On Tue, Nov 21, 2017 at 08:20:46PM +0800, Lijun Ou wrote:
> This patch adds the rereg mr verbs in userspace.
>
> Signed-off-by: Shaobo Xu <xushaobo2@xxxxxxxxxx>
> Signed-off-by: Lijun Ou <oulijun@xxxxxxxxxx>
> Signed-off-by: Wei Hu (Xavier) <xavier.huwei@xxxxxxxxxx>
> ---
> providers/hns/hns_roce_u.c | 1 +
> providers/hns/hns_roce_u.h | 2 ++
> providers/hns/hns_roce_u_verbs.c | 14 ++++++++++++++
> 3 files changed, 17 insertions(+)
>
> diff --git a/providers/hns/hns_roce_u.c b/providers/hns/hns_roce_u.c
> index ababd9c..9b5de44 100644
> --- a/providers/hns/hns_roce_u.c
> +++ b/providers/hns/hns_roce_u.c
> @@ -118,6 +118,7 @@ static struct ibv_context *hns_roce_alloc_context(struct ibv_device *ibdev,
> context->ibv_ctx.ops.alloc_pd = hns_roce_u_alloc_pd;
> context->ibv_ctx.ops.dealloc_pd = hns_roce_u_free_pd;
> context->ibv_ctx.ops.reg_mr = hns_roce_u_reg_mr;
> + context->ibv_ctx.ops.rereg_mr = hns_roce_u_rereg_mr;
> context->ibv_ctx.ops.dereg_mr = hns_roce_u_dereg_mr;
>
> context->ibv_ctx.ops.create_cq = hns_roce_u_create_cq;
> diff --git a/providers/hns/hns_roce_u.h b/providers/hns/hns_roce_u.h
> index 0e98f22..2f4f3dc 100644
> --- a/providers/hns/hns_roce_u.h
> +++ b/providers/hns/hns_roce_u.h
> @@ -254,6 +254,8 @@ int hns_roce_u_free_pd(struct ibv_pd *pd);
>
> struct ibv_mr *hns_roce_u_reg_mr(struct ibv_pd *pd, void *addr, size_t length,
> int access);
> +int hns_roce_u_rereg_mr(struct ibv_mr *mr, int flags, struct ibv_pd *pd,
> + void *addr, size_t length, int access);
> int hns_roce_u_dereg_mr(struct ibv_mr *mr);
>
> struct ibv_cq *hns_roce_u_create_cq(struct ibv_context *context, int cqe,
> diff --git a/providers/hns/hns_roce_u_verbs.c b/providers/hns/hns_roce_u_verbs.c
> index d0ab10a..4fa188f 100644
> --- a/providers/hns/hns_roce_u_verbs.c
> +++ b/providers/hns/hns_roce_u_verbs.c
> @@ -150,6 +150,20 @@ struct ibv_mr *hns_roce_u_reg_mr(struct ibv_pd *pd, void *addr, size_t length,
> return mr;
> }
>
> +int hns_roce_u_rereg_mr(struct ibv_mr *mr, int flags, struct ibv_pd *pd,
> + void *addr, size_t length, int access)
> +{
> + struct ibv_rereg_mr cmd;
> + struct ibv_rereg_mr_resp resp;
> +
> + if (flags & IBV_REREG_MR_KEEP_VALID)
> + return ENOTSUP;
You need to write the supported flags here, so the people will
be able to extend ibv_rereg_mr_flags without worries about your driver.
Thanks
> +
> + return ibv_cmd_rereg_mr(mr, flags, addr, length, (uintptr_t)addr,
> + access, pd, &cmd, sizeof(cmd), &resp,
> + sizeof(resp));
> +}
> +
> int hns_roce_u_dereg_mr(struct ibv_mr *mr)
> {
> int ret;
> --
> 1.9.1
>
> --
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