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| author | Allan Stephens <Allan.Stephens@windriver.com> | 2011-01-18 13:24:55 -0500 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2011-02-23 18:05:09 -0500 |
| commit | 5413b4c6c07b659e52c84a4e40d897b32b89834f (patch) | |
| tree | a0f108cc7396f0a715ed36cd1d6b2636c52798b1 /include | |
| parent | 3f8dd9446e66f2a982ddcff38e4705cfe93eeec6 (diff) | |
| download | linux-stable-5413b4c6c07b659e52c84a4e40d897b32b89834f.tar.gz linux-stable-5413b4c6c07b659e52c84a4e40d897b32b89834f.tar.bz2 linux-stable-5413b4c6c07b659e52c84a4e40d897b32b89834f.zip | |
tipc: Improve handling of invalid link tolerance values
Enhances TIPC link code to ignore an invalid link tolerance value
contained in an incoming LINK_PROTOCOL message, rather than
processing the value and potentially causing a divide-by-zero error.
Also add a compile-time check that catches attempts to redefine
TIPC's minimum link tolerance value in a manner that might result
in the same divide-by-zero error at run-time.
Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/tipc_config.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/tipc_config.h b/include/linux/tipc_config.h index 7d42460a5e3c..c14102dee22e 100644 --- a/include/linux/tipc_config.h +++ b/include/linux/tipc_config.h @@ -193,6 +193,10 @@ #define TIPC_DEF_LINK_TOL 1500 #define TIPC_MAX_LINK_TOL 30000 +#if (TIPC_MIN_LINK_TOL < 16) +#error "TIPC_MIN_LINK_TOL is too small (abort limit may be NaN)" +#endif + /* * Link window limits (min, default, max), in packets */ |