int sysctl_tcp_westwood;
int sysctl_tcp_vegas_cong_avoid;
-int sysctl_tcp_moderate_rcvbuf;
+int sysctl_tcp_moderate_rcvbuf = 1;
/* Default values of the Vegas variables, in fixed-point representation
* with V_PARAM_SHIFT bits to the right of the binary point.
int sysctl_tcp_vegas_alpha = 1<<V_PARAM_SHIFT;
int sysctl_tcp_vegas_beta = 3<<V_PARAM_SHIFT;
int sysctl_tcp_vegas_gamma = 1<<V_PARAM_SHIFT;
-int sysctl_tcp_bic;
+int sysctl_tcp_bic = 1;
int sysctl_tcp_bic_fast_convergence = 1;
int sysctl_tcp_bic_low_window = 14;
tp->snd_cwnd_stamp = tcp_time_stamp;
}
+static void init_bictcp(struct tcp_opt *tp)
+{
+ tp->bictcp.cnt = 0;
+
+ tp->bictcp.last_max_cwnd = 0;
+ tp->bictcp.last_cwnd = 0;
+ tp->bictcp.last_stamp = 0;
+}
+
/* 5. Recalculate window clamp after socket hit its memory bounds. */
static void tcp_clamp_window(struct sock *sk, struct tcp_opt *tp)
{
* restart window, so that we send ACKs quickly.
*/
tcp_incr_quickack(tp);
- tcp_mem_reclaim(sk);
+ sk_stream_mem_reclaim(sk);
}
}
tp->ack.lrcvtime = now;
/* This exciting event is worth to be remembered. 8) */
if (ts)
- NET_INC_STATS_BH(TCPTSReorder);
+ NET_INC_STATS_BH(LINUX_MIB_TCPTSREORDER);
else if (IsReno(tp))
- NET_INC_STATS_BH(TCPRenoReorder);
+ NET_INC_STATS_BH(LINUX_MIB_TCPRENOREORDER);
else if (IsFack(tp))
- NET_INC_STATS_BH(TCPFACKReorder);
+ NET_INC_STATS_BH(LINUX_MIB_TCPFACKREORDER);
else
- NET_INC_STATS_BH(TCPSACKReorder);
+ NET_INC_STATS_BH(LINUX_MIB_TCPSACKREORDER);
#if FASTRETRANS_DEBUG > 1
printk(KERN_DEBUG "Disorder%d %d %u f%u s%u rr%d\n",
tp->sack_ok, tp->ca_state,
if (before(start_seq, ack)) {
dup_sack = 1;
tp->sack_ok |= 4;
- NET_INC_STATS_BH(TCPDSACKRecv);
+ NET_INC_STATS_BH(LINUX_MIB_TCPDSACKRECV);
} else if (num_sacks > 1 &&
!after(end_seq, ntohl(sp[1].end_seq)) &&
!before(start_seq, ntohl(sp[1].start_seq))) {
dup_sack = 1;
tp->sack_ok |= 4;
- NET_INC_STATS_BH(TCPDSACKOfoRecv);
+ NET_INC_STATS_BH(LINUX_MIB_TCPDSACKOFORECV);
}
/* D-SACK for already forgotten data...
