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path: root/net/dccp/ccids/ccid3.c
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Diffstat (limited to 'net/dccp/ccids/ccid3.c')
-rw-r--r--net/dccp/ccids/ccid3.c132
1 files changed, 55 insertions, 77 deletions
diff --git a/net/dccp/ccids/ccid3.c b/net/dccp/ccids/ccid3.c
index 7db801ec1ab..4eada515b77 100644
--- a/net/dccp/ccids/ccid3.c
+++ b/net/dccp/ccids/ccid3.c
@@ -176,8 +176,6 @@ static void ccid3_hc_tx_no_feedback_timer(unsigned long data)
ccid3_tx_state_name(hctx->ccid3hctx_state));
switch (hctx->ccid3hctx_state) {
- case TFRC_SSTATE_TERM:
- goto out;
case TFRC_SSTATE_NO_FBACK:
/* Halve send rate */
hctx->ccid3hctx_x /= 2;
@@ -240,9 +238,10 @@ static void ccid3_hc_tx_no_feedback_timer(unsigned long data)
2 * usecs_div(hctx->ccid3hctx_s,
hctx->ccid3hctx_x));
break;
- default:
- DCCP_BUG("%s, sk=%p, Illegal state (%d)!", dccp_role(sk), sk,
- hctx->ccid3hctx_state);
+ case TFRC_SSTATE_NO_SENT:
+ DCCP_BUG("Illegal %s state NO_SENT, sk=%p", dccp_role(sk), sk);
+ /* fall through */
+ case TFRC_SSTATE_TERM:
goto out;
}
@@ -264,7 +263,7 @@ static int ccid3_hc_tx_send_packet(struct sock *sk,
long delay;
int rc = -ENOTCONN;
- BUG_ON(hctx == NULL || hctx->ccid3hctx_state == TFRC_SSTATE_TERM);
+ BUG_ON(hctx == NULL);
/* Check if pure ACK or Terminating*/
/*
@@ -282,9 +281,8 @@ static int ccid3_hc_tx_send_packet(struct sock *sk,
rc = -ENOBUFS;
if (unlikely(new_packet == NULL)) {
- LIMIT_NETDEBUG(KERN_WARNING "%s: %s, sk=%p, not enough "
- "mem to add to history, send refused\n",
- __FUNCTION__, dccp_role(sk), sk);
+ DCCP_WARN("%s, sk=%p, not enough mem to add to history,"
+ "send refused\n", dccp_role(sk), sk);
goto out;
}
@@ -317,9 +315,8 @@ static int ccid3_hc_tx_send_packet(struct sock *sk,
/* divide by -1000 is to convert to ms and get sign right */
rc = delay > 0 ? delay : 0;
break;
- default:
- DCCP_BUG("%s, sk=%p, Illegal state (%d)!", dccp_role(sk), sk,
- hctx->ccid3hctx_state);
+ case TFRC_SSTATE_TERM:
+ DCCP_BUG("Illegal %s state TERM, sk=%p", dccp_role(sk), sk);
rc = -EINVAL;
break;
}
@@ -343,7 +340,7 @@ static void ccid3_hc_tx_packet_sent(struct sock *sk, int more, int len)
struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
struct timeval now;
- BUG_ON(hctx == NULL || hctx->ccid3hctx_state == TFRC_SSTATE_TERM);
+ BUG_ON(hctx == NULL);
dccp_timestamp(sk, &now);
@@ -354,13 +351,11 @@ static void ccid3_hc_tx_packet_sent(struct sock *sk, int more, int len)
packet = dccp_tx_hist_head(&hctx->ccid3hctx_hist);
if (unlikely(packet == NULL)) {
- LIMIT_NETDEBUG(KERN_WARNING "%s: packet doesn't "
- "exists in history!\n", __FUNCTION__);
+ DCCP_WARN("packet doesn't exist in history!\n");
return;
}
if (unlikely(packet->dccphtx_sent)) {
- LIMIT_NETDEBUG(KERN_WARNING "%s: no unsent packet in "
- "history!\n", __FUNCTION__);
+ DCCP_WARN("no unsent packet in history!\n");
return;
}
packet->dccphtx_tstamp = now;
@@ -395,9 +390,8 @@ static void ccid3_hc_tx_packet_sent(struct sock *sk, int more, int len)
case TFRC_SSTATE_NO_SENT:
/* if first wasn't pure ack */
if (len != 0)
- printk(KERN_CRIT "%s: %s, First packet sent is noted "
- "as a data packet\n",
- __FUNCTION__, dccp_role(sk));
+ DCCP_CRIT("%s, First packet sent is noted "
+ "as a data packet", dccp_role(sk));
return;
case TFRC_SSTATE_NO_FBACK:
case TFRC_SSTATE_FBACK:
@@ -410,9 +404,8 @@ static void ccid3_hc_tx_packet_sent(struct sock *sk, int more, int len)
hctx->ccid3hctx_t_ipi);
}
break;
- default:
- DCCP_BUG("%s, sk=%p, Illegal state (%d)!", dccp_role(sk), sk,
- hctx->ccid3hctx_state);
+ case TFRC_SSTATE_TERM:
+ DCCP_BUG("Illegal %s state TERM, sk=%p", dccp_role(sk), sk);
break;
}
}
