/* *------------------------------------------------------------------ * sr_api.c - ipv6 segment routing api * * 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. *------------------------------------------------------------------ */ #include <vnet/vnet.h> #include <vnet/srv6/sr.h> #include <vlibmemory/api.h> #include <vnet/interface.h> #include <vnet/api_errno.h> #include <vnet/feature/feature.h> #include <vnet/vnet_msg_enum.h> #define vl_typedefs /* define message structures */ #include <vnet/vnet_all_api_h.h> #undef vl_typedefs #define vl_endianfun /* define message structures */ #include <vnet/vnet_all_api_h.h> #undef vl_endianfun /* instantiate all the print functions we know about */ #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) #define vl_printfun #include <vnet/vnet_all_api_h.h> #undef vl_printfun #include <vlibapi/api_helper_macros.h> #define foreach_vpe_api_msg \ _(SR_LOCALSID_ADD_DEL, sr_localsid_add_del) \ _(SR_POLICY_ADD, sr_policy_add) \ _(SR_POLICY_MOD, sr_policy_mod) \ _(SR_POLICY_DEL, sr_policy_del) \ _(SR_STEERING_ADD_DEL, sr_steering_add_del) \ _(SR_SET_ENCAP_SOURCE, sr_set_encap_source) \ _(SR_LOCALSIDS_DUMP, sr_localsids_dump) \ _(SR_POLICIES_DUMP, sr_policies_dump) \ _(SR_STEERING_POL_DUMP, sr_steering_pol_dump) static void vl_api_sr_localsid_add_del_t_handler (vl_api_sr_localsid_add_del_t * mp) { vl_api_sr_localsid_add_del_reply_t *rmp; int rv = 0; /* * 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) */ if (mp->behavior == SR_BEHAVIOR_X || mp->behavior == SR_BEHAVIOR_DX6 || mp->behavior == SR_BEHAVIOR_DX4 || mp->behavior == SR_BEHAVIOR_DX2) VALIDATE_SW_IF_INDEX (mp); ip46_address_t prefix; clib_memset (&prefix, 0, sizeof (ip46_address_t)); if ((mp->nh_addr4[0] | mp->nh_addr4[1] | mp-> nh_addr4[2] | mp->nh_addr4[3]) != 0) memcpy (&prefix.ip4, mp->nh_addr4, sizeof (prefix.ip4)); else memcpy (&prefix.ip6, mp->nh_addr6, sizeof (prefix.ip6)); rv = sr_cli_localsid (mp->is_del, (ip6_address_t *) & mp->localsid, mp->end_psp, mp->behavior, ntohl (mp->sw_if_index), ntohl (mp->vlan_index), ntohl (mp->fib_table), &prefix, NULL); BAD_SW_IF_INDEX_LABEL; REPLY_MACRO (VL_API_SR_LOCALSID_ADD_DEL_REPLY); } static void vl_api_sr_policy_add_t_handler (vl_api_sr_policy_add_t * mp) { vl_api_sr_policy_add_reply_t *rmp; ip6_address_t *segments = 0, *seg; ip6_address_t *this_address = (ip6_address_t *) mp->sids.sids; int i; for (i = 0; i < mp->sids.num_sids; i++) { vec_add2 (segments, seg, 1); clib_memcpy (seg->as_u8, this_address->as_u8, sizeof (*this_address)); this_address++; } /* * sr_policy_add (ip6_address_t *bsid, ip6_address_t *segments, * u32 weight, u8 behavior, u32 fib_table, u8 is_encap) */ int rv = 0; rv = sr_policy_add ((ip6_address_t *) & mp->bsid_addr, segments, ntohl (mp->sids.weight), mp->type, ntohl (mp->fib_table), mp->is_encap); vec_free (segments); REPLY_MACRO (VL_API_SR_POLICY_ADD_REPLY); } static void vl_api_sr_policy_mod_t_handler (vl_api_sr_policy_mod_t * mp) { vl_api_sr_policy_mod_reply_t *rmp; ip6_address_t *segments = 0, *seg; ip6_address_t *this_address = (ip6_address_t *) mp->sids.sids; int i; for (i = 0; i < mp->sids.num_sids; i++) { vec_add2 (segments, seg, 1); clib_memcpy (seg->as_u8, this_address->as_u8, sizeof (*this_address)); this_address++; } int rv = 0; /* * int * sr_policy_mod(ip6_address_t *bsid, u32 index, u32 