/*
- 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
-*/
+ * 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
+ */
#include <zebra.h>
#include "pim_neighbor.h"
#include "pim_upstream.h"
-static void on_trace(const char *label,
- struct interface *ifp, struct in_addr src)
+static void on_trace(const char *label, struct interface *ifp,
+ struct in_addr src)
{
- if (PIM_DEBUG_PIM_TRACE) {
- char src_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<src?>", src, src_str, sizeof(src_str));
- zlog_debug("%s: from %s on %s",
- label, src_str, ifp->name);
- }
+ if (PIM_DEBUG_PIM_TRACE) {
+ char src_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<src?>", src, src_str, sizeof(src_str));
+ zlog_debug("%s: from %s on %s", label, src_str, ifp->name);
+ }
}
static void tlv_trace_bool(const char *label, const char *tlv_name,
const char *ifname, struct in_addr src_addr,
int isset, int value)
{
- if (isset) {
- char src_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
- zlog_debug("%s: PIM hello option from %s on interface %s: %s=%d",
- label,
- src_str, ifname,
- tlv_name, value);
- }
+ if (isset) {
+ char src_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
+ zlog_debug(
+ "%s: PIM hello option from %s on interface %s: %s=%d",
+ label, src_str, ifname, tlv_name, value);
+ }
}
static void tlv_trace_uint16(const char *label, const char *tlv_name,
const char *ifname, struct in_addr src_addr,
int isset, uint16_t value)
{
- if (isset) {
- char src_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
- zlog_debug("%s: PIM hello option from %s on interface %s: %s=%u",
- label,
- src_str, ifname,
- tlv_name, value);
- }
+ if (isset) {
+ char src_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
+ zlog_debug(
+ "%s: PIM hello option from %s on interface %s: %s=%u",
+ label, src_str, ifname, tlv_name, value);
+ }
}
static void tlv_trace_uint32(const char *label, const char *tlv_name,
const char *ifname, struct in_addr src_addr,
int isset, uint32_t value)
{
- if (isset) {
- char src_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
- zlog_debug("%s: PIM hello option from %s on interface %s: %s=%u",
- label,
- src_str, ifname,
- tlv_name, value);
- }
+ if (isset) {
+ char src_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
+ zlog_debug(
+ "%s: PIM hello option from %s on interface %s: %s=%u",
+ label, src_str, ifname, tlv_name, value);
+ }
}
static void tlv_trace_uint32_hex(const char *label, const char *tlv_name,
const char *ifname, struct in_addr src_addr,
int isset, uint32_t value)
{
- if (isset) {
- char src_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
- zlog_debug("%s: PIM hello option from %s on interface %s: %s=%08x",
- label,
- src_str, ifname,
- tlv_name, value);
- }
+ if (isset) {
+ char src_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
+ zlog_debug(
+ "%s: PIM hello option from %s on interface %s: %s=%08x",
+ label, src_str, ifname, tlv_name, value);
+ }
}
#if 0
const char *ifname, struct in_addr src_addr,
int isset, struct list *addr_list)
{
- if (isset) {
- char src_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
- zlog_debug("%s: PIM hello option from %s on interface %s: %s size=%d list=%p",
- label,
