[pim] Initial pim 0.155
diff --git a/pimd/pim_oil.c b/pimd/pim_oil.c
new file mode 100644
index 0000000..2c8b056
--- /dev/null
+++ b/pimd/pim_oil.c
@@ -0,0 +1,140 @@
+/*
+ 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(%d) 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(%d) 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);
+ }
+}