/* * Copyright (c) 2003 * Bill Paul . 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Bill Paul. * 4. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define NDIS_DUMMY_PATH "\\\\some\\bogus\\path" __stdcall static void ndis_status_func(ndis_handle, ndis_status, void *, uint32_t); __stdcall static void ndis_statusdone_func(ndis_handle); __stdcall static void ndis_setdone_func(ndis_handle, ndis_status); __stdcall static void ndis_getdone_func(ndis_handle, ndis_status); __stdcall static void ndis_resetdone_func(ndis_handle, ndis_status, uint8_t); __stdcall static void ndis_sendrsrcavail_func(ndis_handle); struct nd_head ndis_devhead; struct ndis_req { void (*nr_func)(void *); void *nr_arg; int nr_exit; STAILQ_ENTRY(ndis_req) link; }; struct ndisproc { struct ndisqhead *np_q; struct proc *np_p; int np_state; }; static int ndis_create_kthreads(void); static void ndis_destroy_kthreads(void); static void ndis_stop_thread(int); static int ndis_enlarge_thrqueue(int); static int ndis_shrink_thrqueue(int); static void ndis_runq(void *); extern struct mtx_pool *ndis_mtxpool; static uma_zone_t ndis_packet_zone, ndis_buffer_zone; struct mtx *ndis_thr_mtx; static STAILQ_HEAD(ndisqhead, ndis_req) ndis_ttodo; struct ndisqhead ndis_itodo; struct ndisqhead ndis_free; static int ndis_jobs = 32; static struct ndisproc ndis_tproc; static struct ndisproc ndis_iproc; /* * This allows us to export our symbols to other modules. * Note that we call ourselves 'ndisapi' to avoid a namespace * collision with if_ndis.ko, which internally calls itself * 'ndis.' */ static int ndis_modevent(module_t mod, int cmd, void *arg) { int error = 0; switch (cmd) { case MOD_LOAD: /* Initialize subsystems */ ndis_libinit(); ntoskrnl_libinit(); /* Initialize TX buffer UMA zone. */ ndis_packet_zone = uma_zcreate("NDIS packet", sizeof(ndis_packet), NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); ndis_buffer_zone = uma_zcreate("NDIS buffer", sizeof(ndis_buffer), NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); ndis_create_kthreads(); TAILQ_INIT(&ndis_devhead); break; case MOD_SHUTDOWN: /* stop kthreads */ ndis_destroy_kthreads(); if (TAILQ_FIRST(&ndis_devhead) == NULL) { /* Shut down subsystems */ ndis_libfini(); ntoskrnl_libfini(); /* Remove zones */ uma_zdestroy(ndis_packet_zone); uma_zdestroy(ndis_buffer_zone); } break; case MOD_UNLOAD: /* stop kthreads */ ndis_destroy_kthreads(); /* Shut down subsystems */ ndis_libfini(); ntoskrnl_libfini(); /* Remove zones */ uma_zdestroy(ndis_packet_zone); uma_zdestroy(ndis_buffer_zone); break; default: error = EINVAL; break; } return(error); } DEV_MODULE(ndisapi, ndis_modevent, NULL); MODULE_VERSION(ndisapi, 1); /* * We create two kthreads for the NDIS subsystem. One of them is a task * queue for performing various odd jobs. The other is an swi thread * reserved exclusively for running interrupt handlers. The reason we * have our own task queue is that there are some cases where we may * need to sleep for a significant amount of time, and if we were to * use one of the taskqueue threads, we might delay the processing * of other pending tasks which might need to run right away. We have * a separate swi thread because we don't want our interrupt handling * to be delayed either. * * By default there are 32 jobs available to start, and another 8 * are added to the free list each time a new device is created. */ static void ndis_runq(arg) void *arg; { struct ndis_req *r = NULL, *die = NULL; struct ndisproc *p; p = arg; while (1) { kthread_suspend(p->np_p, 0); /* Look for any jobs on the work queue. */ mtx_pool_lock(ndis_mtxpool, ndis_thr_mtx); p->np_state = NDIS_PSTATE_RUNNING; while(STAILQ_FIRST(p->np_q) != NULL) { r = STAILQ_FIRST(p->np_q); STAILQ_REMOVE_HEAD(p->np_q, link); mtx_pool_unlock(ndis_mtxpool, ndis_thr_mtx); /* Do the work. */ if (r->nr_func != NULL) (*r->nr_func)(r->nr_arg); mtx_pool_lock(ndis_mtxpool, ndis_thr_mtx); STAILQ_INSERT_HEAD(&ndis_free, r, link); /* Check