- src_str, ifname,
- tlv_name,
- addr_list ? ((int) listcount(addr_list)) : -1,
- (void *) addr_list);
- }
+ if (isset) {
+ char src_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
+ zlog_debug(
+ "%s: PIM hello option from %s on interface %s: %s size=%d list=%p",
+ label, src_str, ifname, tlv_name,
+ addr_list ? ((int)listcount(addr_list)) : -1,
+ (void *)addr_list);
+ }
}
-#define FREE_ADDR_LIST \
- if (hello_option_addr_list) { \
- list_delete(hello_option_addr_list); \
- }
+#define FREE_ADDR_LIST \
+ if (hello_option_addr_list) { \
+ list_delete(&hello_option_addr_list); \
+ }
-#define FREE_ADDR_LIST_THEN_RETURN(code) \
-{ \
- FREE_ADDR_LIST \
- return (code); \
-}
+#define FREE_ADDR_LIST_THEN_RETURN(code) \
+ { \
+ FREE_ADDR_LIST \
+ return (code); \
+ }
-int pim_hello_recv(struct interface *ifp,
- struct in_addr src_addr,
+int pim_hello_recv(struct interface *ifp, struct in_addr src_addr,
uint8_t *tlv_buf, int tlv_buf_size)
{
- struct pim_interface *pim_ifp;
- struct pim_neighbor *neigh;
- uint8_t *tlv_curr;
- uint8_t *tlv_pastend;
- pim_hello_options hello_options = 0; /* bit array recording options found */
- uint16_t hello_option_holdtime = 0;
- uint16_t hello_option_propagation_delay = 0;
- uint16_t hello_option_override_interval = 0;
- uint32_t hello_option_dr_priority = 0;
- uint32_t hello_option_generation_id = 0;
- struct list *hello_option_addr_list = 0;
-
- if (PIM_DEBUG_PIM_HELLO)
- on_trace(__PRETTY_FUNCTION__, ifp, src_addr);
-
- pim_ifp = ifp->info;
- zassert(pim_ifp);
-
- ++pim_ifp->pim_ifstat_hello_recv;
-
- /*
- Parse PIM hello TLVs
- */
- zassert(tlv_buf_size >= 0);
- tlv_curr = tlv_buf;
- tlv_pastend = tlv_buf + tlv_buf_size;
-
- while (tlv_curr < tlv_pastend) {
- uint16_t option_type;
- uint16_t option_len;
- int remain = tlv_pastend - tlv_curr;
-
- if (remain < PIM_TLV_MIN_SIZE) {
- if (PIM_DEBUG_PIM_HELLO) {
- char src_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
- zlog_debug("%s: short PIM hello TLV size=%d < min=%d from %s on interface %s",
- __PRETTY_FUNCTION__,
- remain, PIM_TLV_MIN_SIZE,
- src_str, ifp->name);
- }
- FREE_ADDR_LIST_THEN_RETURN(-1);
- }
-
- option_type = PIM_TLV_GET_TYPE(tlv_curr);
- tlv_curr += PIM_TLV_TYPE_SIZE;
- option_len = PIM_TLV_GET_LENGTH(tlv_curr);
- tlv_curr += PIM_TLV_LENGTH_SIZE;
-
- if ((tlv_curr + option_len) > tlv_pastend) {
- if (PIM_DEBUG_PIM_HELLO) {
- char src_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
- zlog_debug("%s: long PIM hello TLV type=%d length=%d > left=%td from %s on interface %s",
- __PRETTY_FUNCTION__,
- option_type, option_len, tlv_pastend - tlv_curr,
- src_str, ifp->name);
- }
- FREE_ADDR_LIST_THEN_RETURN(-2);
- }
-
- if (PIM_DEBUG_PIM_HELLO) {
- char src_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
- zlog_debug("%s: parse left_size=%d: PIM hello TLV type=%d length=%d from %s on %s",
- __PRETTY_FUNCTION__,
- remain,
- option_type, option_len,
- src_str, ifp->name);
- }
-
- switch (option_type) {
- case PIM_MSG_OPTION_TYPE_HOLDTIME:
- if (pim_tlv_parse_holdtime(ifp->name, src_addr,
- &hello_options,
- &hello_option_holdtime,
- option_len,
- tlv_curr)) {
- FREE_ADDR_LIST_THEN_RETURN(-3);
- }
- break;
- case PIM_MSG_OPTION_TYPE_LAN_PRUNE_DELAY:
