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entirely redesign of collector network engine

/*************************************************************************
* (C) 2022 CloudSigma AG - Sofia/Bulgaria
*  by Michael Pounov <misho@elwix.org>
**************************************************************************/
#include "fwsync.h"


void
fwsync_sndpkt_state(void *context, int pending)
{
	struct fws_sndpkt *pkt;
	struct mbuf *m2, *m;
	int e;

	DTRACE();

	printf("pending=%d\n", pending);

	do {
		mtx_lock(&fws_mtx_c);
		pkt = TAILQ_FIRST(&fwsync_sndpkt);
		TAILQ_REMOVE(&fwsync_sndpkt, pkt, sp_next);
		mtx_unlock(&fws_mtx_c);

		if (!(fws_cfg.cfg.on & CFG_SYNC_COLLECTOR))
			continue;

		m = m_gethdr(M_NOWAIT, MT_DATA);
		if (!m)
			continue;

		memcpy(mtod(m, struct fws_proto *), &pkt->sp_proto, sizeof pkt->sp_proto);
		m->m_len = sizeof pkt->sp_proto;
		m_fixhdr(m);

		if ((fws_ctx.config & (CTX_COLLECTOR_2_ONLINE | CTX_COLLECTOR_2_READY)) == 
				(CTX_COLLECTOR_2_ONLINE | CTX_COLLECTOR_2_READY)) {
			m2 = m_copypacket(m, M_NOWAIT);
			if (!m2) {
				printf("error in copypacket for second collector\n");
				goto out;
			}
			e = sosend(fws_ctx.sockz[CFG_SYNC_ADDR_COLLECTOR_2], 
					&fws_cfg.cfg_addr[CFG_SYNC_ADDR_COLLECTOR_2].addr, NULL, 
					m2, NULL, 0, curthread);
			if (e && e != EAGAIN)
				printf("error in collector %d handler #%d\n", CFG_SYNC_ADDR_COLLECTOR_2, e);
		}

		if ((fws_ctx.config & (CTX_COLLECTOR_1_ONLINE | CTX_COLLECTOR_1_READY)) == 
				(CTX_COLLECTOR_1_ONLINE | CTX_COLLECTOR_1_READY)) {
			m2 = m_copypacket(m, M_NOWAIT);
			if (!m2) {
				printf("error in copypacket for first collector\n");
				goto out;
			}
			e = sosend(fws_ctx.sockz[CFG_SYNC_ADDR_COLLECTOR_1], 
					&fws_cfg.cfg_addr[CFG_SYNC_ADDR_COLLECTOR_1].addr, NULL, 
					m2, NULL, 0, curthread);
			if (e && e != EAGAIN)
				printf("error in collector %d handler #%d\n", CFG_SYNC_ADDR_COLLECTOR_1, e);
		}
out:
		m_freem(m);
	} while (--pending);
}

int
fwsync_state_handler(void *arg)
{
	struct ipfw_flow_id *pkt = arg;
	struct fws_proto *spkt;
	struct fws_sndpkt *p;

	DTRACE();

	if (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);
	if (!p) {
		mtx_unlock(&fws_mtx_c);
		return 0;
	} else
		spkt = &p->sp_proto;

	spkt->fws_version = FWS_PKTVER_STATE;
	spkt->fws_fib = pkt->fib;
	spkt->fws_proto = pkt->proto;
	spkt->fws_addrtype = pkt->addr_type;
	spkt->fws_sport = pkt->src_port;
	spkt->fws_dport = pkt->dst_port;

	switch (pkt->addr_type) {
		case 4:
			spkt->fws_saddr.s_addr = pkt->src_ip;
			spkt->fws_daddr.s_addr = pkt->dst_ip;
			spkt->fws_scopeid = 0;
			break;
		case 6:
			memcpy(&spkt->fws_saddr6, &pkt->src_ip6, sizeof spkt->fws_saddr6);
			memcpy(&spkt->fws_daddr6, &pkt->dst_ip6, sizeof spkt->fws_daddr6);
			spkt->fws_scopeid = pkt->flow_id6;
			break;
		default:
			free(p, M_FWSYNC);
			mtx_unlock(&fws_mtx_c);
			return EINVAL;
	}

	TAILQ_INSERT_TAIL(&fwsync_sndpkt, p, sp_next);

	mtx_unlock(&fws_mtx_c);

	taskqueue_enqueue(fws_tq, &fws_sndpkt_task);
	return 0;
}

int
fwsync_alias_handler(void *arg)
{
	DTRACE();

	return 0;
}