diff options
Diffstat (limited to 'lib/nexthop.c')
| -rw-r--r-- | lib/nexthop.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/lib/nexthop.c b/lib/nexthop.c index 57a2f1daaa..4cea14955a 100644 --- a/lib/nexthop.c +++ b/lib/nexthop.c @@ -32,6 +32,7 @@ #include "nexthop.h" #include "mpls.h" #include "jhash.h" +#include "printfrr.h" DEFINE_MTYPE_STATIC(LIB, NEXTHOP, "Nexthop") DEFINE_MTYPE_STATIC(LIB, NH_LABEL, "Nexthop label") @@ -423,3 +424,87 @@ uint32_t nexthop_hash(const struct nexthop *nexthop) } return key; } + +/* + * nexthop printing variants: + * %pNHvv + * via 1.2.3.4 + * via 1.2.3.4, eth0 + * is directly connected, eth0 + * unreachable (blackhole) + * %pNHv + * 1.2.3.4 + * 1.2.3.4, via eth0 + * directly connected, eth0 + * unreachable (blackhole) + * %pNHs + * nexthop2str() + */ +printfrr_ext_autoreg_p("NH", printfrr_nh) +static ssize_t printfrr_nh(char *buf, size_t bsz, const char *fmt, + int prec, const void *ptr) +{ + const struct nexthop *nexthop = ptr; + struct fbuf fb = { .buf = buf, .pos = buf, .len = bsz - 1 }; + bool do_ifi = false; + const char *s, *v_is = "", *v_via = "", *v_viaif = "via "; + ssize_t ret = 3; + + switch (fmt[2]) { + case 'v': + if (fmt[3] == 'v') { + v_is = "is "; + v_via = "via "; + v_viaif = ""; + ret++; + } + + switch (nexthop->type) { + case NEXTHOP_TYPE_IPV4: + case NEXTHOP_TYPE_IPV4_IFINDEX: + bprintfrr(&fb, "%s%pI4", v_via, &nexthop->gate.ipv4); + do_ifi = true; + break; + case NEXTHOP_TYPE_IPV6: + case NEXTHOP_TYPE_IPV6_IFINDEX: + bprintfrr(&fb, "%s%pI6", v_via, &nexthop->gate.ipv6); + do_ifi = true; + break; + case NEXTHOP_TYPE_IFINDEX: + bprintfrr(&fb, "%sdirectly connected, %s", v_is, + ifindex2ifname(nexthop->ifindex, + nexthop->vrf_id)); + break; + case NEXTHOP_TYPE_BLACKHOLE: + switch (nexthop->bh_type) { + case BLACKHOLE_REJECT: + s = " (ICMP unreachable)"; + break; + case BLACKHOLE_ADMINPROHIB: + s = " (ICMP admin-prohibited)"; + break; + case BLACKHOLE_NULL: + s = " (blackhole)"; + break; + default: + s = ""; + break; + } + bprintfrr(&fb, "unreachable%s", s); + break; + default: + break; + } + if (do_ifi && nexthop->ifindex) + bprintfrr(&fb, ", %s%s", v_viaif, ifindex2ifname( + nexthop->ifindex, + nexthop->vrf_id)); + + *fb.pos = '\0'; + return ret; + case 's': + nexthop2str(nexthop, buf, bsz); + return 3; + } + return 0; +} |