- if (pim_tlv_parse_lan_prune_delay(ifp->name, src_addr,
- &hello_options,
- &hello_option_propagation_delay,
- &hello_option_override_interval,
- option_len,
- tlv_curr)) {
- FREE_ADDR_LIST_THEN_RETURN(-4);
- }
- break;
- case PIM_MSG_OPTION_TYPE_DR_PRIORITY:
- if (pim_tlv_parse_dr_priority(ifp->name, src_addr,
- &hello_options,
- &hello_option_dr_priority,
- option_len,
+ struct pim_interface *pim_ifp;
+ struct pim_neighbor *neigh;
+ uint8_t *tlv_curr;
+ uint8_t *tlv_pastend;
+ pim_hello_options hello_options =
+ 0; /* bit array recording options found */
+ uint16_t hello_option_holdtime = 0;
+ uint16_t hello_option_propagation_delay = 0;
+ uint16_t hello_option_override_interval = 0;
+ uint32_t hello_option_dr_priority = 0;
+ uint32_t hello_option_generation_id = 0;
+ struct list *hello_option_addr_list = 0;
+
+ if (PIM_DEBUG_PIM_HELLO)
+ on_trace(__PRETTY_FUNCTION__, ifp, src_addr);
+
+ pim_ifp = ifp->info;
+ zassert(pim_ifp);
+
+ ++pim_ifp->pim_ifstat_hello_recv;
+
+ /*
+ Parse PIM hello TLVs
+ */
+ zassert(tlv_buf_size >= 0);
+ tlv_curr = tlv_buf;
+ tlv_pastend = tlv_buf + tlv_buf_size;
+
+ while (tlv_curr < tlv_pastend) {
+ uint16_t option_type;
+ uint16_t option_len;
+ int remain = tlv_pastend - tlv_curr;
+
+ if (remain < PIM_TLV_MIN_SIZE) {
+ if (PIM_DEBUG_PIM_HELLO) {
+ char src_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<src?>", src_addr, src_str,
+ sizeof(src_str));
+ zlog_debug(
+ "%s: short PIM hello TLV size=%d < min=%d from %s on interface %s",
+ __PRETTY_FUNCTION__, remain,
+ PIM_TLV_MIN_SIZE, src_str, ifp->name);
+ }
+ FREE_ADDR_LIST_THEN_RETURN(-1);
+ }
+
+ option_type = PIM_TLV_GET_TYPE(tlv_curr);
+ tlv_curr += PIM_TLV_TYPE_SIZE;
+ option_len = PIM_TLV_GET_LENGTH(tlv_curr);
+ tlv_curr += PIM_TLV_LENGTH_SIZE;
+
+ if ((tlv_curr + option_len) > tlv_pastend) {
+ if (PIM_DEBUG_PIM_HELLO) {
+ char src_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<src?>", src_addr, src_str,
+ sizeof(src_str));
+ zlog_debug(
+ "%s: long PIM hello TLV type=%d length=%d > left=%td from %s on interface %s",
+ __PRETTY_FUNCTION__, option_type,
+ option_len, tlv_pastend - tlv_curr,
+ src_str, ifp->name);
+ }
+ FREE_ADDR_LIST_THEN_RETURN(-2);
+ }
+
+ if (PIM_DEBUG_PIM_HELLO) {
+ char src_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<src?>", src_addr, src_str,
+ sizeof(src_str));
+ zlog_debug(
+ "%s: parse left_size=%d: PIM hello TLV type=%d length=%d from %s on %s",
+ __PRETTY_FUNCTION__, remain, option_type,
+ option_len, src_str, ifp->name);
+ }
+
+ switch (option_type) {
+ case PIM_MSG_OPTION_TYPE_HOLDTIME:
+ if (pim_tlv_parse_holdtime(ifp->name, src_addr,
+ &hello_options,
+ &hello_option_holdtime,
+ option_len, tlv_curr)) {
+ FREE_ADDR_LIST_THEN_RETURN(-3);
+ }
+ break;
+ case PIM_MSG_OPTION_TYPE_LAN_PRUNE_DELAY:
+ if (pim_tlv_parse_lan_prune_delay(
+ ifp->name, src_addr, &hello_options,
+ &hello_option_propagation_delay,
+ &hello_option_override_interval, option_len,
tlv_curr)) {
- FREE_ADDR_LIST_THEN_RETURN(-5);
- }
- break;
- case PIM_MSG_OPTION_TYPE_GENERATION_ID:
- if (pim_tlv_parse_generation_id(ifp->name, src_addr,
- &hello_options,
- &hello_option_generation_id,
- option_len,
- tlv_curr)) {
- FREE_ADDR_LIST_THEN_RETURN(-6);
- }
- break;
