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6f75ef188b
freebsd-dev/sys/net
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Christian S.J. Peron 6f75ef188b Slightly re-worked bpf(4) code associated with bridging: if we have a 
destination interface as a member of our bridge or this is a unicast packet,
push it through the bpf(4) machinery.

For broadcast or multicast packets, don't bother with the bpf(4) because it will
be re-injected into ether_input. We do this before we pass the packets through
the pfil(9) framework, as it is possible that pfil(9) will drop the packet or
possibly modify it, making it very difficult to debug firewall issues on the
bridge.

Further, implemented IFF_MONITOR for bridge interfaces. This does much the same
thing that it does for regular network interfaces: it pushes the packet to any
bpf(4) peers and then returns. This bypasses all of the bridge machinery,
saving mutex acquisitions, list traversals, and other operations performed by
the bridging code.

This change to the bridging code is useful in situations where individuals use a
bridge to multiplex RX/TX signals from two interfaces, as is required by some
network taps for de-multiplexing links and transmitting the RX/TX signals
out through two separate interfaces. This behaviour is quite common for network
taps monitoring links, especially for certain manufacturers.

Reviewed by:	thompsa
MFC after:	1 month
Sponsored by:	Seccuris Labs
2006-03-03 05:58:18 +00:00
..
bpf_compat.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
bpf_filter.c Correctly check the filter length. I committed the wrong version. 2006-01-03 20:34:41 +00:00
bpf_jitter.c Add BPF Just-In-Time compiler support for ng_bpf(4). 2005-12-07 21:30:47 +00:00
bpf_jitter.h Add BPF Just-In-Time compiler support for ng_bpf(4). 2005-12-07 21:30:47 +00:00
bpf.c Add BPF Just-In-Time compiler support for ng_bpf(4). 2005-12-07 21:30:47 +00:00
bpf.h Introduce two new ioctl(2) commands, BIOCLOCK and BIOCSETWF. These commands 2005-08-22 19:35:48 +00:00
bpfdesc.h Add experimental BPF Just-In-Time compiler for amd64 and i386. 2005-12-06 02:58:12 +00:00
bridgestp.c Fix up the Bridge Identifier field in the BPDU packet. 2006-02-28 00:13:24 +00:00
bsd_comp.c Eliminate MAC entry point mac_create_mbuf_from_mbuf(), which is 2005-07-05 23:39:51 +00:00
ethernet.h add ETHERTYPE_PAE for EAPOL/802.1x 2004-10-05 19:28:52 +00:00
fddi.h - Make IFP2ENADDR() a pointer to IF_LLADDR() rather than another 2005-11-11 07:36:14 +00:00
firewire.h Stop embedding struct ifnet at the top of driver softcs. Instead the 2005-06-10 16:49:24 +00:00
if_arc.h Stop embedding struct ifnet at the top of driver softcs. Instead the 2005-06-10 16:49:24 +00:00
if_arcsubr.c Return mbuf pointer or NULL from ip_fastforward() as the mbuf pointer 2006-01-18 14:24:39 +00:00
if_arp.h - Store pointer to the link-level address right in "struct ifnet" 2005-11-11 16:04:59 +00:00
if_atm.h Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
if_atmsubr.c o Make rt_check() function more strict: 2005-08-11 08:14:53 +00:00
if_bridge.c Slightly re-worked bpf(4) code associated with bridging: if we have a 2006-03-03 05:58:18 +00:00
if_bridgevar.h Add code that clears certain capabilities from the member interface, these are 2006-01-14 03:51:31 +00:00
if_clone.c Fix the following bugs: 2005-11-24 18:56:14 +00:00
if_clone.h Move the cloned interface list management in to if_clone. For some drivers the 2005-11-08 20:08:34 +00:00
if_disc.c Force this interface to be RUNNING. 2005-11-11 11:17:57 +00:00
if_dl.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
if_ef.c Return mbuf pointer or NULL from ip_fastforward() as the mbuf pointer 2006-01-18 14:24:39 +00:00
if_ethersubr.c Properly initialize args structure before passing it to ipfw_chk(): having 2006-02-03 23:03:07 +00:00
if_faith.c Move the cloned interface list management in to if_clone. For some drivers the 2005-11-08 20:08:34 +00:00
if_fddisubr.c Return mbuf pointer or NULL from ip_fastforward() as the mbuf pointer 2006-01-18 14:24:39 +00:00
if_fwsubr.c Return mbuf pointer or NULL from ip_fastforward() as the mbuf pointer 2006-01-18 14:24:39 +00:00
if_gif.c Add some initial locking to gif(4). It doesn't covers the whole driver, 2006-01-30 08:39:09 +00:00
if_gif.h Add some initial locking to gif(4). It doesn't covers the whole driver, 2006-01-30 08:39:09 +00:00
if_gre.c Remove two unnecessary type casts, of which both had a typo in 2006-02-07 20:09:02 +00:00
if_gre.h Stop embedding struct ifnet at the top of driver softcs. Instead the 2005-06-10 16:49:24 +00:00
