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Add new socket ioctls SIOC[SG]TUNFIB to set FIB number of encapsulated

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packets on tunnel interfaces. Add support of these ioctls to gre(4),
gif(4) and me(4) interfaces. For incoming packets M_SETFIB() should use
if_fib value from ifnet structure, use proper value in gre(4) and me(4).

Differential Revision:	https://reviews.freebsd.org/D2462
No objection from:	#network
MFC after:	2 weeks
Sponsored by:	Yandex LLC
This commit is contained in:
Andrey V. Elsukov 2015-05-12 07:37:27 +00:00
parent 0a23444a57
commit eccfe69a5c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=282809
6 changed files with 78 additions and 12 deletions
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8
sbin/ifconfig/ifconfig.8
View File

@ -316,6 +316,14 @@ using the
kernel configuration option, or the
.Va net.fibs
tunable.
.It Cm tunnelfib Ar fib_number
Specify tunnel FIB.
A FIB
.Ar fib_number
is assigned to all packets encapsulated by tunnel interface, e.g.,
.Xr gif 4
and
.Xr gre 4 .
.It Cm maclabel Ar label
If Mandatory Access Control support is enabled in the kernel,
set the MAC label to

36
sbin/ifconfig/iffib.c
View File

@ -50,15 +50,15 @@ fib_status(int s)
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
if (ioctl(s, SIOCGIFFIB, (caddr_t)&ifr) == 0 &&
ifr.ifr_fib != RT_DEFAULT_FIB)
printf("\tfib: %u\n", ifr.ifr_fib);
if (ioctl(s, SIOCGIFFIB, (caddr_t)&ifr) < 0)
return;
/* Ignore if it is the default. */
if (ifr.ifr_fib == 0)
return;
printf("\tfib: %u\n", ifr.ifr_fib);
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
if (ioctl(s, SIOCGTUNFIB, (caddr_t)&ifr) == 0 &&
ifr.ifr_fib != RT_DEFAULT_FIB)
printf("\ttunnelfib: %u\n", ifr.ifr_fib);
}
static void
@ -80,8 +80,28 @@ setiffib(const char *val, int dummy __unused, int s,
warn("ioctl (SIOCSIFFIB)");
}
static void
settunfib(const char *val, int dummy __unused, int s,
const struct afswtch *afp)
{
unsigned long fib;
char *ep;
fib = strtoul(val, &ep, 0);
if (*ep != '\0' || fib > UINT_MAX) {
warn("fib %s not valid", val);
return;
}
strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
ifr.ifr_fib = fib;
if (ioctl(s, SIOCSTUNFIB, (caddr_t)&ifr) < 0)
warn("ioctl (SIOCSTUNFIB)");
}
static struct cmd fib_cmds[] = {
DEF_CMD_ARG("fib", setiffib),
DEF_CMD_ARG("tunnelfib", settunfib),
};
static struct afswtch af_fib = {

12
sys/net/if_gif.c
View File

@ -920,6 +920,17 @@ gif_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
#endif
}
break;
case SIOCGTUNFIB:
ifr->ifr_fib = sc->gif_fibnum;
break;
case SIOCSTUNFIB:
if ((error = priv_check(curthread, PRIV_NET_GIF)) != 0)
break;
if (ifr->ifr_fib >= rt_numfibs)
error = EINVAL;
else
sc->gif_fibnum = ifr->ifr_fib;
break;
case GIFGOPTS:
options = sc->gif_options;
error = copyout(&options, ifr->ifr_data, sizeof(options));
@ -935,7 +946,6 @@ gif_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
else
sc->gif_options = options;
break;
default:
error = EINVAL;
break;

17
sys/net/if_gre.c
View File

@ -64,6 +64,7 @@ __FBSDID("$FreeBSD$");
#include <net/if_types.h>
#include <net/netisr.h>
#include <net/vnet.h>
#include <net/route.h>
#include <netinet/in.h>
#ifdef INET
@ -441,6 +442,17 @@ gre_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
#endif
}
break;
case SIOCGTUNFIB:
ifr->ifr_fib = sc->gre_fibnum;
break;
case SIOCSTUNFIB:
if ((error = priv_check(curthread, PRIV_NET_GRE)) != 0)
break;
if (ifr->ifr_fib >= rt_numfibs)
error = EINVAL;
else
sc->gre_fibnum = ifr->ifr_fib;
break;
case GRESKEY:
if ((error = priv_check(curthread, PRIV_NET_GRE)) != 0)
break;
@ -454,7 +466,8 @@ gre_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
}
break;
case GREGKEY:
error = copyout(&sc->gre_key, ifr->ifr_data, sizeof(sc->gre_key));
error = copyout(&sc->gre_key, ifr->ifr_data,
sizeof(sc->gre_key));
break;
case GRESOPTS:
if ((error = priv_check(curthread, PRIV_NET_GRE)) != 0)
@ -725,7 +738,7 @@ gre_input(struct mbuf **mp, int *offp, int proto)
m_adj(m, *offp + hlen);
m_clrprotoflags(m);
m->m_pkthdr.rcvif = ifp;
M_SETFIB(m, sc->gre_fibnum);
M_SETFIB(m, ifp->if_fib);
#ifdef MAC
mac_ifnet_create_mbuf(ifp, m);
#endif

14
sys/net/if_me.c
View File

@ -54,6 +54,7 @@ __FBSDID("$FreeBSD$");
#include <net/if_types.h>
#include <net/netisr.h>
#include <net/vnet.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
@ -297,6 +298,17 @@ me_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
if (error != 0)
memset(src, 0, sizeof(*src));
break;
case SIOCGTUNFIB:
ifr->ifr_fib = sc->me_fibnum;
break;
case SIOCSTUNFIB:
if ((error = priv_check(curthread, PRIV_NET_GRE)) != 0)
break;
if (ifr->ifr_fib >= rt_numfibs)
error = EINVAL;
else
sc->me_fibnum = ifr->ifr_fib;
break;
default:
error = EINVAL;
break;
@ -453,7 +465,7 @@ me_input(struct mbuf **mp, int *offp, int proto)
m_clrprotoflags(m);
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.csum_flags |= (CSUM_IP_CHECKED | CSUM_IP_VALID);
M_SETFIB(m, sc->me_fibnum);
M_SETFIB(m, ifp->if_fib);
hlen = AF_INET;
BPF_MTAP2(ifp, &hlen, sizeof(hlen), m);
if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);

3
sys/sys/sockio.h
View File

@ -114,6 +114,9 @@
#define SIOCGIFFIB _IOWR('i', 92, struct ifreq) /* get IF fib */
#define SIOCSIFFIB _IOW('i', 93, struct ifreq) /* set IF fib */
#define SIOCGTUNFIB _IOWR('i', 94, struct ifreq) /* get tunnel fib */
#define SIOCSTUNFIB _IOW('i', 95, struct ifreq) /* set tunnel fib */
#define SIOCSDRVSPEC _IOW('i', 123, struct ifdrv) /* set driver-specific
parameters */
#define SIOCGDRVSPEC _IOWR('i', 123, struct ifdrv) /* get driver-specific