- case PIM_MSG_OPTION_TYPE_ADDRESS_LIST:
- if (pim_tlv_parse_addr_list(ifp->name, src_addr,
- &hello_options,
- &hello_option_addr_list,
- option_len,
- tlv_curr)) {
- return -7;
- }
- break;
- case PIM_MSG_OPTION_TYPE_DM_STATE_REFRESH:
- if (PIM_DEBUG_PIM_HELLO) {
- char src_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
- zlog_debug("%s: ignoring PIM hello dense-mode state refresh TLV option type=%d length=%d from %s on interface %s",
- __PRETTY_FUNCTION__,
- option_type, option_len,
- src_str, ifp->name);
- }
- break;
- default:
- if (PIM_DEBUG_PIM_HELLO) {
- char src_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
- zlog_debug("%s: ignoring unknown PIM hello TLV type=%d length=%d from %s on interface %s",
- __PRETTY_FUNCTION__,
- option_type, option_len,
- src_str, ifp->name);
- }
- }
-
- tlv_curr += option_len;
- }
+ FREE_ADDR_LIST_THEN_RETURN(-4);
+ }
+ break;
+ case PIM_MSG_OPTION_TYPE_DR_PRIORITY:
+ if (pim_tlv_parse_dr_priority(ifp->name, src_addr,
+ &hello_options,
+ &hello_option_dr_priority,
+ option_len, tlv_curr)) {
+ FREE_ADDR_LIST_THEN_RETURN(-5);
+ }
+ break;
+ case PIM_MSG_OPTION_TYPE_GENERATION_ID:
+ if (pim_tlv_parse_generation_id(
+ ifp->name, src_addr, &hello_options,
+ &hello_option_generation_id, option_len,
+ tlv_curr)) {
+ FREE_ADDR_LIST_THEN_RETURN(-6);
+ }
+ break;
+ case PIM_MSG_OPTION_TYPE_ADDRESS_LIST:
+ if (pim_tlv_parse_addr_list(ifp->name, src_addr,
+ &hello_options,
+ &hello_option_addr_list,
+ option_len, tlv_curr)) {
+ return -7;
+ }
+ break;
+ case PIM_MSG_OPTION_TYPE_DM_STATE_REFRESH:
+ if (PIM_DEBUG_PIM_HELLO) {
+ char src_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<src?>", src_addr, src_str,
+ sizeof(src_str));
+ zlog_debug(
+ "%s: ignoring PIM hello dense-mode state refresh TLV option type=%d length=%d from %s on interface %s",
+ __PRETTY_FUNCTION__, option_type,
+ option_len, src_str, ifp->name);
+ }
+ break;
+ default:
+ if (PIM_DEBUG_PIM_HELLO) {
+ char src_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<src?>", src_addr, src_str,
+ sizeof(src_str));
+ zlog_debug(
+ "%s: ignoring unknown PIM hello TLV type=%d length=%d from %s on interface %s",
+ __PRETTY_FUNCTION__, option_type,
+ option_len, src_str, ifp->name);
+ }
+ }
+
+ tlv_curr += option_len;
+ }
- /*
- Check received PIM hello options
- */
-
- if (PIM_DEBUG_PIM_HELLO) {
- tlv_trace_uint16(__PRETTY_FUNCTION__, "holdtime",
- ifp->name, src_addr,
- PIM_OPTION_IS_SET(hello_options, PIM_OPTION_MASK_HOLDTIME),
- hello_option_holdtime);
- tlv_trace_uint16(__PRETTY_FUNCTION__, "propagation_delay",
- ifp->name, src_addr,
- PIM_OPTION_IS_SET(hello_options, PIM_OPTION_MASK_LAN_PRUNE_DELAY),
- hello_option_propagation_delay);
- tlv_trace_uint16(__PRETTY_FUNCTION__, "override_interval",
- ifp->name, src_addr,
- PIM_OPTION_IS_SET(hello_options, PIM_OPTION_MASK_LAN_PRUNE_DELAY),
- hello_option_override_interval);
- tlv_trace_bool(__PRETTY_FUNCTION__, "can_disable_join_suppression",
- ifp->name, src_addr,
- PIM_OPTION_IS_SET(hello_options, PIM_OPTION_MASK_LAN_PRUNE_DELAY),
- PIM_OPTION_IS_SET(hello_options, PIM_OPTION_MASK_CAN_DISABLE_JOIN_SUPPRESSION));
- tlv_trace_uint32(__PRETTY_FUNCTION__, "dr_priority",
- ifp->name, src_addr,
