[v3,2/3] app/testpmd: support creation of no IOVA contig mempools

diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c
index 7b6b60905d..7f18b3e748 100644
--- a/app/test-pmd/parameters.c
+++ b/app/test-pmd/parameters.c
@@ -202,6 +202,8 @@  usage(char* progname)
 	printf("  --noisy-lkup-num-writes=N: do N random writes per packet\n");
 	printf("  --noisy-lkup-num-reads=N: do N random reads per packet\n");
 	printf("  --noisy-lkup-num-writes=N: do N random reads and writes per packet\n");
+	printf("  --no-iova-contig: mempool memory can be IOVA non contiguous. "
+	       "valid only with --mp-alloc=anon\n");
 }
 
 #ifdef RTE_LIBRTE_CMDLINE
@@ -651,6 +653,7 @@  launch_args_parse(int argc, char** argv)
 		{ "noisy-lkup-num-writes",	1, 0, 0 },
 		{ "noisy-lkup-num-reads",	1, 0, 0 },
 		{ "noisy-lkup-num-reads-writes", 1, 0, 0 },
+		{ "no-iova-contig",             0, 0, 0 },
 		{ 0, 0, 0, 0 },
 	};
 
@@ -1242,6 +1245,8 @@  launch_args_parse(int argc, char** argv)
 					rte_exit(EXIT_FAILURE,
 						 "noisy-lkup-num-reads-writes must be >= 0\n");
 			}
+			if (!strcmp(lgopts[opt_idx].name, "no-iova-contig"))
+				mempool_flags = MEMPOOL_F_NO_IOVA_CONTIG;
 			break;
 		case 'h':
 			usage(argv[0]);
@@ -1258,4 +1263,12 @@  launch_args_parse(int argc, char** argv)
 	/* Set offload configuration from command line parameters. */
 	rx_mode.offloads = rx_offloads;
 	tx_mode.offloads = tx_offloads;
+
+	if (mempool_flags & MEMPOOL_F_NO_IOVA_CONTIG &&
+	    mp_alloc_type != MP_ALLOC_ANON) {
+		TESTPMD_LOG(WARNING, "cannot use no-iova-contig without "
+				  "mp-alloc=anon. mempool no-iova-contig is "
+				  "ignored\n");
+		mempool_flags = 0;
+	}
 }
diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 5c68eb9ec6..dd449a9859 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -189,6 +189,7 @@  struct fwd_engine * fwd_engines[] = {
 };
 
 struct rte_mempool *mempools[RTE_MAX_NUMA_NODES];
+uint16_t mempool_flags;
 
 struct fwd_config cur_fwd_config;
 struct fwd_engine *cur_fwd_eng = &io_fwd_engine; /**< IO mode by default. */
@@ -867,7 +868,7 @@  mbuf_pool_create(uint16_t mbuf_seg_size, unsigned nb_mbuf,
 			rte_mp = rte_mempool_create_empty(pool_name, nb_mbuf,
 				mb_size, (unsigned int) mb_mempool_cache,
 				sizeof(struct rte_pktmbuf_pool_private),
-				socket_id, 0);
+				socket_id, mempool_flags);
 			if (rte_mp == NULL)
 				goto err;
 
diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
index 84ce8ffa2f..46d26181dd 100644
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -266,6 +266,8 @@  extern struct fwd_engine * fwd_engines[]; /**< NULL terminated array. */
 
 extern struct rte_mempool *mempools[RTE_MAX_NUMA_NODES];
 
+extern uint16_t mempool_flags;
+
 /**
  * Forwarding Configuration
  *
diff --git a/doc/guides/testpmd_app_ug/run_app.rst b/doc/guides/testpmd_app_ug/run_app.rst
index b717b8c7b7..7b4341647f 100644
--- a/doc/guides/testpmd_app_ug/run_app.rst
+++ b/doc/guides/testpmd_app_ug/run_app.rst
@@ -427,3 +427,8 @@  The commandline options are:
 
     Set the number of r/w accesses to be done in noisy neighbour simulation memory buffer to N.
     Only available with the noisy forwarding mode. The default value is 0.
+
+*   ``--no-iova-contig``
+
+    Enable to create mempool which is not IOVA contiguous. Valid only with --mp-alloc=anon.
+    The default value is 0.