Commit be3ad6b0 authored by Jeff Layton's avatar Jeff Layton Committed by J. Bruce Fields
Browse files

sunrpc: add common routine for copying address portion of a sockaddr 



Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
Acked-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@citi.umich.edu>
parent 4516fc04

include/linux/sunrpc/clnt.h

+50 −0
Original line number Diff line number Diff line
@@ -198,6 +198,17 @@ static inline bool __rpc_cmp_addr4(const struct sockaddr *sap1, 
	return sin1->sin_addr.s_addr == sin2->sin_addr.s_addr;

}



static inline bool __rpc_copy_addr4(struct sockaddr *dst,

				    const struct sockaddr *src)

{

	const struct sockaddr_in *ssin = (struct sockaddr_in *) src;

	struct sockaddr_in *dsin = (struct sockaddr_in *) dst;



	dsin->sin_family = ssin->sin_family;

	dsin->sin_addr.s_addr = ssin->sin_addr.s_addr;

	return true;

}



#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)

static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1,

				   const struct sockaddr *sap2)
@@ -206,12 +217,29 @@ static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1, 
	const struct sockaddr_in6 *sin2 = (const struct sockaddr_in6 *)sap2;

	return ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr);

}



static inline bool __rpc_copy_addr6(struct sockaddr *dst,

				    const struct sockaddr *src)

{

	const struct sockaddr_in6 *ssin6 = (const struct sockaddr_in6 *) src;

	struct sockaddr_in6 *dsin6 = (struct sockaddr_in6 *) dst;



	dsin6->sin6_family = ssin6->sin6_family;

	ipv6_addr_copy(&dsin6->sin6_addr, &ssin6->sin6_addr);

	return true;

}

#else	/* !(CONFIG_IPV6 || CONFIG_IPV6_MODULE) */

static inline bool __rpc_cmp_addr6(const struct sockaddr *sap1,

				   const struct sockaddr *sap2)

{

	return false;

}



static inline bool __rpc_copy_addr6(struct sockaddr *dst,

				    const struct sockaddr *src)

{

	return false;

}

#endif	/* !(CONFIG_IPV6 || CONFIG_IPV6_MODULE) */



/**
@@ -236,5 +264,27 @@ static inline bool rpc_cmp_addr(const struct sockaddr *sap1, 
	return false;

}



/**

 * rpc_copy_addr - copy the address portion of one sockaddr to another

 * @dst: destination sockaddr

 * @src: source sockaddr

 *

 * Just copies the address portion and family. Ignores port, scope, etc.

 * Caller is responsible for making certain that dst is large enough to hold

 * the address in src. Returns true if address family is supported. Returns

 * false otherwise.

 */

static inline bool rpc_copy_addr(struct sockaddr *dst,

				 const struct sockaddr *src)

{

	switch (src->sa_family) {

	case AF_INET:

		return __rpc_copy_addr4(dst, src);

	case AF_INET6:

		return __rpc_copy_addr6(dst, src);

	}

	return false;

}



#endif /* __KERNEL__ */

#endif /* _LINUX_SUNRPC_CLNT_H */