for a shutdown request */ if (r->nr_exit == TRUE) die = r; } p->np_state = NDIS_PSTATE_SLEEPING; mtx_pool_unlock(ndis_mtxpool, ndis_thr_mtx); /* Bail if we were told to shut down. */ if (die != NULL) break; } wakeup(die); kthread_exit(0); } static int ndis_create_kthreads() { struct ndis_req *r; int i, error = 0; ndis_thr_mtx = mtx_pool_alloc(ndis_mtxpool); STAILQ_INIT(&ndis_ttodo); STAILQ_INIT(&ndis_itodo); STAILQ_INIT(&ndis_free); for (i = 0; i < ndis_jobs; i++) { r = malloc(sizeof(struct ndis_req), M_DEVBUF, M_WAITOK); if (r == NULL) { error = ENOMEM; break; } STAILQ_INSERT_HEAD(&ndis_free, r, link); } if (error == 0) { ndis_tproc.np_q = &ndis_ttodo; ndis_tproc.np_state = NDIS_PSTATE_SLEEPING; error = kthread_create(ndis_runq, &ndis_tproc, &ndis_tproc.np_p, RFHIGHPID, NDIS_KSTACK_PAGES, "ndis taskqueue"); } if (error == 0) { ndis_iproc.np_q = &ndis_itodo; ndis_iproc.np_state = NDIS_PSTATE_SLEEPING; error = kthread_create(ndis_runq, &ndis_iproc, &ndis_iproc.np_p, RFHIGHPID, NDIS_KSTACK_PAGES, "ndis swi"); } if (error) { while ((r = STAILQ_FIRST(&ndis_free)) != NULL) { STAILQ_REMOVE_HEAD(&ndis_free, link); free(r, M_DEVBUF); } return(error); } return(0); } static void ndis_destroy_kthreads() { struct ndis_req *r; /* Stop the threads. */ ndis_stop_thread(NDIS_TASKQUEUE); ndis_stop_thread(NDIS_SWI); /* Destroy request structures. */ while ((r = STAILQ_FIRST(&ndis_free)) != NULL) { STAILQ_REMOVE_HEAD(&ndis_free, link); free(r, M_DEVBUF); } return; } static void ndis_stop_thread(t) int t; { struct ndis_req *r; struct ndisqhead *q; struct proc *p; if (t == NDIS_TASKQUEUE) { q = &ndis_ttodo; p = ndis_tproc.np_p; } else { q = &ndis_itodo; p = ndis_iproc.np_p; } /* Create and post a special 'exit' job. */ mtx_pool_lock(ndis_mtxpool, ndis_thr_mtx); r = STAILQ_FIRST(&ndis_free); STAILQ_REMOVE_HEAD(&ndis_free, link); r->nr_func = NULL; r->nr_arg = NULL; r->nr_exit = TRUE; STAILQ_INSERT_TAIL(q, r, link); mtx_pool_unlock(ndis_mtxpool, ndis_thr_mtx); kthread_resume(p); /* wait for thread exit */ tsleep(r, PPAUSE|PCATCH, "ndisthrexit", hz * 60); /* Now empty the job list. */ mtx_pool_lock(ndis_mtxpool, ndis_thr_mtx); while ((r = STAILQ_FIRST(q)) != NULL) { STAILQ_REMOVE_HEAD(q, link); STAILQ_INSERT_HEAD(&ndis_free, r, link); } mtx_pool_unlock(ndis_mtxpool, ndis_thr_mtx); return; } static int ndis_enlarge_thrqueue(cnt) int cnt; { struct ndis_req *r; int i; for (i = 0; i < cnt; i++) { r = malloc(sizeof(struct ndis_req), M_DEVBUF, M_WAITOK); if (r == NULL) return(ENOMEM); mtx_pool_lock(ndis_mtxpool, ndis_thr_mtx); STAILQ_INSERT_HEAD(&ndis_free, r, link); ndis_jobs++; mtx_pool_unlock(ndis_mtxpool, ndis_thr_mtx); } return(0); } static int ndis_shrink_thrqueue(cnt) int cnt; { struct ndis_req *r; int i; for (i = 0; i < cnt; i++) { mtx_pool_lock(ndis_mtxpool, ndis_thr_mtx); r = STAILQ_FIRST(&ndis_free); if (r == NULL) { mtx_pool_unlock(ndis_mtxpool, ndis_thr_mtx); return(ENOMEM); } STAILQ_REMOVE_HEAD(&ndis_free, link); ndis_jobs--; mtx_pool_unlock(ndis_mtxpool, ndis_thr_mtx); free(r, M_DEVBUF); } return(0); } int ndis_unsched(func, arg, t) void (*func)(void *); void *arg; int t; { struct ndis_req *r; struct ndisqhead *q; struct proc *p; if (t == NDIS_TASKQUEUE) { q = &ndis_ttodo; p = ndis_tproc.np_p; } else { q = &ndis_itodo; p = ndis_iproc.np_p; } mtx_pool_lock(ndis_mtxpool, ndis_thr_mtx); STAILQ_FOREACH(r, q, link) { if (r->nr_func == func && r->nr_arg == arg) { STAILQ_REMOVE(q, r, ndis_req, link); STAILQ_INSERT_HEAD(&ndis_free, r, link); mtx_pool_unlock(ndis_mtxpool, ndis_thr_mtx); return(0); } } mtx_pool_unlock(ndis_mtxpool, ndis_thr_mtx); return(ENOENT); } int ndis_sched(func, arg, t) void (*func)(void *); void *arg; int t; { struct ndis_req *r; struct ndisqhead *q; struct proc *p; int s; if (t == NDIS_TASKQUEUE) { q = &ndis_ttodo; p = ndis_tproc.np_p; } else { q = &ndis_itodo; p = ndis_iproc.np_p; } mtx_pool_lock(ndis_mtxpool, ndis_thr_mtx); /* * Check to see if an instance of this job is already * pending. If so, don't bother queuing it again. */ STAILQ_FOREACH(r, q, link) { if (r->nr_func == func && r->nr_arg == arg) { mtx_pool_unlock(ndis_mtxpool, ndis_thr_mtx); return(0); } } r = STAILQ_FIRST(&ndis_free); if (r == NULL) { mtx_pool_unlock(ndis_mtxpool, ndis_thr_mtx); return(EAGAIN); } STAILQ_REMOVE_HEAD(&ndis_free, link); r->nr_func = func; r->nr_arg = arg; r->nr_exit = FALSE; STAILQ_INSERT_TAIL(q, r, link); if (t == NDIS_TASKQUEUE) s = ndis_tproc.np_state; else s = ndis_iproc.np_state; mtx_pool_unlock(ndis_mtxpool, ndis_thr_mtx); /* * Post the job, but only if the thread is actually blocked * on its own suspend call. If a driver queues up a job with * NdisScheduleWorkItem() which happens to do a KeWaitForObject(), * it may suspend there, and in that case we don't want to wake * it up until KeWaitForObject() gets woken up on its own. */ if (s == NDIS_PSTATE_SLEEPING) kthread_resume(p); return(0); } __stdcall static void ndis_sendrsrcavail_func(adapter) ndis_handle adapter; { return; } __stdcall static void ndis_status_func(adapter, status, sbuf, slen) ndis_handle adapter; ndis_status status; void *sbuf; uint32_t slen; { ndis_miniport_block *block; block = adapter; if (block->nmb_ifp->if_flags & IFF_DEBUG) device_printf (block->nmb_dev, "status: %x\n", status); return; } __stdcall static void ndis_statusdone_func(adapter) ndis_handle adapter; { ndis_miniport_block *block; block = adapter; if (block->nmb_ifp->if_flags & IFF_DEBUG) device_printf (block->nmb_dev, "status complete\n"); return; } __stdcall static void ndis_setdone_func(adapter, status) ndis_handle adapter; ndis_status status; { ndis_miniport_block *block; block = adapter; block->nmb_setstat = status; wakeup(&block->nmb_wkupdpctimer); return; } __stdcall static void ndis_getdone_func(adapter, status) ndis_handle adapter; ndis_status status; { ndis_miniport_block *block; block = adapter; block->nmb_getstat = status; wakeup(&block->nmb_wkupdpctimer); return; } __stdcall static void ndis_resetdone_func(adapter, status, addressingreset) ndis_handle adapter; ndis_status status; uint8_t addressingreset; { ndis_miniport_block *block; block = adapter; if (block->nmb_ifp->if_flags & IFF_DEBUG) device_printf (block->nmb_dev, "reset done...\n"); wakeup(block->nmb_ifp); return; } int ndis_create_sysctls(arg) void *arg; { struct ndis_softc *sc; ndis_cfg *vals; char buf[256]; if (arg == NULL) return(EINVAL); sc = arg; vals = sc->ndis_regvals; TAILQ_INIT(&sc->ndis_cfglist_head); /* Create the sysctl tree. */ sc->ndis_tree = SYSCTL_ADD_NODE(&sc->ndis_ctx, SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, device_get_nameunit(sc->ndis_dev), CTLFLAG_RD, 0, device_get_desc(sc->ndis_dev)); /* Add the driver-specific registry keys. */ vals = sc->ndis_regvals; while(1) { if (vals->nc_cfgkey == NULL) break; if (vals->nc_idx != sc->ndis_devidx) { vals++; continue; } SYSCTL_ADD_STRING(&sc->ndis_ctx, SYSCTL_CHILDREN(sc->ndis_tree), OID_AUTO, vals->nc_cfgkey, CTLFLAG_RW, vals->nc_val, sizeof(vals->nc_val), vals->nc_cfgdesc); vals++; } /* Now add a couple of builtin keys. */ /* * Environment can be either Windows (0) or WindowsNT (1). * We qualify as the latter. */ ndis_add_sysctl(sc, "Environment", "Windows environment", "1", CTLFLAG_RD); /* NDIS version should be 5.1. */ ndis_add_sysctl(sc, "NdisVersion", "NDIS API Version", "0x00050001", CTLFLAG_RD); /* Bus type (PCI, PCMCIA, etc...) */ sprintf(buf, "%d", (int)sc->ndis_iftype); ndis_add_sysctl(sc, "BusType", "Bus Type", buf, CTLFLAG_RD); if (sc->ndis_res_io != NULL) { sprintf(buf, "0x%lx", rman_get_start(sc->ndis_res_io)); ndis_add_sysctl(sc, "IOBaseAddress", "Base I/O Address", buf, CTLFLAG_RD); } if (sc->ndis_irq != NULL) { sprintf(buf, "%lu", rman_get_start(sc->ndis_irq)); ndis_add_sysctl(sc, "InterruptNumber", "Interrupt