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MFp4 bz_ipv6_fast:

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Introduce in6_getscope() to allow more effective checksum
  computations without the need to copy the address to clear the
  scope.

  Sponsored by:	The FreeBSD Foundation
  Sponsored by:	iXsystems

Reviewed by:	gnn (as part of the whole)
MFC After:	3 days
This commit is contained in:
Bjoern A. Zeeb 2012-05-24 16:30:13 +00:00
parent f9b897ba2e
commit 0edc703a02
2 changed files with 14 additions and 0 deletions
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13
sys/netinet6/scope6.c
View File

@ -494,3 +494,16 @@ in6_clearscope(struct in6_addr *in6)
return (modified);
}
/*
* Return the scope identifier or zero.
*/
uint16_t
in6_getscope(struct in6_addr *in6)
{
if (IN6_IS_SCOPE_LINKLOCAL(in6) || IN6_IS_ADDR_MC_INTFACELOCAL(in6))
return (in6->s6_addr16[1]);
return (0);
}

1
sys/netinet6/scope6_var.h
View File

@ -54,6 +54,7 @@ int sa6_embedscope __P((struct sockaddr_in6 *, int));
int sa6_recoverscope __P((struct sockaddr_in6 *));
int in6_setscope __P((struct in6_addr *, struct ifnet *, u_int32_t *));
int in6_clearscope __P((struct in6_addr *));
uint16_t in6_getscope(struct in6_addr *);
#endif /* _KERNEL */
#endif /* _NETINET6_SCOPE6_VAR_H_ */