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github_dpdk
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v26.07-rc1
lib/graph/graph.c
893 строки
20 KB
Luca Boccassi
doc: fix grammar after the verb allow
01 июн 2026, 16:02
01 июн 2026, 16:02
a14bda0
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/* SPDX-License-Identifier: BSD-3-Clause * Copyright(C) 2020 Marvell International Ltd. */ #include <fnmatch.h> #include <stdbool.h> #include <stdlib.h> #include <eal_export.h> #include <rte_common.h> #include <rte_debug.h> #include <rte_errno.h> #include <rte_malloc.h> #include <rte_memzone.h> #include <rte_spinlock.h> #include <rte_string_fns.h> #include "graph_private.h" #include "graph_pcap_private.h" static struct graph_head graph_list = STAILQ_HEAD_INITIALIZER(graph_list); static rte_spinlock_t graph_lock = RTE_SPINLOCK_INITIALIZER; bool graph_is_node_active_in_graph(struct node *node) { struct graph *graph; STAILQ_FOREACH(graph, &graph_list, next) { struct graph_node *graph_node; STAILQ_FOREACH(graph_node, &graph->node_list, next) if (graph_node->node == node) return 1; } return 0; } /* Private functions */ static struct graph * graph_from_id(rte_graph_t id) { struct graph *graph; STAILQ_FOREACH(graph, &graph_list, next) { if (graph->id == id) return graph; } rte_errno = EINVAL; return NULL; } static rte_graph_t graph_next_free_id(void) { struct graph *graph; rte_graph_t id = 0; STAILQ_FOREACH(graph, &graph_list, next) { if (id < graph->id) break; id = graph->id + 1; } return id; } static void graph_insert_ordered(struct graph *graph) { struct graph *after, *g; after = NULL; STAILQ_FOREACH(g, &graph_list, next) { if (g->id < graph->id) after = g; else if (g->id > graph->id) break; } if (after == NULL) { STAILQ_INSERT_HEAD(&graph_list, graph, next); } else { STAILQ_INSERT_AFTER(&graph_list, after, graph, next); } } struct graph_head * graph_list_head_get(void) { return &graph_list; } rte_spinlock_t * graph_spinlock_get(void) { return &graph_lock; } void graph_spinlock_lock(void) { rte_spinlock_lock(graph_spinlock_get()); } void graph_spinlock_unlock(void) { rte_spinlock_unlock(graph_spinlock_get()); } static int graph_node_add(struct graph *graph, struct node *node) { struct graph_node *graph_node; size_t sz; /* Skip the duplicate nodes */ STAILQ_FOREACH(graph_node, &graph->node_list, next) if (strncmp(node->name, graph_node->node->name, RTE_NODE_NAMESIZE) == 0) return 0; /* Allocate new graph node object */ sz = sizeof(*graph_node) + node->nb_edges * sizeof(struct node *); graph_node = calloc(1, sz); if (graph_node == NULL) SET_ERR_JMP(ENOMEM, free, "Failed to calloc %s object", node->name); /* Initialize the graph node */ graph_node->node = node; /* Add to graph node list */ STAILQ_INSERT_TAIL(&graph->node_list, graph_node, next); return 0; free: free(graph_node); return -rte_errno; } static struct graph_node * node_to_graph_node(struct graph *graph, struct node *node) { struct graph_node *graph_node; STAILQ_FOREACH(graph_node, &graph->node_list, next) if (graph_node->node == node) return graph_node; SET_ERR_JMP(ENODEV, fail, "Found isolated node %s", node->name); fail: return NULL; } static int graph_node_edges_add(struct graph *graph) { struct graph_node *graph_node; struct node *adjacency; const char *next; rte_edge_t i; STAILQ_FOREACH(graph_node, &graph->node_list, next) { for (i = 0; i < graph_node->node->nb_edges; i++) { next = graph_node->node->next_nodes[i]; adjacency = node_from_name(next); if (adjacency == NULL) SET_ERR_JMP(EINVAL, fail, "Node %s not registered", next); if (graph_node_add(graph, adjacency)) goto fail; } } return 0; fail: return -rte_errno; } static int graph_adjacency_list_update(struct graph *graph) { struct graph_node *graph_node, *tmp; struct node *adjacency; const char *next; rte_edge_t i; STAILQ_FOREACH(graph_node, &graph->node_list, next) { for (i = 0; i < graph_node->node->nb_edges; i++) { next = graph_node->node->next_nodes[i]; adjacency = node_from_name(next); if (adjacency == NULL) SET_ERR_JMP(EINVAL, fail, "Node %s not registered", next); tmp = node_to_graph_node(graph, adjacency); if (tmp == NULL) goto fail; graph_node->adjacency_list[i] = tmp; } } return 0; fail: return -rte_errno; } static int expand_pattern_to_node(struct graph *graph, const char *pattern) { struct node_head *node_head = node_list_head_get(); bool found = false; struct node *node; /* Check for pattern match */ STAILQ_FOREACH(node, node_head, next) { if (fnmatch(pattern, node->name, 0) == 0) { if (graph_node_add(graph, node)) goto fail; found = true; } } if (found == false) SET_ERR_JMP(EFAULT, fail, "Pattern %s node not found", pattern); return 0; fail: return -rte_errno; } static void graph_cleanup(struct graph *graph) { struct graph_node *graph_node; while (!STAILQ_EMPTY(&graph->node_list)) { graph_node = STAILQ_FIRST(&graph->node_list); STAILQ_REMOVE_HEAD(&graph->node_list, next); free(graph_node); } } static int graph_node_init(struct graph *graph) { struct graph_node *graph_node; const char *name; int rc; STAILQ_FOREACH(graph_node, &graph->node_list, next) { if (graph_node->node->init) { name = graph_node->node->name; rc = graph_node->node->init( graph->graph, graph_node_name_to_ptr(graph->graph, name)); if (rc) SET_ERR_JMP(rc, err, "Node %s init() failed", name); } } return 0; err: return -rte_errno; } static void graph_node_fini(struct graph *graph) { struct graph_node *graph_node; STAILQ_FOREACH(graph_node, &graph->node_list, next) if (graph_node->node->fini) graph_node->node->fini( graph->graph, graph_node_name_to_ptr(graph->graph, graph_node->node->name)); } void graph_node_replace_all(struct node *old, struct node *new) { struct graph_node *graph_node; struct graph *graph; STAILQ_FOREACH(graph, &graph_list, next) { STAILQ_FOREACH(graph_node, &graph->node_list, next) { if (graph_node->node == old) graph_node->node = new; } } } static struct rte_graph * graph_mem_fixup_node_ctx(struct rte_graph *graph) { struct rte_node *node; struct node *node_db; rte_graph_off_t off; rte_node_t count; const char *name; rte_graph_foreach_node(count, off, graph, node) { if (node->parent_id == RTE_NODE_ID_INVALID) /* Static node */ name = node->name; else /* Cloned node */ name = node->parent; node_db = node_from_name(name); if (node_db == NULL) SET_ERR_JMP(ENOLINK, fail, "Node %s not found", name); if (graph->pcap_enable) { node->process = graph_pcap_dispatch; node->original_process = node_db->process; } else node->process = node_db->process; } return