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Improve comments on interpretation of sFlow sampling probabilities.

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Suggested by Justin Pettit.
This commit is contained in:
Ben Pfaff
2010-01-08 16:44:43 -08:00
parent 67a78abeea
commit b4a7a3f3de
3 changed files with 16 additions and 14 deletions
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12
lib/dpif.c
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@@ -845,9 +845,9 @@ dpif_recv_set_mask(struct dpif *dpif, int listen_mask)
return error;
}
/* Retrieve the sFlow sampling probability. A probability of 0 means sample no
* packets, UINT32_MAX means sample every packet, and other values are
* intermediate probabilities.
/* Retrieve the sFlow sampling probability. '*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.
*
* Returns 0 if successful, otherwise a positive errno value. EOPNOTSUPP
* indicates that 'dpif' does not support sFlow sampling. */
@@ -864,9 +864,9 @@ dpif_get_sflow_probability(const struct dpif *dpif, uint32_t *probability)
return error;
}
/* Set the sFlow sampling probability. A probability of 0 means sample no
* packets, UINT32_MAX means sample every packet, and other values are
* intermediate probabilities.
/* Set the sFlow sampling probability. '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.
*
* Returns 0 if successful, otherwise a positive errno value. EOPNOTSUPP
* indicates that 'dpif' does not support sFlow sampling. */