/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1997-2014 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
-/* Copyright (c) 1997, 1998 Apple Computer, Inc. All Rights Reserved */
/*
* @(#)ndrv.c 1.1 (MacOSX) 6/10/43
* Justin Walker, 970604
/*
* PF_NDRV allows raw access to a specified network device, directly
* with a socket. Expected use involves a socket option to request
- * protocol packets. This lets ndrv_output() call dlil_output(), and
+ * protocol packets. This lets ndrv_output() call ifnet_output(), and
* lets DLIL find the proper recipient for incoming packets.
* The purpose here is for user-mode protocol implementation.
* Note that "pure raw access" will still be accomplished with BPF.
*
* In addition to the former use, when combined with socket NKEs,
* PF_NDRV permits a fairly flexible mechanism for implementing
- * strange protocol support. One of the main ones will be the
- * BlueBox/Classic Shared IP Address support.
+ * strange protocol support.
*/
#include <mach/mach_types.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/ioctl.h>
+#include <sys/sysctl.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <sys/proc.h>
#include <kern/queue.h>
#include <net/ndrv.h>
-#include <net/netisr.h>
#include <net/route.h>
#include <net/if_llc.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/ndrv_var.h>
+#include <net/dlil.h>
#if INET
#include <netinet/in.h>
#endif
#include <netinet/if_ether.h>
-#if NS
-#include <netns/ns.h>
-#include <netns/ns_if.h>
-#endif
-
-#if ISO
-#include <netiso/argo_debug.h>
-#include <netiso/iso.h>
-#include <netiso/iso_var.h>
-#include <netiso/iso_snpac.h>
-#endif
-
-#if LLC
-#include <netccitt/dll.h>
-#include <netccitt/llc_var.h>
-#endif
+static unsigned int ndrv_multi_max_count = NDRV_DMUX_MAX_DESCR;
+SYSCTL_UINT(_net, OID_AUTO, ndrv_multi_max_count, CTLFLAG_RW | CTLFLAG_LOCKED,
+ &ndrv_multi_max_count, 0, "Number of allowed multicast addresses per NRDV socket");
-#include <machine/spl.h>
+/*
+ * The locking strategy relies on the PF_NRDRV domain mutex that protects both the
+ * PCB list "ndrvl" and the sockets themselves
+ */
-int ndrv_do_detach(struct ndrv_cb *);
-int ndrv_do_disconnect(struct ndrv_cb *);
-struct ndrv_cb *ndrv_find_tag(unsigned int);
-void ndrv_read_event(struct socket* inSo, caddr_t ref, int waitf);
-int ndrv_setspec(struct ndrv_cb *np, struct sockopt *sopt);
-int ndrv_delspec(struct ndrv_cb *);
-int ndrv_to_dlil_demux(struct ndrv_demux_desc* ndrv, struct dlil_demux_desc* dlil);
-void ndrv_handle_ifp_detach(u_long family, short unit);
+static int ndrv_do_detach(struct ndrv_cb *);
+static int ndrv_do_disconnect(struct ndrv_cb *);
+static struct ndrv_cb *ndrv_find_inbound(struct ifnet *ifp, u_int32_t protocol_family);
+static int ndrv_setspec(struct ndrv_cb *np, struct sockopt *sopt);
+static int ndrv_delspec(struct ndrv_cb *);
+static int ndrv_to_ifnet_demux(struct ndrv_demux_desc* ndrv, struct ifnet_demux_desc* ifdemux);
+static void ndrv_handle_ifp_detach(u_int32_t family, short unit);
+static int ndrv_do_add_multicast(struct ndrv_cb *np, struct sockopt *sopt);
+static int ndrv_do_remove_multicast(struct ndrv_cb *np, struct sockopt *sopt);
+static struct ndrv_multiaddr* ndrv_have_multicast(struct ndrv_cb *np, struct sockaddr* addr);
+static void ndrv_remove_all_multicast(struct ndrv_cb *np);
+static void ndrv_dominit(struct domain *);
-unsigned long ndrv_sendspace = NDRVSNDQ;
-unsigned long ndrv_recvspace = NDRVRCVQ;
-struct ndrv_cb ndrvl; /* Head of controlblock list */
+u_int32_t ndrv_sendspace = NDRVSNDQ;
+u_int32_t ndrv_recvspace = NDRVRCVQ;
+TAILQ_HEAD(, ndrv_cb) ndrvl = TAILQ_HEAD_INITIALIZER(ndrvl);
-struct domain ndrvdomain;
-struct protosw ndrvsw;
-static struct socket* ndrv_so;
+static struct domain *ndrvdomain = NULL;
+extern struct domain ndrvdomain_s;
+#define NDRV_PROTODEMUX_COUNT 10
/*
- * Protocol init function for NDRV protocol
- * Init the control block list.
+ * Verify these values match.
+ * To keep clients from including dlil.h, we define
+ * these values independently in ndrv.h. They must
+ * match or a conversion function must be written.
*/
-void
-ndrv_init()
-{
- int retval;
- struct kev_request kev_request;
-
- ndrvl.nd_next = ndrvl.nd_prev = &ndrvl;
-
- /* Create a PF_SYSTEM socket so we can listen for events */
- retval = socreate(PF_SYSTEM, &ndrv_so, SOCK_RAW, SYSPROTO_EVENT);
- if (retval != 0 || ndrv_so == NULL)
- retval = KERN_FAILURE;
-
- /* Install a callback function for the socket */
- ndrv_so->so_rcv.sb_flags |= SB_NOTIFY|SB_UPCALL;
- ndrv_so->so_upcall = ndrv_read_event;
- ndrv_so->so_upcallarg = NULL;
-
- /* Configure the socket to receive the events we're interested in */
- kev_request.vendor_code = KEV_VENDOR_APPLE;
- kev_request.kev_class = KEV_NETWORK_CLASS;
- kev_request.kev_subclass = KEV_DL_SUBCLASS;
- retval = ndrv_so->so_proto->pr_usrreqs->pru_control(ndrv_so, SIOCSKEVFILT, (caddr_t)&kev_request, 0, 0);
- if (retval != 0)
- {
- /*
- * We will not get attaching or detaching events in this case.
- * We should probably prevent any sockets from binding so we won't
- * panic later if the interface goes away.
- */
- log(LOG_WARNING, "PF_NDRV: ndrv_init - failed to set event filter (%d)",
- retval);
- }
-}
+#if NDRV_DEMUXTYPE_ETHERTYPE != DLIL_DESC_ETYPE2
+#error NDRV_DEMUXTYPE_ETHERTYPE must match DLIL_DESC_ETYPE2
+#endif
+#if NDRV_DEMUXTYPE_SAP != DLIL_DESC_SAP
+#error NDRV_DEMUXTYPE_SAP must match DLIL_DESC_SAP
+#endif
+#if NDRV_DEMUXTYPE_SNAP != DLIL_DESC_SNAP
+#error NDRV_DEMUXTYPE_SNAP must match DLIL_DESC_SNAP
+#endif
/*
* Protocol output - Called to output a raw network packet directly
* to the driver.
