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sock: introduce SO_MEMINFO getsockopt

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Allows reading of SK_MEMINFO_VARS via socket option. This way an
application can get all meminfo related information in single socket
option call instead of multiple calls.

Adds helper function, sk_get_meminfo(), and uses that for both
getsockopt and sock_diag_put_meminfo().

Suggested by Eric Dumazet.

Signed-off-by: Josh Hunt <johunt@akamai.com>
Reviewed-by: Jason Baron <jbaron@akamai.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Josh Hunt
2017-03-20 15:22:03 -04:00
committed by David S. Miller
parent c7cd4c9bf8
commit a2d133b1d4
16 changed files with 60 additions and 9 deletions
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2
arch/sparc/include/uapi/asm/socket.h
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@@ -88,6 +88,8 @@
#define SCM_TIMESTAMPING_OPT_STATS 0x0038
#define SO_MEMINFO 0x0039
/* Security levels - as per NRL IPv6 - don't actually do anything */
#define SO_SECURITY_AUTHENTICATION 0x5001
#define SO_SECURITY_ENCRYPTION_TRANSPORT 0x5002