Module Name: src
Committed By: kefren
Date: Mon Dec 2 09:39:54 UTC 2013
Modified Files:
src/sys/netinet: tcp_usrreq.c
Log Message:
Update TCP CB with new values on rfc1323 and mssdflt sysctl updates
>From [email protected] in kern/44254
To generate a diff of this commit:
cvs rdiff -u -r1.169 -r1.170 src/sys/netinet/tcp_usrreq.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/netinet/tcp_usrreq.c
diff -u src/sys/netinet/tcp_usrreq.c:1.169 src/sys/netinet/tcp_usrreq.c:1.170
--- src/sys/netinet/tcp_usrreq.c:1.169 Sat Nov 23 14:20:21 2013
+++ src/sys/netinet/tcp_usrreq.c Mon Dec 2 09:39:54 2013
@@ -1,4 +1,4 @@
-/* $NetBSD: tcp_usrreq.c,v 1.169 2013/11/23 14:20:21 christos Exp $ */
+/* $NetBSD: tcp_usrreq.c,v 1.170 2013/12/02 09:39:54 kefren Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -95,7 +95,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tcp_usrreq.c,v 1.169 2013/11/23 14:20:21 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tcp_usrreq.c,v 1.170 2013/12/02 09:39:54 kefren Exp $");
#include "opt_inet.h"
#include "opt_ipsec.h"
@@ -1044,10 +1044,43 @@ sysctl_net_inet_tcp_mssdflt(SYSCTLFN_ARG
return (EINVAL);
tcp_mssdflt = mssdflt;
+ mutex_enter(softnet_lock);
+ tcp_tcpcb_template();
+ mutex_exit(softnet_lock);
+
return (0);
}
/*
+ * sysctl helper for TCP CB template update
+ */
+static int
+sysctl_update_tcpcb_template(SYSCTLFN_ARGS)
+{
+ int t, error;
+ struct sysctlnode node;
+
+ /* follow procedures in sysctl(9) manpage */
+ t = *(int *)rnode->sysctl_data;
+ node = *rnode;
+ node.sysctl_data = &t;
+ error = sysctl_lookup(SYSCTLFN_CALL(&node));
+ if (error || newp == NULL)
+ return error;
+
+ if (t < 0)
+ return EINVAL;
+
+ *(int *)rnode->sysctl_data = t;
+
+ mutex_enter(softnet_lock);
+ tcp_tcpcb_template();
+ mutex_exit(softnet_lock);
+
+ return 0;
+}
+
+/*
* sysctl helper routine for setting port related values under
* net.inet.ip and net.inet6.ip6. does basic range checking and does
* additional checks for each type. this code has placed in
@@ -1686,7 +1719,7 @@ sysctl_net_inet_tcp_setup2(struct sysctl
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "rfc1323",
SYSCTL_DESCR("Enable RFC1323 TCP extensions"),
- NULL, 0, &tcp_do_rfc1323, 0,
+ sysctl_update_tcpcb_template, 0, &tcp_do_rfc1323, 0,
CTL_NET, pf, IPPROTO_TCP, TCPCTL_RFC1323, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
@@ -1786,13 +1819,13 @@ sysctl_net_inet_tcp_setup2(struct sysctl
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "win_scale",
SYSCTL_DESCR("Use RFC1323 window scale options"),
- NULL, 0, &tcp_do_win_scale, 0,
+ sysctl_update_tcpcb_template, 0, &tcp_do_win_scale, 0,
CTL_NET, pf, IPPROTO_TCP, TCPCTL_WSCALE, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "timestamps",
SYSCTL_DESCR("Use RFC1323 time stamp options"),
- NULL, 0, &tcp_do_timestamps, 0,
+ sysctl_update_tcpcb_template, 0, &tcp_do_timestamps, 0,
CTL_NET, pf, IPPROTO_TCP, TCPCTL_TSTAMP, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
