zebra: fpm_listener start adding data about nexthops

Start some very small bit of work into the fpm_listener
about RTM_NEWNEXTHOPS.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>

diff --git a/zebra/fpm_listener.c b/zebra/fpm_listener.c
index 97717ee8727592a671f2a6dd52959f92e7bd0143..17ce9ac7c4f6de0097daec457e59d3c9e9e380d2 100644 (file)
--- a/zebra/fpm_listener.c
+++ b/zebra/fpm_listener.c
@@ -212,6 +212,12 @@ netlink_msg_type_to_s(uint16_t type)
        case RTM_DELROUTE:
                return "Del route";
 
+       case RTM_NEWNEXTHOP:
+               return "New Nexthop Group";
+
+       case RTM_DELNEXTHOP:
+               return "Del Nexthop Group";
+
        default:
                return "Unknown";
        }
@@ -303,6 +309,7 @@ struct netlink_msg_ctx {
        struct rtattr *dest;
        struct rtattr *src;
        int *metric;
+       unsigned int *nhgid;
 
        const char *err_msg;
 };
@@ -466,6 +473,10 @@ static int parse_route_msg(struct netlink_msg_ctx *ctx)
        if (rtattr)
                ctx->metric = (int *)RTA_DATA(rtattr);
 
+       rtattr = rtattrs[RTA_NH_ID];
+       if (rtattr)
+               ctx->nhgid = (unsigned int *)RTA_DATA(rtattr);
+
        gateway = rtattrs[RTA_GATEWAY];
        oif = rtattrs[RTA_OIF];
        if (gateway || oif) {
@@ -524,6 +535,8 @@ static int netlink_msg_ctx_snprint(struct netlink_msg_ctx *ctx, char *buf,
        if (ctx->metric)
                cur += snprintf(cur, end - cur, ", Metric: %d", *ctx->metric);
 
+       if (ctx->nhgid)
+               cur += snprintf(cur, end - cur, ", nhgid: %u", *ctx->nhgid);
        for (i = 0; i < ctx->num_nhs; i++) {
                cur += snprintf(cur, end - cur, "\n ");
                nh = &ctx->nhs[i];
@@ -589,8 +602,10 @@ parse_netlink_msg(char *buf, size_t buf_len)
                        break;
 
                default:
-                       fprintf(stdout, "Ignoring unknown netlink message - Type: %d\n",
-                             hdr->nlmsg_type);
+                       fprintf(stdout,
+                               "Ignoring netlink message - Type: %s(%d)\n",
+                               netlink_msg_type_to_s(hdr->nlmsg_type),
+                               hdr->nlmsg_type);
                }
        }
 }