Imported Upstream version 17.05

Change-Id: Id1e419c5a214e4a18739663b91f0f9a549f1fdc6
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

1 files changed, 145 insertions, 0 deletions

diff --git a/drivers/net/sfc/sfc_kvargs.c b/drivers/net/sfc/sfc_kvargs.c
new file mode 100644
index 00000000..7bcd5951
--- /dev/null
+++ b/drivers/net/sfc/sfc_kvargs.c
@@ -0,0 +1,145 @@
+/*-
+ *   BSD LICENSE
+ *
+ * Copyright (c) 2016-2017 Solarflare Communications Inc.
+ * All rights reserved.
+ *
+ * This software was jointly developed between OKTET Labs (under contract
+ * for Solarflare) and Solarflare Communications, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdbool.h>
+#include <strings.h>
+
+#include <rte_devargs.h>
+#include <rte_kvargs.h>
+
+#include "sfc.h"
+#include "sfc_kvargs.h"
+
+int
+sfc_kvargs_parse(struct sfc_adapter *sa)
+{
+	struct rte_eth_dev *eth_dev = (sa)->eth_dev;
+	struct rte_devargs *devargs = eth_dev->device->devargs;
+	const char **params = (const char *[]){
+		SFC_KVARG_STATS_UPDATE_PERIOD_MS,
+		SFC_KVARG_DEBUG_INIT,
+		SFC_KVARG_MCDI_LOGGING,
+		SFC_KVARG_PERF_PROFILE,
+		SFC_KVARG_RX_DATAPATH,
+		SFC_KVARG_TX_DATAPATH,
+		NULL,
+	};
+
+	if (devargs == NULL)
+		return 0;
+
+	sa->kvargs = rte_kvargs_parse(devargs->args, params);
+	if (sa->kvargs == NULL)
+		return EINVAL;
+
+	return 0;
+}
+
+void
+sfc_kvargs_cleanup(struct sfc_adapter *sa)
+{
+	rte_kvargs_free(sa->kvargs);
+}
+
+static int
+sfc_kvarg_match_value(const char *value, const char * const *values,
+		      unsigned int n_values)
+{
+	unsigned int i;
+
+	for (i = 0; i < n_values; ++i)
+		if (strcasecmp(value, values[i]) == 0)
+			return 1;
+
+	return 0;
+}
+
+int
+sfc_kvargs_process(struct sfc_adapter *sa, const char *key_match,
+		   arg_handler_t handler, void *opaque_arg)
+{
+	if (sa->kvargs == NULL)
+		return 0;
+
+	return -rte_kvargs_process(sa->kvargs, key_match, handler, opaque_arg);
+}
+
+int
+sfc_kvarg_bool_handler(__rte_unused const char *key,
+		       const char *value_str, void *opaque)
+{
+	const char * const true_strs[] = {
+		"1", "y", "yes", "on", "true"
+	};
+	const char * const false_strs[] = {
+		"0", "n", "no", "off", "false"
+	};
+	bool *value = opaque;
+
+	if (sfc_kvarg_match_value(value_str, true_strs,
+				  RTE_DIM(true_strs)))
+		*value = true;
+	else if (sfc_kvarg_match_value(value_str, false_strs,
+				       RTE_DIM(false_strs)))
+		*value = false;
+	else
+		return -EINVAL;
+
+	return 0;
+}
+
+int
+sfc_kvarg_long_handler(__rte_unused const char *key,
+		       const char *value_str, void *opaque)
+{
+	long value;
+	char *endptr;
+
+	if (!value_str || !opaque)
+		return -EINVAL;
+
+	value = strtol(value_str, &endptr, 0);
+	if (endptr == value_str)
+		return -EINVAL;
+
+	*(long *)opaque = value;
+
+	return 0;
+}
+
+int
+sfc_kvarg_string_handler(__rte_unused const char *key,
+			 const char *value_str, void *opaque)
+{
+	*(const char **)opaque = value_str;
+
+	return 0;
+}