if (after(end_seq, tp->high_seq))
flag |= FLAG_DATA_LOST;
- for_retrans_queue(skb, sk, tp) {
+ sk_stream_for_retrans_queue(skb, sk) {
u8 sacked = TCP_SKB_CB(skb)->sacked;
int in_sack;
if (lost_retrans && tp->ca_state == TCP_CA_Recovery) {
struct sk_buff *skb;
- for_retrans_queue(skb, sk, tp) {
+ sk_stream_for_retrans_queue(skb, sk) {
if (after(TCP_SKB_CB(skb)->seq, lost_retrans))
break;
if (!after(TCP_SKB_CB(skb)->end_seq, tp->snd_una))
tp->lost_out++;
TCP_SKB_CB(skb)->sacked |= TCPCB_LOST;
flag |= FLAG_DATA_SACKED;
- NET_INC_STATS_BH(TCPLostRetransmit);
+ NET_INC_STATS_BH(LINUX_MIB_TCPLOSTRETRANSMIT);
}
}
}
tp->undo_marker = tp->snd_una;
tp->undo_retrans = 0;
- for_retrans_queue(skb, sk, tp) {
+ sk_stream_for_retrans_queue(skb, sk) {
TCP_SKB_CB(skb)->sacked &= ~TCPCB_RETRANS;
}
tcp_sync_left_out(tp);
tp->lost_out = 0;
tp->fackets_out = 0;
- for_retrans_queue(skb, sk, tp) {
+ sk_stream_for_retrans_queue(skb, sk) {
cnt++;
TCP_SKB_CB(skb)->sacked &= ~TCPCB_LOST;
if (!(TCP_SKB_CB(skb)->sacked&TCPCB_SACKED_ACKED)) {
tcp_set_ca_state(tp, TCP_CA_Loss);
tp->high_seq = tp->frto_highmark;
TCP_ECN_queue_cwr(tp);
+
+ init_bictcp(tp);
}
void tcp_clear_retrans(struct tcp_opt *tp)
if (!how)
tp->undo_marker = tp->snd_una;
- for_retrans_queue(skb, sk, tp) {
+ sk_stream_for_retrans_queue(skb, sk) {
cnt++;
if (TCP_SKB_CB(skb)->sacked&TCPCB_RETRANS)
tp->undo_marker = 0;
*/
if ((skb = skb_peek(&sk->sk_write_queue)) != NULL &&
(TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_ACKED)) {
- NET_INC_STATS_BH(TCPSACKReneging);
+ NET_INC_STATS_BH(LINUX_MIB_TCPSACKRENEGING);
tcp_enter_loss(sk, 1);
tp->retransmits++;
BUG_TRAP(cnt <= tp->packets_out);
- for_retrans_queue(skb, sk, tp) {
+ sk_stream_for_retrans_queue(skb, sk) {
if (--cnt < 0 || after(TCP_SKB_CB(skb)->end_seq, high_seq))
break;
if (!(TCP_SKB_CB(skb)->sacked&TCPCB_TAGBITS)) {
if (tcp_head_timedout(sk, tp)) {
struct sk_buff *skb;
- for_retrans_queue(skb, sk, tp) {
+ sk_stream_for_retrans_queue(skb, sk) {
if (tcp_skb_timedout(tp, skb) &&
!(TCP_SKB_CB(skb)->sacked&TCPCB_TAGBITS)) {
TCP_SKB_CB(skb)->sacked |= TCPCB_LOST;
DBGUNDO(sk, tp, tp->ca_state == TCP_CA_Loss ? "loss" : "retrans");
tcp_undo_cwr(tp, 1);
if (tp->ca_state == TCP_CA_Loss)
- NET_INC_STATS_BH(TCPLossUndo);
+ NET_INC_STATS_BH(LINUX_MIB_TCPLOSSUNDO);
else
- NET_INC_STATS_BH(TCPFullUndo);
+ NET_INC_STATS_BH(LINUX_MIB_TCPFULLUNDO);
tp->undo_marker = 0;
}
if (tp->snd_una == tp->high_seq && IsReno(tp)) {
DBGUNDO(sk, tp, "D-SACK");
tcp_undo_cwr(tp, 1);
tp->undo_marker = 0;
- NET_INC_STATS_BH(TCPDSACKUndo);
+ NET_INC_STATS_BH(LINUX_MIB_TCPDSACKUNDO);
}
}
DBGUNDO(sk, tp, "Hoe");
tcp_undo_cwr(tp, 0);
- NET_INC_STATS_BH(TCPPartialUndo);
+ NET_INC_STATS_BH(LINUX_MIB_TCPPARTIALUNDO);
/* So... Do not make Hoe's retransmit yet.
