Updates to linsysfs
carlos antonio neira bustos
cneirabustos at gmail.com
Thu Oct 26 21:02:19 UTC 2017
Let me know if there is something to change on this,
Bests
On Thu, Oct 12, 2017 at 3:08 PM, carlos antonio neira bustos <
cneirabustos at gmail.com> wrote:
> 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 at 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);
> }
>
>
> On Wed, Oct 11, 2017 at 7:08 AM, carlos antonio neira bustos <
> cneirabustos at gmail.com> wrote:
>
>> Hi,
>>
>> Here are the changes, Let me know if i need to rework on this.
>>
>> Bests
>>
>> On Wed, Oct 11, 2017 at 6:59 AM, Chagin Dmitry <dchagin at freebsd.org>
>> wrote:
>>
>>> On Tue, Oct 10, 2017 at 06:20:27PM -0700, carlos antonio neira bustos
>>> wrote:
>>> > Hi,
>>> >
>>> > I just updated linsysfs to include /sys/class/net files for eth0 and
>>> > loopback device. Who could do a code review for this or maintains this
>>> > part of the linuxlator?
>>>
>>> hi, feel free to send it to me or post bug report
>>>
>>
>>
>
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