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tipc: Increase buffer header to support worst-case device 

This patch increases the headroom TIPC reserves in each sk_buff
to accommodate the largest possible link level device header.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Allan Stephens 2008-05-08 21:38:24 -07:00 committed by David S. Miller
parent e46b66bc42
commit f08269d3ec
1 changed files with 5 additions and 6 deletions
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11
net/tipc/core.h
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@ -279,15 +279,14 @@ static inline void k_term_timer(struct timer_list *timer)
/*
* TIPC message buffer code
*
* TIPC message buffer headroom reserves space for a link-level header
* (in case the message is sent off-node),
* while ensuring TIPC header is word aligned for quicker access
* TIPC message buffer headroom reserves space for the worst-case
* link-level device header (in case the message is sent off-node).
*
* The largest header currently supported is 18 bytes, which is used when
* the standard 14 byte Ethernet header has 4 added bytes for VLAN info
* Note: Headroom should be a multiple of 4 to ensure the TIPC header fields
* are word aligned for quicker access
*/
#define BUF_HEADROOM 20u
#define BUF_HEADROOM LL_MAX_HEADER
struct tipc_skb_cb {
void *handle;