[dpdk-stable] [PATCH v2] app/testpmd: fix Segment fault when start fwd

[Wang ShougangX]

This patch fixed the reset function to avoid crash when user don't
call port stop, port reset and port start functions as sequence.

Fixes: 97f1e19679 ("app/testpmd: add port reset command")
Cc: stable at dpdk.org

Signed-off-by: Wang ShougangX <shougangx.wang at intel.com>
---
 app/test-pmd/testpmd.c                      | 2 ++
 doc/guides/testpmd_app_ug/testpmd_funcs.rst | 9 +++++++++
 2 files changed, 11 insertions(+)

diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index e8e2a39b6..9224aa1f7 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -2344,6 +2344,8 @@ reset_port(portid_t pid)
 	if (port_id_is_invalid(pid, ENABLED_WARN))
 		return;
 
+	stop_port(pid);
+
 	printf("Resetting ports...\n");
 
 	RTE_ETH_FOREACH_DEV(pi) {
diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index 313e0707e..2c459810c 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -2041,6 +2041,15 @@ Close all ports or a specific port::
 
    testpmd> port close (port_id|all)
 
+port reset
+~~~~~~~~~~
+
+Reset all ports or a specific port::
+
+   testpmd> port reset (port_id|all)
+
+User should (re-)start the port after reset.
+
 port config - queue ring size
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-- 
2.17.1