From 87d8069f6b028793254ddd0a66df1d7b6d79b450 Mon Sep 17 00:00:00 2001 From: Moni Shoua Date: Wed, 15 Jan 2020 14:43:33 +0200 Subject: [PATCH] IB/core: Add interface to advise_mr for kernel users Allow ULPs to call advise_mr, so they can control ODP regions in the same way as user space applications. Signed-off-by: Moni Shoua Signed-off-by: Leon Romanovsky --- drivers/infiniband/core/verbs.c | 11 +++++++++++ include/rdma/ib_verbs.h | 3 +++ 2 files changed, 14 insertions(+) diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index 7a69e4b..d33bdc9 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -2020,6 +2020,17 @@ struct ib_mr *ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, } EXPORT_SYMBOL(ib_reg_user_mr); +int ib_advise_mr(struct ib_pd *pd, enum ib_uverbs_advise_mr_advice advice, + u32 flags, struct ib_sge *sg_list, u32 num_sge) +{ + if (!pd->device->ops.advise_mr) + return -EOPNOTSUPP; + + return pd->device->ops.advise_mr(pd, advice, flags, sg_list, num_sge, + NULL); +} +EXPORT_SYMBOL(ib_advise_mr); + int ib_dereg_mr_user(struct ib_mr *mr, struct ib_udata *udata) { struct ib_pd *pd = mr->pd; diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 170d5ec..e2cc622 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -4159,6 +4159,9 @@ static inline void ib_dma_free_coherent(struct ib_device *dev, struct ib_mr *ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, u64 virt_addr, int mr_access_flags); +/* ib_advise_mr - give an advice about an address range in a memory region */ +int ib_advise_mr(struct ib_pd *pd, enum ib_uverbs_advise_mr_advice advice, + u32 flags, struct ib_sge *sg_list, u32 num_sge); /** * ib_dereg_mr_user - Deregisters a memory region and removes it from the * HCA translation table. -- 2.7.4