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	MN10300: And Panasonic AM34 subarch and implement SMP	2010-10-27 17:28:55 +01:00
configs	cgroup: remove the ns_cgroup	2011-05-26 17:12:34 -07:00
include	net: introduce SO_BPF_EXTENSIONS	2014-01-18 19:08:58 -08:00
kernel	mn10300/PCI: Remove unused pci_mem_start	2013-10-07 15:12:45 -06:00
lib	Disintegrate asm/system.h for MN10300	2012-03-28 18:30:02 +01:00
mm	mn10300: add missing pgtable_page_ctor/dtor calls	2013-11-15 09:32:16 +09:00
oprofile	MN10300: Kill MN10300's own profiling Kconfig	2009-04-09 10:53:16 -07:00
proc-mn2ws0050	Disintegrate asm/system.h for MN10300	2012-03-28 18:30:02 +01:00
proc-mn103e010	MN10300: Create general kernel debugger cache flushing	2011-03-18 16:54:30 +00:00
unit-asb2303	mn10300: move setup_jiffies_interrupt() to cevt-mn10300.c	2012-07-11 16:04:41 -07:00
unit-asb2305	mn10300/PCI: Remove useless pcibios_last_bus	2013-10-29 16:55:59 -06:00
unit-asb2364	mn10300: move setup_jiffies_interrupt() to cevt-mn10300.c	2012-07-11 16:04:41 -07:00
Kconfig	kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS	2013-11-15 09:32:22 +09:00
Kconfig.debug	consolidate per-arch stack overflow debugging options	2013-07-04 11:25:39 -07:00
Makefile	mn10300: only add -mmem-funcs to KBUILD_CFLAGS if gcc supports it	2012-10-06 03:04:36 +09:00