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path: root/include/linux/sunrpc/svc_rdma.h
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Diffstat (limited to 'include/linux/sunrpc/svc_rdma.h')
-rw-r--r--include/linux/sunrpc/svc_rdma.h27
1 files changed, 26 insertions, 1 deletions
diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h
index dc05b54bd3a3..c14fe86dac59 100644
--- a/include/linux/sunrpc/svc_rdma.h
+++ b/include/linux/sunrpc/svc_rdma.h
@@ -72,6 +72,7 @@ extern atomic_t rdma_stat_sq_prod;
*/
struct svc_rdma_op_ctxt {
struct svc_rdma_op_ctxt *read_hdr;
+ struct svc_rdma_fastreg_mr *frmr;
int hdr_count;
struct xdr_buf arg;
struct list_head dto_q;
@@ -103,16 +104,30 @@ struct svc_rdma_chunk_sge {
int start; /* sge no for this chunk */
int count; /* sge count for this chunk */
};
+struct svc_rdma_fastreg_mr {
+ struct ib_mr *mr;
+ void *kva;
+ struct ib_fast_reg_page_list *page_list;
+ int page_list_len;
+ unsigned long access_flags;
+ unsigned long map_len;
+ enum dma_data_direction direction;
+ struct list_head frmr_list;
+};
struct svc_rdma_req_map {
+ struct svc_rdma_fastreg_mr *frmr;
unsigned long count;
union {
struct kvec sge[RPCSVC_MAXPAGES];
struct svc_rdma_chunk_sge ch[RPCSVC_MAXPAGES];
};
};
-
+#define RDMACTXT_F_FAST_UNREG 1
#define RDMACTXT_F_LAST_CTXT 2
+#define SVCRDMA_DEVCAP_FAST_REG 1 /* fast mr registration */
+#define SVCRDMA_DEVCAP_READ_W_INV 2 /* read w/ invalidate */
+
struct svcxprt_rdma {
struct svc_xprt sc_xprt; /* SVC transport structure */
struct rdma_cm_id *sc_cm_id; /* RDMA connection id */
@@ -136,6 +151,11 @@ struct svcxprt_rdma {
struct ib_cq *sc_rq_cq;
struct ib_cq *sc_sq_cq;
struct ib_mr *sc_phys_mr; /* MR for server memory */
+ u32 sc_dev_caps; /* distilled device caps */
+ u32 sc_dma_lkey; /* local dma key */
+ unsigned int sc_frmr_pg_list_len;
+ struct list_head sc_frmr_q;
+ spinlock_t sc_frmr_q_lock;
spinlock_t sc_lock; /* transport lock */
@@ -192,8 +212,13 @@ extern int svc_rdma_post_recv(struct svcxprt_rdma *);
extern int svc_rdma_create_listen(struct svc_serv *, int, struct sockaddr *);
extern struct svc_rdma_op_ctxt *svc_rdma_get_context(struct svcxprt_rdma *);
extern void svc_rdma_put_context(struct svc_rdma_op_ctxt *, int);
+extern void svc_rdma_unmap_dma(struct svc_rdma_op_ctxt *ctxt);
extern struct svc_rdma_req_map *svc_rdma_get_req_map(void);
extern void svc_rdma_put_req_map(struct svc_rdma_req_map *);
+extern int svc_rdma_fastreg(struct svcxprt_rdma *, struct svc_rdma_fastreg_mr *);
+extern struct svc_rdma_fastreg_mr *svc_rdma_get_frmr(struct svcxprt_rdma *);
+extern void svc_rdma_put_frmr(struct svcxprt_rdma *,
+ struct svc_rdma_fastreg_mr *);
extern void svc_sq_reap(struct svcxprt_rdma *);
extern void svc_rq_reap(struct svcxprt_rdma *);
extern struct svc_xprt_class svc_rdma_class;