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Index: sys/compat/linsysfs/linsysfs.c
===================================================================
--- sys/compat/linsysfs/linsysfs.c
+++ sys/compat/linsysfs/linsysfs.c
@@ -2,6 +2,7 @@
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2006 IronPort Systems
+ * Copyright (c) 2017 Carlos Neira cneirabustos@gmail.com
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -53,7 +54,12 @@
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
+#include <sys/ctype.h>
#include <net/if.h>
+#include <net/if_types.h>
+#include <net/if_var.h>
+#include <net/if_dl.h>
+#include <net/vnet.h>
#include <vm/vm.h>
#include <vm/pmap.h>
@@ -68,6 +74,9 @@
#include <compat/linux/linux_mib.h>
#include <compat/linux/linux_util.h>
#include <fs/pseudofs/pseudofs.h>
+#include <sys/jail.h>
+
+#define LINUX_IFNAMSIZ 16
struct scsi_host_queue {
TAILQ_ENTRY(scsi_host_queue) scsi_host_next;
@@ -85,6 +94,201 @@
return (int)strtol(str, (char **)NULL, 10);
}
+/*
+* Filler function for sys/class/net/<iface>
+* Only 2 interfaces are created eth0 and lo and they expose the following files
+* address, addr_len, flags, ifindex, mty, tx_queue_len and type.
+*/
+#define ETHERADDRL 6
+#define IFP_IS_ETH(ifp) (ifp->if_type == IFT_ETHER)
+
+static struct ifnet *
+ifname_linux_to_bsd(struct thread *td, const char *lxname, char *bsdname)
+{
+ struct ifnet *ifp;
+ int len, unit;
+ char *ep;
+ int is_eth, index;
+
+ for (len = 0; len < LINUX_IFNAMSIZ; ++len)
+ if (!isalpha(lxname[len]))
+ break;
+ if (len == 0 || len == LINUX_IFNAMSIZ)
+ return (NULL);
+ unit = (int)strtoul(lxname + len, &ep, 10);
+ if (ep == NULL || ep == lxname + len || ep >= lxname + LINUX_IFNAMSIZ)
+ return (NULL);
+ index = 0;
+ is_eth = (len == 3 && !strncmp(lxname, "eth", len)) ? 1 : 0;
+ CURVNET_SET(TD_TO_VNET(td));
+ IFNET_RLOCK();
+ CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
+ /*
+ * Allow Linux programs to use FreeBSD names. Don't presume
+ * we never have an interface named "eth", so don't make
+ * the test optional based on is_eth.
+ */
+ if (strncmp(ifp->if_xname, lxname, LINUX_IFNAMSIZ) == 0)
+ break;
+ if (is_eth && IFP_IS_ETH(ifp) && unit == index++)
+ break;
+ }
+ IFNET_RUNLOCK();
+ CURVNET_RESTORE();
+ if (ifp != NULL)
+ strlcpy(bsdname, ifp->if_xname, IFNAMSIZ);
+
+ return (ifp);
+}
+
+static int
+linsysfs_ifnet_addr(PFS_FILL_ARGS) {
+ struct ifnet* ifp;
+ char bsdname[IFNAMSIZ+1];
+ uint8_t* address;
+ if (!memcmp((const char*)pn->pn_parent->pn_name, "lo", 2)) {
+ sbuf_printf (sb, "00:00:00:00:00:00\n");
+ return (0);
+ } else {
+ ifp = ifname_linux_to_bsd(curthread,
+ (const char*)pn->pn_parent->pn_name,
+ bsdname);
+ if (!ifp) {
+ sbuf_printf (sb, "00:00:00:00:00:00\n");
+ return (0);
+ }
+ address = IF_LLADDR(ifp);
+ sbuf_printf (sb, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx\n",
+ address[0], address[1], address[2],
+ address[3], address[4], address[5]);
+ return (0);
+ }
+}
+
+static int
+linsysfs_ifnet_addrlen(PFS_FILL_ARGS) {
+ sbuf_printf(sb, "6\n");
+ return (0);
+}
+
+static int
+linsysfs_ifnet_flags(PFS_FILL_ARGS) {
+ int buf;
+ struct ifnet* ifp;
+ char bsdname[IFNAMSIZ+1];
+ if (!memcmp((const char*)pn->pn_parent->pn_name, "eth", 3)) {
+ ifp = ifname_linux_to_bsd(curthread,
+ (const char*)pn->pn_parent->pn_name,
+ bsdname);
+ buf = ifp->if_flags & (IFF_UP | IFF_BROADCAST | IFF_DEBUG |
+ IFF_LOOPBACK | IFF_POINTOPOINT |
