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authorChristian Ehrhardt <christian.ehrhardt@canonical.com>2017-05-16 14:51:32 +0200
committerChristian Ehrhardt <christian.ehrhardt@canonical.com>2017-05-16 16:20:45 +0200
commit7595afa4d30097c1177b69257118d8ad89a539be (patch)
tree4bfeadc905c977e45e54a90c42330553b8942e4e /drivers/net/sfc/sfc_kvargs.c
parentce3d555e43e3795b5d9507fcfc76b7a0a92fd0d6 (diff)
Imported Upstream version 17.05
Change-Id: Id1e419c5a214e4a18739663b91f0f9a549f1fdc6 Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Diffstat (limited to 'drivers/net/sfc/sfc_kvargs.c')
-rw-r--r--drivers/net/sfc/sfc_kvargs.c145
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;
+}