graph; fail: return NULL; } static struct rte_graph * graph_mem_fixup_secondary(struct rte_graph *graph) { if (graph == NULL || rte_eal_process_type() == RTE_PROC_PRIMARY) return graph; if (graph_pcap_file_open(graph->pcap_filename) || graph_pcap_mp_init()) graph_pcap_exit(graph); return graph_mem_fixup_node_ctx(graph); } static bool graph_src_node_avail(struct graph *graph) { struct graph_node *graph_node; STAILQ_FOREACH(graph_node, &graph->node_list, next) if ((graph_node->node->flags & RTE_NODE_SOURCE_F) && (graph_node->node->lcore_id == RTE_MAX_LCORE || graph->lcore_id == graph_node->node->lcore_id)) return true; return false; } RTE_EXPORT_SYMBOL(rte_graph_model_mcore_dispatch_core_bind) int rte_graph_model_mcore_dispatch_core_bind(rte_graph_t id, int lcore) { struct graph *graph; if (graph_from_id(id) == NULL) { rte_errno = ENOENT; goto fail; } if (rte_lcore_has_role(lcore, ROLE_OFF)) SET_ERR_JMP(ENOLINK, fail, "lcore %d is invalid", lcore); STAILQ_FOREACH(graph, &graph_list, next) if (graph->id == id) break; if (graph->graph->model != RTE_GRAPH_MODEL_MCORE_DISPATCH) { rte_errno = EPERM; goto fail; } graph->lcore_id = lcore; graph->graph->dispatch.lcore_id = graph->lcore_id; graph->socket = rte_lcore_to_socket_id(lcore); /* check the availability of source node */ if (!graph_src_node_avail(graph)) graph->graph->head = 0; return 0; fail: return -rte_errno; } RTE_EXPORT_SYMBOL(rte_graph_model_mcore_dispatch_core_unbind) void rte_graph_model_mcore_dispatch_core_unbind(rte_graph_t id) { struct graph *graph; if (graph_from_id(id) == NULL) goto fail; STAILQ_FOREACH(graph, &graph_list, next) if (graph->id == id) break; graph->lcore_id = RTE_MAX_LCORE; graph->graph->dispatch.lcore_id = RTE_MAX_LCORE; fail: return; } RTE_EXPORT_SYMBOL(rte_graph_lookup) struct rte_graph * rte_graph_lookup(const char *name) { const struct rte_memzone *mz; struct rte_graph *rc = NULL; mz = rte_memzone_lookup(name); if (mz) rc = mz->addr; return graph_mem_fixup_secondary(rc); } RTE_EXPORT_SYMBOL(rte_graph_create) rte_graph_t rte_graph_create(const char *name, struct rte_graph_param *prm) { rte_node_t src_node_count; struct graph *graph; const char *pattern; uint16_t i; graph_spinlock_lock(); /* Check arguments sanity */ if (prm == NULL) SET_ERR_JMP(EINVAL, fail, "Param should not be NULL"); if (name == NULL) SET_ERR_JMP(EINVAL, fail, "Graph name should not be NULL"); /* Check for existence of duplicate graph */ STAILQ_FOREACH(graph, &graph_list, next) if (strncmp(name, graph->name, RTE_GRAPH_NAMESIZE) == 0) SET_ERR_JMP(EEXIST, fail, "Found duplicate graph %s", name); /* Create graph object */ graph = calloc(1, sizeof(*graph)); if (graph == NULL) SET_ERR_JMP(ENOMEM, fail, "Failed to calloc graph object"); /* Initialize the graph object */ STAILQ_INIT(&graph->node_list); if (rte_strscpy(graph->name, name, RTE_GRAPH_NAMESIZE) < 0) SET_ERR_JMP(E2BIG, free, "Too big name=%s", name); /* Expand node pattern and add the nodes to the graph */ for (i = 0; i < prm->nb_node_patterns; i++) { pattern = prm->node_patterns[i]; if (expand_pattern_to_node(graph, pattern)) goto graph_cleanup; } /* Go over all the nodes edges and add them to the graph */ if (graph_node_edges_add(graph)) goto graph_cleanup; /* Update