* [PATCH v5 01/26] IB/core: Introduce new fast registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 02/26] IB/mlx5: Remove dead fmr code Sagi Grimberg
` (25 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
The new fast registration verb ib_map_mr_sg receives a scatterlist
and converts it to a page list under the verbs API thus hiding
the specific HW mapping details away from the consumer.
The provider drivers are provided with a generic helper ib_sg_to_pages
that converts a scatterlist into a vector of page addresses. The
drivers can still perform any HW specific page address setting
by passing a set_page function pointer which will be invoked for
each page address. This allows drivers to avoid keeping a shadow
page vectors and convert them to HW specific translations by doing
extra copies.
This API will allow ULPs to remove the duplicated code of constructing
a page vector from a given sg list.
The send work request ib_reg_wr also shrinks as it will contain only
mr, key and access flags in addition.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Tested-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/core/verbs.c | 107 ++++++++++++++++++++++++++++++++++++++++
include/rdma/ib_verbs.h | 44 +++++++++++++++++
2 files changed, 151 insertions(+)
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index e1f2c9887f3f..9a4e34bc5ff3 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -1469,3 +1469,110 @@ int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
mr->device->check_mr_status(mr, check_mask, mr_status) : -ENOSYS;
}
EXPORT_SYMBOL(ib_check_mr_status);
+
+/**
+ * ib_map_mr_sg() - Map the largest prefix of a dma mapped SG list
+ * and set it the memory region.
+ * @mr: memory region
+ * @sg: dma mapped scatterlist
+ * @sg_nents: number of entries in sg
+ * @page_size: page vector desired page size
+ *
+ * Constraints:
+ * - The first sg element is allowed to have an offset.
+ * - Each sg element must be aligned to page_size (or physically
+ * contiguous to the previous element). In case an sg element has a
+ * non contiguous offset, the mapping prefix will not include it.
+ * - The last sg element is allowed to have length less than page_size.
+ * - If sg_nents total byte length exceeds the mr max_num_sge * page_size
+ * then only max_num_sg entries will be mapped.
+ *
+ * Returns the number of sg elements that were mapped to the memory region.
+ *
+ * After this completes successfully, the memory region
+ * is ready for registration.
+ */
+int ib_map_mr_sg(struct ib_mr *mr,
+ struct scatterlist *sg,
+ int sg_nents,
+ unsigned int page_size)
+{
+ if (unlikely(!mr->device->map_mr_sg))
+ return -ENOSYS;
+
+ mr->page_size = page_size;
+
+ return mr->device->map_mr_sg(mr, sg, sg_nents);
+}
+EXPORT_SYMBOL(ib_map_mr_sg);
+
+/**
+ * ib_sg_to_pages() - Convert the largest prefix of a sg list
+ * to a page vector
+ * @mr: memory region
+ * @sgl: dma mapped scatterlist
+ * @sg_nents: number of entries in sg
+ * @set_page: driver page assignment function pointer
+ *
+ * Core service helper for drivers to covert the largest
+ * prefix of given sg list to a page vector. The sg list
+ * prefix converted is the prefix that meet the requirements
+ * of ib_map_mr_sg.
+ *
+ * Returns the number of sg elements that were assigned to
+ * a page vector.
