/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2010 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Debug Macros */ int strplumbdebug = 0; extern ib_boot_prop_t *iscsiboot_prop; #define DBG0(_f) \ if (strplumbdebug != 0) \ printf("strplumb: " _f) #define DBG1(_f, _a) \ if (strplumbdebug != 0) \ printf("strplumb: " _f, (_a)) #define DBG2(_f, _a, _b) \ if (strplumbdebug != 0) \ printf("strplumb: " _f, (_a), (_b)) #define DBG3(_f, _a, _b, _c) \ if (strplumbdebug != 0) \ printf("strplumb: " _f, (_a), (_b), (_c)) /* * Module linkage information for the kernel. */ #define STRPLUMB_IDENT "STREAMS Plumbing Module" static struct modlmisc modlmisc = { &mod_miscops, STRPLUMB_IDENT }; static struct modlinkage modlinkage = { MODREV_1, &modlmisc, NULL }; int _init(void) { return (mod_install(&modlinkage)); } int _fini(void) { return (mod_remove(&modlinkage)); } int _info(struct modinfo *modinfop) { return (mod_info(&modlinkage, modinfop)); } #define ARP "arp" #define TCP "tcp" #define TCP6 "tcp6" #define UDP "udp" #define UDP6 "udp6" #define ICMP "icmp" #define ICMP6 "icmp6" #define IP "ip" #define IP6 "ip6" #define TIMOD "timod" #define UDPDEV "/devices/pseudo/udp@0:udp" #define TCP6DEV "/devices/pseudo/tcp6@0:tcp6" #define UDP6DEV "/devices/pseudo/udp6@0:udp6" #define IP6DEV "/devices/pseudo/ip6@0:ip6" typedef struct strplumb_modspec { char *sm_type; char *sm_name; } strplumb_modspec_t; static strplumb_modspec_t strplumb_modlist[] = { { "drv", DLD_DRIVER_NAME }, { "drv", IP }, { "drv", IP6 }, { "drv", TCP }, { "drv", TCP6 }, { "drv", UDP }, { "drv", UDP6 }, { "drv", ICMP }, { "drv", ICMP6 }, { "drv", ARP }, { "strmod", TIMOD } }; /* * Called from swapgeneric.c:loadrootmodules() in the network boot case. */ int strplumb_load(void) { uint_t i; strplumb_modspec_t *p; DBG0("loading modules\n"); for (i = 0, p = strplumb_modlist; i < sizeof (strplumb_modlist) / sizeof (strplumb_modlist[0]); i++, p++) { if (modloadonly(p->sm_type, p->sm_name) < 0) { printf("strplumb: failed to load %s/%s\n", p->sm_type, p->sm_name); return (EFAULT); } } return (0); } static int strplumb_init(void) { uint_t i; strplumb_modspec_t *p; int err; DBG0("initializing modules\n"); for (i = 0, p = strplumb_modlist; i < sizeof (strplumb_modlist) / sizeof (strplumb_modlist[0]); i++, p++) { if (strcmp(p->sm_type, "drv") == 0) err = (i_ddi_attach_pseudo_node(p->sm_name) != NULL) ? 0 : EFAULT; else err = (modload(p->sm_type, p->sm_name) < 0) ? EFAULT : 0; if (err != 0) { printf("strplumb: failed to initialize %s/%s\n", p->sm_type, p->sm_name); return (err); } } return (0); } /* * Can be set in /etc/system in the case of local booting. See comment below. */ char *ndev_name = 0; int ndev_unit = 0; /* * If we booted diskless then strplumb() will have been called from * either: * in case of x86 NEWBOOT: vfs.c:rootconf() * in case of nfs root, the rootfs.bo_name is reset from /ramdisk:a * to empty string and we will copy netdev_path there. * or * in case of sparc: swapgeneric.c:rootconf(). * All we can do in that case is plumb the network device that we booted from. * * If we booted from a local disk, we will have been called from main(), * and normally we defer the plumbing of interfaces until network/physical. * This can be overridden by setting "ndev_name" in /etc/system. */ static int resolve_boot_path(void) { char *devpath; dev_info_t *dip; const char *driver; int instance; #ifdef _OBP char stripped_path[OBP_MAXPATHLEN]; #endif if (strncmp(rootfs.bo_fstype, "nfs", 3) == 0 && rootfs.bo_name[0] != '\0') { devpath = rootfs.bo_name; } else { devpath = strplumb_get_netdev_path(); netdev_path = devpath; if (netdev_path != NULL) { (void) strncpy(rootfs.bo_name, netdev_path, BO_MAXOBJNAME); } } if (devpath != NULL) { DBG1("resolving boot-path: %s\n", devpath); #ifdef _OBP /* * OBP passes options e.g, "net:dhcp" * remove them here */ prom_strip_options(devpath, stripped_path); devpath = stripped_path; #endif /* * Hold the devi since this is the root device. */ if ((dip = e_ddi_hold_devi_by_path(devpath, 0)) == NULL) { printf("strplumb: unable to hold root device: %s\n", devpath); return (ENXIO); } driver = ddi_driver_name(dip); instance = ddi_get_instance(dip); } else { if (ndev_name == NULL) return (ENODEV); DBG2("using ndev_name (%s) ndev_unit (%d)\n", ndev_name, ndev_unit); if (i_ddi_attach_hw_nodes(ndev_name) != DDI_SUCCESS) { printf("strplumb: cannot load ndev_name '%s'\n", ndev_name); return (ENXIO); } driver = ndev_name; instance = ndev_unit; } (void) snprintf(rootfs.bo_devname, BO_MAXOBJNAME, "/devices/pseudo/clone@0:%s", driver); (void) snprintf(rootfs.bo_ifname, BO_MAXOBJNAME, "%s%d", driver, instance); rootfs.bo_ppa = instance; return (0); } static int getifflags(ldi_handle_t lh, struct lifreq *lifrp) { struct strioctl iocb; int rval; iocb.ic_cmd = SIOCGLIFFLAGS; iocb.ic_timout = 15; iocb.ic_len = sizeof (struct lifreq); iocb.ic_dp = (char *)lifrp; return (ldi_ioctl(lh, I_STR, (intptr_t)&iocb, FKIOCTL, CRED(), &rval)); } static int setifname(ldi_handle_t lh, struct lifreq *lifrp) { struct strioctl iocb; int rval; iocb.ic_cmd = SIOCSLIFNAME; iocb.ic_timout = 15; iocb.ic_len = sizeof (struct lifreq); iocb.ic_dp = (char *)lifrp; return (ldi_ioctl(lh, I_STR, (intptr_t)&iocb, FKIOCTL, CRED(), &rval)); } static int strplumb_dev(ldi_ident_t li) { ldi_handle_t lh = NULL; ldi_handle_t mux_lh = NULL; int err; struct lifreq lifr; struct ifreq ifr; int rval; int af = 0; char *name = NULL; bzero(&lifr, sizeof (struct lifreq)); bzero(&ifr, sizeof (ifr)); if (iscsiboot_prop != NULL) { af = iscsiboot_prop->boot_nic.sin_family; } /* * Now set up the links. Ultimately, we should have two streams * permanently linked under UDP. One stream consists of the * ARP-[ifname] combination, while the other consists of IP-[ifname]. * * We pin underneath UDP here to match what is done in ifconfig(8); * otherwise, ifconfig will be unable to unplumb the stream (the major * number and mux id must both match for a successful I_PUNLINK). * * There are subtleties in the plumbing which make it essential to * follow the logic used in ifconfig(8) very closely. */ /* * Plumb UDP-IP- */ if ((err = ldi_open_by_name(rootfs.bo_devname, FREAD|FWRITE, CRED(), &lh, li)) != 0) { printf("strplumb: open %s failed: %d\n", rootfs.bo_devname, err); goto done; } if ((err = ldi_ioctl(lh, I_PUSH, (intptr_t)IP, FKIOCTL, CRED(), &rval)) != 0) { printf("strplumb: push IP failed: %d\n", err); goto done; } if ((err = getifflags(lh, &lifr)) != 0) goto done; if (af == 0 || af == AF_INET) { lifr.lifr_flags |= IFF_IPV4; lifr.lifr_flags &= ~IFF_IPV6; name = UDPDEV; } else { /* * iscsi boot is used with ipv6 enabled */ lifr.lifr_flags |= IFF_IPV6; lifr.lifr_flags &= ~IFF_IPV4; name = UDP6DEV; } (void) strlcpy(lifr.lifr_name, rootfs.bo_ifname, sizeof (lifr.lifr_name)); lifr.lifr_ppa = rootfs.bo_ppa; if ((err = setifname(lh, &lifr)) != 0) goto done; /* get the flags and check if ARP is needed */ if ((err = getifflags(lh, &lifr)) != 0) { printf("strplumb: getifflags %s IP failed, error %d\n", lifr.lifr_name, err); goto done; } if ((err = ldi_open_by_name(name, FREAD|FWRITE, CRED(), &mux_lh, li)) != 