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bbd6ef87c5
linux/net
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Patrick McHardy bbd6ef87c5 packet: support extensible, 64 bit clean mmaped ring structure 
The tpacket_hdr is not 64 bit clean due to use of an unsigned long
and can't be extended because the following struct sockaddr_ll needs
to be at a fixed offset.

Add support for a version 2 tpacket protocol that removes these
limitations.

Userspace can query the header size through a new getsockopt option
and change the protocol version through a setsockopt option. The
changes needed to switch to the new protocol version are:

1. replace struct tpacket_hdr by struct tpacket2_hdr
2. query header len and save
3. set protocol version to 2
 - set up ring as usual
4. for getting the sockaddr_ll, use (void *)hdr + TPACKET_ALIGN(hdrlen)
   instead of (void *)hdr + TPACKET_ALIGN(sizeof(struct tpacket_hdr))

Steps 2 and 4 can be omitted if the struct sockaddr_ll isn't needed.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-14 22:50:15 -07:00
..
9p 9p: fix error path during early mount 2008-05-14 19:23:27 -05:00
802 net: Add GARP applicant-only participant 2008-07-05 21:26:13 -07:00
8021q vlan: deliver packets received with VLAN acceleration to network taps 2008-07-14 22:49:30 -07:00
appletalk [NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS. 2008-03-26 04:39:53 +09:00
atm atm: use const where reasonable 2008-06-17 16:20:06 -07:00
ax25 ax25: Fix std timer socket destroy handling. 2008-06-17 21:26:37 -07:00
bluetooth net: remove CVS keywords 2008-06-11 21:00:38 -07:00
bridge bridge: Check return of dev_set_promiscuity 2008-07-14 20:53:13 -07:00
can can: add sanity checks 2008-07-05 23:38:43 -07:00
core vlan: deliver packets received with VLAN acceleration to network taps 2008-07-14 22:49:30 -07:00
dccp dccp ccid-3: Length of loss intervals 2008-07-13 11:51:40 +01:00
decnet net: add fib_rules_ops to flush_cache method 2008-07-05 19:01:28 -07:00
econet econet: Use sock_orphan() instead of open-coded (and buggy) variant. 2008-06-17 03:01:47 -07:00
ethernet [NET]: Return more appropriate error from eth_validate_addr(). 2008-04-13 22:45:40 -07:00
ieee80211 wext: Emit event stream entries correctly when compat. 2008-06-16 18:50:49 -07:00
ipv4 ipv4: Fix ipmr unregister device oops 2008-07-14 20:56:34 -07:00
ipv6 ipv6: Fix using after dev_put() 2008-07-14 20:54:54 -07:00
ipx [NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS. 2008-03-26 04:39:53 +09:00
irda Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2008-07-08 16:30:17 -07:00
iucv af_iucv: exploit target message class support of IUCV 2008-06-09 15:51:03 -07:00
key Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2008-06-13 20:52:39 -07:00
lapb
llc llc: Use sock_graft() instead of by-hand version. 2008-06-17 01:21:03 -07:00
mac80211 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2008-07-14 20:40:34 -07:00
netfilter Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2008-07-14 20:23:54 -07:00
netlabel netlabel: return msg overflow error from netlbl_cipsov4_list faster 2008-07-14 22:28:25 -07:00
netlink Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2008-07-05 23:08:07 -07:00
netrom netdev: Move _xmit_lock and xmit_lock_owner into netdev_queue. 2008-07-08 23:13:53 -07:00
packet packet: support extensible, 64 bit clean mmaped ring structure 2008-07-14 22:50:15 -07:00
rfkill rfkill: ignore errors from rfkill_toggle_radio in rfkill_add_switch 2008-07-08 14:16:03 -04:00
rose netdev: Move _xmit_lock and xmit_lock_owner into netdev_queue. 2008-07-08 23:13:53 -07:00
rxrpc MIB: add struct net to UDP_INC_STATS_BH 2008-07-05 21:18:48 -07:00
sched net-sched: cls_flow: add perturbation support 2008-07-14 20:36:32 -07:00
sctp Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2008-07-08 16:30:17 -07:00
sunrpc net: remove CVS keywords 2008-06-11 21:00:38 -07:00
tipc tipc: Optimization to multicast name lookup algorithm 2008-07-14 22:45:33 -07:00
unix Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2008-06-28 01:19:40 -07:00
wanrouter net: Remove references to wan-router.txt in Kconfigs 2008-07-14 22:22:29 -07:00
wireless wext: make sysfs bits optional and deprecate them 2008-07-14 14:52:57 -04:00
x25 x25: Use sock_orphan() instead of open-coded (and buggy) variant. 2008-06-17 03:05:13 -07:00
xfrm xfrm: Add a XFRM_STATE_AF_UNSPEC flag to xfrm_usersa_info 2008-07-10 16:55:37 -07:00
compat.c net: Add compat support for getsockopt (MCAST_MSFILTER) 2008-04-29 03:23:22 -07:00
Kconfig net: Add STP demux layer 2008-07-05 21:25:39 -07:00
Makefile vlan: uninline __vlan_hwaccel_rx 2008-07-08 03:23:36 -07:00
nonet.c
socket.c wext: Dispatch and handle compat ioctls entirely in net/wireless/wext.c 2008-06-16 18:32:46 -07:00
sysctl_net.c net: remove CVS keywords 2008-06-11 21:00:38 -07:00
TUNABLE