Re: [net-next PATCH 3/5] net: Introduce SO_INCOMING_NAPI_ID

[Eric Dumazet]

On Thu, 2017-03-16 at 11:32 -0700, Alexander Duyck wrote:

>  
> + case SO_INCOMING_NAPI_ID:
> + v.val = sk->sk_napi_id;
> + break;

I guess that here you should filter invalid values.

(So that you no longer need the first patch in this series)

Also, it looks like eBPF will need to get access to skb->napi_id for
efficient SO_REUSEPORT support ?

Thanks.

[net-next PATCH 3/5] net: Introduce SO_INCOMING_NAPI_ID

[Alexander Duyck]

From: Sridhar Samudrala 

This socket option returns the napi id associated with the queue on which
the last frame is received. This information can be used by the apps to
split the incoming flows among the threads based on the Rx queue on which
they are received.

Signed-off-by: Sridhar Samudrala 
Signed-off-by: Alexander Duyck 
---
 arch/alpha/include/uapi/asm/socket.h   |2 ++
 arch/avr32/include/uapi/asm/socket.h   |2 ++
 arch/frv/include/uapi/asm/socket.h |2 ++
 arch/ia64/include/uapi/asm/socket.h|2 ++
 arch/m32r/include/uapi/asm/socket.h|2 ++
 arch/mips/include/uapi/asm/socket.h|2 ++
 arch/mn10300/include/uapi/asm/socket.h |2 ++
 arch/parisc/include/uapi/asm/socket.h  |2 ++
 arch/powerpc/include/uapi/asm/socket.h |2 ++
 arch/s390/include/uapi/asm/socket.h|2 ++
 arch/sparc/include/uapi/asm/socket.h   |2 ++
 arch/xtensa/include/uapi/asm/socket.h  |2 ++
 include/uapi/asm-generic/socket.h  |2 ++
 net/core/sock.c|4 
 14 files changed, 30 insertions(+)

diff --git a/arch/alpha/include/uapi/asm/socket.h 
b/arch/alpha/include/uapi/asm/socket.h
index afc901b7a6f6..c90a4eb8fe2d 100644
--- a/arch/alpha/include/uapi/asm/socket.h
+++ b/arch/alpha/include/uapi/asm/socket.h
@@ -99,4 +99,6 @@
 
 #define SCM_TIMESTAMPING_OPT_STATS 54
 
+#define SO_INCOMING_NAPI_ID55
+
 #endif /* _UAPI_ASM_SOCKET_H */
diff --git a/arch/avr32/include/uapi/asm/socket.h 
b/arch/avr32/include/uapi/asm/socket.h
index 5a650426f357..bee51e585ff6 100644
--- a/arch/avr32/include/uapi/asm/socket.h
+++ b/arch/avr32/include/uapi/asm/socket.h
@@ -92,4 +92,6 @@
 
 #define SCM_TIMESTAMPING_OPT_STATS 54
 
+#define SO_INCOMING_NAPI_ID55
+
 #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 81e03530ed39..4ac94eff4a64 100644
--- a/arch/frv/include/uapi/asm/socket.h
+++ b/arch/frv/include/uapi/asm/socket.h
@@ -92,5 +92,7 @@
 
 #define SCM_TIMESTAMPING_OPT_STATS 54
 
+#define SO_INCOMING_NAPI_ID55
+
 #endif /* _ASM_SOCKET_H */
 
diff --git a/arch/ia64/include/uapi/asm/socket.h 
b/arch/ia64/include/uapi/asm/socket.h
index 57feb0c1f7d7..1bb0c810495e 100644
--- a/arch/ia64/include/uapi/asm/socket.h
+++ b/arch/ia64/include/uapi/asm/socket.h
@@ -101,4 +101,6 @@
 