- PIM_OPTION_IS_SET(hello_options, PIM_OPTION_MASK_DR_PRIORITY),
- hello_option_dr_priority);
- tlv_trace_uint32_hex(__PRETTY_FUNCTION__, "generation_id",
- ifp->name, src_addr,
- PIM_OPTION_IS_SET(hello_options, PIM_OPTION_MASK_GENERATION_ID),
- hello_option_generation_id);
- tlv_trace_list(__PRETTY_FUNCTION__, "address_list",
- ifp->name, src_addr,
- PIM_OPTION_IS_SET(hello_options, PIM_OPTION_MASK_ADDRESS_LIST),
- hello_option_addr_list);
- }
+ /*
+ Check received PIM hello options
+ */
- if (!PIM_OPTION_IS_SET(hello_options, PIM_OPTION_MASK_HOLDTIME)) {
- if (PIM_DEBUG_PIM_HELLO) {
- char src_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
- zlog_debug("%s: PIM hello missing holdtime from %s on interface %s",
- __PRETTY_FUNCTION__,
- src_str, ifp->name);
- }
- }
+ if (PIM_DEBUG_PIM_HELLO) {
+ tlv_trace_uint16(__PRETTY_FUNCTION__, "holdtime", ifp->name,
+ src_addr,
+ PIM_OPTION_IS_SET(hello_options,
+ PIM_OPTION_MASK_HOLDTIME),
+ hello_option_holdtime);
+ tlv_trace_uint16(
+ __PRETTY_FUNCTION__, "propagation_delay", ifp->name,
+ src_addr,
+ PIM_OPTION_IS_SET(hello_options,
+ PIM_OPTION_MASK_LAN_PRUNE_DELAY),
+ hello_option_propagation_delay);
+ tlv_trace_uint16(
+ __PRETTY_FUNCTION__, "override_interval", ifp->name,
+ src_addr,
+ PIM_OPTION_IS_SET(hello_options,
+ PIM_OPTION_MASK_LAN_PRUNE_DELAY),
+ hello_option_override_interval);
+ tlv_trace_bool(
+ __PRETTY_FUNCTION__, "can_disable_join_suppression",
+ ifp->name, src_addr,
+ PIM_OPTION_IS_SET(hello_options,
+ PIM_OPTION_MASK_LAN_PRUNE_DELAY),
+ PIM_OPTION_IS_SET(
+ hello_options,
+ PIM_OPTION_MASK_CAN_DISABLE_JOIN_SUPPRESSION));
+ tlv_trace_uint32(__PRETTY_FUNCTION__, "dr_priority", ifp->name,
+ src_addr,
+ PIM_OPTION_IS_SET(hello_options,
+ PIM_OPTION_MASK_DR_PRIORITY),
+ hello_option_dr_priority);
+ tlv_trace_uint32_hex(
+ __PRETTY_FUNCTION__, "generation_id", ifp->name,
+ src_addr,
+ PIM_OPTION_IS_SET(hello_options,
+ PIM_OPTION_MASK_GENERATION_ID),
+ hello_option_generation_id);
+ tlv_trace_list(__PRETTY_FUNCTION__, "address_list", ifp->name,
+ src_addr,
+ PIM_OPTION_IS_SET(hello_options,
+ PIM_OPTION_MASK_ADDRESS_LIST),
+ hello_option_addr_list);
+ }
- /*
- New neighbor?
- */
-
- neigh = pim_neighbor_find(ifp, src_addr);
- if (!neigh) {
- /* Add as new neighbor */
-
- neigh = pim_neighbor_add(ifp, src_addr,
- hello_options,
- hello_option_holdtime,
- hello_option_propagation_delay,
- hello_option_override_interval,
- hello_option_dr_priority,
- hello_option_generation_id,
- hello_option_addr_list,
- PIM_NEIGHBOR_SEND_DELAY);
- if (!neigh) {
- if (PIM_DEBUG_PIM_HELLO) {
- char src_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
- zlog_warn("%s: failure creating PIM neighbor %s on interface %s",
- __PRETTY_FUNCTION__,
- src_str, ifp->name);
- }
- FREE_ADDR_LIST_THEN_RETURN(-8);
- }
-
- /* actual addr list has been saved under neighbor */
- return 0;
- }
+ if (!PIM_OPTION_IS_SET(hello_options, PIM_OPTION_MASK_HOLDTIME)) {
+ if (PIM_DEBUG_PIM_HELLO) {
+ char src_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<src?>", src_addr, src_str,
+ sizeof(src_str));
+ zlog_debug(
+ "%s: PIM hello missing holdtime from %s on interface %s",
+ __PRETTY_FUNCTION__, src_str, ifp->name);
+ }
+ }
- /*
- Received generation ID ?