@@ -430,7 +423,7 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
u32 x_recv;
u32 r_sample;
- BUG_ON(hctx == NULL || hctx->ccid3hctx_state == TFRC_SSTATE_TERM);
+ BUG_ON(hctx == NULL);
/* we are only interested in ACKs */
if (!(DCCP_SKB_CB(skb)->dccpd_type == DCCP_PKT_ACK ||
@@ -455,11 +448,10 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
packet = dccp_tx_hist_find_entry(&hctx->ccid3hctx_hist,
DCCP_SKB_CB(skb)->dccpd_ack_seq);
if (unlikely(packet == NULL)) {
- LIMIT_NETDEBUG(KERN_WARNING "%s: %s, sk=%p, seqno "
- "%llu(%s) does't exist in history!\n",
- __FUNCTION__, dccp_role(sk), sk,
+ DCCP_WARN("%s, sk=%p, seqno %llu(%s) does't exist "
+ "in history!\n", dccp_role(sk), sk,
(unsigned long long)DCCP_SKB_CB(skb)->dccpd_ack_seq,
- dccp_packet_name(DCCP_SKB_CB(skb)->dccpd_type));
+ dccp_packet_name(DCCP_SKB_CB(skb)->dccpd_type));
return;
}
@@ -467,9 +459,8 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
dccp_timestamp(sk, &now);
r_sample = timeval_delta(&now, &packet->dccphtx_tstamp);
if (unlikely(r_sample <= t_elapsed))
- LIMIT_NETDEBUG(KERN_WARNING "%s: r_sample=%uus, "
- "t_elapsed=%uus\n",
- __FUNCTION__, r_sample, t_elapsed);
+ DCCP_WARN("r_sample=%uus,t_elapsed=%uus\n",
+ r_sample, t_elapsed);
else
r_sample -= t_elapsed;
@@ -554,9 +545,8 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
/* set idle flag */
hctx->ccid3hctx_idle = 1;
break;
- default:
- DCCP_BUG("%s, sk=%p, Illegal state (%d)!", dccp_role(sk), sk,
- hctx->ccid3hctx_state);
+ case TFRC_SSTATE_TERM:
+ DCCP_BUG("Illegal %s state TERM, sk=%p", dccp_role(sk), sk);
break;
}
}
@@ -596,9 +586,9 @@ static int ccid3_hc_tx_parse_options(struct sock *sk, unsigned char option,
switch (option) {
case TFRC_OPT_LOSS_EVENT_RATE:
if (unlikely(len != 4)) {
- LIMIT_NETDEBUG(KERN_WARNING "%s: %s, sk=%p, invalid "
- "len for TFRC_OPT_LOSS_EVENT_RATE\n",
- __FUNCTION__, dccp_role(sk), sk);
+ DCCP_WARN("%s, sk=%p, invalid len %d "
+ "for TFRC_OPT_LOSS_EVENT_RATE\n",
+ dccp_role(sk), sk, len);
rc = -EINVAL;
} else {
opt_recv->ccid3or_loss_event_rate = ntohl(*(__be32 *)value);
@@ -617,9 +607,9 @@ static int ccid3_hc_tx_parse_options(struct sock *sk, unsigned char option,
break;
case TFRC_OPT_RECEIVE_RATE:
if (unlikely(len != 4)) {
- LIMIT_NETDEBUG(KERN_WARNING "%s: %s, sk=%p, invalid "
- "len for TFRC_OPT_RECEIVE_RATE\n",
- __FUNCTION__, dccp_role(sk), sk);
+ DCCP_WARN("%s, sk=%p, invalid len %d "
+ "for TFRC_OPT_RECEIVE_RATE\n",
+ dccp_role(sk), sk, len);
rc = -EINVAL;
} else {
opt_recv->ccid3or_receive_rate = ntohl(*(__be32 *)value);
@@ -722,17 +712,15 @@ static void ccid3_hc_rx_send_feedback(struct sock *sk)
delta);
}
break;
- default:
- DCCP_BUG("%s, sk=%p, Illegal state (%d)!", dccp_role(sk), sk,
- hcrx->ccid3hcrx_state);
+ case TFRC_RSTATE_TERM:
+ DCCP_BUG("Illegal %s state TERM, sk=%p", dccp_role(sk), sk);
return;
}
packet = dccp_rx_hist_find_data_packet(&hcrx->ccid3hcrx_hist);
if (unlikely(packet == NULL)) {
- LIMIT_NETDEBUG(KERN_WARNING "%s: %s, sk=%p, no data packet "
- "in history!\n",
- __FUNCTION__, dccp_role(sk), sk);
+ DCCP_WARN("%s, sk=%p, no data packet in history!\n",
+ dccp_role(sk), sk);
return;
}
@@ -820,29 +808,29 @@ static u32 ccid3_hc_rx_calc_first_li(struct sock *sk)
}
if (unlikely(step == 0)) {
- LIMIT_NETDEBUG(KERN_WARNING "%s: %s, sk=%p, packet history "
- "contains no data packets!\n",
- __FUNCTION__, dccp_role(sk), sk);
+ DCCP_WARN("%s, sk=%p, packet history has no data packets!\n",
+ dccp_role(sk), sk);
return ~0;
}
if (unlikely(interval == 0)) {
- LIMIT_NETDEBUG(KERN_WARNING "%s: %s, sk=%p, Could not find a "
- "win_count interval > 0. Defaulting to 1\n",
- __FUNCTION__, dccp_role(sk), sk);
+ DCCP_WARN("%s, sk=%p, Could not find a win_count interval > 0."
