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From: Gleb Smirnoff <glebius@FreeBSD.org>
Date: Tue, 2 Oct 2012 12:57:48 +0000 (UTC)
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Subject: svn commit: r241132 - stable/9/sys/netinet
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Author: glebius
Date: Tue Oct  2 12:57:47 2012
New Revision: 241132
URL: http://svn.freebsd.org/changeset/base/241132

Log:
  Merge r240985 from head:
    Fix bug in TCP_KEEPCNT setting, which slipped in in the last round
    of reviewing of r231025.
  
    Unlike other options from this family TCP_KEEPCNT doesn't specify
    time interval, but a count, thus parameter supplied doesn't need
    to be multiplied by hz.
  
    Reported & tested by:	amdmi3

Modified:
  stable/9/sys/netinet/tcp_usrreq.c
Directory Properties:
  stable/9/sys/   (props changed)

Modified: stable/9/sys/netinet/tcp_usrreq.c
==============================================================================
--- stable/9/sys/netinet/tcp_usrreq.c	Tue Oct  2 12:44:46 2012	(r241131)
+++ stable/9/sys/netinet/tcp_usrreq.c	Tue Oct  2 12:57:47 2012	(r241132)
@@ -1443,7 +1443,6 @@ tcp_ctloutput(struct socket *so, struct 
 
 		case TCP_KEEPIDLE:
 		case TCP_KEEPINTVL:
-		case TCP_KEEPCNT:
 		case TCP_KEEPINIT:
 			INP_WUNLOCK(inp);
 			error = sooptcopyin(sopt, &ui, sizeof(ui), sizeof(ui));
@@ -1476,13 +1475,6 @@ tcp_ctloutput(struct socket *so, struct 
 					tcp_timer_activate(tp, TT_2MSL,
 					    TP_MAXIDLE(tp));
 				break;
-			case TCP_KEEPCNT:
-				tp->t_keepcnt = ui;
-				if ((tp->t_state == TCPS_FIN_WAIT_2) &&
-				    (TP_MAXIDLE(tp) > 0))
-					tcp_timer_activate(tp, TT_2MSL,
-					    TP_MAXIDLE(tp));
-				break;
 			case TCP_KEEPINIT:
 				tp->t_keepinit = ui;
 				if (tp->t_state == TCPS_SYN_RECEIVED ||
@@ -1494,6 +1486,21 @@ tcp_ctloutput(struct socket *so, struct 
 			INP_WUNLOCK(inp);
 			break;
 
+		case TCP_KEEPCNT:
+			INP_WUNLOCK(inp);
+			error = sooptcopyin(sopt, &ui, sizeof(ui), sizeof(ui));
+			if (error)
+				return (error);
+
+			INP_WLOCK_RECHECK(inp);
+			tp->t_keepcnt = ui;
+			if ((tp->t_state == TCPS_FIN_WAIT_2) &&
+			    (TP_MAXIDLE(tp) > 0))
+				tcp_timer_activate(tp, TT_2MSL,
+				    TP_MAXIDLE(tp));
+			INP_WUNLOCK(inp);
+			break;
+
 		default:
 			INP_WUNLOCK(inp);
 			error = ENOPROTOOPT;