Number", buf, CTLFLAG_RD); } return(0); } int ndis_add_sysctl(arg, key, desc, val, flag) void *arg; char *key; char *desc; char *val; int flag; { struct ndis_softc *sc; struct ndis_cfglist *cfg; char descstr[256]; sc = arg; cfg = malloc(sizeof(struct ndis_cfglist), M_DEVBUF, M_NOWAIT|M_ZERO); if (cfg == NULL) return(ENOMEM); cfg->ndis_cfg.nc_cfgkey = strdup(key, M_DEVBUF); if (desc == NULL) { snprintf(descstr, sizeof(descstr), "%s (dynamic)", key); cfg->ndis_cfg.nc_cfgdesc = strdup(descstr, M_DEVBUF); } else cfg->ndis_cfg.nc_cfgdesc = strdup(desc, M_DEVBUF); strcpy(cfg->ndis_cfg.nc_val, val); TAILQ_INSERT_TAIL(&sc->ndis_cfglist_head, cfg, link); SYSCTL_ADD_STRING(&sc->ndis_ctx, SYSCTL_CHILDREN(sc->ndis_tree), OID_AUTO, cfg->ndis_cfg.nc_cfgkey, flag, cfg->ndis_cfg.nc_val, sizeof(cfg->ndis_cfg.nc_val), cfg->ndis_cfg.nc_cfgdesc); return(0); } int ndis_flush_sysctls(arg) void *arg; { struct ndis_softc *sc; struct ndis_cfglist *cfg; sc = arg; while (!TAILQ_EMPTY(&sc->ndis_cfglist_head)) { cfg = TAILQ_FIRST(&sc->ndis_cfglist_head); TAILQ_REMOVE(&sc->ndis_cfglist_head, cfg, link); free(cfg->ndis_cfg.nc_cfgkey, M_DEVBUF); free(cfg->ndis_cfg.nc_cfgdesc, M_DEVBUF); free(cfg, M_DEVBUF); } return(0); } void ndis_return_packet(buf, arg) void *buf; /* not used */ void *arg; { struct ndis_softc *sc; ndis_handle adapter; ndis_packet *p; __stdcall ndis_return_handler returnfunc; if (arg == NULL) return; p = arg; /* Decrement refcount. */ p->np_refcnt--; /* Release packet when refcount hits zero, otherwise return. */ if (p->np_refcnt) return; sc = p->np_softc; returnfunc = sc->ndis_chars.nmc_return_packet_func; adapter = sc->ndis_block.nmb_miniportadapterctx; if (adapter != NULL) returnfunc(adapter, p); return; } void ndis_free_bufs(b0) ndis_buffer *b0; { ndis_buffer *next; if (b0 == NULL) return; while(b0 != NULL) { next = b0->nb_next; uma_zfree (ndis_buffer_zone, b0); b0 = next; } return; } void ndis_free_packet(p) ndis_packet *p; { if (p == NULL) return; ndis_free_bufs(p->np_private.npp_head); uma_zfree(ndis_packet_zone, p); return; } int ndis_convert_res(arg) void *arg; { struct ndis_softc *sc; ndis_resource_list *rl = NULL; cm_partial_resource_desc *prd = NULL; ndis_miniport_block *block; device_t dev; struct resource_list *brl; struct resource_list brl_rev; struct resource_list_entry *brle, *n; int error = 0; sc = arg; block = &sc->ndis_block; dev = sc->ndis_dev; SLIST_INIT(&brl_rev); rl = malloc(sizeof(ndis_resource_list) + (sizeof(cm_partial_resource_desc) * (sc->ndis_rescnt - 1)), M_DEVBUF, M_NOWAIT|M_ZERO); if (rl == NULL) return(ENOMEM); rl->cprl_version = 5; rl->cprl_version = 1; rl->cprl_count = sc->ndis_rescnt; prd = rl->cprl_partial_descs; brl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev); if (brl != NULL) { /* * We have a small problem. Some PCI devices have * multiple I/O ranges. Windows orders them starting * from lowest numbered BAR to highest. We discover * them in that order too, but insert them into a singly * linked list head first, which means when time comes * to traverse the list, we enumerate them in reverse * order. This screws up some drivers which expect the * BARs to be in ascending order so that they can choose * the "first" one as their register space. Unfortunately, * in order to fix this, we have to create our own * temporary list with the entries in reverse order. */ SLIST_FOREACH(brle, brl, link) { n = malloc(sizeof(struct resource_list_entry), M_TEMP, M_NOWAIT); if (n == NULL) { error = ENOMEM; goto bad; } bcopy((char *)brle, (char *)n, sizeof(struct resource_list_entry)); SLIST_INSERT_HEAD(&brl_rev, n, link); } SLIST_FOREACH(brle, &brl_rev, link) { switch (brle->type) { case SYS_RES_IOPORT: prd->cprd_type = CmResourceTypePort; prd->cprd_flags = CM_RESOURCE_PORT_IO; prd->cprd_sharedisp = CmResourceShareDeviceExclusive; prd->u.cprd_port.cprd_start.np_quad = brle->start; prd->u.cprd_port.cprd_len = brle->count; break; case