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bgpd: [SOO] show bgp ip unicast detail per src nhg
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Enhance the commands "show bgp ipv4/ipv6 unicast" detail and non detail
outputs when 'bgp nhg-per-origin' is configured.

Testing:
switch# sh bgp ipv4 unicast
BGP table version is 218, local router ID is 6.0.0.6, vrf id 0
Default local pref 100, local AS 65011
Status codes:  s suppressed, d damped, h history, u unsorted, * valid, > best, = multipath, + multipath nhg
               i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes:  i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found

   Network          Next Hop            Metric LocPrf Weight Path
*> 6.0.0.7/32       220.10.0.65(spine11)
                                                           0 65201 65012 ?
*+                  220.10.0.81(spine11)
                                                           0 65201 65012 ?
*+                  220.10.0.97(spine11)
                                                           0 65201 65012 ?
*+                  220.11.0.65(spine12)
                                                           0 65201 65012 ?
*+                  220.11.0.81(spine12)
                                                           0 65201 65012 ?
*+                  220.11.0.97(spine12)
                                                           0 65201 65012 ?
*> 77.0.0.0/32      220.10.0.65(spine11)
                                                           0 65201 65012 ?
*+                  220.10.0.81(spine11)
                                                           0 65201 65012 ?
*+                  220.10.0.97(spine11)
                                                           0 65201 65012 ?
*+                  220.11.0.65(spine12)
                                                           0 65201 65012 ?
*+                  220.11.0.81(spine12)
                                                           0 65201 65012 ?
*+                  220.11.0.97(spine12)

mlx-3700-68# show bgp ipv4 unicast 77.0.0.0/32
BGP routing table entry for 77.0.0.0/32, version 150 SoO:6.0.0.7, multipath soo nhg:70328887
Paths: (6 available, best #1, table default)
  Advertised to non peer-group peers:
  spine11(220.10.0.65) spine11(220.10.0.81) spine11(220.10.0.97) spine12(220.11.0.65) spine12(220.11.0.81) spine12(220.11.0.97)
  65201 65012
    220.11.0.65 (spine12) from spine12(220.11.0.65) (6.0.0.11)
      Origin incomplete, valid, external, multipath soo nhg, bestpath-from-AS 65201, best (Older Path)
      Extended Community: SoO:6.0.0.7:1234
      Last update: Mon Oct  7 09:48:36 2024
  65201 65012
    220.10.0.65 (spine11) from spine11(220.10.0.65) (6.0.0.10)
      Origin incomplete, valid, external, multipath soo nhg
      Extended Community: SoO:6.0.0.7:1234
      Last update: Mon Oct  7 09:48:36 2024
  65201 65012
    220.10.0.81 (spine11) from spine11(220.10.0.81) (6.0.0.10)
      Origin incomplete, valid, external, multipath soo nhg
      Extended Community: SoO:6.0.0.7:1234
      Last update: Mon Oct  7 09:48:36 2024
  65201 65012
    220.10.0.97 (spine11) from spine11(220.10.0.97) (6.0.0.10)
      Origin incomplete, valid, external, multipath soo nhg
      Extended Community: SoO:6.0.0.7:1234
      Last update: Mon Oct  7 09:48:36 2024
  65201 65012
    220.11.0.81 (spine12) from spine12(220.11.0.81) (6.0.0.11)
      Origin incomplete, valid, external, multipath soo nhg
      Extended Community: SoO:6.0.0.7:1234
      Last update: Mon Oct  7 09:48:36 2024
  65201 65012
    220.11.0.97 (spine12) from spine12(220.11.0.97) (6.0.0.11)
      Origin incomplete, valid, external, multipath soo nhg
      Extended Community: SoO:6.0.0.7:1234
      Last update: Mon Oct  7 09:48:36 2024
mlx-3700-68#

Ticket: #3951671
Signed-off-by: Karthikeya Venkat Muppalla <kmuppalla@nvidia.com>
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Karthikeya Venkat Muppalla committed Feb 12, 2025
1 parent 9c70740 commit fcb9407
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Showing 5 changed files with 108 additions and 13 deletions.
63 changes: 61 additions & 2 deletions bgpd/bgp_per_src_nhg.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -91,7 +91,8 @@ void bgp_process_route_with_soo_attr(struct bgp *bgp, struct bgp_dest *dest,
struct in_addr *ipaddr, bool is_add,
bool soo_attr_del);
static struct bgp_dest_soo_hash_entry *
bgp_dest_soo_find(struct bgp_per_src_nhg_hash_entry *nhe, struct prefix *p);
bgp_dest_soo_find(struct bgp_per_src_nhg_hash_entry *nhe,
const struct prefix *p);