*/
-int
-ndrv_output(register struct mbuf *m, register struct socket *so)
+static int
+ndrv_output(struct mbuf *m, struct socket *so)
{
- register struct ndrv_cb *np = sotondrvcb(so);
- register struct ifnet *ifp = np->nd_if;
- extern void kprintf(const char *, ...);
- int result = 0;
+ struct ndrv_cb *np = sotondrvcb(so);
+ struct ifnet *ifp = np->nd_if;
+ int result = 0;
#if NDRV_DEBUG
- kprintf("NDRV output: %x, %x, %x\n", m, so, np);
+ printf("NDRV output: %x, %x, %x\n", m, so, np);
#endif
/*
* No header is a format error
*/
- if ((m->m_flags&M_PKTHDR) == 0)
- return(EINVAL);
+ if ((m->m_flags & M_PKTHDR) == 0) {
+ return EINVAL;
+ }
+
+ /* Unlock before calling ifnet_output */
+ socket_unlock(so, 0);
/*
- * Call DLIL if we can. DLIL is much safer than calling the
- * ifp directly.
- */
- if (np->nd_tag != 0)
- result = dlil_output(np->nd_tag, m, (caddr_t)NULL,
- (struct sockaddr*)NULL, 1);
- else if (np->nd_send_tag != 0)
- result = dlil_output(np->nd_send_tag, m, (caddr_t)NULL,
- (struct sockaddr*)NULL, 1);
- else
- result = ENXIO;
- return (result);
+ * Call DLIL if we can. DLIL is much safer than calling the
+ * ifp directly.
+ */
+ result = ifnet_output_raw(ifp, np->nd_proto_family, m);
+
+ socket_lock(so, 0);
+
+ return result;
}
/* Our input routine called from DLIL */
-int
-ndrv_input(struct mbuf *m,
- char *frame_header,
- struct ifnet *ifp,
- u_long dl_tag,
- int sync_ok)
+static errno_t
+ndrv_input(
+ ifnet_t ifp,
+ protocol_family_t proto_family,
+ mbuf_t m,
+ char *frame_header)
{
struct socket *so;
- struct sockaddr_dl ndrvsrc = {sizeof (struct sockaddr_dl), AF_NDRV};
- register struct ndrv_cb *np;
+ struct sockaddr_dl ndrvsrc;
+ struct ndrv_cb *np;
+ int error = 0;
+ ndrvsrc.sdl_len = sizeof(struct sockaddr_dl);
+ ndrvsrc.sdl_family = AF_NDRV;
+ ndrvsrc.sdl_index = 0;
- /* move packet from if queue to socket */
+ /* move packet from if queue to socket */
/* Should be media-independent */
- ndrvsrc.sdl_type = IFT_ETHER;
- ndrvsrc.sdl_nlen = 0;
- ndrvsrc.sdl_alen = 6;
- ndrvsrc.sdl_slen = 0;
- bcopy(frame_header, &ndrvsrc.sdl_data, 6);
-
- np = ndrv_find_tag(dl_tag);
- if (np == NULL)
- {
- return(ENOENT);
+ ndrvsrc.sdl_type = IFT_ETHER;
+ ndrvsrc.sdl_nlen = 0;
+ ndrvsrc.sdl_alen = 6;
+ ndrvsrc.sdl_slen = 0;
+ bcopy(frame_header, &ndrvsrc.sdl_data, 6);
+
+ /* prepend the frame header */
+ m = m_prepend(m, ifnet_hdrlen(ifp), M_NOWAIT);
+ if (m == NULL) {
+ return EJUSTRETURN;
+ }
+ bcopy(frame_header, m->m_data, ifnet_hdrlen(ifp));
+
+ /*
+ * We need to take the domain mutex before the list RW lock
+ */
+ LCK_MTX_ASSERT(ndrvdomain->dom_mtx, LCK_MTX_ASSERT_NOTOWNED);
+ lck_mtx_lock(ndrvdomain->dom_mtx);
+
+ np = ndrv_find_inbound(ifp, proto_family);
+ if (np == NULL) {
+ lck_mtx_unlock(ndrvdomain->dom_mtx);
+ return ENOENT;
}
+
so = np->nd_socket;
- /* prepend the frame header */
- m = m_prepend(m, ifp->if_data.ifi_hdrlen, M_NOWAIT);
- if (m == NULL)
- return EJUSTRETURN;
- bcopy(frame_header, m->m_data, ifp->if_data.ifi_hdrlen);
+
if (sbappendaddr(&(so->so_rcv), (struct sockaddr *)&ndrvsrc,
- m, (struct mbuf *)0) == 0)
- {
- /* yes, sbappendaddr returns zero if the sockbuff is full... */
- /* caller will free m */
- return(ENOMEM);
- } else
+ m, NULL, &error) != 0) {
sorwakeup(so);
- return(0);
-}
+ }
-int
-ndrv_control(struct socket *so, u_long cmd, caddr_t data,
- struct ifnet *ifp, struct proc *p)
-{
- return (0);
+ lck_mtx_unlock(ndrvdomain->dom_mtx);
+
+ return 0; /* radar 4030377 - always return 0 */
}
/*
* Allocate an ndrv control block and some buffer space for the socket
*/
-int
-ndrv_attach(struct socket *so, int proto, struct proc *p)
+static int
+ndrv_attach(struct socket *so, int proto, __unused struct proc *p)
{
- int error;
- register struct ndrv_cb *np = sotondrvcb(so);
+ int error;
+ struct ndrv_cb *np = sotondrvcb(so);
- if ((so->so_state & SS_PRIV) == 0)
- return(EPERM);
+ if ((so->so_state & SS_PRIV) == 0) {
+ return EPERM;
+ }
#if NDRV_DEBUG
- kprintf("NDRV attach: %x, %x, %x\n", so, proto, np);
+ printf("NDRV attach: %x, %x, %x\n", so, proto, np);
#endif
+
+ if ((error = soreserve(so, ndrv_sendspace, ndrv_recvspace))) {
+ return error;
+ }
+
MALLOC(np, struct ndrv_cb *, sizeof(*np), M_PCB, M_WAITOK);
- if (np == NULL)
- return (ENOMEM);
- so->so_pcb = (caddr_t)np;
- bzero(np, sizeof(*np));
+ if (np == NULL) {
+ return ENOMEM;
+ }
+ so->so_pcb = (caddr_t)np;
+ bzero(np, sizeof(*np));
#if NDRV_DEBUG
- kprintf("NDRV attach: %x, %x, %x\n", so, proto, np);
+ printf("NDRV attach: %x, %x, %x\n", so, proto, np);
#endif
- if ((error = soreserve(so, ndrv_sendspace, ndrv_recvspace)))
- return(error);
TAILQ_INIT(&np->nd_dlist);
np->nd_signature = NDRV_SIGNATURE;
np->nd_socket = so;
- np->nd_proto.sp_family = so->so_proto->pr_domain->dom_family;
+ np->nd_proto.sp_family = SOCK_DOM(so);
np->nd_proto.sp_protocol = proto;
- np->nd_if = NULL;
- np->nd_tag = 0;
- np->nd_family = 0;
- np->nd_unit = 0;
- insque((queue_t)np, (queue_t)&ndrvl);
- return(0);
+ np->nd_if = NULL;
+ np->nd_proto_family = 0;
+ np->nd_family = 0;
+ np->nd_unit = 0;
+
+ /*
+ * Use the domain mutex to protect the list
+ */
+ LCK_MTX_ASSERT(ndrvdomain->dom_mtx, LCK_MTX_ASSERT_NOTOWNED);
+ lck_mtx_lock(ndrvdomain->dom_mtx);
+
+ TAILQ_INSERT_TAIL(&ndrvl, np, nd_next);
+
+ lck_mtx_unlock(ndrvdomain->dom_mtx);
+
+ return 0;
}
/*
* Flush data or not depending on the options.