+ */
+int ib_sg_to_pages(struct ib_mr *mr,
+ struct scatterlist *sgl,
+ int sg_nents,
+ int (*set_page)(struct ib_mr *, u64))
+{
+ struct scatterlist *sg;
+ u64 last_end_dma_addr = 0, last_page_addr = 0;
+ unsigned int last_page_off = 0;
+ u64 page_mask = ~((u64)mr->page_size - 1);
+ int i;
+
+ mr->iova = sg_dma_address(&sgl[0]);
+ mr->length = 0;
+
+ for_each_sg(sgl, sg, sg_nents, i) {
+ u64 dma_addr = sg_dma_address(sg);
+ unsigned int dma_len = sg_dma_len(sg);
+ u64 end_dma_addr = dma_addr + dma_len;
+ u64 page_addr = dma_addr & page_mask;
+
+ if (i && page_addr != dma_addr) {
+ if (last_end_dma_addr != dma_addr) {
+ /* gap */
+ goto done;
+
+ } else if (last_page_off + dma_len <= mr->page_size) {
+ /* chunk this fragment with the last */
+ mr->length += dma_len;
+ last_end_dma_addr += dma_len;
+ last_page_off += dma_len;
+ continue;
+ } else {
+ /* map starting from the next page */
+ page_addr = last_page_addr + mr->page_size;
+ dma_len -= mr->page_size - last_page_off;
+ }
+ }
+
+ do {
+ if (unlikely(set_page(mr, page_addr)))
+ goto done;
+ page_addr += mr->page_size;
+ } while (page_addr < end_dma_addr);
+
+ mr->length += dma_len;
+ last_end_dma_addr = end_dma_addr;
+ last_page_addr = end_dma_addr & page_mask;
+ last_page_off = end_dma_addr & ~page_mask;
+ }
+
+done:
+ return i;
+}
+EXPORT_SYMBOL(ib_sg_to_pages);
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 513e9c700373..bdc86ff6f7a4 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -739,6 +739,7 @@ enum ib_wc_opcode {
IB_WC_LSO,
IB_WC_LOCAL_INV,
IB_WC_FAST_REG_MR,
+ IB_WC_REG_MR,
IB_WC_MASKED_COMP_SWAP,
IB_WC_MASKED_FETCH_ADD,
/*
@@ -1030,6 +1031,7 @@ enum ib_wr_opcode {
IB_WR_RDMA_READ_WITH_INV,
IB_WR_LOCAL_INV,
IB_WR_FAST_REG_MR,
+ IB_WR_REG_MR,
IB_WR_MASKED_ATOMIC_CMP_AND_SWP,
IB_WR_MASKED_ATOMIC_FETCH_AND_ADD,
IB_WR_BIND_MW,
@@ -1162,6 +1164,18 @@ static inline struct ib_fast_reg_wr *fast_reg_wr(struct ib_send_wr *wr)
return container_of(wr, struct ib_fast_reg_wr, wr);
}
+struct ib_reg_wr {
+ struct ib_send_wr wr;
+ struct ib_mr *mr;
+ u32 key;
+ int access;
+};
+
+static inline struct ib_reg_wr *reg_wr(struct ib_send_wr *wr)
+{
+ return container_of(wr, struct ib_reg_wr, wr);
+}
+
struct ib_bind_mw_wr {
struct ib_send_wr wr;
struct ib_mw *mw;
@@ -1374,6 +1388,9 @@ struct ib_mr {
struct ib_uobject *uobject;
u32 lkey;
u32 rkey;
+ u64 iova;
+ u32 length;
+ unsigned int page_size;
atomic_t usecnt; /* count number of MWs */
};
@@ -1758,6 +1775,9 @@ struct ib_device {
struct ib_mr * (*alloc_mr)(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg);
+ int (*map_mr_sg)(struct ib_mr *mr,
+ struct scatterlist *sg,
+ int sg_nents);
struct ib_fast_reg_page_list * (*alloc_fast_reg_page_list)(struct ib_device *device,
int page_list_len);
void (*free_fast_reg_page_list)(struct ib_fast_reg_page_list *page_list);
@@ -3063,4 +3083,28 @@ struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port,
u16 pkey, const union ib_gid *gid,
const struct sockaddr *addr);
+int ib_map_mr_sg(struct ib_mr *mr,
+ struct scatterlist *sg,
+ int sg_nents,
+ unsigned int page_size);
+
+static inline int
+ib_map_mr_sg_zbva(struct ib_mr *mr,
+ struct scatterlist *sg,
+ int sg_nents,
+ unsigned int page_size)
+{
+ int n;
+
+ n = ib_map_mr_sg(mr, sg, sg_nents, page_size);
+ mr->iova = 0;
