dpdk: Add ovs-appctl dpdk/get-memzone-stats command.

New appctl 'dpdk/get-memzone-stats' implemented to get result of
'rte_memzone_dump()' function.

Could be used for debugging.

Acked-by: Roi Dayan <roid@nvidia.com>
Acked-by: Simon Horman <horms@ovn.org>
Signed-off-by: Eli Britstein <elibr@nvidia.com>
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>

NEWS

@@ -1,5 +1,7 @@
 Post-v3.5.0
 --------------------
+   - DPDK:
+     * New debug appctl command 'dpdk/get-memzone-stats'.
 
 
 v3.5.0 - xx xxx xxxx

lib/dpdk-unixctl.man

@@ -15,5 +15,7 @@ components (see \fBdpdk/log-list\fR command on \fBovs\-appctl\fR(8)) separated
 by a colon from the logging \fBlevel\fR to apply.
 .IP "\fBdpdk/get-malloc-stats\fR"
 Prints the heap information statistics about DPDK malloc.
+.IP "\fBdpdk/get-memzone-stats\fR"
+Prints the reserved memory zones from DPDK.
 .RE
 .

lib/dpdk.c

@@ -437,6 +437,8 @@ dpdk_init__(const struct smap *ovs_other_config)
     unixctl_command_register("dpdk/get-malloc-stats", "", 0, 0,
                              dpdk_unixctl_mem_stream,
                              malloc_dump_stats_wrapper);
+    unixctl_command_register("dpdk/get-memzone-stats", "", 0, 0,
+                             dpdk_unixctl_mem_stream, rte_memzone_dump);
 
     /* We are called from the main thread here */
     RTE_PER_LCORE(_lcore_id) = NON_PMD_CORE_ID;