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: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/alpha/include/asm/socket.h b/arch/alpha/include/asm/socket.h
index 3641ec1..2f8b4d3 100644
--- a/arch/alpha/include/asm/socket.h
+++ b/arch/alpha/include/asm/socket.h
@@ -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
diff --git a/arch/arm/include/asm/socket.h b/arch/arm/include/asm/socket.h
index 537de4e..7f47454 100644
--- a/arch/arm/include/asm/socket.h
+++ b/arch/arm/include/asm/socket.h
@@ -57,4 +57,6 @@
#define SO_TIMESTAMPING 37
#define SCM_TIMESTAMPING SO_TIMESTAMPING
+#define SO_PROTOCOL 38
+
#endif /* _ASM_SOCKET_H */
diff --git a/arch/avr32/include/asm/socket.h b/arch/avr32/include/asm/socket.h
index 04c8606..6af2866 100644
--- a/arch/avr32/include/asm/socket.h
+++ b/arch/avr32/include/asm/socket.h
@@ -57,4 +57,6 @@
#define SO_TIMESTAMPING 37
#define SCM_TIMESTAMPING SO_TIMESTAMPING
+#define SO_PROTOCOL 38
+
#endif /* __ASM_AVR32_SOCKET_H */
diff --git a/arch/cris/include/asm/socket.h b/arch/cris/include/asm/socket.h
index d5cf740..f3859fb 100644
--- a/arch/cris/include/asm/socket.h
+++ b/arch/cris/include/asm/socket.h
@@ -59,6 +59,8 @@
#define SO_TIMESTAMPING 37
#define SCM_TIMESTAMPING SO_TIMESTAMPING
+#define SO_PROTOCOL 38
+
#endif /* _ASM_SOCKET_H */
diff --git a/arch/frv/include/asm/socket.h b/arch/frv/include/asm/socket.h
index 57c3d40..8dab348 100644
--- a/arch/frv/include/asm/socket.h
+++ b/arch/frv/include/asm/socket.h
@@ -57,5 +57,7 @@
#define SO_TIMESTAMPING 37
#define SCM_TIMESTAMPING SO_TIMESTAMPING
+#define SO_PROTOCOL 38
+
#endif /* _ASM_SOCKET_H */
diff --git a/arch/h8300/include/asm/socket.h b/arch/h8300/include/asm/socket.h
index 602518a7..ba770d0 100644
--- a/arch/h8300/include/asm/socket.h
+++ b/arch/h8300/include/asm/socket.h
@@ -57,4 +57,6 @@
#define SO_TIMESTAMPING 37
#define SCM_TIMESTAMPING SO_TIMESTAMPING
+#define SO_PROTOCOL 38
+
#endif /* _ASM_SOCKET_H */
diff --git a/arch/ia64/include/asm/socket.h b/arch/ia64/include/asm/socket.h
index 7454212..091cd9d 100644
--- a/arch/ia64/include/asm/socket.h
+++ b/arch/ia64/include/asm/socket.h
@@ -66,4 +66,6 @@
#define SO_TIMESTAMPING 37
#define SCM_TIMESTAMPING SO_TIMESTAMPING
+#define SO_PROTOCOL 38
+
#endif /* _ASM_IA64_SOCKET_H */
diff --git a/arch/m32r/include/asm/socket.h b/arch/m32r/include/asm/socket.h
index be7ed58..d36f592 100644
--- a/arch/m32r/include/asm/socket.h
+++ b/arch/m32r/include/asm/socket.h
@@ -57,4 +57,6 @@
#define SO_TIMESTAMPING 37
#define SCM_TIMESTAMPING SO_TIMESTAMPING
+#define SO_PROTOCOL 38
+
#endif /* _ASM_M32R_SOCKET_H */
diff --git a/arch/m68k/include/asm/socket.h b/arch/m68k/include/asm/socket.h
index ca87f93..060cb7e 100644
--- a/arch/m68k/include/asm/socket.h
+++ b/arch/m68k/include/asm/socket.h
@@ -57,4 +57,6 @@
#define SO_TIMESTAMPING 37
#define SCM_TIMESTAMPING SO_TIMESTAMPING
+#define SO_PROTOCOL 38
+
#endif /* _ASM_SOCKET_H */
diff --git a/arch/microblaze/include/asm/socket.h b/arch/microblaze/include/asm/socket.h
index 8259368..96bf8bf 100644
