diff options
| author |   Haggai Eran <haggaie@mellanox.com> | 2014-12-11 17:04:14 +0200 |
|---|---|---|
| committer |   Roland Dreier <roland@purestorage.com> | 2014-12-15 18:13:35 -0800 |
| commit | c1395a2a8c01e8a919e47d64eb3d23d00e824b8b (patch) | |
| tree | 14c4baa698685dc3e59412a37e9774be1dc8fe09 /include/rdma | |
| parent | IB/core: Add umem function to read data from user-space (diff) | |
| download | wireguard-linux-c1395a2a8c01e8a919e47d64eb3d23d00e824b8b.tar.xz wireguard-linux-c1395a2a8c01e8a919e47d64eb3d23d00e824b8b.zip | |
IB/mlx5: Add function to read WQE from user-space
Add a helper function mlx5_ib_read_user_wqe to read information from
user-space owned work queues. The function will be used in a later
patch by the page-fault handling code in mlx5_ib.
Signed-off-by: Haggai Eran <haggaie@mellanox.com>
[ Add stub for ib_umem_copy_from() for CONFIG_INFINIBAND_USER_MEM=n
- Roland ]
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_umem.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/rdma/ib_umem.h b/include/rdma/ib_umem.h index 45bb04bc88cd..a51f4091489a 100644 --- a/include/rdma/ib_umem.h +++ b/include/rdma/ib_umem.h @@ -98,7 +98,10 @@ static inline struct ib_umem *ib_umem_get(struct ib_ucontext *context, } static inline void ib_umem_release(struct ib_umem *umem) { } static inline int ib_umem_page_count(struct ib_umem *umem) { return 0; } - +static inline int ib_umem_copy_from(void *dst, struct ib_umem *umem, size_t offset, + size_t length) { + return -EINVAL; +} #endif /* CONFIG_INFINIBAND_USER_MEM */ #endif /* IB_UMEM_H */ |