+ IFF_DRV_RUNNING | IFF_NOARP |
+ IFF_PROMISC | IFF_ALLMULTI);
+ buf |= 0x1000;
+ sbuf_printf(sb, "0x%x\n", buf);
+ } else {
+ sbuf_printf(sb, "0x9\n");
+ }
+ return (0);
+}
+
+static int
+linsysfs_ifnet_ifindex(PFS_FILL_ARGS) {
+ struct ifnet* ifp;
+ char bsdname[IFNAMSIZ+1];
+ if (!memcmp((const char*)pn->pn_parent->pn_name, "eth", 3)) {
+ ifp = ifname_linux_to_bsd(curthread,
+ (const char*)pn->pn_parent->pn_name, bsdname);
+ sbuf_printf(sb, "%u\n", ifp->if_index);
+ } else {
+ sbuf_printf(sb, "1\n");
+ }
+ return (0);
+}
+
+static int
+linsysfs_ifnet_mtu(PFS_FILL_ARGS) {
+ struct ifnet* ifp;
+ char bsdname[IFNAMSIZ+1];
+ if (!memcmp((const char*)pn->pn_parent->pn_name, "lo", 2)) {
+ sbuf_printf(sb, "65536\n");
+ } else {
+ ifp = ifname_linux_to_bsd(curthread,
+ (const char*)pn->pn_parent->pn_name,
+ bsdname);
+ sbuf_printf(sb, "%u\n", ifp->if_mtu);
+ }
+ return (0);
+}
+
+static int
+linsysfs_ifnet_tx_queue_len(PFS_FILL_ARGS) {
+ sbuf_printf(sb, "1000\n");
+ return (0);
+}
+
+static int
+linsysfs_ifnet_type(PFS_FILL_ARGS) {
+ if (!memcmp((const char*)pn->pn_parent->pn_name, "lo", 2))
+ sbuf_printf(sb, "772\n");
+ else
+ sbuf_printf(sb, "2\n");
+ return (0);
+}
+
+static void
+linsysfs_listnics(struct pfs_node *dir)
+{
+ struct pfs_node *nic;
+ struct pfs_node *lo;
+
+ nic = pfs_create_dir (dir, "eth0", NULL, NULL, NULL, 0);
+
+ pfs_create_file(nic, "address", &linsysfs_ifnet_addr,
+ NULL, NULL, NULL, PFS_RD);
+
+ pfs_create_file(nic, "addr_len", &linsysfs_ifnet_addrlen,
+ NULL, NULL, NULL, PFS_RD);
+
+ pfs_create_file(nic, "flags", &linsysfs_ifnet_flags,
+ NULL, NULL, NULL, PFS_RD);
+
+ pfs_create_file(nic, "ifindex", &linsysfs_ifnet_ifindex,
+ NULL, NULL, NULL, PFS_RD);
+
+ pfs_create_file(nic, "mtu", &linsysfs_ifnet_mtu,
+ NULL, NULL, NULL, PFS_RD);
+
+ pfs_create_file(nic, "tx_queue_len", &linsysfs_ifnet_tx_queue_len,
+ NULL, NULL, NULL, PFS_RD);
+
+ pfs_create_file(nic, "type", &linsysfs_ifnet_type,
+ NULL, NULL, NULL, PFS_RD);
+
+ lo = pfs_create_dir(dir, "lo", NULL, NULL, NULL, 0);
+
+ pfs_create_file(lo, "address", &linsysfs_ifnet_addr,
+ NULL, NULL, NULL, PFS_RD);
+
+ pfs_create_file (lo, "addr_len", &linsysfs_ifnet_addrlen,
+ NULL, NULL, NULL, PFS_RD);
+
+ pfs_create_file (lo, "flags", &linsysfs_ifnet_flags,
+ NULL, NULL, NULL, PFS_RD);
+
+ pfs_create_file (lo, "ifindex", &linsysfs_ifnet_ifindex,
+ NULL, NULL, NULL, PFS_RD);
+
+ pfs_create_file (lo, "mtu", &linsysfs_ifnet_mtu,
+ NULL, NULL, NULL, PFS_RD);
+
+ pfs_create_file(lo, "tx_queue_len", &linsysfs_ifnet_tx_queue_len,
+ NULL, NULL, NULL, PFS_RD);
+
+ pfs_create_file(lo, "type", &linsysfs_ifnet_type,
+ NULL, NULL, NULL, PFS_RD);
+}
+
/*
* Filler function for proc_name
*/
@@ -496,6 +700,7 @@
struct pfs_node *drm;
struct pfs_node *pci;
struct pfs_node *scsi;
+ struct pfs_node *net;
struct pfs_node *devdir, *chardev;
devclass_t devclass;
device_t dev;
@@ -509,6 +714,9 @@
scsi = pfs_create_dir(class, "scsi_host", NULL, NULL, NULL, 0);
drm = pfs_create_dir(class, "drm", NULL, NULL, NULL, 0);
+ /* /sys/class/net/.. */
+ net = pfs_create_dir(class, "net", NULL, NULL, NULL, 0);
+
/* /sys/dev/... */
devdir = pfs_create_dir(root, "dev", NULL, NULL, NULL, 0);
chardev = pfs_create_dir(devdir, "char", NULL, NULL, NULL, 0);
@@ -535,6 +743,7 @@
NULL, NULL, NULL, PFS_RD);
linsysfs_listcpus(cpu);
+ linsysfs_listnics(net);
return (0);
}

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