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Merge pull request #475 from chiragshah6/pim_dev_3_0

Browse Source 
Pim related defect fixes
This commit is contained in:
Jafar Al-Gharaibeh 2017-05-08 15:01:04 -05:00 committed by GitHub
commit 76dfee9873
16 changed files with 325 additions and 250 deletions
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1
pimd/pim_cmd.c
View File

@ -4085,6 +4085,7 @@ DEFUN (ip_pim_ecmp_rebalance,
"Enable PIM ECMP \n"
"Enable PIM ECMP Rebalance\n")
{
qpim_ecmp_enable = 1;
qpim_ecmp_rebalance_enable = 1;
return CMD_SUCCESS;

34
pimd/pim_iface.c
View File

@ -50,6 +50,8 @@ struct list *pim_ifchannel_list = NULL;
static int pim_iface_vif_index[MAXVIFS];
static void pim_if_igmp_join_del_all(struct interface *ifp);
static int igmp_join_sock(const char *ifname, ifindex_t ifindex,
struct in_addr group_addr, struct in_addr source_addr);
void
pim_if_init (void)
@ -583,6 +585,35 @@ void pim_if_addr_add(struct connected *ifc)
/* if addr new, add IGMP socket */
pim_igmp_sock_add(pim_ifp->igmp_socket_list, ifaddr, ifp);
}
/* Replay Static IGMP groups */
if (pim_ifp->igmp_join_list)
{
struct listnode *node;
struct listnode *nextnode;
struct igmp_join *ij;
int join_fd;
for (ALL_LIST_ELEMENTS (pim_ifp->igmp_join_list, node, nextnode, ij))
{
/* Close socket and reopen with Source and Group */
close(ij->sock_fd);
join_fd = igmp_join_sock(ifp->name, ifp->ifindex, ij->group_addr, ij->source_addr);
if (join_fd < 0)
{
char group_str[INET_ADDRSTRLEN];
char source_str[INET_ADDRSTRLEN];
pim_inet4_dump("<grp?>", ij->group_addr, group_str, sizeof(group_str));
pim_inet4_dump("<src?>", ij->source_addr, source_str, sizeof(source_str));
zlog_warn("%s: igmp_join_sock() failure for IGMP group %s source %s on interface %s",
__PRETTY_FUNCTION__,
group_str, source_str, ifp->name);
/* warning only */
}
else
ij->sock_fd = join_fd;
}
}
} /* igmp */
if (PIM_IF_TEST_PIM(pim_ifp->options))
@ -1506,6 +1537,9 @@ pim_if_connected_to_source (struct interface *ifp, struct in_addr src)
struct connected *c;
struct prefix p;
if (!ifp)
return 0;
p.family = AF_INET;
p.u.prefix4 = src;
p.prefixlen = IPV4_MAX_BITLEN;

9
pimd/pim_ifchannel.c
View File

@ -145,6 +145,9 @@ void pim_ifchannel_delete(struct pim_ifchannel *ch)
if (ch->upstream->flags & PIM_UPSTREAM_FLAG_MASK_SRC_IGMP)
mask = PIM_OIF_FLAG_PROTO_IGMP;
/* SGRpt entry could have empty oil */
if (ch->upstream->channel_oil)
pim_channel_del_oif (ch->upstream->channel_oil, ch->interface, mask);
pim_channel_del_oif (ch->upstream->channel_oil, ch->interface, mask);
/*
* Do we have any S,G's that are inheriting?
@ -610,6 +613,7 @@ static int on_ifjoin_prune_pending_timer(struct thread *t)
pim_ifp = ifp->info;
send_prune_echo = (listcount(pim_ifp->pim_neighbor_list) > 1);
//ch->ifjoin_state transition to NOINFO
ifjoin_to_noinfo(ch);
/* from here ch may have been deleted */
@ -1093,8 +1097,7 @@ void pim_ifchannel_local_membership_del(struct interface *ifp,
if (!chchannel && c_oil && c_oil->oil.mfcc_ttls[pim_ifp->mroute_vif_index])
pim_channel_del_oif (c_oil, ifp, PIM_OIF_FLAG_PROTO_STAR);
if (c_oil->oil_size == 0)
pim_upstream_del (child, __PRETTY_FUNCTION__);
/* Child node removal/ref count-- will happen as part of parent' delete_no_info */
}
}
delete_on_noinfo(orig);
@ -1288,7 +1291,7 @@ pim_ifchannel_set_star_g_join_state (struct pim_ifchannel *ch, int eom, uint8_t
if (up)
{
if (PIM_DEBUG_TRACE)
zlog_debug ("%s: add inherit oif to up %s ", __PRETTY_FUNCTION__, up->sg_str);
zlog_debug ("%s: clearing SGRpt flag, add inherit oif to up %s ", __PRETTY_FUNCTION__, up->sg_str);
pim_channel_add_oif (up->channel_oil, ch->interface, PIM_OIF_FLAG_PROTO_STAR);
}
}

5
pimd/pim_igmpv3.c
View File

@ -357,10 +357,11 @@ void igmp_source_delete(struct igmp_source *source)
char source_str[INET_ADDRSTRLEN];
pim_inet4_dump("<group?>", group->group_addr, group_str, sizeof(group_str));
pim_inet4_dump("<source?>", source->source_addr, source_str, sizeof(source_str));
zlog_debug("Deleting IGMP source %s for group %s from socket %d interface %s",
zlog_debug("Deleting IGMP source %s for group %s from socket %d interface %s c_oil ref_count %d",
source_str, group_str,
group->group_igmp_sock->fd,
group->group_igmp_sock->interface->name);
group->group_igmp_sock->interface->name,
source->source_channel_oil ? source->source_channel_oil->oil_ref_count : 0);
}
source_timer_off(group, source);

11
pimd/pim_join.c
View File

@ -374,7 +374,7 @@ int pim_joinprune_send(struct pim_rpf *rpf,
struct list *groups)
{
struct pim_jp_agg_group *group;
struct pim_interface *pim_ifp;
struct pim_interface *pim_ifp = NULL;
struct pim_jp_groups *grp = NULL;
struct pim_jp *msg;
struct listnode *node, *nnode;
@ -395,12 +395,13 @@ int pim_joinprune_send(struct pim_rpf *rpf,
return -1;
}
if (!pim_ifp) {
zlog_warn("%s: multicast not enabled on interface %s",
if (!pim_ifp)
{
zlog_warn ("%s: multicast not enabled on interface %s",
__PRETTY_FUNCTION__,
rpf->source_nexthop.interface->name);
return -1;
}
return -1;
}
if (PIM_INADDR_IS_ANY(rpf->rpf_addr.u.prefix4))
{

