diff --git a/sys/compat/linsysfs/linsysfs.c b/sys/compat/linsysfs/linsysfs.c index 356f1af7f1ac..23abd2c32743 100644 --- a/sys/compat/linsysfs/linsysfs.c +++ b/sys/compat/linsysfs/linsysfs.c @@ -1,738 +1,568 @@ /*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2006 IronPort Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include -#include #include #include #include #include -#include -#include -#include - -#include -#include #include #include +#include + +MALLOC_DEFINE(M_LINSYSFS, "linsysfs", "Linsysfs structures"); + struct scsi_host_queue { TAILQ_ENTRY(scsi_host_queue) scsi_host_next; char *path; char *name; }; TAILQ_HEAD(,scsi_host_queue) scsi_host_q; static int host_number = 0; static int atoi(const char *str) { return (int)strtol(str, (char **)NULL, 10); } -static int -linsysfs_ifnet_addr(PFS_FILL_ARGS) -{ - struct epoch_tracker et; - struct l_sockaddr lsa; - struct ifnet *ifp; - int error; - - CURVNET_SET(TD_TO_VNET(td)); - NET_EPOCH_ENTER(et); - ifp = ifname_linux_to_ifp(td, pn->pn_parent->pn_name); - if (ifp != NULL && (error = linux_ifhwaddr(ifp, &lsa)) == 0) - error = sbuf_printf(sb, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx\n", - lsa.sa_data[0], lsa.sa_data[1], lsa.sa_data[2], - lsa.sa_data[3], lsa.sa_data[4], lsa.sa_data[5]); - else - error = ENOENT; - NET_EPOCH_EXIT(et); - CURVNET_RESTORE(); - return (error == -1 ? ERANGE : error); -} - -static int -linsysfs_ifnet_addrlen(PFS_FILL_ARGS) -{ - - sbuf_printf(sb, "%d\n", LINUX_IFHWADDRLEN); - return (0); -} - -static int -linsysfs_ifnet_flags(PFS_FILL_ARGS) -{ - struct epoch_tracker et; - struct ifnet *ifp; - int error; - - CURVNET_SET(TD_TO_VNET(td)); - NET_EPOCH_ENTER(et); - ifp = ifname_linux_to_ifp(td, pn->pn_parent->pn_name); - if (ifp != NULL) - error = sbuf_printf(sb, "0x%x\n", linux_ifflags(ifp)); - else - error = ENOENT; - NET_EPOCH_EXIT(et); - CURVNET_RESTORE(); - return (error == -1 ? ERANGE : error); -} - -static int -linsysfs_ifnet_ifindex(PFS_FILL_ARGS) -{ - struct epoch_tracker et; - struct ifnet *ifp; - int error; - - CURVNET_SET(TD_TO_VNET(td)); - NET_EPOCH_ENTER(et); - ifp = ifname_linux_to_ifp(td, pn->pn_parent->pn_name); - if (ifp != NULL) - error = sbuf_printf(sb, "%u\n", if_getindex(ifp)); - else - error = ENOENT; - NET_EPOCH_EXIT(et); - CURVNET_RESTORE(); - return (error == -1 ? ERANGE : error); -} - -static int -linsysfs_ifnet_mtu(PFS_FILL_ARGS) -{ - struct epoch_tracker et; - struct ifnet *ifp; - int error; - - CURVNET_SET(TD_TO_VNET(td)); - NET_EPOCH_ENTER(et); - ifp = ifname_linux_to_ifp(td, pn->pn_parent->pn_name); - if (ifp != NULL) - error = sbuf_printf(sb, "%u\n", if_getmtu(ifp)); - else - error = ENOENT; - NET_EPOCH_EXIT(et); - CURVNET_RESTORE(); - return (error == -1 ? ERANGE : error); -} - -static int -linsysfs_ifnet_tx_queue_len(PFS_FILL_ARGS) -{ - - /* XXX */ - sbuf_printf(sb, "1000\n"); - return (0); -} - -static int -linsysfs_ifnet_type(PFS_FILL_ARGS) -{ - struct epoch_tracker et; - struct l_sockaddr lsa; - struct ifnet *ifp; - int error; - - CURVNET_SET(TD_TO_VNET(td)); - NET_EPOCH_ENTER(et); - ifp = ifname_linux_to_ifp(td, pn->pn_parent->pn_name); - if (ifp != NULL && (error = linux_ifhwaddr(ifp, &lsa)) == 0) - error = sbuf_printf(sb, "%d\n", lsa.sa_family); - else - error = ENOENT; - NET_EPOCH_EXIT(et); - CURVNET_RESTORE(); - return (error == -1 ? ERANGE : error); -} - -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 */ static int linsysfs_scsiname(PFS_FILL_ARGS) { struct scsi_host_queue *scsi_host; int index; if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) { index = atoi(&pn->pn_parent->pn_name[4]); } else { sbuf_printf(sb, "unknown\n"); return (0); } TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) { if (index-- == 0) { sbuf_printf(sb, "%s\n", scsi_host->name); return (0); } } sbuf_printf(sb, "unknown\n"); return (0); } /* * Filler function for device sym-link */ static int linsysfs_link_scsi_host(PFS_FILL_ARGS) { struct scsi_host_queue *scsi_host; int index; if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) { index = atoi(&pn->pn_parent->pn_name[4]); } else { sbuf_printf(sb, "unknown\n"); return (0); } TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) { if (index-- == 0) { sbuf_printf(sb, "../../../devices%s", scsi_host->path); return(0); } } sbuf_printf(sb, "unknown\n"); return (0); } static int linsysfs_fill_data(PFS_FILL_ARGS) { sbuf_printf(sb, "%s", (char *)pn->pn_data); return (0); } static int linsysfs_fill_vendor(PFS_FILL_ARGS) { sbuf_printf(sb, "0x%04x\n", pci_get_vendor((device_t)pn->pn_data)); return (0); } static int linsysfs_fill_device(PFS_FILL_ARGS) { sbuf_printf(sb, "0x%04x\n", pci_get_device((device_t)pn->pn_data)); return (0); } static int linsysfs_fill_subvendor(PFS_FILL_ARGS) { sbuf_printf(sb, "0x%04x\n", pci_get_subvendor((device_t)pn->pn_data)); return (0); } static int linsysfs_fill_subdevice(PFS_FILL_ARGS) { sbuf_printf(sb, "0x%04x\n", pci_get_subdevice((device_t)pn->pn_data)); return (0); } static int linsysfs_fill_revid(PFS_FILL_ARGS) { sbuf_printf(sb, "0x%x\n", pci_get_revid((device_t)pn->pn_data)); return (0); } static int linsysfs_fill_config(PFS_FILL_ARGS) { uint8_t config[48]; device_t dev; uint32_t reg; dev = (device_t)pn->pn_data; bzero(config, sizeof(config)); reg = pci_get_vendor(dev); config[0] = reg; config[1] = reg >> 8; reg = pci_get_device(dev); config[2] = reg; config[3] = reg >> 8; reg = pci_get_revid(dev); config[8] = reg; reg = pci_get_subvendor(dev); config[44] = reg; config[45] = reg >> 8; reg = pci_get_subdevice(dev); config[46] = reg; config[47] = reg >> 8; sbuf_bcat(sb, config, sizeof(config)); return (0); } /* * Filler function for PCI uevent file */ static int linsysfs_fill_uevent_pci(PFS_FILL_ARGS) { device_t dev; dev = (device_t)pn->pn_data; sbuf_printf(sb, "DRIVER=%s\nPCI_CLASS=%X\nPCI_ID=%04X:%04X\n" "PCI_SUBSYS_ID=%04X:%04X\nPCI_SLOT_NAME=%04d:%02x:%02x.