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Diffstat (limited to 'net/dccp/input.c')
-rw-r--r--net/dccp/input.c100
1 files changed, 62 insertions, 38 deletions
diff --git a/net/dccp/input.c b/net/dccp/input.c
index bdaecde0bde..4b8638f153a 100644
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -93,7 +93,8 @@ static int dccp_check_seqno(struct sock *sk, struct sk_buff *skb)
*/
if (dh->dccph_type == DCCP_PKT_SYNC ||
dh->dccph_type == DCCP_PKT_SYNCACK) {
- if (between48(DCCP_SKB_CB(skb)->dccpd_ack_seq, dp->dccps_awl, dp->dccps_awh) &&
+ if (between48(DCCP_SKB_CB(skb)->dccpd_ack_seq,
+ dp->dccps_awl, dp->dccps_awh) &&
!before48(DCCP_SKB_CB(skb)->dccpd_seq, dp->dccps_swl))
dccp_update_gsr(sk, DCCP_SKB_CB(skb)->dccpd_seq);
else
@@ -122,11 +123,13 @@ static int dccp_check_seqno(struct sock *sk, struct sk_buff *skb)
if (between48(DCCP_SKB_CB(skb)->dccpd_seq, lswl, dp->dccps_swh) &&
(DCCP_SKB_CB(skb)->dccpd_ack_seq == DCCP_PKT_WITHOUT_ACK_SEQ ||
- between48(DCCP_SKB_CB(skb)->dccpd_ack_seq, lawl, dp->dccps_awh))) {
+ between48(DCCP_SKB_CB(skb)->dccpd_ack_seq,
+ lawl, dp->dccps_awh))) {
dccp_update_gsr(sk, DCCP_SKB_CB(skb)->dccpd_seq);
if (dh->dccph_type != DCCP_PKT_SYNC &&
- DCCP_SKB_CB(skb)->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ)
+ (DCCP_SKB_CB(skb)->dccpd_ack_seq !=
+ DCCP_PKT_WITHOUT_ACK_SEQ))
dp->dccps_gar = DCCP_SKB_CB(skb)->dccpd_ack_seq;
} else {
dccp_pr_debug("Step 6 failed, sending SYNC...\n");
@@ -161,10 +164,13 @@ int dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
if (dccp_ackpkts_add(dp->dccps_hc_rx_ackpkts,
DCCP_SKB_CB(skb)->dccpd_seq,
DCCP_ACKPKTS_STATE_RECEIVED)) {
- LIMIT_NETDEBUG(KERN_INFO "DCCP: acknowledgeable packets buffer full!\n");
+ LIMIT_NETDEBUG(KERN_INFO "DCCP: acknowledgeable "
+ "packets buffer full!\n");
ap->dccpap_ack_seqno = DCCP_MAX_SEQNO + 1;
inet_csk_schedule_ack(sk);
- inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK, TCP_DELACK_MIN, TCP_RTO_MAX);
+ inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK,
+ TCP_DELACK_MIN,
+ DCCP_RTO_MAX);
goto discard;
}
@@ -175,7 +181,8 @@ int dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
*/
if (!inet_csk_ack_scheduled(sk)) {
inet_csk_schedule_ack(sk);
- inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK, 5 * HZ, TCP_RTO_MAX);
+ inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK, 5 * HZ,
+ DCCP_RTO_MAX);
}
}
@@ -186,8 +193,8 @@ int dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
case DCCP_PKT_DATAACK:
case DCCP_PKT_DATA:
/*
- * FIXME: check if sk_receive_queue is full, schedule DATA_DROPPED option
- * if it is.
+ * FIXME: check if sk_receive_queue is full, schedule DATA_DROPPED
+ * option if it is.
*/
__skb_pull(skb, dh->dccph_doff * 4);
__skb_queue_tail(&sk->sk_receive_queue, skb);
@@ -272,11 +279,13 @@ static int dccp_rcv_request_sent_state_process(struct sock *sk,
__kfree_skb(sk->sk_send_head);
sk->sk_send_head = NULL;
- if (!between48(DCCP_SKB_CB(skb)->dccpd_ack_seq, dp->dccps_awl, dp->dccps_awh)) {
- dccp_pr_debug("invalid ackno: S.AWL=%llu, P.ackno=%llu, S.AWH=%llu \n",
- (unsigned long long) dp->dccps_awl,
- (unsigned long long) DCCP_SKB_CB(skb)->dccpd_ack_seq,
- (unsigned long long) dp->dccps_awh);
+ if (!between48(DCCP_SKB_CB(skb)->dccpd_ack_seq,
+ dp->dccps_awl, dp->dccps_awh)) {
+ dccp_pr_debug("invalid ackno: S.AWL=%llu, "
+ "P.ackno=%llu, S.AWH=%llu \n",
+ (unsigned long long)dp->dccps_awl,
+ (unsigned long long)DCCP_SKB_CB(skb)->dccpd_ack_seq,
+ (unsigned long long)dp->dccps_awh);
goto out_invalid_packet;
}
@@ -296,16 +305,17 @@ static int dccp_rcv_request_sent_state_process(struct sock *sk,
/*
* Step 10: Process REQUEST state (second part)
* If S.state == REQUEST,
- * / * If we get here, P is a valid Response from the server (see
- * Step 4), and we should move to PARTOPEN state. PARTOPEN
- * means send an Ack, don't send Data packets, retransmit
- * Acks periodically, and always include any Init Cookie from
- * the Response * /
+ * / * If we get here, P is a valid Response from the
+ * server (see Step 4), and we should move to
+ * PARTOPEN state. PARTOPEN means send an Ack,
+ * don't send Data packets, retransmit Acks
+ * periodically, and always include any Init Cookie
+ * from the Response * /
* S.state := PARTOPEN
* Set PARTOPEN timer
* Continue with S.state == PARTOPEN
- * / * Step 12 will send the Ack completing the three-way
- * handshake * /
+ * / * Step 12 will send the Ack completing the
+ * three-way handshake * /
*/
dccp_set_state(sk, DCCP_PARTOPEN);
@@ -341,7 +351,8 @@ static int dccp_rcv_request_sent_state_process(struct sock *sk,
out_invalid_packet:
return 1; /* dccp_v4_do_rcv will send a reset, but...
