From 42e5c3e2725ba0c0affc1fc8a6aa1d5cf31ecb75 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Sat, 24 Oct 2015 17:27:35 -0400 Subject: SUNRPC: Abstract backchannel operations xprt_{setup,destroy}_backchannel() won't be adequate for RPC/RMDA bi-direction. In particular, receive buffers have to be pre- registered and posted in order to receive incoming backchannel requests. Add a virtual function call to allow the insertion of appropriate backchannel setup and destruction methods for each transport. In addition, freeing a backchannel request is a little different for RPC/RDMA. Introduce an rpc_xprt_op to handle the difference. Signed-off-by: Chuck Lever Reviewed-by: Sagi Grimberg Tested-By: Devesh Sharma Signed-off-by: Anna Schumaker --- include/linux/sunrpc/bc_xprt.h | 5 +++++ include/linux/sunrpc/xprt.h | 5 +++++ 2 files changed, 10 insertions(+) (limited to 'include/linux') diff --git a/include/linux/sunrpc/bc_xprt.h b/include/linux/sunrpc/bc_xprt.h index 8df43c9f11dc..4397a4824c81 100644 --- a/include/linux/sunrpc/bc_xprt.h +++ b/include/linux/sunrpc/bc_xprt.h @@ -38,6 +38,11 @@ void xprt_free_bc_request(struct rpc_rqst *req); int xprt_setup_backchannel(struct rpc_xprt *, unsigned int min_reqs); void xprt_destroy_backchannel(struct rpc_xprt *, unsigned int max_reqs); +/* Socket backchannel transport methods */ +int xprt_setup_bc(struct rpc_xprt *xprt, unsigned int min_reqs); +void xprt_destroy_bc(struct rpc_xprt *xprt, unsigned int max_reqs); +void xprt_free_bc_rqst(struct rpc_rqst *req); + /* * Determine if a shared backchannel is in use */ diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index 0fb9acbb4780..3f79c4a4ce74 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -136,6 +136,11 @@ struct rpc_xprt_ops { int (*enable_swap)(struct rpc_xprt *xprt); void (*disable_swap)(struct rpc_xprt *xprt); void (*inject_disconnect)(struct rpc_xprt *xprt); + int (*bc_setup)(struct rpc_xprt *xprt, + unsigned int min_reqs); + void (*bc_free_rqst)(struct rpc_rqst *rqst); + void (*bc_destroy)(struct rpc_xprt *xprt, + unsigned int max_reqs); }; /* -- cgit v1.2.3