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flow_keys: Record IP layer protocol in skb_flow_dissect()

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skb_flow_dissect() dissects only transport header type in ip_proto. It dose not
give any information about IPv4 or IPv6.

This patch adds new member, n_proto, to struct flow_keys. Which records the
IP layer type. i.e IPv4 or IPv6.

This can be used in netdev->ndo_rx_flow_steer driver function to dissect flow.

Adding new member to flow_keys increases the struct size by around 4 bytes.
This causes BUILD_BUG_ON(sizeof(qcb->data) < sz); to fail in
qdisc_cb_private_validate()

So increase data size by 4

Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Govindarajulu Varadarajan
2014-06-23 16:07:58 +05:30
committed by David S. Miller
parent eef929622b
commit e0f31d8498
3 changed files with 16 additions and 1 deletions
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2
include/net/sch_generic.h
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@@ -231,7 +231,7 @@ struct qdisc_skb_cb {
unsigned int pkt_len;
u16 slave_dev_queue_mapping;
u16 _pad;
unsigned char data[20];
unsigned char data[24];
};
static inline void qdisc_cb_private_validate(const struct sk_buff *skb, int sz)