9
pimd/pim_jp_agg.c
View File

@ -127,6 +127,10 @@ pim_jp_agg_get_interface_upstream_switch_list (struct pim_rpf *rpf)
struct pim_iface_upstream_switch *pius;
struct listnode *node, *nnode;
/* Old interface is pim disabled */
if (!pim_ifp)
return NULL;
for (ALL_LIST_ELEMENTS(pim_ifp->upstream_switch_list, node, nnode, pius))
{
if (pius->address.s_addr == rpf->rpf_addr.u.prefix4.s_addr)
@ -323,7 +327,8 @@ pim_jp_agg_switch_interface (struct pim_rpf *orpf,
*/
/* send Prune(S,G) to the old upstream neighbor */
pim_jp_agg_add_group (opius->us, up, false);
if (opius)
pim_jp_agg_add_group (opius->us, up, false);
/* send Join(S,G) to the current upstream neighbor */
pim_jp_agg_add_group (npius->us, up, true);
@ -343,7 +348,7 @@ pim_jp_agg_single_upstream_send (struct pim_rpf *rpf,
static bool first = true;
/* skip JP upstream messages if source is directly connected */
if (!rpf->source_nexthop.interface ||
if (!up || !rpf->source_nexthop.interface ||
pim_if_connected_to_source (rpf->source_nexthop.interface, up->sg.src))
return;

4
pimd/pim_msg.c
View File

@ -195,7 +195,9 @@ pim_msg_build_jp_groups (struct pim_jp_groups *grp, struct pim_jp_agg_group *sgs
struct pim_rpf *rpf = pim_rp_g (source->up->sg.grp);
bits = PIM_ENCODE_SPARSE_BIT | PIM_ENCODE_WC_BIT | PIM_ENCODE_RPT_BIT;
stosend = rpf->rpf_addr.u.prefix4;
up = source->up;
/* Only Send SGRpt in case of *,G Join */
if (source->is_join)
up = source->up;
}
else
{

295
pimd/pim_nht.c
View File

@ -147,7 +147,9 @@ pim_nexthop_cache_add (struct pim_rpf *rpf_addr)
return pnc;
}
/* This API is used to Register an address with Zebra */
/* This API is used to Register an address with Zebra
ret 1 means nexthop cache is found.
*/
int
pim_find_or_track_nexthop (struct prefix *addr, struct pim_upstream *up,
struct rp_info *rp,
@ -167,13 +169,6 @@ pim_find_or_track_nexthop (struct prefix *addr, struct pim_upstream *up,
pnc = pim_nexthop_cache_find (&rpf);
if (!pnc)
{
if (PIM_DEBUG_ZEBRA)
{
char buf[PREFIX2STR_BUFFER];
prefix2str (&rpf.rpf_addr, buf, sizeof (buf));
zlog_debug ("%s: NHT New PNC allocated for addr %s ",
__PRETTY_FUNCTION__, buf);
}
pnc = pim_nexthop_cache_add (&rpf);
if (pnc)
pim_sendmsg_zebra_rnh (zclient, pnc, ZEBRA_NEXTHOP_REGISTER);
@ -213,8 +208,7 @@ pim_find_or_track_nexthop (struct prefix *addr, struct pim_upstream *up,
{
char buf[PREFIX2STR_BUFFER];
prefix2str (addr, buf, sizeof (buf));
zlog_debug
("%s: Add upstream %s node to pnc cached list, rpf %s",
zlog_debug ("%s: Add upstream %s node to pnc cached list, rpf %s",
__PRETTY_FUNCTION__, up->sg_str, buf);
}
listnode_add_sort (pnc->upstream_list, up);
@ -271,11 +265,12 @@ pim_delete_tracked_nexthop (struct prefix *addr, struct pim_upstream *up,
}
/* Update RP nexthop info based on Nexthop update received from Zebra.*/
static int
int
pim_update_rp_nh (struct pim_nexthop_cache *pnc)
{
struct listnode *node = NULL;
struct rp_info *rp_info = NULL;
int ret = 0;
/*Traverse RP list and update each RP Nexthop info */
for (ALL_LIST_ELEMENTS_RO (pnc->rp_list, node, rp_info))
@ -284,8 +279,8 @@ pim_update_rp_nh (struct pim_nexthop_cache *pnc)
continue;
//Compute PIM RPF using cached nexthop
pim_ecmp_nexthop_search (pnc, &rp_info->rp.source_nexthop,
&rp_info->rp.rpf_addr, &rp_info->group, 1);
ret = pim_ecmp_nexthop_search (pnc, &rp_info->rp.source_nexthop,
&rp_info->rp.rpf_addr, &rp_info->group, 1);
if (PIM_DEBUG_TRACE)
{
@ -298,7 +293,10 @@ pim_update_rp_nh (struct pim_nexthop_cache *pnc)
}
}
return 0;
if (ret)
return 0;
return 1;
}
/* This API is used to traverse nexthop cache of RPF addr
@ -320,9 +318,9 @@ pim_resolve_upstream_nh (struct prefix *nht_p)
{
if (nh_node->gate.ipv4.s_addr == 0)
{
nbr =
pim_neighbor_find_if (if_lookup_by_index
(nh_node->ifindex, VRF_DEFAULT));
struct interface *ifp1 = if_lookup_by_index(nh_node->ifindex,
VRF_DEFAULT);
nbr = pim_neighbor_find_if (ifp1);
if (nbr)
{
nh_node->gate.ipv4 = nbr->source_addr;
@ -333,9 +331,8 @@ pim_resolve_upstream_nh (struct prefix *nht_p)
pim_inet4_dump ("<nht_nbr?>", nbr->source_addr, str1,
sizeof (str1));
pim_addr_dump ("<nht_addr?>", nht_p, str, sizeof (str));
zlog_debug
("%s: addr %s new nexthop addr %s ifindex %d ",
__PRETTY_FUNCTION__, str, str1, nh_node->ifindex);
zlog_debug ("%s: addr %s new nexthop addr %s interface %s",
__PRETTY_FUNCTION__, str, str1, ifp1->name);
}
}
}
@ -368,18 +365,15 @@ pim_update_upstream_nh (struct pim_nexthop_cache *pnc)
/* update kernel multicast forwarding cache (MFC) */
if (up->channel_oil)
{
vif_index =
pim_if_find_vifindex_by_ifindex (up->rpf.
source_nexthop.interface->
ifindex);
ifindex_t ifindex = up->rpf.source_nexthop.interface->ifindex;
vif_index = pim_if_find_vifindex_by_ifindex (ifindex);
/* Pass Current selected NH vif index to mroute download */
if (vif_index)
pim_scan_individual_oil (up->channel_oil, vif_index);
else
{
if (PIM_DEBUG_ZEBRA)
zlog_debug
("%s: NHT upstream %s channel_oil IIF %s vif_index is not valid",
zlog_debug ("%s: NHT upstream %s channel_oil IIF %s vif_index is not valid",
__PRETTY_FUNCTION__, up->sg_str,
up->rpf.source_nexthop.interface->name);
}
@ -490,7 +484,7 @@ pim_compute_ecmp_hash (struct prefix * src, struct prefix * grp)
}
hash_val = jhash_2words (g, s, 101);
if (PIM_DEBUG_TRACE)
if (PIM_DEBUG_PIM_TRACE_DETAIL)
{
char buf[PREFIX2STR_BUFFER];
char bufg[PREFIX2STR_BUFFER];
@ -519,49 +513,57 @@ pim_ecmp_nexthop_search (struct pim_nexthop_cache *pnc,
if (!pnc || !pnc->nexthop_num || !nexthop)
return -1;
if (qpim_ecmp_enable)
//Current Nexthop is VALID, check to stay on the current path.
if (nexthop->interface && nexthop->interface->info &&
nexthop->mrib_nexthop_addr.u.prefix4.s_addr !=
PIM_NET_INADDR_ANY)
{
//User configured knob to explicitly switch to new path.
/* User configured knob to explicitly switch
to new path is disabled or current path
metric is less than nexthop update.
*/
if (qpim_ecmp_rebalance_enable == 0)
{
//Current Nexthop is VALID then stay on the current path.
if (nexthop->interface && nexthop->interface->info &&
nexthop->mrib_nexthop_addr.u.prefix4.s_addr !=
PIM_NET_INADDR_ANY)
uint8_t curr_route_valid = 0;
//Check if current nexthop is present in new updated Nexthop list.
//If the current nexthop is not valid, candidate to choose new Nexthop.
for (nh_node = pnc->nexthop; nh_node; nh_node = nh_node->next)
curr_route_valid = (nexthop->interface->ifindex == nh_node->ifindex);
if (curr_route_valid &&
!pim_if_connected_to_source (nexthop->interface,
src->u.prefix4))
{
if (neighbor_needed
&& !pim_if_connected_to_source (nexthop->interface,
src->u.prefix4))
nbr = pim_neighbor_find (nexthop->interface,
nexthop->mrib_nexthop_addr.u.prefix4);
if (!nbr && !if_is_loopback (nexthop->interface))
{
nbr = pim_neighbor_find (nexthop->interface,
nexthop->mrib_nexthop_addr.
u.prefix4);
if (!nbr && !if_is_loopback (nexthop->interface))
if (PIM_DEBUG_TRACE)
zlog_debug ("%s: current nexthop does not have nbr ",
__PRETTY_FUNCTION__);
}
else
{
if (PIM_DEBUG_TRACE)
{
if (PIM_DEBUG_TRACE)
zlog_debug ("%s: current nexthop does not have nbr ",
__PRETTY_FUNCTION__);
}
else
{
if (PIM_DEBUG_TRACE)
{
char src_str[INET_ADDRSTRLEN];
pim_inet4_dump ("<addr?>", src->u.prefix4, src_str,
sizeof (src_str));
char grp_str[INET_ADDRSTRLEN];
pim_inet4_dump ("<addr?>", grp->u.prefix4, grp_str,
sizeof (grp_str));
zlog_debug
("%s: %s %s current nexthop %d is valid, not choosing new path",
__PRETTY_FUNCTION__, src_str, grp_str,
nexthop->interface->ifindex);
}
return 0;
char src_str[INET_ADDRSTRLEN];
pim_inet4_dump ("<addr?>", src->u.prefix4, src_str,
sizeof (src_str));
char grp_str[INET_ADDRSTRLEN];
pim_inet4_dump ("<addr?>", grp->u.prefix4, grp_str,
sizeof (grp_str));
zlog_debug ("%s: (%s, %s) current nexthop %s is valid, skipping new path selection",
__PRETTY_FUNCTION__, src_str, grp_str,
nexthop->interface->name);
}
return 0;
}
}
}
}
if (qpim_ecmp_enable)
{
//PIM ECMP flag is enable then choose ECMP path.
hash_val = pim_compute_ecmp_hash (src, grp);
mod_val = hash_val % pnc->nexthop_num;
@ -574,7 +576,7 @@ pim_ecmp_nexthop_search (struct pim_nexthop_cache *pnc,
nh_node = nh_node->next)
{
first_ifindex = nh_node->ifindex;
ifp = if_lookup_by_index (first_ifindex, VRF_DEFAULT);
ifp = if_lookup_by_index(first_ifindex, VRF_DEFAULT);
if (!ifp)
{
if (PIM_DEBUG_ZEBRA)
@ -582,8 +584,7 @@ pim_ecmp_nexthop_search (struct pim_nexthop_cache *pnc,
char addr_str[INET_ADDRSTRLEN];
pim_inet4_dump ("<addr?>", src->u.prefix4, addr_str,
sizeof (addr_str));
zlog_debug
("%s %s: could not find interface for ifindex %d (address %s)",
zlog_debug ("%s %s: could not find interface for ifindex %d (address %s)",
__FILE__, __PRETTY_FUNCTION__, first_ifindex, addr_str);
}
if (nh_iter == mod_val)
@ -598,8 +599,7 @@ pim_ecmp_nexthop_search (struct pim_nexthop_cache *pnc,
char addr_str[INET_ADDRSTRLEN];
pim_inet4_dump ("<addr?>", src->u.prefix4, addr_str,
sizeof (addr_str));
zlog_debug
("%s: multicast not enabled on input interface %s (ifindex=%d, RPF for source %s)",
zlog_debug ("%s: multicast not enabled on input interface %s (ifindex=%d, RPF for source %s)",
__PRETTY_FUNCTION__, ifp->name, first_ifindex, addr_str);
}
if (nh_iter == mod_val)
@ -617,9 +617,8 @@ pim_ecmp_nexthop_search (struct pim_nexthop_cache *pnc,
if (!nbr && !if_is_loopback (ifp))
{
if (PIM_DEBUG_ZEBRA)
zlog_debug
("%s: pim nbr not found on input interface %s",
__PRETTY_FUNCTION__, ifp->name);
zlog_debug ("%s: pim nbr not found on input interface %s",
__PRETTY_FUNCTION__, ifp->name);
if (nh_iter == mod_val)
mod_val++; //Select nexthpath
nh_iter++;
@ -639,30 +638,22 @@ pim_ecmp_nexthop_search (struct pim_nexthop_cache *pnc,
nexthop->last_lookup_time = pim_time_monotonic_usec ();
nexthop->nbr = nbr;
found = 1;
if (PIM_DEBUG_ZEBRA)
{
char buf[NEXTHOP_STRLEN];
char buf2[PREFIX2STR_BUFFER];
char buf3[PREFIX2STR_BUFFER];
char buf4[PREFIX2STR_BUFFER];
char buf[INET_ADDRSTRLEN];
char buf2[INET_ADDRSTRLEN];
char buf3[INET_ADDRSTRLEN];
pim_inet4_dump ("<src?>", src->u.prefix4, buf2, sizeof (buf2));
if (grp)
pim_inet4_dump ("<src?>", grp->u.prefix4, buf3,
sizeof (buf3));
pim_inet4_dump ("<grp?>", grp->u.prefix4, buf3, sizeof (buf3));
pim_inet4_dump ("<rpf?>",
nexthop->mrib_nexthop_addr.u.prefix4, buf4,
sizeof (buf4));
snprintf (buf, sizeof (buf), "%s if %u",
inet_ntoa (nh_node->gate.ipv4), nh_node->ifindex);
zlog_debug
("%s: NHT %s %s selected nhop interface %s nhop %s (%s) mod_val:%u iter:%d ecmp_enable:%d",
__PRETTY_FUNCTION__, buf2, grp ? buf3 : " ", ifp->name,
buf, buf4, mod_val, nh_iter, qpim_ecmp_enable);
nexthop->mrib_nexthop_addr.u.prefix4, buf,
sizeof (buf));
zlog_debug ("%s: (%s, %s) selected nhop interface %s addr %s mod_val %u iter %d ecmp %d",
__PRETTY_FUNCTION__, buf2, buf3, ifp->name,
buf, mod_val, nh_iter, qpim_ecmp_enable);
}
}
nh_iter++;
}
if (found)
@ -717,8 +708,7 @@ pim_parse_nexthop_update (int command, struct zclient *zclient,
{
char buf[PREFIX2STR_BUFFER];
prefix2str (&rpf.rpf_addr, buf, sizeof (buf));
zlog_debug
("%s: Skipping NHT update, addr %s is not in local cached DB.",
zlog_debug ("%s: Skipping NHT update, addr %s is not in local cached DB.",
__PRETTY_FUNCTION__, buf);
}
return 0;
@ -737,16 +727,6 @@ pim_parse_nexthop_update (int command, struct zclient *zclient,
metric = stream_getl (s);
nexthop_num = stream_getc (s);
if (PIM_DEBUG_TRACE)
{
char buf[PREFIX2STR_BUFFER];
prefix2str (&p, buf, sizeof (buf));
zlog_debug
("%s: NHT Update for %s nexthop_num %d vrf:%d upcount %d rpcount %d",
__PRETTY_FUNCTION__, buf, nexthop_num, vrf_id,
listcount (pnc->upstream_list), listcount (pnc->rp_list));
}
if (nexthop_num)
{
pnc->nexthop_num = 0; //Only increment for pim enabled rpf.
@ -774,9 +754,8 @@ pim_parse_nexthop_update (int command, struct zclient *zclient,
case NEXTHOP_TYPE_IPV6_IFINDEX:
stream_get (&nexthop->gate.ipv6, s, 16);
nexthop->ifindex = stream_getl (s);
nbr =
pim_neighbor_find_if (if_lookup_by_index
(nexthop->ifindex, VRF_DEFAULT));
struct interface *ifp1 = if_lookup_by_index (nexthop->ifindex, VRF_DEFAULT);
nbr = pim_neighbor_find_if (ifp1);
/* Overwrite with Nbr address as NH addr */
if (nbr)
{
@ -786,21 +765,16 @@ pim_parse_nexthop_update (int command, struct zclient *zclient,
char str[INET_ADDRSTRLEN];
pim_inet4_dump ("<nht_nbr?>", nbr->source_addr, str,
sizeof (str));
zlog_debug
("%s: NHT using pim nbr addr %s ifindex %d as rpf",
__PRETTY_FUNCTION__, str, nexthop->ifindex);
zlog_debug ("%s: NHT using pim nbr addr %s interface %s as rpf",
__PRETTY_FUNCTION__, str, ifp1->name);
}
}
else
{
if (PIM_DEBUG_TRACE)
{
struct interface *ifp1 =
if_lookup_by_index (nexthop->ifindex,
VRF_DEFAULT);
struct pim_interface *pim_ifp = ifp1->info;
zlog_debug
("%s: NHT pim nbr not found on interface %s nbr count:%d ",
zlog_debug ("%s: NHT pim nbr not found on interface %s nbr count:%d ",
__PRETTY_FUNCTION__, ifp1->name,
pim_ifp->pim_neighbor_list->count);
}
@ -818,9 +792,10 @@ pim_parse_nexthop_update (int command, struct zclient *zclient,
{
char p_str[PREFIX2STR_BUFFER];
prefix2str (&p, p_str, sizeof (p_str));
zlog_debug ("%s: NHT addr %s %d-nhop via %s type %d",
__PRETTY_FUNCTION__, p_str, i + 1,
inet_ntoa (nexthop->gate.ipv4), nexthop->type);
zlog_debug ("%s: NHT addr %s %d-nhop via %s type %d distance:%u metric:%u ",
__PRETTY_FUNCTION__, p_str, i + 1,
inet_ntoa (nexthop->gate.ipv4), nexthop->type, distance,
metric);
}
ifp = if_lookup_by_index (nexthop->ifindex, VRF_DEFAULT);
@ -829,8 +804,7 @@ pim_parse_nexthop_update (int command, struct zclient *zclient,
if (PIM_DEBUG_ZEBRA)
{
char buf[NEXTHOP_STRLEN];
zlog_debug
("%s: could not find interface for ifindex %d (addr %s)",
zlog_debug ("%s: could not find interface for ifindex %d (addr %s)",
__PRETTY_FUNCTION__, nexthop->ifindex,
nexthop2str (nexthop, buf, sizeof (buf)));
}
@ -843,8 +817,7 @@ pim_parse_nexthop_update (int command, struct zclient *zclient,
if (PIM_DEBUG_ZEBRA)
{
char buf[NEXTHOP_STRLEN];
zlog_debug
("%s: multicast not enabled on input interface %s (ifindex=%d, addr %s)",
zlog_debug ("%s: multicast not enabled on input interface %s (ifindex=%d, addr %s)",
__PRETTY_FUNCTION__, ifp->name, nexthop->ifindex,
nexthop2str (nexthop, buf, sizeof (buf)));
}
@ -887,8 +860,7 @@ pim_parse_nexthop_update (int command, struct zclient *zclient,
{
char buf[PREFIX2STR_BUFFER];
prefix2str (&p, buf, sizeof (buf));
zlog_debug
("%s: NHT Update for %s nexthop_num:%d pim nexthop_num %d vrf:%d up %d rp %d",
zlog_debug ("%s: NHT Update for %s num_nh %d num_pim_nh %d vrf:%d up %d rp %d",
__PRETTY_FUNCTION__, buf, nexthop_num, pnc->nexthop_num, vrf_id,
listcount (pnc->upstream_list), listcount (pnc->rp_list));
}
@ -925,10 +897,8 @@ pim_ecmp_nexthop_lookup (struct pim_nexthop *nexthop, struct in_addr addr,
__PRETTY_FUNCTION__, addr_str, nexthop->last_lookup_time);
}
memset (nexthop_tab, 0,
sizeof (struct pim_zlookup_nexthop) * MULTIPATH_NUM);
num_ifindex =
zclient_lookup_nexthop (nexthop_tab, MULTIPATH_NUM, addr,
memset (nexthop_tab, 0, sizeof (struct pim_zlookup_nexthop) * MULTIPATH_NUM);
num_ifindex = zclient_lookup_nexthop (nexthop_tab, MULTIPATH_NUM, addr,
PIM_NEXTHOP_LOOKUP_MAX);
if (num_ifindex < 1)
{
@ -939,13 +909,13 @@ pim_ecmp_nexthop_lookup (struct pim_nexthop *nexthop, struct in_addr addr,
return -1;
}
//If PIM ECMP enable then choose ECMP path
//If PIM ECMP enable then choose ECMP path.
if (qpim_ecmp_enable)
{
hash_val = pim_compute_ecmp_hash (src, grp);
mod_val = hash_val % num_ifindex;
if (PIM_DEBUG_TRACE)
zlog_debug ("%s: hash_val %u mod_val %u ",
zlog_debug ("%s: hash_val %u mod_val %u",
__PRETTY_FUNCTION__, hash_val, mod_val);
}
@ -960,8 +930,7 @@ pim_ecmp_nexthop_lookup (struct pim_nexthop *nexthop, struct in_addr addr,
{
char addr_str[INET_ADDRSTRLEN];
pim_inet4_dump ("<addr?>", addr, addr_str, sizeof (addr_str));
zlog_debug
("%s %s: could not find interface for ifindex %d (address %s)",
zlog_debug ("%s %s: could not find interface for ifindex %d (address %s)",
__FILE__, __PRETTY_FUNCTION__, first_ifindex, addr_str);
}
if (i == mod_val)
@ -976,8 +945,7 @@ pim_ecmp_nexthop_lookup (struct pim_nexthop *nexthop, struct in_addr addr,
{
char addr_str[INET_ADDRSTRLEN];
pim_inet4_dump ("<addr?>", addr, addr_str, sizeof (addr_str));
zlog_debug
("%s: multicast not enabled on input interface %s (ifindex=%d, RPF for source %s)",
zlog_debug ("%s: multicast not enabled on input interface %s (ifindex=%d, RPF for source %s)",
__PRETTY_FUNCTION__, ifp->name, first_ifindex, addr_str);
}
if (i == mod_val)
@ -987,8 +955,7 @@ pim_ecmp_nexthop_lookup (struct pim_nexthop *nexthop, struct in_addr addr,
}
if (neighbor_needed && !pim_if_connected_to_source (ifp, addr))
{
nbr =
pim_neighbor_find (ifp, nexthop_tab[i].nexthop_addr.u.prefix4);
nbr = pim_neighbor_find (ifp, nexthop_tab[i].nexthop_addr.u.prefix4);
if (PIM_DEBUG_PIM_TRACE_DETAIL)
zlog_debug ("ifp name: %s, pim nbr: %p", ifp->name, nbr);
if (!nbr && !if_is_loopback (ifp))
@ -1001,8 +968,7 @@ pim_ecmp_nexthop_lookup (struct pim_nexthop *nexthop, struct in_addr addr,
char addr_str[INET_ADDRSTRLEN];
pim_inet4_dump ("<addr?>", addr, addr_str,
sizeof (addr_str));
zlog_debug
("%s: NBR not found on input interface %s (RPF for source %s)",
zlog_debug ("%s: NBR not found on input interface %s (RPF for source %s)",
__PRETTY_FUNCTION__, ifp->name, addr_str);
}
continue;
@ -1018,8 +984,7 @@ pim_ecmp_nexthop_lookup (struct pim_nexthop *nexthop, struct in_addr addr,
pim_addr_dump ("<nexthop?>", &nexthop_tab[i].nexthop_addr,
nexthop_str, sizeof (nexthop_str));
pim_inet4_dump ("<addr?>", addr, addr_str, sizeof (addr_str));
zlog_debug
("%s %s: found nexthop %s for addr %s interface %s metric=%d pref=%d",
zlog_debug ("%s %s: found nhop %s for addr %s interface %s metric %d dist %d",
__FILE__, __PRETTY_FUNCTION__, nexthop_str, addr_str,
ifp->name, nexthop_tab[i].route_metric,
nexthop_tab[i].protocol_distance);
@ -1041,3 +1006,67 @@ pim_ecmp_nexthop_lookup (struct pim_nexthop *nexthop, struct in_addr addr,
else
return -1;
}
int pim_ecmp_fib_lookup_if_vif_index(struct in_addr addr,
struct prefix *src, struct prefix *grp)
{
struct pim_zlookup_nexthop nexthop_tab[MULTIPATH_NUM];
int num_ifindex;
int vif_index;
ifindex_t first_ifindex;
uint32_t hash_val = 0, mod_val = 0;
memset (nexthop_tab, 0, sizeof (struct pim_zlookup_nexthop) * MULTIPATH_NUM);
num_ifindex = zclient_lookup_nexthop(nexthop_tab, MULTIPATH_NUM, addr,
PIM_NEXTHOP_LOOKUP_MAX);
if (num_ifindex < 1)
{
if (PIM_DEBUG_ZEBRA)
{
char addr_str[INET_ADDRSTRLEN];
pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
zlog_debug("%s %s: could not find nexthop ifindex for address %s",
__FILE__, __PRETTY_FUNCTION__,
addr_str);
}
return -1;
}
//If PIM ECMP enable then choose ECMP path.
if (qpim_ecmp_enable)
{
hash_val = pim_compute_ecmp_hash (src, grp);
mod_val = hash_val % num_ifindex;
if (PIM_DEBUG_TRACE)
zlog_debug ("%s: hash_val %u mod_val %u",
__PRETTY_FUNCTION__, hash_val, mod_val);
}
first_ifindex = nexthop_tab[mod_val].ifindex;
if (PIM_DEBUG_ZEBRA)
{
char addr_str[INET_ADDRSTRLEN];
pim_inet4_dump("<ifaddr?>", addr, addr_str, sizeof(addr_str));
zlog_debug("%s %s: found nexthop ifindex=%d (interface %s) for address %s",
__FILE__, __PRETTY_FUNCTION__,
first_ifindex, ifindex2ifname(first_ifindex, VRF_DEFAULT), addr_str);
}
vif_index = pim_if_find_vifindex_by_ifindex(first_ifindex);
if (vif_index < 0)
{
if (PIM_DEBUG_ZEBRA)
{
char addr_str[INET_ADDRSTRLEN];
pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
zlog_debug("%s %s: low vif_index=%d < 1 nexthop for address %s",
__FILE__, __PRETTY_FUNCTION__,
vif_index, addr_str);
}
return -2;
}
return vif_index;
}

3
pimd/pim_nht.h
View File

@ -65,5 +65,8 @@ int pim_ecmp_nexthop_lookup (struct pim_nexthop *nexthop, struct in_addr addr,
int neighbor_needed);
void pim_sendmsg_zebra_rnh (struct zclient *zclient, struct pim_nexthop_cache *pnc,
int command);
int pim_update_rp_nh (struct pim_nexthop_cache *pnc);
void pim_resolve_upstream_nh (struct prefix *nht_p);
int pim_ecmp_fib_lookup_if_vif_index(struct in_addr addr,
struct prefix *src, struct prefix *grp);
#endif

3
pimd/pim_oil.c
View File

@ -164,6 +164,7 @@ struct channel_oil *pim_channel_oil_add(struct prefix_sg *sg,
}
c_oil->oil.mfcc_parent = input_vif_index;
++c_oil->oil_ref_count;
c_oil->up = pim_upstream_find(sg); //channel might be present prior to upstream
return c_oil;
}
@ -188,6 +189,7 @@ struct channel_oil *pim_channel_oil_add(struct prefix_sg *sg,
c_oil->oil.mfcc_parent = input_vif_index;
c_oil->oil_ref_count = 1;
c_oil->installed = 0;
c_oil->up = pim_upstream_find(sg);
listnode_add_sort(pim_channel_oil_list, c_oil);
@ -204,6 +206,7 @@ void pim_channel_oil_del(struct channel_oil *c_oil)
* into pim_channel_oil_free() because the later is
* called by list_delete_all_node()
*/
c_oil->up = NULL;
listnode_delete(pim_channel_oil_list, c_oil);
hash_release (pim_channel_oil_hash, c_oil);

1
pimd/pim_oil.h
View File

@ -79,6 +79,7 @@ struct channel_oil {
time_t oif_creation[MAXVIFS];
uint32_t oif_flags[MAXVIFS];
struct channel_counts cc;
struct pim_upstream *up;
};
extern struct list *pim_channel_oil_list;

16
pimd/pim_rp.c
View File

@ -281,7 +281,7 @@ pim_rp_check_interfaces (struct rp_info *rp_info)
int
pim_rp_new (const char *rp, const char *group_range, const char *plist)
{
int result;
int result = 0;
struct rp_info *rp_info;
struct rp_info *rp_all;
struct prefix group_all;
@ -741,7 +741,7 @@ pim_rp_g (struct in_addr group)
char buf1[PREFIX2STR_BUFFER];
prefix2str (&nht_p, buf, sizeof (buf));
prefix2str (&rp_info->group, buf1, sizeof (buf1));
zlog_debug ("%s: NHT Register RP addr %s grp %s with Zebra ",
zlog_debug ("%s: NHT Register RP addr %s grp %s with Zebra",
__PRETTY_FUNCTION__, buf, buf1);
}
memset (&pnc, 0, sizeof (struct pim_nexthop_cache));
@ -759,7 +759,7 @@ pim_rp_g (struct in_addr group)
char buf1[PREFIX2STR_BUFFER];
prefix2str (&nht_p, buf, sizeof (buf));
prefix2str (&g, buf1, sizeof (buf1));
zlog_debug ("%s: NHT nexthop cache not found for RP %s grp %s",
zlog_debug ("%s: Nexthop cache not found for RP %s grp %s register with Zebra",
__PRETTY_FUNCTION__, buf, buf1);
}
pim_rpf_set_refresh_time ();
@ -972,8 +972,7 @@ pim_resolve_rp_nh (void)
{
if (nh_node->gate.ipv4.s_addr == 0)
{
nbr =
pim_neighbor_find_if (if_lookup_by_index
nbr = pim_neighbor_find_if (if_lookup_by_index
(nh_node->ifindex, VRF_DEFAULT));
if (nbr)
{
@ -982,14 +981,15 @@ pim_resolve_rp_nh (void)
{
char str[PREFIX_STRLEN];
char str1[INET_ADDRSTRLEN];
struct interface *ifp1 = if_lookup_by_index(nh_node->ifindex,
VRF_DEFAULT);
pim_inet4_dump ("<nht_nbr?>", nbr->source_addr,
str1, sizeof (str1));
pim_addr_dump ("<nht_addr?>", &nht_p, str,
sizeof (str));
zlog_debug
("%s: addr %s new nexthop addr %s ifindex %d ",
zlog_debug ("%s: addr %s new nexthop addr %s interface %s",
__PRETTY_FUNCTION__, str, str1,
nh_node->ifindex);
ifp1->name);
}
}
}

3
pimd/pim_rpf.c
View File

@ -240,8 +240,7 @@ enum pim_rpf_result pim_rpf_update(struct pim_upstream *up, struct pim_rpf *old,
if (pim_ecmp_nexthop_lookup (&rpf->source_nexthop,
up->upstream_addr, &src, &grp,
!PIM_UPSTREAM_FLAG_TEST_FHR (up->flags) &&
!PIM_UPSTREAM_FLAG_TEST_SRC_IGMP (up->
flags)))
!PIM_UPSTREAM_FLAG_TEST_SRC_IGMP (up->flags)))
{
return PIM_RPF_FAILURE;
}

23
pimd/pim_upstream.c
View File

@ -162,8 +162,9 @@ pim_upstream_del(struct pim_upstream *up, const char *name)
struct prefix nht_p;
if (PIM_DEBUG_TRACE)
zlog_debug ("%s(%s): Delete %s ref count: %d, flags: %d (Pre decrement)",
__PRETTY_FUNCTION__, name, up->sg_str, up->ref_count, up->flags);
zlog_debug ("%s(%s): Delete %s ref count: %d , flags: %d c_oil ref count %d (Pre decrement)",
__PRETTY_FUNCTION__, name, up->sg_str, up->ref_count, up->flags,
up->channel_oil->oil_ref_count);
--up->ref_count;
@ -215,6 +216,7 @@ pim_upstream_del(struct pim_upstream *up, const char *name)
up->sources = NULL;
list_delete (up->ifchannels);
up->ifchannels = NULL;
/*
notice that listnode_delete() can't be moved
@ -242,7 +244,7 @@ pim_upstream_del(struct pim_upstream *up, const char *name)
{
char buf[PREFIX2STR_BUFFER];
prefix2str (&nht_p, buf, sizeof (buf));
zlog_debug ("%s: Deregister upstream %s addr %s with Zebra",
zlog_debug ("%s: Deregister upstream %s addr %s with Zebra NHT",
__PRETTY_FUNCTION__, up->sg_str, buf);
}
pim_delete_tracked_nexthop (&nht_p, up, NULL);
@ -1016,14 +1018,17 @@ static void pim_upstream_update_assert_tracking_desired(struct pim_upstream *up)
struct pim_ifchannel *ch;
/* scan per-interface (S,G) state */
for (ALL_LIST_ELEMENTS(up->ifchannels, chnode, chnextnode, ch)) {
pim_ifp = ch->interface->info;
if (!pim_ifp)
continue;
for (ALL_LIST_ELEMENTS(up->ifchannels, chnode, chnextnode, ch))
{
if (!ch->interface)
continue;
pim_ifp = ch->interface->info;
if (!pim_ifp)
continue;
pim_ifchannel_update_assert_tracking_desired(ch);
pim_ifchannel_update_assert_tracking_desired(ch);
} /* scan iface channel list */
} /* scan iface channel list */
}
/* When kat is stopped CouldRegister goes to false so we need to

11
pimd/pim_vty.c
View File

@ -192,7 +192,16 @@ int pim_global_config_write(struct vty *vty)
VTY_NEWLINE);
++writes;
}
if (qpim_ecmp_rebalance_enable)
{
vty_out (vty, "ip pim ecmp rebalance%s", VTY_NEWLINE);
++writes;
}
else if (qpim_ecmp_enable)
{
vty_out (vty, "ip pim ecmp%s", VTY_NEWLINE);
++writes;
}
if (qpim_ssmpingd_list) {
struct listnode *node;
struct ssmpingd_sock *ss;

