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-rw-r--r--net/tipc/core.h11
1 files changed, 5 insertions, 6 deletions
diff --git a/net/tipc/core.h b/net/tipc/core.h
index 0d783bcc6f9a..bd78d1705c0f 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -303,15 +303,14 @@ 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;