*/
-int
+static int
ndrv_detach(struct socket *so)
{
- register struct ndrv_cb *np = sotondrvcb(so);
+ struct ndrv_cb *np = sotondrvcb(so);
- if (np == 0)
+ if (np == 0) {
return EINVAL;
+ }
return ndrv_do_detach(np);
}
* Don't expect this to be used.
*/
-int ndrv_connect(struct socket *so, struct sockaddr *nam, struct proc *p)
+static int
+ndrv_connect(struct socket *so, struct sockaddr *nam, __unused struct proc *p)
{
- register struct ndrv_cb *np = sotondrvcb(so);
- int result = 0;
+ struct ndrv_cb *np = sotondrvcb(so);
- if (np == 0)
+ if (np == 0) {
return EINVAL;
+ }
- if (np->nd_faddr)
+ if (np->nd_faddr) {
return EISCONN;
-
- /* Allocate memory to store the remote address */
- MALLOC(np->nd_faddr, struct sockaddr_ndrv*,
- nam->sa_len, M_IFADDR, M_WAITOK);
- if (result != 0)
- return result;
- if (np->nd_faddr == NULL)
- return ENOMEM;
-
+ }
+
+ /* Allocate memory to store the remote address */
+ MALLOC(np->nd_faddr, struct sockaddr_ndrv*,
+ nam->sa_len, M_IFADDR, M_WAITOK);
+ if (np->nd_faddr == NULL) {
+ return ENOMEM;
+ }
+
bcopy((caddr_t) nam, (caddr_t) np->nd_faddr, nam->sa_len);
soisconnected(so);
return 0;
}
+static void
+ndrv_event(struct ifnet *ifp, __unused protocol_family_t protocol,
+ const struct kev_msg *event)
+{
+ if (event->vendor_code == KEV_VENDOR_APPLE &&
+ event->kev_class == KEV_NETWORK_CLASS &&
+ event->kev_subclass == KEV_DL_SUBCLASS &&
+ event->event_code == KEV_DL_IF_DETACHING) {
+ LCK_MTX_ASSERT(ndrvdomain->dom_mtx, LCK_MTX_ASSERT_NOTOWNED);
+ lck_mtx_lock(ndrvdomain->dom_mtx);
+ ndrv_handle_ifp_detach(ifnet_family(ifp), ifnet_unit(ifp));
+ lck_mtx_unlock(ndrvdomain->dom_mtx);
+ }
+}
+
+static int name_cmp(struct ifnet *, char *);
+
/*
* This is the "driver open" hook - we 'bind' to the
* named driver.
* Here's where we latch onto the driver.
*/
-int
-ndrv_bind(struct socket *so, struct sockaddr *nam, struct proc *p)
+static int
+ndrv_bind(struct socket *so, struct sockaddr *nam, __unused struct proc *p)
{
- register struct sockaddr_ndrv *sa = (struct sockaddr_ndrv *) nam;
- register char *dname;
- register struct ndrv_cb *np;
- register struct ifnet *ifp;
- extern int name_cmp(struct ifnet *, char *);
- int result;
-
- if TAILQ_EMPTY(&ifnet)
- return(EADDRNOTAVAIL); /* Quick sanity check */
+ struct sockaddr_ndrv *sa = (struct sockaddr_ndrv *) nam;
+ char *dname;
+ struct ndrv_cb *np;
+ struct ifnet *ifp;
+ int result;
+
+ if (TAILQ_EMPTY(&ifnet_head)) {
+ return EADDRNOTAVAIL; /* Quick sanity check */
+ }
np = sotondrvcb(so);
- if (np == 0)
+ if (np == 0) {
return EINVAL;
+ }
- if (np->nd_laddr)
- return EINVAL; /* XXX */
-
+ if (np->nd_laddr) {
+ return EINVAL; /* XXX */
+ }
/* I think we just latch onto a copy here; the caller frees */
np->nd_laddr = _MALLOC(sizeof(struct sockaddr_ndrv), M_IFADDR, M_WAITOK);
- if (np->nd_laddr == NULL)
- return(ENOMEM);
+ if (np->nd_laddr == NULL) {
+ return ENOMEM;
+ }
bcopy((caddr_t) sa, (caddr_t) np->nd_laddr, sizeof(struct sockaddr_ndrv));
- dname = sa->snd_name;
- if (*dname == '\0')
- return(EINVAL);
+ dname = (char *) sa->snd_name;
+ np->nd_laddr->snd_len = sizeof(struct sockaddr_ndrv);
+ if (*dname == '\0') {
+ return EINVAL;
+ }
#if NDRV_DEBUG
- kprintf("NDRV bind: %x, %x, %s\n", so, np, dname);
+ printf("NDRV bind: %x, %x, %s\n", so, np, dname);
#endif
/* Track down the driver and its ifnet structure.
* There's no internal call for this so we have to dup the code
* in if.c/ifconf()
*/
- TAILQ_FOREACH(ifp, &ifnet, if_link) {
- if (name_cmp(ifp, dname) == 0)
+ ifnet_head_lock_shared();
+ TAILQ_FOREACH(ifp, &ifnet_head, if_link) {
+ if (name_cmp(ifp, dname) == 0) {
break;
+ }
+ }
+ ifnet_head_done();
+
+ if (ifp == NULL) {
+ return EADDRNOTAVAIL;
+ }
+
+ // PPP doesn't support PF_NDRV.
+ if (ifnet_family(ifp) != APPLE_IF_FAM_PPP) {
+ /* NDRV on this interface */
+ struct ifnet_attach_proto_param ndrv_proto;
+ result = 0;
+ bzero(&ndrv_proto, sizeof(ndrv_proto));
+ ndrv_proto.event = ndrv_event;
+
+ /* We aren't worried about double attaching, that should just return an error */
+ socket_unlock(so, 0);
+ result = ifnet_attach_protocol(ifp, PF_NDRV, &ndrv_proto);
+ socket_lock(so, 0);
+ if (result && result != EEXIST) {
+ return result;
+ }
+ np->nd_proto_family = PF_NDRV;
+ } else {
+ np->nd_proto_family = 0;
}
- if (ifp == NULL)
- return(EADDRNOTAVAIL);
-
- /*
- * Loopback demuxing doesn't work with PF_NDRV.
- * The first 4 bytes of the packet must be the
- * protocol ptr. Can't get that from userland.
- */
- if (ifp->if_family == APPLE_IF_FAM_LOOPBACK)
- return (ENOTSUP);
-
- if ((dlil_find_dltag(ifp->if_family, ifp->if_unit,
- PF_NDRV, &np->nd_send_tag) != 0) &&
- (ifp->if_family != APPLE_IF_FAM_PPP))
- {
- /* NDRV isn't registered on this interface, lets change that */
- struct dlil_proto_reg_str ndrv_proto;
- int result = 0;
- bzero(&ndrv_proto, sizeof(ndrv_proto));
- TAILQ_INIT(&ndrv_proto.demux_desc_head);
-
- ndrv_proto.interface_family = ifp->if_family;
- ndrv_proto.protocol_family = PF_NDRV;
- ndrv_proto.unit_number = ifp->if_unit;
-
- result = dlil_attach_protocol(&ndrv_proto, &np->nd_send_tag);
-
- /*
- * If the interface does not allow PF_NDRV to attach, we will
- * respect it's wishes. Sending will be disabled. No error is
- * returned because the client may later attach a real protocol
- * that the interface may accept.
