* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
- * @(#)tcp_output.c 7.2 (Berkeley) %G%
+ * @(#)tcp_output.c 7.3 (Berkeley) %G%
*/
#include "param.h"
m->m_off = MMAXOFF - sizeof (struct tcpiphdr);
m->m_len = sizeof (struct tcpiphdr);
if (len) {
+ if (tp->t_force && len == 1)
+ tcpstat.tcps_sndprobe++;
+ else if (SEQ_LT(tp->snd_nxt, tp->snd_max)) {
+ tcpstat.tcps_sndrexmitpack++;
+ tcpstat.tcps_sndrexmitbyte += len;
+ } else {
+ tcpstat.tcps_sndpack++;
+ tcpstat.tcps_sndbyte += len;
+ }
m->m_next = m_copy(so->so_snd.sb_mb, off, len);
if (m->m_next == 0)
len = 0;
- }
+ } else if (tp->t_flags & TF_ACKNOW)
+ tcpstat.tcps_sndacks++;
+ else if (flags & (TH_SYN|TH_FIN|TH_RST))
+ tcpstat.tcps_sndctrl++;
+ else if (SEQ_GT(tp->snd_up, tp->snd_una))
+ tcpstat.tcps_sndurg++;
+ else
+ tcpstat.tcps_sndwinup++;
+
ti = mtod(m, struct tcpiphdr *);
if (tp->t_template == 0)
panic("tcp_output");
if (tp->t_rtt == 0) {
tp->t_rtt = 1;
tp->t_rtseq = tp->snd_nxt - len;
+ tcpstat.tcps_segstimed++;
}
}
so->so_options & SO_DONTROUTE);
if (error)
return (error);
+ tcpstat.tcps_sndtotal++;
/*
* Data sent (as far as we can tell).
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
- * @(#)tcp_var.h 7.1 (Berkeley) %G%
+ * @(#)tcp_var.h 7.2 (Berkeley) %G%
*/
/*
#define intotcpcb(ip) ((struct tcpcb *)(ip)->inp_ppcb)
#define sototcpcb(so) (intotcpcb(sotoinpcb(so)))
+/*
+ * TCP statistics.
+ * Many of these should be kept per connection,
+ * but that's inconvenient at the moment.
+ */
struct tcpstat {
- int tcps_badsum;
- int tcps_badoff;
- int tcps_hdrops;
- int tcps_badsegs;
- int tcps_unack;
+ u_long tcps_connattempt; /* connections initiated */
+ u_long tcps_accepts; /* connections accepted */
+ u_long tcps_connects; /* connections established */
+ u_long tcps_drops; /* connections dropped */
+ u_long tcps_conndrops; /* embryonic connections dropped */
+ u_long tcps_closed; /* conn. closed (includes drops) */
+ u_long tcps_segstimed; /* segs where we tried to get rtt */
+ u_long tcps_rttupdated; /* times we succeeded */
+ u_long tcps_delack; /* delayed acks sent */
+ u_long tcps_timeoutdrop; /* conn. dropped in rxmt timeout */
+ u_long tcps_rexmttimeo; /* retransmit timeouts */
+ u_long tcps_persisttimeo; /* persist timeouts */
+ u_long tcps_keeptimeo; /* keepalive timeouts */
+ u_long tcps_keepprobe; /* keepalive probes sent */
+ u_long tcps_keepdrops; /* connections dropped in keepalive */
+
+ u_long tcps_sndtotal; /* total packets sent */
+ u_long tcps_sndpack; /* data packets sent */
+ u_long tcps_sndbyte; /* data bytes sent */
+ u_long tcps_sndrexmitpack; /* data packets retransmitted */
+ u_long tcps_sndrexmitbyte; /* data bytes retransmitted */
+ u_long tcps_sndacks; /* ack-only packets sent */
+ u_long tcps_sndprobe; /* window probes sent */
+ u_long tcps_sndurg; /* packets sent with URG only */
+ u_long tcps_sndwinup; /* window update-only packets sent */
+ u_long tcps_sndctrl; /* control (SYN|FIN|RST) packets sent */
+
+ u_long tcps_rcvtotal; /* total packets received */
+ u_long tcps_rcvpack; /* packets received in sequence */
+ u_long tcps_rcvbyte; /* bytes received in sequence */
+ u_long tcps_rcvbadsum; /* packets received with ccksum errs */
+ u_long tcps_rcvbadoff; /* packets received with bad offset */
+ u_long tcps_rcvshort; /* packets received too short */
+ u_long tcps_rcvduppack; /* duplicate-only packets received */
+ u_long tcps_rcvdupbyte; /* duplicate-only bytes received */
+ u_long tcps_rcvpartduppack; /* packets with some duplicate data */
+ u_long tcps_rcvpartdupbyte; /* dup. bytes in part-dup. packets */
+ u_long tcps_rcvoopack; /* out-of-order packets received */
+ u_long tcps_rcvoobyte; /* out-of-order bytes received */
+ u_long tcps_rcvpackafterwin; /* packets with data after window */
+ u_long tcps_rcvbyteafterwin; /* bytes rcvd after window */
+ u_long tcps_rcvafterclose; /* packets rcvd after "close" */
+ u_long tcps_rcvwinprobe; /* rcvd window probe packets */
+ u_long tcps_rcvdupack; /* rcvd duplicate acks */
+ u_long tcps_rcvacktoomuch; /* rcvd acks for unsent data */
+ u_long tcps_rcvackpack; /* rcvd ack packets */
+ u_long tcps_rcvackbyte; /* bytes acked by rcvd acks */
+ u_long tcps_rcvwinupd; /* rcvd window update packets */
};
#ifdef KERNEL