mirror of https://github.com/FRRouting/frr.git
Merge pull request #9316 from ton31337/fix/send_best_path_reason_for_zebra
bgpd: Send BGP best path reason to Zebra
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commit
d9654571f9
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@ -8433,8 +8433,7 @@ enum bgp_display_type {
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normal_list,
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};
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static const char *
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bgp_path_selection_reason2str(enum bgp_path_selection_reason reason)
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const char *bgp_path_selection_reason2str(enum bgp_path_selection_reason reason)
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{
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switch (reason) {
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case bgp_path_selection_none:
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@ -90,6 +90,9 @@ enum bgp_show_adj_route_type {
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/* Maximum number of sids we can process or send with a prefix. */
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#define BGP_MAX_SIDS 6
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/* Maximum buffer length for storing BGP best path selection reason */
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#define BGP_MAX_SELECTION_REASON_STR_BUF 32
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/* Error codes for handling NLRI */
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#define BGP_NLRI_PARSE_OK 0
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#define BGP_NLRI_PARSE_ERROR_PREFIX_OVERFLOW -1
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@ -803,4 +806,6 @@ extern void bgp_aggregate_toggle_suppressed(struct bgp_aggregate *aggregate,
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const struct prefix *p, afi_t afi,
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safi_t safi, bool suppress);
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extern void subgroup_announce_reset_nhop(uint8_t family, struct attr *attr);
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const char *
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bgp_path_selection_reason2str(enum bgp_path_selection_reason reason);
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#endif /* _QUAGGA_BGP_ROUTE_H */
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@ -1490,6 +1490,8 @@ void bgp_zebra_announce(struct bgp_dest *dest, const struct prefix *p,
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if (is_add && CHECK_FLAG(bm->flags, BM_FLAG_SEND_EXTRA_DATA_TO_ZEBRA)) {
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struct bgp_zebra_opaque bzo = {};
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const char *reason =
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bgp_path_selection_reason2str(dest->reason);
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strlcpy(bzo.aspath, info->attr->aspath->str,
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sizeof(bzo.aspath));
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@ -1503,6 +1505,9 @@ void bgp_zebra_announce(struct bgp_dest *dest, const struct prefix *p,
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strlcpy(bzo.lcommunity, info->attr->lcommunity->str,
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sizeof(bzo.lcommunity));
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strlcpy(bzo.selection_reason, reason,
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sizeof(bzo.selection_reason));
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SET_FLAG(api.message, ZAPI_MESSAGE_OPAQUE);
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api.opaque.length = MIN(sizeof(struct bgp_zebra_opaque),
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ZAPI_MESSAGE_OPAQUE_LENGTH);
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@ -36,6 +36,12 @@ struct bgp_zebra_opaque {
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/* Show at least 10 large-communities AA:BB:CC */
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char lcommunity[LCOMMUNITY_SIZE * 30];
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/* 32 bytes seems enough because of
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* bgp_path_selection_confed_as_path which is
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* `Confederation based AS Path`.
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*/
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char selection_reason[BGP_MAX_SELECTION_REASON_STR_BUF];
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};
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static_assert(sizeof(struct bgp_zebra_opaque) <= ZAPI_MESSAGE_OPAQUE_LENGTH,
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@ -449,6 +449,8 @@ static void zebra_show_ip_route_opaque(struct vty *vty, struct route_entry *re,
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bzo.community);
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json_object_string_add(json, "largeCommunities",
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bzo.lcommunity);
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json_object_string_add(json, "selectionReason",
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bzo.selection_reason);
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} else {
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vty_out(vty, " AS-Path : %s\n", bzo.aspath);
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@ -459,6 +461,9 @@ static void zebra_show_ip_route_opaque(struct vty *vty, struct route_entry *re,
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if (bzo.lcommunity[0] != '\0')
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vty_out(vty, " Large-Communities: %s\n",
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bzo.lcommunity);
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vty_out(vty, " Selection reason : %s\n",
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bzo.selection_reason);
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}
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}
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default:
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