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yaml
---
r: 44283
b: refs/heads/master
c: a967241
h: refs/heads/master
i:
  44281: 895d568
  44279: fea6342
v: v3
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Gerrit Renker authored and David S. Miller committed Dec 11, 2006
1 parent 23f3ba0 commit bd2c91e
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Showing 2 changed files with 33 additions and 36 deletions.
2 changes: 1 addition & 1 deletion [refs]
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Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: c5a1ae9a4cc4aef1505fa0aba079f834c3ee1af1
refs/heads/master: a967241129f6dc1db92fee2c808f73a90f5f47a3
67 changes: 32 additions & 35 deletions trunk/net/dccp/ccids/ccid3.c
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Original file line number Diff line number Diff line change
Expand Up @@ -201,18 +201,17 @@ static void ccid3_hc_tx_no_feedback_timer(unsigned long data)
goto restart_timer;
}

ccid3_pr_debug("%s, sk=%p, state=%s\n", dccp_role(sk), sk,
ccid3_pr_debug("%s(%p, state=%s) - entry \n", dccp_role(sk), sk,
ccid3_tx_state_name(hctx->ccid3hctx_state));

switch (hctx->ccid3hctx_state) {
case TFRC_SSTATE_NO_FBACK:
/* RFC 3448, 4.4: Halve send rate directly */
hctx->ccid3hctx_x = max_t(u32, hctx->ccid3hctx_x / 2,
(hctx->ccid3hctx_s << 6)/TFRC_T_MBI);

ccid3_pr_debug("%s, sk=%p, state=%s, updated tx rate to %u "
"bytes/s\n",
dccp_role(sk), sk,
ccid3_pr_debug("%s(%p, state=%s), updated tx rate to %u "
"bytes/s\n", dccp_role(sk), sk,
ccid3_tx_state_name(hctx->ccid3hctx_state),
(unsigned)(hctx->ccid3hctx_x >> 6));
/* The value of R is still undefined and so we can not recompute
Expand All @@ -230,7 +229,7 @@ static void ccid3_hc_tx_no_feedback_timer(unsigned long data)
scaled_div(hctx->ccid3hctx_s << 6, hctx->ccid3hctx_rtt))) {
struct timeval now;

ccid3_pr_debug("%s, sk=%p, state=%s, not idle\n",
ccid3_pr_debug("%s(%p, state=%s), not idle\n",
dccp_role(sk), sk,
ccid3_tx_state_name(hctx->ccid3hctx_state));

Expand Down Expand Up @@ -270,7 +269,7 @@ static void ccid3_hc_tx_no_feedback_timer(unsigned long data)
t_nfb = max(hctx->ccid3hctx_t_rto, 2 * hctx->ccid3hctx_t_ipi);
break;
case TFRC_SSTATE_NO_SENT:
DCCP_BUG("Illegal %s state NO_SENT, sk=%p", dccp_role(sk), sk);
DCCP_BUG("%s(%p) - Illegal state NO_SENT", dccp_role(sk), sk);
/* fall through */
case TFRC_SSTATE_TERM:
goto out;
Expand Down Expand Up @@ -348,7 +347,7 @@ static int ccid3_hc_tx_send_packet(struct sock *sk, struct sk_buff *skb)
ccid3_hc_tx_update_win_count(hctx, &now);
break;
case TFRC_SSTATE_TERM:
DCCP_BUG("Illegal %s state TERM, sk=%p", dccp_role(sk), sk);
DCCP_BUG("%s(%p) - Illegal state TERM", dccp_role(sk), sk);
return -EINVAL;
}

