[PATCH v6 3/3] app/testpmd: set packet dump based on verbosity level

[Raslan Darawsheh <rasland@mellanox.com>]

when changing verbosity level it will configure rx/tx callbacks to dump
packets based on the verbosity value as following:
    1- dump only received packets:
       testpmd> set verbose 1
    2- dump only sent packets:
       testpmd> set verbose 2
    3- dump sent and received packets:
       testpmd> set verbose (any number > 2)
    4- disable dump
       testpmd> set verbose 0

Signed-off-by: Raslan Darawsheh <rasland@mellanox.com>
Acked-by: Bernard Iremonger <bernard.iremonger@intel.com>

---
changes in v6:
	add documentation for the packet dump
---
---
 app/test-pmd/config.c                       | 25 +++++++++++++++++++++++++
 app/test-pmd/testpmd.c                      |  4 ++--
 app/test-pmd/testpmd.h                      |  1 +
 doc/guides/testpmd_app_ug/testpmd_funcs.rst |  6 +++++-
 4 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 55fec7f..1696623 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -50,6 +50,7 @@
 #endif
 #include <rte_gro.h>
 #include <cmdline_parse_etheraddr.h>
+#include <rte_config.h>
 
 #include "testpmd.h"
 
@@ -2773,11 +2774,35 @@ remove_tx_dump_callbacks(portid_t portid)
 }
 
 void
+configure_rxtx_dump_callbacks(uint16_t verbose)
+{
+	portid_t portid;
+
+#ifndef RTE_ETHDEV_RXTX_CALLBACKS
+		TESTPMD_LOG(ERR, "setting rxtx callbacks is not enabled\n");
+		return;
+#endif
+
+	RTE_ETH_FOREACH_DEV(portid)
+	{
+		if (verbose == 1 || verbose > 2)
+			add_rx_dump_callbacks(portid);
+		else
+			remove_rx_dump_callbacks(portid);
+		if (verbose >= 2)
+			add_tx_dump_callbacks(portid);
+		else
+			remove_tx_dump_callbacks(portid);
+	}
+}
+
+void
 set_verbose_level(uint16_t vb_level)
 {
 	printf("Change verbose level from %u to %u\n",
 	       (unsigned int) verbose_level, (unsigned int) vb_level);
 	verbose_level = vb_level;
+	configure_rxtx_dump_callbacks(verbose_level);
 }
 
 void
diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 5dbbf78..3c42924 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -1988,7 +1988,7 @@ start_port(portid_t pid)
 					return -1;
 				}
 			}
-
+			configure_rxtx_dump_callbacks(0);
 			printf("Configuring Port %d (socket %u)\n", pi,
 					port->socket_id);
 			/* configure port */
@@ -2087,7 +2087,7 @@ start_port(portid_t pid)
 				return -1;
 			}
 		}
-
+		configure_rxtx_dump_callbacks(verbose_level);
 		/* start port */
 		if (rte_eth_dev_start(pi) < 0) {
 			printf("Fail to start port %d\n", pi);
diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
index c07bee8..3da728c 100644
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -777,6 +777,7 @@ void add_rx_dump_callbacks(portid_t portid);
 void remove_rx_dump_callbacks(portid_t portid);
 void add_tx_dump_callbacks(portid_t portid);
 void remove_tx_dump_callbacks(portid_t portid);
+void configure_rxtx_dump_callbacks(uint16_t verbose);
 
 /*
  * Work-around of a compilation error with ICC on invocations of the
diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index ca060e1..60855c6 100644
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -449,7 +449,11 @@ Set the debug verbosity level::
 
    testpmd> set verbose (level)
 
-Currently the only available levels are 0 (silent except for error) and 1 (fully verbose).
+Available levels are as following:
+* ``0`` silent except for error.
+* ``1`` fully verbose except for Tx packets.
+* ``2`` fully verbose except for Rx packets.
+* ``> 2`` fully verbose.
 
 set log
 ~~~~~~~
-- 
2.7.4