commit 16bda13d90c8d5da243e2cfa1677e62ecce26860
author David S. Miller <davem@davemloft.net> Mon Feb 06 15:14:37 2012 -0500
committer David S. Miller <davem@davemloft.net> Thu Feb 09 13:50:34 2012 -0500
tree d10c9e0f9b043170c5bba4599ab1dc006d2a76eb
parent 9cc00b51a3cbb3b933065a55eaa9bfc306411b7a

net: Make qdisc_skb_cb upper size bound explicit.

Just like skb->cb[], so that qdisc_skb_cb can be encapsulated inside
of other data structures.

This is intended to be used by IPoIB so that it can remember
addressing information stored at hard_header_ops->create() time that
it can fetch when the packet gets to the transmit routine.

Signed-off-by: David S. Miller <davem@davemloft.net>

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,