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Commit 49c794e9 authored by Jan Engelhardt's avatar Jan Engelhardt Committed by David S. Miller
Browse files

net: implement a SO_PROTOCOL getsockoption 



Similar to SO_TYPE returning the socket type, SO_PROTOCOL allows to
retrieve the protocol used with a given socket.

I am not quite sure why we have that-many copies of socket.h, and why
the values are not the same on all arches either, but for where hex
numbers dominate, I use 0x1029 for SO_PROTOCOL as that seems to be
the next free unused number across a bunch of operating systems, or
so Google results make me want to believe. SO_PROTOCOL for others
just uses the next free Linux number, 38.

Signed-off-by: default avatarJan Engelhardt <jengelh@medozas.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c1c00ab8

arch/alpha/include/asm/socket.h

+1 −0
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ 
#define	SO_RCVTIMEO	0x1012

#define	SO_SNDTIMEO	0x1013

#define SO_ACCEPTCONN	0x1014

#define SO_PROTOCOL	0x1028



/* linux-specific, might as well be the same as on i386 */

#define SO_NO_CHECK	11

arch/arm/include/asm/socket.h

+2 −0
Original line number Diff line number Diff line
@@ -57,4 +57,6 @@ 
#define SO_TIMESTAMPING		37

#define SCM_TIMESTAMPING	SO_TIMESTAMPING



#define SO_PROTOCOL		38



#endif /* _ASM_SOCKET_H */

arch/avr32/include/asm/socket.h

+2 −0
Original line number Diff line number Diff line
@@ -57,4 +57,6 @@ 
#define SO_TIMESTAMPING		37

#define SCM_TIMESTAMPING	SO_TIMESTAMPING



#define SO_PROTOCOL		38



#endif /* __ASM_AVR32_SOCKET_H */

arch/cris/include/asm/socket.h

+2 −0
Original line number Diff line number Diff line
@@ -59,6 +59,8 @@ 
#define SO_TIMESTAMPING		37

#define SCM_TIMESTAMPING	SO_TIMESTAMPING



#define SO_PROTOCOL		38



#endif /* _ASM_SOCKET_H */

arch/frv/include/asm/socket.h

+2 −0
Original line number Diff line number Diff line
@@ -57,5 +57,7 @@ 
#define SO_TIMESTAMPING		37

#define SCM_TIMESTAMPING	SO_TIMESTAMPING



#define SO_PROTOCOL		38



#endif /* _ASM_SOCKET_H */