app/dumpcap: fix mbuf pool ring type

[ upstream commit 27a26d65f8039ec38a49932c4bb73801b4fd62b8 ]

The internal buffer pool used for copies of mbufs captured
needs to be thread safe.  If capturing on multiple interfaces
or multiple queues, the same pool will be used (consumers).
And if the capture ring gets full, the queues will need
to put back the capture buffer which leads to multiple producers.

Bugzilla ID: 1271
Fixes: cbb4414 ("app/dumpcap: add new packet capture application")

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Reviewed-by: Morten Brørup <mb@smartsharesystems.com>

app/dumpcap/main.c

@@ -576,7 +576,7 @@ static struct rte_mempool *create_mempool(void)
 	mp = rte_pktmbuf_pool_create_by_ops(pool_name, num_mbufs,
 					    MBUF_POOL_CACHE_SIZE, 0,
 					    rte_pcapng_mbuf_size(snaplen),
-					    rte_socket_id(), "ring_mp_sc");
+					    rte_socket_id(), "ring_mp_mc");
 	if (mp == NULL)
 		rte_exit(EXIT_FAILURE,
 			 "Mempool (%s) creation failed: %s\n", pool_name,