%x\n", linux_driver_get_name_dev(dev), pci_get_class(dev), pci_get_vendor(dev), pci_get_device(dev), pci_get_subvendor(dev), pci_get_subdevice(dev), pci_get_domain(dev), pci_get_bus(dev), pci_get_slot(dev), pci_get_function(dev)); return (0); } /* * Filler function for drm uevent file */ static int linsysfs_fill_uevent_drm(PFS_FILL_ARGS) { device_t dev; int unit; dev = (device_t)pn->pn_data; unit = device_get_unit(dev); sbuf_printf(sb, "MAJOR=226\nMINOR=%d\nDEVNAME=dri/card%d\nDEVTYPE=dri_minor\n", unit, unit); return (0); } static char * get_full_pfs_path(struct pfs_node *cur) { char *temp, *path; temp = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); path = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); path[0] = '\0'; do { snprintf(temp, MAXPATHLEN, "%s/%s", cur->pn_name, path); strlcpy(path, temp, MAXPATHLEN); cur = cur->pn_parent; } while (cur->pn_parent != NULL); path[strlen(path) - 1] = '\0'; /* remove extra slash */ free(temp, M_TEMP); return (path); } /* * Filler function for symlink from drm char device to PCI device */ static int linsysfs_fill_vgapci(PFS_FILL_ARGS) { char *path; path = get_full_pfs_path((struct pfs_node*)pn->pn_data); sbuf_printf(sb, "../../../%s", path); free(path, M_TEMP); return (0); } #undef PCI_DEV #define PCI_DEV "pci" #define DRMN_DEV "drmn" static int linsysfs_run_bus(device_t dev, struct pfs_node *dir, struct pfs_node *scsi, struct pfs_node *chardev, struct pfs_node *drm, char *path, char *prefix) { struct scsi_host_queue *scsi_host; struct pfs_node *sub_dir, *cur_file; int i, nchildren, error; device_t *children, parent; devclass_t devclass; const char *name = NULL; struct pci_devinfo *dinfo; char *device, *host, *new_path, *devname; new_path = path; devname = malloc(16, M_TEMP, M_WAITOK); parent = device_get_parent(dev); if (parent) { devclass = device_get_devclass(parent); if (devclass != NULL) name = devclass_get_name(devclass); if (name && strcmp(name, PCI_DEV) == 0) { dinfo = device_get_ivars(dev); if (dinfo) { device = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); new_path = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); new_path[0] = '\000'; strcpy(new_path, path); host = malloc(MAXPATHLEN, M_TEMP, M_WAITOK); device[0] = '\000'; sprintf(device, "%s:%02x:%02x.%x", prefix, dinfo->cfg.bus, dinfo->cfg.slot, dinfo->cfg.func); strcat(new_path, "/"); strcat(new_path, device); dir = pfs_create_dir(dir, device, NULL, NULL, NULL, 0); cur_file = pfs_create_file(dir, "vendor", &linsysfs_fill_vendor, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; cur_file = pfs_create_file(dir, "device", &linsysfs_fill_device, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; cur_file = pfs_create_file(dir, "subsystem_vendor", &linsysfs_fill_subvendor, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; cur_file = pfs_create_file(dir, "subsystem_device", &linsysfs_fill_subdevice, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; cur_file = pfs_create_file(dir, "revision", &linsysfs_fill_revid, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; cur_file = pfs_create_file(dir, "config", &linsysfs_fill_config, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; cur_file = pfs_create_file(dir, "uevent", &linsysfs_fill_uevent_pci, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; cur_file = pfs_create_link(dir, "subsystem", &linsysfs_fill_data, NULL, NULL, NULL, 0); /* libdrm just checks that the link ends in "/pci" */ cur_file->pn_data = "/sys/bus/pci"; if (dinfo->cfg.baseclass == PCIC_STORAGE) { /* DJA only make this if needed */ sprintf(host, "host%d", host_number++); strcat(new_path, "/"); strcat(new_path, host); pfs_create_dir(dir, host, NULL, NULL, NULL, 0); scsi_host = malloc(sizeof( struct scsi_host_queue), M_DEVBUF, M_NOWAIT); scsi_host->path = malloc( strlen(new_path) + 1, M_DEVBUF, M_NOWAIT); scsi_host->path[0] = '\000'; bcopy(new_path, scsi_host->path, strlen(new_path) + 1); scsi_host->name = "unknown"; sub_dir = pfs_create_dir(scsi, host, NULL, NULL, NULL, 0); pfs_create_link(sub_dir, "device", &linsysfs_link_scsi_host, NULL, NULL, NULL, 0); pfs_create_file(sub_dir, "proc_name", &linsysfs_scsiname, NULL, NULL, NULL, PFS_RD); scsi_host->name = linux_driver_get_name_dev(dev); TAILQ_INSERT_TAIL(&scsi_host_q, scsi_host, scsi_host_next); } free(device, M_TEMP); free(host, M_TEMP); } } devclass = device_get_devclass(dev); if (devclass != NULL) name = devclass_get_name(devclass); else name = NULL; if (name != NULL && strcmp(name, DRMN_DEV) == 0 && device_get_unit(dev) >= 0) { dinfo = device_get_ivars(parent); if (dinfo != NULL && dinfo->cfg.baseclass == PCIC_DISPLAY) { pfs_create_dir(dir, "drm", NULL, NULL, NULL, 0); sprintf(devname, "226:%d", device_get_unit(dev)); sub_dir = pfs_create_dir(chardev, devname, NULL, NULL, NULL, 0); cur_file = pfs_create_link(sub_dir, "device", &linsysfs_fill_vgapci, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dir; cur_file = pfs_create_file(sub_dir, "uevent", &linsysfs_fill_uevent_drm, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dev; sprintf(devname, "card%d", device_get_unit(dev)); sub_dir = pfs_create_dir(drm, devname, NULL, NULL, NULL, 0); cur_file = pfs_create_link(sub_dir, "device", &linsysfs_fill_vgapci, NULL, NULL, NULL, PFS_RD); cur_file->pn_data = (void*)dir; } } } error = device_get_children(dev, &children, &nchildren); if (error == 0) { for (i = 0; i < nchildren; i++) if (children[i]) linsysfs_run_bus(children[i], dir, scsi, chardev, drm, new_path, prefix); free(children, M_TEMP); } if (new_path != path) free(new_path, M_TEMP); free(devname, M_TEMP); return (1); } /* * Filler function for sys/devices/system/cpu/{online,possible,present} */ static int linsysfs_cpuonline(PFS_FILL_ARGS) { sbuf_printf(sb, "%d-%d\n", CPU_FIRST(), mp_maxid); return (0); } /* * Filler function for sys/devices/system/cpu/cpuX/online */ static int linsysfs_cpuxonline(PFS_FILL_ARGS) { sbuf_printf(sb, "1\n"); return (0); } static void linsysfs_listcpus(struct pfs_node *dir) { struct pfs_node *cpu; char *name; int i, count, len; len = 1; count = mp_maxcpus; while (count > 10) { count /= 10; len++; } len += sizeof("cpu"); name = malloc(len, M_TEMP, M_WAITOK); for (i = 0; i < mp_ncpus; ++i) { /* /sys/devices/system/cpu/cpuX */ sprintf(name, "cpu%d", i); cpu = pfs_create_dir(dir, name, NULL, NULL, NULL, 0); pfs_create_file(cpu, "online", &linsysfs_cpuxonline, NULL, NULL, NULL, PFS_RD); } free(name, M_TEMP); } /* * Constructor */ static int linsysfs_init(PFS_INIT_ARGS) { struct pfs_node *root; struct pfs_node *class; struct pfs_node *dir, *sys, *cpu; struct pfs_node *drm; struct pfs_node *pci; struct pfs_node *scsi; - struct pfs_node *net; struct pfs_node *devdir, *chardev; struct pfs_node *kernel; devclass_t devclass; device_t dev; TAILQ_INIT(&scsi_host_q); root = pi->pi_root; /* /sys/bus/... */ dir = pfs_create_dir(root, "bus", NULL, NULL, NULL, 0); /* /sys/class/... */ class = pfs_create_dir(root, "class", NULL, NULL, NULL, 0); scsi = pfs_create_dir(class, "scsi_host", NULL, NULL, NULL, 0); drm = pfs_create_dir(class, "drm", NULL, NULL, NULL, 0); pfs_create_dir(class, "power_supply", 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); /* /sys/devices/... */ dir = pfs_create_dir(root, "devices", NULL, NULL, NULL, 0); pci = pfs_create_dir(dir, "pci0000:00", NULL, NULL, NULL, 0); devclass = devclass_find("root"); if (devclass == NULL) { return (0); } dev = devclass_get_device(devclass, 0); linsysfs_run_bus(dev, pci, scsi, chardev, drm, "/pci0000:00", "0000"); /* /sys/devices/system */ sys = pfs_create_dir(dir, "system", NULL, NULL, NULL, 0); /* /sys/devices/system/cpu */ cpu = pfs_create_dir(sys, "cpu", NULL, NULL, NULL, 0); pfs_create_file(cpu, "online", &linsysfs_cpuonline, NULL, NULL, NULL, PFS_RD); pfs_create_file(cpu, "possible", &linsysfs_cpuonline, NULL, NULL, NULL, PFS_RD); pfs_create_file(cpu, "present", &linsysfs_cpuonline, NULL, NULL, NULL, PFS_RD); linsysfs_listcpus(cpu); - linsysfs_listnics(net); /* /sys/kernel */ kernel = pfs_create_dir(root, "kernel", NULL, NULL, NULL, 0); /* /sys/kernel/debug, mountpoint for lindebugfs. */ pfs_create_dir(kernel, "debug", NULL, NULL, NULL, 0); + linsysfs_net_init(); + return (0); } /* * Destructor */ static int linsysfs_uninit(PFS_INIT_ARGS) { struct scsi_host_queue *scsi_host, *scsi_host_tmp; TAILQ_FOREACH_SAFE(scsi_host, &scsi_host_q, scsi_host_next, scsi_host_tmp) { TAILQ_REMOVE(&scsi_host_q, scsi_host, scsi_host_next); free(scsi_host->path, M_TEMP); free(scsi_host, M_TEMP); } + linsysfs_net_uninit(); + return (0); } PSEUDOFS(linsysfs, 1, VFCF_JAIL); #if defined(__aarch64__) || defined(__amd64__) MODULE_DEPEND(linsysfs, linux_common, 