session tcp: infra for transports to send buffers - vpp

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author	Florin Coras <fcoras@cisco.com>	2019-10-16 22:06:08 -0700
committer	Dave Barach <openvpp@barachs.net>	2019-10-17 19:39:07 +0000
commit	2a7ea2ee92d6dc4800ee21323d3324a9e8449dcf (patch)
tree	7168893de8f4ac1e3cfdacd274151e05a157489e /src/vppinfra/tw_timer_template.h
parent	3030beae9468ab677c86cb1f9188438072307308 (diff)

session tcp: infra for transports to send buffers

Type: feature Add infra that allows transpors to enqueue pending buffers without the need to build and manage their own pending frames. An important benefit is the fact that buffer wire/tx ordering is ensured by session layer. Change-Id: I764fd1693d610b321a1d0c84b648a314f14583db Signed-off-by: Florin Coras <fcoras@cisco.com>

Diffstat (limited to 'src/vppinfra/tw_timer_template.h')

0 files changed, 0 insertions, 0 deletions

/* * 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/mpls/mpls_types.h> #include <vnet/dpo/drop_dpo.h> #include <vnet/fib/fib_table.h> #include <vnet/fib/fib_entry.h> #include <vnet/fib/fib_entry_src.h> #include <vnet/fib/mpls_fib.h> /** * Source initialisation Function */ static void fib_entry_src_mpls_init (fib_entry_src_t *src) { mpls_eos_bit_t eos; src->fes_flags = FIB_ENTRY_SRC_FLAG_NONE; src->mpls.fesm_label = MPLS_LABEL_INVALID; FOR_EACH_MPLS_EOS_BIT(eos) { src->mpls.fesm_lfes[eos] = FIB_NODE_INDEX_INVALID; } } /** * Source deinitialisation Function */ static void fib_entry_src_mpls_deinit (fib_entry_src_t *src) { } static void fib_entry_src_mpls_remove (fib_entry_src_t *src) { src->fes_pl = FIB_NODE_INDEX_INVALID; src->mpls.fesm_label = MPLS_LABEL_INVALID; } static void fib_entry_src_mpls_add (fib_entry_src_t *src, const fib_entry_t *entry, fib_entry_flag_t flags, fib_protocol_t proto, const dpo_id_t *dpo) { src->fes_pl = fib_path_list_create_special(proto, FIB_PATH_LIST_FLAG_DROP, drop_dpo_get(fib_proto_to_dpo(proto))); } static void fib_entry_src_mpls_set_data (fib_entry_src_t *src, const fib_entry_t *entry, const void *data) { fib_protocol_t payload_proto; fib_node_index_t fei; mpls_label_t label; mpls_eos_bit_t eos; /* * post MPLS table alloc and the possible rea-alloc of fib entrys * the entry pointer will no longer be valid. so save its index */ payload_proto = entry->fe_prefix.fp_proto; fei = fib_entry_get_index(entry); label = *(mpls_label_t*)data; if (MPLS_LABEL_INVALID == label) { /* * removing the local label */ FOR_EACH_MPLS_EOS_BIT(eos) { fib_table_entry_delete_index(src->mpls.fesm_lfes[eos], FIB_SOURCE_SPECIAL); } fib_table_unlock(MPLS_FIB_DEFAULT_TABLE_ID, FIB_PROTOCOL_MPLS); src->mpls.fesm_label = label; } else { fib_prefix_t prefix = { .fp_proto = FIB_PROTOCOL_MPLS, .fp_label = label, }; fib_node_index_t fib_index; dpo_id_t dpo = DPO_INVALID; /* * adding a new local label. make sure the MPLS fib exists. */ if (MPLS_LABEL_INVALID == src->mpls.fesm_label) { fib_index = fib_table_find_or_create_and_lock(FIB_PROTOCOL_MPLS, MPLS_FIB_DEFAULT_TABLE_ID); } else { fib_index = mpls_fib_index_from_table_id(MPLS_FIB_DEFAULT_TABLE_ID); /* * if this is a change in label, reomve the old one first */ if (src->mpls.fesm_label != label) { FOR_EACH_MPLS_EOS_BIT(eos) { ASSERT(FIB_NODE_INDEX_INVALID != src->mpls.fesm_lfes[eos]); fib_table_entry_delete_index(src->mpls.fesm_lfes[eos], FIB_SOURCE_SPECIAL); } } } src->mpls.fesm_label = label; FOR_EACH_MPLS_EOS_BIT(eos) { prefix.fp_eos = eos; prefix.fp_payload_proto = fib_proto_to_dpo(payload_proto); fib_entry_contribute_forwarding(fei, (eos ? FIB_FORW_CHAIN_TYPE_MPLS_EOS : FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS), &dpo); src->mpls.fesm_lfes[eos] = fib_table_entry_special_dpo_add(fib_index, &prefix, FIB_SOURCE_SPECIAL, FIB_ENTRY_FLAG_EXCLUSIVE, &dpo); dpo_reset(&dpo); } } } static const void * fib_entry_src_mpls_get_data (fib_entry_src_t *src, const fib_entry_t *entry) { return (&(src->mpls.fesm_label)); } static u8* fib_entry_src_mpls_format (fib_entry_src_t *src, u8* s) { return (format(s, "MPLS local-label:%d", src->mpls.fesm_label)); } const static fib_entry_src_vft_t mpls_src_vft = { .fesv_init = fib_entry_src_mpls_init, .fesv_deinit = fib_entry_src_mpls_deinit, .fesv_add = fib_entry_src_mpls_add, .fesv_remove = fib_entry_src_mpls_remove, .fesv_format = fib_entry_src_mpls_format, .fesv_set_data = fib_entry_src_mpls_set_data, .fesv_get_data = fib_entry_src_mpls_get_data, /* * .fesv_fwd_update = fib_entry_src_mpls_fwd_update, * When the forwarding for the IP entry is updated, any MPLS chains * it has created are also updated. Since the MPLS entry will have already * installed that chain/load-balance there is no need to update the netry * FIXME: later: propagate any walk to the children of the MPLS entry. for SR */ }; void fib_entry_src_mpls_register (void) { fib_entry_src_register(FIB_SOURCE_MPLS, &mpls_src_vft); }


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