[RFC v2 08/12] pcapng: make queue optional

[Stephen Hemminger <stephen@networkplumber.org>]

The queue field is optional in pcapng received packet.
Use UINT16_MAX as flag value.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 lib/pcapng/rte_pcapng.c | 7 ++++---
 lib/pcapng/rte_pcapng.h | 4 ++--
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/lib/pcapng/rte_pcapng.c b/lib/pcapng/rte_pcapng.c
index 6db5d4da50..c27cb9b48e 100644
--- a/lib/pcapng/rte_pcapng.c
+++ b/lib/pcapng/rte_pcapng.c
@@ -500,8 +500,8 @@ rte_pcapng_insert(struct rte_mbuf *m, uint32_t queue,
 
 	uint16_t optlen = pcapng_optlen(sizeof(flags));
 
-	/* make queue optional? */
-	optlen += pcapng_optlen(sizeof(queue));
+	if (queue != UINT16_MAX)
+		optlen += pcapng_optlen(sizeof(queue));
 
 	/* does packet have valid RSS hash to include */
 	bool rss_hash = (direction == RTE_PCAPNG_DIRECTION_IN &&
@@ -531,7 +531,8 @@ rte_pcapng_insert(struct rte_mbuf *m, uint32_t queue,
 	}
 
 	opt = pcapng_add_option(opt, PCAPNG_EPB_FLAGS, &flags, sizeof(flags));
-	opt = pcapng_add_option(opt, PCAPNG_EPB_QUEUE, &queue, sizeof(queue));
+	if (queue != UINT16_MAX)
+		opt = pcapng_add_option(opt, PCAPNG_EPB_QUEUE, &queue, sizeof(queue));
 
 	if (rss_hash) {
 		uint8_t hash_opt[5];
diff --git a/lib/pcapng/rte_pcapng.h b/lib/pcapng/rte_pcapng.h
index 4914ac9622..48aaab365c 100644
--- a/lib/pcapng/rte_pcapng.h
+++ b/lib/pcapng/rte_pcapng.h
@@ -135,8 +135,8 @@ rte_pcapng_copy(uint16_t port_id, uint32_t queue,
  * @param m
  *   The mbuf to modify.
  * @param queue
- *   The queue on the Ethernet port where packet was received
- *   or is going to be transmitted.
+ *   The queue on the Ethernet port where packet was received or is going to be transmitted.
+ *   Optional: use UINT16_MAX if not specified.
  * @param direction
  *   The direction of the packer: receive, transmit or unknown.
  * @param orig_len
-- 
2.47.2