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authorTom Herbert <tom@herbertland.com>2016-02-24 10:02:52 -0800
committerDavid S. Miller <davem@davemloft.net>2016-02-25 22:01:22 -0500
commita87cb3e48ee86d29868d3f59cfb9ce1a8fa63314 (patch)
tree4002824d66c34364f18019c659aa6adaedb9ab27 /arch
parentnet: ipv6: Make address flushing on ifdown optional (diff)
downloadlinux-dev-a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314.tar.xz
linux-dev-a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314.zip
net: Facility to report route quality of connected sockets
This patch add the SO_CNX_ADVICE socket option (setsockopt only). The purpose is to allow an application to give feedback to the kernel about the quality of the network path for a connected socket. The value argument indicates the type of quality report. For this initial patch the only supported advice is a value of 1 which indicates "bad path, please reroute"-- the action taken by the kernel is to call dst_negative_advice which will attempt to choose a different ECMP route, reset the TX hash for flow label and UDP source port in encapsulation, etc. This facility should be useful for connected UDP sockets where only the application can provide any feedback about path quality. It could also be useful for TCP applications that have additional knowledge about the path outside of the normal TCP control loop. Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
-rw-r--r--arch/alpha/include/uapi/asm/socket.h2
-rw-r--r--arch/avr32/include/uapi/asm/socket.h2
-rw-r--r--arch/frv/include/uapi/asm/socket.h2
-rw-r--r--arch/ia64/include/uapi/asm/socket.h2
-rw-r--r--arch/m32r/include/uapi/asm/socket.h2
-rw-r--r--arch/mips/include/uapi/asm/socket.h2
-rw-r--r--arch/mn10300/include/uapi/asm/socket.h2
-rw-r--r--arch/parisc/include/uapi/asm/socket.h2
-rw-r--r--arch/powerpc/include/uapi/asm/socket.h2
-rw-r--r--arch/s390/include/uapi/asm/socket.h2
-rw-r--r--arch/sparc/include/uapi/asm/socket.h2
-rw-r--r--arch/xtensa/include/uapi/asm/socket.h2
12 files changed, 24 insertions, 0 deletions
diff --git a/arch/alpha/include/uapi/asm/socket.h b/arch/alpha/include/uapi/asm/socket.h
index c5fb9e6bc3a5..9e46d6e656d9 100644
--- a/arch/alpha/include/uapi/asm/socket.h
+++ b/arch/alpha/include/uapi/asm/socket.h
@@ -95,4 +95,6 @@
#define SO_ATTACH_REUSEPORT_CBPF 51
#define SO_ATTACH_REUSEPORT_EBPF 52
+#define SO_CNX_ADVICE 53
+
#endif /* _UAPI_ASM_SOCKET_H */
diff --git a/arch/avr32/include/uapi/asm/socket.h b/arch/avr32/include/uapi/asm/socket.h
index 9de0796240a0..1fd147f09a38 100644
--- a/arch/avr32/include/uapi/asm/socket.h
+++ b/arch/avr32/include/uapi/asm/socket.h
@@ -88,4 +88,6 @@
#define SO_ATTACH_REUSEPORT_CBPF 51
#define SO_ATTACH_REUSEPORT_EBPF 52
+#define SO_CNX_ADVICE 53
+
#endif /* _UAPI__ASM_AVR32_SOCKET_H */
diff --git a/arch/frv/include/uapi/asm/socket.h b/arch/frv/include/uapi/asm/socket.h
index f02e4849ae83..afbc98f02d27 100644
--- a/arch/frv/include/uapi/asm/socket.h
+++ b/arch/frv/include/uapi/asm/socket.h
@@ -88,5 +88,7 @@
#define SO_ATTACH_REUSEPORT_CBPF 51
#define SO_ATTACH_REUSEPORT_EBPF 52
+#define SO_CNX_ADVICE 53
+
#endif /* _ASM_SOCKET_H */
