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| author | Ben Hutchings <bhutchings@solarflare.com> | 2011-09-06 15:52:47 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-09-17 01:25:10 +0200 |
| commit | 473e64ee4603671efa1e0785418e56e9ffdfc47b (patch) | |
| tree | ff40ee34b7ac14c920993bb655527338419dea63 /include/net/scm.h | |
| parent | ethtool: Clean up definitions of rule location arrays in RX NFC (diff) | |
| download | linux-473e64ee4603671efa1e0785418e56e9ffdfc47b.tar.xz linux-473e64ee4603671efa1e0785418e56e9ffdfc47b.zip | |
ethtool: Update ethtool_rxnfc::rule_cnt on return from ETHTOOL_GRXCLSRLALL
A user-space process must use ETHTOOL_GRXCLSRLCNT to find the number
of classification rules, then allocate a buffer of the right size,
then use ETHTOOL_GRXCLSRLALL to fill the buffer. If some other
process inserts or deletes a rule between those two operations,
the user buffer might turn out to be the wrong size.
If it's too small, the return value will be -EMSGSIZE. But if it's
too large, there is no indication of this. Fix this by updating
the rule_cnt field on return.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/scm.h')
0 files changed, 0 insertions, 0 deletions