- */
- if (result != 0)
- np->nd_send_tag = 0;
- }
-
np->nd_if = ifp;
- np->nd_family = ifp->if_family;
- np->nd_unit = ifp->if_unit;
-
- return(0);
+ np->nd_family = ifnet_family(ifp);
+ np->nd_unit = ifnet_unit(ifp);
+
+ return 0;
}
-int
+static int
ndrv_disconnect(struct socket *so)
{
- register struct ndrv_cb *np = sotondrvcb(so);
+ struct ndrv_cb *np = sotondrvcb(so);
- if (np == 0)
+ if (np == 0) {
return EINVAL;
+ }
- if (np->nd_faddr == 0)
+ if (np->nd_faddr == 0) {
return ENOTCONN;
+ }
ndrv_do_disconnect(np);
return 0;
}
-/*
- * Accessor function
- */
-struct ifnet*
-ndrv_get_ifp(caddr_t ndrv_pcb)
-{
- struct ndrv_cb* np = (struct ndrv_cb*)ndrv_pcb;
-
-#if DEBUG
- {
- struct ndrv_cb* temp = ndrvl.nd_next;
- /* Verify existence of pcb */
- for (temp = ndrvl.nd_next; temp != &ndrvl; temp = temp->nd_next)
- {
- if (temp == np)
- break;
- }
-
- if (temp != np)
- {
- log(LOG_WARNING, "PF_NDRV: ndrv_get_ifp called with invalid ndrv_cb!");
- return NULL;
- }
- }
-#endif
-
- return np->nd_if;
-}
-
/*
* Mark the connection as being incapable of further input.
*/
-int
+static int
ndrv_shutdown(struct socket *so)
{
+ LCK_MTX_ASSERT(ndrvdomain->dom_mtx, LCK_MTX_ASSERT_OWNED);
socantsendmore(so);
return 0;
}
* to the appropriate driver. The really tricky part
* is the destination address...
*/
-int
-ndrv_send(struct socket *so, int flags, struct mbuf *m,
- struct sockaddr *addr, struct mbuf *control,
- struct proc *p)
+static int
+ndrv_send(struct socket *so, __unused int flags, struct mbuf *m,
+ __unused struct sockaddr *addr, struct mbuf *control,
+ __unused struct proc *p)
{
int error;
- if (control)
+ if (control) {
return EOPNOTSUPP;
+ }
error = ndrv_output(m, so);
m = NULL;
}
-int
+static int
ndrv_abort(struct socket *so)
{
- register struct ndrv_cb *np = sotondrvcb(so);
+ struct ndrv_cb *np = sotondrvcb(so);
- if (np == 0)
+ if (np == 0) {
return EINVAL;
+ }
ndrv_do_disconnect(np);
return 0;
}
-int
-ndrv_sense(struct socket *so, struct stat *sb)
-{
- /*
- * stat: don't bother with a blocksize.
- */
- return (0);
-}
-
-int
+static int
ndrv_sockaddr(struct socket *so, struct sockaddr **nam)
{
- register struct ndrv_cb *np = sotondrvcb(so);
+ struct ndrv_cb *np = sotondrvcb(so);
int len;
- if (np == 0)
+ if (np == 0) {
return EINVAL;
+ }
- if (np->nd_laddr == 0)
+ if (np->nd_laddr == 0) {
return EINVAL;
+ }
len = np->nd_laddr->snd_len;
+ MALLOC(*nam, struct sockaddr *, len, M_SONAME, M_WAITOK);
+ if (*nam == NULL) {
+ return ENOMEM;
+ }
bcopy((caddr_t)np->nd_laddr, *nam,
- (unsigned)len);
+ (unsigned)len);
return 0;
}
-int
+static int
ndrv_peeraddr(struct socket *so, struct sockaddr **nam)
{
- register struct ndrv_cb *np = sotondrvcb(so);
+ struct ndrv_cb *np = sotondrvcb(so);
int len;
- if (np == 0)
+ if (np == 0) {
return EINVAL;
+ }
- if (np->nd_faddr == 0)
+ if (np->nd_faddr == 0) {
return ENOTCONN;
+ }
len = np->nd_faddr->snd_len;
+ MALLOC(*nam, struct sockaddr *, len, M_SONAME, M_WAITOK);
+ if (*nam == NULL) {
+ return ENOMEM;
+ }
bcopy((caddr_t)np->nd_faddr, *nam,
- (unsigned)len);
+ (unsigned)len);
return 0;
}
-/* Control input */
-
-void
-ndrv_ctlinput(int dummy1, struct sockaddr *dummy2, void *dummy3)
-{
-}
-
/* Control output */
-int
+static int
ndrv_ctloutput(struct socket *so, struct sockopt *sopt)
{
- register struct ndrv_cb *np = sotondrvcb(so);
+ struct ndrv_cb *np = sotondrvcb(so);
int error = 0;
-
- switch(sopt->sopt_name)
- {
- case NDRV_DELDMXSPEC: /* Delete current spec */
- /* Verify no parameter was passed */
- if (sopt->sopt_val != NULL || sopt->sopt_valsize != 0) {
- /*
- * We don't support deleting a specific demux, it's
- * all or nothing.
- */
- return EINVAL;
- }
- error = ndrv_delspec(np);
- break;
- case NDRV_SETDMXSPEC: /* Set protocol spec */
- error = ndrv_setspec(np, sopt);
- break;
- default:
- error = ENOTSUP;
- }
+
+ switch (sopt->sopt_name) {
+ case NDRV_DELDMXSPEC: /* Delete current spec */
+ /* Verify no parameter was passed */
+ if (sopt->sopt_val != 0 || sopt->sopt_valsize != 0) {
+ /*
+ * We don't support deleting a specific demux, it's
+ * all or nothing.
