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| author | Jiri Benc <jbenc@suse.cz> | 2005-06-02 16:48:05 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-06-02 16:48:05 -0700 |
| commit | 5ba0eac6e0b7e2889649a1105d97c600595e2bb1 (patch) | |
| tree | e7bc652889162d1b7997e779ce5a5fef4355838f /include/linux/netdevice.h | |
| parent | b597ef4712c05c962640a655386a7f06cc1a1fbc (diff) | |
| download | lwn-5ba0eac6e0b7e2889649a1105d97c600595e2bb1.tar.gz lwn-5ba0eac6e0b7e2889649a1105d97c600595e2bb1.zip | |
[NET]: Fix HH_DATA_OFF.
When the hardware header size is a multiple of HH_DATA_MOD, HH_DATA_OFF()
incorrectly returns HH_DATA_MOD (instead of 0). This affects ieee80211 layer
as 802.11 header is 32 bytes long.
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/netdevice.h')
| -rw-r--r-- | include/linux/netdevice.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 470af8c1a4a0..ba5d1236aa17 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -204,7 +204,7 @@ struct hh_cache /* cached hardware header; allow for machine alignment needs. */ #define HH_DATA_MOD 16 #define HH_DATA_OFF(__len) \ - (HH_DATA_MOD - ((__len) & (HH_DATA_MOD - 1))) + (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) #define HH_DATA_ALIGN(__len) \ (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; |