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authorStephen Hemminger <shemminger@osdl.org>2006-12-07 18:08:17 -0500
committerDavid S. Miller <davem@sunset.davemloft.net>2006-12-08 20:19:20 -0500
commit3644f0cee77494190452de132e82245107939284 (patch)
tree7aeb1dd32c68e372cc2aaa9d26703dd238b48a53 /include/linux
parenteb991b39385c7b04923d701764a34694ec54b53d (diff)
[NET]: Convert hh_lock to seqlock.
The hard header cache is in the main output path, so using seqlock instead of reader/writer lock should reduce overhead. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/netdevice.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index c57088f575a3..631cec4ff5e1 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -199,7 +199,7 @@ struct hh_cache
199 */ 199 */
200 u16 hh_len; /* length of header */ 200 u16 hh_len; /* length of header */
201 int (*hh_output)(struct sk_buff *skb); 201 int (*hh_output)(struct sk_buff *skb);
202 rwlock_t hh_lock; 202 seqlock_t hh_lock;
203 203
204 /* cached hardware header; allow for machine alignment needs. */ 204 /* cached hardware header; allow for machine alignment needs. */
205#define HH_DATA_MOD 16 205#define HH_DATA_MOD 16