diff --git a/arch/ia64/include/uapi/asm/socket.h b/arch/ia64/include/uapi/asm/socket.h
index bce29166de1b..0018fad9039f 100644
--- a/arch/ia64/include/uapi/asm/socket.h
+++ b/arch/ia64/include/uapi/asm/socket.h
@@ -97,4 +97,6 @@
#define SO_ATTACH_REUSEPORT_CBPF 51
#define SO_ATTACH_REUSEPORT_EBPF 52
+#define SO_CNX_ADVICE 53
+
#endif /* _ASM_IA64_SOCKET_H */
diff --git a/arch/m32r/include/uapi/asm/socket.h b/arch/m32r/include/uapi/asm/socket.h
index 14aa4a6bccf1..5fe42fc7b6c5 100644
--- a/arch/m32r/include/uapi/asm/socket.h
+++ b/arch/m32r/include/uapi/asm/socket.h
@@ -88,4 +88,6 @@
#define SO_ATTACH_REUSEPORT_CBPF 51
#define SO_ATTACH_REUSEPORT_EBPF 52
+#define SO_CNX_ADVICE 53
+
#endif /* _ASM_M32R_SOCKET_H */
diff --git a/arch/mips/include/uapi/asm/socket.h b/arch/mips/include/uapi/asm/socket.h
index 5910fe294e93..2027240aafbb 100644
--- a/arch/mips/include/uapi/asm/socket.h
+++ b/arch/mips/include/uapi/asm/socket.h
@@ -106,4 +106,6 @@
#define SO_ATTACH_REUSEPORT_CBPF 51
#define SO_ATTACH_REUSEPORT_EBPF 52
+#define SO_CNX_ADVICE 53
+
#endif /* _UAPI_ASM_SOCKET_H */
diff --git a/arch/mn10300/include/uapi/asm/socket.h b/arch/mn10300/include/uapi/asm/socket.h
index 58b1aa01ab9f..5129f23a9ee1 100644
--- a/arch/mn10300/include/uapi/asm/socket.h
+++ b/arch/mn10300/include/uapi/asm/socket.h
@@ -88,4 +88,6 @@
#define SO_ATTACH_REUSEPORT_CBPF 51
#define SO_ATTACH_REUSEPORT_EBPF 52
+#define SO_CNX_ADVICE 53
+
#endif /* _ASM_SOCKET_H */
diff --git a/arch/parisc/include/uapi/asm/socket.h b/arch/parisc/include/uapi/asm/socket.h
index f9cf1223422c..9c935d717df9 100644
--- a/arch/parisc/include/uapi/asm/socket.h
+++ b/arch/parisc/include/uapi/asm/socket.h
@@ -87,4 +87,6 @@
#define SO_ATTACH_REUSEPORT_CBPF 0x402C
#define SO_ATTACH_REUSEPORT_EBPF 0x402D
+#define SO_CNX_ADVICE 0x402E
+
#endif /* _UAPI_ASM_SOCKET_H */
diff --git a/arch/powerpc/include/uapi/asm/socket.h b/arch/powerpc/include/uapi/asm/socket.h
index dd54f28ecdec..1672e3398270 100644
--- a/arch/powerpc/include/uapi/asm/socket.h
+++ b/arch/powerpc/include/uapi/asm/socket.h
@@ -95,4 +95,6 @@
#define SO_ATTACH_REUSEPORT_CBPF 51
#define SO_ATTACH_REUSEPORT_EBPF 52
+#define SO_CNX_ADVICE 53
+
#endif /* _ASM_POWERPC_SOCKET_H */
diff --git a/arch/s390/include/uapi/asm/socket.h b/arch/s390/include/uapi/asm/socket.h
index d02e89d14fef..41b51c2f4f1b 100644
--- a/arch/s390/include/uapi/asm/socket.h
+++ b/arch/s390/include/uapi/asm/socket.h
@@ -94,4 +94,6 @@
#define SO_ATTACH_REUSEPORT_CBPF 51
#define SO_ATTACH_REUSEPORT_EBPF 52
+#define SO_CNX_ADVICE 53
+
#endif /* _ASM_SOCKET_H */
diff --git a/arch/sparc/include/uapi/asm/socket.h b/arch/sparc/include/uapi/asm/socket.h
index d270ee91968e..31aede3af088 100644
--- a/arch/sparc/include/uapi/asm/socket.h
+++ b/arch/sparc/include/uapi/asm/socket.h
@@ -84,6 +84,8 @@
#define SO_ATTACH_REUSEPORT_CBPF 0x0035
#define SO_ATTACH_REUSEPORT_EBPF 0x0036
+#define SO_CNX_ADVICE 0x0037
+
/* 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 fd3b96d1153f..81435d995e11 100644
--- a/arch/xtensa/include/uapi/asm/socket.h
+++ b/arch/xtensa/include/uapi/asm/socket.h
@@ -99,4 +99,6 @@
#define SO_ATTACH_REUSEPORT_CBPF 51
#define SO_ATTACH_REUSEPORT_EBPF 52
+#define SO_CNX_ADVICE 53
+
#endif /* _XTENSA_SOCKET_H */