A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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net: Make qdisc_skb_cb upper size bound explicit.

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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>
This commit is contained in:
David S. Miller 2012-02-06 15:14:37 -05:00
commit 16bda13d90
5 changed files with 13 additions and 10 deletions
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9
include/net/sch_generic.h
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@ -220,9 +220,16 @@ struct tcf_proto {
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;