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soreuseport: setsockopt SO_ATTACH_REUSEPORT_[CE]BPF

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Expose socket options for setting a classic or extended BPF program
for use when selecting sockets in an SO_REUSEPORT group.  These options
can be used on the first socket to belong to a group before bind or
on any socket in the group after bind.

This change includes refactoring of the existing sk_filter code to
allow reuse of the existing BPF filter validation checks.

Signed-off-by: Craig Gallek <kraig@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Craig Gallek 2016-01-04 17:41:47 -05:00 • committed by David S. Miller
parent e32ea7e747
commit 538950a1b7
22 changed files with 300 additions and 62 deletions
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3
arch/m32r/include/uapi/asm/socket.h
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@ -85,4 +85,7 @@
#define SO_ATTACH_BPF 50
#define SO_DETACH_BPF SO_DETACH_FILTER
#define SO_ATTACH_REUSEPORT_CBPF 51
#define SO_ATTACH_REUSEPORT_EBPF 52
#endif /* _ASM_M32R_SOCKET_H */