Imported Upstream version 17.05

[deb_dpdk.git] / drivers / net / sfc / sfc_kvargs.c

diff --git a/drivers/net/sfc/sfc_kvargs.c b/drivers/net/sfc/sfc_kvargs.c
new file mode 100644 (file)
index 0000000..7bcd595
--- /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;
+}