From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 8538CA00BE; Fri, 1 Nov 2019 16:22:03 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id AE8AF1C113; Fri, 1 Nov 2019 16:21:54 +0100 (CET) Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id C67001BEAA for ; Fri, 1 Nov 2019 16:21:52 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Nov 2019 08:21:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,256,1569308400"; d="scan'208";a="351979064" Received: from silpixa00400072.ir.intel.com ([10.237.222.213]) by orsmga004.jf.intel.com with ESMTP; 01 Nov 2019 08:21:50 -0700 From: Vladimir Medvedkin To: dev@dpdk.org Cc: bruce.richardson@intel.com, konstantin.ananyev@intel.com, thomas@monjalon.net, aconole@redhat.com Date: Fri, 1 Nov 2019 15:21:34 +0000 Message-Id: <42e2dd500467aad09197bb31c2738bbeb11400f0.1572621162.git.vladimir.medvedkin@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Subject: [dpdk-dev] [PATCH v6 01/12] rib: add RIB library X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Add RIB (Routing Information Base) library. This library implements an IPv4 routing table optimized for control plane operations. It implements a control plane struct containing routes in a tree and provides fast add/del operations for routes. Also it allows to perform fast subtree traversals (i.e. retrieve existing subroutes for a giver prefix). This structure will be used as a control plane helper structure for FIB implementation. Also it might be used standalone in other different places such as bitmaps for example. Internal implementation is level compressed binary trie. Signed-off-by: Vladimir Medvedkin --- config/common_base | 5 + doc/api/doxy-api.conf.in | 1 + lib/Makefile | 2 + lib/librte_rib/Makefile | 25 ++ lib/librte_rib/meson.build | 8 + lib/librte_rib/rte_rib.c | 532 +++++++++++++++++++++++++++++++++++++ lib/librte_rib/rte_rib.h | 277 +++++++++++++++++++ lib/librte_rib/rte_rib_version.map | 20 ++ lib/meson.build | 2 +- mk/rte.app.mk | 1 + 10 files changed, 872 insertions(+), 1 deletion(-) create mode 100644 lib/librte_rib/Makefile create mode 100644 lib/librte_rib/meson.build create mode 100644 lib/librte_rib/rte_rib.c create mode 100644 lib/librte_rib/rte_rib.h create mode 100644 lib/librte_rib/rte_rib_version.map diff --git a/config/common_base b/config/common_base index 8ef75c2..5a9d4c3 100644 --- a/config/common_base +++ b/config/common_base @@ -894,6 +894,11 @@ CONFIG_RTE_LIBRTE_RCU=y CONFIG_RTE_LIBRTE_RCU_DEBUG=n # +# Compile librte_rib +# +CONFIG_RTE_LIBRTE_RIB=y + +# # Compile librte_lpm # CONFIG_RTE_LIBRTE_LPM=y diff --git a/doc/api/doxy-api.conf.in b/doc/api/doxy-api.conf.in index 908cee8..3ec012d 100644 --- a/doc/api/doxy-api.conf.in +++ b/doc/api/doxy-api.conf.in @@ -54,6 +54,7 @@ INPUT = @TOPDIR@/doc/api/doxy-api-index.md \ @TOPDIR@/lib/librte_rawdev \ @TOPDIR@/lib/librte_rcu \ @TOPDIR@/lib/librte_reorder \ + @TOPDIR@/lib/librte_rib \ @TOPDIR@/lib/librte_ring \ @TOPDIR@/lib/librte_sched \ @TOPDIR@/lib/librte_security \ diff --git a/lib/Makefile b/lib/Makefile index 41c463d..aa5ee1e 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -51,6 +51,8 @@ DIRS-$(CONFIG_RTE_LIBRTE_HASH) += librte_hash DEPDIRS-librte_hash := librte_eal librte_ring DIRS-$(CONFIG_RTE_LIBRTE_EFD) += librte_efd DEPDIRS-librte_efd := librte_eal librte_ring librte_hash +DIRS-$(CONFIG_RTE_LIBRTE_RIB) += librte_rib +DEPDIRS-librte_rib := librte_eal librte_mempool DIRS-$(CONFIG_RTE_LIBRTE_LPM) += librte_lpm DEPDIRS-librte_lpm := librte_eal librte_hash