crypto: CLI to change dispatch mode
This change aims to affect crypto_sw_scheduler behavior,
but all the edits end up in vnet/crypto.
After 9a9604b introduced adaptive mode for crypto dispatch,
the performance of async mode at lower rate got worse.
A work around for CSIT test is done by changing dispatch mode via explicit API call
in https://github.com/FDio/vpp/commit/139aba204780f6cc2845b311820a0b4c47517d02
In this change, the CLI is brought back to allow user to fix the
dispatch mode.
set crypto async dispatch mode <polling|interrupt|adaptive>
Type: improvement
Change-Id: I029e98aa25889eddcf62e75a6c78926cdee862ef
Signed-off-by: Niyaz Murshed <niyaz.murshed@arm.com>
diff --git a/src/vnet/crypto/cli.c b/src/vnet/crypto/cli.c
index 7c2efa2..5bc070c 100644
--- a/src/vnet/crypto/cli.c
+++ b/src/vnet/crypto/cli.c
@@ -429,6 +429,45 @@
};
/* *INDENT-ON* */
+static clib_error_t *
+set_crypto_async_dispatch_command_fn (vlib_main_t *vm, unformat_input_t *input,
+ vlib_cli_command_t *cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ clib_error_t *error = 0;
+ u8 adaptive = 0;
+ u8 mode = VLIB_NODE_STATE_INTERRUPT;
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "polling"))
+ mode = VLIB_NODE_STATE_POLLING;
+ else if (unformat (line_input, "interrupt"))
+ mode = VLIB_NODE_STATE_INTERRUPT;
+ else if (unformat (line_input, "adaptive"))
+ adaptive = 1;
+ else
+ {
+ error = clib_error_return (0, "invalid params");
+ goto done;
+ }
+ }
+
+ vnet_crypto_set_async_dispatch (mode, adaptive);
+done:
+ unformat_free (line_input);
+ return error;
+}
+
+VLIB_CLI_COMMAND (set_crypto_async_dispatch_mode_command, static) = {
+ .path = "set crypto async dispatch mode",
+ .short_help = "set crypto async dispatch mode <polling|interrupt|adaptive>",
+ .function = set_crypto_async_dispatch_command_fn,
+};
+
/*
* fd.io coding-style-patch-verification: ON
*