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authorFlorin Coras <fcoras@cisco.com>2017-09-11 20:54:15 -0400
committerDave Barach <openvpp@barachs.net>2017-09-15 20:56:49 +0000
commit2f9b0c05fca7ca829ea438da1d87e2bf93969500 (patch)
treee426f427c1f5da45b3815cae4f1b0400897bd6de /src/plugins/dpdk/device
parent3e233678f13bc175e652ac0ea4a038054771ee97 (diff)
dpdk: cli to check for buffer leakage
Use buffer pre_data and existing buffer trace trajectory code to find out dpdk buffer leakages. Change-Id: I26a5d8bd2f23d01cb6070ffc3ddcc6d3d863b575 Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/plugins/dpdk/device')
-rw-r--r--src/plugins/dpdk/device/cli.c53
-rw-r--r--src/plugins/dpdk/device/device.c6
-rw-r--r--src/plugins/dpdk/device/dpdk.h5
3 files changed, 64 insertions, 0 deletions
diff --git a/src/plugins/dpdk/device/cli.c b/src/plugins/dpdk/device/cli.c
index aeeb772d4fb..c9fcea5c8d5 100644
--- a/src/plugins/dpdk/device/cli.c
+++ b/src/plugins/dpdk/device/cli.c
@@ -1885,6 +1885,59 @@ VLIB_CLI_COMMAND (show_vpe_version_command, static) = {
};
/* *INDENT-ON* */
+#if CLI_DEBUG
+
+static clib_error_t *
+dpdk_validate_buffers_fn (vlib_main_t * vm, unformat_input_t * input,
+ vlib_cli_command_t * cmd_arg)
+{
+ u32 n_invalid_bufs = 0, uninitialized = 0;
+ u32 is_poison = 0, is_test = 0;
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "poison"))
+ is_poison = 1;
+ else if (unformat (input, "trajectory"))
+ is_test = 1;
+ else
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, input);
+ }
+
+ if (VLIB_BUFFER_TRACE_TRAJECTORY == 0)
+ {
+ vlib_cli_output (vm, "Trajectory not enabled. Recompile with "
+ "VLIB_BUFFER_TRACE_TRAJECTORY 1");
+ return 0;
+ }
+ if (is_poison)
+ {
+ dpdk_buffer_poison_trajectory_all ();
+ }
+ if (is_test)
+ {
+ n_invalid_bufs = dpdk_buffer_validate_trajectory_all (&uninitialized);
+ if (!n_invalid_bufs)
+ vlib_cli_output (vm, "All buffers are valid %d uninitialized",
+ uninitialized);
+ else
+ vlib_cli_output (vm, "Found %d invalid buffers and %d uninitialized",
+ n_invalid_bufs, uninitialized);
+ }
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (test_dpdk_buffers_command, static) =
+{
+ .path = "test dpdk buffers",
+ .short_help = "test dpdk buffers [poison] [trajectory]",
+ .function = dpdk_validate_buffers_fn,
+};
+/* *INDENT-ON* */
+
+#endif
+
clib_error_t *
dpdk_cli_init (vlib_main_t * vm)
{
diff --git a/src/plugins/dpdk/device/device.c b/src/plugins/dpdk/device/device.c
index 97c136301df..aa134327373 100644
--- a/src/plugins/dpdk/device/device.c
+++ b/src/plugins/dpdk/device/device.c
@@ -462,6 +462,11 @@ dpdk_interface_tx (vlib_main_t * vm,
or_flags = b0->flags | b1->flags | b2->flags | b3->flags;
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b1);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b2);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b3);
+
if (or_flags & VLIB_BUFFER_NEXT_PRESENT)
{
dpdk_validate_rte_mbuf (vm, b0, 1);
@@ -556,6 +561,7 @@ dpdk_interface_tx (vlib_main_t * vm,
from++;
b0 = vlib_get_buffer (vm, bi0);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
dpdk_validate_rte_mbuf (vm, b0, 1);
diff --git a/src/plugins/dpdk/device/dpdk.h b/src/plugins/dpdk/device/dpdk.h
index 849e687ba44..9762c7137f5 100644
--- a/src/plugins/dpdk/device/dpdk.h
+++ b/src/plugins/dpdk/device/dpdk.h
@@ -467,6 +467,11 @@ admin_up_down_process (vlib_main_t * vm,
clib_error_t *dpdk_buffer_pool_create (vlib_main_t * vm, unsigned num_mbufs,
unsigned socket_id);
+#if CLI_DEBUG
+int dpdk_buffer_validate_trajectory_all (u32 * uninitialized);
+void dpdk_buffer_poison_trajectory_all (void);
+#endif
+
#endif /* __included_dpdk_h__ */
/*