Date: Thu, 12 Oct 2017 15:11:35 -0600 From: carlos antonio neira bustos <cneirabustos@gmail.com> To: freebsd-emulation@freebsd.org Subject: linsysfs update Message-ID: <CACiB22gPQ-x9M97J4N7usTao=zDeHzJ6mqsW==p9UgvontLwAg@mail.gmail.com>
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I'm sorry here are the diffs to add /sys/class/net to linsysfs
I'm sorry
Here is the diff to add /sys/class/net to linsysfs
--- linsysfs.c.orig 2017-10-12 20:49:52.609822000 -0300
+++ linsysfs.c.dev 2017-10-12 20:49:01.474159000 -0300
@@ -1,5 +1,6 @@
/*-
* 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
@@ -51,7 +52,13 @@
#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>
@@ -67,6 +74,7 @@
#include <compat/linux/linux_util.h>
#include <fs/pseudofs/pseudofs.h>
+
struct scsi_host_queue {
TAILQ_ENTRY(scsi_host_queue) scsi_host_next;
char *path;
@@ -441,6 +449,199 @@
}
free(name, M_TEMP);
}
+/*
+* Filler function for sys/class/net/<iface>
+* Used as reference
+* https://grok.elemental.org/source/xref/illumos-joyent/
usr/src/uts/common/brand/lx/sysfs/lx_sysvnops.c
+* and Linux kernel documentation for /sys/class/net
+* Only 2 interfaces are created eth0 and lo and they expose the following
files
+* to make applications work:
+* address, addr_len, flags, ifindex, mty, tx_queue_len and type
+*/
+
+#define LINUX_IFNAMSIZ 16
+#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();
+ TAILQ_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);
+ }
+}
+//https://grok.elemental.org/source/xref/illumos-joyent/
usr/src/uts/common/brand/lx/sysfs/lx_sysvnops.c#LXSYS_ENDP_NET_ADDRLEN
+static int
+linsysfs_ifnet_addrlen (PFS_FILL_ARGS) {
+ sbuf_printf(sb,"6\n");
+ return (0);
+}
+//;https://grok.elemental.org/source/xref/illumos-
joyent/usr/src/uts/common/brand/lx/os/lx_misc.c#859
+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);
+
+}
/*
* Constructor
@@ -452,6 +653,7 @@
struct pfs_node *dir, *sys, *cpu;
struct pfs_node *pci;
struct pfs_node *scsi;
+ struct pfs_node *net;
struct pfs_node *devdir, *chardev;
devclass_t devclass;
device_t dev;
@@ -462,6 +664,7 @@
/* /sys/class/... */
scsi = pfs_create_dir(root, "class", NULL, NULL, NULL, 0);
+ net = pfs_create_dir(scsi, "net", NULL, NULL, NULL, 0);
scsi = pfs_create_dir(scsi, "scsi_host", NULL, NULL, NULL, 0);
/* /sys/devices */
@@ -492,6 +695,7 @@
NULL, NULL, NULL, PFS_RD);
linsysfs_listcpus(cpu);
+ linsysfs_listnics(net);
return (0);
}
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