forked from Minki/linux
e0f31d8498
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>
33 lines
953 B
C
33 lines
953 B
C
#ifndef _NET_FLOW_KEYS_H
|
|
#define _NET_FLOW_KEYS_H
|
|
|
|
/* struct flow_keys:
|
|
* @src: source ip address in case of IPv4
|
|
* For IPv6 it contains 32bit hash of src address
|
|
* @dst: destination ip address in case of IPv4
|
|
* For IPv6 it contains 32bit hash of dst address
|
|
* @ports: port numbers of Transport header
|
|
* port16[0]: src port number
|
|
* port16[1]: dst port number
|
|
* @thoff: Transport header offset
|
|
* @n_proto: Network header protocol (eg. IPv4/IPv6)
|
|
* @ip_proto: Transport header protocol (eg. TCP/UDP)
|
|
* All the members, except thoff, are in network byte order.
|
|
*/
|
|
struct flow_keys {
|
|
/* (src,dst) must be grouped, in the same way than in IP header */
|
|
__be32 src;
|
|
__be32 dst;
|
|
union {
|
|
__be32 ports;
|
|
__be16 port16[2];
|
|
};
|
|
u16 thoff;
|
|
u16 n_proto;
|
|
u8 ip_proto;
|
|
};
|
|
|
|
bool skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow);
|
|
__be32 skb_flow_get_ports(const struct sk_buff *skb, int thoff, u8 ip_proto);
|
|
#endif
|