linux/arch/s390
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
..
appldata s390: convert use of typedef ctl_table to struct ctl_table 2013-10-28 08:36:25 +01:00
boot s390/boot: Install bzImage as default kernel image 2013-11-15 14:08:36 +01:00
configs s390: add a couple of useful defconfigs 2013-10-24 17:17:14 +02:00
crypto crypto: s390 - Fix aes-xts parameter corruption 2013-11-28 22:25:16 +08:00
hypfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-09-05 08:50:26 -07:00
include net: introduce SO_BPF_EXTENSIONS 2014-01-18 19:08:58 -08:00
kernel s390/smp: improve setup of possible cpu mask 2013-12-18 17:35:18 +01:00
kvm Here are the 3.13 KVM changes. There was a lot of work on the PPC 2013-11-15 13:51:36 +09:00
lib s390/uaccess: add missing page table walk range check 2013-11-25 09:15:38 +01:00
math-emu s390: fix save and restore of the floating-point-control register 2013-10-24 17:17:11 +02:00
mm s390: handle pgtable_page_ctor() fail 2013-11-15 09:32:18 +09:00
net s390/bpf,jit: fix 32 bit divisions, use unsigned divide instructions 2014-01-17 18:54:49 -08:00
oprofile Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2013-09-11 08:36:03 -07:00
pci s390/pci: obtain function handle in hotplug notifier 2013-12-30 11:28:47 +01:00
defconfig Update default configuration 2013-10-24 17:17:15 +02:00
Kbuild s390/pci: base support 2012-11-30 15:40:45 +01:00
Kconfig s390/smp: improve setup of possible cpu mask 2013-12-18 17:35:18 +01:00
Kconfig.debug Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS 2013-04-30 17:04:09 -07:00
Makefile s390: allow to set gcc -mtune flag 2013-10-31 09:54:01 +01:00