* If the first packet was delayed, the rest
{
if (tcp_may_undo(tp)) {
struct sk_buff *skb;
- for_retrans_queue(skb, sk, tp) {
+ sk_stream_for_retrans_queue(skb, sk) {
TCP_SKB_CB(skb)->sacked &= ~TCPCB_LOST;
}
DBGUNDO(sk, tp, "partial loss");
tp->lost_out = 0;
tp->left_out = tp->sacked_out;
tcp_undo_cwr(tp, 1);
- NET_INC_STATS_BH(TCPLossUndo);
+ NET_INC_STATS_BH(LINUX_MIB_TCPLOSSUNDO);
tp->retransmits = 0;
tp->undo_marker = 0;
if (!IsReno(tp))
tp->ca_state != TCP_CA_Open &&
tp->fackets_out > tp->reordering) {
tcp_mark_head_lost(sk, tp, tp->fackets_out-tp->reordering, tp->high_seq);
- NET_INC_STATS_BH(TCPLoss);
+ NET_INC_STATS_BH(LINUX_MIB_TCPLOSS);
}
/* D. Synchronize left_out to current state. */
/* Otherwise enter Recovery state */
if (IsReno(tp))
- NET_INC_STATS_BH(TCPRenoRecovery);
+ NET_INC_STATS_BH(LINUX_MIB_TCPRENORECOVERY);
else
- NET_INC_STATS_BH(TCPSackRecovery);
+ NET_INC_STATS_BH(LINUX_MIB_TCPSACKRECOVERY);
tp->high_seq = tp->snd_nxt;
tp->prior_ssthresh = 0;
if (!sysctl_tcp_bic)
return tp->snd_cwnd;
- if (tp->bictcp.last_cwnd == tp->snd_cwnd)
- return tp->bictcp.cnt; /* same cwnd, no update */
-
+ if (tp->bictcp.last_cwnd == tp->snd_cwnd &&
+ (s32)(tcp_time_stamp - tp->bictcp.last_stamp) <= (HZ>>5))
+ return tp->bictcp.cnt;
+
tp->bictcp.last_cwnd = tp->snd_cwnd;
+ tp->bictcp.last_stamp = tcp_time_stamp;
/* start off normal */
if (tp->snd_cwnd <= sysctl_tcp_bic_low_window)
int acked = 0;
__s32 seq_rtt = -1;
- while ((skb = skb_peek(&sk->sk_write_queue)) && skb != tp->send_head) {
+ while ((skb = skb_peek(&sk->sk_write_queue)) && skb != sk->sk_send_head) {
struct tcp_skb_cb *scb = TCP_SKB_CB(skb);
__u8 sacked = scb->sacked;
tp->fackets_out--;
tp->packets_out--;
__skb_unlink(skb, skb->list);
- tcp_free_skb(sk, skb);
+ sk_stream_free_skb(sk, skb);
}
if (acked&FLAG_ACKED) {
/* Was it a usable window open? */
- if (!after(TCP_SKB_CB(tp->send_head)->end_seq,
+ if (!after(TCP_SKB_CB(sk->sk_send_head)->end_seq,
tp->snd_una + tp->snd_wnd)) {
tp->backoff = 0;
tcp_clear_xmit_timer(sk, TCP_TIME_PROBE0);
tcp_westwood_fast_bw(sk, skb);
flag |= FLAG_WIN_UPDATE;
- NET_INC_STATS_BH(TCPHPAcks);
+ NET_INC_STATS_BH(LINUX_MIB_TCPHPACKS);
} else {
if (ack_seq != TCP_SKB_CB(skb)->end_seq)
flag |= FLAG_DATA;
else
- NET_INC_STATS_BH(TCPPureAcks);
+ NET_INC_STATS_BH(LINUX_MIB_TCPPUREACKS);
flag |= tcp_ack_update_window(sk, tp, skb, ack, ack_seq);
* being used to time the probes, and is probably far higher than
* it needs to be for normal retransmission.