+ */
+ return EINVAL;
+ }
+ error = ndrv_delspec(np);
+ break;
+ case NDRV_SETDMXSPEC: /* Set protocol spec */
+ error = ndrv_setspec(np, sopt);
+ break;
+ case NDRV_ADDMULTICAST:
+ error = ndrv_do_add_multicast(np, sopt);
+ break;
+ case NDRV_DELMULTICAST:
+ error = ndrv_do_remove_multicast(np, sopt);
+ break;
+ default:
+ error = ENOTSUP;
+ }
#ifdef NDRV_DEBUG
log(LOG_WARNING, "NDRV CTLOUT: %x returns %d\n", sopt->sopt_name,
error);
#endif
- return(error);
-}
-
-/* Drain the queues */
-void
-ndrv_drain()
-{
-}
-
-/* Sysctl hook for NDRV */
-int
-ndrv_sysctl()
-{
- return(0);
+ return error;
}
-int
-ndrv_do_detach(register struct ndrv_cb *np)
+static int
+ndrv_do_detach(struct ndrv_cb *np)
{
- struct ndrv_cb* cur_np = NULL;
- struct socket *so = np->nd_socket;
- struct ndrv_multicast* next;
- int error;
+ struct ndrv_cb* cur_np = NULL;
+ struct socket *so = np->nd_socket;
+ int error = 0;
+ struct ifnet * ifp;
#if NDRV_DEBUG
- kprintf("NDRV detach: %x, %x\n", so, np);
+ printf("NDRV detach: %x, %x\n", so, np);
#endif
- if (np->nd_tag != 0)
- {
- error = dlil_detach_protocol(np->nd_tag);
- if (error)
- {
- log(LOG_WARNING, "NDRV ndrv_do_detach: error %d removing dl_tag %d",
- error, np->nd_tag);
- return error;
- }
- }
-
- /* Remove from the linked list of control blocks */
- remque((queue_t)np);
-
- if (np->nd_send_tag != 0)
- {
- /* Check if this is the last socket attached to this interface */
- for (cur_np = ndrvl.nd_next; cur_np != &ndrvl; cur_np = cur_np->nd_next)
- {
- if (cur_np->nd_family == np->nd_family &&
- cur_np->nd_unit == np->nd_unit)
- {
- break;
- }
- }
-
- /* If there are no other interfaces, detach PF_NDRV from the interface */
- if (cur_np == &ndrvl)
- {
- dlil_detach_protocol(np->nd_send_tag);
- }
- }
-
- FREE((caddr_t)np, M_PCB);
+ ndrv_remove_all_multicast(np);
+
+ /* Remove from the linked list of control blocks */
+ LCK_MTX_ASSERT(ndrvdomain->dom_mtx, LCK_MTX_ASSERT_OWNED);
+ TAILQ_REMOVE(&ndrvl, np, nd_next);
+
+ ifp = np->nd_if;
+ if (ifp != NULL) {
+ u_int32_t proto_family = np->nd_proto_family;
+
+ if (proto_family != PF_NDRV && proto_family != 0) {
+ socket_unlock(so, 0);
+ ifnet_detach_protocol(ifp, proto_family);
+ socket_lock(so, 0);
+ }
+
+ /* Check if this is the last socket attached to this interface */
+ LCK_MTX_ASSERT(ndrvdomain->dom_mtx, LCK_MTX_ASSERT_OWNED);
+ TAILQ_FOREACH(cur_np, &ndrvl, nd_next) {
+ if (cur_np->nd_family == np->nd_family &&
+ cur_np->nd_unit == np->nd_unit) {
+ break;
+ }
+ }
+
+ /* If there are no other interfaces, detach PF_NDRV from the interface */
+ if (cur_np == NULL) {
+ socket_unlock(so, 0);
+ ifnet_detach_protocol(ifp, PF_NDRV);
+ socket_lock(so, 0);
+ }
+ }
+ if (np->nd_laddr != NULL) {
+ FREE(np->nd_laddr, M_IFADDR);
+ np->nd_laddr = NULL;
+ }
+ FREE(np, M_PCB);
so->so_pcb = 0;
+ so->so_flags |= SOF_PCBCLEARING;
sofree(so);
return error;
}
-int
-ndrv_do_disconnect(register struct ndrv_cb *np)
+static int
+ndrv_do_disconnect(struct ndrv_cb *np)
{
+ struct socket * so = np->nd_socket;
#if NDRV_DEBUG
- kprintf("NDRV disconnect: %x\n", np);
+ printf("NDRV disconnect: %x\n", np);
#endif
- if (np->nd_faddr)
- {
- FREE(np->nd_faddr, M_IFADDR);
+ if (np->nd_faddr) {
+ FREE(np->nd_faddr, M_IFADDR);
np->nd_faddr = 0;
}
- if (np->nd_socket->so_state & SS_NOFDREF)
+ /*
+ * A multipath subflow socket would have its SS_NOFDREF set by default,
+ * so check for SOF_MP_SUBFLOW socket flag before detaching the PCB;
+ * when the socket is closed for real, SOF_MP_SUBFLOW would be cleared.
+ */
+ if (!(so->so_flags & SOF_MP_SUBFLOW) && (so->so_state & SS_NOFDREF)) {
ndrv_do_detach(np);
- soisdisconnected(np->nd_socket);
- return(0);
+ }
+ soisdisconnected(so);
+ return 0;
+}
+
+/* Hackery - return a string version of a decimal number */
+static void
+sprint_d(u_int n, char *buf, int buflen)
+{
+ char dbuf[IFNAMSIZ];
+ char *cp = dbuf + IFNAMSIZ - 1;
+
+ *cp = 0;
+ do {
+ buflen--;
+ cp--;
+ *cp = "0123456789"[n % 10];
+ n /= 10;
+ } while (n != 0 && buflen > 0);
+ strlcpy(buf, cp, IFNAMSIZ - buflen);
+ return;
}
/*
* Try to compare a device name (q) with one of the funky ifnet
* device names (ifp).
*/
-int name_cmp(register struct ifnet *ifp, register char *q)
-{ register char *r;
- register int len;
+static int
+name_cmp(struct ifnet *ifp, char *q)
+{
+ char *r;
+ int len;
char buf[IFNAMSIZ];
- static char *sprint_d();
r = buf;
- len = strlen(ifp->if_name);
- strncpy(r, ifp->if_name, IFNAMSIZ);
+ len = strlen(ifnet_name(ifp));
+ strlcpy(r, ifnet_name(ifp), IFNAMSIZ);
r += len;
- (void)sprint_d(ifp->if_unit, r, IFNAMSIZ-(r-buf));
+ sprint_d(ifnet_unit(ifp), r, IFNAMSIZ - (r - buf));
#if NDRV_DEBUG
- kprintf("Comparing %s, %s\n", buf, q);
+ printf("Comparing %s, %s\n", buf, q);
#endif
- return(strncmp(buf, q, IFNAMSIZ));
-}
-
-/* Hackery - return a string version of a decimal number */
-static char *
-sprint_d(n, buf, buflen)
- u_int n;
- char *buf;
- int buflen;
-{ char dbuf[IFNAMSIZ];
- register char *cp = dbuf+IFNAMSIZ-1;
-
- *cp = 0;
- do { buflen--;
- cp--;
- *cp = "0123456789"[n % 10];
- n /= 10;
- } while (n != 0 && buflen > 0);
- strncpy(buf, cp, IFNAMSIZ-buflen);
- return (cp);
+ return strncmp(buf, q, IFNAMSIZ);
}
+#if 0
+//### Not used
/*
* When closing, dump any enqueued mbufs.
*/
void
-ndrv_flushq(register struct ifqueue *q)
+ndrv_flushq(struct ifqueue *q)
{
- register struct mbuf *m;
- for (;;)
- {
+ struct mbuf *m;
+ for (;;) {
IF_DEQUEUE(q, m);
- if (m == NULL)
+ if (m == NULL) {
break;
+ }
IF_DROP(q);
- if (m)
+ if (m) {
m_freem(m);
+ }
}
}
+#endif
int
ndrv_setspec(struct ndrv_cb *np, struct sockopt *sopt)
{
- struct dlil_proto_reg_str dlilSpec;
- struct ndrv_protocol_desc ndrvSpec;
- struct dlil_demux_desc* dlilDemux = NULL;
- struct ndrv_demux_desc* ndrvDemux = NULL;
- int error = 0;
-
- /* Sanity checking */
- if (np->nd_tag)
- return EBUSY;
- if (np->nd_if == NULL)
- return EINVAL;
- if (sopt->sopt_valsize != sizeof(struct ndrv_protocol_desc))
- return EINVAL;
-
- /* Copy the ndrvSpec */
- error = sooptcopyin(sopt, &ndrvSpec, sizeof(struct ndrv_protocol_desc),
- sizeof(struct ndrv_protocol_desc));
- if (error != 0)
- return error;
-
- /* Verify the parameter */
- if (ndrvSpec.version > NDRV_PROTOCOL_DESC_VERS)
- return ENOTSUP; // version is too new!