/*temp code, will be deleted after timer wheel test*/
void bgp_soo_route_select_nh_eval(struct event *event);
Expand Down Expand Up @@ -772,7 +773,8 @@ static void *bgp_dest_soo_alloc(void *p)
}

static struct bgp_dest_soo_hash_entry *
bgp_dest_soo_find(struct bgp_per_src_nhg_hash_entry *nhe, struct prefix *p)
bgp_dest_soo_find(struct bgp_per_src_nhg_hash_entry *nhe,
const struct prefix *p)
{
struct bgp_dest_soo_hash_entry tmp;
struct bgp_dest_soo_hash_entry *dest_he;
Expand Down Expand Up @@ -1627,4 +1629,61 @@ void bgp_process_mpath_route_soo_attr(struct bgp *bgp, afi_t afi,
}
}

static bool is_nhg_per_origin_configured(struct bgp *bgp)
{
afi_t afi;
safi_t safi;
bool nhg_per_origin = false;
FOREACH_AFI_SAFI (afi, safi) {
if (CHECK_FLAG(bgp->per_src_nhg_flags[afi][safi],
BGP_FLAG_NHG_PER_ORIGIN)) {
nhg_per_origin = true;
}
}

return nhg_per_origin;
}

bool is_path_using_soo_nhg(const struct prefix *p, struct bgp_path_info *path,
uint32_t *soo_nhg, struct in_addr *soo)
{
bool using_soo_nhg = false;
if (is_nhg_per_origin_configured(path->peer->bgp) &&
route_has_soo_attr(path)) {
struct in_addr in;
bool is_soo_route = bgp_is_soo_route(path->net, path, &in);
struct bgp_per_src_nhg_hash_entry *nhe = NULL;
struct ipaddr ip;

memset(&ip, 0, sizeof(struct ipaddr));
SET_IPADDR_V4(&ip);
memcpy(&ip.ipaddr_v4, &in, sizeof(ip.ipaddr_v4));
nhe = bgp_per_src_nhg_find(path->peer->bgp, &ip);

if (nhe) {
if (is_soo_route) {
if (bf_test_index(
nhe->bgp_selected_soo_route_pi_bitmap,
path->peer->bit_index)) {
using_soo_nhg = true;
*soo_nhg = nhe->nhg_id;
memcpy(soo, &in,
sizeof(struct in_addr));
}
} else {
struct bgp_dest_soo_hash_entry *dest_he;
dest_he = bgp_dest_soo_find(nhe, p);
if (CHECK_FLAG(
dest_he->flags,
DEST_PRESENT_IN_NHGID_USE_LIST)) {
using_soo_nhg = true;
*soo_nhg = nhe->nhg_id;
memcpy(soo, &in,
sizeof(struct in_addr));
}
}
}
}

return using_soo_nhg;
}
2 changes: 2 additions & 0 deletions bgpd/bgp_per_src_nhg.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -174,4 +174,6 @@ void bgp_process_route_transition_between_nhid(struct bgp *bgp, struct bgp_dest
void bgp_process_mpath_route_soo_attr(struct bgp *bgp, afi_t afi,
struct bgp_dest *dest, struct bgp_path_info *new_best,
bool is_add);
bool is_path_using_soo_nhg(const struct prefix *p, struct bgp_path_info *path,
uint32_t *soo_nhg, struct in_addr *soo);
#endif /* _BGP_PER_SRC_NHG_H */
48 changes: 41 additions & 7 deletions bgpd/bgp_route.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -9784,6 +9784,8 @@ static void route_vty_short_status_out(struct vty *vty,
json_object *json_path)
{
enum rpki_states rpki_state = RPKI_NOT_BEING_USED;
uint32_t soo_nhg = 0;
struct in_addr soo_ip;

if (json_path) {

Expand Down Expand Up @@ -9868,9 +9870,13 @@ static void route_vty_short_status_out(struct vty *vty,
vty_out(vty, "d");
else if (CHECK_FLAG(path->flags, BGP_PATH_SELECTED))
vty_out(vty, ">");
else if (CHECK_FLAG(path->flags, BGP_PATH_MULTIPATH))
vty_out(vty, "=");
else
else if (CHECK_FLAG(path->flags, BGP_PATH_MULTIPATH)) {
if (is_path_using_soo_nhg(p, path, &soo_nhg, &soo_ip)) {
vty_out(vty, "+");
} else {
vty_out(vty, "=");
}
} else
vty_out(vty, " ");

