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Added ioctl support for SIOCGIFMTU and SIOCSIFMTU. These set the per-

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interface MTU.
This commit is contained in:
David Greenman 1994-08-08 10:49:26 +00:00
parent 4db32b036d
commit a7028af7f0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=1941
3 changed files with 18 additions and 3 deletions
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13
sys/net/if.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)if.c 8.3 (Berkeley) 1/4/94
* $Id$
* $Id: if.c,v 1.2 1994/08/02 07:46:05 davidg Exp $
*/
#include <sys/param.h>
@ -486,6 +486,10 @@ ifioctl(so, cmd, data, p)
ifr->ifr_metric = ifp->if_metric;
break;
case SIOCGIFMTU:
ifr->ifr_mtu = ifp->if_mtu;
break;
case SIOCSIFFLAGS:
if (error = suser(p->p_ucred, &p->p_acflag))
return (error);
@ -511,6 +515,13 @@ ifioctl(so, cmd, data, p)
ifp->if_metric = ifr->ifr_metric;
break;
case SIOCSIFMTU:
if (error = suser(p->p_ucred, &p->p_acflag))
return (error);
if (ifp->if_ioctl == NULL)
return (EOPNOTSUPP);
return ((*ifp->if_ioctl)(ifp, cmd, data));
case SIOCADDMULTI:
case SIOCDELMULTI:
if (error = suser(p->p_ucred, &p->p_acflag))

4
sys/net/if.h
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)if.h 8.1 (Berkeley) 6/10/93
* $Id$
* $Id: if.h,v 1.3 1994/08/02 07:46:07 davidg Exp $
*/
/*
@ -282,6 +282,7 @@ struct ifreq {
struct sockaddr ifru_broadaddr;
short ifru_flags;
int ifru_metric;
int ifru_mtu;
caddr_t ifru_data;
} ifr_ifru;
#define ifr_addr ifr_ifru.ifru_addr /* address */
@ -289,6 +290,7 @@ struct ifreq {
#define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
#define ifr_flags ifr_ifru.ifru_flags /* flags */
#define ifr_metric ifr_ifru.ifru_metric /* metric */
#define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
#define ifr_data ifr_ifru.ifru_data /* for use by interface */
};

4
sys/sys/sockio.h
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)sockio.h 8.1 (Berkeley) 3/28/94
* $Id$
* $Id: sockio.h,v 1.2 1994/08/02 07:53:37 davidg Exp $
*/
#ifndef _SYS_SOCKIO_H_
@ -74,5 +74,7 @@
#define SIOCADDMULTI _IOW('i', 49, struct ifreq) /* add m'cast addr */
#define SIOCDELMULTI _IOW('i', 50, struct ifreq) /* del m'cast addr */
#define SIOCGIFMTU _IOWR('i', 51, struct ifreq) /* get IF mtu */
#define SIOCSIFMTU _IOW('i', 52, struct ifreq) /* set IF mtu */
#endif /* !_SYS_SOCKIO_H_ */