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| author | Chuck Lever <chuck.lever@ORACLE.COM> | 2011-05-09 21:22:44 +0200 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-05-27 23:42:47 +0200 |
| commit | 176e21ee2ec89cae8d45cf1a850ea45a45428fb8 (patch) | |
| tree | 4e1231617d193b3fe62ea5bd4df5e4d8fe8b9e80 /net/sunrpc/clnt.c | |
| parent | SUNRPC: Remove obsolete comment (diff) | |
| download | linux-176e21ee2ec89cae8d45cf1a850ea45a45428fb8.tar.xz linux-176e21ee2ec89cae8d45cf1a850ea45a45428fb8.zip | |
SUNRPC: Support for RPC over AF_LOCAL transports
TI-RPC introduces the capability of performing RPC over AF_LOCAL
sockets. It uses this mainly for registering and unregistering
local RPC services securely with the local rpcbind, but we could
also conceivably use it as a generic upcall mechanism.
This patch provides a client-side only implementation for the moment.
We might also consider a server-side implementation to provide
AF_LOCAL access to NLM (for statd downcalls, and such like).
Autobinding is not supported on kernel AF_LOCAL transports at this
time. Kernel ULPs must specify the pathname of the remote endpoint
when an AF_LOCAL transport is created. rpcbind supports registering
services available via AF_LOCAL, so the kernel could handle it with
some adjustment to ->rpcbind and ->set_port. But we don't need this
feature for doing upcalls via well-known named sockets.
This has not been tested with ULPs that move a substantial amount of
data. Thus, I can't attest to how robust the write_space and
congestion management logic is.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc/clnt.c')
| -rw-r--r-- | net/sunrpc/clnt.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 08ed49629b86..b84d7395535e 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -28,7 +28,9 @@ #include <linux/slab.h> #include <linux/utsname.h> #include <linux/workqueue.h> +#include <linux/in.h> #include <linux/in6.h> +#include <linux/un.h> #include <linux/sunrpc/clnt.h> #include <linux/sunrpc/rpc_pipe_fs.h> @@ -294,6 +296,8 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args) * up a string representation of the passed-in address. */ if (args->servername == NULL) { + struct sockaddr_un *sun = + (struct sockaddr_un *)args->address; struct sockaddr_in *sin = (struct sockaddr_in *)args->address; struct sockaddr_in6 *sin6 = @@ -301,6 +305,10 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args) servername[0] = '\0'; switch (args->address->sa_family) { + case AF_LOCAL: + snprintf(servername, sizeof(servername), "%s", + sun->sun_path); + break; case AF_INET: snprintf(servername, sizeof(servername), "%pI4", &sin->sin_addr.s_addr); |