--- a/arch/microblaze/include/asm/socket.h
+++ b/arch/microblaze/include/asm/socket.h
@@ -66,4 +66,6 @@
#define SO_TIMESTAMPING 37
#define SCM_TIMESTAMPING SO_TIMESTAMPING
+#define SO_PROTOCOL 38
+
#endif /* _ASM_MICROBLAZE_SOCKET_H */
diff --git a/arch/mips/include/asm/socket.h b/arch/mips/include/asm/socket.h
index 2abca17..289ce5f 100644
--- a/arch/mips/include/asm/socket.h
+++ b/arch/mips/include/asm/socket.h
@@ -42,6 +42,7 @@
#define SO_SNDTIMEO 0x1005 /* send timeout */
#define SO_RCVTIMEO 0x1006 /* receive timeout */
#define SO_ACCEPTCONN 0x1009
+#define SO_PROTOCOL 0x1028 /* protocol type */
/* linux-specific, might as well be the same as on i386 */
#define SO_NO_CHECK 11
diff --git a/arch/mn10300/include/asm/socket.h b/arch/mn10300/include/asm/socket.h
index fb5daf4..19d7cf7 100644
--- a/arch/mn10300/include/asm/socket.h
+++ b/arch/mn10300/include/asm/socket.h
@@ -57,4 +57,6 @@
#define SO_TIMESTAMPING 37
#define SCM_TIMESTAMPING SO_TIMESTAMPING
+#define SO_PROTOCOL 38
+
#endif /* _ASM_SOCKET_H */
diff --git a/arch/parisc/include/asm/socket.h b/arch/parisc/include/asm/socket.h
index 885472b..a658b09 100644
--- a/arch/parisc/include/asm/socket.h
+++ b/arch/parisc/include/asm/socket.h
@@ -24,6 +24,7 @@
#define SO_RCVTIMEO 0x1006
#define SO_ERROR 0x1007
#define SO_TYPE 0x1008
+#define SO_PROTOCOL 0x1028
#define SO_PEERNAME 0x2000
#define SO_NO_CHECK 0x400b
diff --git a/arch/powerpc/include/asm/socket.h b/arch/powerpc/include/asm/socket.h
index 1e5cfad..609049d 100644
--- a/arch/powerpc/include/asm/socket.h
+++ b/arch/powerpc/include/asm/socket.h
@@ -64,4 +64,6 @@
#define SO_TIMESTAMPING 37
#define SCM_TIMESTAMPING SO_TIMESTAMPING
+#define SO_PROTOCOL 38
+
#endif /* _ASM_POWERPC_SOCKET_H */
diff --git a/arch/s390/include/asm/socket.h b/arch/s390/include/asm/socket.h
index 02330c5..65baa9a 100644
--- a/arch/s390/include/asm/socket.h
+++ b/arch/s390/include/asm/socket.h
@@ -65,4 +65,6 @@
#define SO_TIMESTAMPING 37
#define SCM_TIMESTAMPING SO_TIMESTAMPING
+#define SO_PROTOCOL 38
+
#endif /* _ASM_SOCKET_H */
diff --git a/arch/sparc/include/asm/socket.h b/arch/sparc/include/asm/socket.h
index 982a12f..9cbbfaf 100644
--- a/arch/sparc/include/asm/socket.h
+++ b/arch/sparc/include/asm/socket.h
@@ -29,6 +29,8 @@
#define SO_RCVBUFFORCE 0x100b
#define SO_ERROR 0x1007
#define SO_TYPE 0x1008
+#define SO_PROTOCOL 0x1028
+
/* Linux specific, keep the same. */
#define SO_NO_CHECK 0x000b
diff --git a/arch/x86/include/asm/socket.h b/arch/x86/include/asm/socket.h
index ca8bf2c..1077d25 100644
--- a/arch/x86/include/asm/socket.h
+++ b/arch/x86/include/asm/socket.h
@@ -57,4 +57,6 @@
#define SO_TIMESTAMPING 37
#define SCM_TIMESTAMPING SO_TIMESTAMPING
+#define SO_PROTOCOL 38
+
#endif /* _ASM_X86_SOCKET_H */
diff --git a/arch/xtensa/include/asm/socket.h b/arch/xtensa/include/asm/socket.h
index dd1a7a4..e47f172 100644
--- a/arch/xtensa/include/asm/socket.h
+++ b/arch/xtensa/include/asm/socket.h
@@ -68,4 +68,6 @@
#define SO_TIMESTAMPING 37
#define SCM_TIMESTAMPING SO_TIMESTAMPING
+#define SO_PROTOCOL 38
+
#endif /* _XTENSA_SOCKET_H */