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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5ed20a68cd
Move the hash computation located in __skb_get_hash to be a separate function which takes flow_keys as input. This will allow flow hash computation in other contexts where we only have addresses and ports. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
34 lines
1002 B
C
34 lines
1002 B
C
#ifndef _NET_FLOW_KEYS_H
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#define _NET_FLOW_KEYS_H
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/* struct flow_keys:
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* @src: source ip address in case of IPv4
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* For IPv6 it contains 32bit hash of src address
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* @dst: destination ip address in case of IPv4
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* For IPv6 it contains 32bit hash of dst address
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* @ports: port numbers of Transport header
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* port16[0]: src port number
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* port16[1]: dst port number
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* @thoff: Transport header offset
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* @n_proto: Network header protocol (eg. IPv4/IPv6)
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* @ip_proto: Transport header protocol (eg. TCP/UDP)
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* All the members, except thoff, are in network byte order.
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*/
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struct flow_keys {
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/* (src,dst) must be grouped, in the same way than in IP header */
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__be32 src;
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__be32 dst;
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union {
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__be32 ports;
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__be16 port16[2];
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};
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u16 thoff;
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u16 n_proto;
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u8 ip_proto;
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};
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bool skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow);
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__be32 skb_flow_get_ports(const struct sk_buff *skb, int thoff, u8 ip_proto);
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u32 flow_hash_from_keys(struct flow_keys *keys);
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#endif
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