/* Internal route. */
Expand Down Expand Up @@ -11004,6 +11010,8 @@ void route_vty_out_detail(struct vty *vty, struct bgp *bgp, struct bgp_dest *bn,
char time_buf[64];
struct bgp_path_info *bpi_ultimate =
bgp_get_imported_bpi_ultimate(path);
uint32_t soo_nhg = 0;
struct in_addr soo_ip;

if (json_paths) {
json_path = json_object_new_object();
Expand Down Expand Up @@ -11596,8 +11604,13 @@ void route_vty_out_detail(struct vty *vty, struct bgp *bgp, struct bgp_dest *bn,
(CHECK_FLAG(path->flags, BGP_PATH_SELECTED) && bgp_path_info_mpath_count(path) > 1)) {
if (json_paths)
json_object_boolean_true_add(json_path, "multipath");
else
vty_out(vty, ", multipath");
else {
if (is_path_using_soo_nhg(p, path, &soo_nhg, &soo_ip)) {
vty_out(vty, ", multipath soo nhg");
} else {
vty_out(vty, ", multipath");
}
}
}

// Mark the bestpath(s)
Expand Down Expand Up @@ -12719,6 +12732,9 @@ void route_vty_out_detail_header(struct vty *vty, struct bgp *bgp,
uint32_t ttl = 0;
uint32_t bos = 0;
uint32_t exp = 0;
uint32_t soo_nhg = 0;
struct in_addr soo;
bool path_using_soo_nhg = false;

mpls_lse_decode(dest->local_label, &label, &ttl, &exp, &bos);

Expand All @@ -12745,10 +12761,16 @@ void route_vty_out_detail_header(struct vty *vty, struct bgp *bgp,
bgp_evpn_route2json((struct prefix_evpn *)p, json);
}
} else {
for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) {
if (is_path_using_soo_nhg(p, pi, &soo_nhg, &soo)) {
path_using_soo_nhg = true;
break;
}
}

if (!json) {
vty_out(vty,
"BGP routing table entry for %s%s%pFX, version %" PRIu64
"\n",
"BGP routing table entry for %s%s%pFX, version %" PRIu64,
(((safi == SAFI_MPLS_VPN ||
safi == SAFI_ENCAP) &&
prd)
Expand All @@ -12758,6 +12780,18 @@ void route_vty_out_detail_header(struct vty *vty, struct bgp *bgp,
: ""),
safi == SAFI_MPLS_VPN && prd ? ":" : "", p,
dest->version);
if (path_using_soo_nhg) {
struct ipaddr ip;
memset(&ip, 0, sizeof(ip));
SET_IPADDR_V4(&ip);
memcpy(&ip.ipaddr_v4, &soo,
sizeof(ip.ipaddr_v4));
vty_out(vty,
" SoO:%pIA, multipath soo nhg:%d\n",
&ip, soo_nhg);
} else {
vty_out(vty, "\n");
}

} else {
if (incremental_print) {
Expand Down
6 changes: 3 additions & 3 deletions bgpd/bgp_route.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -57,9 +57,9 @@ enum bgp_show_adj_route_type {
};


#define BGP_SHOW_SCODE_HEADER \
"Status codes: s suppressed, d damped, " \
"h history, u unsorted, * valid, > best, = multipath,\n" \
#define BGP_SHOW_SCODE_HEADER \
"Status codes: s suppressed, d damped, " \
"h history, u unsorted, * valid, > best, = multipath, + multipath nhg,\n" \
" i internal, r RIB-failure, S Stale, R Removed\n"
#define BGP_SHOW_OCODE_HEADER \
"Origin codes: i - IGP, e - EGP, ? - incomplete\n"
Expand Down
2 changes: 1 addition & 1 deletion bgpd/bgp_vty.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -20433,7 +20433,7 @@ static void show_bgp_soo_entry(struct bgp_per_src_nhg_hash_entry *soo_entry,
vty_out(vty, " %s", pfxprint);
if (CHECK_FLAG(bgp_dest_soo_entry->flags,
DEST_PRESENT_IN_NHGID_USE_LIST)) {
vty_out(vty, "uses SoO NHG");
vty_out(vty, " uses SoO NHG");
}

vty_print_bitfield(vty, " Selected path info bitmap",
Expand Down

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