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linprocfs: Add net/route.

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PR:			266482
Reviewed by:		melifaro, me
Differential revision:	https://reviews.freebsd.org/D36949
MFC after:		1 week
This commit is contained in:
John Grafton 2022-10-22 13:52:58 +03:00 committed by Dmitry Chagin
parent b7761f1f08
commit 4c9db9566e
2 changed files with 80 additions and 1 deletions
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79
sys/compat/linprocfs/linprocfs.c
View File

@ -41,6 +41,8 @@
* @(#)procfs_status.c 8.4 (Berkeley) 6/15/94
*/
#include "opt_inet.h"
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
@ -86,6 +88,10 @@ __FBSDID("$FreeBSD$");
#include <net/if_var.h>
#include <net/if_types.h>
#include <net/route.h>
#include <net/route/nhop.h>
#include <net/route/route_ctl.h>
#include <vm/vm.h>
#include <vm/vm_extern.h>
#include <vm/pmap.h>
@ -1546,6 +1552,77 @@ linprocfs_donetdev(PFS_FILL_ARGS)
return (0);
}
struct walkarg {
struct sbuf *sb;
};
static int
linux_route_print(struct rtentry *rt, void *vw)
{
#ifdef INET
struct walkarg *w = vw;
struct route_nhop_data rnd;
struct in_addr dst, mask;
struct nhop_object *nh;
char ifname[16];
uint32_t scopeid = 0;
uint32_t gw = 0;
uint32_t linux_flags = 0;
rt_get_inet_prefix_pmask(rt, &dst, &mask, &scopeid);
rt_get_rnd(rt, &rnd);
/* select only first route in case of multipath */
nh = nhop_select_func(rnd.rnd_nhop, 0);
linux_ifname(nh->nh_ifp, ifname, sizeof(ifname));
gw = (nh->nh_flags & NHF_GATEWAY)
? nh->gw4_sa.sin_addr.s_addr : 0;
linux_flags = RTF_UP |
(nhop_get_rtflags(nh) & (RTF_GATEWAY | RTF_HOST));
sbuf_printf(w->sb,
"%s\t"
"%08X\t%08X\t%04X\t"
"%d\t%u\t%d\t"
"%08X\t%d\t%u\t%u",
ifname,
dst.s_addr, gw, linux_flags,
0, 0, rnd.rnd_weight,
mask.s_addr, nh->nh_mtu, 0, 0);
sbuf_printf(w->sb, "\n\n");
#endif
return (0);
}
/*
* Filler function for proc/net/route
*/
static int
linprocfs_donetroute(PFS_FILL_ARGS)
{
struct walkarg w = {
.sb = sb
};
uint32_t fibnum = curthread->td_proc->p_fibnum;
sbuf_printf(w.sb, "%-127s\n", "Iface\tDestination\tGateway "
"\tFlags\tRefCnt\tUse\tMetric\tMask\t\tMTU"
"\tWindow\tIRTT");
CURVNET_SET(TD_TO_VNET(curthread));
IFNET_RLOCK();
rib_walk(fibnum, AF_INET, false, linux_route_print, &w);
IFNET_RUNLOCK();
CURVNET_RESTORE();
return (0);
}
/*
* Filler function for proc/sys/kernel/osrelease
*/
@ -2100,6 +2177,8 @@ linprocfs_init(PFS_INIT_ARGS)
dir = pfs_create_dir(root, "net", NULL, NULL, NULL, 0);
pfs_create_file(dir, "dev", &linprocfs_donetdev,
NULL, NULL, NULL, PFS_RD);
pfs_create_file(dir, "route", &linprocfs_donetroute,
NULL, NULL, NULL, PFS_RD);
/* /proc/<pid>/... */
dir = pfs_create_dir(root, "pid", NULL, NULL, NULL, PFS_PROCDEP);

2
sys/modules/linprocfs/Makefile
View File

@ -4,7 +4,7 @@
KMOD= linprocfs
SRCS= vnode_if.h \
device_if.h bus_if.h \
device_if.h bus_if.h opt_inet.h \
linprocfs.c
.if !defined(KERNBUILDDIR)