adjacency list of all nodes in the graph */ if (graph_adjacency_list_update(graph)) goto graph_cleanup; /* Make sure at least a source node present in the graph */ src_node_count = graph_src_nodes_count(graph); if (src_node_count == 0) goto graph_cleanup; /* Make sure no node is pointing to source node */ if (graph_node_has_edge_to_src_node(graph)) goto graph_cleanup; /* Don't allow node has loop to self */ if (graph_node_has_loop_edge(graph)) goto graph_cleanup; /* Do BFS from src nodes on the graph to find isolated nodes */ if (graph_has_isolated_node(graph)) goto graph_cleanup; /* Initialize pcap config. */ graph_pcap_enable(prm->pcap_enable); /* Initialize graph object */ graph->socket = prm->socket_id; graph->src_node_count = src_node_count; graph->node_count = graph_nodes_count(graph); graph->id = graph_next_free_id(); graph->parent_id = RTE_GRAPH_ID_INVALID; graph->lcore_id = RTE_MAX_LCORE; graph->num_pkt_to_capture = prm->num_pkt_to_capture; if (prm->pcap_filename) rte_strscpy(graph->pcap_filename, prm->pcap_filename, RTE_GRAPH_PCAP_FILE_SZ); /* Allocate the Graph fast path memory and populate the data */ if (graph_fp_mem_create(graph)) goto graph_cleanup; /* Call init() of the all the nodes in the graph */ if (graph_node_init(graph)) goto graph_mem_destroy; /* All good, Lets add the graph to the list */ graph_insert_ordered(graph); graph_spinlock_unlock(); return graph->id; graph_mem_destroy: graph_fp_mem_destroy(graph); graph_cleanup: graph_cleanup(graph); free: free(graph); fail: graph_spinlock_unlock(); return RTE_GRAPH_ID_INVALID; } RTE_EXPORT_SYMBOL(rte_graph_destroy) int rte_graph_destroy(rte_graph_t id) { struct graph *graph, *tmp; int rc = -ENOENT; graph_spinlock_lock(); graph = STAILQ_FIRST(&graph_list); while (graph != NULL) { tmp = STAILQ_NEXT(graph, next); if (graph->id == id) { /* Destroy the schedule work queue if has */ if (rte_graph_worker_model_get(graph->graph) == RTE_GRAPH_MODEL_MCORE_DISPATCH) graph_sched_wq_destroy(graph); /* Call fini() of the all the nodes in the graph */ graph_node_fini(graph); /* Destroy graph fast path memory */ rc = graph_fp_mem_destroy(graph); if (rc) SET_ERR_JMP(rc, done, "Graph %s destroy failed", graph->name); graph_cleanup(graph); STAILQ_REMOVE(&graph_list, graph, graph, next); free(graph); goto done; } graph = tmp; } done: graph_spinlock_unlock(); return rc; } static rte_graph_t graph_clone(struct graph *parent_graph, const char *name, struct rte_graph_param *prm) { struct graph_node *graph_node; struct graph *graph; graph_spinlock_lock(); /* Don't allow cloning a node from a cloned graph */ if (parent_graph->parent_id != RTE_GRAPH_ID_INVALID) SET_ERR_JMP(EEXIST, fail, "A cloned graph is not allowed to be cloned"); /* Create graph object */ graph = calloc(1, sizeof(*graph)); if (graph == NULL) SET_ERR_JMP(ENOMEM, fail, "Failed to calloc cloned graph object"); /* Naming ceremony of the new graph. name is node->name + "-" + name */ if (clone_name(graph->name, parent_graph->name, name)) goto free; /* Check for existence of duplicate graph */ if (rte_graph_from_name(graph->name) != RTE_GRAPH_ID_INVALID) SET_ERR_JMP(EEXIST, free, "Found duplicate graph %s", graph->name); /* Clone nodes from parent graph firstly */ STAILQ_INIT(&graph->node_list); STAILQ_FOREACH(graph_node, &parent_graph->node_list, next) { if (graph_node_add(graph, graph_node->node)) goto graph_cleanup; } /* Just update adjacency list of all nodes in the graph */ if (graph_adjacency_list_update(graph)) goto graph_cleanup; /* Initialize the graph object */ graph->src_node_count = parent_graph->src_node_count; graph->node_count = parent_graph->node_count; graph->parent_id = parent_graph->id; graph->lcore_id = parent_graph->lcore_id; graph->socket = parent_graph->socket; graph->id = graph_next_free_id(); /* Allocate the Graph fast path memory and populate the data */ if (graph_fp_mem_create(graph)) goto graph_cleanup; /* Clone the graph model */ graph->graph->model = parent_graph->graph->model; /* Create the graph schedule work queue */ if (rte_graph_worker_model_get(graph->graph) == RTE_GRAPH_MODEL_MCORE_DISPATCH) { if (graph_sched_wq_create(graph, parent_graph, prm)) goto graph_mem_destroy; graph->graph->dispatch.notify_cb = prm->dispatch.notify_cb; graph->graph->dispatch.cb_priv = prm->dispatch.cb_priv; } /* Call init() of the all the nodes in the graph */ if (graph_node_init(graph)) goto graph_mem_destroy; /* All good, Lets add the graph to the list */ graph_insert_ordered(graph); graph_spinlock_unlock(); return graph->id; graph_mem_destroy: graph_fp_mem_destroy(graph); graph_cleanup: graph_cleanup(graph); free: free(graph); fail: graph_spinlock_unlock(); return RTE_GRAPH_ID_INVALID; } RTE_EXPORT_SYMBOL(rte_graph_clone) rte_graph_t rte_graph_clone(rte_graph_t id, const char *name, struct rte_graph_param *prm) { struct graph *graph; if (graph_from_id(id) == NULL) goto fail; STAILQ_FOREACH(graph, &graph_list, next) if (graph->id == id) return graph_clone(graph, name, prm); fail: return RTE_GRAPH_ID_INVALID; } RTE_EXPORT_SYMBOL(rte_graph_from_name) rte_graph_t rte_graph_from_name(const char *name) { struct graph *graph; STAILQ_FOREACH(graph, &graph_list, next) if (strncmp(graph->name, name, RTE_GRAPH_NAMESIZE) == 0) return graph->id; return RTE_GRAPH_ID_INVALID; } RTE_EXPORT_SYMBOL(rte_graph_id_to_name) char * rte_graph_id_to_name(rte_graph_t id) { struct graph *graph; if (graph_from_id(id) == NULL) goto fail; STAILQ_FOREACH(graph, &graph_list, next) if (graph->id == id) return graph->name; fail: return NULL; } RTE_EXPORT_SYMBOL(rte_graph_node_get) struct rte_node * rte_graph_node_get(rte_graph_t gid, uint32_t nid) { struct rte_node *node; struct graph *graph; rte_graph_off_t off; rte_node_t count; if (graph_from_id(gid) == NULL) goto fail; STAILQ_FOREACH(graph, &graph_list, next) if (graph->id == gid) { rte_graph_foreach_node(count, off, graph->graph, node) { if (node->id == nid) return node; } break; } fail: return NULL; } RTE_EXPORT_SYMBOL(rte_graph_node_get_by_name) struct rte_node * rte_graph_node_get_by_name(const char *graph_name, const char *node_name) { struct rte_node *node; struct graph *graph; rte_graph_off_t off; rte_node_t count; STAILQ_FOREACH(graph, &graph_list, next) if (!strncmp(graph->name, graph_name, RTE_GRAPH_NAMESIZE)) { rte_graph_foreach_node(count, off, graph->graph, node) { if (!strncmp(node->name, node_name, RTE_NODE_NAMESIZE)) return node; } break; } return NULL; } RTE_EXPORT_SYMBOL(__rte_node_stream_alloc) void __rte_noinline __rte_node_stream_alloc(struct rte_graph *graph, struct rte_node *node) { uint16_t size = node->size; RTE_VERIFY(size != UINT16_MAX); /* Allocate double amount of size to avoid immediate realloc */ size = RTE_MIN(UINT16_MAX, RTE_MAX(RTE_GRAPH_BURST_SIZE, size * 2)); node->objs = rte_realloc_socket(node->objs, size * sizeof(void *), RTE_CACHE_LINE_SIZE, graph->socket); RTE_VERIFY(node->objs); node->size = size; node->realloc_count++; } RTE_EXPORT_SYMBOL(__rte_node_stream_alloc_size) void __rte_noinline __rte_node_stream_alloc_size(struct rte_graph *graph, struct rte_node *node, uint16_t req_size) { uint16_t size = node->size; RTE_VERIFY(size != UINT16_MAX); /* Allocate double amount of size to avoid immediate realloc */ size = RTE_MIN(UINT16_MAX, RTE_MAX(RTE_GRAPH_BURST_SIZE, req_size * 2)); node->objs = rte_realloc_socket(node->objs, size * sizeof(void *), RTE_CACHE_LINE_SIZE, graph->socket); RTE_VERIFY(node->objs); node->size = size; node->realloc_count++; } static int graph_to_dot(FILE *f, struct graph *graph) { struct graph_node *graph_node; char *node_name; rte_edge_t i; int rc; rc = fprintf(f, "digraph \"%s\" {\n\trankdir=LR;\n", graph->name); if (rc < 0) goto end; rc = fprintf(f, "\tnode [margin=0.02 fontsize=11 fontname=sans];\n"); if (rc < 0) goto end; STAILQ_FOREACH(graph_node, &graph->node_list, next) { const char *attrs = ""; node_name = graph_node->node->name; rc = fprintf(f, "\t\"%s\"", node_name); if (rc < 0) goto end; if (graph_node->node->flags & RTE_NODE_SOURCE_F) { attrs = " [color=blue style=bold]"; rc = fprintf(f, "%s", attrs); if (rc < 0) goto end; } else if (graph_node->node->nb_edges == 0) { rc = fprintf(f, " [fontcolor=darkorange shape=plain]"); if (rc < 0) goto end; } rc = fprintf(f, ";\n"); if (rc < 0) goto end; for (i = 0; i < graph_node->node->nb_edges; i++) { const char *node_attrs = attrs; if (graph_node->adjacency_list[i]->node->nb_edges == 0) node_attrs = " [color=darkorange]"; rc = fprintf(f, "\t\"%s\" -> \"%s\"%s;\n", node_name, graph_node->adjacency_list[i]->node->name, node_attrs); if (rc < 0) goto end; } } rc = fprintf(f, "}\n"); if (rc < 0) goto end; return 0; end: rte_errno = EBADF; return -rte_errno; } RTE_EXPORT_SYMBOL(rte_graph_export) int rte_graph_export(const char *name, FILE *f) { struct graph *graph; int rc = ENOENT; STAILQ_FOREACH(graph, &graph_list, next) { if (strncmp(graph->name, name, RTE_GRAPH_NAMESIZE) == 0) { rc = graph_to_dot(f, graph); goto end; } } end: return -rc; } static void graph_scan_dump(FILE *f, rte_graph_t id, bool all) { struct graph *graph; RTE_VERIFY(f); if (graph_from_id(id) == NULL) goto fail; STAILQ_FOREACH(graph, &graph_list, next) { if (all == true) { graph_dump(f, graph); } else if (graph->id == id) { graph_dump(f, graph); return; } } fail: return; } RTE_EXPORT_SYMBOL(rte_graph_dump) void rte_graph_dump(FILE *f, rte_graph_t id) { graph_scan_dump(f, id, false); } RTE_EXPORT_SYMBOL(rte_graph_list_dump) void rte_graph_list_dump(FILE *f) { graph_scan_dump(f, 0, true); } RTE_EXPORT_SYMBOL(rte_graph_max_count) rte_graph_t rte_graph_max_count(void) { struct graph *graph; rte_graph_t count = 0; STAILQ_FOREACH(graph, &graph_list, next) count++; return count; } RTE_LOG_REGISTER_DEFAULT(rte_graph_logtype, INFO);