? tcpbench.d
Index: tcpbench.c
===================================================================
RCS file: /cvs/src/usr.bin/tcpbench/tcpbench.c,v
retrieving revision 1.65
diff -u -p -r1.65 tcpbench.c
--- tcpbench.c	12 Jul 2021 15:09:20 -0000	1.65
+++ tcpbench.c	20 May 2022 13:19:01 -0000
@@ -55,6 +55,8 @@
 #include <kvm.h>
 #include <nlist.h>
 
+#define pledge(_list, _exec) (0)
+
 #define DEFAULT_PORT "12345"
 #define DEFAULT_STATS_INTERVAL 1000 /* ms */
 #define DEFAULT_BUF (256 * 1024)
@@ -65,6 +67,7 @@
 
 /* Our tcpbench globals */
 struct {
+	int	  iflag;	/* TCP_INFO */
 	int	  Dflag;	/* Socket debug */
 	int	  Sflag;	/* Socket buffer size */
 	u_int	  rflag;	/* Report rate (ms) */
@@ -605,6 +608,8 @@ tcp_process_slice(int fd, short event, v
 	struct inpcb inpcb;
 	struct tcpcb tcpcb;
 	struct socket sockb;
+	struct tcp_info tcpi;
+	socklen_t tcpilen;
 
 	if (TAILQ_EMPTY(&sc_queue))
 		return; /* don't pollute stats */
@@ -617,6 +622,23 @@ tcp_process_slice(int fd, short event, v
 		if (ptb->kvars != NULL) /* process kernel stats */
 			kupdate_stats(sc->tcp_tcbaddr, &inpcb, &tcpcb,
 			    &sockb);
+		if (ptb->iflag) {
+			tcpilen = sizeof(tcpi);
+			if (getsockopt(sc->fd, IPPROTO_TCP, TCP_INFO,
+			    &tcpi, &tcpilen) == -1)
+				err(1, "get tcp_info");
+
+			printf("tcpi rtt %u rttvar %u\n",
+			    tcpi.tcpi_rtt, tcpi.tcpi_rttvar);
+			printf("tcpi snd mss %u rcv mss %u\n",
+			    tcpi.tcpi_snd_mss, tcpi.tcpi_rcv_mss);
+			printf("tcpi snd mss %u rcv space %u\n",
+			    tcpi.tcpi_snd_mss, tcpi.tcpi_rcv_space);
+			printf("tcpi tcpi_rcv_ooopack %u\n",
+			    tcpi.tcpi_rcv_ooopack);
+			printf("tcpi tcpi_snd_zerowin %u\n",
+			    tcpi.tcpi_snd_zerowin);
+		}
 
 		timersub(&t_cur, &sc->t_start, &t_diff);
 		total_elapsed = t_diff.tv_sec * 1000 + t_diff.tv_usec / 1000;
@@ -1159,7 +1181,7 @@ main(int argc, char **argv)
 	aib = NULL;
 	secs = 0;
 
-	while ((ch = getopt(argc, argv, "46b:B:Dhlk:n:p:Rr:sS:t:T:uUvV:"))
+	while ((ch = getopt(argc, argv, "46b:B:Dhilk:n:p:Rr:sS:t:T:uUvV:"))
 	    != -1) {
 		switch (ch) {
 		case '4':
@@ -1174,6 +1196,9 @@ main(int argc, char **argv)
 		case 'D':
 			ptb->Dflag = 1;
 			break;
+		case 'i':
+			ptb->iflag = 1;
+			break;
 		case 'l':
 			list_kvars();
 			exit(0);
@@ -1411,7 +1436,7 @@ main(int argc, char **argv)
 		}
 		client_init(aitop, nconn, aib);
 
-		if (pledge("stdio", NULL) == -1)
+		if (pledge("stdio inet", NULL) == -1)
 			err(1, "pledge");
 	}