+
+ return n;
+}
+
+int ib_sg_to_pages(struct ib_mr *mr,
+ struct scatterlist *sgl,
+ int sg_nents,
+ int (*set_page)(struct ib_mr *, u64));
+
#endif /* IB_VERBS_H */
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 02/26] IB/mlx5: Remove dead fmr code
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-10-13 16:11 ` [PATCH v5 01/26] IB/core: Introduce new " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 03/26] IB/mlx5: Support the new memory registration API Sagi Grimberg
` (24 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Just function declarations - no need for those
laying arround. If for some reason someone will want
FMR support in mlx5, it should be easy enough to restore
a few structs.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Reviewed-by: Bart Van Assche <bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/hw/mlx5/mlx5_ib.h | 25 -------------------------
1 file changed, 25 deletions(-)
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 29f3ecdbe790..f789a3e6c215 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -364,20 +364,6 @@ enum {
MLX5_FMR_BUSY,
};
-struct mlx5_ib_fmr {
- struct ib_fmr ibfmr;
- struct mlx5_core_mr mr;
- int access_flags;
- int state;
- /* protect fmr state
- */
- spinlock_t lock;
- u64 wrid;
- struct ib_send_wr wr[2];
- u8 page_shift;
- struct ib_fast_reg_page_list page_list;
-};
-
struct mlx5_cache_ent {
struct list_head head;
/* sync access to the cahce entry
@@ -462,11 +448,6 @@ static inline struct mlx5_ib_dev *to_mdev(struct ib_device *ibdev)
return container_of(ibdev, struct mlx5_ib_dev, ib_dev);
}
-static inline struct mlx5_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
-{
- return container_of(ibfmr, struct mlx5_ib_fmr, ibfmr);
-}
-
static inline struct mlx5_ib_cq *to_mcq(struct ib_cq *ibcq)
{
return container_of(ibcq, struct mlx5_ib_cq, ibcq);
@@ -582,12 +563,6 @@ struct ib_mr *mlx5_ib_alloc_mr(struct ib_pd *pd,
struct ib_fast_reg_page_list *mlx5_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
int page_list_len);
void mlx5_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
-struct ib_fmr *mlx5_ib_fmr_alloc(struct ib_pd *pd, int acc,
- struct ib_fmr_attr *fmr_attr);
-int mlx5_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
- int npages, u64 iova);
-int mlx5_ib_unmap_fmr(struct list_head *fmr_list);
-int mlx5_ib_fmr_dealloc(struct ib_fmr *ibfmr);
int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
const struct ib_wc *in_wc, const struct ib_grh *in_grh,
const struct ib_mad_hdr *in, size_t in_mad_size,
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 03/26] IB/mlx5: Support the new memory registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-10-13 16:11 ` [PATCH v5 01/26] IB/core: Introduce new " Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 02/26] IB/mlx5: Remove dead fmr code Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 04/26] IB/mlx4: " Sagi Grimberg
` (23 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Support the new memory registration API by allocating a
private page list array in mlx5_ib_mr and populate it when
mlx5_ib_map_mr_sg is invoked. Also, support IB_WR_REG_MR
by setting the exact WQE as IB_WR_FAST_REG_MR, just take the
needed information from different places:
- page_size, iova, length, access flags (ib_mr)
- page array (mlx5_ib_mr)
- key (ib_reg_wr)
The IB_WR_FAST_REG_MR handlers will be removed later when
all the ULPs will be converted.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/hw/mlx5/cq.c | 3 ++
drivers/infiniband/hw/mlx5/main.c | 1 +
drivers/infiniband/hw/mlx5/mlx5_ib.h | 9 ++++
drivers/infiniband/hw/mlx5/mr.c | 93 ++++++++++++++++++++++++++++++++++++
drivers/infiniband/hw/mlx5/qp.c | 83 ++++++++++++++++++++++++++++++++
5 files changed, 189 insertions(+)
diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
index 2d0dbbf38ceb..206930096d56 100644
--- a/drivers/infiniband/hw/mlx5/cq.c
+++ b/drivers/infiniband/hw/mlx5/cq.c
@@ -109,6 +109,9 @@ static enum ib_wc_opcode get_umr_comp(struct mlx5_ib_wq *wq, int idx)
case IB_WR_LOCAL_INV:
return IB_WC_LOCAL_INV;
+ case IB_WR_REG_MR:
+ return IB_WC_REG_MR;
+
case IB_WR_FAST_REG_MR:
return IB_WC_FAST_REG_MR;
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index f1ccd40beae9..7e93044ea6ce 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -1425,6 +1425,7 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach;
dev->ib_dev.process_mad = mlx5_ib_process_mad;
dev->ib_dev.alloc_mr = mlx5_ib_alloc_mr;
+ dev->ib_dev.map_mr_sg = mlx5_ib_map_mr_sg;
dev->ib_dev.alloc_fast_reg_page_list = mlx5_ib_alloc_fast_reg_page_list;
dev->ib_dev.free_fast_reg_page_list = mlx5_ib_free_fast_reg_page_list;
dev->ib_dev.check_mr_status = mlx5_ib_check_mr_status;
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index f789a3e6c215..a29b28c31c44 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -319,6 +319,11 @@ enum mlx5_ib_mtt_access_flags {
struct mlx5_ib_mr {
struct ib_mr ibmr;
+ void *descs;
+ dma_addr_t desc_map;
+ int ndescs;
+ int max_descs;
+ int desc_size;
struct mlx5_core_mr mmr;
struct ib_umem *umem;
struct mlx5_shared_mr_info *smr_info;
@@ -330,6 +335,7 @@ struct mlx5_ib_mr {
struct mlx5_create_mkey_mbox_out out;
struct mlx5_core_sig_ctx *sig;
int live;
+ void *descs_alloc;
};
struct mlx5_ib_fast_reg_page_list {
@@ -560,6 +566,9 @@ int mlx5_ib_dereg_mr(struct ib_mr *ibmr);
struct ib_mr *mlx5_ib_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg);
+int mlx5_ib_map_mr_sg(struct ib_mr *ibmr,
+ struct scatterlist *sg,
+ int sg_nents);
struct ib_fast_reg_page_list *mlx5_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
int page_list_len);
void mlx5_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index b30d4ae0fb61..6177e8053888 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -1153,6 +1153,52 @@ error:
return err;
}
+static int
+mlx5_alloc_priv_descs(struct ib_device *device,
+ struct mlx5_ib_mr *mr,
+ int ndescs,
+ int desc_size)
+{
+ int size = ndescs * desc_size;
+ int add_size;
+ int ret;
+
+ add_size = max_t(int, MLX5_UMR_ALIGN - ARCH_KMALLOC_MINALIGN, 0);
+
+ mr->descs_alloc = kzalloc(size + add_size, GFP_KERNEL);
+ if (!mr->descs_alloc)
+ return -ENOMEM;
+
+ mr->descs = PTR_ALIGN(mr->descs_alloc, MLX5_UMR_ALIGN);
+
+ mr->desc_map = dma_map_single(device->dma_device, mr->descs,
+ size, DMA_TO_DEVICE);
+ if (dma_mapping_error(device->dma_device, mr->desc_map)) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ return 0;
+err:
+ kfree(mr->descs_alloc);
+
+ return ret;
+}
+
+static void
+mlx5_free_priv_descs(struct mlx5_ib_mr *mr)
