From: Matan Barak <[email protected]> Add memory re-registeration to libmlx4.
Memory re-registeration is a feature that enables one to change the attributes of a memory region, including PD, translation (address and length) and access flags. Signed-off-by: Matan Barak <[email protected]> Signed-off-by: Or Gerlitz <[email protected]> --- src/mlx4.c | 1 + src/mlx4.h | 2 ++ src/verbs.c | 15 +++++++++++++++ 3 files changed, 18 insertions(+), 0 deletions(-) diff --git a/src/mlx4.c b/src/mlx4.c index 2999150..115fc9c 100644 --- a/src/mlx4.c +++ b/src/mlx4.c @@ -92,6 +92,7 @@ static struct ibv_context_ops mlx4_ctx_ops = { .alloc_pd = mlx4_alloc_pd, .dealloc_pd = mlx4_free_pd, .reg_mr = mlx4_reg_mr, + .rereg_mr = mlx4_rereg_mr, .dereg_mr = mlx4_dereg_mr, .create_cq = mlx4_create_cq, .poll_cq = mlx4_poll_cq, diff --git a/src/mlx4.h b/src/mlx4.h index d71450f..ccb363a 100644 --- a/src/mlx4.h +++ b/src/mlx4.h @@ -363,6 +363,8 @@ int mlx4_close_xrcd(struct ibv_xrcd *xrcd); struct ibv_mr *mlx4_reg_mr(struct ibv_pd *pd, void *addr, size_t length, int access); +int mlx4_rereg_mr(struct ibv_mr *mr, int flags, struct ibv_pd *pd, + void *addr, size_t length, uint64_t access); int mlx4_dereg_mr(struct ibv_mr *mr); struct ibv_cq *mlx4_create_cq(struct ibv_context *context, int cqe, diff --git a/src/verbs.c b/src/verbs.c index 623d576..db97303 100644 --- a/src/verbs.c +++ b/src/verbs.c @@ -166,6 +166,21 @@ struct ibv_mr *mlx4_reg_mr(struct ibv_pd *pd, void *addr, size_t length, return mr; } +int mlx4_rereg_mr(struct ibv_mr *mr, + int flags, + struct ibv_pd *pd, void *addr, + size_t length, uint64_t access) +{ + struct ibv_rereg_mr cmd; + struct ibv_rereg_mr_resp resp; + + return ibv_cmd_rereg_mr(mr, flags, addr, length, + (uintptr_t) addr, + access, pd, + &cmd, sizeof(cmd), + &resp, sizeof(resp)); +} + int mlx4_dereg_mr(struct ibv_mr *mr) { int ret; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
