Index: linsysfs.c =================================================================== --- linsysfs.c +++ linsysfs.c @@ -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 @@ -25,7 +26,7 @@ */ #include -__FBSDID("$FreeBSD: releng/11.1/sys/compat/linsysfs/linsysfs.c 317318 2017-04-23 06:45:21Z dchagin $"); +__FBSDID("$FreeBSD$"); #include #include @@ -51,7 +52,12 @@ #include #include +#include #include +#include +#include +#include +#include #include #include @@ -66,6 +72,10 @@ #include #include #include +#include + +#define LINUX_IFNAMSIZ 16 + struct scsi_host_queue { TAILQ_ENTRY(scsi_host_queue) scsi_host_next; @@ -77,6 +87,7 @@ static int host_number = 0; + static int atoi(const char *str) { @@ -270,6 +281,197 @@ } /* +* Filler function for sys/class/net/ +* 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 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 */ static int @@ -279,6 +481,7 @@ struct pfs_node *dir, *sys, *cpu; struct pfs_node *pci; struct pfs_node *scsi; + struct pfs_node *net; devclass_t devclass; device_t dev; @@ -288,6 +491,10 @@ /* /sys/class/... */ scsi = pfs_create_dir(root, "class", NULL, NULL, NULL, 0); + + /* /sys/class/net/.. */ + net = pfs_create_dir(scsi, "net", NULL, NULL, NULL, 0); + scsi = pfs_create_dir(scsi, "scsi_host", NULL, NULL, NULL, 0); /* /sys/devices */ @@ -314,6 +521,7 @@ NULL, NULL, NULL, PFS_RD); linsysfs_listcpus(cpu); + linsysfs_listnics(net); return (0); } @@ -336,6 +544,10 @@ return (0); } + + + + PSEUDOFS(linsysfs, 1, PR_ALLOW_MOUNT_LINSYSFS); #if defined(__amd64__) MODULE_DEPEND(linsysfs, linux_common, 1, 1, 1);