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author | Willem de Bruijn <willemb@google.com> | 2017-08-03 16:29:40 -0400 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2017-08-03 21:37:29 -0700 |
commit | 76851d1212c11365362525e1e2c0a18c97478e6b (patch) | |
tree | a9f9c1795f51c31d46e8282674e5d45f46ce1cbe /arch | |
parent | 52267790ef52d7513879238ca9fac22c1733e0e3 (diff) | |
download | op-kernel-dev-76851d1212c11365362525e1e2c0a18c97478e6b.zip op-kernel-dev-76851d1212c11365362525e1e2c0a18c97478e6b.tar.gz |
sock: add SOCK_ZEROCOPY sockopt
The send call ignores unknown flags. Legacy applications may already
unwittingly pass MSG_ZEROCOPY. Continue to ignore this flag unless a
socket opts in to zerocopy.
Introduce socket option SO_ZEROCOPY to enable MSG_ZEROCOPY processing.
Processes can also query this socket option to detect kernel support
for the feature. Older kernels will return ENOPROTOOPT.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/alpha/include/uapi/asm/socket.h | 2 | ||||
-rw-r--r-- | arch/frv/include/uapi/asm/socket.h | 2 | ||||
-rw-r--r-- | arch/ia64/include/uapi/asm/socket.h | 2 | ||||
-rw-r--r-- | arch/m32r/include/uapi/asm/socket.h | 2 | ||||
-rw-r--r-- | arch/mips/include/uapi/asm/socket.h | 2 | ||||
-rw-r--r-- | arch/mn10300/include/uapi/asm/socket.h | 2 | ||||
-rw-r--r-- | arch/parisc/include/uapi/asm/socket.h | 2 | ||||
-rw-r--r-- | arch/s390/include/uapi/asm/socket.h | 2 | ||||
-rw-r--r-- | arch/sparc/include/uapi/asm/socket.h | 2 | ||||
-rw-r--r-- | arch/xtensa/include/uapi/asm/socket.h | 2 |
10 files changed, 20 insertions, 0 deletions
diff --git a/arch/alpha/include/uapi/asm/socket.h b/arch/alpha/include/uapi/asm/socket.h index 7b285dd..c6133a0 100644 --- a/arch/alpha/include/uapi/asm/socket.h +++ b/arch/alpha/include/uapi/asm/socket.h @@ -109,4 +109,6 @@ #define SO_PEERGROUPS 59 +#define SO_ZEROCOPY 60 + #endif /* _UAPI_ASM_SOCKET_H */ diff --git a/arch/frv/include/uapi/asm/socket.h b/arch/frv/include/uapi/asm/socket.h index f1e3b20..9abf02d 100644 --- a/arch/frv/include/uapi/asm/socket.h +++ b/arch/frv/include/uapi/asm/socket.h @@ -102,5 +102,7 @@ #define SO_PEERGROUPS 59 +#define SO_ZEROCOPY 60 + #endif /* _ASM_SOCKET_H */ diff --git a/arch/ia64/include/uapi/asm/socket.h b/arch/ia64/include/uapi/asm/socket.h index 5dd5c5d..002eb85 100644 --- a/arch/ia64/include/uapi/asm/socket.h +++ b/arch/ia64/include/uapi/asm/socket.h @@ -111,4 +111,6 @@ #define SO_PEERGROUPS 59 +#define SO_ZEROCOPY 60 + #endif /* _ASM_IA64_SOCKET_H */ diff --git a/arch/m32r/include/uapi/asm/socket.h b/arch/m32r/include/uapi/asm/socket.h index f8f7b47..e268e51 100644 --- a/arch/m32r/include/uapi/asm/socket.h +++ b/arch/m32r/include/uapi/asm/socket.h @@ -102,4 +102,6 @@ #define SO_PEERGROUPS 59 +#define SO_ZEROCOPY 60 + #endif /* _ASM_M32R_SOCKET_H */ diff --git a/arch/mips/include/uapi/asm/socket.h b/arch/mips/include/uapi/asm/socket.h index 882823b..6c755bc 100644 --- a/arch/mips/include/uapi/asm/socket.h +++ b/arch/mips/include/uapi/asm/socket.h @@ -120,4 +120,6 @@ #define SO_PEERGROUPS 59 +#define SO_ZEROCOPY 60 + #endif /* _UAPI_ASM_SOCKET_H */ diff --git a/arch/mn10300/include/uapi/asm/socket.h b/arch/mn10300/include/uapi/asm/socket.h index c710db3..ac82a3f 100644 --- a/arch/mn10300/include/uapi/asm/socket.h +++ b/arch/mn10300/include/uapi/asm/socket.h @@ -102,4 +102,6 @@ #define SO_PEERGROUPS 59 +#define SO_ZEROCOPY 60 + #endif /* _ASM_SOCKET_H */ diff --git a/arch/parisc/include/uapi/asm/socket.h b/arch/parisc/include/uapi/asm/socket.h index a0d4dc9..3b2bf7a 100644 --- a/arch/parisc/include/uapi/asm/socket.h +++ b/arch/parisc/include/uapi/asm/socket.h @@ -101,4 +101,6 @@ #define SO_PEERGROUPS 0x4034 +#define SO_ZEROCOPY 0x4035 + #endif /* _UAPI_ASM_SOCKET_H */ diff --git a/arch/s390/include/uapi/asm/socket.h b/arch/s390/include/uapi/asm/socket.h index 52a63f4..a56916c 100644 --- a/arch/s390/include/uapi/asm/socket.h +++ b/arch/s390/include/uapi/asm/socket.h @@ -108,4 +108,6 @@ #define SO_PEERGROUPS 59 +#define SO_ZEROCOPY 60 + #endif /* _ASM_SOCKET_H */ diff --git a/arch/sparc/include/uapi/asm/socket.h b/arch/sparc/include/uapi/asm/socket.h index 186fd81..b2f5c50 100644 --- a/arch/sparc/include/uapi/asm/socket.h +++ b/arch/sparc/include/uapi/asm/socket.h @@ -98,6 +98,8 @@ #define SO_PEERGROUPS 0x003d +#define SO_ZEROCOPY 0x003e + /* Security levels - as per NRL IPv6 - don't actually do anything */ #define SO_SECURITY_AUTHENTICATION 0x5001 #define SO_SECURITY_ENCRYPTION_TRANSPORT 0x5002 diff --git a/arch/xtensa/include/uapi/asm/socket.h b/arch/xtensa/include/uapi/asm/socket.h index 3eed276..2200599 100644 --- a/arch/xtensa/include/uapi/asm/socket.h +++ b/arch/xtensa/include/uapi/asm/socket.h @@ -113,4 +113,6 @@ #define SO_PEERGROUPS 59 +#define SO_ZEROCOPY 60 + #endif /* _XTENSA_SOCKET_H */ |