Robert Watson de5d99354f The advent of if_detach, allowing interface removal at runtime, makes it ... possible for a panic to occur if BPF is in use on the interface at the time of the call to if_detach. This happens because BPF maintains pointers to the struct ifnet describing the interface, which is freed by if_detach. To correct this problem, a new call, bpfdetach, is introduced. bpfdetach locates BPF descriptor references to the interface, and NULLs them. Other BPF code is modified so that discovery of a NULL interface results in ENXIO (already implemented for some calls). Processes blocked on a BPF call will also be woken up so that they can receive ENXIO. Interface drivers that invoke bpfattach and if_detach must be modified to also call bpfattach(ifp) before calling if_detach(ifp). This is relevant for buses that support hot removal, such as pccard and usb. Patches to all effected devices will not be committed, only to if_wi.c, due to testing limitations. To reproduce the crash, load up tcpdump on you favorite pccard ethernet card, and then eject the card. As some pccard drivers do not invoke if_detach(ifp), this bug will not manifest itself for those drivers. Reviewed by: wes		2000-03-19 05:42:34 +00:00
..
bpf_compat.h
bpf_filter.c	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
bpf.c	The advent of if_detach, allowing interface removal at runtime, makes it	2000-03-19 05:42:34 +00:00
bpf.h	The advent of if_detach, allowing interface removal at runtime, makes it	2000-03-19 05:42:34 +00:00
bpfdesc.h	Introduce a new bd_seesent flag to the BPF descriptor, indicating whether or	2000-03-18 06:30:42 +00:00
bridge.c	Update bridging code to the one already in -stable (this was	2000-02-08 14:53:55 +00:00
bridge.h	Update bridging code to the one already in -stable (this was	2000-02-08 14:53:55 +00:00
bsd_comp.c
ethernet.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
fddi.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
hostcache.c
hostcache.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
if_arp.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
if_atm.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
if_atmsubr.c	udp IPv6 support, IPv6/IPv4 tunneling support in kernel,	1999-12-07 17:39:16 +00:00
if_disc.c	udp IPv6 support, IPv6/IPv4 tunneling support in kernel,	1999-12-07 17:39:16 +00:00
if_dl.h	The "sdl_family" field in a "struct sockaddr_dl" will be equal	2000-03-01 02:46:25 +00:00
if_ef.c	Allow if_ef driver to be compiled into kernel.	2000-01-23 03:35:11 +00:00
if_ethersubr.c	Clean up some loose ends in the network code, including the X.25 and ISO	2000-02-13 03:32:07 +00:00
if_faith.c	Remove #if NGIF > 0 and #if NFAITH > 0 as config already checks this.	2000-01-29 18:10:39 +00:00
if_fddisubr.c	Clean up some loose ends in the network code, including the X.25 and ISO	2000-02-13 03:32:07 +00:00
if_gif.c	IPv6 6to4 support.	2000-03-11 11:17:24 +00:00
if_gif.h	udp IPv6 support, IPv6/IPv4 tunneling support in kernel,	1999-12-07 17:39:16 +00:00
if_iso88025subr.c	M_PREPEND-related cleanups (unregisterifying struct mbuf *s).	1999-12-19 01:55:37 +00:00
if_llc.h
if_loop.c	Clean up some loose ends in the network code, including the X.25 and ISO	2000-02-13 03:32:07 +00:00
if_media.c
if_media.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
if_mib.c
if_mib.h
if_ppp.c	Remove some #if NFOO > 0 that are always true because of config rules.	2000-01-29 16:56:24 +00:00
if_ppp.h
if_pppvar.h	Remove some #if NFOO > 0 that are always true because of config rules.	2000-01-29 16:56:24 +00:00
if_sl.c	Fix possible SLIOCSUNIT panic	2000-02-20 21:03:53 +00:00
if_slvar.h
if_sppp.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
if_spppsubr.c	Clean up some loose ends in the network code, including the X.25 and ISO	2000-02-13 03:32:07 +00:00
if_tun.c	Track if_i{bytes,packets,errors}.	2000-02-16 04:04:36 +00:00
if_tun.h	Implement TUN[GS]IFHEAD ioctls. Passing a non-zero int to TUNSIFHEAD	2000-01-23 01:47:12 +00:00
if_tunvar.h	Implement TUN[GS]IFHEAD ioctls. Passing a non-zero int to TUNSIFHEAD	2000-01-23 01:47:12 +00:00
if_types.h	KAME related header files additions and merges.	1999-11-05 14:41:39 +00:00
if_var.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
if_vlan_var.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
if_vlan.c	m_pullup() frees the supplied mbuf on failure; we don't need to try	2000-02-07 06:18:38 +00:00
if.c	This fixes a problem where the SIOCGIFCONF ioctl goes wrong. This	2000-02-28 19:30:25 +00:00
if.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
intrq.c	Fix this so LINT compiles. There is no way this could have worked if	2000-01-29 16:13:08 +00:00
intrq.h	Redo the intrq.c idea as	2000-01-27 23:37:39 +00:00
iso88025.h
net_osdep.c	KAME netinet6 basic part(no IPsec,no V6 Multicast Forwarding, no UDP/TCP	1999-11-22 02:45:11 +00:00
net_osdep.h	KAME netinet6 basic part(no IPsec,no V6 Multicast Forwarding, no UDP/TCP	1999-11-22 02:45:11 +00:00
netisr.h	Clean up some loose ends in the network code, including the X.25 and ISO	2000-02-13 03:32:07 +00:00
pfkeyv2.h	cosmetic change: sort function prototypes	2000-01-15 05:06:14 +00:00
ppp_comp.h
ppp_deflate.c
ppp_defs.h
ppp_tty.c	Remove some #if NFOO > 0 that are always true because of config rules.	2000-01-29 16:56:24 +00:00
radix.c	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
radix.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
raw_cb.c
raw_cb.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
raw_usrreq.c
route.c	Clear ro->ro_rt just after RTFREE().	2000-01-15 07:27:12 +00:00
route.h	Clean up some loose ends in the network code, including the X.25 and ISO	2000-02-13 03:32:07 +00:00
rtsock.c	Clean up some loose ends in the network code, including the X.25 and ISO	2000-02-13 03:32:07 +00:00
slcompress.c	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
slcompress.h
slip.h
zlib.c	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00
zlib.h	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 04:46:21 +00:00