From e245a809296dad1ea22956f015751cc172a44ad2 Mon Sep 17 00:00:00 2001 From: Sander Vrijders Date: Mon, 25 Sep 2017 14:26:26 +0200 Subject: ipcpd: normal: Return list as routing table This returns a list as routing table instead of a pointer to a pointer to a pointer, which simplifies the looping through the routing table and makes it more extensible for future additions. --- src/ipcpd/normal/pol/tests/graph_test.c | 130 ++++++++++++++++++++------------ 1 file changed, 83 insertions(+), 47 deletions(-) (limited to 'src/ipcpd/normal/pol/tests/graph_test.c') diff --git a/src/ipcpd/normal/pol/tests/graph_test.c b/src/ipcpd/normal/pol/tests/graph_test.c index 87574187..0baba6fc 100644 --- a/src/ipcpd/normal/pol/tests/graph_test.c +++ b/src/ipcpd/normal/pol/tests/graph_test.c @@ -30,80 +30,108 @@ #include "graph.c" -struct graph * graph; -struct routing_table ** table; -ssize_t n_table; -qosspec_t qs; +struct graph * graph; +struct list_head table; +qosspec_t qs; int graph_test_entries(int entries) { - n_table = graph_routing_table(graph, 1, &table); + struct list_head * p; + int i = 0; - if (n_table != entries) { + if (graph_routing_table(graph, 1, &table)) { + printf("Failed to get routing table.\n"); + return -1; + } + + list_for_each(p, &table) { + i++; + } + + if (i != entries) { printf("Wrong number of entries.\n"); - freepp(struct routing_table, table, n_table); + graph_free_routing_table(graph, &table); return -1; } - freepp(struct routing_table, table, n_table); + graph_free_routing_table(graph, &table); return 0; } int graph_test_double_link(void) { - n_table = graph_routing_table(graph, 1, &table); - if (n_table < 0 || table == NULL) { + struct list_head * p; + int i = 0; + + if (graph_routing_table(graph, 1, &table)) { printf("Failed to get routing table.\n"); return -1; } - if (n_table != 2) { - printf("Wrong number of entries.\n"); - freepp(struct routing_table, table, n_table); - return -1; + list_for_each(p, &table) { + i++; } - if ((table[0]->dst != 2 && table[0]->nhop != 2) || - (table[0]->dst != 3 && table[0]->nhop != 2)) { - printf("Wrong routing entry.\n"); - freepp(struct routing_table, table, n_table); + if (i != 2) { + printf("Wrong number of entries.\n"); + graph_free_routing_table(graph, &table); return -1; } - if ((table[1]->dst != 2 && table[1]->nhop != 2) || - (table[0]->dst != 3 && table[0]->nhop != 2)) { - printf("Wrong routing entry.\n"); - freepp(struct routing_table, table, n_table); - return -1; + list_for_each(p, &table) { + struct routing_table * t = + list_entry(p, struct routing_table, next); + struct nhop * n = + list_first_entry(&t->nhops, struct nhop, next); + + if ((t->dst != 2 && n->nhop != 2) || + (t->dst != 3 && n->nhop != 2)) { + printf("Wrong routing entry.\n"); + graph_free_routing_table(graph, &table); + return -1; + } } - freepp(struct routing_table, table, n_table); + graph_free_routing_table(graph, &table); return 0; } int graph_test_single_link(void) { - n_table = graph_routing_table(graph, 1, &table); - if (n_table < 0 || table == NULL) { + struct list_head * p; + int i = 0; + + if (graph_routing_table(graph, 1, &table)) { printf("Failed to get routing table.\n"); return -1; } - if (n_table != 1) { + list_for_each(p, &table) { + i++; + } + + if (i != 1) { printf("Wrong number of entries.\n"); - freepp(struct routing_table, table, n_table); + graph_free_routing_table(graph, &table); return -1; } - if (table[0]->dst != 2 && table[0]->nhop != 2) { - printf("Wrong routing entry.\n"); - freepp(struct routing_table, table, n_table); - return -1; + list_for_each(p, &table) { + struct routing_table * t = + list_entry(p, struct routing_table, next); + struct nhop * n = + list_first_entry(&t->nhops, struct nhop, next); + + if (t->dst != 2 && n->nhop != 2) { + printf("Wrong routing entry.\n"); + graph_free_routing_table(graph, &table); + return -1; + } } - freepp(struct routing_table, table, n_table); + graph_free_routing_table(graph, &table); return 0; } @@ -111,9 +139,9 @@ int graph_test_single_link(void) int graph_test(int argc, char ** argv) { - int i; - int nhop; - int dst; + int nhop; + int dst; + struct list_head * p; (void) argc; (void) argv; @@ -192,50 +220,58 @@ int graph_test(int argc, return -1; } - n_table = graph_routing_table(graph, 1, &table); + if (graph_routing_table(graph, 1, &table)) { + printf("Failed to get routing table.