diff options
Diffstat (limited to 'net/dccp')
| -rw-r--r-- | net/dccp/dccp.h | 12 | ||||
| -rw-r--r-- | net/dccp/input.c | 14 | ||||
| -rw-r--r-- | net/dccp/ipv4.c | 10 | ||||
| -rw-r--r-- | net/dccp/minisocks.c | 13 | ||||
| -rw-r--r-- | net/dccp/timer.c | 2 |
5 files changed, 41 insertions, 10 deletions
diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h index aab72b8d0703..33968a9422f2 100644 --- a/net/dccp/dccp.h +++ b/net/dccp/dccp.h @@ -340,13 +340,11 @@ static inline void dccp_hdr_set_ack(struct dccp_hdr_ack_bits *dhack, static inline void dccp_update_gsr(struct sock *sk, u64 seq) { struct dccp_sock *dp = dccp_sk(sk); - u64 tmp_gsr; - dccp_set_seqno(&tmp_gsr, + dp->dccps_gsr = seq; + dccp_set_seqno(&dp->dccps_swl, (dp->dccps_gsr + 1 - (dp->dccps_options.dccpo_sequence_window / 4))); - dp->dccps_gsr = seq; - dccp_set_seqno(&dp->dccps_swl, max48(tmp_gsr, dp->dccps_isr)); dccp_set_seqno(&dp->dccps_swh, (dp->dccps_gsr + (3 * dp->dccps_options.dccpo_sequence_window) / 4)); @@ -355,13 +353,11 @@ static inline void dccp_update_gsr(struct sock *sk, u64 seq) static inline void dccp_update_gss(struct sock *sk, u64 seq) { struct dccp_sock *dp = dccp_sk(sk); - u64 tmp_gss; - dccp_set_seqno(&tmp_gss, + dp->dccps_awh = dp->dccps_gss = seq; + dccp_set_seqno(&dp->dccps_awl, (dp->dccps_gss - dp->dccps_options.dccpo_sequence_window + 1)); - dp->dccps_awl = max48(tmp_gss, dp->dccps_iss); - dp->dccps_awh = dp->dccps_gss = seq; } extern void dccp_insert_options(struct sock *sk, struct sk_buff *skb); diff --git a/net/dccp/input.c b/net/dccp/input.c index ce8396b126d2..5847cf454e26 100644 --- a/net/dccp/input.c +++ b/net/dccp/input.c @@ -314,7 +314,19 @@ static int dccp_rcv_request_sent_state_process(struct sock *sk, } dp->dccps_isr = DCCP_SKB_CB(skb)->dccpd_seq; - dccp_update_gsr(sk, DCCP_SKB_CB(skb)->dccpd_seq); + dccp_update_gsr(sk, dp->dccps_isr); + /* + * SWL and AWL are initially adjusted so that they are not less than + * the initial Sequence Numbers received and sent, respectively: + * SWL := max(GSR + 1 - floor(W/4), ISR), + * AWL := max(GSS - W' + 1, ISS). + * These adjustments MUST be applied only at the beginning of the + * connection. + * + * AWL was adjusted in dccp_v4_connect -acme + */ + dccp_set_seqno(&dp->dccps_swl, + max48(dp->dccps_swl, dp->dccps_isr)); if (ccid_hc_rx_init(dp->dccps_hc_rx_ccid, sk) != 0 || ccid_hc_tx_init(dp->dccps_hc_tx_ccid, sk) != 0) { diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index 02ebf1f39f38..647e669a1266 100644 --- a/net/dccp/ipv4.c +++ b/net/dccp/ipv4.c @@ -309,6 +309,16 @@ static int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, usin->sin_port); dccp_update_gss(sk, dp->dccps_iss); + /* + * SWL and AWL are initially adjusted so that they are not less than + * the initial Sequence Numbers received and sent, respectively: + * SWL := max(GSR + 1 - floor(W/4), ISR), + * AWL := max(GSS - W' + 1, ISS). + * These adjustments MUST be applied only at the beginning of the + * connection. + */ + dccp_set_seqno(&dp->dccps_awl, max48(dp->dccps_awl, dp->dccps_iss)); + inet->id = dp->dccps_iss ^ jiffies; err = dccp_connect(sk); diff --git a/net/dccp/minisocks.c b/net/dccp/minisocks.c index b8e67207e97e..ce5dff4ac22e 100644 --- a/net/dccp/minisocks.c +++ b/net/dccp/minisocks.c @@ -146,6 +146,19 @@ out_free: newdp->dccps_iss = dreq->dreq_iss; dccp_update_gss(newsk, dreq->dreq_iss); + /* + * SWL and AWL are initially adjusted so that they are not less than + * the initial Sequence Numbers received and sent, respectively: + * SWL := max(GSR + 1 - floor(W/4), ISR), + * AWL := max(GSS - W' + 1, ISS). + * These adjustments MUST be applied only at the beginning of the + * connection. + */ + dccp_set_seqno(&newdp->dccps_swl, + max48(newdp->dccps_swl, newdp->dccps_isr)); + dccp_set_seqno(&newdp->dccps_awl, + max48(newdp->dccps_awl, newdp->dccps_iss)); + dccp_init_xmit_timers(newsk); DCCP_INC_STATS_BH(DCCP_MIB_PASSIVEOPENS); diff --git a/net/dccp/timer.c b/net/dccp/timer.c index 47b1616e6189..aa34b576e228 100644 --- a/net/dccp/timer.c +++ b/net/dccp/timer.c @@ -144,7 +144,7 @@ static void dccp_retransmit_timer(struct sock *sk) /* * sk->sk_send_head has to have one skb with * DCCP_SKB_CB(skb)->dccpd_type set to one of the retransmittable DCCP - * packet types (REQUEST, RESPONSE, the ACK in the 3way hanshake + * packet types (REQUEST, RESPONSE, the ACK in the 3way handshake * (PARTOPEN timer), etc). */ BUG_TRAP(sk->sk_send_head != NULL); |