- */
-
- if (PIM_OPTION_IS_SET(hello_options, PIM_OPTION_MASK_GENERATION_ID)) {
- /* GenID mismatch ? */
- if (!PIM_OPTION_IS_SET(neigh->hello_options, PIM_OPTION_MASK_GENERATION_ID) ||
- (hello_option_generation_id != neigh->generation_id)) {
- /* GenID mismatch, then replace neighbor */
-
- if (PIM_DEBUG_PIM_HELLO) {
- char src_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
- zlog_debug("%s: GenId mismatch new=%08x old=%08x: replacing neighbor %s on %s",
- __PRETTY_FUNCTION__,
- hello_option_generation_id,
- neigh->generation_id,
- src_str, ifp->name);
- }
-
- pim_upstream_rpf_genid_changed(neigh->source_addr);
-
- pim_neighbor_delete(ifp, neigh, "GenID mismatch");
- neigh = pim_neighbor_add(ifp, src_addr,
- hello_options,
- hello_option_holdtime,
- hello_option_propagation_delay,
- hello_option_override_interval,
- hello_option_dr_priority,
- hello_option_generation_id,
- hello_option_addr_list,
- PIM_NEIGHBOR_SEND_NOW);
- if (!neigh) {
- if (PIM_DEBUG_PIM_HELLO) {
- char src_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
- zlog_debug("%s: failure re-creating PIM neighbor %s on interface %s",
- __PRETTY_FUNCTION__,
- src_str, ifp->name);
+ /*
+ New neighbor?
+ */
+
+ neigh = pim_neighbor_find(ifp, src_addr);
+ if (!neigh) {
+ /* Add as new neighbor */
+
+ neigh = pim_neighbor_add(
+ ifp, src_addr, hello_options, hello_option_holdtime,
+ hello_option_propagation_delay,
+ hello_option_override_interval,
+ hello_option_dr_priority, hello_option_generation_id,
+ hello_option_addr_list, PIM_NEIGHBOR_SEND_DELAY);
+ if (!neigh) {
+ if (PIM_DEBUG_PIM_HELLO) {
+ char src_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<src?>", src_addr, src_str,
+ sizeof(src_str));
+ zlog_warn(
+ "%s: failure creating PIM neighbor %s on interface %s",
+ __PRETTY_FUNCTION__, src_str,
+ ifp->name);
+ }
+ FREE_ADDR_LIST_THEN_RETURN(-8);
+ }
+
+ /* actual addr list has been saved under neighbor */
+ return 0;
}
- FREE_ADDR_LIST_THEN_RETURN(-9);
- }
- /* actual addr list is saved under neighbor */
- return 0;
-
- } /* GenId mismatch: replace neighbor */
-
- } /* GenId received */
-
- /*
- Update existing neighbor
- */
-
- pim_neighbor_update(neigh,
- hello_options,
- hello_option_holdtime,
- hello_option_dr_priority,
- hello_option_addr_list);
- /* actual addr list is saved under neighbor */
- return 0;
+
+ /*
+ Received generation ID ?
+ */
+
+ if (PIM_OPTION_IS_SET(hello_options, PIM_OPTION_MASK_GENERATION_ID)) {
+ /* GenID mismatch ? */
+ if (!PIM_OPTION_IS_SET(neigh->hello_options,
+ PIM_OPTION_MASK_GENERATION_ID)
+ || (hello_option_generation_id != neigh->generation_id)) {
+ /* GenID mismatch, then replace neighbor */
+
+ if (PIM_DEBUG_PIM_HELLO) {
+ char src_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<src?>", src_addr, src_str,
+ sizeof(src_str));
+ zlog_debug(
+ "%s: GenId mismatch new=%08x old=%08x: replacing neighbor %s on %s",
+ __PRETTY_FUNCTION__,
+ hello_option_generation_id,
+ neigh->generation_id, src_str,
+ ifp->name);
+ }
+
+ pim_upstream_rpf_genid_changed(pim_ifp->pim,
+ neigh->source_addr);
+
+ pim_neighbor_delete(ifp, neigh, "GenID mismatch");