fib_table, * u8 operation, ip6_address_t *segments, u32 sl_index, * u32 weight, u8 is_encap) */ rv = sr_policy_mod ((ip6_address_t *) & mp->bsid_addr, ntohl (mp->sr_policy_index), ntohl (mp->fib_table), mp->operation, segments, ntohl (mp->sl_index), ntohl (mp->sids.weight)); vec_free (segments); REPLY_MACRO (VL_API_SR_POLICY_MOD_REPLY); } static void vl_api_sr_policy_del_t_handler (vl_api_sr_policy_del_t * mp) { vl_api_sr_policy_del_reply_t *rmp; int rv = 0; /* * int * sr_policy_del (ip6_address_t *bsid, u32 index) */ rv = sr_policy_del ((ip6_address_t *) & mp->bsid_addr, ntohl (mp->sr_policy_index)); REPLY_MACRO (VL_API_SR_POLICY_DEL_REPLY); } static void vl_api_sr_set_encap_source_t_handler (vl_api_sr_set_encap_source_t * mp) { vl_api_sr_set_encap_source_reply_t *rmp; int rv = 0; sr_set_source ((ip6_address_t *) & mp->encaps_source); REPLY_MACRO (VL_API_SR_POLICY_DEL_REPLY); } static void vl_api_sr_steering_add_del_t_handler (vl_api_sr_steering_add_del_t * mp) { vl_api_sr_steering_add_del_reply_t *rmp; int rv = 0; /* * int * sr_steering_policy(int is_del, ip6_address_t *bsid, u32 sr_policy_index, * u32 table_id, ip46_address_t *prefix, u32 mask_width, u32 sw_if_index, * u8 traffic_type) */ if (mp->traffic_type == SR_STEER_L2) VALIDATE_SW_IF_INDEX (mp); rv = sr_steering_policy (mp->is_del, (ip6_address_t *) & mp->bsid_addr, ntohl (mp->sr_policy_index), ntohl (mp->table_id), (ip46_address_t *) & mp->prefix_addr, ntohl (mp->mask_width), ntohl (mp->sw_if_index), mp->traffic_type); BAD_SW_IF_INDEX_LABEL; REPLY_MACRO (VL_API_SR_STEERING_ADD_DEL_REPLY); } static void send_sr_localsid_details (ip6_sr_localsid_t * t, vl_api_registration_t * reg, u32 context) { vl_api_sr_localsids_details_t *rmp; rmp = vl_msg_api_alloc (sizeof (*rmp)); clib_memset (rmp, 0, sizeof (*rmp)); rmp->_vl_msg_id = ntohs (VL_API_SR_LOCALSIDS_DETAILS); clib_memcpy (rmp->addr.addr, &t->localsid, sizeof (ip6_address_t)); rmp->end_psp = t->end_psp; rmp->behavior = htons (t->behavior); rmp->fib_table = htonl (t->fib_table); rmp->vlan_index = htonl (t->vlan_index); if (ip46_address_is_ip4 (&t->next_hop)) clib_memcpy (rmp->xconnect_nh_addr4, &t->next_hop.ip4, sizeof (ip4_address_t)); else clib_memcpy (rmp->xconnect_nh_addr6, &t->next_hop.ip6, sizeof (ip6_address_t)); rmp->xconnect_iface_or_vrf_table = htonl (t->sw_if_index); rmp->context = context; vl_api_send_msg (reg, (u8 *) rmp); } static void vl_api_sr_localsids_dump_t_handler (vl_api_sr_localsids_dump_t * mp) { vl_api_registration_t *reg; ip6_sr_main_t *sm = &sr_main; ip6_sr_localsid_t *t; reg = vl_api_client_index_to_registration (mp->client_index); if (!reg) return; /* *INDENT-OFF* */ pool_foreach (t, sm->localsids, ({ send_sr_localsid_details(t, reg, mp->context); })); /* *INDENT-ON* */ } static void send_sr_policies_details (ip6_sr_policy_t * t, vl_api_registration_t * reg, u32 context) { vl_api_sr_policies_details_t *rmp; ip6_sr_main_t *sm = &sr_main; u32 *sl_index; ip6_sr_sl_t *segment_list = 0; vl_api_srv6_sid_list_t *write_sid_list; rmp = vl_msg_api_alloc (sizeof (*rmp) + vec_len (t->segments_lists) * sizeof (vl_api_srv6_sid_list_t)); clib_memset (rmp, 0, (sizeof (*rmp) + vec_len (t->segments_lists) * sizeof (vl_api_srv6_sid_list_t))); rmp->_vl_msg_id = ntohs (VL_API_SR_POLICIES_DETAILS); clib_memcpy (rmp->bsid.addr, &t->bsid, sizeof (ip6_address_t)); rmp->is_encap = t->is_encap; rmp->type = t->type; rmp->fib_table = htonl (t->fib_table); rmp->num_sid_lists = vec_len (t->segments_lists); /* Fill in all the segments lists */ vec_foreach (sl_index, t->segments_lists) { segment_list = pool_elt_at_index (sm->sid_lists, *sl_index); write_sid_list = &rmp->sid_lists[sl_index - t->segments_lists]; write_sid_list->num_sids = vec_len (segment_list->segments); write_sid_list->weight = htonl (segment_list->weight); clib_memcpy (write_sid_list->sids, segment_list->segments, vec_len (segment_list->segments) * sizeof (ip6_address_t)); } rmp->context = context; vl_api_send_msg (reg, (u8 *) rmp); } static void vl_api_sr_policies_dump_t_handler (vl_api_sr_policies_dump_t * mp) { vl_api_registration_t *reg; ip6_sr_main_t *sm = &sr_main; ip6_sr_policy_t *t; reg = vl_api_client_index_to_registration (mp->client_index); if (!reg) return; /* *INDENT-OFF* */ pool_foreach (t, sm->sr_policies, ({ send_sr_policies_details(t, reg, mp->context); })); /* *INDENT-ON* */ } static void send_sr_steering_pol_details (ip6_sr_steering_policy_t * t, vl_api_registration_t * reg, u32 context) { vl_api_sr_steering_pol_details_t *rmp; ip6_sr_main_t *sm = &sr_main; rmp = vl_msg_api_alloc (sizeof (*rmp)); clib_memset (rmp, 0, sizeof (*rmp)); rmp->_vl_msg_id = ntohs (VL_API_SR_STEERING_POL_DETAILS); //Get the SR policy BSID ip6_sr_policy_t *p; p = pool_elt_at_index (sm->sr_policies, t->sr_policy); clib_memcpy (rmp->bsid.addr, &p->bsid, sizeof (ip6_address_t)); //Get the steering rmp->traffic_type = t->classify.traffic_type; rmp->fib_table = htonl (t->classify.l3.fib_table); rmp->mask_width = htonl (t->classify.l3.mask_width); if (ip46_address_is_ip4 (&t->classify.l3.prefix)) clib_memcpy (rmp->prefix_addr, &t->classify.l3.prefix.ip4, sizeof (ip4_address_t)); else clib_memcpy (rmp->prefix_addr, &t->classify.l3.prefix.ip6, sizeof (ip6_address_t)); rmp->sw_if_index = htonl (t->classify.l2.sw_if_index); rmp->context = context; vl_api_send_msg (reg, (u8 *) rmp); } static void vl_api_sr_steering_pol_dump_t_handler (vl_api_sr_policies_dump_t * mp) { vl_api_registration_t *reg; ip6_sr_main_t *sm = &sr_main; ip6_sr_steering_policy_t *t; reg = vl_api_client_index_to_registration (mp->client_index); if (!reg) return; /* *INDENT-OFF* */ pool_foreach (t, sm->steer_policies, ({ send_sr_steering_pol_details(t, reg, mp->context); })); /* *INDENT-ON* */ } /* * sr_api_hookup * Add vpe's API message handlers to the table. * vlib has alread mapped shared memory and * added the client registration handlers. * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process() */ #define vl_msg_name_crc_list #include <vnet/vnet_all_api_h.h> #undef vl_msg_name_crc_list static void setup_message_id_table (api_main_t * am) { #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id); foreach_vl_msg_name_crc_sr; #undef _ } static clib_error_t * sr_api_hookup (vlib_main_t * vm) { api_main_t *am = &api_main; #define _(N,n) \ vl_msg_api_set_handlers(VL_API_##N, #n, \ vl_api_##n##_t_handler, \ vl_noop_handler, \ vl_api_##n##_t_endian, \ vl_api_##n##_t_print, \ sizeof(vl_api_##n##_t), 1); foreach_vpe_api_msg; #undef _ /* * Set up the (msg_name, crc, message-id) table */ setup_message_id_table (am); return 0; } VLIB_API_INIT_FUNCTION (sr_api_hookup); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */