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lib, bgpd: Log next hops

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Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Reviewed-by:   Donald Sharp <sharpd@cumulusnetworks.com>
Reviewed-by:   Daniel Walton <dwalton@cumulusnetworks.com>

Ticket: CM-12390
Reviewed By: CCR-5156
Testing Done: Manual
This commit is contained in:
vivek 2016-09-08 09:38:53 -07:00
parent 72a5e63bad
commit 80c2442a9b
3 changed files with 54 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
bgpd/bgp_nht.c
View File

@ -370,8 +370,8 @@ bgp_parse_nexthop_update (int command, vrf_id_t vrf_id)
{
char buf[PREFIX2STR_BUFFER];
prefix2str(&p, buf, sizeof (buf));
zlog_debug("parse nexthop update(%s): metric=%d, #nexthop=%d", buf,
metric, nexthop_num);
zlog_debug("%d: NH update for %s - metric %d (cur %d) #nhops %d (cur %d)",
vrf_id, buf, metric, bnc->metric, nexthop_num, bnc->nexthop_num);
}
if (metric != bnc->metric)
@ -420,6 +420,13 @@ bgp_parse_nexthop_update (int command, vrf_id_t vrf_id)
break;
}
if (BGP_DEBUG(nht, NHT))
{
char buf[NEXTHOP_STRLEN];
zlog_debug(" nhop via %s",
nexthop2str (nexthop, buf, sizeof (buf)));
}
if (nhlist_tail)
{
nhlist_tail->next = nexthop;
@ -642,6 +649,14 @@ evaluate_paths (struct bgp_nexthop_cache *bnc)
int afi;
struct peer *peer = (struct peer *)bnc->nht_info;
if (BGP_DEBUG(nht, NHT))
{
char buf[PREFIX2STR_BUFFER];
bnc_str(bnc, buf, PREFIX2STR_BUFFER);
zlog_debug("NH update for %s - flags 0x%x chgflags 0x%x - evaluate paths",
buf, bnc->flags, bnc->change_flags);
}
LIST_FOREACH(path, &(bnc->paths), nh_thread)
{
if (!(path->type == ZEBRA_ROUTE_BGP &&

33
lib/nexthop.c
View File

@ -153,3 +153,36 @@ nexthops_free (struct nexthop *nexthop)
nexthop_free (nh);
}
}
const char *
nexthop2str (struct nexthop *nexthop, char *str, int size)
{
switch (nexthop->type)
{
case NEXTHOP_TYPE_IFINDEX:
snprintf (str, size, "if %u", nexthop->ifindex);
break;
case NEXTHOP_TYPE_IPV4:
snprintf (str, size, "%s", inet_ntoa (nexthop->gate.ipv4));
break;
case NEXTHOP_TYPE_IPV4_IFINDEX:
snprintf (str, size, "%s if %u",
inet_ntoa (nexthop->gate.ipv4), nexthop->ifindex);
break;
case NEXTHOP_TYPE_IPV6:
snprintf (str, size, "%s", inet6_ntoa (nexthop->gate.ipv6));
break;
case NEXTHOP_TYPE_IPV6_IFINDEX:
snprintf (str, size, "%s if %u",
inet6_ntoa (nexthop->gate.ipv6), nexthop->ifindex);
break;
case NEXTHOP_TYPE_BLACKHOLE:
snprintf (str, size, "blackhole");
break;
default:
snprintf (str, size, "unknown");
break;
}
return str;
}

4
lib/nexthop.h
View File

@ -26,6 +26,9 @@
#include "prefix.h"
/* Maximum next hop string length - gateway + ifindex */
#define NEXTHOP_STRLEN (INET6_ADDRSTRLEN + 30)
union g_addr {
struct in_addr ipv4;
struct in6_addr ipv6;
@ -97,4 +100,5 @@ void nexthops_free (struct nexthop *nexthop);
extern const char *nexthop_type_to_str (enum nexthop_types_t nh_type);
extern int nexthop_same_no_recurse (struct nexthop *next1, struct nexthop *next2);
extern const char * nexthop2str (struct nexthop *nexthop, char *str, int size);
#endif /*_LIB_NEXTHOP_H */