virtio:d00000001v00001AF4
}
358 f }
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936 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _LINUX_IN_ROUTE_H
#define _LINUX_IN_ROUTE_H
/* IPv4 routing cache flags */
#define RTCF_DEAD RTNH_F_DEAD
#define RTCF_ONLINK RTNH_F_ONLINK
/* Obsolete flag. About to be deleted */
#define RTCF_NOPMTUDISC RTM_F_NOPMTUDISC
#define RTCF_NOTIFY 0x00010000
#define RTCF_DIRECTDST 0x00020000 /* unused */
#define RTCF_REDIRECTED 0x00040000
#define RTCF_TPROXY 0x00080000 /* unused */
#define RTCF_FAST 0x00200000 /* unused */
#define RTCF_MASQ 0x00400000 /* unused */
#define RTCF_SNAT 0x00800000 /* unused */
#define RTCF_DOREDIRECT 0x01000000
#define RTCF_DIRECTSRC 0x04000000
#define RTCF_DNAT 0x08000000
#define RTCF_BROADCAST 0x10000000
#define RTCF_MULTICAST 0x20000000
#define RTCF_REJECT 0x40000000 /* unused */
#define RTCF_LOCAL 0x80000000
#define RTCF_NAT (RTCF_DNAT|RTCF_SNAT)
#define RT_TOS(tos) ((tos)&IPTOS_TOS_MASK)
#endif /* _LINUX_IN_ROUTE_H */
? /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_JUMP_LABEL_H
#define _LINUX_JUMP_LABEL_H
/*
* Jump label support
*
* Copyright (C) 2009-2012 Jason Baron
* Copyright (C) 2011-2012 Red Hat, Inc., Peter Zijlstra
*
* DEPRECATED API:
*
* The use of 'struct static_key' directly, is now DEPRECATED. In addition
* static_key_{true,false}() is also DEPRECATED. IE DO NOT use the following:
*
* struct static_key false = STATIC_KEY_INIT_FALSE;
* struct static_key true = STATIC_KEY_INIT_TRUE;
* static_key_true()
* static_key_false()
*
* The updated API replacements are:
*
* DEFINE_STATIC_KEY_TRUE(key);
* DEFINE_STATIC_KEY_FALSE(key);
* DEFINE_STATIC_KEY_ARRAY_TRUE(keys, count);
* DEFINE_STATIC_KEY_ARRAY_FALSE(keys, count);
* static_branch_likely()
* static_branch_unlikely()
*
* Jump labels provide an interface to generate dynamic branches using
* self-modifying code. Assuming toolchain and architecture support, if we
* define a "key" that is initially false via "DEFINE_STATIC_KEY_FALSE(key)",
* an "if (static_branch_unlikely(&key))" statement is an unconditional branch
* (which defaults to false - and the true block is placed out of line).
* Similarly, we can define an initially true key via
* "DEFINE_STATIC_KEY_TRUE(key)", and use it in the same
* "if (static_branch_unlikely(&key))", in which case we will generate an
* unconditional branch to the out-of-line true branch. Keys that are
* initially true or false can be using in both static_branch_unlikely()
* and static_branch_likely() statements.
*
* At runtime we can change the branch target by setting the key
* to true via a call to static_branch_enable(), or false using
* static_branch_disable(). If the direction of the branch is switched by
* these calls then we run-time modify the branch target via a
* no-op -> jump or jump -> no-op conversion. For example, for an
* initially false key that is used in an "if (static_branch_unlikely(&key))"
* statement, setting the key to true requires us to patch in a jump
* to the out-of-line of true branch.
*
* In addition to static_branch_{enable,disable}, we can also reference count
* the key or branch direction via static_branch_{inc,dec}. Thus,
* static_branch_inc() can be thought of as a 'make more true' and
* static_branch_dec() as a 'make more false'.
*
* Since this relies on modifying code, the branch modifying functions
* must be considered absolute slow paths (machine wide synchronization etc.).
* OTOH, since the affected branches are unconditional, their runtime overhead
* will be absolutely minimal, esp. in the default (off) case where the total
* effect is a single NOP