Add a packet sequence number

[lttng-modules.git] / lttng-ring-buffer-client.h

diff --git a/lttng-ring-buffer-client.h b/lttng-ring-buffer-client.h
index 7055e770734e52a6f339f3c6b78e1c7913f07a1d..34493333bcc8a0055db535cf262a319e09b92021 100644 (file)
--- a/lttng-ring-buffer-client.h
+++ b/lttng-ring-buffer-client.h
@@ -64,6 +64,7 @@ struct packet_header {
                uint64_t timestamp_end;         /* Cycle count at subbuffer end */
                uint64_t content_size;          /* Size of data in subbuffer */
                uint64_t packet_size;           /* Subbuffer size (include padding) */
+               uint64_t packet_seq_num;        /* Packet sequence number */
                unsigned long events_discarded; /*
                                                 * Events lost in this subbuffer since
                                                 * the beginning of the trace.
@@ -355,6 +356,9 @@ static void client_buffer_begin(struct lib_ring_buffer *buf, u64 tsc,
        header->ctx.timestamp_end = 0;
        header->ctx.content_size = ~0ULL; /* for debugging */
        header->ctx.packet_size = ~0ULL;
+       header->ctx.packet_seq_num = chan->backend.num_subbuf * \
+                                    buf->backend.buf_cnt[subbuf_idx].seq_cnt + \
+                                    subbuf_idx;
        header->ctx.events_discarded = 0;
        header->ctx.cpu_id = buf->backend.cpu;
 }
@@ -470,6 +474,17 @@ static int client_current_timestamp(const struct lib_ring_buffer_config *config,
        return 0;
 }
 
+static int client_sequence_number(const struct lib_ring_buffer_config *config,
+                       struct lib_ring_buffer *buf,
+                       uint64_t *seq)
+{
+       struct packet_header *header = client_packet_header(config, buf);
+
+       *seq = header->ctx.packet_seq_num;
+
+       return 0;
+}
+
 static const struct lib_ring_buffer_config client_config = {
        .cb.ring_buffer_clock_read = client_ring_buffer_clock_read,
        .cb.record_header_size = client_record_header_size,
@@ -700,6 +715,7 @@ static struct lttng_transport lttng_relay_transport = {
                .packet_size = client_packet_size,
                .stream_id = client_stream_id,
                .current_timestamp = client_current_timestamp,
+               .sequence_number = client_sequence_number,
        },
 };