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authorChuck Lever <chuck.lever@ORACLE.COM>2011-05-09 23:22:44 +0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2011-05-28 01:42:47 +0400
commit176e21ee2ec89cae8d45cf1a850ea45a45428fb8 (patch)
tree4e1231617d193b3fe62ea5bd4df5e4d8fe8b9e80 /include/linux/sunrpc/xprt.h
parent559649efb9b0d248541933197bdf7b75529da457 (diff)
downloadlinux-176e21ee2ec89cae8d45cf1a850ea45a45428fb8.tar.xz
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 'include/linux/sunrpc/xprt.h')
-rw-r--r--include/linux/sunrpc/xprt.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h
index a0f998c07c65..81cce3b3ee66 100644
--- a/include/linux/sunrpc/xprt.h
+++ b/include/linux/sunrpc/xprt.h
@@ -141,7 +141,8 @@ enum xprt_transports {
XPRT_TRANSPORT_UDP = IPPROTO_UDP,
XPRT_TRANSPORT_TCP = IPPROTO_TCP,
XPRT_TRANSPORT_BC_TCP = IPPROTO_TCP | XPRT_TRANSPORT_BC,
- XPRT_TRANSPORT_RDMA = 256
+ XPRT_TRANSPORT_RDMA = 256,
+ XPRT_TRANSPORT_LOCAL = 257,
};
struct rpc_xprt {