/*
- * Copyright (c) 2009 Nicira Networks.
+ * Copyright (c) 2009, 2010 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* Return value is 0 or a positive errno value. EOPNOTSUPP indicates that
* the datapath does not support sFlow, as does a null pointer.
*
- * A probability of 0 means sample no packets, UINT32_MAX means sample
- * every packet, and other values are intermediate probabilities. */
+ * '*probability' is expressed as the number of packets out of UINT_MAX to
+ * sample, e.g. probability/UINT_MAX is the probability of sampling a given
+ * packet. */
int (*get_sflow_probability)(const struct dpif *dpif,
uint32_t *probability);
* is 0 or a positive errno value. EOPNOTSUPP indicates that the datapath
* does not support sFlow, as does a null pointer.
*
- * A probability of 0 means sample no packets, UINT32_MAX means sample
- * every packet, and other values are intermediate probabilities. */
+ * 'probability' is expressed as the number of packets out of UINT_MAX to
+ * sample, e.g. probability/UINT_MAX is the probability of sampling a given
+ * packet. */
int (*set_sflow_probability)(struct dpif *dpif, uint32_t probability);
/* Attempts to receive a message from 'dpif'. If successful, stores the