- else if (ndrvSpec.version < 1)
- return EINVAL; // version is not valid
-
- /* Allocate storage for demux array */
- MALLOC(ndrvDemux, struct ndrv_demux_desc*,
- ndrvSpec.demux_count * sizeof(struct ndrv_demux_desc), M_TEMP, M_WAITOK);
- if (ndrvDemux == NULL)
- return ENOMEM;
-
- /* Allocate enough dlil_demux_descs */
- MALLOC(dlilDemux, struct dlil_demux_desc*,
- sizeof(*dlilDemux) * ndrvSpec.demux_count, M_TEMP, M_WAITOK);
- if (dlilDemux == NULL)
- error = ENOMEM;
-
- if (error == 0)
- {
- /* Copy the ndrv demux array from userland */
- error = copyin(ndrvSpec.demux_list, ndrvDemux,
- ndrvSpec.demux_count * sizeof(struct ndrv_demux_desc));
- ndrvSpec.demux_list = ndrvDemux;
- }
-
- if (error == 0)
- {
- /* At this point, we've at least got enough bytes to start looking around */
- u_long demuxOn = 0;
-
- bzero(&dlilSpec, sizeof(dlilSpec));
- TAILQ_INIT(&dlilSpec.demux_desc_head);
- dlilSpec.interface_family = np->nd_family;
- dlilSpec.unit_number = np->nd_unit;
- dlilSpec.input = ndrv_input;
- dlilSpec.protocol_family = ndrvSpec.protocol_family;
-
- for (demuxOn = 0; demuxOn < ndrvSpec.demux_count; demuxOn++)
- {
- /* Convert an ndrv_demux_desc to a dlil_demux_desc */
- error = ndrv_to_dlil_demux(&ndrvSpec.demux_list[demuxOn], &dlilDemux[demuxOn]);
- if (error)
- break;
-
- /* Add the dlil_demux_desc to the list */
- TAILQ_INSERT_TAIL(&dlilSpec.demux_desc_head, &dlilDemux[demuxOn], next);
- }
- }
-
- if (error == 0)
- {
- /* We've got all our ducks lined up...lets attach! */
- error = dlil_attach_protocol(&dlilSpec, &np->nd_tag);
- }
-
- /* Free any memory we've allocated */
- if (dlilDemux)
- FREE(dlilDemux, M_TEMP);
- if (ndrvDemux)
- FREE(ndrvDemux, M_TEMP);
-
- return error;
+ struct ifnet_attach_proto_param proto_param;
+ struct ndrv_protocol_desc ndrvSpec;
+ struct ndrv_demux_desc* ndrvDemux = NULL;
+ int error = 0;
+ struct socket * so = np->nd_socket;
+ user_addr_t user_addr;
+
+ /* Sanity checking */
+ if (np->nd_proto_family != PF_NDRV) {
+ return EBUSY;
+ }
+ if (np->nd_if == NULL) {
+ return EINVAL;
+ }
+
+ /* Copy the ndrvSpec */
+ if (proc_is64bit(sopt->sopt_p)) {
+ struct ndrv_protocol_desc64 ndrvSpec64;
+
+ if (sopt->sopt_valsize != sizeof(ndrvSpec64)) {
+ return EINVAL;
+ }
+
+ error = sooptcopyin(sopt, &ndrvSpec64, sizeof(ndrvSpec64), sizeof(ndrvSpec64));
+ if (error != 0) {
+ return error;
+ }
+
+ ndrvSpec.version = ndrvSpec64.version;
+ ndrvSpec.protocol_family = ndrvSpec64.protocol_family;
+ ndrvSpec.demux_count = ndrvSpec64.demux_count;
+
+ user_addr = ndrvSpec64.demux_list;
+ } else {
+ struct ndrv_protocol_desc32 ndrvSpec32;
+
+ if (sopt->sopt_valsize != sizeof(ndrvSpec32)) {
+ return EINVAL;
+ }
+
+ error = sooptcopyin(sopt, &ndrvSpec32, sizeof(ndrvSpec32), sizeof(ndrvSpec32));
+ if (error != 0) {
+ return error;
+ }
+
+ ndrvSpec.version = ndrvSpec32.version;
+ ndrvSpec.protocol_family = ndrvSpec32.protocol_family;
+ ndrvSpec.demux_count = ndrvSpec32.demux_count;
+
+ user_addr = CAST_USER_ADDR_T(ndrvSpec32.demux_list);
+ }
+
+ /* Verify the parameter */
+ if (ndrvSpec.version > NDRV_PROTOCOL_DESC_VERS) {
+ return ENOTSUP; // version is too new!
+ } else if (ndrvSpec.version < 1) {
+ return EINVAL; // version is not valid
+ } else if (ndrvSpec.demux_count > NDRV_PROTODEMUX_COUNT || ndrvSpec.demux_count == 0) {
+ return EINVAL; // demux_count is not valid
+ }
+ bzero(&proto_param, sizeof(proto_param));
+ proto_param.demux_count = ndrvSpec.demux_count;
+
+ /* Allocate storage for demux array */
+ MALLOC(ndrvDemux, struct ndrv_demux_desc*, proto_param.demux_count *
+ sizeof(struct ndrv_demux_desc), M_TEMP, M_WAITOK);
+ if (ndrvDemux == NULL) {
+ return ENOMEM;
+ }
+
+ /* Allocate enough ifnet_demux_descs */
+ MALLOC(proto_param.demux_array, struct ifnet_demux_desc*,
+ sizeof(*proto_param.demux_array) * ndrvSpec.demux_count,
+ M_TEMP, M_WAITOK);
+ if (proto_param.demux_array == NULL) {
+ error = ENOMEM;
+ }
+
+ if (error == 0) {
+ /* Copy the ndrv demux array from userland */
+ error = copyin(user_addr, ndrvDemux,
+ ndrvSpec.demux_count * sizeof(struct ndrv_demux_desc));
+ ndrvSpec.demux_list = ndrvDemux;
+ }
+
+ if (error == 0) {
+ /* At this point, we've at least got enough bytes to start looking around */
+ u_int32_t demuxOn = 0;
+
+ proto_param.demux_count = ndrvSpec.demux_count;
+ proto_param.input = ndrv_input;
+ proto_param.event = ndrv_event;
+
+ for (demuxOn = 0; demuxOn < ndrvSpec.demux_count; demuxOn++) {
+ /* Convert an ndrv_demux_desc to a ifnet_demux_desc */
+ error = ndrv_to_ifnet_demux(&ndrvSpec.demux_list[demuxOn],
+ &proto_param.demux_array[demuxOn]);
+ if (error) {
+ break;
+ }
+ }
+ }
+
+ if (error == 0) {
+ /* We've got all our ducks lined up...lets attach! */
+ socket_unlock(so, 0);
+ error = ifnet_attach_protocol(np->nd_if, ndrvSpec.protocol_family,
+ &proto_param);
+ socket_lock(so, 0);
+ if (error == 0) {
+ np->nd_proto_family = ndrvSpec.protocol_family;
+ }
+ }
+
+ /* Free any memory we've allocated */
+ if (proto_param.demux_array) {
+ FREE(proto_param.demux_array, M_TEMP);