+{
+ if (mr->descs) {
+ struct ib_device *device = mr->ibmr.device;
+ int size = mr->max_descs * mr->desc_size;
+
+ dma_unmap_single(device->dma_device, mr->desc_map,
+ size, DMA_TO_DEVICE);
+ kfree(mr->descs_alloc);
+ mr->descs = NULL;
+ }
+}
+
static int clean_mr(struct mlx5_ib_mr *mr)
{
struct mlx5_ib_dev *dev = to_mdev(mr->ibmr.device);
@@ -1172,6 +1218,8 @@ static int clean_mr(struct mlx5_ib_mr *mr)
mr->sig = NULL;
}
+ mlx5_free_priv_descs(mr);
+
if (!umred) {
err = destroy_mkey(dev, mr);
if (err) {
@@ -1261,6 +1309,14 @@ struct ib_mr *mlx5_ib_alloc_mr(struct ib_pd *pd,
if (mr_type == IB_MR_TYPE_MEM_REG) {
access_mode = MLX5_ACCESS_MODE_MTT;
in->seg.log2_page_size = PAGE_SHIFT;
+
+ err = mlx5_alloc_priv_descs(pd->device, mr,
+ ndescs, sizeof(u64));
+ if (err)
+ goto err_free_in;
+
+ mr->desc_size = sizeof(u64);
+ mr->max_descs = ndescs;
} else if (mr_type == IB_MR_TYPE_SIGNATURE) {
u32 psv_index[2];
@@ -1317,6 +1373,7 @@ err_destroy_psv:
mlx5_ib_warn(dev, "failed to destroy wire psv %d\n",
mr->sig->psv_wire.psv_idx);
}
+ mlx5_free_priv_descs(mr);
err_free_sig:
kfree(mr->sig);
err_free_in:
@@ -1408,3 +1465,39 @@ int mlx5_ib_check_mr_status(struct ib_mr *ibmr, u32 check_mask,
done:
return ret;
}
+
+static int mlx5_set_page(struct ib_mr *ibmr, u64 addr)
+{
+ struct mlx5_ib_mr *mr = to_mmr(ibmr);
+ __be64 *descs;
+
+ if (unlikely(mr->ndescs == mr->max_descs))
+ return -ENOMEM;
+
+ descs = mr->descs;
+ descs[mr->ndescs++] = cpu_to_be64(addr | MLX5_EN_RD | MLX5_EN_WR);
+
+ return 0;
+}
+
+int mlx5_ib_map_mr_sg(struct ib_mr *ibmr,
+ struct scatterlist *sg,
+ int sg_nents)
+{
+ struct mlx5_ib_mr *mr = to_mmr(ibmr);
+ int n;
+
+ mr->ndescs = 0;
+
+ ib_dma_sync_single_for_cpu(ibmr->device, mr->desc_map,
+ mr->desc_size * mr->max_descs,
+ DMA_TO_DEVICE);
+
+ n = ib_sg_to_pages(ibmr, sg, sg_nents, mlx5_set_page);
+
+ ib_dma_sync_single_for_device(ibmr->device, mr->desc_map,
+ mr->desc_size * mr->max_descs,
+ DMA_TO_DEVICE);
+
+ return n;
+}
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 9bad68820061..da2b46c2624a 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -65,6 +65,7 @@ static const u32 mlx5_ib_opcode[] = {
[IB_WR_SEND_WITH_INV] = MLX5_OPCODE_SEND_INVAL,
[IB_WR_LOCAL_INV] = MLX5_OPCODE_UMR,
[IB_WR_FAST_REG_MR] = MLX5_OPCODE_UMR,
+ [IB_WR_REG_MR] = MLX5_OPCODE_UMR,
[IB_WR_MASKED_ATOMIC_CMP_AND_SWP] = MLX5_OPCODE_ATOMIC_MASKED_CS,
[IB_WR_MASKED_ATOMIC_FETCH_AND_ADD] = MLX5_OPCODE_ATOMIC_MASKED_FA,
[MLX5_IB_WR_UMR] = MLX5_OPCODE_UMR,
@@ -1896,6 +1897,17 @@ static __be64 sig_mkey_mask(void)
return cpu_to_be64(result);
}
+static void set_reg_umr_seg(struct mlx5_wqe_umr_ctrl_seg *umr,
+ struct mlx5_ib_mr *mr)
+{
+ int ndescs = mr->ndescs;
+
+ memset(umr, 0, sizeof(*umr));
+ umr->flags = MLX5_UMR_CHECK_NOT_FREE;
+ umr->klm_octowords = get_klm_octo(ndescs);
+ umr->mkey_mask = frwr_mkey_mask();
+}
+
static void set_frwr_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
struct ib_send_wr *wr, int li)
{
@@ -1987,6 +1999,22 @@ static u8 get_umr_flags(int acc)
MLX5_PERM_LOCAL_READ | MLX5_PERM_UMR_EN;
}
+static void set_reg_mkey_seg(struct mlx5_mkey_seg *seg,
+ struct mlx5_ib_mr *mr,
+ u32 key, int access)
+{
+ int ndescs = ALIGN(mr->ndescs, 8) >> 1;
+
+ memset(seg, 0, sizeof(*seg));
