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26859240e4
Add the SO_TXREHASH socket option to control hash rethink behavior per socket. When default mode is set, sockets disable rehash at initialization and use sysctl option when entering listen state. setsockopt() overrides default behavior. Signed-off-by: Akhmat Karakotov <hmukos@yandex-team.ru> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
38 lines
1 KiB
C
38 lines
1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _UAPI_LINUX_SOCKET_H
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#define _UAPI_LINUX_SOCKET_H
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/*
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* Desired design of maximum size and alignment (see RFC2553)
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*/
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#define _K_SS_MAXSIZE 128 /* Implementation specific max size */
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typedef unsigned short __kernel_sa_family_t;
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/*
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* The definition uses anonymous union and struct in order to control the
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* default alignment.
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*/
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struct __kernel_sockaddr_storage {
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union {
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struct {
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__kernel_sa_family_t ss_family; /* address family */
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/* Following field(s) are implementation specific */
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char __data[_K_SS_MAXSIZE - sizeof(unsigned short)];
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/* space to achieve desired size, */
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/* _SS_MAXSIZE value minus size of ss_family */
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};
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void *__align; /* implementation specific desired alignment */
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};
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};
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#define SOCK_SNDBUF_LOCK 1
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#define SOCK_RCVBUF_LOCK 2
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#define SOCK_BUF_LOCK_MASK (SOCK_SNDBUF_LOCK | SOCK_RCVBUF_LOCK)
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#define SOCK_TXREHASH_DEFAULT ((u8)-1)
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#define SOCK_TXREHASH_DISABLED 0
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#define SOCK_TXREHASH_ENABLED 1
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#endif /* _UAPI_LINUX_SOCKET_H */
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