1, 1, 1); #else MODULE_DEPEND(linsysfs, linux, 1, 1, 1); #endif diff --git a/sys/compat/linsysfs/linsysfs.h b/sys/compat/linsysfs/linsysfs.h new file mode 100644 index 000000000000..005c0e090a6b --- /dev/null +++ b/sys/compat/linsysfs/linsysfs.h @@ -0,0 +1,38 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 2023 Dmitry Chagin + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef _COMPAT_LINSYSFS_LINSYSFS_H_ +#define _COMPAT_LINSYSFS_LINSYSFS_H_ + +MALLOC_DECLARE(M_LINSYSFS); + +extern struct pfs_node *net; + +void linsysfs_net_init(void); +void linsysfs_net_uninit(void); + +#endif /* _COMPAT_LINSYSFS_LINSYSFS_H_ */ diff --git a/sys/compat/linsysfs/linsysfs_net.c b/sys/compat/linsysfs/linsysfs_net.c new file mode 100644 index 000000000000..bd695da2cbb0 --- /dev/null +++ b/sys/compat/linsysfs/linsysfs_net.c @@ -0,0 +1,356 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 2023 Dmitry Chagin + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +__FBSDID("$FreeBSD$"); + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include +#include + +#include + +struct pfs_node *net; +static eventhandler_tag if_arrival_tag, if_departure_tag; + +static uint32_t net_latch_count = 0; +static struct mtx net_latch_mtx; +MTX_SYSINIT(net_latch_mtx, &net_latch_mtx, "lsfnet", MTX_DEF); + +struct ifp_nodes_queue { + TAILQ_ENTRY(ifp_nodes_queue) ifp_nodes_next; + if_t ifp; + struct vnet *vnet; + struct pfs_node *pn; +}; +TAILQ_HEAD(,ifp_nodes_queue) ifp_nodes_q; + +static void +linsysfs_net_latch_hold(void) +{ + + mtx_lock(&net_latch_mtx); + if (net_latch_count++ > 0) + mtx_sleep(&net_latch_count, &net_latch_mtx, PDROP, "lsfnet", 0); + else + mtx_unlock(&net_latch_mtx); +} + +static void +linsysfs_net_latch_rele(void) +{ + + mtx_lock(&net_latch_mtx); + if (--net_latch_count > 0) + wakeup_one(&net_latch_count); + mtx_unlock(&net_latch_mtx); +} + +static int +linsysfs_if_addr(PFS_FILL_ARGS) +{ + struct epoch_tracker et; + struct l_sockaddr lsa; + if_t ifp; + int error; + + CURVNET_SET(TD_TO_VNET(td)); + NET_EPOCH_ENTER(et); + ifp = ifname_linux_to_ifp(td, pn->pn_parent->pn_name); + if (ifp != NULL && (error = linux_ifhwaddr(ifp, &lsa)) == 0) + error = sbuf_printf(sb, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx\n", + lsa.sa_data[0], lsa.sa_data[1], lsa.sa_data[2], + lsa.sa_data[3], lsa.sa_data[4], lsa.sa_data[5]); + else + error = ENOENT; + NET_EPOCH_EXIT(et); + CURVNET_RESTORE(); + return (error == -1 ? ERANGE : error); +} + +static int +linsysfs_if_addrlen(PFS_FILL_ARGS) +{ + + sbuf_printf(sb, "%d\n", LINUX_IFHWADDRLEN); + return (0); +} + +static int +linsysfs_if_flags(PFS_FILL_ARGS) +{ + struct epoch_tracker et; + if_t ifp; + int error; + + CURVNET_SET(TD_TO_VNET(td)); + NET_EPOCH_ENTER(et); + ifp = ifname_linux_to_ifp(td, pn->pn_parent->pn_name); + if (ifp != NULL) + error = sbuf_printf(sb, "0x%x\n", linux_ifflags(ifp)); + else + error = ENOENT; + NET_EPOCH_EXIT(et); + CURVNET_RESTORE(); + return (error == -1 ? ERANGE : error); +} + +static int +linsysfs_if_ifindex(PFS_FILL_ARGS) +{ + struct epoch_tracker et; + if_t ifp; + int error; + + CURVNET_SET(TD_TO_VNET(td)); + NET_EPOCH_ENTER(et); + ifp = ifname_linux_to_ifp(td, pn->pn_parent->pn_name); + if (ifp != NULL) + error = sbuf_printf(sb, "%u\n", if_getindex(ifp)); + else + error = ENOENT; + NET_EPOCH_EXIT(et); + CURVNET_RESTORE(); + return (error == -1 ? ERANGE : error); +} + +static int +linsysfs_if_mtu(PFS_FILL_ARGS) +{ + struct epoch_tracker et; + if_t ifp; + int error; + + CURVNET_SET(TD_TO_VNET(td)); + NET_EPOCH_ENTER(et); + ifp = ifname_linux_to_ifp(td, pn->pn_parent->pn_name); + if (ifp != NULL) + error = sbuf_printf(sb, "%u\n", if_getmtu(ifp)); + else + error = ENOENT; + NET_EPOCH_EXIT(et); + CURVNET_RESTORE(); + return (error == -1 ? ERANGE : error); +} + +static int +linsysfs_if_txq_len(PFS_FILL_ARGS) +{ + + /* XXX */ + sbuf_printf(sb, "1000\n"); + return (0); +} + +static int +linsysfs_if_type(PFS_FILL_ARGS) +{ + struct epoch_tracker et; + struct l_sockaddr lsa; + if_t ifp; + int error; + + CURVNET_SET(TD_TO_VNET(td)); + NET_EPOCH_ENTER(et); + ifp = ifname_linux_to_ifp(td, pn->pn_parent->pn_name); + if (ifp != NULL && (error = linux_ifhwaddr(ifp, &lsa)) == 0) + error = sbuf_printf(sb, "%d\n", lsa.sa_family); + else + error = ENOENT; + NET_EPOCH_EXIT(et); + CURVNET_RESTORE(); + return (error == -1 ? ERANGE : error); +} + +static int +linsysfs_if_visible(PFS_VIS_ARGS) +{ + struct ifp_nodes_queue *nq, *nq_tmp; + struct epoch_tracker et; + if_t ifp; + int visible; + + visible = 0; + CURVNET_SET(TD_TO_VNET(td)); + NET_EPOCH_ENTER(et); + ifp = ifname_linux_to_ifp(td, pn->pn_name); + if (ifp != NULL) { + TAILQ_FOREACH_SAFE(nq, &ifp_nodes_q, ifp_nodes_next, nq_tmp) { + if (nq->ifp == ifp && nq->vnet == curvnet) { + visible = 1; + break; + } + } + } + NET_EPOCH_EXIT(et); + CURVNET_RESTORE(); + return (visible); +} + +static int +linsysfs_net_addif(if_t ifp, void *arg) +{ + struct ifp_nodes_queue *nq, *nq_tmp; + struct pfs_node *nic, *dir = arg; + char ifname[LINUX_IFNAMSIZ]; + struct epoch_tracker et; + int ret __diagused; + + NET_EPOCH_ENTER(et); + ret = ifname_bsd_to_linux_ifp(ifp, ifname, sizeof(ifname)); + NET_EPOCH_EXIT(et); + KASSERT(ret > 0, ("Interface (%s) is not converted", if_name(ifp))); + + nic = pfs_find_node(dir, ifname); + if (nic == NULL) { + nic = pfs_create_dir(dir, ifname, NULL, linsysfs_if_visible, + NULL, 0); + pfs_create_file(nic, "address", &linsysfs_if_addr, + NULL, NULL, NULL, PFS_RD); + pfs_create_file(nic, "addr_len", &linsysfs_if_addrlen, + NULL, NULL, NULL, PFS_RD); + pfs_create_file(nic, "flags", &linsysfs_if_flags, + NULL, NULL, NULL, PFS_RD); + pfs_create_file(nic, "ifindex", &linsysfs_if_ifindex, + NULL, NULL, NULL, PFS_RD); + pfs_create_file(nic, "mtu", &linsysfs_if_mtu, + NULL, NULL, NULL, PFS_RD); + pfs_create_file(nic, "tx_queue_len", &linsysfs_if_txq_len, + NULL, NULL, NULL, PFS_RD); + pfs_create_file(nic, "type", &linsysfs_if_type, + NULL, NULL, NULL, PFS_RD); + } + /* + * There