->protocol; - else - ip0->protocol = sr0->protocol; - - sr_len = ip6_ext_header_len (sr0); - vlib_buffer_advance (b0, sr_len); - new_l0 = clib_net_to_host_u16 (ip0->payload_length) - sr_len; - ip0->payload_length = clib_host_to_net_u16 (new_l0); - copy_src0 = (u64 *) ip0; - copy_dst0 = copy_src0 + (sr0->length + 1); - /* number of 8 octet units to copy - * By default in absence of extension headers it is equal to length of ip6 header - * With extension headers it number of 8 octet units of ext headers preceding - * SR header - */ - copy_len_u64s0 = - (((u8 *) sr0 - (u8 *) ip0) - sizeof (ip6_header_t)) >> 3; - copy_dst0[4 + copy_len_u64s0] = copy_src0[4 + copy_len_u64s0]; - copy_dst0[3 + copy_len_u64s0] = copy_src0[3 + copy_len_u64s0]; - copy_dst0[2 + copy_len_u64s0] = copy_src0[2 + copy_len_u64s0]; - copy_dst0[1 + copy_len_u64s0] = copy_src0[1 + copy_len_u64s0]; - copy_dst0[0 + copy_len_u64s0] = copy_src0[0 + copy_len_u64s0]; - - for (i = copy_len_u64s0 - 1; i >= 0; i--) - { - copy_dst0[i] = copy_src0[i]; - } - - if (ls0->behavior == SR_BEHAVIOR_X) - { - vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj; - *next0 = SR_LOCALSID_NEXT_IP6_REWRITE; - } - return; - } - } - /* Error. Routing header of type != SR */ - *next0 = SR_LOCALSID_NEXT_ERROR; - b0->error = node->errors[SR_LOCALSID_ERROR_NO_PSP]; -} - -/** - * @brief SR LocalSID graph node. Supports all default SR Endpoint variants - */ -static uword -sr_localsid_d_fn (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - u32 n_left_from, next_index, *from, *to_next; - ip6_sr_main_t *sm = &sr_main; - from = vlib_frame_vector_args (from_frame); - n_left_from = from_frame->n_vectors; - next_index = node->cached_next_index; - u32 thread_index = vlib_get_thread_index (); - - while (n_left_from > 0) - { - u32 n_left_to_next; - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - /* Quad - Loop */ - while (n_left_from >= 8 && n_left_to_next >= 4) - { - u32 bi0, bi1, bi2, bi3; - vlib_buffer_t *b0, *b1, *b2, *b3; - ip6_header_t *ip0, *ip1, *ip2, *ip3; - ip6_ext_header_t *prev0, *prev1, *prev2, *prev3; - ip6_sr_header_t *sr0, *sr1, *sr2, *sr3; - u32 next0, next1, next2, next3; - next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP; - ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3; - - /* Prefetch next iteration. */ - { - vlib_buffer_t *p4, *p5, *p6, *p7; - - p4 = vlib_get_buffer (vm, from[4]); - p5 = vlib_get_buffer (vm, from[5]); - p6 = vlib_get_buffer (vm, from[6]); - p7 = vlib_get_buffer (vm, from[7]); - - /* Prefetch the buffer header and packet for the N+4 loop iteration */ - vlib_prefetch_buffer_header (p4, LOAD); - vlib_prefetch_buffer_header (p5, LOAD); - vlib_prefetch_buffer_header (p6, LOAD); - vlib_prefetch_buffer_header (p7, LOAD); - - CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE); - CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE); - CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE); - CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE); - } - - to_next[0] = bi0 = from[0]; - to_next[1] = bi1 = from[1]; - to_next[2] = bi2 = from[2]; - to_next[3] = bi3 = from[3]; - from += 4; - to_next += 4; - n_left_from -= 4; - n_left_to_next -= 4; - - b0 = vlib_get_buffer (vm, bi0); - b1 = vlib_get_buffer (vm, bi1); - b2 = vlib_get_buffer (vm, bi2); - b3 = vlib_get_buffer (vm, bi3); - - ls0 = - pool_elt_at_index (sm->localsids, - vnet_buffer (b0)->ip.adj_index[VLIB_TX]); - ls1 = - pool_elt_at_index (sm->localsids, - vnet_buffer (b0)->ip.adj_index[VLIB_TX]); - ls2 = - pool_elt_at_index (sm->localsids, - vnet_buffer (b0)->ip.adj_index[VLIB_TX]); - ls3 = - pool_elt_at_index (sm->localsids, - vnet_buffer (b0)->ip.adj_index[VLIB_TX]); - - ip0 = vlib_buffer_get_current (b0); - ip1 = vlib_buffer_get_current (b1); - ip2 = vlib_buffer_get_current (b2); - ip3 = vlib_buffer_get_current (b3); - - ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE); - ip6_ext_header_find_t (ip1, prev1, sr1, IP_PROTOCOL_IPV6_ROUTE); - ip6_ext_header_find_t (ip2, prev2, sr2, IP_PROTOCOL_IPV6_ROUTE); - ip6_ext_header_find_t (ip3, prev3, sr3, IP_PROTOCOL_IPV6_ROUTE); - - end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0); - end_decaps_srh_processing (node, b1, ip1, sr1, ls1, &next1); - end_decaps_srh_processing (node, b2, ip2, sr2, ls2, &next2); - end_decaps_srh_processing (node, b3, ip3, sr3, ls3, &next3); - - //TODO: trace. - - vlib_increment_combined_counter - (((next0 == - SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) : - &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids, - 1, vlib_buffer_length_in_chain (vm, b0)); - - vlib_increment_combined_counter - (((next1 == - SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) : - &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids, - 1, vlib_buffer_length_in_chain (vm, b1)); - - vlib_increment_combined_counter - (((next2 == - SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) : - &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids, - 1, vlib_buffer_length_in_chain (vm, b2)); - - vlib_increment_combined_counter - (((next3 == - SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) : - &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids, - 1, vlib_buffer_length_in_chain (vm, b3)); - - vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next, - n_left_to_next, bi0, bi1, bi2, bi3, - next0, next1, next2, next3); - } - - /* Single loop for potentially the last three packets */ - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 bi0; - vlib_buffer_t *b0; - ip6_header_t *ip0; - ip6_ext_header_t *prev0; - ip6_sr_header_t *sr0; - u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP; - ip6_sr_localsid_t *ls0; - - bi0 = from[0]; - to_next[0] = bi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, bi0); - ip0 = vlib_buffer_get_current (b0); - - /* Lookup the SR End behavior based on IP DA (adj) */ - ls0 = - pool_elt_at_index (sm->localsids, - vnet_buffer (b0)->ip.adj_index[VLIB_TX]); - - /* Find SRH as well as previous header */ - ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE); - - /* SRH processing and End variants */ - end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0); - - if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) - { - sr_localsid_trace_t *tr = - vlib_add_trace (vm, node, b0, sizeof (*tr)); - tr->num_segments = 0; - tr->localsid_index = ls0 - sm->localsids; - - if (ip0 == vlib_buffer_get_current (b0)) - { - clib_memcpy (tr->src.as_u8, ip0->src_address.as_u8, - sizeof (tr->src.as_u8)); - clib_memcpy (tr->out_dst.as_u8, ip0->dst_address.as_u8, - sizeof (tr->out_dst.as_u8)); - if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE - && sr0->type == ROUTING_HEADER_TYPE_SR) - { - clib_memcpy (tr->sr, sr0->segments, sr0->length * 8); - tr->num_segments = - sr0->length * 8 / sizeof (ip6_address_t); - tr->segments_left = sr0->segments_left; - } - } - else - tr->num_segments = 0xFF; - } - - /* Increase the counters */ - vlib_increment_combined_counter - (((next0 == - SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) : - &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids, - 1, vlib_buffer_length_in_chain (vm, b0)); - - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, - n_left_to_next, bi0, next0); - } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - return from_frame->n_vectors; -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (sr_localsid_d_node) = { - .function = sr_localsid_d_fn, - .name = "sr-localsid-d", - .vector_size = sizeof (u32), - .format_trace = format_sr_localsid_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - .n_errors = SR_LOCALSID_N_ERROR, - .error_strings = sr_localsid_error_strings, - .n_next_nodes = SR_LOCALSID_N_NEXT, - .next_nodes = { -#define _(s,n) [SR_LOCALSID_NEXT_##s] = n, - foreach_sr_localsid_next -#undef _ - }, -}; -/* *INDENT-ON* */ - -/** - * @brief SR LocalSID graph node. Supports all default SR Endpoint variants - */ -static uword -sr_localsid_fn (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - u32 n_left_from, next_index, *from, *to_next; - ip6_sr_main_t *sm = &sr_main; - from = vlib_frame_vector_args (from_frame); - n_left_from = from_frame->n_vectors; - next_index = node->cached_next_index; - u32 thread_index = vlib_get_thread_index (); - - while (n_left_from > 0) - { - u32 n_left_to_next; - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - /* Quad - Loop */ - while (n_left_from >= 8 && n_left_to_next >= 4) - { - u32 bi0, bi1, bi2, bi3; - vlib_buffer_t *b0, *b1, *b2, *b3; - ip6_header_t *ip0, *ip1, *ip2, *ip3; - ip6_sr_header_t *sr0, *sr1, *sr2, *sr3; - ip6_ext_header_t *prev0, *prev1, *prev2, *prev3; - u32 next0, next1, next2, next3; - next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP; - ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3; - - /* Prefetch next iteration. */ - { - vlib_buffer_t *p4, *p5, *p6, *p7; - - p4 = vlib_get_buffer (vm, from[4]); - p5 = vlib_get_buffer (vm, from[5]); - p6 = vlib_get_buffer (vm, from[6]); - p7 = vlib_get_buffer (vm, from[7]); - - /* Prefetch the buffer header and packet for the N+2 loop iteration */ - vlib_prefetch_buffer_header (p4, LOAD); - vlib_prefetch_buffer_header (p5, LOAD); - vlib_prefetch_buffer_header (p6, LOAD); - vlib_prefetch_buffer_header (p7, LOAD); - - CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE); - CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE); - CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE); - CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE); - } - - to_next[0] = bi0 = from[0]; - to_next[1] = bi1 = from[1]; - to_next[2] = bi2 = from[2]; - to_next[3] = bi3 = from[3]; - from += 4; - to_next += 4; - n_left_from -= 4; - n_left_to_next -= 4; - - b0 = vlib_get_buffer (vm, bi0); - b1 = vlib_get_buffer (vm, bi1); - b2 = vlib_get_buffer (vm, bi2); - b3 = vlib_get_buffer (vm, bi3); - - ip0 = vlib_buffer_get_current (b0); - ip1 = vlib_buffer_get_current (b1); - ip2 = vlib_buffer_get_current (b2); - ip3 = vlib_buffer_get_current (b3); - - ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE); - ip6_ext_header_find_t (ip1, prev1, sr1, IP_PROTOCOL_IPV6_ROUTE); - ip6_ext_header_find_t (ip2, prev2, sr2, IP_PROTOCOL_IPV6_ROUTE); - ip6_ext_header_find_t (ip3, prev3, sr3, IP_PROTOCOL_IPV6_ROUTE); - - ls0 = - pool_elt_at_index (sm->localsids, - vnet_buffer (b0)->ip.adj_index[VLIB_TX]); - ls1 = - pool_elt_at_index (sm->localsids, - vnet_buffer (b0)->ip.adj_index[VLIB_TX]); - ls2 = - pool_elt_at_index (sm->localsids, - vnet_buffer (b0)->ip.adj_index[VLIB_TX]); - ls3 = - pool_elt_at_index (sm->localsids, - vnet_buffer (b0)->ip.adj_index[VLIB_TX]); - - if (ls0->end_psp) - end_psp_srh_processing (node, b0, ip0, prev0, sr0, ls0, &next0); - else - end_srh_processing (node, b0, ip0, sr0, ls0, &next0); - - if (ls1->end_psp) - end_psp_srh_processing (node, b1, ip1, prev1, sr1, ls1, &next1); - else - end_srh_processing (node, b1, ip1, sr1, ls1, &next1); - - if (ls2->end_psp) - end_psp_srh_processing (node, b2, ip2, prev2, sr2, ls2, &next2); - else - end_srh_processing (node, b2, ip2, sr2, ls2, &next2); - - if (ls3->end_psp) - end_psp_srh_processing (node, b3, ip3, prev3, sr3, ls3, &next3); - else - end_srh_processing (node, b3, ip3, sr3, ls3, &next3); - - //TODO: proper trace. - - vlib_increment_combined_counter - (((next0 == - SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) : - &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids, - 1, vlib_buffer_length_in_chain (vm, b0)); - - vlib_increment_combined_counter - (((next1 == - SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) : - &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids, - 1, vlib_buffer_length_in_chain (vm, b1)); - - vlib_increment_combined_counter - (((next2 == - SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) : - &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids, - 1, vlib_buffer_length_in_chain (vm, b2)); - - vlib_increment_combined_counter - (((next3 == - SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) : - &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids, - 1, vlib_buffer_length_in_chain (vm, b3)); - - vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next, - n_left_to_next, bi0, bi1, bi2, bi3, - next0, next1, next2, next3); - } - - /* Single loop for potentially the last three packets */ - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 bi0; - vlib_buffer_t *b0; - ip6_header_t *ip0 = 0; - ip6_ext_header_t *prev0; - ip6_sr_header_t *sr0; - u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP; - ip6_sr_localsid_t *ls0; - - bi0 = from[0]; - to_next[0] = bi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, bi0); - ip0 = vlib_buffer_get_current (b0); - ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE); - - /* Lookup the SR End behavior based on IP DA (adj) */ - ls0 = - pool_elt_at_index (sm->localsids, - vnet_buffer (b0)->ip.adj_index[VLIB_TX]); - - /* SRH processing */ - if (ls0->end_psp) - end_psp_srh_processing (node, b0, ip0, prev0, sr0, ls0, &next0); - else - end_srh_processing (node, b0, ip0, sr0, ls0, &next0); - - if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) - { - sr_localsid_trace_t *tr = - vlib_add_trace (vm, node, b0, sizeof (*tr)); - tr->num_segments = 0; - tr->localsid_index = ls0 - sm->localsids; - - if (ip0 == vlib_buffer_get_current (b0)) - { - clib_memcpy (tr->src.as_u8, ip0->src_address.as_u8, - sizeof (tr->src.as_u8)); - clib_memcpy (tr->out_dst.as_u8, ip0->dst_address.as_u8, - sizeof (tr->out_dst.as_u8)); - if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE - && sr0->type == ROUTING_HEADER_TYPE_SR) - { - clib_memcpy (tr->sr, sr0->segments, sr0->length * 8); - tr->num_segments = - sr0->length * 8 / sizeof (ip6_address_t); - tr->segments_left = sr0->segments_left; - } - } - else - { - tr->num_segments = 0xFF; - } - } - - vlib_increment_combined_counter - (((next0 == - SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) : - &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids, - 1, vlib_buffer_length_in_chain (vm, b0)); - - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, - n_left_to_next, bi0, next0); - } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - return from_frame->n_vectors; -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (sr_localsid_node) = { - .function = sr_localsid_fn, - .name = "sr-localsid", - .vector_size = sizeof (u32), - .format_trace = format_sr_localsid_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - .n_errors = SR_LOCALSID_N_ERROR, - .error_strings = sr_localsid_error_strings, - .n_next_nodes = SR_LOCALSID_N_NEXT, - .next_nodes = { -#define _(s,n) [SR_LOCALSID_NEXT_##s] = n, - foreach_sr_localsid_next -#undef _ - }, -}; -/* *INDENT-ON* */ - -static u8 * -format_sr_dpo (u8 * s, va_list * args) -{ - index_t index = va_arg (*args, index_t); - CLIB_UNUSED (u32 indent) = va_arg (*args, u32); - - return (format (s, "SR: localsid_index:[%d]", index)); -} - -const static dpo_vft_t sr_loc_vft = { - .dv_lock = sr_dpo_lock, - .dv_unlock = sr_dpo_unlock, - .dv_format = format_sr_dpo, -}; - -const static char *const sr_loc_ip6_nodes[] = { - "sr-localsid", - NULL, -}; - -const static char *const *const sr_loc_nodes[DPO_PROTO_NUM] = { - [DPO_PROTO_IP6] = sr_loc_ip6_nodes, -}; - -const static char *const sr_loc_d_ip6_nodes[] = { - "sr-localsid-d", - NULL, -}; - -const static char *const *const sr_loc_d_nodes[DPO_PROTO_NUM] = { - [DPO_PROTO_IP6] = sr_loc_d_ip6_nodes, -}; - - -/*************************** SR LocalSID plugins ******************************/ -/** - * @brief SR LocalSID plugin registry - */ -int -sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name, - u8 * keyword_str, u8 * def_str, - u8 * params_str, dpo_type_t * dpo, - format_function_t * ls_format, - unformat_function_t * ls_unformat, - sr_plugin_callback_t * creation_fn, - sr_plugin_callback_t * removal_fn) -{ - ip6_sr_main_t *sm = &sr_main; - uword *p; - - sr_localsid_fn_registration_t *plugin; - - /* Did this function exist? If so update it */ - p = hash_get_mem (sm->plugin_functions_by_key, fn_name); - if (p) - { - plugin = pool_elt_at_index (sm->plugin_functions, p[0]); - } - /* Else create a new one and set hash key */ - else - { - pool_get (sm->plugin_functions, plugin); - hash_set_mem (sm->plugin_functions_by_key, fn_name, - plugin - sm->plugin_functions); - } - - memset (plugin, 0, sizeof (*plugin)); - - plugin->sr_localsid_function_number = (plugin - sm->plugin_functions); - plugin->sr_localsid_function_number += SR_BEHAVIOR_LAST; - plugin->ls_format = ls_format; - plugin->ls_unformat = ls_unformat; - plugin->creation = creation_fn; - plugin->removal = removal_fn; - clib_memcpy (&plugin->dpo, dpo, sizeof (dpo_type_t)); - plugin->function_name = format (0, "%s%c", fn_name, 0); - plugin->keyword_str = format (0, "%s%c", keyword_str, 0); - plugin->def_str = format (0, "%s%c", def_str, 0); - plugin->params_str = format (0, "%s%c", params_str, 0); - - return plugin->sr_localsid_function_number; -} - -/** - * @brief CLI function to 'show' all available SR LocalSID behaviors - */ -static clib_error_t * -show_sr_localsid_behaviors_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - ip6_sr_main_t *sm = &sr_main; - sr_localsid_fn_registration_t *plugin; - sr_localsid_fn_registration_t **plugins_vec = 0; - int i; - - vlib_cli_output (vm, - "SR LocalSIDs behaviors:\n-----------------------\n\n"); - - /* *INDENT-OFF* */ - pool_foreach (plugin, sm->plugin_functions, - ({ vec_add1 (plugins_vec, plugin); })); - /* *INDENT-ON* */ - - /* Print static behaviors */ - vlib_cli_output (vm, "Default behaviors:\n" - "\tEnd\t-> Endpoint.\n" - "\tEnd.X\t-> Endpoint with decapsulation and Layer-3 cross-connect.\n" - "\t\tParameters: '<iface> <ip6_next_hop>'\n" - "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n" - "\t\tParameters: '<iface>'\n" - "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n" - "\t\tParameters: '<iface> <ip6_next_hop>'\n" - "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n" - "\t\tParameters: '<iface> <ip4_next_hop>'\n" - "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n" - "\t\tParameters: '<ip6_fib_table>'\n" - "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n" - "\t\tParameters: '<ip4_fib_table>'\n"); - vlib_cli_output (vm, "Plugin behaviors:\n"); - for (i = 0; i < vec_len (plugins_vec); i++) - { - plugin = plugins_vec[i]; - vlib_cli_output (vm, "\t%s\t-> %s.\n", plugin->keyword_str, - plugin->def_str); - vlib_cli_output (vm, "\t\tParameters: '%s'\n", plugin->params_str); - } - return 0; -} - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (show_sr_localsid_behaviors_command, static) = { - .path = "show sr localsids behaviors", - .short_help = "show sr localsids behaviors", - .function = show_sr_localsid_behaviors_command_fn, -}; -/* *INDENT-ON* */ - -/** - * @brief SR LocalSID initialization - */ -clib_error_t * -sr_localsids_init (vlib_main_t * vm) -{ - /* Init memory for function keys */ - ip6_sr_main_t *sm = &sr_main; - mhash_init (&sm->sr_localsids_index_hash, sizeof (uword), - sizeof (ip6_address_t)); - /* Init SR behaviors DPO type */ - sr_localsid_dpo_type = dpo_register_new_type (&sr_loc_vft, sr_loc_nodes); - /* Init SR behaviors DPO type */ - sr_localsid_d_dpo_type = - dpo_register_new_type (&sr_loc_vft, sr_loc_d_nodes); - /* Init memory for localsid plugins */ - sm->plugin_functions_by_key = hash_create_string (0, sizeof (uword)); - return 0; -} - -VLIB_INIT_FUNCTION (sr_localsids_init); -/* -* fd.io coding-style-patch-verification: ON -* -* Local Variables: -* eval: (c-set-style "gnu") -* End: -*/ |