DIRS-$(CONFIG_RTE_LIBRTE_ACL) += librte_acl diff --git a/lib/librte_rib/Makefile b/lib/librte_rib/Makefile new file mode 100644 index 0000000..79f259a --- /dev/null +++ b/lib/librte_rib/Makefile @@ -0,0 +1,25 @@ +# SPDX-License-Identifier: BSD-3-Clause +# Copyright(c) 2018 Vladimir Medvedkin +# Copyright(c) 2019 Intel Corporation + +include $(RTE_SDK)/mk/rte.vars.mk + +# library name +LIB = librte_rib.a + +CFLAGS += -O3 +CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) +CFLAGS += -DALLOW_EXPERIMENTAL_API +LDLIBS += -lrte_eal -lrte_mempool + +EXPORT_MAP := rte_rib_version.map + +LIBABIVER := 1 + +# all source are stored in SRCS-y +SRCS-$(CONFIG_RTE_LIBRTE_RIB) := rte_rib.c + +# install this header file +SYMLINK-$(CONFIG_RTE_LIBRTE_RIB)-include := rte_rib.h + +include $(RTE_SDK)/mk/rte.lib.mk diff --git a/lib/librte_rib/meson.build b/lib/librte_rib/meson.build new file mode 100644 index 0000000..e7b8920 --- /dev/null +++ b/lib/librte_rib/meson.build @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: BSD-3-Clause +# Copyright(c) 2018 Vladimir Medvedkin +# Copyright(c) 2019 Intel Corporation + +allow_experimental_apis = true +sources = files('rte_rib.c') +headers = files('rte_rib.h') +deps += ['mempool'] diff --git a/lib/librte_rib/rte_rib.c b/lib/librte_rib/rte_rib.c new file mode 100644 index 0000000..55d612d --- /dev/null +++ b/lib/librte_rib/rte_rib.c @@ -0,0 +1,532 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 Vladimir Medvedkin + * Copyright(c) 2019 Intel Corporation + */ + +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +TAILQ_HEAD(rte_rib_list, rte_tailq_entry); +static struct rte_tailq_elem rte_rib_tailq = { + .name = "RTE_RIB", +}; +EAL_REGISTER_TAILQ(rte_rib_tailq) + +#define RTE_RIB_VALID_NODE 1 +/* Maximum depth value possible for IPv4 RIB. */ +#define RIB_MAXDEPTH 32 +/* Maximum length of a RIB name. */ +#define RTE_RIB_NAMESIZE 64 + +struct rte_rib_node { + struct rte_rib_node *left; + struct rte_rib_node *right; + struct rte_rib_node *parent; + uint32_t ip; + uint8_t depth; + uint8_t flag; + uint64_t nh; + __extension__ uint64_t ext[0]; +}; + +struct rte_rib { + char name[RTE_RIB_NAMESIZE]; + struct rte_rib_node *tree; + struct rte_mempool *node_pool; + uint32_t cur_nodes; + uint32_t cur_routes; + uint32_t max_nodes; +}; + +static inline bool +is_valid_node(struct rte_rib_node *node) +{ + return (node->flag & RTE_RIB_VALID_NODE) == RTE_RIB_VALID_NODE; +} + +static inline bool +is_right_node(struct rte_rib_node *node) +{ + return node->parent->right == node; +} + +/* + * Check if ip1 is covered by ip2/depth prefix + */ +static inline bool +is_covered(uint32_t ip1, uint32_t ip2, uint8_t depth) +{ + return ((ip1 ^ ip2) & rte_rib_depth_to_mask(depth)) == 0; +} + +static inline struct rte_rib_node * +get_nxt_node(struct rte_rib_node *node, uint32_t ip) +{ + return (ip & (1 << (31 - node->depth))) ? node->right : node->left; +} + +static struct rte_rib_node * +node_alloc(struct rte_rib *rib) +{ + struct rte_rib_node *ent; + int ret; + + ret = rte_mempool_get(rib->node_pool, (void *)&ent); + if (unlikely(ret != 0)) + return NULL; + ++rib->cur_nodes; + return ent; +} + +static void +node_free(struct rte_rib *rib, struct rte_rib_node *ent) +{ + --rib->cur_nodes; + rte_mempool_put(rib->node_pool, ent); +} + +struct rte_rib_node * +rte_rib_lookup(struct rte_rib *rib, uint32_t ip) +{ + struct rte_rib_node *cur, *prev = NULL; + + if (rib == NULL) { + rte_errno = EINVAL; + return NULL; + } + + cur = rib->tree; + while ((cur != NULL) && is_covered(ip, cur->ip, cur->depth)) { + if (is_valid_node(cur)) + prev = cur; + cur = get_nxt_node(cur, ip); + } + return prev; +} + +struct rte_rib_node * +rte_rib_lookup_parent(struct rte_rib_node *ent) +{ + struct rte_rib_node *tmp; + + if (ent == NULL) + return NULL; + tmp = ent->parent; + while ((tmp != NULL) && !is_valid_node(tmp)) + tmp = tmp->parent; + return tmp; +} + +static struct rte_rib_node * +__rib_lookup_exact(struct rte_rib *rib, uint32_t ip, uint8_t depth) +{ + struct rte_rib_node *cur; + + cur = rib->tree; + while (cur != NULL) { + if ((cur->ip == ip) && (cur->depth == depth) && + is_valid_node(cur)) + return cur; + if ((cur->depth > depth) || + !is_covered(ip, cur->ip, cur->depth)) + break; + cur = get_nxt_node(cur, ip); + } + return NULL; +} + +struct rte_rib_node * +rte_rib_lookup_exact(struct rte_rib *rib, uint32_t ip, uint8_t depth) +{ + if ((rib == NULL) || (depth > RIB_MAXDEPTH)) { + rte_errno = EINVAL; + return NULL; + } + ip &= rte_rib_depth_to_mask(depth); + + return __rib_lookup_exact(rib, ip, depth); +} + +/* + * Traverses on subtree and retrieves more specific routes + * for a given in args ip/depth prefix + * last = NULL means the first invocation + */ +struct rte_rib_node * +rte_rib_get_nxt(struct rte_rib *rib, uint32_t ip, + uint8_t depth, struct rte_rib_node *last, int flag) +{ + struct rte_rib_node *tmp, *prev = NULL; + + if ((rib == NULL) || (depth > RIB_MAXDEPTH)) { + rte_errno = EINVAL; + return NULL; + } + + if (last == NULL) { + tmp = rib->tree; + while ((tmp) && (tmp->depth < depth)) + tmp = get_nxt_node(tmp, ip); + } else { + tmp = last; + while ((tmp->parent != NULL) && (is_right_node(tmp) || + (tmp->parent->right == NULL))) { + tmp = tmp->parent; + if (is_valid_node(tmp) && + (is_covered(tmp->ip, ip, depth) && + (tmp->depth > depth))) + return tmp; + } + tmp = (tmp->parent) ? tmp->parent->right : NULL; + } + while (tmp) { + if (is_valid_node(tmp) && + (is_covered(tmp->ip, ip, depth) && + (tmp->depth > depth))) { + prev = tmp; + if (flag == RTE_RIB_GET_NXT_COVER) + return prev; + } + tmp = (tmp->left) ? tmp->left : tmp->right; + } + return prev; +} + +void +rte_rib_remove(struct rte_rib *rib, uint32_t ip, uint8_t depth) +{ + struct rte_rib_node *cur, *prev, *child; + + cur = rte_rib_lookup_exact(rib, ip, depth); + if (cur == NULL) + return; + + --rib->cur_routes; + cur->flag &= ~RTE_RIB_VALID_NODE; + while (!is_valid_node(cur)) { + if ((cur->left != NULL) && (cur->right != NULL)) + return; + child = (cur->left == NULL) ? cur->right : cur->left; + if (child != NULL) + child->parent = cur->parent; + if (cur->parent == NULL) { + rib->tree = child; + node_free(rib, cur); + return; + } + if (cur->parent->left == cur) + cur->parent->left = child; + else + cur->parent->right = child; + prev = cur; + cur = cur->parent; + node_free(rib, prev); + } +} + +struct rte_rib_node * +rte_rib_insert(struct rte_rib *rib, uint32_t ip, uint8_t depth) +{ + struct rte_rib_node **tmp; + struct rte_rib_node *prev = NULL; + struct rte_rib_node *new_node = NULL; + struct rte_rib_node *common_node = NULL; + int d = 0; + uint32_t common_prefix; + uint8_t common_depth; + + if ((rib == NULL) || (depth > RIB_MAXDEPTH)) { + rte_errno = EINVAL; + return NULL; + } + + tmp = &rib->tree; + ip &= rte_rib_depth_to_mask(depth); + new_node = __rib_lookup_exact(rib, ip, depth); + if (new_node != NULL) { + rte_errno = EEXIST; + return NULL; + } + + new_node = node_alloc(rib); + if (new_node == NULL) { + rte_errno = ENOMEM; + return