+ }
+ if (ndrvDemux) {
+ FREE(ndrvDemux, M_TEMP);
+ }
+
+ return error;
}
int
-ndrv_to_dlil_demux(struct ndrv_demux_desc* ndrv, struct dlil_demux_desc* dlil)
+ndrv_to_ifnet_demux(struct ndrv_demux_desc* ndrv, struct ifnet_demux_desc* ifdemux)
{
- bzero(dlil, sizeof(*dlil));
-
- if (ndrv->type < DLIL_DESC_ETYPE2)
- {
- /* using old "type", not supported */
- return ENOTSUP;
- }
-
- if (ndrv->length > 28)
- {
- return EINVAL;
- }
-
- dlil->type = ndrv->type;
- dlil->native_type = ndrv->data.other;
- dlil->variants.native_type_length = ndrv->length;
-
- return 0;
+ bzero(ifdemux, sizeof(*ifdemux));
+
+ if (ndrv->type < DLIL_DESC_ETYPE2) {
+ /* using old "type", not supported */
+ return ENOTSUP;
+ }
+
+ if (ndrv->length > 28) {
+ return EINVAL;
+ }
+
+ ifdemux->type = ndrv->type;
+ ifdemux->data = ndrv->data.other;
+ ifdemux->datalen = ndrv->length;
+
+ return 0;
}
int
ndrv_delspec(struct ndrv_cb *np)
{
- int result = 0;
-
- if (np->nd_tag == 0)
- return EINVAL;
-
- /* Detach the protocol */
- result = dlil_detach_protocol(np->nd_tag);
- if (result == 0)
- {
- np->nd_tag = 0;
- }
-
+ int result = 0;
+
+ if (np->nd_proto_family == PF_NDRV ||
+ np->nd_proto_family == 0) {
+ return EINVAL;
+ }
+
+ /* Detach the protocol */
+ result = ifnet_detach_protocol(np->nd_if, np->nd_proto_family);
+ np->nd_proto_family = PF_NDRV;
+
return result;
}
struct ndrv_cb *
-ndrv_find_tag(unsigned int tag)
+ndrv_find_inbound(struct ifnet *ifp, u_int32_t protocol)
{
- struct ndrv_cb* np;
- int i;
-
- if (tag == 0)
- return NULL;
-
- for (np = ndrvl.nd_next; np != NULL; np = np->nd_next)
- {
- if (np->nd_tag == tag)
- {
- return np;
- }
- }
-
+ struct ndrv_cb* np;
+
+ LCK_MTX_ASSERT(ndrvdomain->dom_mtx, LCK_MTX_ASSERT_OWNED);
+
+ if (protocol == PF_NDRV) {
+ return NULL;
+ }
+
+ TAILQ_FOREACH(np, &ndrvl, nd_next) {
+ if (np->nd_proto_family == protocol &&
+ np->nd_if == ifp) {
+ return np;
+ }
+ }
+
return NULL;
}
-void ndrv_dominit()
+static void
+ndrv_handle_ifp_detach(u_int32_t family, short unit)
+{
+ struct ndrv_cb* np;
+ struct ifnet *ifp = NULL;
+ struct socket *so;
+
+ /* Find all sockets using this interface. */
+ TAILQ_FOREACH(np, &ndrvl, nd_next) {
+ if (np->nd_family == family &&
+ np->nd_unit == unit) {
+ /* This cb is using the detaching interface, but not for long. */
+ /* Let the protocol go */
+ ifp = np->nd_if;
+ if (np->nd_proto_family != 0) {
+ ndrv_delspec(np);
+ }
+
+ /* Delete the multicasts first */
+ ndrv_remove_all_multicast(np);
+
+ /* Disavow all knowledge of the ifp */
+ np->nd_if = NULL;
+ np->nd_unit = 0;
+ np->nd_family = 0;
+
+ so = np->nd_socket;
+ /* Make sure sending returns an error */
+ LCK_MTX_ASSERT(ndrvdomain->dom_mtx, LCK_MTX_ASSERT_OWNED);
+ socantsendmore(so);
+ socantrcvmore(so);
+ }
+ }
+
+ /* Unregister our protocol */
+ if (ifp) {
+ ifnet_detach_protocol(ifp, PF_NDRV);
+ }
+}
+
+static int
+ndrv_do_add_multicast(struct ndrv_cb *np, struct sockopt *sopt)
{
- static int ndrv_dominited = 0;
+ struct ndrv_multiaddr* ndrv_multi;
+ int result;
+
+ if (sopt->sopt_val == 0 || sopt->sopt_valsize < 2 ||
+ sopt->sopt_level != SOL_NDRVPROTO || sopt->sopt_valsize > SOCK_MAXADDRLEN) {
+ return EINVAL;
+ }
+ if (np->nd_if == NULL) {
+ return ENXIO;
+ }
+ if (!(np->nd_dlist_cnt < ndrv_multi_max_count)) {
+ return EPERM;
+ }
+
+ // Allocate storage
+ MALLOC(ndrv_multi, struct ndrv_multiaddr*, sizeof(struct ndrv_multiaddr) -
+ sizeof(struct sockaddr) + sopt->sopt_valsize, M_IFADDR, M_WAITOK);
+ if (ndrv_multi == NULL) {
+ return ENOMEM;
+ }
+
+ // Copy in the address
+ result = copyin(sopt->sopt_val, &ndrv_multi->addr, sopt->sopt_valsize);
+
+ // Validate the sockaddr
+ if (result == 0 && sopt->sopt_valsize != ndrv_multi->addr.sa_len) {
+ result = EINVAL;
+ }
+
+ if (result == 0 && ndrv_have_multicast(np, &ndrv_multi->addr)) {
+ result = EEXIST;
+ }
+
+ if (result == 0) {
+ // Try adding the multicast
+ result = ifnet_add_multicast(np->nd_if, &ndrv_multi->addr,
+ &ndrv_multi->ifma);
+ }
+
+ if (result == 0) {
+ // Add to our linked list
+ ndrv_multi->next = np->nd_multiaddrs;
+ np->nd_multiaddrs = ndrv_multi;
+ np->nd_dlist_cnt++;
+ } else {
+ // Free up the memory, something went wrong
+ FREE(ndrv_multi, M_IFADDR);
+ }
- if (ndrv_dominited == 0 &&
- net_add_proto(&ndrvsw, &ndrvdomain) == 0)
- ndrv_dominited = 1;
+ return result;
}
-void
-ndrv_read_event(struct socket* so, caddr_t ref, int waitf)
+static int
+ndrv_do_remove_multicast(struct ndrv_cb *np, struct sockopt *sopt)
{
- // Read an event
- struct mbuf *m = NULL;
- struct kern_event_msg *msg;
- struct uio auio = {0};
- int result = 0;
- int flags = 0;
-
- // Get the data
- auio.uio_resid = 1000000; // large number to get all of the data
- flags = MSG_DONTWAIT;
- result = soreceive(so, (struct sockaddr**)NULL, &auio, &m,
- (struct mbuf**)NULL, &flags);
- if (result != 0 || m == NULL)
- return;
-
- // cast the mbuf to a kern_event_msg
- // this is dangerous, doesn't handle linked mbufs
- msg = mtod(m, struct kern_event_msg*);
-