147
pimd/pim_zebra.c
View File

@ -53,7 +53,6 @@
static struct zclient *zclient = NULL;
static int fib_lookup_if_vif_index(struct in_addr addr);
/* Router-id update message from zebra. */
static int pim_router_id_update_zebra(int command, struct zclient *zclient,
@ -469,7 +468,28 @@ pim_scan_individual_oil (struct channel_oil *c_oil, int in_vif_index)
if (in_vif_index)
input_iface_vif_index = in_vif_index;
else
input_iface_vif_index = fib_lookup_if_vif_index (vif_source);
{
struct prefix src, grp;
src.family = AF_INET;
src.prefixlen = IPV4_MAX_BITLEN;
src.u.prefix4 = vif_source;
grp.family = AF_INET;
grp.prefixlen = IPV4_MAX_BITLEN;
grp.u.prefix4 = c_oil->oil.mfcc_mcastgrp;
if (PIM_DEBUG_ZEBRA)
{
char source_str[INET_ADDRSTRLEN];
char group_str[INET_ADDRSTRLEN];
pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, source_str, sizeof(source_str));
pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, group_str, sizeof(group_str));
zlog_debug ("%s: channel_oil (%s, %s) upstream info is not present.",
__PRETTY_FUNCTION__, source_str, group_str);
}
input_iface_vif_index = pim_ecmp_fib_lookup_if_vif_index(vif_source, &src, &grp);
}
if (input_iface_vif_index < 1)
{
if (PIM_DEBUG_ZEBRA)
@ -557,12 +577,25 @@ void pim_scan_oil()
struct listnode *node;
struct listnode *nextnode;
struct channel_oil *c_oil;
ifindex_t ifindex;
int vif_index = 0;
qpim_scan_oil_last = pim_time_monotonic_sec();
++qpim_scan_oil_events;
for (ALL_LIST_ELEMENTS(pim_channel_oil_list, node, nextnode, c_oil))
pim_scan_individual_oil (c_oil, 0);
{
if (c_oil->up && c_oil->up->rpf.source_nexthop.interface)
{
ifindex = c_oil->up->rpf.source_nexthop.interface->ifindex;
vif_index = pim_if_find_vifindex_by_ifindex (ifindex);
/* Pass Current selected NH vif index to mroute download */
if (vif_index)
pim_scan_individual_oil (c_oil, vif_index);
}
else
pim_scan_individual_oil (c_oil, 0);
}
}
static int on_rpf_cache_refresh(struct thread *t)
@ -699,67 +732,6 @@ void igmp_anysource_forward_stop(struct igmp_group *group)
igmp_source_forward_stop (source);
}
static int fib_lookup_if_vif_index(struct in_addr addr)
{
struct pim_zlookup_nexthop nexthop_tab[MULTIPATH_NUM];
int num_ifindex;
int vif_index;
ifindex_t first_ifindex;
num_ifindex = zclient_lookup_nexthop(nexthop_tab,
MULTIPATH_NUM, addr,
PIM_NEXTHOP_LOOKUP_MAX);
if (num_ifindex < 1) {
if (PIM_DEBUG_ZEBRA)
{
char addr_str[INET_ADDRSTRLEN];
pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
zlog_debug("%s %s: could not find nexthop ifindex for address %s",
__FILE__, __PRETTY_FUNCTION__,
addr_str);
}
return -1;
}
first_ifindex = nexthop_tab[0].ifindex;
if (num_ifindex > 1) {
if (PIM_DEBUG_ZEBRA)
{
char addr_str[INET_ADDRSTRLEN];
pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
zlog_debug("%s %s: FIXME ignoring multiple nexthop ifindex'es num_ifindex=%d for address %s (using only ifindex=%d)",
__FILE__, __PRETTY_FUNCTION__,
num_ifindex, addr_str, first_ifindex);
}
/* debug warning only, do not return */
}
if (PIM_DEBUG_ZEBRA) {
char addr_str[INET_ADDRSTRLEN];
pim_inet4_dump("<ifaddr?>", addr, addr_str, sizeof(addr_str));
zlog_debug("%s %s: found nexthop ifindex=%d (interface %s) for address %s",
__FILE__, __PRETTY_FUNCTION__,
first_ifindex, ifindex2ifname(first_ifindex, VRF_DEFAULT), addr_str);
}
vif_index = pim_if_find_vifindex_by_ifindex(first_ifindex);
if (vif_index < 0) {
if (PIM_DEBUG_ZEBRA)
{
char addr_str[INET_ADDRSTRLEN];
pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
zlog_debug("%s %s: low vif_index=%d < 1 nexthop for address %s",
__FILE__, __PRETTY_FUNCTION__,
vif_index, addr_str);
}
return -2;
}
return vif_index;
}
static void
igmp_source_forward_reevaluate_one(struct igmp_source *source)
{
@ -873,6 +845,7 @@ void igmp_source_forward_start(struct igmp_source *source)
int ret = 0;
struct pim_nexthop_cache out_pnc;
struct pim_nexthop nexthop;
struct pim_upstream *up = NULL;
if (!pim_rp_set_upstream_addr (&vif_source, source->source_addr, sg.grp))
return;
@ -883,20 +856,23 @@ void igmp_source_forward_start(struct igmp_source *source)
nht_p.u.prefix4 = vif_source;
memset (&out_pnc, 0, sizeof (struct pim_nexthop_cache));
src.family = AF_INET;
src.prefixlen = IPV4_MAX_BITLEN;
src.u.prefix4 = vif_source; //RP or Src address
grp.family = AF_INET;
grp.prefixlen = IPV4_MAX_BITLEN;
grp.u.prefix4 = sg.grp;
if ((ret = pim_find_or_track_nexthop (&nht_p, NULL, NULL, &out_pnc)) == 1)
{
if (out_pnc.nexthop_num)
{
src.family = AF_INET;
src.prefixlen = IPV4_MAX_BITLEN;
src.u.prefix4 = vif_source; //RP or Src address
grp.family = AF_INET;
grp.prefixlen = IPV4_MAX_BITLEN;
grp.u.prefix4 = sg.grp;
memset (&nexthop, 0, sizeof (nexthop));
up = pim_upstream_find (&sg);
memset (&nexthop, 0, sizeof (struct pim_nexthop));
if (up)
memcpy (&nexthop, &up->rpf.source_nexthop, sizeof (struct pim_nexthop));
//Compute PIM RPF using Cached nexthop
pim_ecmp_nexthop_search (&out_pnc, &nexthop,
&src, &grp, 0);
pim_ecmp_nexthop_search (&out_pnc, &nexthop, &src, &grp, 0);
if (nexthop.interface)
input_iface_vif_index = pim_if_find_vifindex_by_ifindex (nexthop.interface->ifindex);
}
@ -914,7 +890,7 @@ void igmp_source_forward_start(struct igmp_source *source)
}
}
else
input_iface_vif_index = fib_lookup_if_vif_index(vif_source);
input_iface_vif_index = pim_ecmp_fib_lookup_if_vif_index(vif_source, &src, &grp);
if (PIM_DEBUG_ZEBRA)
{
@ -1095,7 +1071,6 @@ void pim_forward_start(struct pim_ifchannel *ch)
struct prefix nht_p, src, grp;
int ret = 0;
struct pim_nexthop_cache out_pnc;
struct pim_nexthop nexthop;
/* Register addr with Zebra NHT */
nht_p.family = AF_INET;
@ -1106,8 +1081,7 @@ void pim_forward_start(struct pim_ifchannel *ch)
grp.u.prefix4 = up->sg.grp;
memset (&out_pnc, 0, sizeof (struct pim_nexthop_cache));
if ((ret =
pim_find_or_track_nexthop (&nht_p, NULL, NULL, &out_pnc)) == 1)
if ((ret = pim_find_or_track_nexthop (&nht_p, NULL, NULL, &out_pnc)) == 1)
{
if (out_pnc.nexthop_num)
{
@ -1117,11 +1091,14 @@ void pim_forward_start(struct pim_ifchannel *ch)
grp.family = AF_INET;
grp.prefixlen = IPV4_MAX_BITLEN;
grp.u.prefix4 = up->sg.grp;
memset (&nexthop, 0, sizeof (nexthop));
//Compute PIM RPF using Cached nexthop
pim_ecmp_nexthop_search (&out_pnc, &nexthop, &src, &grp, 0);
input_iface_vif_index =
pim_if_find_vifindex_by_ifindex (nexthop.interface->ifindex);
if (pim_ecmp_nexthop_search (&out_pnc, &up->rpf.source_nexthop, &src, &grp, 0) == 0)
input_iface_vif_index = pim_if_find_vifindex_by_ifindex (up->rpf.source_nexthop.interface->ifindex);
else
{
if (PIM_DEBUG_TRACE)
zlog_debug ("%s: Nexthop selection failed for %s ", __PRETTY_FUNCTION__, up->sg_str);
}
}
else
{
@ -1137,7 +1114,7 @@ void pim_forward_start(struct pim_ifchannel *ch)
}
}
else
input_iface_vif_index = fib_lookup_if_vif_index (up->upstream_addr);
input_iface_vif_index = pim_ecmp_fib_lookup_if_vif_index(up->upstream_addr, &src, &grp);
if (input_iface_vif_index < 1)
{
@ -1153,8 +1130,10 @@ void pim_forward_start(struct pim_ifchannel *ch)
}
if (PIM_DEBUG_TRACE)
{
zlog_debug ("%s: NHT entry %s update channel_oil vif_index %d ",
__PRETTY_FUNCTION__, up->sg_str, input_iface_vif_index);
struct interface *in_intf = pim_if_find_by_vif_index (input_iface_vif_index);
zlog_debug ("%s: Update channel_oil IIF %s VIFI %d entry %s ",
__PRETTY_FUNCTION__, in_intf ? in_intf->name : "NIL",
input_iface_vif_index, up->sg_str);
}
up->channel_oil = pim_channel_oil_add (&up->sg, input_iface_vif_index);
if (!up->channel_oil)