Michal Sekletar ea02f9411d net: introduce SO_BPF_EXTENSIONS ... For user space packet capturing libraries such as libpcap, there's currently only one way to check which BPF extensions are supported by the kernel, that is, commit aa1113d9f8 ("net: filter: return -EINVAL if BPF_S_ANC* operation is not supported"). For querying all extensions at once this might be rather inconvenient. Therefore, this patch introduces a new option which can be used as an argument for getsockopt(), and allows one to obtain information about which BPF extensions are supported by the current kernel. As David Miller suggests, we do not need to define any bits right now and status quo can just return 0 in order to state that this versions supports SKF_AD_PROTOCOL up to SKF_AD_PAY_OFFSET. Later additions to BPF extensions need to add their bits to the bpf_tell_extensions() function, as documented in the comment. Signed-off-by: Michal Sekletar <msekleta@redhat.com> Cc: David Miller <davem@davemloft.net> Reviewed-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-01-18 19:08:58 -08:00
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boot	sparc: Fix piggyback with newer binutils.	2012-12-03 11:24:25 -08:00
configs	perf: Remove PERF_COUNTERS config option	2012-04-26 13:52:52 +02:00
crypto	sparc64: Set CRYPTO_TFM_REQ_MAY_SLEEP consistently in CAMELLIA code.	2012-12-19 15:44:31 -08:00
include	net: introduce SO_BPF_EXTENSIONS	2014-01-18 19:08:58 -08:00
kernel	sparc64: smp_callin: Enable irqs after preemption is disabled	2014-01-04 17:55:19 -08:00
lib	sparc64: Make PAGE_OFFSET variable.	2013-11-12 15:22:34 -08:00
math-emu	sparc64: Make montmul/montsqr/mpmul usable in 32-bit threads.	2012-10-26 15:18:37 -07:00
mm	sparc64: merge fix	2013-11-18 15:08:52 -08:00
net	bpf: do not use reciprocal divide	2014-01-15 17:02:08 -08:00
oprofile	sparc: using HZ needs an include of linux/param.h	2009-10-05 00:46:08 -07:00
power	sparc64: Hibernation support	2013-03-20 11:06:54 -07:00
prom	arch: sparc: prom: looping issue, need additional length check in the outside looping	2013-06-19 02:10:29 -07:00
Kbuild	sparc64: Add SHA1 driver making use of the 'sha1' instruction.	2012-08-20 15:08:49 -07:00
Kconfig	Kconfig cleanups for v3.13	2013-11-15 14:05:15 -08:00
Kconfig.debug	lib: consolidate DEBUG_STACK_USAGE option	2011-05-25 08:39:54 -07:00
Makefile	sparc64: Hibernation support	2013-03-20 11:06:54 -07:00