NULL; + } + new_node->left = NULL; + new_node->right = NULL; + new_node->parent = NULL; + new_node->ip = ip; + new_node->depth = depth; + new_node->flag = RTE_RIB_VALID_NODE; + + /* traverse down the tree to find matching node or closest matching */ + while (1) { + /* insert as the last node in the branch */ + if (*tmp == NULL) { + *tmp = new_node; + new_node->parent = prev; + ++rib->cur_routes; + return *tmp; + } + /* + * Intermediate node found. + * Previous rte_rib_lookup_exact() returned NULL + * but node with proper search criteria is found. + * Validate intermediate node and return. + */ + if ((ip == (*tmp)->ip) && (depth == (*tmp)->depth)) { + node_free(rib, new_node); + (*tmp)->flag |= RTE_RIB_VALID_NODE; + ++rib->cur_routes; + return *tmp; + } + d = (*tmp)->depth; + if ((d >= depth) || !is_covered(ip, (*tmp)->ip, d)) + break; + prev = *tmp; + tmp = (ip & (1 << (31 - d))) ? &(*tmp)->right : &(*tmp)->left; + } + /* closest node found, new_node should be inserted in the middle */ + common_depth = RTE_MIN(depth, (*tmp)->depth); + common_prefix = ip ^ (*tmp)->ip; + d = __builtin_clz(common_prefix); + + common_depth = RTE_MIN(d, common_depth); + common_prefix = ip & rte_rib_depth_to_mask(common_depth); + if ((common_prefix == ip) && (common_depth == depth)) { + /* insert as a parent */ + if ((*tmp)->ip & (1 << (31 - depth))) + new_node->right = *tmp; + else + new_node->left = *tmp; + new_node->parent = (*tmp)->parent; + (*tmp)->parent = new_node; + *tmp = new_node; + } else { + /* create intermediate node */ + common_node = node_alloc(rib); + if (common_node == NULL) { + node_free(rib, new_node); + rte_errno = ENOMEM; + return NULL; + } + common_node->ip = common_prefix; + common_node->depth = common_depth; + common_node->flag = 0; + common_node->parent = (*tmp)->parent; + new_node->parent = common_node; + (*tmp)->parent = common_node; + if ((new_node->ip & (1 << (31 - common_depth))) == 0) { + common_node->left = new_node; + common_node->right = *tmp; + } else { + common_node->left = *tmp; + common_node->right = new_node; + } + *tmp = common_node; + } + ++rib->cur_routes; + return new_node; +} + +int +rte_rib_get_ip(struct rte_rib_node *node, uint32_t *ip) +{ + if ((node == NULL) || (ip == NULL)) { + rte_errno = EINVAL; + return -1; + } + *ip = node->ip; + return 0; +} + +int +rte_rib_get_depth(struct rte_rib_node *node, uint8_t *depth) +{ + if ((node == NULL) || (depth == NULL)) { + rte_errno = EINVAL; + return -1; + } + *depth = node->depth; + return 0; +} + +void * +rte_rib_get_ext(struct rte_rib_node *node) +{ + return (node == NULL) ? NULL : &node->ext[0]; +} + +int +rte_rib_get_nh(struct rte_rib_node *node, uint64_t *nh) +{ + if ((node == NULL) || (nh == NULL)) { + rte_errno = EINVAL; + return -1; + } + *nh = node->nh; + return 0; +} + +int +rte_rib_set_nh(struct rte_rib_node *node, uint64_t nh) +{ + if (node == NULL) { + rte_errno = EINVAL; + return -1; + } + node->nh = nh; + return 0; +} + +struct rte_rib * +rte_rib_create(const char *name, int socket_id, struct rte_rib_conf *conf) +{ + char mem_name[RTE_RIB_NAMESIZE]; + struct rte_rib *rib = NULL; + struct rte_tailq_entry *te; + struct rte_rib_list *rib_list; + struct rte_mempool *node_pool; + + /* Check user arguments. */ + if ((name == NULL) || (conf == NULL) || + (conf->max_nodes == 0)) { + rte_errno = EINVAL; + return NULL; + } + + snprintf(mem_name, sizeof(mem_name), "MP_%s", name); + node_pool = rte_mempool_create(mem_name, conf->max_nodes, + sizeof(struct