+ neigh = pim_neighbor_add(ifp, src_addr, hello_options,
+ hello_option_holdtime,
+ hello_option_propagation_delay,
+ hello_option_override_interval,
+ hello_option_dr_priority,
+ hello_option_generation_id,
+ hello_option_addr_list,
+ PIM_NEIGHBOR_SEND_NOW);
+ if (!neigh) {
+ if (PIM_DEBUG_PIM_HELLO) {
+ char src_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<src?>", src_addr,
+ src_str,
+ sizeof(src_str));
+ zlog_debug(
+ "%s: failure re-creating PIM neighbor %s on interface %s",
+ __PRETTY_FUNCTION__, src_str,
+ ifp->name);
+ }
+ FREE_ADDR_LIST_THEN_RETURN(-9);
+ }
+ /* actual addr list is saved under neighbor */
+ return 0;
+
+ } /* GenId mismatch: replace neighbor */
+
+ } /* GenId received */
+
+ /*
+ Update existing neighbor
+ */
+
+ pim_neighbor_update(neigh, hello_options, hello_option_holdtime,
+ hello_option_dr_priority, hello_option_addr_list);
+ /* actual addr list is saved under neighbor */
+ return 0;
}
-int pim_hello_build_tlv(struct interface *ifp,
- uint8_t *tlv_buf, int tlv_buf_size,
- uint16_t holdtime,
- uint32_t dr_priority,
- uint32_t generation_id,
- uint16_t propagation_delay,
- uint16_t override_interval,
+int pim_hello_build_tlv(struct interface *ifp, uint8_t *tlv_buf,
+ int tlv_buf_size, uint16_t holdtime,
+ uint32_t dr_priority, uint32_t generation_id,
+ uint16_t propagation_delay, uint16_t override_interval,
int can_disable_join_suppression)
{
- uint8_t *curr = tlv_buf;
- uint8_t *pastend = tlv_buf + tlv_buf_size;
- uint8_t *tmp;
-
- /*
- * Append options
- */
-
- /* Holdtime */
- curr = pim_tlv_append_uint16(curr,
- pastend,
- PIM_MSG_OPTION_TYPE_HOLDTIME,
- holdtime);
- if (!curr) {
- if (PIM_DEBUG_PIM_HELLO) {
- zlog_debug("%s: could not set PIM hello Holdtime option for interface %s",
- __PRETTY_FUNCTION__, ifp->name);
- }
- return -1;
- }
+ uint8_t *curr = tlv_buf;
+ uint8_t *pastend = tlv_buf + tlv_buf_size;
+ uint8_t *tmp;
+ struct pim_interface *pim_ifp = ifp->info;
+ struct pim_instance *pim = pim_ifp->pim;
+
+ /*
+ * Append options
+ */
+
+ /* Holdtime */
+ curr = pim_tlv_append_uint16(curr, pastend,
+ PIM_MSG_OPTION_TYPE_HOLDTIME, holdtime);
+ if (!curr) {
+ if (PIM_DEBUG_PIM_HELLO) {
+ zlog_debug(
+ "%s: could not set PIM hello Holdtime option for interface %s",
+ __PRETTY_FUNCTION__, ifp->name);
+ }
+ return -1;
+ }
- /* LAN Prune Delay */
- tmp = pim_tlv_append_2uint16(curr,
- pastend,
- PIM_MSG_OPTION_TYPE_LAN_PRUNE_DELAY,
- propagation_delay,
- override_interval);
- if (!tmp) {
- if (PIM_DEBUG_PIM_HELLO) {
- zlog_debug("%s: could not set PIM LAN Prune Delay option for interface %s",
- __PRETTY_FUNCTION__, ifp->name);
- }
- return -1;
- }
- if (can_disable_join_suppression) {
- *((uint8_t*)(curr) + 4) |= 0x80; /* enable T bit */
- }
- curr = tmp;
-
- /* DR Priority */
- curr = pim_tlv_append_uint32(curr,
- pastend,
- PIM_MSG_OPTION_TYPE_DR_PRIORITY,
- dr_priority);
- if (!curr) {
- if (PIM_DEBUG_PIM_HELLO) {
- zlog_debug("%s: could not set PIM hello DR Priority option for interface %s",
- __PRETTY_FUNCTION__, ifp->name);
- }
- return -2;
- }
+ /* LAN Prune Delay */
+ tmp = pim_tlv_append_2uint16(curr, pastend,
+ PIM_MSG_OPTION_TYPE_LAN_PRUNE_DELAY,
