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SUNRPC: Clean up RPCBIND_MAXUADDRLEN definitions

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Clean up: Replace the single-integer definition of RPCBIND_MAXUADDRLEN
with a definition that is based on previously defined address string
sizes, and document the way this maximum is calculated.  Also provide
a separate macro for the size of the port number extension.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever 2009-08-09 15:09:32 -04:00 committed by Trond Myklebust
parent ec88f28d1e
commit 169026a61e
1 changed files with 16 additions and 1 deletions
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17
include/linux/sunrpc/msg_prot.h
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@ -189,7 +189,22 @@ typedef __be32 rpc_fraghdr;
* Additionally, the two alternative forms specified in Section 2.2 of
* [RFC2373] are also acceptable.
*/
#define RPCBIND_MAXUADDRLEN (56u)
#include <linux/inet.h>
/* Maximum size of the port number part of a universal address */
#define RPCBIND_MAXUADDRPLEN sizeof(".255.255")
/* Maximum size of an IPv4 universal address */
#define RPCBIND_MAXUADDR4LEN \
(INET_ADDRSTRLEN + RPCBIND_MAXUADDRPLEN)
/* Maximum size of an IPv6 universal address */
#define RPCBIND_MAXUADDR6LEN \
(INET6_ADDRSTRLEN + RPCBIND_MAXUADDRPLEN)
/* Assume INET6_ADDRSTRLEN will always be larger than INET_ADDRSTRLEN... */
#define RPCBIND_MAXUADDRLEN RPCBIND_MAXUADDR6LEN
#endif /* __KERNEL__ */
#endif /* _LINUX_SUNRPC_MSGPROT_H_ */