| 1 |
|
| 2 | #ifndef _NET_SECURE_SEQ
|
| 3 | #define _NET_SECURE_SEQ
|
| 4 |
|
| 5 | #include <linux/types.h>
|
| 6 |
|
| 7 | struct net;
|
| 8 | extern struct net init_net;
|
| 9 |
|
| 10 | union tcp_seq_and_ts_off {
|
| 11 | struct {
|
| 12 | u32 seq;
|
| 13 | u32 ts_off;
|
| 14 | };
|
| 15 | u64 hash64;
|
| 16 | };
|
| 17 |
|
| 18 | u64 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport);
|
| 19 | u64 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr,
|
| 20 | __be16 dport);
|
| 21 | union tcp_seq_and_ts_off
|
| 22 | secure_tcp_seq_and_ts_off(const struct net *net, __be32 saddr, __be32 daddr,
|
| 23 | __be16 sport, __be16 dport);
|
| 24 |
|
| 25 | static inline u32 secure_tcp_seq(__be32 saddr, __be32 daddr,
|
| 26 | __be16 sport, __be16 dport)
|
| 27 | {
|
| 28 | union tcp_seq_and_ts_off ts;
|
| 29 |
|
| 30 | ts = secure_tcp_seq_and_ts_off(&init_net, saddr, daddr,
|
| 31 | sport, dport);
|
| 32 |
|
| 33 | return ts.seq;
|
| 34 | }
|
| 35 |
|
| 36 | union tcp_seq_and_ts_off
|
| 37 | secure_tcpv6_seq_and_ts_off(const struct net *net, const __be32 *saddr,
|
| 38 | const __be32 *daddr,
|
| 39 | __be16 sport, __be16 dport);
|
| 40 |
|
| 41 | static inline u32 secure_tcpv6_seq(const __be32 *saddr, const __be32 *daddr,
|
| 42 | __be16 sport, __be16 dport)
|
| 43 | {
|
| 44 | union tcp_seq_and_ts_off ts;
|
| 45 |
|
| 46 | ts = secure_tcpv6_seq_and_ts_off(&init_net, saddr, daddr,
|
| 47 | sport, dport);
|
| 48 |
|
| 49 | return ts.seq;
|
| 50 | }
|
| 51 | #endif
|