is a small window between registering the if_arrival + * eventhandler and creating a list of interfaces. + */ + TAILQ_FOREACH_SAFE(nq, &ifp_nodes_q, ifp_nodes_next, nq_tmp) { + if (nq->ifp == ifp && nq->vnet == curvnet) + return (0); + } + nq = malloc(sizeof(*nq), M_LINSYSFS, M_WAITOK); + nq->pn = nic; + nq->ifp = ifp; + nq->vnet = curvnet; + TAILQ_INSERT_TAIL(&ifp_nodes_q, nq, ifp_nodes_next); + return (0); +} + +static void +linsysfs_net_delif(if_t ifp) +{ + struct ifp_nodes_queue *nq, *nq_tmp; + struct pfs_node *pn; + + pn = NULL; + TAILQ_FOREACH_SAFE(nq, &ifp_nodes_q, ifp_nodes_next, nq_tmp) { + if (nq->ifp == ifp && nq->vnet == curvnet) { + TAILQ_REMOVE(&ifp_nodes_q, nq, ifp_nodes_next); + pn = nq->pn; + free(nq, M_LINSYSFS); + break; + } + } + if (pn == NULL) + return; + TAILQ_FOREACH_SAFE(nq, &ifp_nodes_q, ifp_nodes_next, nq_tmp) { + if (nq->pn == pn) + return; + } + pfs_destroy(pn); +} + +static void +linsysfs_if_arrival(void *arg __unused, if_t ifp) +{ + + linsysfs_net_latch_hold(); + (void)linsysfs_net_addif(ifp, net); + linsysfs_net_latch_rele(); +} + +static void +linsysfs_if_departure(void *arg __unused, if_t ifp) +{ + + linsysfs_net_latch_hold(); + linsysfs_net_delif(ifp); + linsysfs_net_latch_rele(); +} + +void +linsysfs_net_init(void) +{ + VNET_ITERATOR_DECL(vnet_iter); + + MPASS(net != NULL); + TAILQ_INIT(&ifp_nodes_q); + + if_arrival_tag = EVENTHANDLER_REGISTER(ifnet_arrival_event, + linsysfs_if_arrival, NULL, EVENTHANDLER_PRI_ANY); + if_departure_tag = EVENTHANDLER_REGISTER(ifnet_departure_event, + linsysfs_if_departure, NULL, EVENTHANDLER_PRI_ANY); + + linsysfs_net_latch_hold(); + VNET_LIST_RLOCK(); + VNET_FOREACH(vnet_iter) { + CURVNET_SET(vnet_iter); + if_foreach_sleep(NULL, NULL, linsysfs_net_addif, net); + CURVNET_RESTORE(); + } + VNET_LIST_RUNLOCK(); + linsysfs_net_latch_rele(); +} + +void +linsysfs_net_uninit(void) +{ + struct ifp_nodes_queue *nq, *nq_tmp; + + EVENTHANDLER_DEREGISTER(ifnet_arrival_event, if_arrival_tag); + EVENTHANDLER_DEREGISTER(ifnet_departure_event, if_departure_tag); + + linsysfs_net_latch_hold(); + TAILQ_FOREACH_SAFE(nq, &ifp_nodes_q, ifp_nodes_next, nq_tmp) { + TAILQ_REMOVE(&ifp_nodes_q, nq, ifp_nodes_next); + free(nq, M_LINSYSFS); + } + linsysfs_net_latch_rele(); +} diff --git a/sys/modules/linsysfs/Makefile b/sys/modules/linsysfs/Makefile index 058fbbc521b1..8ec02da435e4 100644 --- a/sys/modules/linsysfs/Makefile +++ b/sys/modules/linsysfs/Makefile @@ -1,14 +1,14 @@ # $FreeBSD$ .PATH: ${SRCTOP}/sys/compat/linsysfs KMOD= linsysfs SRCS= vnode_if.h \ device_if.h bus_if.h pci_if.h \ - linsysfs.c + linsysfs.c linsysfs_net.c .if !defined(KERNBUILDDIR) .warning Building Linuxulator outside of a kernel does not make sense .endif .include