net: flag sockets supporting msghdr originated zerocopy

We need an efficient way in io_uring to check whether a socket supports zerocopy with msghdr provided ubuf_info. Add a new flag into the struct socket flags fields.

Pavel Begunkov committed 4 years ago

Commit e993ffe1 parent 996d3ef3 files · +3 −0Browse files

Showing the changes to include/linux (1 of 3 files). Show all

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include/linux/net.h+1−0

@@ -41,6 +41,7 @@ struct net; · 40 unmodified lines
41	#define SOCK_NOSPACE 2	41	#define SOCK_NOSPACE 2
42	#define SOCK_PASSCRED 3	42	#define SOCK_PASSCRED 3
43	#define SOCK_PASSSEC 4	43	#define SOCK_PASSSEC 4
		44	#define SOCK_SUPPORT_ZC 5
44		45
45	#ifndef ARCH_HAS_SOCKET_TYPES	46	#ifndef ARCH_HAS_SOCKET_TYPES
46	/**	47	/**