From ea02f9411d9faa3553ed09ce0ec9f00ceae9885e Mon Sep 17 00:00:00 2001 From: Michal Sekletar Date: Fri, 17 Jan 2014 17:09:45 +0100 Subject: net: introduce SO_BPF_EXTENSIONS For user space packet capturing libraries such as libpcap, there's currently only one way to check which BPF extensions are supported by the kernel, that is, commit aa1113d9f85d ("net: filter: return -EINVAL if BPF_S_ANC* operation is not supported"). For querying all extensions at once this might be rather inconvenient. Therefore, this patch introduces a new option which can be used as an argument for getsockopt(), and allows one to obtain information about which BPF extensions are supported by the current kernel. As David Miller suggests, we do not need to define any bits right now and status quo can just return 0 in order to state that this versions supports SKF_AD_PROTOCOL up to SKF_AD_PAY_OFFSET. Later additions to BPF extensions need to add their bits to the bpf_tell_extensions() function, as documented in the comment. Signed-off-by: Michal Sekletar Cc: David Miller Reviewed-by: Daniel Borkmann Signed-off-by: David S. Miller --- include/uapi/asm-generic/socket.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/uapi/asm-generic') diff --git a/include/uapi/asm-generic/socket.h b/include/uapi/asm-generic/socket.h index 38f14d0264c3..ea0796bdcf88 100644 --- a/include/uapi/asm-generic/socket.h +++ b/include/uapi/asm-generic/socket.h @@ -80,4 +80,6 @@ #define SO_MAX_PACING_RATE 47 +#define SO_BPF_EXTENSIONS 48 + #endif /* __ASM_GENERIC_SOCKET_H */ -- cgit v1.2.3 From 071ed2456f79722d0a54f51717e66aacbc7a5d26 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Fri, 27 Dec 2013 14:14:19 -0800 Subject: uapi, asm-generic: Use __kernel_ulong_t in uapi struct ipc64_perm x32 IPC system call is the same as x86-64 IPC system call, which uses 64-bit integer for unsigned long in struct ipc64_perm. But x32 long is 32 bit. This patch replaces unsigned long in uapi struct ipc64_perm with __kernel_ulong_t. Signed-off-by: H.J. Lu Link: http://lkml.kernel.org/r/1388182464-28428-4-git-send-email-hjl.tools@gmail.com Signed-off-by: H. Peter Anvin --- include/uapi/asm-generic/ipcbuf.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/uapi/asm-generic') diff --git a/include/uapi/asm-generic/ipcbuf.h b/include/uapi/asm-generic/ipcbuf.h index 76982b2a1b58..3dbcc1e771c0 100644 --- a/include/uapi/asm-generic/ipcbuf.h +++ b/include/uapi/asm-generic/ipcbuf.h @@ -27,8 +27,8 @@ struct ipc64_perm { unsigned char __pad1[4 - sizeof(__kernel_mode_t)]; unsigned short seq; unsigned short __pad2; - unsigned long __unused1; - unsigned long __unused2; + __kernel_ulong_t __unused1; + __kernel_ulong_t __unused2; }; #endif /* __ASM_GENERIC_IPCBUF_H */ -- cgit v1.2.3 From b9cd5ca22d6739c61655d4fcf8b29669d5d177a3 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Fri, 27 Dec 2013 14:14:21 -0800 Subject: uapi: Use __kernel_ulong_t in struct msqid64_ds Both x32 and x86-64 use the same struct msqid64_ds for system calls. But x32 long is 32-bit. This patch replaces unsigned long with __kernel_ulong_t in struct msqid64_ds. Signed-off-by: H.J. Lu Link: http://lkml.kernel.org/r/1388182464-28428-6-git-send-email-hjl.tools@gmail.com Signed-off-by: H. Peter Anvin --- include/uapi/asm-generic/msgbuf.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'include/uapi/asm-generic') diff --git a/include/uapi/asm-generic/msgbuf.h b/include/uapi/asm-generic/msgbuf.h index aec850d9159e..f55ecc43c60f 100644 --- a/include/uapi/asm-generic/msgbuf.h +++ b/include/uapi/asm-generic/msgbuf.h @@ -35,13 +35,13 @@ struct msqid64_ds { #if __BITS_PER_LONG != 64 unsigned long __unused3; #endif - unsigned long msg_cbytes; /* current number of bytes on queue */ - unsigned long msg_qnum; /* number of messages in queue */ - unsigned long msg_qbytes; /* max number of bytes on queue */ + __kernel_ulong_t msg_cbytes; /* current number of bytes on queue */ + __kernel_ulong_t msg_qnum; /* number of messages in queue */ + __kernel_ulong_t msg_qbytes; /* max number of bytes on queue */ __kernel_pid_t msg_lspid; /* pid of last msgsnd */ __kernel_pid_t msg_lrpid; /* last receive pid */ - unsigned long __unused4; - unsigned long __unused5; + __kernel_ulong_t __unused4; + __kernel_ulong_t __unused5; }; #endif /* __ASM_GENERIC_MSGBUF_H */ -- cgit v1.2.3 From f8dcdf0130d3ba34f8f7531af7c45616efe1e32e Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Fri, 27 Dec 2013 14:14:23 -0800 Subject: uapi: Use __kernel_ulong_t in shmid64_ds/shminfo64/shm_info Both x32 and x86-64 use the same struct shmid64_ds/shminfo64/shm_info for system calls. But x32 long is 32-bit. This patch replaces unsigned long with __kernel_ulong_t in struct shmid64_ds/shminfo64/shm_info. Signed-off-by: H.J. Lu Link: http://lkml.kernel.org/r/1388182464-28428-8-git-send-email-hjl.tools@gmail.com Signed-off-by: H. Peter Anvin --- include/uapi/asm-generic/shmbuf.h | 24 ++++++++++++------------ include/uapi/linux/shm.h | 10 +++++----- 2 files changed, 17 insertions(+), 17 deletions(-) (limited to 'include/uapi/asm-generic') diff --git a/include/uapi/asm-generic/shmbuf.h b/include/uapi/asm-generic/shmbuf.h index 5768fa60ac82..7e9fb2f0853b 100644 --- a/include/uapi/asm-generic/shmbuf.h +++ b/include/uapi/asm-generic/shmbuf.h @@ -39,21 +39,21 @@ struct shmid64_ds { #endif __kernel_pid_t shm_cpid; /* pid of creator */ __kernel_pid_t shm_lpid; /* pid of last operator */ - unsigned long shm_nattch; /* no. of current attaches */ - unsigned long __unused4; - unsigned long __unused5; + __kernel_ulong_t shm_nattch; /* no. of current attaches */ + __kernel_ulong_t __unused4; + __kernel_ulong_t __unused5; }; struct shminfo64 { - unsigned long shmmax; - unsigned long shmmin; - unsigned long shmmni; - unsigned long shmseg; - unsigned long shmall; - unsigned long __unused1; - unsigned long __unused2; - unsigned long __unused3; - unsigned long __unused4; + __kernel_ulong_t shmmax; + __kernel_ulong_t shmmin; + __kernel_ulong_t shmmni; + __kernel_ulong_t shmseg; + __kernel_ulong_t shmall; + __kernel_ulong_t __unused1; + __kernel_ulong_t __unused2; + __kernel_ulong_t __unused3; + __kernel_ulong_t __unused4; }; #endif /* __ASM_GENERIC_SHMBUF_H */ diff --git a/include/uapi/linux/shm.h b/include/uapi/linux/shm.h index ec36fa1a83a4..78b69413f582 100644 --- a/include/uapi/linux/shm.h +++ b/include/uapi/linux/shm.h @@ -68,11 +68,11 @@ struct shminfo { struct shm_info { int used_ids; - unsigned long shm_tot; /* total allocated shm */ - unsigned long shm_rss; /* total resident shm */ - unsigned long shm_swp; /* total swapped shm */ - unsigned long swap_attempts; - unsigned long swap_successes; + __kernel_ulong_t shm_tot; /* total allocated shm */ + __kernel_ulong_t shm_rss; /* total resident shm */ + __kernel_ulong_t shm_swp; /* total swapped shm */ + __kernel_ulong_t swap_attempts; + __kernel_ulong_t swap_successes; }; -- cgit v1.2.3 From 0c79a8e29b5fcbcbfd611daf9d500cfad8370fcf Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Thu, 23 Jan 2014 15:53:43 -0800 Subject: asm/types.h: Remove include/asm-generic/int-l64.h Now all 64-bit architectures have been converted to int-ll64.h, we can remove int-l64.h in kernelspace. For backwards compatibility, alpha, ia64, mips64, and powerpc64 still use int-l64.h in userspace. This is the (reworked for UAPI) non-documentation part of more than two year old "asm/types.h: All architectures use int-ll64.h in kernelspace" (https://lkml.org/lkml/2011/8/13/104) Since (from include/uapi/asm-generic/types.h) is used for both kernel and user space, include/asm-generic/int-ll64.h cannot just become include/asm-generic/types.h, as Arnd suggested. Signed-off-by: Geert Uytterhoeven Acked-by: Arnd Bergmann Cc: Al Viro Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-generic/int-l64.h | 49 ---------------------------------------- include/uapi/asm-generic/types.h | 3 +-- 2 files changed, 1 insertion(+), 51 deletions(-) delete mode 100644 include/asm-generic/int-l64.h (limited to 'include/uapi/asm-generic') diff --git a/include/asm-generic/int-l64.h b/include/asm-generic/int-l64.h deleted file mode 100644 index 27d4ec0dfce0..000000000000 --- a/include/asm-generic/int-l64.h +++ /dev/null @@ -1,49 +0,0 @@ -/* - * asm-generic/int-l64.h - * - * Integer declarations for architectures which use "long" - * for 64-bit types. - */ -#ifndef _ASM_GENERIC_INT_L64_H -#define _ASM_GENERIC_INT_L64_H - -#include - - -#ifndef __ASSEMBLY__ - -typedef signed char s8; -typedef unsigned char u8; - -typedef signed short s16; -typedef unsigned short u16; - -typedef signed int s32; -typedef unsigned int u32; - -typedef signed long s64; -typedef unsigned long u64; - -#define S8_C(x) x -#define U8_C(x) x ## U -#define S16_C(x) x -#define U16_C(x) x ## U -#define S32_C(x) x -#define U32_C(x) x ## U -#define S64_C(x) x ## L -#define U64_C(x) x ## UL - -#else /* __ASSEMBLY__ */ - -#define S8_C(x) x -#define U8_C(x) x -#define S16_C(x) x -#define U16_C(x) x -#define S32_C(x) x -#define U32_C(x) x -#define S64_C(x) x -#define U64_C(x) x - -#endif /* __ASSEMBLY__ */ - -#endif /* _ASM_GENERIC_INT_L64_H */ diff --git a/include/uapi/asm-generic/types.h b/include/uapi/asm-generic/types.h index bd39806013b5..a3877926b0d4 100644 --- a/include/uapi/asm-generic/types.h +++ b/include/uapi/asm-generic/types.h @@ -1,8 +1,7 @@ #ifndef _ASM_GENERIC_TYPES_H #define _ASM_GENERIC_TYPES_H /* - * int-ll64 is used practically everywhere now, - * so use it as a reasonable default. + * int-ll64 is used everywhere now. */ #include -- cgit v1.2.3