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

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Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Jeff Layton 2009-08-14 12:57:55 -04:00 committed by J. Bruce Fields
parent 4516fc0454
commit be3ad6b0b6
1 changed files with 50 additions and 0 deletions
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50
include/linux/sunrpc/clnt.h
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@ -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 */