0) { printf("strplumb: open of %s failed: %d\n", name, err); goto done; } if ((err = ldi_ioctl(mux_lh, I_PLINK, (intptr_t)lh, FREAD|FWRITE|FNOCTTY|FKIOCTL, CRED(), &(ifr.ifr_ip_muxid))) != 0) { printf("strplumb: plink UDP-ARP-IP-%s failed: %d\n", rootfs.bo_ifname, err); goto done; } /* if ARP is not needed, we are done */ if (lifr.lifr_flags & (IFF_NOARP | IFF_IPV6)) goto done; DBG2("UDP-ARP-IP-%s muxid: %d\n", rootfs.bo_ifname, ifr.ifr_ip_muxid); (void) ldi_close(lh, FREAD|FWRITE, CRED()); lh = NULL; /* * Plumb UDP-ARP- */ if ((err = ldi_open_by_name(rootfs.bo_devname, FREAD|FWRITE, CRED(), &lh, li)) != 0) { printf("strplumb: open %s failed: %d\n", rootfs.bo_devname, err); goto done; } if ((err = ldi_ioctl(lh, I_PUSH, (intptr_t)ARP, FKIOCTL, CRED(), &rval)) != 0) { printf("strplumb: push ARP failed: %d\n", err); goto done; } if ((err = setifname(lh, &lifr)) != 0) goto done; if ((err = ldi_ioctl(mux_lh, I_PLINK, (intptr_t)lh, FREAD|FWRITE|FNOCTTY|FKIOCTL, CRED(), &(ifr.ifr_arp_muxid))) != 0) { printf("strplumb: plink UDP-ARP-%s failed: %d\n", rootfs.bo_ifname, err); goto done; } DBG2("UDP-ARP-%s muxid: %d\n", rootfs.bo_ifname, ifr.ifr_arp_muxid); /* * Cache the mux ids. */ (void) strlcpy(ifr.ifr_name, rootfs.bo_ifname, sizeof (ifr.ifr_name)); if ((err = ldi_ioctl(mux_lh, SIOCSIFMUXID, (intptr_t)&ifr, FKIOCTL, CRED(), &rval)) != 0) { printf("strplumb: SIOCSIFMUXID failed: %d\n", err); goto done; } done: if (lh != NULL) (void) ldi_close(lh, FREAD|FWRITE, CRED()); if (mux_lh != NULL) (void) ldi_close(mux_lh, FREAD|FWRITE, CRED()); return (err); } /* * Do streams plumbing for internet protocols. */ int strplumb(void) { ldi_ident_t li; int err; if ((err = strplumb_init()) != 0) return (err); if ((err = ldi_ident_from_mod(&modlinkage, &li)) != 0) return (err); if ((err = resolve_boot_path()) != 0) goto done; DBG1("rootfs.bo_devname: %s\n", rootfs.bo_devname); DBG1("rootfs.bo_ifname: %s\n", rootfs.bo_ifname); DBG1("rootfs.bo_ppa: %d\n", rootfs.bo_ppa); if ((err = strplumb_dev(li)) != 0) goto done; done: ldi_ident_release(li); return (err); } /* multiboot: diskless boot interface discovery */ #ifndef _OBP static uchar_t boot_macaddr[16]; static int boot_maclen; static uchar_t *getmacaddr(dev_info_t *dip, size_t *maclenp); static int matchmac(dev_info_t *dip, void *arg); #endif /* !_OBP */ char * strplumb_get_netdev_path(void) { #ifdef _OBP char fstype[OBP_MAXPROPNAME]; static char iscsi_network_path[BO_MAXOBJNAME] = {0}; int proplen; char *p = NULL; if (bop_getprop("fstype", fstype) == -1) return (NULL); if (strncmp(fstype, "nfs", 3) == 0) return (prom_bootpath()); else if (iscsiboot_prop != NULL) { proplen = BOP_GETPROPLEN(bootops, BP_ISCSI_NETWORK_BOOTPATH); if (proplen > 0) { if (BOP_GETPROP(bootops, BP_ISCSI_NETWORK_BOOTPATH, iscsi_network_path) > 0) { p = strchr(iscsi_network_path, ':'); if (p != NULL) { *p = '\0'; } return (iscsi_network_path); } } } return (NULL); #else char *macstr, *devpath = NULL; uchar_t *bootp; uint_t bootp_len; if (ddi_prop_lookup_string(DDI_DEV_T_ANY, ddi_root_node(), DDI_PROP_DONTPASS, BP_BOOT_MAC, &macstr) == DDI_SUCCESS) { /* * hard coded ether mac len for booting floppy on * machines with old cards */ boot_maclen = ether_aton(macstr, boot_macaddr); if (boot_maclen != 6) { cmn_err(CE_WARN, "malformed boot_mac property, %d bytes", boot_maclen); } ddi_prop_free(macstr); } else if (ddi_prop_lookup_byte_array(DDI_DEV_T_ANY, ddi_root_node(), DDI_PROP_DONTPASS, BP_BOOTP_RESPONSE, &bootp, &bootp_len) == DDI_SUCCESS) { /* * These offsets are defined by dhcp standard * Should use