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| author | Chuck Lever <chuck.lever@ORACLE.COM> | 2011-05-09 15:22:44 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-05-27 17:42:47 -0400 |
| commit | 176e21ee2ec89cae8d45cf1a850ea45a45428fb8 (patch) | |
| tree | 4e1231617d193b3fe62ea5bd4df5e4d8fe8b9e80 /include | |
| parent | 559649efb9b0d248541933197bdf7b75529da457 (diff) | |
| download | kernel_samsung_espresso10-176e21ee2ec89cae8d45cf1a850ea45a45428fb8.zip kernel_samsung_espresso10-176e21ee2ec89cae8d45cf1a850ea45a45428fb8.tar.gz kernel_samsung_espresso10-176e21ee2ec89cae8d45cf1a850ea45a45428fb8.tar.bz2 | |
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')
| -rw-r--r-- | include/linux/sunrpc/msg_prot.h | 1 | ||||
| -rw-r--r-- | include/linux/sunrpc/xprt.h | 3 |
2 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/sunrpc/msg_prot.h b/include/linux/sunrpc/msg_prot.h index 77e6248..c68a147 100644 --- a/include/linux/sunrpc/msg_prot.h +++ b/include/linux/sunrpc/msg_prot.h @@ -145,6 +145,7 @@ typedef __be32 rpc_fraghdr; #define RPCBIND_NETID_TCP "tcp" #define RPCBIND_NETID_UDP6 "udp6" #define RPCBIND_NETID_TCP6 "tcp6" +#define RPCBIND_NETID_LOCAL "local" /* * Note that RFC 1833 does not put any size restrictions on the diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index a0f998c..81cce3b 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 { |