diff options
Diffstat (limited to 'hicn-plugin/src/faces/app/face_prod.c')
| -rwxr-xr-x | hicn-plugin/src/faces/app/face_prod.c | 375 |
1 files changed, 375 insertions, 0 deletions
diff --git a/hicn-plugin/src/faces/app/face_prod.c b/hicn-plugin/src/faces/app/face_prod.c new file mode 100755 index 000000000..d06fe2ff3 --- /dev/null +++ b/hicn-plugin/src/faces/app/face_prod.c @@ -0,0 +1,375 @@ +/* + * Copyright (c) 2017-2019 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/ip/ip6_packet.h> +#include <vlib/vlib.h> +#include <vnet/vnet.h> + +#include "face_prod.h" +#include "address_mgr.h" +#include "../../infra.h" +#include "../../route.h" +#include "../../cache_policies/cs_lru.h" + +hicn_face_prod_state_t *face_state_vec; + +/* used to check if an interface is already in the vector */ +u32 *face_state_pool; + +static int +hicn_app_state_create (u32 swif, hicn_prefix_t * prefix) +{ + /* Make sure that the pool is not empty */ + pool_validate_index (face_state_pool, 0); + + u32 *swif_app; + u8 found = 0; + /* *INDENT-OFF* */ + pool_foreach (swif_app, face_state_pool,{ + if (*swif_app == swif) + { + found = 1; + } + } + ); + /* *INDENT-ON* */ + + + if (found) + return HICN_ERROR_APPFACE_ALREADY_ENABLED; + + + /* Create the appif and store in the vector */ + vec_validate (face_state_vec, swif); + clib_memcpy (&(face_state_vec[swif].prefix), prefix, + sizeof (hicn_prefix_t)); + + /* Set as busy the element in the vector */ + pool_get (face_state_pool, swif_app); + *swif_app = swif; + + int ret = HICN_ERROR_NONE; + if (ip46_address_is_ip4 (&(prefix->name))) + { + ret = + vnet_feature_enable_disable ("ip4-unicast", "hicn-face-prod-input", + swif, 1, 0, 0); + } + else + { + ret = + vnet_feature_enable_disable ("ip6-unicast", "hicn-face-prod-input", + swif, 1, 0, 0); + } + + return ret == 0 ? HICN_ERROR_NONE : HICN_ERROR_APPFACE_FEATURE; +} + +static int +hicn_app_state_del (u32 swif) +{ + /* Make sure that the pool is not empty */ + pool_validate_index (face_state_pool, 0); + + u32 *temp; + u32 *swif_app = NULL; + u8 found = 0; + ip46_address_t *prefix_addr; + /* *INDENT-OFF* */ + pool_foreach (temp, face_state_pool,{ + if (*temp == swif) + { + found = 1; + swif_app = temp; + } + } + ); + /* *INDENT-ON* */ + + prefix_addr = &(face_state_vec[swif].prefix.name); + if (!found) + return HICN_ERROR_APPFACE_NOT_FOUND; + + int ret = HICN_ERROR_NONE; + if (ip46_address_is_ip4 (prefix_addr)) + { + ret = + vnet_feature_enable_disable ("ip4-unicast", "hicn-face-prod-input", + swif, 0, 0, 0); + } + else + { + ret = + vnet_feature_enable_disable ("ip6-unicast", "hicn-face-prod-input", + swif, 0, 0, 0); + } + + pool_put (face_state_pool, swif_app); + memset (&face_state_vec[swif], 0, sizeof (hicn_face_prod_state_t)); + + return ret == 0 ? HICN_ERROR_NONE : HICN_ERROR_APPFACE_FEATURE; +} + +int +hicn_face_prod_add (hicn_prefix_t * prefix, u32 sw_if, u32 * cs_reserved, + ip46_address_t * prod_addr, hicn_face_id_t * faceid) +{ + vlib_main_t *vm = vlib_get_main (); + vnet_main_t *vnm = vnet_get_main (); + + hicn_main_t *hm = &hicn_main; + + ip46_address_t app_ip; + u32 if_flags = 0; + + if (!hm->is_enabled) + { + return HICN_ERROR_FWD_NOT_ENABLED; + } + int ret = HICN_ERROR_NONE; + hicn_face_t *face = NULL; + + if_flags |= VNET_SW_INTERFACE_FLAG_ADMIN_UP; + vnet_sw_interface_set_flags (vnm, sw_if, if_flags); + + if (ip46_address_is_zero (&prefix->name)) + { + return HICN_ERROR_APPFACE_PROD_PREFIX_NULL; + } + /* + * Check if a producer face is already existing for the same prefix + * and sw_if + */ + if (ip46_address_is_ip4 (&prefix->name)) + { + face = + hicn_face_ip4_get (&(prefix->name.ip4), sw_if, + &hicn_face_ip_remote_hashtb); + } + else + { + face = + hicn_face_ip6_get (&(prefix->name.ip6), sw_if, + &hicn_face_ip_remote_hashtb); + if (face != NULL) + return HICN_ERROR_FACE_ALREADY_CREATED; + } + + if (face != NULL) + { + if (!(face->shared.flags & HICN_FACE_FLAGS_DELETED)) + return HICN_ERROR_FACE_ALREADY_CREATED; + + /* + * Something went worng, a consumer face exists for the + * producer's prefix. + */ + /* It should never happens, this is a safety check. */ + if (face->shared.flags & HICN_FACE_FLAGS_APPFACE_CONS) + return HICN_ERROR_FACE_ALREADY_CREATED; + + /* If the face exists but is marked as deleted, undelete it */ + if (face->shared.flags & HICN_FACE_FLAGS_DELETED) + { + /* + * remove the deleted flag and retrieve the face + * local addr + */ + face->shared.flags &= HICN_FACE_FLAGS_DELETED; + hicn_face_prod_t *prod_face = (hicn_face_prod_t *) face->data; + app_ip = prod_face->ip_face.local_addr; + } + } + else + { + /* Otherwise create the face */ + if (ip46_address_is_ip4 (&prefix->name)) + { + /* + * Otherwise retrieve an ip address to assign as a + * local ip addr. + */ + ip4_address_t app_ip4 = get_ip4_address (); + ip4_add_del_interface_address (vm, + sw_if, + &app_ip4, + ADDR_MGR_IP4_CONS_LEN, + 0 /* is_del */ ); + app_ip = to_ip46 ( /* isv6 */ 0, app_ip4.as_u8); + } + else + { + ip6_address_t app_ip6 = get_ip6_address (); + ip6_add_del_interface_address (vm, + sw_if, + &app_ip6, + ADDR_MGR_IP6_CONS_LEN, + 0 /* is_del */ ); + app_ip = to_ip46 ( /* isv6 */ 1, app_ip6.as_u8); + } + + /* + * Special case: the nh_addr in the face is the appif ip + * address + */ + ret = hicn_face_ip_add (&app_ip, &(prefix->name), sw_if, faceid); + + face = hicn_dpoi_get_from_idx (*faceid); + + face->shared.flags |= HICN_FACE_FLAGS_APPFACE_PROD; + + hicn_face_prod_t *prod_face = (hicn_face_prod_t *) face->data; + + /* + * For the moment we keep them here although it would be good + * to create a different face for appface + */ + prod_face->policy_vft.hicn_cs_insert = hicn_cs_lru.hicn_cs_insert; + prod_face->policy_vft.hicn_cs_update = hicn_cs_lru.hicn_cs_update; + prod_face->policy_vft.hicn_cs_dequeue = hicn_cs_lru.hicn_cs_dequeue; + prod_face->policy_vft.hicn_cs_delete_get = + hicn_cs_lru.hicn_cs_delete_get; + prod_face->policy_vft.hicn_cs_trim = hicn_cs_lru.hicn_cs_trim; + + } + + if (ret == HICN_ERROR_NONE + && hicn_face_prod_set_lru_max (*faceid, cs_reserved) == HICN_ERROR_NONE) + { + hicn_app_state_create (sw_if, prefix); + ret = hicn_route_add (faceid, 1, &(prefix->name), prefix->len); + } + + *prod_addr = app_ip; + + /* Cleanup in case of something went wrong. */ + if (ret) + { + hicn_app_state_del (sw_if); + + if (*faceid != HICN_FACE_NULL) + hicn_face_ip_del (*faceid); + } + return ret; +} + +int +hicn_face_prod_del (hicn_face_id_t face_id) +{ + hicn_face_t *face = hicn_dpoi_get_from_idx (face_id); + + if (face->shared.flags & HICN_FACE_FLAGS_APPFACE_PROD) + { + hicn_face_prod_t *prod_face = (hicn_face_prod_t *) face->data; + /* Free the CS reserved for the face */ + hicn_main.pitcs.pcs_app_max += prod_face->policy.max; + hicn_main.pitcs.pcs_app_count -= prod_face->policy.max; + prod_face->policy.max = 0; + + /* Remove the face from the fib */ + hicn_route_del_nhop (&(face_state_vec[face->shared.sw_if].prefix.name), + (face_state_vec[face->shared.sw_if].prefix.len), + face_id); + + int ret = hicn_face_ip_del (face_id); + return ret == + HICN_ERROR_NONE ? hicn_app_state_del (face->shared.sw_if) : ret; + } + else + { + return HICN_ERROR_APPFACE_NOT_FOUND; + } +} + +int +hicn_face_prod_set_lru_max (hicn_face_id_t face_id, u32 * requested_size) +{ + int ret = HICN_ERROR_NONE; + vlib_main_t *vm = vlib_get_main (); + hicn_face_t *face; + hicn_face_prod_t *face_prod; + + if (!hicn_infra_fwdr_initialized) + { + ret = HICN_ERROR_FWD_NOT_ENABLED; + vlib_cli_output (vm, "hicn: %s\n", get_error_string (ret)); + return ret; + } + face = hicn_dpoi_get_from_idx (face_id); + face_prod = (hicn_face_prod_t *) face->data; + + if (face == NULL) + return HICN_ERROR_FACE_NOT_FOUND; + + if (*requested_size > HICN_PARAM_FACE_MAX_CS_RESERVED) + *requested_size = HICN_PARAM_FACE_MAX_CS_RESERVED; + + uint32_t available = + hicn_main.pitcs.pcs_app_max - hicn_main.pitcs.pcs_app_count; + + if (*requested_size > available) + *requested_size = available; + + face_prod->policy.max = *requested_size; + face_prod->policy.count = 0; + face_prod->policy.head = face_prod->policy.tail = 0; + + hicn_main.pitcs.pcs_app_count += *requested_size; + + return ret; +} + +u8 * +format_hicn_face_prod (u8 * s, va_list * args) +{ + index_t index = va_arg (*args, index_t); + CLIB_UNUSED (u32 indent) = va_arg (*args, u32); + hicn_face_t *face; + hicn_face_prod_t *prod_face; + + face = hicn_dpoi_get_from_idx (index); + prod_face = (hicn_face_prod_t *) face->data; + + s = + format (s, " (producer face: CS size %d, data cached %d)", + prod_face->policy.max, prod_face->policy.count); + + return s; +} + +/* *INDENT-OFF* */ +VNET_FEATURE_INIT(hicn_prod_app_input_ip6, static)= +{ + .arc_name = "ip6-unicast", + .node_name = "hicn-face-prod-input", + .runs_before = VNET_FEATURES("ip6-inacl"), +}; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +VNET_FEATURE_INIT(hicn_prod_app_input_ip4, static)= +{ + .arc_name = "ip4-unicast", + .node_name = "hicn-face-prod-input", + .runs_before = VNET_FEATURES("ip4-inacl"), +}; +/* *INDENT-ON* */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: eval: (c-set-style "gnu") End: + */ |