\n"); + return -1; + } + + list_for_each(p, &table) { + struct routing_table * t = + list_entry(p, struct routing_table, next); + struct nhop * n = + list_first_entry(&t->nhops, struct nhop, next); - for (i = 0; i < 6; i++) { - nhop = table[i]->nhop; - dst = table[i]->dst; + dst = t->dst; + nhop = n->nhop; if (dst == 3 && nhop != 3) { printf("Wrong entry."); - freepp(struct routing_table, table, n_table); + graph_free_routing_table(graph, &table); return -1; } if (dst == 2 && nhop != 2) { printf("Wrong entry."); - freepp(struct routing_table, table, n_table); + graph_free_routing_table(graph, &table); return -1; } if (dst == 6 && nhop != 2) { printf("Wrong entry."); - freepp(struct routing_table, table, n_table); + graph_free_routing_table(graph, &table); return -1; } if (dst == 4 && nhop != 3) { printf("Wrong entry."); - freepp(struct routing_table, table, n_table); + graph_free_routing_table(graph, &table); return -1; } if (dst == 5 && nhop != 3) { printf("Wrong entry."); - freepp(struct routing_table, table, n_table); + graph_free_routing_table(graph, &table); return -1; } if (dst == 7 && nhop != 3) { printf("Wrong entry."); - freepp(struct routing_table, table, n_table); + graph_free_routing_table(graph, &table); return -1; } } - freepp(struct routing_table, table, n_table); + graph_free_routing_table(graph, &table); return 0; } -- cgit v1.2.3 From 5d01c511fc1c31fdeee6bb515be0ca300854ba21 Mon Sep 17 00:00:00 2001 From: Sander Vrijders Date: Mon, 25 Sep 2017 17:36:18 +0200 Subject: ipcpd: normal: Add refcount to graph edges This adds a refcount to the graph edges so that it is only included in the calculation if both sides announced it. --- src/ipcpd/normal/pol/graph.c | 34 ++++++++++++++++++++------------ src/ipcpd/normal/pol/link_state.c | 6 +++--- src/ipcpd/normal/pol/tests/graph_test.c | 35 +++++++++++++++++++++++++++------ 3 files changed, 53 insertions(+), 22 deletions(-) (limited to 'src/ipcpd/normal/pol/tests/graph_test.c') diff --git a/src/ipcpd/normal/pol/graph.c b/src/ipcpd/normal/pol/graph.c index 27c5cfca..9e723737 100644 --- a/src/ipcpd/normal/pol/graph.c +++ b/src/ipcpd/normal/pol/graph.c @@ -40,6 +40,7 @@ struct edge { struct list_head next; struct vertex * nb; qosspec_t qs; + int announced; }; struct vertex { @@ -94,6 +95,7 @@ static struct edge * add_edge(struct vertex * vertex, list_head_init(&edge->next); edge->nb = nb; + edge->announced = 0; list_add(&edge->next, &vertex->edges); @@ -251,7 +253,7 @@ int graph_update_edge(struct graph * graph, e = add_edge(v, nb); if (e == NULL) { if (list_is_empty(&v->edges)) - del_vertex(graph, v); + del_vertex(graph, v); if (list_is_empty(&nb->edges)) del_vertex(graph, nb); pthread_mutex_unlock(&graph->lock); @@ -260,13 +262,15 @@ int graph_update_edge(struct graph * graph, } } + e->announced++; e->qs = qs; nb_e = find_edge_by_addr(nb, s_addr); if (nb_e == NULL) { nb_e = add_edge(nb, v); if (nb_e == NULL) { - del_edge(e); + if (--e->announced == 0) + del_edge(e); if (list_is_empty(&v->edges)) del_vertex(graph, v); if (list_is_empty(&nb->edges)) @@ -277,6 +281,7 @@ int graph_update_edge(struct graph * graph, } } + nb_e->announced++; nb_e->qs = qs; pthread_mutex_unlock(&graph->lock); @@ -300,33 +305,35 @@ int graph_del_edge(struct graph * graph, v = find_vertex_by_addr(graph, s_addr); if (v == NULL) { pthread_mutex_unlock(&graph->lock); - log_err("No such vertex."); + log_err("No such source vertex."); return -1; } nb = find_vertex_by_addr(graph, d_addr); if (nb == NULL) { pthread_mutex_unlock(&graph->lock); - log_err("No such vertex."); + log_err("No such destination vertex."); return -1; } e = find_edge_by_addr(v, d_addr); if (e == NULL) { pthread_mutex_unlock(&graph->lock); - log_err("No such edge."); + log_err("No such source edge."); return -1; } nb_e = find_edge_by_addr(nb, s_addr); if (nb_e == NULL) { pthread_mutex_unlock(&graph->lock); - log_err("No such edge."); + log_err("No such destination edge."); return -1; } - del_edge(e); - del_edge(nb_e); + if (--e->announced == 