diff options
| author | David S. Miller <davem@davemloft.net> | 2012-02-06 15:14:37 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-02-06 15:14:37 -0500 |
| commit | a0417fa3a18a14be1f4d9cffcf378a7c42d92a91 (patch) | |
| tree | 4606685ea5ab5ebe33ad4335dc004c66ea31bdc2 /include | |
| parent | c056b734e54e12f38f34a2583a4824e6cecc16c1 (diff) | |
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/sch_generic.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index f6bb08b73ca4..55ce96b53b09 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h | |||
| @@ -220,9 +220,16 @@ struct tcf_proto { | |||
| 220 | 220 | ||
| 221 | struct qdisc_skb_cb { | 221 | struct qdisc_skb_cb { |
| 222 | unsigned int pkt_len; | 222 | unsigned int pkt_len; |
| 223 | long data[]; | 223 | unsigned char data[24]; |
| 224 | }; | 224 | }; |
| 225 | 225 | ||
| 226 | static inline void qdisc_cb_private_validate(const struct sk_buff *skb, int sz) | ||
| 227 | { | ||
| 228 | struct qdisc_skb_cb *qcb; | ||
| 229 | BUILD_BUG_ON(sizeof(skb->cb) < sizeof(unsigned int) + sz); | ||
| 230 | BUILD_BUG_ON(sizeof(qcb->data) < sz); | ||
| 231 | } | ||
| 232 | |||
| 226 | static inline int qdisc_qlen(const struct Qdisc *q) | 233 | static inline int qdisc_qlen(const struct Qdisc *q) |
| 227 | { | 234 | { |
| 228 | return q->q.qlen; | 235 | return q->q.qlen; |