*/
- if (tp->send_head)
+ if (sk->sk_send_head)
tcp_ack_probe(sk);
return 1;
__skb_queue_purge(&tp->out_of_order_queue);
if (tp->sack_ok)
tcp_sack_reset(tp);
- tcp_mem_reclaim(sk);
+ sk_stream_mem_reclaim(sk);
if (!sock_flag(sk, SOCK_DEAD)) {
sk->sk_state_change(sk);
{
if (tp->sack_ok && sysctl_tcp_dsack) {
if (before(seq, tp->rcv_nxt))
- NET_INC_STATS_BH(TCPDSACKOldSent);
+ NET_INC_STATS_BH(LINUX_MIB_TCPDSACKOLDSENT);
else
- NET_INC_STATS_BH(TCPDSACKOfoSent);
+ NET_INC_STATS_BH(LINUX_MIB_TCPDSACKOFOSENT);
tp->dsack = 1;
tp->duplicate_sack[0].start_seq = seq;
if (TCP_SKB_CB(skb)->end_seq != TCP_SKB_CB(skb)->seq &&
before(TCP_SKB_CB(skb)->seq, tp->rcv_nxt)) {
- NET_INC_STATS_BH(DelayedACKLost);
+ NET_INC_STATS_BH(LINUX_MIB_DELAYEDACKLOST);
tcp_enter_quickack_mode(tp);
if (tp->sack_ok && sysctl_tcp_dsack) {
}
}
-static inline int tcp_rmem_schedule(struct sock *sk, struct sk_buff *skb)
-{
- return (int)skb->truesize <= sk->sk_forward_alloc ||
- tcp_mem_schedule(sk, skb->truesize, 1);
-}
-
static int tcp_prune_queue(struct sock *sk);
static void tcp_data_queue(struct sock *sk, struct sk_buff *skb)
queue_and_out:
if (eaten < 0 &&
(atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf ||
- !tcp_rmem_schedule(sk, skb))) {
- if (tcp_prune_queue(sk) < 0 || !tcp_rmem_schedule(sk, skb))
+ !sk_stream_rmem_schedule(sk, skb))) {
+ if (tcp_prune_queue(sk) < 0 ||
+ !sk_stream_rmem_schedule(sk, skb))
goto drop;
}
- tcp_set_owner_r(skb, sk);
+ sk_stream_set_owner_r(skb, sk);
__skb_queue_tail(&sk->sk_receive_queue, skb);
}
tp->rcv_nxt = TCP_SKB_CB(skb)->end_seq;
if (!after(TCP_SKB_CB(skb)->end_seq, tp->rcv_nxt)) {
/* A retransmit, 2nd most common case. Force an immediate ack. */
- NET_INC_STATS_BH(DelayedACKLost);
+ NET_INC_STATS_BH(LINUX_MIB_DELAYEDACKLOST);
tcp_dsack_set(tp, TCP_SKB_CB(skb)->seq, TCP_SKB_CB(skb)->end_seq);
out_of_window:
TCP_ECN_check_ce(tp, skb);
if (atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf ||
- !tcp_rmem_schedule(sk, skb)) {
- if (tcp_prune_queue(sk) < 0 || !tcp_rmem_schedule(sk, skb))
+ !sk_stream_rmem_schedule(sk, skb)) {
+ if (tcp_prune_queue(sk) < 0 ||
+ !sk_stream_rmem_schedule(sk, skb))
goto drop;
}
SOCK_DEBUG(sk, "out of order segment: rcv_next %X seq %X - %X\n",
tp->rcv_nxt, TCP_SKB_CB(skb)->seq, TCP_SKB_CB(skb)->end_seq);
- tcp_set_owner_r(skb, sk);
+ sk_stream_set_owner_r(skb, sk);
if (!skb_peek(&tp->out_of_order_queue)) {
/* Initial out of order segment, build 1 SACK. */
struct sk_buff *next = skb->next;
__skb_unlink(skb, skb->list);
__kfree_skb(skb);
- NET_INC_STATS_BH(TCPRcvCollapsed);
+ NET_INC_STATS_BH(LINUX_MIB_TCPRCVCOLLAPSED);
skb = next;
continue;
}
memcpy(nskb->cb, skb->cb, sizeof(skb->cb));