- // check for detaches, assume even filtering is working
- if (msg->event_code == KEV_DL_IF_DETACHING ||
- msg->event_code == KEV_DL_IF_DETACHED)
- {
- struct net_event_data *ev_data;
- ev_data = (struct net_event_data*)msg->event_data;
- ndrv_handle_ifp_detach(ev_data->if_family, ev_data->if_unit);
- }
-
- m_free(m);
+ struct sockaddr* multi_addr;
+ struct ndrv_multiaddr* ndrv_entry = NULL;
+ int result;
+
+ if (sopt->sopt_val == 0 || sopt->sopt_valsize < 2 ||
+ sopt->sopt_level != SOL_NDRVPROTO) {
+ return EINVAL;
+ }
+ if (np->nd_if == NULL || np->nd_dlist_cnt == 0) {
+ return ENXIO;
+ }
+
+ // Allocate storage
+ MALLOC(multi_addr, struct sockaddr*, sopt->sopt_valsize,
+ M_TEMP, M_WAITOK);
+ if (multi_addr == NULL) {
+ return ENOMEM;
+ }
+
+ // Copy in the address
+ result = copyin(sopt->sopt_val, multi_addr, sopt->sopt_valsize);
+
+ // Validate the sockaddr
+ if (result == 0 && sopt->sopt_valsize != multi_addr->sa_len) {
+ result = EINVAL;
+ }
+
+ if (result == 0) {
+ /* Find the old entry */
+ ndrv_entry = ndrv_have_multicast(np, multi_addr);
+
+ if (ndrv_entry == NULL) {
+ result = ENOENT;
+ }
+ }
+
+ if (result == 0) {
+ // Try deleting the multicast
+ result = ifnet_remove_multicast(ndrv_entry->ifma);
+ }
+
+ if (result == 0) {
+ // Remove from our linked list
+ struct ndrv_multiaddr* cur = np->nd_multiaddrs;
+
+ ifmaddr_release(ndrv_entry->ifma);
+
+ if (cur == ndrv_entry) {
+ np->nd_multiaddrs = cur->next;
+ } else {
+ for (cur = cur->next; cur != NULL; cur = cur->next) {
+ if (cur->next == ndrv_entry) {
+ cur->next = cur->next->next;
+ break;
+ }
+ }
+ }
+
+ np->nd_dlist_cnt--;
+
+ // Free the memory
+ FREE(ndrv_entry, M_IFADDR);
+ }
+ FREE(multi_addr, M_TEMP);
+
+ return result;
}
-void
-ndrv_handle_ifp_detach(u_long family, short unit)
+static struct ndrv_multiaddr*
+ndrv_have_multicast(struct ndrv_cb *np, struct sockaddr* inAddr)
{
- struct ndrv_cb* np;
- u_long dl_tag;
-
- /* Find all sockets using this interface. */
- for (np = ndrvl.nd_next; np != &ndrvl; np = np->nd_next)
- {
- if (np->nd_family == family &&
- np->nd_unit == unit)
- {
- /* This cb is using the detaching interface, but not for long. */
- /* Let the protocol go */
- if (np->nd_tag != 0)
- ndrv_delspec(np);
-
- /* Disavow all knowledge of the ifp */
- np->nd_if = NULL;
- np->nd_unit = 0;
- np->nd_family = 0;
- np->nd_send_tag = 0;
-
- /* Make sure sending returns an error */
- /* Is this safe? Will we drop the funnel? */
- socantsendmore(np->nd_socket);
- socantrcvmore(np->nd_socket);
- }
- }
-
- /* Unregister our protocol */
- if (dlil_find_dltag(family, unit, PF_NDRV, &dl_tag) == 0) {
- dlil_detach_protocol(dl_tag);
- }
+ struct ndrv_multiaddr* cur;
+ for (cur = np->nd_multiaddrs; cur != NULL; cur = cur->next) {
+ if ((inAddr->sa_len == cur->addr.sa_len) &&
+ (bcmp(&cur->addr, inAddr, inAddr->sa_len) == 0)) {
+ // Found a match
+ return cur;
+ }
+ }
+
+ return NULL;
}
-struct pr_usrreqs ndrv_usrreqs = {
- ndrv_abort, pru_accept_notsupp, ndrv_attach, ndrv_bind,
- ndrv_connect, pru_connect2_notsupp, ndrv_control, ndrv_detach,
- ndrv_disconnect, pru_listen_notsupp, ndrv_peeraddr, pru_rcvd_notsupp,
- pru_rcvoob_notsupp, ndrv_send, ndrv_sense, ndrv_shutdown,
- ndrv_sockaddr, sosend, soreceive, sopoll
+static void
+ndrv_remove_all_multicast(struct ndrv_cb* np)
+{
+ struct ndrv_multiaddr* cur;
+
+ if (np->nd_if != NULL) {
+ while (np->nd_multiaddrs != NULL) {
+ cur = np->nd_multiaddrs;
+ np->nd_multiaddrs = cur->next;
+
+ ifnet_remove_multicast(cur->ifma);
+ ifmaddr_release(cur->ifma);
+ FREE(cur, M_IFADDR);
+ }
+ }
+}
+
+static struct pr_usrreqs ndrv_usrreqs = {
+ .pru_abort = ndrv_abort,
+ .pru_attach = ndrv_attach,
+ .pru_bind = ndrv_bind,
+ .pru_connect = ndrv_connect,
+ .pru_detach = ndrv_detach,
+ .pru_disconnect = ndrv_disconnect,
+ .pru_peeraddr = ndrv_peeraddr,
+ .pru_send = ndrv_send,
+ .pru_shutdown = ndrv_shutdown,
+ .pru_sockaddr = ndrv_sockaddr,
+ .pru_sosend = sosend,
+ .pru_soreceive = soreceive,
};
-struct protosw ndrvsw =
-{ SOCK_RAW, &ndrvdomain, NDRVPROTO_NDRV, PR_ATOMIC|PR_ADDR,
- 0, ndrv_output, ndrv_ctlinput, ndrv_ctloutput,
- 0, ndrv_init, 0, 0,
- ndrv_drain, ndrv_sysctl, &ndrv_usrreqs
+static struct protosw ndrvsw[] = {
+ {
+ .pr_type = SOCK_RAW,
+ .pr_protocol = NDRVPROTO_NDRV,
+ .pr_flags = PR_ATOMIC | PR_ADDR,
+ .pr_output = ndrv_output,
+ .pr_ctloutput = ndrv_ctloutput,
+ .pr_usrreqs = &ndrv_usrreqs,
+ }
};
-struct domain ndrvdomain =
-{ AF_NDRV, "NetDriver", ndrv_dominit, NULL, NULL,
- NULL,
- NULL, NULL, 0, 0, 0, 0
+static int ndrv_proto_count = (sizeof(ndrvsw) / sizeof(struct protosw));
+
+struct domain ndrvdomain_s = {
+ .dom_family = PF_NDRV,
+ .dom_name = "NetDriver",
+ .dom_init = ndrv_dominit,
};
+
+static void
+ndrv_dominit(struct domain *dp)
+{
+ struct protosw *pr;
+ int i;
+
+ VERIFY(!(dp->dom_flags & DOM_INITIALIZED));
+ VERIFY(ndrvdomain == NULL);
+
+ ndrvdomain = dp;
+
+ for (i = 0, pr = &ndrvsw[0]; i < ndrv_proto_count; i++, pr++) {
+ net_add_proto(pr, dp, 1);
+ }
+}
projects / apple / xnu.git / blobdiff