123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140 |
- /*
- PIM for Quagga
- Copyright (C) 2008 Everton da Silva Marques
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; see the file COPYING; if not, write to the
- Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- MA 02110-1301 USA
-
- $QuaggaId: $Format:%an, %ai, %h$ $
- */
- #include <zebra.h>
- #include "log.h"
- #include "memory.h"
- #include "linklist.h"
- #include "pimd.h"
- #include "pim_oil.h"
- #include "pim_str.h"
- #include "pim_iface.h"
- void pim_channel_oil_free(struct channel_oil *c_oil)
- {
- XFREE(MTYPE_PIM_CHANNEL_OIL, c_oil);
- }
- static void pim_channel_oil_delete(struct channel_oil *c_oil)
- {
- /*
- notice that listnode_delete() can't be moved
- into pim_channel_oil_free() because the later is
- called by list_delete_all_node()
- */
- listnode_delete(qpim_channel_oil_list, c_oil);
- pim_channel_oil_free(c_oil);
- }
- static struct channel_oil *channel_oil_new(struct in_addr group_addr,
- struct in_addr source_addr,
- int input_vif_index)
- {
- struct channel_oil *c_oil;
- struct interface *ifp_in;
- ifp_in = pim_if_find_by_vif_index(input_vif_index);
- if (!ifp_in) {
- /* warning only */
- char group_str[100];
- char source_str[100];
- pim_inet4_dump("<group?>", group_addr, group_str, sizeof(group_str));
- pim_inet4_dump("<source?>", source_addr, source_str, sizeof(source_str));
- zlog_warn("%s: (S,G)=(%s,%s) could not find input interface for input_vif_index=%d",
- __PRETTY_FUNCTION__,
- source_str, group_str, input_vif_index);
- }
- c_oil = XCALLOC(MTYPE_PIM_CHANNEL_OIL, sizeof(*c_oil));
- if (!c_oil) {
- zlog_err("PIM XCALLOC(%zu) failure", sizeof(*c_oil));
- return 0;
- }
- c_oil->oil.mfcc_mcastgrp = group_addr;
- c_oil->oil.mfcc_origin = source_addr;
- c_oil->oil.mfcc_parent = input_vif_index;
- c_oil->oil_ref_count = 1;
- zassert(c_oil->oil_size == 0);
- return c_oil;
- }
- static struct channel_oil *pim_add_channel_oil(struct in_addr group_addr,
- struct in_addr source_addr,
- int input_vif_index)
- {
- struct channel_oil *c_oil;
- c_oil = channel_oil_new(group_addr, source_addr, input_vif_index);
- if (!c_oil) {
- zlog_warn("PIM XCALLOC(%zu) failure", sizeof(*c_oil));
- return 0;
- }
- listnode_add(qpim_channel_oil_list, c_oil);
- return c_oil;
- }
- static struct channel_oil *pim_find_channel_oil(struct in_addr group_addr,
- struct in_addr source_addr)
- {
- struct listnode *node;
- struct channel_oil *c_oil;
- for (ALL_LIST_ELEMENTS_RO(qpim_channel_oil_list, node, c_oil)) {
- if ((group_addr.s_addr == c_oil->oil.mfcc_mcastgrp.s_addr) &&
- (source_addr.s_addr == c_oil->oil.mfcc_origin.s_addr))
- return c_oil;
- }
-
- return 0;
- }
- struct channel_oil *pim_channel_oil_add(struct in_addr group_addr,
- struct in_addr source_addr,
- int input_vif_index)
- {
- struct channel_oil *c_oil;
- c_oil = pim_find_channel_oil(group_addr, source_addr);
- if (c_oil) {
- ++c_oil->oil_ref_count;
- return c_oil;
- }
- return pim_add_channel_oil(group_addr, source_addr, input_vif_index);
- }
- void pim_channel_oil_del(struct channel_oil *c_oil)
- {
- --c_oil->oil_ref_count;
- if (c_oil->oil_ref_count < 1) {
- pim_channel_oil_delete(c_oil);
- }
- }
|