TCP_SKB_CB(nskb)->seq = TCP_SKB_CB(nskb)->end_seq = start;
__skb_insert(nskb, skb->prev, skb, skb->list);
- tcp_set_owner_r(nskb, sk);
+ sk_stream_set_owner_r(nskb, sk);
/* Copy data, releasing collapsed skbs. */
while (copy > 0) {
struct sk_buff *next = skb->next;
__skb_unlink(skb, skb->list);
__kfree_skb(skb);
- NET_INC_STATS_BH(TCPRcvCollapsed);
+ NET_INC_STATS_BH(LINUX_MIB_TCPRCVCOLLAPSED);
skb = next;
if (skb == tail || skb->h.th->syn || skb->h.th->fin)
return;
SOCK_DEBUG(sk, "prune_queue: c=%x\n", tp->copied_seq);
- NET_INC_STATS_BH(PruneCalled);
+ NET_INC_STATS_BH(LINUX_MIB_PRUNECALLED);
if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf)
tcp_clamp_window(sk, tp);
tcp_collapse(sk, sk->sk_receive_queue.next,
(struct sk_buff*)&sk->sk_receive_queue,
tp->copied_seq, tp->rcv_nxt);
- tcp_mem_reclaim(sk);
+ sk_stream_mem_reclaim(sk);
if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf)
return 0;
/* First, purge the out_of_order queue. */
if (skb_queue_len(&tp->out_of_order_queue)) {
- NET_ADD_STATS_BH(OfoPruned,
+ NET_ADD_STATS_BH(LINUX_MIB_OFOPRUNED,
skb_queue_len(&tp->out_of_order_queue));
__skb_queue_purge(&tp->out_of_order_queue);
*/
if (tp->sack_ok)
tcp_sack_reset(tp);
- tcp_mem_reclaim(sk);
+ sk_stream_mem_reclaim(sk);
}
if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf)
* drop receive data on the floor. It will get retransmitted
* and hopefully then we'll have sufficient space.
*/
- NET_INC_STATS_BH(RcvPruned);
+ NET_INC_STATS_BH(LINUX_MIB_RCVPRUNED);
/* Massive buffer overcommit. */
tp->pred_flags = 0;
/* When incoming ACK allowed to free some skb from write_queue,
- * we remember this event in flag tp->queue_shrunk and wake up socket
+ * we remember this event in flag sk->sk_queue_shrunk and wake up socket
* on the exit from tcp input handler.
*
* PROBLEM: sndbuf expansion does not work well with largesend.
static inline void tcp_check_space(struct sock *sk)
{
- struct tcp_opt *tp = tcp_sk(sk);
-
- if (tp->queue_shrunk) {
- tp->queue_shrunk = 0;
+ if (sk->sk_queue_shrunk) {
+ sk->sk_queue_shrunk = 0;
if (sk->sk_socket &&
test_bit(SOCK_NOSPACE, &sk->sk_socket->flags))
tcp_new_space(sk);
static __inline__ void tcp_data_snd_check(struct sock *sk)
{
- struct tcp_opt *tp = tcp_sk(sk);
- struct sk_buff *skb = tp->send_head;
+ struct sk_buff *skb = sk->sk_send_head;
if (skb != NULL)
__tcp_data_snd_check(sk, skb);
tcp_data_snd_check(sk);
return 0;
} else { /* Header too small */
- TCP_INC_STATS_BH(TcpInErrs);
+ TCP_INC_STATS_BH(TCP_MIB_INERRS);
goto discard;
}
} else {
__skb_pull(skb, tcp_header_len);
tp->rcv_nxt = TCP_SKB_CB(skb)->end_seq;
- NET_INC_STATS_BH(TCPHPHitsToUser);
+ NET_INC_STATS_BH(LINUX_MIB_TCPHPHITSTOUSER);
eaten = 1;
}
}