if_iso88025subr.c Return mbuf pointer or NULL from ip_fastforward() as the mbuf pointer 2006-01-18 14:24:39 +00:00
if_llc.h Add hooks into the networking layer to support if_bridge. This changes struct 2005-06-05 03:13:13 +00:00
if_loop.c Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
if_media.c - Introduce ifmedia_baudrate(), which returns correct baudrate of the 2006-02-14 12:10:03 +00:00
if_media.h Fix build. 2006-02-15 08:25:40 +00:00
if_mib.c Add a new leaf to the net.link.generic.ifdata.%d sysctl to retrieve 2006-01-04 12:57:09 +00:00
if_mib.h Add a new leaf to the net.link.generic.ifdata.%d sysctl to retrieve 2006-01-04 12:57:09 +00:00
if_ppp.c Return mbuf pointer or NULL from ip_fastforward() as the mbuf pointer 2006-01-18 14:24:39 +00:00
if_ppp.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
if_pppvar.h Axe ppp_for_tty(). Use tty->t_lsc pointer to store sc. This 2005-08-12 08:27:15 +00:00
if_sl.c Use new (inline) functions for calls into driver. 2005-10-16 20:44:18 +00:00
if_slvar.h Stop embedding struct ifnet at the top of driver softcs. Instead the 2005-06-10 16:49:24 +00:00
if_sppp.h Stop embedding struct ifnet at the top of driver softcs. Instead the 2005-06-10 16:49:24 +00:00
if_spppfr.c Stop embedding struct ifnet at the top of driver softcs. Instead the 2005-06-10 16:49:24 +00:00
if_spppsubr.c Fix -Wundef from compiling the amd64 LINT. 2005-12-04 10:06:06 +00:00
if_stf.c Use sparse initializers for "struct domain" and "struct protosw", 2005-11-09 13:29:16 +00:00
if_stf.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
if_tap.c - Store pointer to the link-level address right in "struct ifnet" 2005-11-11 16:04:59 +00:00
if_tap.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
if_tapvar.h Stop embedding struct ifnet at the top of driver softcs. Instead the 2005-06-10 16:49:24 +00:00
if_tun.c Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and 2005-08-09 10:20:02 +00:00
if_tun.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
if_types.h Stop embedding struct ifnet at the top of driver softcs. Instead the 2005-06-10 16:49:24 +00:00
if_var.h Merge the //depot/user/yar/vlan branch into CVS. It contains some collective 2006-01-30 13:45:15 +00:00
if_vlan_var.h Merge the //depot/user/yar/vlan branch into CVS. It contains some collective 2006-01-30 13:45:15 +00:00
if_vlan.c Don't to forget to unlock the rwlock on trunk before destroying it. 2006-02-24 17:25:16 +00:00
if.c Implement SIOCGIFCONF for 32bit binaries. 2006-02-02 19:58:37 +00:00
if.h Implement SIOCGIFCONF for 32bit binaries. 2006-02-02 19:58:37 +00:00
iso88025.h - Make IFP2ENADDR() a pointer to IF_LLADDR() rather than another 2005-11-11 07:36:14 +00:00
net_osdep.h we are not OLD_BPF system. 2005-01-11 07:08:15 +00:00
netisr.c - Don't pollute opt_global.h with DEVICE_POLLING and introduce 2005-10-05 10:09:17 +00:00
netisr.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
pfil.c Somewhat re-factor the read/write locking mechanism associated with the packet 2006-02-02 03:13:16 +00:00
pfil.h define lock.h before rwlock.h for DEBUG_LOCKS 2006-02-02 20:33:10 +00:00
pfkeyv2.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ppp_comp.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ppp_deflate.c This patch fixes a problem, which exists if you have IPSEC in your kernel 2006-02-27 16:56:22 +00:00
ppp_defs.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
ppp_tty.c Use new (inline) functions for calls into driver. 2005-10-16 20:44:18 +00:00
radix.c The code in rn_walktree_from() that checks if we backed up too far 2006-02-07 20:25:39 +00:00
radix.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
raw_cb.c Acquire the raw_cb mutex around LIST_REMOVE() of a raw socket control 2005-01-24 22:56:09 +00:00
raw_cb.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
raw_usrreq.c /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
route.c - Store pointer to the link-level address right in "struct ifnet" 2005-11-11 16:04:59 +00:00
route.h Remove bogous semicolons at the end of the definitions of 2005-09-14 14:57:04 +00:00
rtsock.c - Store pointer to the link-level address right in "struct ifnet" 2005-11-11 16:04:59 +00:00
slcompress.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
slcompress.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
slip.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
zlib.c Forward declare z_errmsg with static linkage since it is defined 2005-09-11 16:13:02 +00:00
zlib.h /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00