 #define SCM_TIMESTAMPING_OPT_STATS 54
 
+#define SO_INCOMING_NAPI_ID55
+
 #endif /* _ASM_IA64_SOCKET_H */
diff --git a/arch/m32r/include/uapi/asm/socket.h 
b/arch/m32r/include/uapi/asm/socket.h
index 5853f8e92c20..234119518dc1 100644
--- a/arch/m32r/include/uapi/asm/socket.h
+++ b/arch/m32r/include/uapi/asm/socket.h
@@ -92,4 +92,6 @@
 
 #define SCM_TIMESTAMPING_OPT_STATS 54
 
+#define SO_INCOMING_NAPI_ID55
+
 #endif /* _ASM_M32R_SOCKET_H */
diff --git a/arch/mips/include/uapi/asm/socket.h 
b/arch/mips/include/uapi/asm/socket.h
index 566ecdcb5b4b..0b6d2f0b82b4 100644
--- a/arch/mips/include/uapi/asm/socket.h
+++ b/arch/mips/include/uapi/asm/socket.h
@@ -110,4 +110,6 @@
 
 #define SCM_TIMESTAMPING_OPT_STATS 54
 
+#define SO_INCOMING_NAPI_ID55
+
 #endif /* _UAPI_ASM_SOCKET_H */
diff --git a/arch/mn10300/include/uapi/asm/socket.h 
b/arch/mn10300/include/uapi/asm/socket.h
index 0e12527c4b0e..881fa88cbf60 100644
--- a/arch/mn10300/include/uapi/asm/socket.h
+++ b/arch/mn10300/include/uapi/asm/socket.h
@@ -92,4 +92,6 @@
 
 #define SCM_TIMESTAMPING_OPT_STATS 54
 
+#define SO_INCOMING_NAPI_ID55
+
 #endif /* _ASM_SOCKET_H */
diff --git a/arch/parisc/include/uapi/asm/socket.h 
b/arch/parisc/include/uapi/asm/socket.h
index 7a109b73ddf7..70d6f5ffebef 100644
--- a/arch/parisc/include/uapi/asm/socket.h
+++ b/arch/parisc/include/uapi/asm/socket.h
@@ -91,4 +91,6 @@
 
 #define SCM_TIMESTAMPING_OPT_STATS 0x402F
 
+#define SO_INCOMING_NAPI_ID0x4030
+
 #endif /* _UAPI_ASM_SOCKET_H */
diff --git a/arch/powerpc/include/uapi/asm/socket.h 
b/arch/powerpc/include/uapi/asm/socket.h
index 44583a52f882..8188f0ebae5f 100644
--- a/arch/powerpc/include/uapi/asm/socket.h
+++ b/arch/powerpc/include/uapi/asm/socket.h
@@ -99,4 +99,6 @@
 
 #define SCM_TIMESTAMPING_OPT_STATS 54
 
+#define SO_INCOMING_NAPI_ID55
+
 #endif /* _ASM_POWERPC_SOCKET_H */
diff --git a/arch/s390/include/uapi/asm/socket.h 
b/arch/s390/include/uapi/asm/socket.h
index b24a64cbfeb1..22ef97b26377 100644
--- a/arch/s390/include/uapi/asm/socket.h
+++ b/arch/s390/include/uapi/asm/socket.h
@@ -98,4 +98,6 @@
 
 #define SCM_TIMESTAMPING_OPT_STATS 54
 
+#define SO_INCOMING_NAPI_ID55
+
 #endif /* _ASM_SOCKET_H */
diff --git a/arch/sparc/include/uapi/asm/socket.h 
b/arch/sparc/include/uapi/asm/socket.h
index a25dc32f5d6a..6b7e10019763 100644
--- a/arch/sparc/include/uapi/asm/socket.h
+++ b/arch/sparc/include/uapi/asm/socket.h
@@ -88,6 +88,8 @@
 
 #define SCM_TIMESTAMPING_OPT_STATS 0x0038
 
+#define SO_INCOMING_NAPI_ID