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authorDavid S. Miller <davem@davemloft.net>2008-05-12 20:17:33 -0700
committerDavid S. Miller <davem@davemloft.net>2008-05-12 20:17:33 -0700
commit8388e3da34edb141362bb42811ee487dfec15525 (patch)
tree0d2eaece7f0eb72151d31276af0644bc913b5246 /include
parentf403ede70518c131ba8bebbacaf182927a58a315 (diff)
net: Set LL_MAX_HEADER properly for wireless.
Wireless networking, particularly with MESH enabled, has quite strong requirements for link-layer header space. Based upon some numbers and descriptions from Johannes Berg we use 96 (same as AX25) for plain wireless, and with mesh enabled we use 128. In the process, simplify the cpp conditional logic here by ordering the cases by those needing the most space down to those needing the least case. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/netdevice.h16
1 files changed, 9 insertions, 7 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 746901774d49..a3fb57fde623 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -93,14 +93,16 @@ struct wireless_dev;
* used.
*/
-#if !defined(CONFIG_AX25) && !defined(CONFIG_AX25_MODULE) && !defined(CONFIG_TR)
-#define LL_MAX_HEADER 32
+#if defined(CONFIG_WLAN_80211) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
+# if defined(CONFIG_MAC80211_MESH)
+# define LL_MAX_HEADER 128
+# else
+# define LL_MAX_HEADER 96
+# endif
+#elif defined(CONFIG_TR)
+# define LL_MAX_HEADER 48
#else
-#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
-#define LL_MAX_HEADER 96
-#else
-#define LL_MAX_HEADER 48
-#endif
+# define LL_MAX_HEADER 32
#endif
#if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \

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