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Differential D21798 Diff 65103 head/sys/netinet/tcp_input.c

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head/sys/netinet/tcp_input.c

Show First 20 Lines • Show All 144 Lines • ▼ Show 20 LinesSYSCTL_INT(_net_inet_tcp, OID_AUTO, delayed_ack, CTLFLAG_VNET | CTLFLAG_RW,
&VNET_NAME(tcp_delack_enabled), 0, &VNET_NAME(tcp_delack_enabled), 0,
"Delay ACK to try and piggyback it onto a data packet"); "Delay ACK to try and piggyback it onto a data packet");
VNET_DEFINE(int, drop_synfin) = 0; VNET_DEFINE(int, drop_synfin) = 0;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, drop_synfin, CTLFLAG_VNET | CTLFLAG_RW, SYSCTL_INT(_net_inet_tcp, OID_AUTO, drop_synfin, CTLFLAG_VNET | CTLFLAG_RW,
&VNET_NAME(drop_synfin), 0, &VNET_NAME(drop_synfin), 0,
"Drop TCP packets with SYN+FIN set"); "Drop TCP packets with SYN+FIN set");
VNET_DEFINE(int, tcp_do_newcwv) = 0;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, newcwv, CTLFLAG_VNET | CTLFLAG_RW,
&VNET_NAME(tcp_do_newcwv), 0,
"Enable New Congestion Window Validation per RFC7661");
VNET_DEFINE(int, tcp_do_rfc6675_pipe) = 0; VNET_DEFINE(int, tcp_do_rfc6675_pipe) = 0;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, rfc6675_pipe, CTLFLAG_VNET | CTLFLAG_RW, SYSCTL_INT(_net_inet_tcp, OID_AUTO, rfc6675_pipe, CTLFLAG_VNET | CTLFLAG_RW,
&VNET_NAME(tcp_do_rfc6675_pipe), 0, &VNET_NAME(tcp_do_rfc6675_pipe), 0,
"Use calculated pipe/in-flight bytes per RFC 6675"); "Use calculated pipe/in-flight bytes per RFC 6675");
VNET_DEFINE(int, tcp_do_rfc3042) = 1; VNET_DEFINE(int, tcp_do_rfc3042) = 1;
SYSCTL_INT(_net_inet_tcp, OID_AUTO, rfc3042, CTLFLAG_VNET | CTLFLAG_RW, SYSCTL_INT(_net_inet_tcp, OID_AUTO, rfc3042, CTLFLAG_VNET | CTLFLAG_RW,
&VNET_NAME(tcp_do_rfc3042), 0, &VNET_NAME(tcp_do_rfc3042), 0,
▲ Show 20 Lines • Show All 131 Lines • ▼ Show 20 Lines
void void
cc_ack_received(struct tcpcb *tp, struct tcphdr *th, uint16_t nsegs, cc_ack_received(struct tcpcb *tp, struct tcphdr *th, uint16_t nsegs,
uint16_t type) uint16_t type)
{ {
INP_WLOCK_ASSERT(tp->t_inpcb); INP_WLOCK_ASSERT(tp->t_inpcb);
tp->ccv->nsegs = nsegs; tp->ccv->nsegs = nsegs;
tp->ccv->bytes_this_ack = BYTES_THIS_ACK(tp, th); tp->ccv->bytes_this_ack = BYTES_THIS_ACK(tp, th);
if (tp->snd_cwnd <= tp->snd_wnd) if ((!V_tcp_do_newcwv && (tp->snd_cwnd <= tp->snd_wnd)) ||
(V_tcp_do_newcwv && (tp->snd_cwnd <= tp->snd_wnd) &&
(tp->snd_cwnd < (tcp_compute_pipe(tp) * 2))))
tp->ccv->flags |= CCF_CWND_LIMITED; tp->ccv->flags |= CCF_CWND_LIMITED;
else else
tp->ccv->flags &= ~CCF_CWND_LIMITED; tp->ccv->flags &= ~CCF_CWND_LIMITED;
if (type == CC_ACK) { if (type == CC_ACK) {
if (tp->snd_cwnd > tp->snd_ssthresh) { if (tp->snd_cwnd > tp->snd_ssthresh) {
tp->t_bytes_acked += min(tp->ccv->bytes_this_ack, tp->t_bytes_acked += min(tp->ccv->bytes_this_ack,
nsegs * V_tcp_abc_l_var * tcp_maxseg(tp)); nsegs * V_tcp_abc_l_var * tcp_maxseg(tp));
▲ Show 20 Lines • Show All 3,472 Lines • Show Last 20 Lines