--- fwsync/driver/fwsync_workers.c	2022/07/11 12:58:58	1.3
+++ fwsync/driver/fwsync_workers.c	2022/08/04 00:24:39	1.8
@@ -5,6 +5,82 @@
 #include "fwsync.h"
 
 
+static int
+fwsync_add_state_4(struct ipfw_flow_id *fid, u_int ruleid, u_short rulenum)
+{
+	struct ip_fw *rule = NULL;
+	struct ip_fw_args args;
+	struct ipfw_dyn_info info;
+	ipfw_insn cmd;
+
+	DTRACE();
+
+	memset(&cmd, 0, sizeof cmd);
+	cmd.opcode = O_KEEP_STATE;
+	memset(&info, 0, sizeof info);
+	memset(&args, 0, sizeof args);
+	memcpy(&args.f_id, fid, sizeof args.f_id);
+
+	rule = ipfw_dyn_lookup_state(&args, NULL, 0, &cmd, &info);
+	printf("rule=%p\n", rule);
+	return 0;
+//	return ipfw_dyn_install_sync_state(fid, rule, ruleid, rulenum);
+}
+
+static int
+fwsync_add_state_6(struct ipfw_flow_id *fid, u_int ruleid, u_short rulenum)
+{
+	DTRACE();
+
+	return 0;
+}
+
+int
+fwsync_add_state(const struct fws_proto *pkt)
+{
+	struct ipfw_flow_id fid;
+
+	DTRACE();
+
+	memset(&fid, 0, sizeof fid);
+	fid.fib = pkt->fws_fib;
+	fid.proto = pkt->fws_proto;
+	fid.addr_type = pkt->fws_addrtype;
+	fid.src_port = pkt->fws_sport;
+	fid.dst_port = pkt->fws_dport;
+	switch (pkt->fws_addrtype) {
+		case 4:
+			fid.src_ip = pkt->fws_saddr.s_addr;
+			fid.dst_ip = pkt->fws_daddr.s_addr;
+			break;
+		case 6:
+			memcpy(&fid.src_ip6, &pkt->fws_saddr6, sizeof fid.src_ip6);
+			memcpy(&fid.dst_ip6, &pkt->fws_daddr6, sizeof fid.dst_ip6);
+			fid.flow_id6 = pkt->fws_scopeid;
+			break;
+		default:
+			return EINVAL;
+	}
+
+	if (pkt->fws_addrtype == 4)
+		fwsync_add_state_4(&fid, pkt->fws_ruleid, pkt->fws_rulenum);
+	else if (pkt->fws_addrtype == 6)
+		fwsync_add_state_6(&fid, pkt->fws_ruleid, pkt->fws_rulenum);
+	else
+		return EINVAL;
+
+	return 0;
+}
+
+int
+fwsync_add_alias(const struct fws_proto *pkt)
+{
+	DTRACE();
+
+	return 0;
+}
+
+
 void
 fwsync_sndpkt_handler(void *context, int pending)
 {
@@ -19,15 +95,23 @@ fwsync_sndpkt_handler(void *context, int pending)
 	do {
 		mtx_lock(&fws_mtx_c);
 		pkt = TAILQ_FIRST(&fwsync_sndpkt);
-		TAILQ_REMOVE(&fwsync_sndpkt, pkt, sp_next);
+		if (pkt)
+			TAILQ_REMOVE(&fwsync_sndpkt, pkt, sp_next);
 		mtx_unlock(&fws_mtx_c);
 
-		if (!(fws_cfg.cfg.on & CFG_SYNC_COLLECTOR))
+		if (!pkt)	/* sending queue is empty */
+			break;
+
+		if (!(fws_cfg.cfg.on & CFG_SYNC_COLLECTOR)) {
+			free(pkt, M_FWSYNC);
 			continue;
+		}
 
 		m = m_gethdr(M_NOWAIT, MT_DATA);
-		if (!m)
+		if (!m) {
+			free(pkt, M_FWSYNC);
 			continue;
+		}
 
 		memcpy(mtod(m, struct fws_proto *), &pkt->sp_proto, sizeof pkt->sp_proto);
 		m->m_len = sizeof pkt->sp_proto;
@@ -62,24 +146,26 @@ fwsync_sndpkt_handler(void *context, int pending)
 		}
 out:
 		m_freem(m);
+		free(pkt, M_FWSYNC);
 	} while (--pending);
 }
 
 int
-fwsync_state_handler(void *arg)
+fwsync_state_handler(const void *arg, const void *extdata)
 {
-	struct ipfw_flow_id *pkt = arg;
+	const struct ipfw_flow_id *pkt = arg;
+	const struct ipfw_dyn_hook_extdata *edata = extdata;
 	struct fws_proto *spkt;
 	struct fws_sndpkt *p;
 
 	DTRACE();
 
-	if (pkt->addr_type == 1)
+	if (!pkt || pkt->addr_type == 1)
 		return 0;	/* skip ethernet packet */
 
 	mtx_lock(&fws_mtx_c);
 
-	p = malloc(sizeof(struct fws_proto), M_FWSYNC, M_NOWAIT | M_ZERO);
+	p = malloc(sizeof(struct fws_sndpkt), M_FWSYNC, M_NOWAIT | M_ZERO);
 	if (!p) {
 		mtx_unlock(&fws_mtx_c);
 		return 0;
@@ -88,6 +174,8 @@ fwsync_state_handler(void *arg)
 
 	spkt->fws_version = FWS_PKTVER_STATE;
 	spkt->fws_fib = pkt->fib;
+	spkt->fws_ruleid = edata->ruleid;
+	spkt->fws_rulenum = edata->rulenum;
 	spkt->fws_proto = pkt->proto;
 	spkt->fws_addrtype = pkt->addr_type;
 	spkt->fws_sport = pkt->src_port;
@@ -119,9 +207,42 @@ fwsync_state_handler(void *arg)
 }
 
 int
-fwsync_alias_handler(void *arg)
+fwsync_alias_handler(const void *arg, const void *extdata)
 {
+	const struct alias_link *lnk = arg;
+	struct fws_proto *spkt;
+	struct fws_sndpkt *p;
+
 	DTRACE();
 
+	if (!lnk || lnk->link_type >= IPPROTO_MAX)
+		return 0;
+
+	mtx_lock(&fws_mtx_c);
+
+	p = malloc(sizeof(struct fws_sndpkt), M_FWSYNC, M_NOWAIT | M_ZERO);
+	if (!p) {
+		mtx_unlock(&fws_mtx_c);
+		return 0;
+	} else
+		spkt = &p->sp_proto;
+
+	spkt->fws_version = FWS_PKTVER_ALIAS;
+	spkt->fws_proto = lnk->link_type;
+	spkt->fws_addrtype = 4;
+	spkt->fws_sport = lnk->src_port;
+	spkt->fws_dport = lnk->dst_port;
+	spkt->fws_aport = lnk->alias_port;
+	spkt->fws_pport = lnk->proxy_port;
+	spkt->fws_saddr.s_addr = lnk->src_addr.s_addr;
+	spkt->fws_daddr.s_addr = lnk->dst_addr.s_addr;
+	spkt->fws_aaddr.s_addr = lnk->alias_addr.s_addr;
+	spkt->fws_paddr.s_addr = lnk->proxy_addr.s_addr;
+
+	TAILQ_INSERT_TAIL(&fwsync_sndpkt, p, sp_next);
+
+	mtx_unlock(&fws_mtx_c);
+
+	taskqueue_enqueue(fws_tq, &fws_sndpkt_task);
 	return 0;
 }