+ seg->flags = get_umr_flags(access) | MLX5_ACCESS_MODE_MTT;
+ seg->qpn_mkey7_0 = cpu_to_be32((key & 0xff) | 0xffffff00);
+ seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL);
+ seg->start_addr = cpu_to_be64(mr->ibmr.iova);
+ seg->len = cpu_to_be64(mr->ibmr.length);
+ seg->xlt_oct_size = cpu_to_be32(ndescs);
+ seg->log2_page_size = ilog2(mr->ibmr.page_size);
+}
+
static void set_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *wr,
int li, int *writ)
{
@@ -2028,6 +2056,17 @@ static void set_reg_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *w
mlx5_mkey_variant(umrwr->mkey));
}
+static void set_reg_data_seg(struct mlx5_wqe_data_seg *dseg,
+ struct mlx5_ib_mr *mr,
+ struct mlx5_ib_pd *pd)
+{
+ int bcount = mr->desc_size * mr->ndescs;
+
+ dseg->addr = cpu_to_be64(mr->desc_map);
+ dseg->byte_count = cpu_to_be32(ALIGN(bcount, 64));
+ dseg->lkey = cpu_to_be32(pd->ibpd.local_dma_lkey);
+}
+
static void set_frwr_pages(struct mlx5_wqe_data_seg *dseg,
struct ib_send_wr *wr,
struct mlx5_core_dev *mdev,
@@ -2433,6 +2472,38 @@ static int set_psv_wr(struct ib_sig_domain *domain,
return 0;
}
+static int set_reg_wr(struct mlx5_ib_qp *qp,
+ struct ib_reg_wr *wr,
+ void **seg, int *size)
+{
+ struct mlx5_ib_mr *mr = to_mmr(wr->mr);
+ struct mlx5_ib_pd *pd = to_mpd(qp->ibqp.pd);
+
+ if (unlikely(wr->wr.send_flags & IB_SEND_INLINE)) {
+ mlx5_ib_warn(to_mdev(qp->ibqp.device),
+ "Invalid IB_SEND_INLINE send flag\n");
+ return -EINVAL;
+ }
+
+ set_reg_umr_seg(*seg, mr);
+ *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
+ *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
+ if (unlikely((*seg == qp->sq.qend)))
+ *seg = mlx5_get_send_wqe(qp, 0);
+
+ set_reg_mkey_seg(*seg, mr, wr->key, wr->access);
+ *seg += sizeof(struct mlx5_mkey_seg);
+ *size += sizeof(struct mlx5_mkey_seg) / 16;
+ if (unlikely((*seg == qp->sq.qend)))
+ *seg = mlx5_get_send_wqe(qp, 0);
+
+ set_reg_data_seg(*seg, mr, pd);
+ *seg += sizeof(struct mlx5_wqe_data_seg);
+ *size += (sizeof(struct mlx5_wqe_data_seg) / 16);
+
+ return 0;
+}
+
static int set_frwr_li_wr(void **seg, struct ib_send_wr *wr, int *size,
struct mlx5_core_dev *mdev, struct mlx5_ib_pd *pd, struct mlx5_ib_qp *qp)
{
@@ -2675,6 +2746,18 @@ int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
num_sge = 0;
break;
+ case IB_WR_REG_MR:
+ next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
+ qp->sq.wr_data[idx] = IB_WR_REG_MR;
+ ctrl->imm = cpu_to_be32(reg_wr(wr)->key);
+ err = set_reg_wr(qp, reg_wr(wr), &seg, &size);
+ if (err) {
+ *bad_wr = wr;
+ goto out;
+ }
+ num_sge = 0;
+ break;
+
case IB_WR_REG_SIG_MR:
qp->sq.wr_data[idx] = IB_WR_REG_SIG_MR;
mr = to_mmr(sig_handover_wr(wr)->sig_mr);
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 04/26] IB/mlx4: Support the new memory registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (2 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 03/26] IB/mlx5: Support the new memory registration API Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 05/26] RDMA/ocrdma: " Sagi Grimberg
` (22 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Support the new memory registration API by allocating a
private page list array in mlx4_ib_mr and populate it when
mlx4_ib_map_mr_sg is invoked. Also, support IB_WR_REG_MR