Expand Down Expand Up @@ -521,13 +520,12 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb)
* max(t_RTO, 2 * s/X) = max(t_RTO, 2 * t_ipi)
*/
t_nfb = max(hctx->ccid3hctx_t_rto, 2 * hctx->ccid3hctx_t_ipi);

ccid3_pr_debug("%s, sk=%p, Scheduled no feedback timer to "
"expire in %lu jiffies (%luus)\n",
dccp_role(sk), sk,
usecs_to_jiffies(t_nfb), t_nfb);

sk_reset_timer(sk, &hctx->ccid3hctx_no_feedback_timer,
ccid3_pr_debug("%s(%p), Scheduled no feedback timer to "
"expire in %lu jiffies (%luus)\n", dccp_role(sk),
sk, usecs_to_jiffies(t_nfb), t_nfb);

sk_reset_timer(sk, &hctx->ccid3hctx_no_feedback_timer,
jiffies + usecs_to_jiffies(t_nfb));

/* set idle flag */
Expand Down Expand Up @@ -566,34 +564,34 @@ 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)) {
DCCP_WARN("%s, sk=%p, invalid len %d "
DCCP_WARN("%s(%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);
ccid3_pr_debug("%s, sk=%p, LOSS_EVENT_RATE=%u\n",
ccid3_pr_debug("%s(%p), LOSS_EVENT_RATE=%u\n",
dccp_role(sk), sk,
opt_recv->ccid3or_loss_event_rate);
}
break;
case TFRC_OPT_LOSS_INTERVALS:
opt_recv->ccid3or_loss_intervals_idx = idx;
opt_recv->ccid3or_loss_intervals_len = len;
ccid3_pr_debug("%s, sk=%p, LOSS_INTERVALS=(%u, %u)\n",
ccid3_pr_debug("%s(%p), LOSS_INTERVALS=(%u, %u)\n",
dccp_role(sk), sk,
opt_recv->ccid3or_loss_intervals_idx,
opt_recv->ccid3or_loss_intervals_len);
break;
case TFRC_OPT_RECEIVE_RATE:
if (unlikely(len != 4)) {
DCCP_WARN("%s, sk=%p, invalid len %d "
DCCP_WARN("%s(%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);
ccid3_pr_debug("%s, sk=%p, RECEIVE_RATE=%u\n",
ccid3_pr_debug("%s(%p), RECEIVE_RATE=%u\n",
dccp_role(sk), sk,
opt_recv->ccid3or_receive_rate);
}
Expand Down Expand Up @@ -679,7 +677,7 @@ static void ccid3_hc_rx_send_feedback(struct sock *sk)
struct timeval now;
suseconds_t delta;

ccid3_pr_debug("%s, sk=%p\n", dccp_role(sk), sk);
ccid3_pr_debug("%s(%p) - entry \n", dccp_role(sk), sk);

dccp_timestamp(sk, &now);

Expand All @@ -695,13 +693,13 @@ static void ccid3_hc_rx_send_feedback(struct sock *sk)
scaled_div32(hcrx->ccid3hcrx_bytes_recv, delta);
break;
case TFRC_RSTATE_TERM:
DCCP_BUG("Illegal %s state TERM, sk=%p", dccp_role(sk), sk);
DCCP_BUG("%s(%p) - Illegal state TERM", dccp_role(sk), sk);
return;
}

packet = dccp_rx_hist_find_data_packet(&hcrx->ccid3hcrx_hist);
if (unlikely(packet == NULL)) {
DCCP_WARN("%s, sk=%p, no data packet in history!\n",
DCCP_WARN("%s(%p), no data packet in history!\n",
dccp_role(sk), sk);
return;
}
Expand Down Expand Up @@ -797,13 +795,13 @@ static u32 ccid3_hc_rx_calc_first_li(struct sock *sk)
}

if (unlikely(step == 0)) {
DCCP_WARN("%s, sk=%p, packet history has no data packets!\n",
DCCP_WARN("%s(%p), packet history has no data packets!\n",
dccp_role(sk), sk);
return ~0;
}

if (unlikely(interval == 0)) {
DCCP_WARN("%s, sk=%p, Could not find a win_count interval > 0."
DCCP_WARN("%s(%p), Could not find a win_count interval > 0."
"Defaulting to 1\n", dccp_role(sk), sk);
interval = 1;
}
Expand All @@ -817,7 +815,7 @@ static u32 ccid3_hc_rx_calc_first_li(struct sock *sk)
DCCP_BUG_ON(delta < 0);

rtt = delta * 4 / interval;
ccid3_pr_debug("%s, sk=%p, approximated RTT to %ldus\n",
ccid3_pr_debug("%s(%p), approximated RTT to %ldus\n",
dccp_role(sk), sk, rtt);

