pimd, lib: adding support for MLAG Message processing at PIM

This includes:
1. Defining message formats
2. Stream Decoding after receiving the message at PIM
3. Handling MLAG UP & Down Notifications

Signed-off-by: Satheesh Kumar K <sathk@cumulusnetworks.com>

1 files changed, 130 insertions, 0 deletions

diff --git a/lib/mlag.c b/lib/mlag.c
index acdc662924..7aac571da6 100644
--- a/lib/mlag.c
+++ b/lib/mlag.c
@@ -39,3 +39,133 @@ char *mlag_role2str(enum mlag_role role, char *buf, size_t size)
 
 	return buf;
 }
+
+char *zebra_mlag_lib_msgid_to_str(enum mlag_msg_type msg_type, char *buf,
+				  size_t size)
+{
+	switch (msg_type) {
+	case MLAG_REGISTER:
+		snprintf(buf, size, "Register");
+		break;
+	case MLAG_DEREGISTER:
+		snprintf(buf, size, "De-Register");
+		break;
+	case MLAG_MROUTE_ADD:
+		snprintf(buf, size, "Mroute add");
+		break;
+	case MLAG_MROUTE_DEL:
+		snprintf(buf, size, "Mroute del");
+		break;
+	case MLAG_DUMP:
+		snprintf(buf, size, "Mlag Replay");
+		break;
+	case MLAG_MROUTE_ADD_BULK:
+		snprintf(buf, size, "Mroute Add Batch");
+		break;
+	case MLAG_MROUTE_DEL_BULK:
+		snprintf(buf, size, "Mroute Del Batch");
+		break;
+	case MLAG_STATUS_UPDATE:
+		snprintf(buf, size, "Mlag Status");
+		break;
+	case MLAG_VXLAN_UPDATE:
+		snprintf(buf, size, "Mlag vxlan update");
+		break;
+	case MLAG_PEER_FRR_STATUS:
+		snprintf(buf, size, "Mlag Peer FRR Status");
+		break;
+	default:
+		snprintf(buf, size, "Unknown %d", msg_type);
+		break;
+	}
+	return buf;
+}
+
+
+int zebra_mlag_lib_decode_mlag_hdr(struct stream *s, struct mlag_msg *msg)
+{
+	if (s == NULL || msg == NULL)
+		return -1;
+
+	STREAM_GETL(s, msg->msg_type);
+	STREAM_GETW(s, msg->data_len);
+	STREAM_GETW(s, msg->msg_cnt);
+	return 0;
+stream_failure:
+	return -1;
+}
+
+int zebra_mlag_lib_decode_mroute_add(struct stream *s,
+				     struct mlag_mroute_add *msg)
+{
+	if (s == NULL || msg == NULL)
+		return -1;
+
+	STREAM_GET(msg->vrf_name, s, VRF_NAMSIZ);
+	STREAM_GETL(s, msg->source_ip);
+	STREAM_GETL(s, msg->group_ip);
+	STREAM_GETL(s, msg->cost_to_rp);
+	STREAM_GETL(s, msg->owner_id);
+	STREAM_GETC(s, msg->am_i_dr);
+	STREAM_GETC(s, msg->am_i_dual_active);
+	STREAM_GETL(s, msg->vrf_id);
+	STREAM_GET(msg->intf_name, s, INTERFACE_NAMSIZ);
+	return 0;
+stream_failure:
+	return -1;
+}
+
+int zebra_mlag_lib_decode_mroute_del(struct stream *s,
+				     struct mlag_mroute_del *msg)
+{
+	if (s == NULL || msg == NULL)
+		return -1;
+
+	STREAM_GET(msg->vrf_name, s, VRF_NAMSIZ);
+	STREAM_GETL(s, msg->source_ip);
+	STREAM_GETL(s, msg->group_ip);
+	STREAM_GETL(s, msg->owner_id);
+	STREAM_GETL(s, msg->vrf_id);
+	STREAM_GET(msg->intf_name, s, INTERFACE_NAMSIZ);
+	return 0;
+stream_failure:
+	return -1;
+}
+
+int zebra_mlag_lib_decode_mlag_status(struct stream *s, struct mlag_status *msg)
+{
+	if (s == NULL || msg == NULL)
+		return -1;
+
+	STREAM_GET(msg->peerlink_rif, s, INTERFACE_NAMSIZ);
+	STREAM_GETL(s, msg->my_role);
+	STREAM_GETL(s, msg->peer_state);
+	return 0;
+stream_failure:
+	return -1;
+}
+
+int zebra_mlag_lib_decode_vxlan_update(struct stream *s, struct mlag_vxlan *msg)
+{
+	if (s == NULL || msg == NULL)
+		return -1;
+
+	STREAM_GETL(s, msg->anycast_ip);
+	STREAM_GETL(s, msg->local_ip);
+	return 0;
+
+stream_failure:
+	return -1;
+}
+
+int zebra_mlag_lib_decode_frr_status(struct stream *s,
+				     struct mlag_frr_status *msg)
+{
+	if (s == NULL || msg == NULL)
+		return -1;
+
+	STREAM_GETL(s, msg->frr_state);
+	return 0;
+stream_failure:
+	return -1;
+}