structure offsets */ boot_maclen = *(bootp + 2); ASSERT(boot_maclen <= 16); bcopy(bootp + 28, boot_macaddr, boot_maclen); dhcack = kmem_alloc(bootp_len, KM_SLEEP); bcopy(bootp, dhcack, bootp_len); dhcacklen = bootp_len; ddi_prop_free(bootp); } else if (iscsiboot_prop != NULL) { bcopy(iscsiboot_prop->boot_nic.nic_mac, boot_macaddr, IB_BOOT_MACLEN); boot_maclen = IB_BOOT_MACLEN; } else { return (NULL); } ddi_walk_devs(ddi_root_node(), matchmac, (void *)&devpath); return (devpath); #endif /* _OBP */ } #ifndef _OBP /* * Get boot path from the boot_mac address */ /*ARGSUSED*/ static int matchmac(dev_info_t *dip, void *arg) { char **devpathp = (char **)arg; char *model_str; uchar_t *macaddr; size_t maclen; /* XXX Should use "device-type" per IEEE 1275 */ if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, 0, "model", &model_str) != DDI_SUCCESS) return (DDI_WALK_CONTINUE); if (strcmp(model_str, "Ethernet controller") != 0) { ddi_prop_free(model_str); return (DDI_WALK_CONTINUE); } ddi_prop_free(model_str); /* We have a network device now */ if (i_ddi_attach_node_hierarchy(dip) != DDI_SUCCESS) { return (DDI_WALK_CONTINUE); } ASSERT(boot_maclen != 0); macaddr = getmacaddr(dip, &maclen); if (macaddr == NULL) return (DDI_WALK_CONTINUE); if (maclen != boot_maclen || bcmp(macaddr, boot_macaddr, maclen) != 0) { kmem_free(macaddr, maclen); return (DDI_WALK_CONTINUE); } /* found hardware with the mac address */ (void) localetheraddr((struct ether_addr *)macaddr, NULL); kmem_free(macaddr, maclen); *devpathp = kmem_alloc(MAXPATHLEN, KM_SLEEP); (void) ddi_pathname(dip, *devpathp); /* fill in dhcifname */ if (dhcack) { (void) snprintf(dhcifname, IFNAMSIZ, "%s%d", ddi_driver_name(dip), i_ddi_devi_get_ppa(dip)); } return (DDI_WALK_TERMINATE); } static void print_error(const char *fn, int rc, const char *drv_name, int ppa, dl_error_ack_t *dleap) { if (rc == ENOTSUP) { cmn_err(CE_WARN, "getmacaddr: %s(%s%d) failed: DL_ERROR_ACK " "DLPI errno 0x%x, UNIX errno %d", fn, drv_name, ppa, dleap->dl_errno, dleap->dl_unix_errno); } else { cmn_err(CE_WARN, "getmacaddr: %s(%s%d) failed: %d", fn, drv_name, ppa, rc); } } static uchar_t * getmacaddr(dev_info_t *dip, size_t *maclenp) { int rc, ppa; ldi_ident_t li; ldi_handle_t lh; const char *drv_name = ddi_driver_name(dip); char *clonepath; uchar_t *macaddr = NULL; dl_error_ack_t dlea; if (rc = ldi_ident_from_mod(&modlinkage, &li)) { cmn_err(CE_WARN, "%s: ldi_ident_from_mod failed: %d", __func__, rc); return (NULL); } clonepath = kmem_alloc(MAXPATHLEN, KM_SLEEP); (void) snprintf(clonepath, MAXPATHLEN, "/devices/pseudo/clone@0:%s", drv_name); rc = ldi_open_by_name(clonepath, FREAD|FWRITE, CRED(), &lh, li); ldi_ident_release(li); if (rc) { cmn_err(CE_WARN, "%s: ldi_open_by_name(%s) failed: %d", __func__, clonepath, rc); kmem_free(clonepath, MAXPATHLEN); return (NULL); } kmem_free(clonepath, MAXPATHLEN); ppa = i_ddi_devi_get_ppa(dip); rc = dl_attach(lh, ppa, &dlea); if (rc != 0) { (void) ldi_close(lh, FREAD|FWRITE, CRED()); print_error("dl_attach", rc, drv_name, ppa, &dlea); return (NULL); } rc = dl_bind(lh, ETHERTYPE_IP, &dlea); if (rc != 0) { (void) ldi_close(lh, FREAD|FWRITE, CRED()); print_error("dl_bind", rc, drv_name, ppa, &dlea); } *maclenp = ETHERADDRL; macaddr = kmem_alloc(ETHERADDRL, KM_SLEEP); rc = dl_phys_addr(lh, macaddr, maclenp, &dlea); if (rc != 0 || *maclenp != ETHERADDRL) { kmem_free(macaddr, ETHERADDRL); macaddr = NULL; *maclenp = 0; print_error("dl_phys_addr", rc, drv_name, ppa, &dlea); } (void) ldi_close(lh, FREAD|FWRITE, CRED()); return (macaddr); } #endif /* !_OBP */