/*
Expand Down Expand Up @@ -850,7 +848,7 @@ static u32 ccid3_hc_rx_calc_first_li(struct sock *sk)
fval = scaled_div32(fval, x_recv);
p = tfrc_calc_x_reverse_lookup(fval);

ccid3_pr_debug("%s, sk=%p, receive rate=%u bytes/s, implied "
ccid3_pr_debug("%s(%p), receive rate=%u bytes/s, implied "
"loss rate=%u\n", dccp_role(sk), sk, x_recv, p);

if (p == 0)
Expand Down Expand Up @@ -1000,8 +998,8 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
r_sample / 10;

if (rtt_prev != hcrx->ccid3hcrx_rtt)
ccid3_pr_debug("%s, New RTT=%uus, elapsed time=%u\n",
dccp_role(sk), hcrx->ccid3hcrx_rtt,
ccid3_pr_debug("%s(%p), New RTT=%uus, elapsed time=%u\n",
dccp_role(sk), sk, hcrx->ccid3hcrx_rtt,
opt_recv->dccpor_elapsed_time);
break;
case DCCP_PKT_DATA:
Expand All @@ -1013,7 +1011,7 @@ 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, GFP_ATOMIC);
if (unlikely(packet == NULL)) {
DCCP_WARN("%s, sk=%p, Not enough mem to add rx packet "
DCCP_WARN("%s(%p), Not enough mem to add rx packet "
"to history, consider it lost!\n", dccp_role(sk), sk);
return;
}
Expand All @@ -1028,9 +1026,8 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)

switch (hcrx->ccid3hcrx_state) {
case TFRC_RSTATE_NO_DATA:
ccid3_pr_debug("%s, sk=%p(%s), skb=%p, sending initial "
"feedback\n",
dccp_role(sk), sk,
ccid3_pr_debug("%s(%p, state=%s), skb=%p, sending initial "
"feedback\n", dccp_role(sk), sk,
dccp_state_name(sk->sk_state), skb);
ccid3_hc_rx_send_feedback(sk);
ccid3_hc_rx_set_state(sk, TFRC_RSTATE_DATA);
Expand All @@ -1048,12 +1045,12 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
}
return;
case TFRC_RSTATE_TERM:
DCCP_BUG("Illegal %s state TERM, sk=%p", dccp_role(sk), sk);
DCCP_BUG("%s(%p) - Illegal state TERM", dccp_role(sk), sk);
return;
}

/* Dealing with packet loss */
ccid3_pr_debug("%s, sk=%p(%s), data loss! Reacting...\n",
ccid3_pr_debug("%s(%p, state=%s), data loss! Reacting...\n",
dccp_role(sk), sk, dccp_state_name(sk->sk_state));

p_prev = hcrx->ccid3hcrx_p;
Expand All @@ -1078,7 +1075,7 @@ static int ccid3_hc_rx_init(struct ccid *ccid, struct sock *sk)
{
struct ccid3_hc_rx_sock *hcrx = ccid_priv(ccid);

ccid3_pr_debug("%s, sk=%p\n", dccp_role(sk), sk);
ccid3_pr_debug("entry\n");

hcrx->ccid3hcrx_state = TFRC_RSTATE_NO_DATA;
INIT_LIST_HEAD(&hcrx->ccid3hcrx_hist);
Expand Down

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