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authorVengada Govindan <venggovi@cisco.com>2016-10-12 05:54:09 -0700
committerVengada Govindan <venggovi@cisco.com>2016-12-09 06:15:02 +0000
commit6d403a013276f095e542c9b6281db96354fa6f07 (patch)
tree3954b21a8fe2bb789d42f6f6234344d39c4e1e4d /plugins/ioam-plugin/ioam/export/ioam_export.h
parentc9b20bc7a5399fd1e7bf2d33e7c4f1f08ef1c1e4 (diff)
VPP-470: Introduce VxLAN-GPE as transport for iOAM.
See Jira ticket for more details - New plugins created to (a) Add VxLAN-GPE as transport (b) Provide export infra for VxLAN-GPE. Change-Id: Ife50c7434f53d17a4783062310f73d063d53494c Signed-off-by: Vengada Govindan <venggovi@cisco.com>
Diffstat (limited to 'plugins/ioam-plugin/ioam/export/ioam_export.h')
-rw-r--r--plugins/ioam-plugin/ioam/export/ioam_export.h326
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__ */