diff options
Diffstat (limited to 'plugins/ioam-plugin/ioam/export/ioam_export.h')
| -rw-r--r-- | plugins/ioam-plugin/ioam/export/ioam_export.h | 326 |
1 files changed, 0 insertions, 326 deletions
diff --git a/plugins/ioam-plugin/ioam/export/ioam_export.h b/plugins/ioam-plugin/ioam/export/ioam_export.h deleted file mode 100644 index f4a461f6bf3..00000000000 --- a/plugins/ioam-plugin/ioam/export/ioam_export.h +++ /dev/null @@ -1,326 +0,0 @@ -/* - * 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. - */ -#ifndef __included_ioam_export_h__ -#define __included_ioam_export_h__ - -#include <vnet/vnet.h> -#include <vnet/ip/ip.h> -#include <vnet/ip/ip_packet.h> -#include <vnet/ip/ip4_packet.h> -#include <vnet/ip/ip6_packet.h> -#include <vnet/ip/udp.h> -#include <vnet/flow/ipfix_packet.h> - -#include <vppinfra/pool.h> -#include <vppinfra/hash.h> -#include <vppinfra/error.h> -#include <vppinfra/elog.h> - -#include <vlib/threads.h> - -typedef struct ioam_export_buffer { - /* Allocated buffer */ - u32 buffer_index; - u64 touched_at; - u8 records_in_this_buffer; -} ioam_export_buffer_t; - - -typedef struct { - /* API message ID base */ - u16 msg_id_base; - - /* TODO: to support multiple collectors all this has to be grouped and create a vector here*/ - u8 *record_header; - u32 sequence_number; - u32 domain_id; - - /* ipfix collector, our ip address */ - ip4_address_t ipfix_collector; - ip4_address_t src_address; - - /* Pool of ioam_export_buffer_t */ - ioam_export_buffer_t *buffer_pool; - /* Vector of per thread ioam_export_buffer_t to buffer pool index */ - u32 *buffer_per_thread; - /* Lock per thread to swap buffers between worker and timer process*/ - volatile u32 **lockp; - - /* time scale transform*/ - u32 unix_time_0; - f64 vlib_time_0; - - /* convenience */ - vlib_main_t * vlib_main; - vnet_main_t * vnet_main; - ethernet_main_t * ethernet_main; - u32 ip4_lookup_node_index; - - uword my_hbh_slot; - u32 export_process_node_index; -} ioam_export_main_t; - -ioam_export_main_t ioam_export_main; - -vlib_node_registration_t export_node; - -#define DEFAULT_EXPORT_SIZE (3 * CLIB_CACHE_LINE_BYTES) -/* - * Number of records in a buffer - * ~(MTU (1500) - [ip hdr(40) + UDP(8) + ipfix (24)]) / DEFAULT_EXPORT_SIZE - */ -#define DEFAULT_EXPORT_RECORDS 7 - -always_inline ioam_export_buffer_t *ioam_export_get_my_buffer(u32 thread_id) -{ - ioam_export_main_t *em = &ioam_export_main; - - if (vec_len(em->buffer_per_thread) > thread_id) - return(pool_elt_at_index(em->buffer_pool, em->buffer_per_thread[thread_id])); - return(0); -} - -inline static int ioam_export_buffer_add_header (vlib_buffer_t *b0) -{ - ioam_export_main_t *em = &ioam_export_main; - clib_memcpy(b0->data, em->record_header, vec_len(em->record_header)); - b0->current_data = 0; - b0->current_length = vec_len(em->record_header); - b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID; - return(1); -} - -inline static int ioam_export_init_buffer (vlib_main_t *vm, - ioam_export_buffer_t *eb) -{ - vlib_buffer_t *b = 0; - - if (!eb) - return(-1); - /* TODO: Perhaps buffer init from template here */ - if (vlib_buffer_alloc (vm, &(eb->buffer_index), 1) != 1) - return(-2); - eb->records_in_this_buffer = 0; - eb->touched_at = vlib_time_now(vm); - b = vlib_get_buffer(vm, eb->buffer_index); - (void) ioam_export_buffer_add_header(b); - vnet_buffer(b)->sw_if_index[VLIB_RX] = 0; - vnet_buffer(b)->sw_if_index[VLIB_TX] = ~0; - return(1); -} - -inline static void ioam_export_thread_buffer_free (void) -{ - ioam_export_main_t *em = &ioam_export_main; - vlib_main_t *vm = em->vlib_main; - ioam_export_buffer_t *eb = 0; - int i; - for (i = 0; i < vec_len(em->buffer_per_thread); i++) - { - eb = pool_elt_at_index(em->buffer_pool, em->buffer_per_thread[i]); - if (eb) - vlib_buffer_free(vm, &(eb->buffer_index), 1); - } - for (i = 0; i < vec_len(em->lockp); i++) - clib_mem_free((void *) em->lockp[i]); - vec_free(em->buffer_per_thread); - pool_free(em->buffer_pool); - vec_free(em->lockp); - em->buffer_per_thread = 0; - em->buffer_pool = 0; - em->lockp = 0; -} - -inline static int ioam_export_thread_buffer_init (vlib_main_t *vm) -{ - ioam_export_main_t *em = &ioam_export_main; - int no_of_threads = vec_len(vlib_worker_threads); - int i; - ioam_export_buffer_t *eb = 0; - vlib_node_t * ip4_lookup_node; - - pool_alloc_aligned(em->buffer_pool, - no_of_threads - 1, - CLIB_CACHE_LINE_BYTES); - vec_validate_aligned(em->buffer_per_thread, - no_of_threads-1, - CLIB_CACHE_LINE_BYTES); - vec_validate_aligned(em->lockp, no_of_threads-1, - CLIB_CACHE_LINE_BYTES); - ip4_lookup_node = vlib_get_node_by_name (vm, (u8 *) "ip4-lookup"); - em->ip4_lookup_node_index = ip4_lookup_node->index; - if (!em->buffer_per_thread || !em->buffer_pool || !em->lockp) - { - return(-1); - } - for (i=0; i < no_of_threads; i++) - { - eb = 0; - pool_get_aligned(em->buffer_pool, eb, CLIB_CACHE_LINE_BYTES); - memset(eb, 0, sizeof (*eb)); - em->buffer_per_thread[i] = eb - em->buffer_pool; - if (ioam_export_init_buffer(vm, eb) != 1) - { - ioam_export_thread_buffer_free(); - return(-2); - } - em->lockp[i] = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES, - CLIB_CACHE_LINE_BYTES); - memset ((void *) em->lockp[i], 0, CLIB_CACHE_LINE_BYTES); - } - return(1); -} - -#define IPFIX_IOAM_EXPORT_ID 272 - -/* Used to build the rewrite */ -/* data set packet */ -typedef struct { - ipfix_message_header_t h; - ipfix_set_header_t s; -} ipfix_data_packet_t; - -typedef struct { - ip4_header_t ip4; - udp_header_t udp; - ipfix_data_packet_t ipfix; -} ip4_ipfix_data_packet_t; - - -inline static void ioam_export_header_cleanup (ip4_address_t * collector_address, - ip4_address_t * src_address) -{ - ioam_export_main_t *em = &ioam_export_main; - vec_free(em->record_header); - em->record_header = 0; -} - -inline static int ioam_export_header_create (ip4_address_t * collector_address, - ip4_address_t * src_address) -{ - ioam_export_main_t *em = &ioam_export_main; - ip4_header_t * ip; - udp_header_t * udp; - ipfix_message_header_t * h; - ipfix_set_header_t * s; - u8 * rewrite = 0; - ip4_ipfix_data_packet_t * tp; - - - /* allocate rewrite space */ - vec_validate_aligned (rewrite, - sizeof (ip4_ipfix_data_packet_t) - 1, - CLIB_CACHE_LINE_BYTES); - - tp = (ip4_ipfix_data_packet_t *) rewrite; - ip = (ip4_header_t *) &tp->ip4; - udp = (udp_header_t *) (ip+1); - h = (ipfix_message_header_t *)(udp+1); - s = (ipfix_set_header_t *)(h+1); - - ip->ip_version_and_header_length = 0x45; - ip->ttl = 254; - ip->protocol = IP_PROTOCOL_UDP; - ip->src_address.as_u32 = src_address->as_u32; - ip->dst_address.as_u32 = collector_address->as_u32; - udp->src_port = clib_host_to_net_u16 (4939 /* $$FIXME */); - udp->dst_port = clib_host_to_net_u16 (4939); - /* FIXUP: UDP length */ - udp->length = clib_host_to_net_u16 (vec_len(rewrite) + - (DEFAULT_EXPORT_RECORDS * DEFAULT_EXPORT_SIZE) - sizeof (*ip)); - - /* FIXUP: message header export_time */ - /* FIXUP: message header sequence_number */ - h->domain_id = clib_host_to_net_u32 (em->domain_id); - - /*FIXUP: Setid length in octets if records exported are not default*/ - s->set_id_length = ipfix_set_id_length (IPFIX_IOAM_EXPORT_ID, - (sizeof(*s) + (DEFAULT_EXPORT_RECORDS * DEFAULT_EXPORT_SIZE))); - - /* FIXUP: h version and length length in octets if records exported are not default */ - h->version_length = version_length (sizeof(*h)+ - (sizeof(*s) + (DEFAULT_EXPORT_RECORDS * DEFAULT_EXPORT_SIZE))); - - /* FIXUP: ip length if records exported are not default */ - /* FIXUP: ip checksum if records exported are not default */ - ip->length = clib_host_to_net_u16 (vec_len(rewrite) + - (DEFAULT_EXPORT_RECORDS * DEFAULT_EXPORT_SIZE)); - ip->checksum = ip4_header_checksum (ip); - _vec_len(rewrite) = sizeof(ip4_ipfix_data_packet_t); - em->record_header = rewrite; - return(1); -} - -inline static int ioam_export_send_buffer (vlib_main_t *vm, - ioam_export_buffer_t *eb) -{ - ioam_export_main_t *em = &ioam_export_main; - ip4_header_t * ip; - udp_header_t * udp; - ipfix_message_header_t * h; - ipfix_set_header_t * s; - ip4_ipfix_data_packet_t * tp; - vlib_buffer_t *b0; - u16 new_l0, old_l0; - ip_csum_t sum0; - vlib_frame_t * nf = 0; - u32 * to_next; - - b0 = vlib_get_buffer(vm, eb->buffer_index); - tp = vlib_buffer_get_current (b0); - ip = (ip4_header_t *) &tp->ip4; - udp = (udp_header_t *) (ip+1); - h = (ipfix_message_header_t *)(udp+1); - s = (ipfix_set_header_t *)(h+1); - - /* FIXUP: message header export_time */ - h->export_time = clib_host_to_net_u32((u32) - (((f64)em->unix_time_0) + - (vlib_time_now(em->vlib_main) - em->vlib_time_0))); - - /* FIXUP: message header sequence_number */ - h->sequence_number = clib_host_to_net_u32 (em->sequence_number++); - - /* FIXUP: lengths if different from default */ - if (PREDICT_FALSE(eb->records_in_this_buffer != DEFAULT_EXPORT_RECORDS)) { - s->set_id_length = ipfix_set_id_length (IPFIX_IOAM_EXPORT_ID /* set_id */, - b0->current_length - - (sizeof (*ip) + sizeof (*udp) + - sizeof (*h))); - h->version_length = version_length (b0->current_length - - (sizeof (*ip) + sizeof (*udp))); - sum0 = ip->checksum; - old_l0 = ip->length; - new_l0 = clib_host_to_net_u16 ((u16)b0->current_length); - sum0 = ip_csum_update (sum0, old_l0, new_l0, ip4_header_t, - length /* changed member */); - ip->checksum = ip_csum_fold (sum0); - ip->length = new_l0; - udp->length = clib_host_to_net_u16 (b0->current_length - sizeof (*ip)); - } - - /* Enqueue pkts to ip4-lookup */ - - nf = vlib_get_frame_to_node (vm, em->ip4_lookup_node_index); - nf->n_vectors = 0; - to_next = vlib_frame_vector_args (nf); - nf->n_vectors = 1; - to_next[0] = eb->buffer_index; - vlib_put_frame_to_node(vm, em->ip4_lookup_node_index, nf); - return(1); - -} - -#endif /* __included_ioam_export_h__ */ |