+ propagation_delay, override_interval);
+ if (!tmp) {
+ if (PIM_DEBUG_PIM_HELLO) {
+ zlog_debug(
+ "%s: could not set PIM LAN Prune Delay option for interface %s",
+ __PRETTY_FUNCTION__, ifp->name);
+ }
+ return -1;
+ }
+ if (can_disable_join_suppression) {
+ *((uint8_t *)(curr) + 4) |= 0x80; /* enable T bit */
+ }
+ curr = tmp;
+
+ /* DR Priority */
+ curr = pim_tlv_append_uint32(
+ curr, pastend, PIM_MSG_OPTION_TYPE_DR_PRIORITY, dr_priority);
+ if (!curr) {
+ if (PIM_DEBUG_PIM_HELLO) {
+ zlog_debug(
+ "%s: could not set PIM hello DR Priority option for interface %s",
+ __PRETTY_FUNCTION__, ifp->name);
+ }
+ return -2;
+ }
- /* Generation ID */
- curr = pim_tlv_append_uint32(curr,
- pastend,
- PIM_MSG_OPTION_TYPE_GENERATION_ID,
- generation_id);
- if (!curr) {
- if (PIM_DEBUG_PIM_HELLO) {
- zlog_debug("%s: could not set PIM hello Generation ID option for interface %s",
- __PRETTY_FUNCTION__, ifp->name);
- }
- return -3;
- }
+ /* Generation ID */
+ curr = pim_tlv_append_uint32(curr, pastend,
+ PIM_MSG_OPTION_TYPE_GENERATION_ID,
+ generation_id);
+ if (!curr) {
+ if (PIM_DEBUG_PIM_HELLO) {
+ zlog_debug(
+ "%s: could not set PIM hello Generation ID option for interface %s",
+ __PRETTY_FUNCTION__, ifp->name);
+ }
+ return -3;
+ }
- /* Secondary Address List */
- if (ifp->connected->count) {
- curr = pim_tlv_append_addrlist_ucast(curr,
- pastend,
- ifp->connected,
- AF_INET);
- if (!curr) {
- if (PIM_DEBUG_PIM_HELLO) {
- zlog_debug("%s: could not set PIM hello v4 Secondary Address List option for interface %s",
- __PRETTY_FUNCTION__, ifp->name);
- }
- return -4;
- }
- if (pimg->send_v6_secondary)
- {
- curr = pim_tlv_append_addrlist_ucast(curr,
- pastend,
- ifp->connected,
- AF_INET6);
- if (!curr) {
- if (PIM_DEBUG_PIM_HELLO) {
- zlog_debug("%s: could not sent PIM hello v6 secondary Address List option for interface %s",
- __PRETTY_FUNCTION__, ifp->name);
- }
- return -4;
- }
- }
- }
+ /* Secondary Address List */
+ if (ifp->connected->count) {
+ curr = pim_tlv_append_addrlist_ucast(curr, pastend,
+ ifp->connected, AF_INET);
+ if (!curr) {
+ if (PIM_DEBUG_PIM_HELLO) {
+ zlog_debug(
+ "%s: could not set PIM hello v4 Secondary Address List option for interface %s",
+ __PRETTY_FUNCTION__, ifp->name);
+ }
+ return -4;
+ }
+ if (pim->send_v6_secondary) {
+ curr = pim_tlv_append_addrlist_ucast(
+ curr, pastend, ifp->connected, AF_INET6);
+ if (!curr) {
+ if (PIM_DEBUG_PIM_HELLO) {
+ zlog_debug(
+ "%s: could not sent PIM hello v6 secondary Address List option for interface %s",
+ __PRETTY_FUNCTION__, ifp->name);
+ }
+ return -4;
+ }
+ }
+ }
- return curr - tlv_buf;
+ return curr - tlv_buf;
}
/*
*/
void pim_hello_require(struct interface *ifp)
{
- struct pim_interface *pim_ifp;
+ struct pim_interface *pim_ifp;
- zassert(ifp);
+ zassert(ifp);
- pim_ifp = ifp->info;
+ pim_ifp = ifp->info;
- zassert(pim_ifp);
+ zassert(pim_ifp);
- if (pim_ifp->pim_ifstat_hello_sent)
- return;
+ if (pim_ifp->pim_ifstat_hello_sent)
+ return;
- pim_hello_restart_now(ifp); /* Send hello and restart timer */
+ pim_hello_restart_now(ifp); /* Send hello and restart timer */
}
projects / mirror_frr.git / blobdiff