if ((int)skb->truesize > sk->sk_forward_alloc)
goto step5;
- NET_INC_STATS_BH(TCPHPHits);
+ NET_INC_STATS_BH(LINUX_MIB_TCPHPHITS);
/* Bulk data transfer: receiver */
__skb_pull(skb,tcp_header_len);
__skb_queue_tail(&sk->sk_receive_queue, skb);
- tcp_set_owner_r(skb, sk);
+ sk_stream_set_owner_r(skb, sk);
tp->rcv_nxt = TCP_SKB_CB(skb)->end_seq;
}
if (tcp_fast_parse_options(skb, th, tp) && tp->saw_tstamp &&
tcp_paws_discard(tp, skb)) {
if (!th->rst) {
- NET_INC_STATS_BH(PAWSEstabRejected);
+ NET_INC_STATS_BH(LINUX_MIB_PAWSESTABREJECTED);
tcp_send_dupack(sk, skb);
goto discard;
}
tcp_replace_ts_recent(tp, TCP_SKB_CB(skb)->seq);
if (th->syn && !before(TCP_SKB_CB(skb)->seq, tp->rcv_nxt)) {
- TCP_INC_STATS_BH(TcpInErrs);
- NET_INC_STATS_BH(TCPAbortOnSyn);
+ TCP_INC_STATS_BH(TCP_MIB_INERRS);
+ NET_INC_STATS_BH(LINUX_MIB_TCPABORTONSYN);
tcp_reset(sk);
return 1;
}
return 0;
csum_error:
- TCP_INC_STATS_BH(TcpInErrs);
+ TCP_INC_STATS_BH(TCP_MIB_INERRS);
discard:
__kfree_skb(skb);
if (tp->saw_tstamp && tp->rcv_tsecr &&
!between(tp->rcv_tsecr, tp->retrans_stamp,
tcp_time_stamp)) {
- NET_INC_STATS_BH(PAWSActiveRejected);
+ NET_INC_STATS_BH(LINUX_MIB_PAWSACTIVEREJECTED);
goto reset_and_undo;
}
sk_wake_async(sk, 0, POLL_OUT);
}
- if (tp->write_pending || tp->defer_accept || tp->ack.pingpong) {
+ if (sk->sk_write_pending || tp->defer_accept || tp->ack.pingpong) {
/* Save one ACK. Data will be ready after
* several ticks, if write_pending is set.
*
return 1;
init_westwood(sk);
+ init_bictcp(tp);
/* Now we have several options: In theory there is
* nothing else in the frame. KA9Q has an option to
case TCP_SYN_SENT:
init_westwood(sk);
+ init_bictcp(tp);
queued = tcp_rcv_synsent_state_process(sk, skb, th, len);
if (queued >= 0)
if (tcp_fast_parse_options(skb, th, tp) && tp->saw_tstamp &&
tcp_paws_discard(tp, skb)) {
if (!th->rst) {
- NET_INC_STATS_BH(PAWSEstabRejected);
+ NET_INC_STATS_BH(LINUX_MIB_PAWSESTABREJECTED);
tcp_send_dupack(sk, skb);
goto discard;
}
* Check for a SYN in window.
*/
if (th->syn && !before(TCP_SKB_CB(skb)->seq, tp->rcv_nxt)) {
- NET_INC_STATS_BH(TCPAbortOnSyn);
+ NET_INC_STATS_BH(LINUX_MIB_TCPABORTONSYN);
tcp_reset(sk);
return 1;
}
(TCP_SKB_CB(skb)->end_seq != TCP_SKB_CB(skb)->seq &&
after(TCP_SKB_CB(skb)->end_seq - th->fin, tp->rcv_nxt))) {
tcp_done(sk);
- NET_INC_STATS_BH(TCPAbortOnData);
+ NET_INC_STATS_BH(LINUX_MIB_TCPABORTONDATA);
return 1;
}
if (sk->sk_shutdown & RCV_SHUTDOWN) {
if (TCP_SKB_CB(skb)->end_seq != TCP_SKB_CB(skb)->seq &&
after(TCP_SKB_CB(skb)->end_seq - th->fin, tp->rcv_nxt)) {
- NET_INC_STATS_BH(TCPAbortOnData);
+ NET_INC_STATS_BH(LINUX_MIB_TCPABORTONDATA);
tcp_reset(sk);
return 1;
}
git://git.onelab.eu / linux-2.6.git / blobdiff