SYS_RES_MEMORY: prd->cprd_type = CmResourceTypeMemory; prd->cprd_flags = CM_RESOURCE_MEMORY_READ_WRITE; prd->cprd_sharedisp = CmResourceShareDeviceExclusive; prd->u.cprd_port.cprd_start.np_quad = brle->start; prd->u.cprd_port.cprd_len = brle->count; break; case SYS_RES_IRQ: prd->cprd_type = CmResourceTypeInterrupt; prd->cprd_flags = 0; prd->cprd_sharedisp = CmResourceShareDeviceExclusive; prd->u.cprd_intr.cprd_level = brle->start; prd->u.cprd_intr.cprd_vector = brle->start; prd->u.cprd_intr.cprd_affinity = 0; break; default: break; } prd++; } } block->nmb_rlist = rl; bad: while (!SLIST_EMPTY(&brl_rev)) { n = SLIST_FIRST(&brl_rev); SLIST_REMOVE_HEAD(&brl_rev, link); free (n, M_TEMP); } return(error); } /* * Map an NDIS packet to an mbuf list. When an NDIS driver receives a * packet, it will hand it to us in the form of an ndis_packet, * which we need to convert to an mbuf that is then handed off * to the stack. Note: we configure the mbuf list so that it uses * the memory regions specified by the ndis_buffer structures in * the ndis_packet as external storage. In most cases, this will * point to a memory region allocated by the driver (either by * ndis_malloc_withtag() or ndis_alloc_sharedmem()). We expect * the driver to handle free()ing this region for is, so we set up * a dummy no-op free handler for it. */ int ndis_ptom(m0, p) struct mbuf **m0; ndis_packet *p; { struct mbuf *m, *prev = NULL; ndis_buffer *buf; ndis_packet_private *priv; uint32_t totlen = 0; if (p == NULL || m0 == NULL) return(EINVAL); priv = &p->np_private; buf = priv->npp_head; p->np_refcnt = 0; for (buf = priv->npp_head; buf != NULL; buf = buf->nb_next) { if (buf == priv->npp_head) MGETHDR(m, M_DONTWAIT, MT_HEADER); else MGET(m, M_DONTWAIT, MT_DATA); if (m == NULL) { m_freem(*m0); *m0 = NULL; return(ENOBUFS); } m->m_len = buf->nb_bytecount; m->m_data = MDL_VA(buf); MEXTADD(m, m->m_data, m->m_len, ndis_return_packet, p, 0, EXT_NDIS); p->np_refcnt++; totlen += m->m_len; if (m->m_flags & MT_HEADER) *m0 = m; else prev->m_next = m; prev = m; } (*m0)->m_pkthdr.len = totlen; return(0); } /* * Create an mbuf chain from an NDIS packet chain. * This is used mainly when transmitting packets, where we need * to turn an mbuf off an interface's send queue and transform it * into an NDIS packet which will be fed into the NDIS driver's * send routine. * * NDIS packets consist of two parts: an ndis_packet structure, * which is vaguely analagous to the pkthdr portion of an mbuf, * and one or more ndis_buffer structures, which define the * actual memory segments in which the packet data resides. * We need to allocate one ndis_buffer for each mbuf in a chain, * plus one ndis_packet as the header. */ int ndis_mtop(m0, p) struct mbuf *m0; ndis_packet **p; { struct mbuf *m; ndis_buffer *buf = NULL, *prev = NULL; ndis_packet_private *priv; if (p == NULL || m0 == NULL) return(EINVAL); /* If caller didn't supply a packet, make one. */ if (*p == NULL) { *p = uma_zalloc(ndis_packet_zone, M_NOWAIT|M_ZERO); if (*p == NULL) return(ENOMEM); } priv = &(*p)->np_private; priv->npp_totlen = m0->m_pkthdr.len; priv->npp_packetooboffset = offsetof(ndis_packet, np_oob); priv->npp_ndispktflags = NDIS_PACKET_ALLOCATED_BY_NDIS; for (m = m0; m != NULL; m = m->m_next) { if (m->m_len == 0) continue; buf = uma_zalloc(ndis_buffer_zone, M_NOWAIT | M_ZERO); if (buf == NULL) { ndis_free_packet(*p); *p = NULL; return(ENOMEM); } MDL_INIT(buf, m->m_data, m->m_len); if (priv->npp_head == NULL) priv->npp_head = buf; else prev->nb_next = buf; prev = buf; } priv->npp_tail = buf; priv->npp_totlen = m0->m_pkthdr.len; return(0); } int ndis_get_supported_oids(arg, oids, oidcnt) void *arg; ndis_oid **oids; int *oidcnt; { int len, rval; ndis_oid *o; if (arg == NULL || oids == NULL || oidcnt == NULL) return(EINVAL); len = 0; ndis_get_info(arg, OID_GEN_SUPPORTED_LIST, NULL, &len); o = malloc(len, M_DEVBUF, M_NOWAIT); if (o == NULL) return(ENOMEM); rval = ndis_get_info(arg, OID_GEN_SUPPORTED_LIST, o, &len); if (rval) { free(o, M_DEVBUF); return(rval); } *oids = o; *oidcnt = len / 4; return(0); } int ndis_set_info(arg, oid, buf, buflen) void *arg; ndis_oid oid; void *buf; int *buflen; { struct ndis_softc *sc; ndis_status rval; ndis_handle adapter; __stdcall ndis_setinfo_handler setfunc; uint32_t byteswritten = 0, bytesneeded = 0; int error; sc = arg; NDIS_LOCK(sc); setfunc = sc->ndis_chars.nmc_setinfo_func; adapter = sc->ndis_block.nmb_miniportadapterctx; NDIS_UNLOCK(sc); if (adapter == NULL || setfunc == NULL) return(ENXIO); rval = setfunc(adapter, oid, buf, *buflen, &byteswritten, &bytesneeded); if (rval == NDIS_STATUS_PENDING) { PROC_LOCK(curthread->td_proc); error = msleep(&sc->ndis_block.nmb_wkupdpctimer, &curthread->td_proc->p_mtx, PPAUSE|PDROP, "ndisset", 5 * hz); rval = sc->ndis_block.nmb_setstat; } if (byteswritten) *buflen = byteswritten; if (bytesneeded) *buflen = bytesneeded; if (rval == NDIS_STATUS_INVALID_LENGTH) return(ENOSPC); if (rval == NDIS_STATUS_INVALID_OID) return(EINVAL); if (rval == NDIS_STATUS_NOT_SUPPORTED || rval == NDIS_STATUS_NOT_ACCEPTED) return(ENOTSUP); if (rval != NDIS_STATUS_SUCCESS) return(ENODEV); return(0); } typedef void (*ndis_senddone_func)(ndis_handle, ndis_packet *, ndis_status); int ndis_send_packets(arg, packets, cnt) void *arg; ndis_packet **packets; int cnt; { struct ndis_softc *sc; ndis_handle adapter; __stdcall ndis_sendmulti_handler sendfunc; __stdcall ndis_senddone_func senddonefunc; int i; ndis_packet *p; sc = arg; adapter = sc->ndis_block.nmb_miniportadapterctx; if (adapter == NULL) return(ENXIO); sendfunc = sc->ndis_chars.nmc_sendmulti_func; senddonefunc = sc->ndis_block.nmb_senddone_func; sendfunc(adapter, packets, cnt); for (i = 0; i < cnt; i++) { p = packets[i]; /* * Either the driver already handed the packet to * ndis_txeof() due to a failure, or it wants to keep * it and release it asynchronously later. Skip to the * next one. */ if (p == NULL || p->np_oob.npo_status == NDIS_STATUS_PENDING) continue; senddonefunc(&sc->ndis_block, p, p->np_oob.npo_status); } return(0); } int ndis_send_packet(arg, packet) void *arg; ndis_packet *packet; { struct ndis_softc *sc; ndis_handle adapter; ndis_status status; __stdcall ndis_sendsingle_handler sendfunc; __stdcall ndis_senddone_func senddonefunc; sc = arg; adapter = sc->ndis_block.nmb_miniportadapterctx; if (adapter == NULL) return(ENXIO); sendfunc = sc->ndis_chars.nmc_sendsingle_func; senddonefunc = sc->ndis_block.nmb_senddone_func; status = sendfunc(adapter, packet, packet->np_private.npp_flags); if (status == NDIS_STATUS_PENDING) return(0); senddonefunc(&sc->ndis_block, packet, status); return(0); } int ndis_init_dma(arg) void *arg; { struct ndis_softc *sc; int i, error; sc = arg; sc->ndis_tmaps = malloc(sizeof(bus_dmamap_t) * sc->ndis_maxpkts, M_DEVBUF, M_NOWAIT|M_ZERO); if (sc->ndis_tmaps == NULL) return(ENOMEM); for (i = 0; i < sc->ndis_maxpkts; i++) { error = bus_dmamap_create(sc->ndis_ttag, 0, &sc->ndis_tmaps[i]); if (error) { free(sc->ndis_tmaps, M_DEVBUF); return(ENODEV); } } return(0); } int ndis_destroy_dma(arg) void *arg; { struct ndis_softc *sc; struct mbuf *m; ndis_packet *p = NULL; int i; sc = arg; for (i = 0; i < sc->ndis_maxpkts; i++) { if (sc->ndis_txarray[i] != NULL) { p = sc->ndis_txarray[i]; m = (struct mbuf *)p->np_rsvd[1]; if (m != NULL) m_freem(m); ndis_free_packet(sc->ndis_txarray[i]); } bus_dmamap_destroy(sc->ndis_ttag, sc->ndis_tmaps[i]); } free(sc->ndis_tmaps, M_DEVBUF); bus_dma_tag_destroy(sc->ndis_ttag); return(0); } int ndis_reset_nic(arg) void *arg; { struct ndis_softc *sc; ndis_handle adapter; __stdcall ndis_reset_handler resetfunc; uint8_t addressing_reset; struct ifnet *ifp; int rval; sc = arg; ifp = &sc->arpcom.ac_if; NDIS_LOCK(sc); adapter = sc->ndis_block.nmb_miniportadapterctx; resetfunc = sc->ndis_chars.nmc_reset_func; NDIS_UNLOCK(sc); if (adapter == NULL || resetfunc == NULL) return(EIO); rval = resetfunc(&addressing_reset, adapter); if (rval == NDIS_STATUS_PENDING) { PROC_LOCK(curthread->td_proc); msleep(sc, &curthread->td_proc->p_mtx, PPAUSE|PDROP, "ndisrst", 0); } return(0); } int ndis_halt_nic(arg) void *arg; { struct ndis_softc *sc; ndis_handle adapter; __stdcall ndis_halt_handler haltfunc; struct ifnet *ifp; sc = arg; ifp = &sc->arpcom.ac_if; NDIS_LOCK(sc); adapter = sc->ndis_block.nmb_miniportadapterctx; if (adapter == NULL) { NDIS_UNLOCK(sc); return(EIO); } /* * The adapter context is only valid after the init * handler has been called, and is invalid once the * halt handler has been called. */ haltfunc = sc->ndis_chars.nmc_halt_func; NDIS_UNLOCK(sc); haltfunc(adapter); NDIS_LOCK(sc); sc->ndis_block.nmb_miniportadapterctx = NULL; NDIS_UNLOCK(sc); return(0); } int ndis_shutdown_nic(arg) void *arg; { struct ndis_softc *sc; ndis_handle adapter; __stdcall ndis_shutdown_handler shutdownfunc; sc = arg; NDIS_LOCK(sc); adapter = sc->ndis_block.nmb_miniportadapterctx; shutdownfunc = sc->ndis_chars.nmc_shutdown_handler; NDIS_UNLOCK(sc); if (adapter == NULL || shutdownfunc == NULL) return(EIO); if (sc->ndis_chars.nmc_rsvd0 == NULL) shutdownfunc(adapter); else shutdownfunc(sc->ndis_chars.nmc_rsvd0); ndis_shrink_thrqueue(8); TAILQ_REMOVE(&ndis_devhead, &sc->ndis_block, link); return(0); } int ndis_init_nic(arg) void *arg; { struct ndis_softc *sc; ndis_miniport_block *block; __stdcall ndis_init_handler initfunc; ndis_status status, openstatus = 0; ndis_medium mediumarray[NdisMediumMax]; uint32_t chosenmedium, i; if (arg == NULL) return(EINVAL); sc = arg; NDIS_LOCK(sc); block = &sc->ndis_block; initfunc = sc->ndis_chars.nmc_init_func; NDIS_UNLOCK(sc); TAILQ_INIT(&block->nmb_timerlist); for (i = 0; i < NdisMediumMax; i++) mediumarray[i] = i; status = initfunc(&openstatus, &chosenmedium, mediumarray, NdisMediumMax, block, block); /* * If the init fails, blow away the other exported routines * we obtained from the driver so we can't call them later. * If the init failed, none of these will work. */ if (status != NDIS_STATUS_SUCCESS) { NDIS_LOCK(sc); sc->ndis_block.nmb_miniportadapterctx = NULL; NDIS_UNLOCK(sc); return(ENXIO); } return(0); } void ndis_enable_intr(arg) void *arg; { struct ndis_softc *sc; ndis_handle adapter; __stdcall ndis_enable_interrupts_handler intrenbfunc; sc = arg; NDIS_LOCK(sc); adapter = sc->ndis_block.nmb_miniportadapterctx; intrenbfunc = sc->ndis_chars.nmc_enable_interrupts_func; NDIS_UNLOCK(sc); if (adapter == NULL || intrenbfunc == NULL) return; intrenbfunc(adapter); return; } void ndis_disable_intr(arg) void *arg; { struct ndis_softc *sc; ndis_handle adapter; __stdcall ndis_disable_interrupts_handler intrdisfunc; sc = arg; NDIS_LOCK(sc); adapter = sc->ndis_block.nmb_miniportadapterctx; intrdisfunc = sc->ndis_chars.nmc_disable_interrupts_func; NDIS_UNLOCK(sc); if (adapter == NULL || intrdisfunc == NULL) return; intrdisfunc(adapter); return; } int ndis_isr(arg, ourintr, callhandler) void *arg; int *ourintr; int *callhandler; { struct ndis_softc *sc; ndis_handle adapter; __stdcall ndis_isr_handler isrfunc; uint8_t accepted, queue; if (arg == NULL || ourintr == NULL || callhandler == NULL) return(EINVAL); sc = arg; NDIS_LOCK(sc); adapter = sc->ndis_block.nmb_miniportadapterctx; isrfunc = sc->ndis_chars.nmc_isr_func; NDIS_UNLOCK(sc); if (adapter == NULL || isrfunc == NULL) return(ENXIO); isrfunc(&accepted, &queue, adapter); *ourintr = accepted; *callhandler = queue; return(0); } int ndis_intrhand(arg) void *arg; { struct ndis_softc *sc; ndis_handle adapter; __stdcall ndis_interrupt_handler intrfunc; if (arg == NULL) return(EINVAL); sc = arg; NDIS_LOCK(sc); adapter = sc->ndis_block.nmb_miniportadapterctx; intrfunc = sc->ndis_chars.nmc_interrupt_func; NDIS_UNLOCK(sc); if (adapter == NULL || intrfunc == NULL) return(EINVAL); intrfunc(adapter); return(0); } int