diff options
| author | Christoph Hellwig <hch@lst.de> | 2016-05-03 19:01:07 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-05-13 20:37:18 +0300 |
| commit | fffb0383cf0b433ad029d19e6e9d6f1f46523ace (patch) | |
| tree | bbef7530c7911f2df6a02d19547ee81a1ca341d3 /include/rdma | |
| parent | 04c41bf39f5b2de72bda04cf10bb95ea1870a94f (diff) | |
| download | linux-fffb0383cf0b433ad029d19e6e9d6f1f46523ace.tar.xz | |
IB/core: add a simple MR pool
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_verbs.h | 8 | ||||
| -rw-r--r-- | include/rdma/mr_pool.h | 25 |
2 files changed, 32 insertions, 1 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 9e8616af6899..400a8a0422a4 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -1421,9 +1421,12 @@ struct ib_qp { struct ib_pd *pd; struct ib_cq *send_cq; struct ib_cq *recv_cq; + spinlock_t mr_lock; + int mrs_used; struct ib_srq *srq; struct ib_xrcd *xrcd; /* XRC TGT QPs only */ struct list_head xrcd_list; + /* count times opened, mcast attaches, flow attaches */ atomic_t usecnt; struct list_head open_list; @@ -1438,12 +1441,15 @@ struct ib_qp { struct ib_mr { struct ib_device *device; struct ib_pd *pd; - struct ib_uobject *uobject; u32 lkey; u32 rkey; u64 iova; u32 length; unsigned int page_size; + union { + struct ib_uobject *uobject; /* user */ + struct list_head qp_entry; /* FR */ + }; }; struct ib_mw { diff --git a/include/rdma/mr_pool.h b/include/rdma/mr_pool.h new file mode 100644 index 000000000000..986010b812eb --- /dev/null +++ b/include/rdma/mr_pool.h @@ -0,0 +1,25 @@ +/* + * Copyright (c) 2016 HGST, a Western Digital Company. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ +#ifndef _RDMA_MR_POOL_H +#define _RDMA_MR_POOL_H 1 + +#include <rdma/ib_verbs.h> + +struct ib_mr *ib_mr_pool_get(struct ib_qp *qp, struct list_head *list); +void ib_mr_pool_put(struct ib_qp *qp, struct list_head *list, struct ib_mr *mr); + +int ib_mr_pool_init(struct ib_qp *qp, struct list_head *list, int nr, + enum ib_mr_type type, u32 max_num_sg); +void ib_mr_pool_destroy(struct ib_qp *qp, struct list_head *list); + +#endif /* _RDMA_MR_POOL_H */ |