- FIXME: the reset code should be DCCP_RESET_CODE_PACKET_ERROR */
+ FIXME: the reset code should be
+ DCCP_RESET_CODE_PACKET_ERROR */
}
static int dccp_rcv_respond_partopen_state_process(struct sock *sk,
@@ -358,11 +369,12 @@ static int dccp_rcv_respond_partopen_state_process(struct sock *sk,
case DCCP_PKT_DATAACK:
case DCCP_PKT_ACK:
/*
- * FIXME: we should be reseting the PARTOPEN (DELACK) timer here,
- * but only if we haven't used the DELACK timer for something else,
- * like sending a delayed ack for a TIMESTAMP echo, etc, for now
- * were not clearing it, sending an extra ACK when there is nothing
- * else to do in DELACK is not a big deal after all.
+ * FIXME: we should be reseting the PARTOPEN (DELACK) timer
+ * here but only if we haven't used the DELACK timer for
+ * something else, like sending a delayed ack for a TIMESTAMP
+ * echo, etc, for now were not clearing it, sending an extra
+ * ACK when there is nothing else to do in DELACK is not a big
+ * deal after all.
*/
/* Stop the PARTOPEN timer */
@@ -374,7 +386,8 @@ static int dccp_rcv_respond_partopen_state_process(struct sock *sk,
if (dh->dccph_type == DCCP_PKT_DATAACK) {
dccp_rcv_established(sk, skb, dh, len);
- queued = 1; /* packet was queued (by dccp_rcv_established) */
+ queued = 1; /* packet was queued
+ (by dccp_rcv_established) */
}
break;
}
@@ -399,7 +412,8 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
if (dccp_parse_options(sk, skb))
goto discard;
- if (DCCP_SKB_CB(skb)->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ)
+ if (DCCP_SKB_CB(skb)->dccpd_ack_seq !=
+ DCCP_PKT_WITHOUT_ACK_SEQ)
dccp_event_ack_recv(sk, skb);
ccid_hc_rx_packet_recv(dp->dccps_hc_rx_ccid, sk, skb);
@@ -415,14 +429,17 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
DCCP_ACKPKTS_STATE_RECEIVED))
goto discard;
/*
- * FIXME: this activation is probably wrong, have to study more
- * TCP delack machinery and how it fits into DCCP draft, but
- * for now it kinda "works" 8)
+ * FIXME: this activation is probably wrong, have to
+ * study more TCP delack machinery and how it fits into
+ * DCCP draft, but for now it kinda "works" 8)
*/
- if (dp->dccps_hc_rx_ackpkts->dccpap_ack_seqno == DCCP_MAX_SEQNO + 1 &&
+ if ((dp->dccps_hc_rx_ackpkts->dccpap_ack_seqno ==
+ DCCP_MAX_SEQNO + 1) &&
!inet_csk_ack_scheduled(sk)) {
inet_csk_schedule_ack(sk);
- inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK, TCP_DELACK_MIN, TCP_RTO_MAX);
+ inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK,
+ TCP_DELACK_MIN,
+ DCCP_RTO_MAX);
}
}
}
@@ -436,7 +453,10 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
* Drop packet and return
*/
if (dh->dccph_type == DCCP_PKT_RESET) {
- /* Queue the equivalent of TCP fin so that dccp_recvmsg exits the loop */
+ /*
+ * Queue the equivalent of TCP fin so that dccp_recvmsg
+ * exits the loop
+ */
dccp_fin(sk, skb);
dccp_time_wait(sk, DCCP_TIME_WAIT, 0);
return 0;
@@ -450,10 +470,12 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
* Drop packet and return
*/
} else if ((dp->dccps_role != DCCP_ROLE_CLIENT &&
- (dh->dccph_type == DCCP_PKT_RESPONSE || dh->dccph_type == DCCP_PKT_CLOSEREQ)) ||
+ (dh->dccph_type == DCCP_PKT_RESPONSE ||
+ dh->dccph_type == DCCP_PKT_CLOSEREQ)) ||
(dp->dccps_role == DCCP_ROLE_CLIENT &&
dh->dccph_type == DCCP_PKT_REQUEST) ||
- (sk->sk_state == DCCP_RESPOND && dh->dccph_type == DCCP_PKT_DATA)) {
+ (sk->sk_state == DCCP_RESPOND &&
+ dh->dccph_type == DCCP_PKT_DATA)) {
dccp_send_sync(sk, DCCP_SKB_CB(skb)->dccpd_seq);
goto discard;
}
@@ -491,11 +513,13 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
case DCCP_RESPOND:
case DCCP_PARTOPEN:
- queued = dccp_rcv_respond_partopen_state_process(sk, skb, dh, len);
+ queued = dccp_rcv_respond_partopen_state_process(sk, skb,
+ dh, len);
break;
}
- if (dh->dccph_type == DCCP_PKT_ACK || dh->dccph_type == DCCP_PKT_DATAACK) {
+ if (dh->dccph_type == DCCP_PKT_ACK ||
+ dh->dccph_type == DCCP_PKT_DATAACK) {
switch (old_state) {
case DCCP_PARTOPEN:
sk->sk_state_change(sk);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-12 20:19:09 +0000