rte_rib_node) + conf->ext_sz, 0, 0, + NULL, NULL, NULL, NULL, socket_id, 0); + + if (node_pool == NULL) { + RTE_LOG(ERR, LPM, + "Can not allocate mempool for RIB %s\n", name); + return NULL; + } + + snprintf(mem_name, sizeof(mem_name), "RIB_%s", name); + rib_list = RTE_TAILQ_CAST(rte_rib_tailq.head, rte_rib_list); + + rte_mcfg_tailq_write_lock(); + + /* guarantee there's no existing */ + TAILQ_FOREACH(te, rib_list, next) { + rib = (struct rte_rib *)te->data; + if (strncmp(name, rib->name, RTE_RIB_NAMESIZE) == 0) + break; + } + rib = NULL; + if (te != NULL) { + rte_errno = EEXIST; + goto exit; + } + + /* allocate tailq entry */ + te = rte_zmalloc("RIB_TAILQ_ENTRY", sizeof(*te), 0); + if (te == NULL) { + RTE_LOG(ERR, LPM, + "Can not allocate tailq entry for RIB %s\n", name); + rte_errno = ENOMEM; + goto exit; + } + + /* Allocate memory to store the RIB data structures. */ + rib = rte_zmalloc_socket(mem_name, + sizeof(struct rte_rib), RTE_CACHE_LINE_SIZE, socket_id); + if (rib == NULL) { + RTE_LOG(ERR, LPM, "RIB %s memory allocation failed\n", name); + rte_errno = ENOMEM; + goto free_te; + } + + rte_strlcpy(rib->name, name, sizeof(rib->name)); + rib->tree = NULL; + rib->max_nodes = conf->max_nodes; + rib->node_pool = node_pool; + te->data = (void *)rib; + TAILQ_INSERT_TAIL(rib_list, te, next); + + rte_mcfg_tailq_write_unlock(); + + return rib; + +free_te: + rte_free(te); +exit: + rte_mcfg_tailq_write_unlock(); + rte_mempool_free(node_pool); + + return NULL; +} + +struct rte_rib * +rte_rib_find_existing(const char *name) +{ + struct rte_rib *rib = NULL; + struct rte_tailq_entry *te; + struct rte_rib_list *rib_list; + + rib_list = RTE_TAILQ_CAST(rte_rib_tailq.head, rte_rib_list); + + rte_mcfg_tailq_read_lock(); + TAILQ_FOREACH(te, rib_list, next) { + rib = (struct rte_rib *) te->data; + if (strncmp(name, rib->name, RTE_RIB_NAMESIZE) == 0) + break; + } + rte_mcfg_tailq_read_unlock(); + + if (te == NULL) { + rte_errno = ENOENT; + return NULL; + } + + return rib; +} + +void +rte_rib_free(struct rte_rib *rib) +{ + struct rte_tailq_entry *te; + struct rte_rib_list *rib_list; + struct rte_rib_node *tmp = NULL; + + if (rib == NULL) + return; + + rib_list = RTE_TAILQ_CAST(rte_rib_tailq.head, rte_rib_list); + + rte_mcfg_tailq_write_lock(); + + /* find our tailq entry */ + TAILQ_FOREACH(te, rib_list, next) { + if (te->data == (void *)rib) + break; + } + if (te != NULL) + TAILQ_REMOVE(rib_list, te, next); + + rte_mcfg_tailq_write_unlock(); + + while ((tmp = rte_rib_get_nxt(rib, 0, 0, tmp, + RTE_RIB_GET_NXT_ALL)) != NULL) + rte_rib_remove(rib, tmp->ip, tmp->depth); + + rte_mempool_free(rib->node_pool); + rte_free(rib); + rte_free(te); +} diff --git a/lib/librte_rib/rte_rib.h b/lib/librte_rib/rte_rib.h new file mode 100644 index 0000000..6b70de9 --- /dev/null +++ b/lib/librte_rib/rte_rib.h @@ -0,0 +1,277 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 Vladimir Medvedkin + * Copyright(c) 2019 Intel Corporation + */ + +#ifndef _RTE_RIB_H_ +#define _RTE_RIB_H_ + +/** + * @file + * Level compressed tree implementation for IPv4 Longest Prefix Match + */ + +#include + +/** + * rte_rib_get_nxt() flags + */ +enum { + /** flag to get all subroutes in a RIB tree */ + RTE_RIB_GET_NXT_ALL, + /** flag to get first matched subroutes in a RIB tree */ + RTE_RIB_GET_NXT_COVER +}; + +struct rte_rib; +struct rte_rib_node; + +/** RIB configuration structure */ +struct rte_rib_conf { + /** + * Size of extension block inside rte_rib_node. + * This space could be used to store additional user + * defined data. + */ + size_t ext_sz; + /* size of rte_rib_node's pool */ + int max_nodes; +}; + +/** + * Get an IPv4 mask from prefix length + * It is caller responsibility to make sure depth is not bigger than 32 + * + * @param depth + * prefix length + * @return + * IPv4 mask + */ +static inline uint32_t +rte_rib_depth_to_mask(uint8_t depth) +{ + return (uint32_t)(UINT64_MAX << (32 - depth)); +} + +/** + * Lookup an IP into the RIB structure + * + * @param rib + * RIB object handle + * @param ip + * IP to be looked up in the RIB + * @return + * pointer to struct rte_rib_node on success + * NULL otherwise + */ +__rte_experimental +struct rte_rib_node * +rte_rib_lookup(struct rte_rib *rib, uint32_t ip); + +/** + * Lookup less specific route into the RIB structure + * + * @param ent + * Pointer to struct rte_rib_node that represents target route + * @return + * pointer to struct rte_rib_node that represents + * less specific route on success + * NULL otherwise + */ +__rte_experimental +struct rte_rib_node * +rte_rib_lookup_parent(struct rte_rib_node *ent); + +/** + * Lookup prefix into the RIB structure + * + * @param rib + * RIB object handle + * @param ip + * net to be looked up in the RIB + * @param depth + * prefix length + * @return + * pointer to struct rte_rib_node on success + * NULL otherwise + */ +__rte_experimental +struct rte_rib_node * +rte_rib_lookup_exact(struct rte_rib *rib, uint32_t ip, uint8_t depth); + +/** + * Retrieve next more specific prefix from the RIB + * that is covered by ip/depth supernet in an ascending order + * + * @param rib + * RIB object handle + * @param ip + * net address of supernet prefix that covers returned more specific prefixes + * @param depth + * supernet prefix length + * @param last + * pointer to the last returned prefix to get next prefix + * or + * NULL to get first more specific prefix + * @param flag + * -RTE_RIB_GET_NXT_ALL + * get all prefixes from subtrie + * -RTE_RIB_GET_NXT_COVER + * get only first more specific prefix even if it have more specifics + * @return + * pointer to the next more specific prefix + * NULL if there is no prefixes left + */ +__rte_experimental +struct rte_rib_node * +rte_rib_get_nxt(struct rte_rib *rib, uint32_t ip, uint8_t depth, + struct rte_rib_node *last, int flag); + +/** + * Remove prefix from the RIB + * + * @param rib + * RIB object handle + * @param ip + * net to be removed from the RIB + * @param depth + * prefix length + */ +__rte_experimental +void +rte_rib_remove(struct rte_rib *rib, uint32_t ip, uint8_t depth); + +/** + * Insert prefix into the RIB + * + * @param rib + * RIB object handle + * @param ip + * net to be inserted to the RIB + * @param depth + * prefix length + * @return + * pointer to new rte_rib_node on success + * NULL otherwise + */ +__rte_experimental +struct rte_rib_node * +rte_rib_insert(struct rte_rib *rib, uint32_t ip, uint8_t depth); + +/** + * Get an ip from rte_rib_node + * + * @param node + * pointer to the rib node + * @param ip + * pointer to the ip to save + * @return + * 0 on success. + * -1 on failure with rte_errno indicating reason for failure. + */ +__rte_experimental +int +rte_rib_get_ip(struct rte_rib_node *node, uint32_t *ip); + +/** + * Get a depth from rte_rib_node + * + * @param node + * pointer to the rib node + * @param depth + * pointer to the depth to save + * @return + * 0 on success. + * -1 on failure with rte_errno indicating reason for failure. + */ +__rte_experimental +int +rte_rib_get_depth(struct