ndis_get_info(arg, oid, buf, buflen) void *arg; ndis_oid oid; void *buf; int *buflen; { struct ndis_softc *sc; ndis_status rval; ndis_handle adapter; __stdcall ndis_queryinfo_handler queryfunc; uint32_t byteswritten = 0, bytesneeded = 0; int error; sc = arg; NDIS_LOCK(sc); queryfunc = sc->ndis_chars.nmc_queryinfo_func; adapter = sc->ndis_block.nmb_miniportadapterctx; NDIS_UNLOCK(sc); if (adapter == NULL || queryfunc == NULL) return(ENXIO); rval = queryfunc(adapter, oid, buf, *buflen, &byteswritten, &bytesneeded); /* Wait for requests that block. */ if (rval == NDIS_STATUS_PENDING) { PROC_LOCK(curthread->td_proc); error = msleep(&sc->ndis_block.nmb_wkupdpctimer, &curthread->td_proc->p_mtx, PPAUSE|PDROP, "ndisget", 5 * hz); rval = sc->ndis_block.nmb_getstat; } if (byteswritten) *buflen = byteswritten; if (bytesneeded) *buflen = bytesneeded; if (rval == NDIS_STATUS_INVALID_LENGTH || rval == NDIS_STATUS_BUFFER_TOO_SHORT) return(ENOSPC); if (rval == NDIS_STATUS_INVALID_OID) return(EINVAL); if (rval == NDIS_STATUS_NOT_SUPPORTED || rval == NDIS_STATUS_NOT_ACCEPTED) return(ENOTSUP); if (rval != NDIS_STATUS_SUCCESS) return(ENODEV); return(0); } int ndis_unload_driver(arg) void *arg; { struct ndis_softc *sc; sc = arg; free(sc->ndis_block.nmb_rlist, M_DEVBUF); ndis_flush_sysctls(sc); ndis_shrink_thrqueue(8); TAILQ_REMOVE(&ndis_devhead, &sc->ndis_block, link); return(0); } #define NDIS_LOADED htonl(0x42534F44) int ndis_load_driver(img, arg) vm_offset_t img; void *arg; { __stdcall driver_entry entry; image_optional_header opt_hdr; image_import_descriptor imp_desc; ndis_unicode_string dummystr; ndis_miniport_block *block; ndis_status status; int idx; uint32_t *ptr; struct ndis_softc *sc; sc = arg; /* * Only perform the relocation/linking phase once * since the binary image may be shared among multiple * device instances. */ ptr = (uint32_t *)(img + 8); if (*ptr != NDIS_LOADED) { /* Perform text relocation */ if (pe_relocate(img)) return(ENOEXEC); /* Dynamically link the NDIS.SYS routines -- required. */ if (pe_patch_imports(img, "NDIS", ndis_functbl)) return(ENOEXEC); /* Dynamically link the HAL.dll routines -- also required. */ if (pe_patch_imports(img, "HAL", hal_functbl)) return(ENOEXEC); /* Dynamically link ntoskrnl.exe -- optional. */ if (pe_get_import_descriptor(img, &imp_desc, "ntoskrnl") == 0) { if (pe_patch_imports(img, "ntoskrnl", ntoskrnl_functbl)) return(ENOEXEC); } *ptr = NDIS_LOADED; } /* Locate the driver entry point */ pe_get_optional_header(img, &opt_hdr); entry = (driver_entry)pe_translate_addr(img, opt_hdr.ioh_entryaddr); dummystr.nus_len = strlen(NDIS_DUMMY_PATH) * 2; dummystr.nus_maxlen = strlen(NDIS_DUMMY_PATH) * 2; dummystr.nus_buf = NULL; ndis_ascii_to_unicode(NDIS_DUMMY_PATH, &dummystr.nus_buf); /* * Now that we have the miniport driver characteristics, * create an NDIS block and call the init handler. * This will cause the driver to try to probe for * a device. */ block = &sc->ndis_block; ptr = (uint32_t *)block; for (idx = 0; idx < sizeof(ndis_miniport_block) / 4; idx++) { *ptr = idx | 0xdead0000; ptr++; } block->nmb_signature = (void *)0xcafebabe; block->nmb_setdone_func = ndis_setdone_func; block->nmb_querydone_func = ndis_getdone_func; block->nmb_status_func = ndis_status_func; block->nmb_statusdone_func = ndis_statusdone_func; block->nmb_resetdone_func = ndis_resetdone_func; block->nmb_sendrsrc_func = ndis_sendrsrcavail_func; block->nmb_ifp = &sc->arpcom.ac_if; block->nmb_dev = sc->ndis_dev; block->nmb_img = img; block->nmb_devobj.do_rsvd = block; /* * Now call the DriverEntry() routine. This will cause * a callout to the NdisInitializeWrapper() and * NdisMRegisterMiniport() routines. */ status = entry(&block->nmb_devobj, &dummystr); free (dummystr.nus_buf, M_DEVBUF); if (status != NDIS_STATUS_SUCCESS) return(ENODEV); ndis_enlarge_thrqueue(8); TAILQ_INSERT_TAIL(&ndis_devhead, block, link); return(0); }