commit 59d74026fa4b5df72a268f1e9578af500154ad07
author David S. Miller <davem@davemloft.net> Mon Feb 06 15:35:14 2012 -0500
committer David S. Miller <davem@davemloft.net> Mon Feb 06 15:35:14 2012 -0500
tree 4b6058de06d70c5080a63178475708a686954c84
parent a0417fa3a18a14be1f4d9cffcf378a7c42d92a91
parent 8926574c4d0055ca4c4a02d1f6b2c249d01a0621

Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next

include/net/sch_generic.h

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index f6bb08b..55ce96b 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -220,9 +220,16 @@
 
 struct qdisc_skb_cb {
 	unsigned int		pkt_len;
-	long			data[];
+	unsigned char		data[24];
 };
 
+static inline void qdisc_cb_private_validate(const struct sk_buff *skb, int sz)
+{
+	struct qdisc_skb_cb *qcb;
+	BUILD_BUG_ON(sizeof(skb->cb) < sizeof(unsigned int) + sz);
+	BUILD_BUG_ON(sizeof(qcb->data) < sz);
+}
+
 static inline int qdisc_qlen(const struct Qdisc *q)
 {
 	return q->q.qlen;

net/sched/sch_choke.c

diff --git a/net/sched/sch_choke.c b/net/sched/sch_choke.c
index e465064..7e267d7 100644
--- a/net/sched/sch_choke.c
+++ b/net/sched/sch_choke.c
@@ -148,8 +148,7 @@
 
 static inline struct choke_skb_cb *choke_skb_cb(const struct sk_buff *skb)
 {
-	BUILD_BUG_ON(sizeof(skb->cb) <
-		sizeof(struct qdisc_skb_cb) + sizeof(struct choke_skb_cb));
+	qdisc_cb_private_validate(skb, sizeof(struct choke_skb_cb));
 	return (struct choke_skb_cb *)qdisc_skb_cb(skb)->data;
 }
 

net/sched/sch_netem.c

diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 2776012..e83d61c 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -130,8 +130,7 @@
 
 static inline struct netem_skb_cb *netem_skb_cb(struct sk_buff *skb)
 {
-	BUILD_BUG_ON(sizeof(skb->cb) <
-		sizeof(struct qdisc_skb_cb) + sizeof(struct netem_skb_cb));
+	qdisc_cb_private_validate(skb, sizeof(struct netem_skb_cb));
 	return (struct netem_skb_cb *)qdisc_skb_cb(skb)->data;
 }
 

net/sched/sch_sfb.c

diff --git a/net/sched/sch_sfb.c b/net/sched/sch_sfb.c
index 96e42ca..d7eea99 100644
--- a/net/sched/sch_sfb.c
+++ b/net/sched/sch_sfb.c
@@ -94,8 +94,7 @@
 
 static inline struct sfb_skb_cb *sfb_skb_cb(const struct sk_buff *skb)
 {
-	BUILD_BUG_ON(sizeof(skb->cb) <
-		sizeof(struct qdisc_skb_cb) + sizeof(struct sfb_skb_cb));
+	qdisc_cb_private_validate(skb, sizeof(struct sfb_skb_cb));
 	return (struct sfb_skb_cb *)qdisc_skb_cb(skb)->data;
 }
 

net/sched/sch_sfq.c

diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index 67494ae..60d4718 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -166,9 +166,8 @@
 
 static inline struct sfq_skb_cb *sfq_skb_cb(const struct sk_buff *skb)
 {
-       BUILD_BUG_ON(sizeof(skb->cb) <
-               sizeof(struct qdisc_skb_cb) + sizeof(struct sfq_skb_cb));
-       return (struct sfq_skb_cb *)qdisc_skb_cb(skb)->data;
+	qdisc_cb_private_validate(skb, sizeof(struct sfq_skb_cb));
+	return (struct sfq_skb_cb *)qdisc_skb_cb(skb)->data;
 }
 
 static unsigned int sfq_hash(const struct sfq_sched_data *q,