+ "Defaulting to 1\n", dccp_role(sk), sk);
interval = 1;
}
found:
if (!tail) {
- LIMIT_NETDEBUG(KERN_WARNING "%s: tail is null\n",
- __FUNCTION__);
+ DCCP_CRIT("tail is null\n");
return ~0;
}
rtt = timeval_delta(&tstamp, &tail->dccphrx_tstamp) * 4 / interval;
ccid3_pr_debug("%s, sk=%p, approximated RTT to %uus\n",
dccp_role(sk), sk, rtt);
- if (rtt == 0)
- rtt = 1;
+
+ if (rtt == 0) {
+ DCCP_WARN("RTT==0, setting to 1\n");
+ rtt = 1;
+ }
dccp_timestamp(sk, &tstamp);
delta = timeval_delta(&tstamp, &hcrx->ccid3hcrx_tstamp_last_feedback);
@@ -856,9 +844,7 @@ found:
tmp2 = (u32)tmp1;
if (!tmp2) {
- LIMIT_NETDEBUG(KERN_WARNING "tmp2 = 0 "
- "%s: x_recv = %u, rtt =%u\n",
- __FUNCTION__, x_recv, rtt);
+ DCCP_CRIT("tmp2 = 0, x_recv = %u, rtt =%u\n", x_recv, rtt);
return ~0;
}
@@ -904,8 +890,7 @@ static void ccid3_hc_rx_update_li(struct sock *sk, u64 seq_loss, u8 win_loss)
entry = dccp_li_hist_entry_new(ccid3_li_hist, SLAB_ATOMIC);
if (entry == NULL) {
- printk(KERN_CRIT "%s: out of memory\n",__FUNCTION__);
- dump_stack();
+ DCCP_BUG("out of memory - can not allocate entry");
return;
}
@@ -984,9 +969,7 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
u32 p_prev, rtt_prev, r_sample, t_elapsed;
int loss;
- BUG_ON(hcrx == NULL ||
- !(hcrx->ccid3hcrx_state == TFRC_RSTATE_NO_DATA ||
- hcrx->ccid3hcrx_state == TFRC_RSTATE_DATA));
+ BUG_ON(hcrx == NULL);
opt_recv = &dccp_sk(sk)->dccps_options_received;
@@ -1004,9 +987,8 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
t_elapsed = opt_recv->dccpor_elapsed_time * 10;
if (unlikely(r_sample <= t_elapsed))
- LIMIT_NETDEBUG(KERN_WARNING "%s: r_sample=%uus, "
- "t_elapsed=%uus\n",
- __FUNCTION__, r_sample, t_elapsed);
+ DCCP_WARN("r_sample=%uus, t_elapsed=%uus\n",
+ r_sample, t_elapsed);
else
r_sample -= t_elapsed;
@@ -1030,9 +1012,8 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
packet = dccp_rx_hist_entry_new(ccid3_rx_hist, sk, opt_recv->dccpor_ndp,
skb, SLAB_ATOMIC);
if (unlikely(packet == NULL)) {
- LIMIT_NETDEBUG(KERN_WARNING "%s: %s, sk=%p, Not enough mem to "
- "add rx packet to history, consider it lost!\n",
- __FUNCTION__, dccp_role(sk), sk);
+ DCCP_WARN("%s, sk=%p, Not enough mem to add rx packet "
+ "to history, consider it lost!\n", dccp_role(sk), sk);
return;
}
@@ -1065,9 +1046,8 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
ccid3_hc_rx_send_feedback(sk);
}
return;
- default:
- DCCP_BUG("%s, sk=%p, Illegal state (%d)!", dccp_role(sk), sk,
- hcrx->ccid3hcrx_state);
+ case TFRC_RSTATE_TERM:
+ DCCP_BUG("Illegal %s state TERM, sk=%p", dccp_role(sk), sk);
return;
}
@@ -1084,10 +1064,8 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
/* Scaling up by 1000000 as fixed decimal */
if (i_mean != 0)
hcrx->ccid3hcrx_p = 1000000 / i_mean;
- } else {
- printk(KERN_CRIT "%s: empty loss hist\n",__FUNCTION__);
- dump_stack();
- }
+ } else
+ DCCP_BUG("empty loss history");
if (hcrx->ccid3hcrx_p > p_prev) {
ccid3_hc_rx_send_feedback(sk);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-28 09:34:56 +0000