0) + del_edge(e); + if (--nb_e->announced == 0) + del_edge(nb_e); /* Removing vertex if it was the last edge */ if (list_is_empty(&v->edges)) @@ -407,6 +414,10 @@ static struct vertex ** dijkstra(struct graph * graph, list_for_each(p, &v->edges) { e = list_entry(p, struct edge, next); + /* Only include it if both sides announced it. */ + if (e->announced != 2) + continue; + /* * NOTE: Current weight is just hop count. * Method could be extended to use a different @@ -483,10 +494,7 @@ int graph_routing_table(struct graph * graph, list_head_init(table); - /* - * Now loop through the list of predecessors - * to construct the routing table - */ + /* Now construct the routing table from the nhops. */ list_for_each(p, &graph->vertices) { v = list_entry(p, struct vertex, next); @@ -507,7 +515,7 @@ int graph_routing_table(struct graph * graph, goto fail_n; t->dst = v->addr; - n->nhop = nhops[i]->addr; + n->nhop = nhops[i]->addr; list_add(&n->next, &t->nhops); list_add(&t->next, table); diff --git a/src/ipcpd/normal/pol/link_state.c b/src/ipcpd/normal/pol/link_state.c index d45dae15..51d317bc 100644 --- a/src/ipcpd/normal/pol/link_state.c +++ b/src/ipcpd/normal/pol/link_state.c @@ -379,12 +379,11 @@ static int nbr_to_fd(uint64_t addr) static void * calculate_pff(void * o) { struct routing_i * instance; - int i = 0; int fd; struct list_head table; struct list_head * p; struct list_head * q; - int fds[1024]; + int fds[AP_MAX_FLOWS]; instance = (struct routing_i *) o; @@ -399,6 +398,7 @@ static void * calculate_pff(void * o) pff_flush(instance->pff); list_for_each(p, &table) { + int i = 0; struct routing_table * t = list_entry(p, struct routing_table, next); @@ -475,7 +475,7 @@ static void * lsupdate(void * o) adj->src, adj->dst); if (graph_del_edge(ls.graph, adj->src, adj->dst)) - log_dbg("Failed to delete edge."); + log_err("Failed to del edge."); free(adj); continue; } diff --git a/src/ipcpd/normal/pol/tests/graph_test.c b/src/ipcpd/normal/pol/tests/graph_test.c index 0baba6fc..42cf3f06 100644 --- a/src/ipcpd/normal/pol/tests/graph_test.c +++ b/src/ipcpd/normal/pol/tests/graph_test.c @@ -44,9 +44,8 @@ int graph_test_entries(int entries) return -1; } - list_for_each(p, &table) { + list_for_each(p, &table) i++; - } if (i != entries) { printf("Wrong number of entries.\n"); @@ -69,9 +68,8 @@ int graph_test_double_link(void) return -1; } - list_for_each(p, &table) { + list_for_each(p, &table) i++; - } if (i != 2) { printf("Wrong number of entries.\n"); @@ -108,9 +106,8 @@ int graph_test_single_link(void) return -1; } - list_for_each(p, &table) { + list_for_each(p, &table) i++; - } if (i != 1) { printf("Wrong number of entries.\n"); @@ -168,6 +165,12 @@ int graph_test(int argc, return -1; } + if (graph_update_edge(graph, 2, 1, qs)) { + printf("Failed to add edge.\n"); + graph_destroy(graph); + return -1; + } + if (graph_test_single_link()) { graph_destroy(graph); return -1; @@ -179,6 +182,13 @@ int graph_test(int argc, return -1; } + if (graph_update_edge(graph, 3, 2, qs)) { + printf("Failed to add edge.\n"); + graph_destroy(graph); + return -1; + } + + if (graph_test_double_link()) { graph_destroy(graph); return -1; @@ -190,13 +200,21 @@ int graph_test(int argc, return -1; } + if (graph_del_edge(graph, 3, 2)) { + printf("Failed to delete edge.\n"); + graph_destroy(graph); + return -1; + } + if (graph_test_single_link()) { graph_destroy(graph); return -1; } graph_update_edge(graph, 2, 3, qs); + graph_update_edge(graph, 3, 2, qs); graph_update_edge(graph, 1, 3, qs); + graph_update_edge(graph, 3, 1, qs); if (graph_test_entries(2)) { graph_destroy(graph); @@ -204,7 +222,9 @@ int graph_test(int argc, } graph_update_edge(graph, 3, 4, qs); + graph_update_edge(graph, 4, 3, qs); graph_update_edge(graph, 4, 5, qs); + graph_update_edge(graph, 5, 4, qs); if (graph_test_entries(4)) { graph_destroy(graph); @@ -212,8 +232,11 @@ int graph_test(int argc, } graph_update_edge(graph, 2, 6, qs); + graph_update_edge(graph, 6, 2, qs); graph_update_edge(graph, 6, 7, qs); + graph_update_edge(graph, 7, 6, qs); graph_update_edge(graph, 3, 7, qs); + graph_update_edge(graph, 7, 3, qs); if (graph_test_entries(6)) { graph_destroy(graph); -- cgit v1.2.3