TT#14008 eliminate duplicate packets_lost counters

This solves inconsistent stat output

Change-Id: Ic4c010fbceb83d1f8d5fffecacb3c65a436bfeae
(cherry picked from commit 785ed90bba)

daemon/call.c

@@ -2700,7 +2700,7 @@ void call_destroy(struct call *c) {
 			ilog(LOG_INFO, "--- SSRC %s%" PRIx32 "%s", FMT_M(se->h.ssrc));
 			ilog(LOG_INFO, "------ Average MOS %" PRIu64 ".%" PRIu64 ", "
 					"lowest MOS %" PRIu64 ".%" PRIu64 " (at %u:%02u), "
-					"highest MOS %" PRIu64 ".%" PRIu64 " (at %u:%02u) lost:%d",
+					"highest MOS %" PRIu64 ".%" PRIu64 " (at %u:%02u) lost:%u",
 				se->average_mos.mos / mos_samples / 10,
 				se->average_mos.mos / mos_samples % 10,
 				se->lowest_mos->mos / 10,
@@ -2711,7 +2711,7 @@ void call_destroy(struct call *c) {
 				se->highest_mos->mos % 10,
 				(unsigned int) (timeval_diff(&se->highest_mos->reported, &c->created) / 1000000) / 60,
 				(unsigned int) (timeval_diff(&se->highest_mos->reported, &c->created) / 1000000) % 60,
-				se->packets_lost);
+				(unsigned int) se->packets_lost);
 next_k:
 			k = g_list_delete_link(k, k);
 		}

daemon/codec.c

@@ -1766,7 +1766,7 @@ static int __handler_func_sequencer(struct media_packet *mp, struct transcode_pa
 		else
 			ilogs(transcoding, LOG_DEBUG, "Ignoring duplicate RTP packet");
 		__transcode_packet_free(packet);
-		atomic64_inc(&ssrc_in->duplicates);
+		ssrc_in_p->duplicates++;
 		goto out;
 	}
 
@@ -1803,7 +1803,7 @@ static int __handler_func_sequencer(struct media_packet *mp, struct transcode_pa
 		obj_put(&ch->h);
 		ch = next_ch;
 
-		atomic64_set(&ssrc_in->packets_lost, ssrc_in_p->sequencer.lost_count);
+		ssrc_in_p->packets_lost = ssrc_in_p->sequencer.lost_count;
 		atomic64_set(&ssrc_in->last_seq, ssrc_in_p->sequencer.ext_seq);
 
 		ilogs(transcoding, LOG_DEBUG, "Processing RTP packet: seq %u, TS %lu",

daemon/media_socket.c

@@ -1287,7 +1287,7 @@ static void __stream_update_stats(struct packet_stream *ps, int have_in_lock) {
 
 	atomic64_add(&ssrc_ctx->packets, stats.basic_stats.packets);
 	atomic64_add(&ssrc_ctx->octets, stats.basic_stats.bytes);
-	atomic64_add(&ssrc_ctx->packets_lost, stats.total_lost);
+	parent->packets_lost += stats.total_lost; // XXX should be atomic?
 	atomic64_set(&ssrc_ctx->last_seq, stats.ext_seq);
 	atomic64_set(&ssrc_ctx->last_ts, stats.timestamp);
 	parent->jitter = stats.jitter;

daemon/rtcp.c

@@ -1332,8 +1332,8 @@ static void transcode_rr(struct rtcp_process_ctx *ctx, struct report_block *rr)
 	if (!packets)
 		goto out;
 
-	unsigned int lost = atomic64_get(&input_ctx->packets_lost);
-	unsigned int dupes = atomic64_get(&input_ctx->duplicates);
+	unsigned int lost = input_ctx->parent->packets_lost;
+	unsigned int dupes = input_ctx->parent->duplicates;
 	unsigned int tot_lost = lost - dupes; // can be negative/rollover
 
 	ilogs(rtcp, LOG_DEBUG, "Substituting RTCP RR SSRC from %s%x%s to %x: %u packets, %u lost, %u duplicates",
@@ -1467,7 +1467,7 @@ static GString *rtcp_sender_report(struct ssrc_sender_report *ssr,
 			uint32_t jitter = se->jitter;
 			mutex_unlock(&se->h.lock);
 
-			uint64_t lost = atomic64_get(&s->packets_lost);
+			uint64_t lost = se->packets_lost;
 			uint64_t tot = atomic64_get(&s->packets);
 
 			*rr = (struct report_block) {

include/ssrc.h

@@ -59,8 +59,6 @@ struct ssrc_ctx {
 	// RTCP stats
 	atomic64 packets,
 		 octets,
-		 packets_lost,
-		 duplicates,
 		 last_seq, // XXX dup with srtp_index?
 		 last_ts;
 
@@ -94,10 +92,13 @@ struct ssrc_entry_call {
 				*highest_mos,
 				average_mos; // contains a running tally of all stats blocks
 	uint16_t no_mos_count; // how many time we where not able to compute MOS due to missing RTT
-	uint32_t packets_lost; // RTCP cumulative number of packets lost
 	unsigned int last_rtt; // last calculated raw rtt without rtt from opposide side
 	unsigned int last_rtt_xr; // last rtt for both legs retreived from RTCP-XR BT-7
 
+	// input only
+	uint32_t packets_lost; // RTCP cumulative number of packets lost
+	uint32_t duplicates;
+
 	// for transcoding
 	// input only
 	packet_sequencer_t sequencer;

kernel-module/xt_RTPENGINE.c

@@ -4142,6 +4142,7 @@ static void rtp_stats(struct rtpengine_target *g, struct rtp_parsed *rtp, s64 ar
 	uint32_t clockrate;
 	uint32_t transit;
 	int32_t d;
+	uint32_t new_seq;
 
 	uint16_t seq = ntohs(rtp->header->seq_num);
 	uint32_t ts = ntohl(rtp->header->timestamp);
@@ -4155,6 +4156,7 @@ static void rtp_stats(struct rtpengine_target *g, struct rtp_parsed *rtp, s64 ar
 	// track sequence numbers and lost frames
 
 	last_seq = s->ext_seq;
+	new_seq = last_seq;
 
 	// old seq or seq reset?
 	old_seq_trunc = last_seq & 0xffff;
@@ -4163,18 +4165,19 @@ static void rtp_stats(struct rtpengine_target *g, struct rtp_parsed *rtp, s64 ar
 		;
 	else if (seq_diff > 0x100) {
 		// reset seq and loss tracker
+		new_seq = seq;
 		s->ext_seq = seq;
 		s->lost_bits = -1;
 	}
 	else {
 		// seq wrap?
-		uint32_t new_seq = (last_seq & 0xffff0000) | seq;
+		new_seq = (last_seq & 0xffff0000) | seq;
 		while (new_seq < last_seq) {
 			new_seq += 0x10000;
 			if ((new_seq & 0xffff0000) == 0) // ext seq wrapped
 				break;
 		}
-		seq_diff = new_seq - s->ext_seq;
+		seq_diff = new_seq - last_seq;
 		s->ext_seq = new_seq;
 
 		// shift loss tracker bit field and count losses
@@ -4195,7 +4198,7 @@ static void rtp_stats(struct rtpengine_target *g, struct rtp_parsed *rtp, s64 ar
 	}
 
 	// track this frame as being seen
-	seq_diff = (s->ext_seq & 0xffff) - seq;
+	seq_diff = (new_seq & 0xffff) - seq;
 	if (seq_diff < (sizeof(s->lost_bits) * 8))
 		s->lost_bits |= (1 << seq_diff);