rte_rib_node *node, uint8_t *depth); + +/** + * Get ext field from the rib node + * It is caller responsibility to make sure there are necessary space + * for the ext field inside rib node. + * + * @param node + * pointer to the rib node + * @return + * pointer to the ext + */ +__rte_experimental +void * +rte_rib_get_ext(struct rte_rib_node *node); + +/** + * Get nexthop from the rib node + * + * @param node + * pointer to the rib node + * @param nh + * pointer to the nexthop to save + * @return + * 0 on success. + * -1 on failure with rte_errno indicating reason for failure. + */ +__rte_experimental +int +rte_rib_get_nh(struct rte_rib_node *node, uint64_t *nh); + +/** + * Set nexthop into the rib node + * + * @param node + * pointer to the rib node + * @param nh + * nexthop value to set to the rib node + * @return + * 0 on success. + * -1 on failure with rte_errno indicating reason for failure. + */ +__rte_experimental +int +rte_rib_set_nh(struct rte_rib_node *node, uint64_t nh); + +/** + * Create RIB + * + * @param name + * RIB name + * @param socket_id + * NUMA socket ID for RIB table memory allocation + * @param conf + * Structure containing the configuration + * @return + * Handle to RIB object on success + * NULL otherwise with rte_errno indicating reason for failure. + */ +__rte_experimental +struct rte_rib * +rte_rib_create(const char *name, int socket_id, struct rte_rib_conf *conf); + +/** + * Find an existing RIB object and return a pointer to it. + * + * @param name + * Name of the rib object as passed to rte_rib_create() + * @return + * Pointer to RIB object on success + * NULL otherwise with rte_errno indicating reason for failure. + */ +__rte_experimental +struct rte_rib * +rte_rib_find_existing(const char *name); + +/** + * Free an RIB object. + * + * @param rib + * RIB object handle + * @return + * None + */ +__rte_experimental +void +rte_rib_free(struct rte_rib *rib); + +#endif /* _RTE_RIB_H_ */ diff --git a/lib/librte_rib/rte_rib_version.map b/lib/librte_rib/rte_rib_version.map new file mode 100644 index 0000000..1432a22 --- /dev/null +++ b/lib/librte_rib/rte_rib_version.map @@ -0,0 +1,20 @@ +EXPERIMENTAL { + global: + + rte_rib_create; + rte_rib_find_existing; + rte_rib_free; + rte_rib_get_depth; + rte_rib_get_ext; + rte_rib_get_ip; + rte_rib_get_nh; + rte_rib_get_nxt; + rte_rib_insert; + rte_rib_lookup; + rte_rib_lookup_parent; + rte_rib_lookup_exact; + rte_rib_set_nh; + rte_rib_remove; + + local: *; +}; diff --git a/lib/meson.build b/lib/meson.build index e5ff838..d7f2a04 100644 --- a/lib/meson.build +++ b/lib/meson.build @@ -22,7 +22,7 @@ libraries = [ 'gro', 'gso', 'ip_frag', 'jobstats', 'kni', 'latencystats', 'lpm', 'member', 'power', 'pdump', 'rawdev', - 'rcu', 'reorder', 'sched', 'security', 'stack', 'vhost', + 'rcu', 'rib', 'reorder', 'sched', 'security', 'stack', 'vhost', # ipsec lib depends on net, crypto and security 'ipsec', # add pkt framework libs which use other libs from above diff --git a/mk/rte.app.mk b/mk/rte.app.mk index ba5c39e..4517874 100644 --- a/mk/rte.app.mk +++ b/mk/rte.app.mk @@ -45,6 +45,7 @@ _LDLIBS-$(CONFIG_RTE_LIBRTE_PDUMP) += -lrte_pdump _LDLIBS-$(CONFIG_RTE_LIBRTE_DISTRIBUTOR) += -lrte_distributor _LDLIBS-$(CONFIG_RTE_LIBRTE_IP_FRAG) += -lrte_ip_frag _LDLIBS-$(CONFIG_RTE_LIBRTE_METER) += -lrte_meter +_LDLIBS-$(CONFIG_RTE_LIBRTE_RIB) += -lrte_rib _LDLIBS-$(CONFIG_RTE_LIBRTE_LPM) += -lrte_lpm _LDLIBS-$(CONFIG_RTE_LIBRTE_ACL) += -lrte_acl _LDLIBS-$(CONFIG_RTE_LIBRTE_TELEMETRY) += --no-as-needed -- 2.7.4