diff options
Diffstat (limited to 'src/plugins/acl/hash_lookup.c')
| -rw-r--r-- | src/plugins/acl/hash_lookup.c | 77 |
1 files changed, 73 insertions, 4 deletions
diff --git a/src/plugins/acl/hash_lookup.c b/src/plugins/acl/hash_lookup.c index 9a9a1ff67ec..6b14612b49d 100644 --- a/src/plugins/acl/hash_lookup.c +++ b/src/plugins/acl/hash_lookup.c @@ -464,24 +464,46 @@ static void vec_del_collision_rule (collision_match_rule_t ** pvec, u32 applied_entry_index) { - u32 i; - for (i = 0; i < vec_len ((*pvec)); i++) + u32 i = 0; + u32 deleted = 0; + while (i < _vec_len ((*pvec))) { collision_match_rule_t *cr = vec_elt_at_index ((*pvec), i); if (cr->applied_entry_index == applied_entry_index) { - vec_del1 ((*pvec), i); + /* vec_del1 ((*pvec), i) would be more efficient but would reorder the elements. */ + vec_delete((*pvec), 1, i); + deleted++; + DBG0("vec_del_collision_rule deleting one at index %d", i); + } + else + { + i++; } } + ASSERT(deleted > 0); } static void +acl_plugin_print_pae (vlib_main_t * vm, int j, applied_hash_ace_entry_t * pae); + +static void del_colliding_rule (applied_hash_ace_entry_t ** applied_hash_aces, u32 head_index, u32 applied_entry_index) { + DBG0("DEL COLLIDING RULE: head_index %d applied index %d", head_index, applied_entry_index); + + applied_hash_ace_entry_t *head_pae = vec_elt_at_index ((*applied_hash_aces), head_index); + if (ACL_HASH_LOOKUP_DEBUG > 0) + acl_plugin_print_pae(acl_main.vlib_main, head_index, head_pae); vec_del_collision_rule (&head_pae->colliding_rules, applied_entry_index); + if (vec_len(head_pae->colliding_rules) == 0) { + vec_free(head_pae->colliding_rules); + } + if (ACL_HASH_LOOKUP_DEBUG > 0) + acl_plugin_print_pae(acl_main.vlib_main, head_index, head_pae); } static void @@ -493,6 +515,9 @@ add_colliding_rule (acl_main_t * am, vec_elt_at_index ((*applied_hash_aces), head_index); applied_hash_ace_entry_t *pae = vec_elt_at_index ((*applied_hash_aces), applied_entry_index); + DBG0("ADD COLLIDING RULE: head_index %d applied index %d", head_index, applied_entry_index); + if (ACL_HASH_LOOKUP_DEBUG > 0) + acl_plugin_print_pae(acl_main.vlib_main, head_index, head_pae); collision_match_rule_t cr; @@ -502,6 +527,8 @@ add_colliding_rule (acl_main_t * am, cr.applied_entry_index = applied_entry_index; cr.rule = am->acls[pae->acl_index].rules[pae->ace_index]; vec_add1 (head_pae->colliding_rules, cr); + if (ACL_HASH_LOOKUP_DEBUG > 0) + acl_plugin_print_pae(acl_main.vlib_main, head_index, head_pae); } static u32 @@ -749,6 +776,17 @@ move_applied_ace_hash_entry(acl_main_t *am, /* update the linkage and hash table if necessary */ applied_hash_ace_entry_t *pae = vec_elt_at_index((*applied_hash_aces), old_index); + applied_hash_ace_entry_t *new_pae = vec_elt_at_index((*applied_hash_aces), new_index); + + if (ACL_HASH_LOOKUP_DEBUG > 0) { + clib_warning("Moving pae from %d to %d", old_index, new_index); + acl_plugin_print_pae(am->vlib_main, old_index, pae); + } + + if (new_pae->tail_applied_entry_index == old_index) { + /* fix-up the tail index if we are the tail and the start */ + new_pae->tail_applied_entry_index = new_index; + } if (pae->prev_applied_entry_index != ~0) { applied_hash_ace_entry_t *prev_pae = vec_elt_at_index((*applied_hash_aces), pae->prev_applied_entry_index); @@ -775,10 +813,35 @@ move_applied_ace_hash_entry(acl_main_t *am, ASSERT(head_pae->tail_applied_entry_index == old_index); head_pae->tail_applied_entry_index = new_index; } + if (new_pae->colliding_rules) { + /* update the information within the collision rule entry */ + ASSERT(vec_len(new_pae->colliding_rules) > 0); + collision_match_rule_t *cr = vec_elt_at_index (new_pae->colliding_rules, 0); + ASSERT(cr->applied_entry_index == old_index); + cr->applied_entry_index = new_index; + } else { + /* find the index in the collision rule entry on the head element */ + u32 head_index = find_head_applied_ace_index(applied_hash_aces, new_index); + ASSERT(head_index != ~0); + applied_hash_ace_entry_t *head_pae = vec_elt_at_index((*applied_hash_aces), head_index); + ASSERT(vec_len(head_pae->colliding_rules) > 0); + u32 i; + for (i=0; i<vec_len(head_pae->colliding_rules); i++) { + collision_match_rule_t *cr = vec_elt_at_index (head_pae->colliding_rules, i); + if (cr->applied_entry_index == old_index) { + cr->applied_entry_index = new_index; + } + } + if (ACL_HASH_LOOKUP_DEBUG > 0) { + clib_warning("Head pae at index %d after adjustment", head_index); + acl_plugin_print_pae(am->vlib_main, head_index, head_pae); + } + } /* invalidate the old entry */ pae->prev_applied_entry_index = ~0; pae->next_applied_entry_index = ~0; pae->tail_applied_entry_index = ~0; + pae->colliding_rules = NULL; } static void @@ -811,13 +874,14 @@ deactivate_applied_ace_hash_entry(acl_main_t *am, } } else { /* It was the first entry. We need either to reset the hash entry or delete it */ + /* delete our entry from the collision vector first */ + del_colliding_rule(applied_hash_aces, old_index, old_index); if (pae->next_applied_entry_index != ~0) { /* the next element becomes the new first one, so needs the tail pointer to be set */ applied_hash_ace_entry_t *next_pae = vec_elt_at_index((*applied_hash_aces), pae->next_applied_entry_index); ASSERT(pae->tail_applied_entry_index != ~0); next_pae->tail_applied_entry_index = pae->tail_applied_entry_index; /* Remove ourselves and transfer the ownership of the colliding rules vector */ - del_colliding_rule(applied_hash_aces, old_index, old_index); next_pae->colliding_rules = pae->colliding_rules; /* unlink from the next element */ next_pae->prev_applied_entry_index = ~0; @@ -905,6 +969,10 @@ hash_acl_unapply(acl_main_t *am, u32 lc_index, int acl_index) remake_hash_applied_mask_info_vec(am, applied_hash_aces, lc_index); + if (vec_len((*applied_hash_aces)) == 0) { + vec_free((*applied_hash_aces)); + } + clib_mem_set_heap (oldheap); } @@ -1123,6 +1191,7 @@ void hash_acl_delete(acl_main_t *am, int acl_index) } vec_free(lc_list_copy); } + vec_free(ha->lc_index_list); /* walk the mask types for the ACL about-to-be-deleted, and decrease * the reference count, possibly freeing up some of them */ |