1 #ifndef _TCP_DCTCP_H 1
2 #define _TCP_DCTCP_H
3
4 static inline void dctcp_ece_ack_cwr(struct so
5 {
6 struct tcp_sock *tp = tcp_sk(sk);
7
8 if (ce_state == 1)
9 tp->ecn_flags |= TCP_ECN_DEMAN
10 else
11 tp->ecn_flags &= ~TCP_ECN_DEMA
12 }
13
14 /* Minimal DCTP CE state machine:
15 *
16 * S: 0 <- last pkt was non-CE
17 * 1 <- last pkt was CE
18 */
19 static inline void dctcp_ece_ack_update(struct
20 u32 *p
21 {
22 u32 new_ce_state = (evt == CA_EVENT_EC
23
24 if (*ce_state != new_ce_state) {
25 /* CE state has changed, force
26 * reflect the new CE state. I
27 * send that first to reflect
28 */
29 if (inet_csk(sk)->icsk_ack.pen
30 dctcp_ece_ack_cwr(sk,
31 __tcp_send_ack(sk, *pr
32 }
33 inet_csk(sk)->icsk_ack.pending
34 }
35 *prior_rcv_nxt = tcp_sk(sk)->rcv_nxt;
36 *ce_state = new_ce_state;
37 dctcp_ece_ack_cwr(sk, new_ce_state);
38 }
39
40 #endif
41
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