Add data types to support FRMR and a new memory registration strategy
to use FRMR if available.
Signed-off-by: Tom Tucker <tom@xxxxxxxxxxxxxxxxxxxxx>
---
include/linux/sunrpc/xprtrdma.h | 1 +
net/sunrpc/xprtrdma/xprt_rdma.h | 10 +++++++++-
2 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/include/linux/sunrpc/xprtrdma.h b/include/linux/sunrpc/xprtrdma.h
index 4de56b1..98d8e4a 100644
--- a/include/linux/sunrpc/xprtrdma.h
+++ b/include/linux/sunrpc/xprtrdma.h
@@ -79,6 +79,7 @@ enum rpcrdma_memreg {
RPCRDMA_MEMWINDOWS_ASYNC,
RPCRDMA_MTHCAFMR,
RPCRDMA_ALLPHYSICAL,
+ RPCRDMA_FASTREG,
RPCRDMA_LAST
};
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index 2427822..1f81dad 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -58,6 +58,7 @@ struct rpcrdma_ia {
struct rdma_cm_id *ri_id;
struct ib_pd *ri_pd;
struct ib_mr *ri_bind_mem;
+ u32 ri_dma_lkey;
struct completion ri_done;
int ri_async_rc;
enum rpcrdma_memreg ri_memreg_strategy;
@@ -159,6 +160,11 @@ struct rpcrdma_mr_seg { /* chunk descriptors */
} r;
struct list_head mw_list;
} *rl_mw;
+ struct rpcrdma_frmr {
+ struct ib_fast_reg_page_list *fr_pgl;
+ struct ib_mr *fr_mr;
+ struct list_head fr_list;
+ } *rl_fr;
} mr_chunk;
u64 mr_base; /* registration result */
u32 mr_rkey; /* registration result */
@@ -198,7 +204,9 @@ struct rpcrdma_buffer {
atomic_t rb_credits; /* most recent server credits */
unsigned long rb_cwndscale; /* cached framework rpc_cwndscale */
int rb_max_requests;/* client max requests */
- struct list_head rb_mws; /* optional memory windows/fmrs */
+ spinlock_t rb_frs_lock; /* protects frs list */
+ struct list_head rb_frs; /* optional fmrs */
+ struct list_head rb_mws; /* optional memory windows */
int rb_send_index;
struct rpcrdma_req **rb_send_bufs;
int rb_recv_index;
--
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