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author | Chuck Lever <chuck.lever@oracle.com> | 2009-08-09 15:09:34 -0400 |
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committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2009-08-09 15:09:34 -0400 |
commit | a02d692611348f11ee1bc37431a883c3ff2de23e (patch) | |
tree | 5a2ad4862784b4337846b44ddd816e495484086f /include/linux/sunrpc/clnt.h | |
parent | 0b10bf5e14d856d1d27a2117d07af2bebee81b75 (diff) | |
download | blackbird-op-linux-a02d692611348f11ee1bc37431a883c3ff2de23e.tar.gz blackbird-op-linux-a02d692611348f11ee1bc37431a883c3ff2de23e.zip |
SUNRPC: Provide functions for managing universal addresses
Introduce a set of functions in the kernel's RPC implementation for
converting between a socket address and either a standard
presentation address string or an RPC universal address.
The universal address functions will be used to encode and decode
RPCB_FOO and NFSv4 SETCLIENTID arguments. The other functions are
part of a previous promise to deliver shared functions that can be
used by upper-layer protocols to display and manipulate IP
addresses.
The kernel's current address printf formatters were designed
specifically for kernel to user-space APIs that require a particular
string format for socket addresses, thus are somewhat limited for the
purposes of sunrpc.ko. The formatter for IPv6 addresses, %pI6, does
not support short-handing or scope IDs. Also, these printf formatters
are unique per address family, so a separate formatter string is
required for printing AF_INET and AF_INET6 addresses.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux/sunrpc/clnt.h')
-rw-r--r-- | include/linux/sunrpc/clnt.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 37881f1a0bd7..2636e8ad551c 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -9,6 +9,10 @@ #ifndef _LINUX_SUNRPC_CLNT_H #define _LINUX_SUNRPC_CLNT_H +#include <linux/socket.h> +#include <linux/in.h> +#include <linux/in6.h> + #include <linux/sunrpc/msg_prot.h> #include <linux/sunrpc/sched.h> #include <linux/sunrpc/xprt.h> @@ -151,5 +155,39 @@ void rpc_force_rebind(struct rpc_clnt *); size_t rpc_peeraddr(struct rpc_clnt *, struct sockaddr *, size_t); const char *rpc_peeraddr2str(struct rpc_clnt *, enum rpc_display_format_t); +size_t rpc_ntop(const struct sockaddr *, char *, const size_t); +size_t rpc_pton(const char *, const size_t, + struct sockaddr *, const size_t); +char * rpc_sockaddr2uaddr(const struct sockaddr *); +size_t rpc_uaddr2sockaddr(const char *, const size_t, + struct sockaddr *, const size_t); + +static inline unsigned short rpc_get_port(const struct sockaddr *sap) +{ + switch (sap->sa_family) { + case AF_INET: + return ntohs(((struct sockaddr_in *)sap)->sin_port); + case AF_INET6: + return ntohs(((struct sockaddr_in6 *)sap)->sin6_port); + } + return 0; +} + +static inline void rpc_set_port(struct sockaddr *sap, + const unsigned short port) +{ + switch (sap->sa_family) { + case AF_INET: + ((struct sockaddr_in *)sap)->sin_port = htons(port); + break; + case AF_INET6: + ((struct sockaddr_in6 *)sap)->sin6_port = htons(port); + break; + } +} + +#define IPV6_SCOPE_DELIMITER '%' +#define IPV6_SCOPE_ID_LEN sizeof("%nnnnnnnnnn") + #endif /* __KERNEL__ */ #endif /* _LINUX_SUNRPC_CLNT_H */ |