by setting the exact WQE as IB_WR_FAST_REG_MR, just take the
needed information from different places:
- page_size, iova, length, access flags (ib_mr)
- page array (mlx4_ib_mr)
- key (ib_reg_wr)
The IB_WR_FAST_REG_MR handlers will be removed later when
all the ULPs will be converted.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Tested-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/hw/mlx4/cq.c | 1 +
drivers/infiniband/hw/mlx4/main.c | 1 +
drivers/infiniband/hw/mlx4/mlx4_ib.h | 10 ++++
drivers/infiniband/hw/mlx4/mr.c | 101 ++++++++++++++++++++++++++++++++---
drivers/infiniband/hw/mlx4/qp.c | 25 +++++++++
5 files changed, 132 insertions(+), 6 deletions(-)
diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c
index 5fd49f9435f9..2ea4125b7903 100644
--- a/drivers/infiniband/hw/mlx4/cq.c
+++ b/drivers/infiniband/hw/mlx4/cq.c
@@ -819,6 +819,7 @@ repoll:
break;
case MLX4_OPCODE_FMR:
wc->opcode = IB_WC_FAST_REG_MR;
+ /* TODO: wc->opcode = IB_WC_REG_MR; */
break;
case MLX4_OPCODE_LOCAL_INVAL:
wc->opcode = IB_WC_LOCAL_INV;
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 38be8dc2932e..19191ac0783c 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -2249,6 +2249,7 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
ibdev->ib_dev.rereg_user_mr = mlx4_ib_rereg_user_mr;
ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr;
ibdev->ib_dev.alloc_mr = mlx4_ib_alloc_mr;
+ ibdev->ib_dev.map_mr_sg = mlx4_ib_map_mr_sg;
ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list;
ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach;
diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h
index 1e7b23bb2eb0..0f2ce20bd359 100644
--- a/drivers/infiniband/hw/mlx4/mlx4_ib.h
+++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h
@@ -129,10 +129,17 @@ struct mlx4_ib_cq {
struct list_head recv_qp_list;
};
+#define MLX4_MR_PAGES_ALIGN 0x40
+
struct mlx4_ib_mr {
struct ib_mr ibmr;
+ __be64 *pages;
+ dma_addr_t page_map;
+ u32 npages;
+ u32 max_pages;
struct mlx4_mr mmr;
struct ib_umem *umem;
+ void *pages_alloc;
};
struct mlx4_ib_mw {
@@ -706,6 +713,9 @@ int mlx4_ib_dealloc_mw(struct ib_mw *mw);
struct ib_mr *mlx4_ib_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg);
+int mlx4_ib_map_mr_sg(struct ib_mr *ibmr,
+ struct scatterlist *sg,
+ int sg_nents);
struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
int page_list_len);
void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c
index 5bba176e9dfa..e5a32e4520e8 100644
--- a/drivers/infiniband/hw/mlx4/mr.c
+++ b/drivers/infiniband/hw/mlx4/mr.c
@@ -59,7 +59,7 @@ struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc)
struct mlx4_ib_mr *mr;
int err;
- mr = kmalloc(sizeof *mr, GFP_KERNEL);
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
if (!mr)
return ERR_PTR(-ENOMEM);
@@ -140,7 +140,7 @@ struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
int err;
int n;
- mr = kmalloc(sizeof *mr, GFP_KERNEL);
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
if (!mr)
return ERR_PTR(-ENOMEM);
@@ -271,11 +271,59 @@ release_mpt_entry:
return err;
}
+static int
+mlx4_alloc_priv_pages(struct ib_device *device,
+ struct mlx4_ib_mr *mr,
+ int max_pages)
+{
+ int size = max_pages * sizeof(u64);
+ int add_size;
+ int ret;
+
+ add_size = max_t(int, MLX4_MR_PAGES_ALIGN - ARCH_KMALLOC_MINALIGN, 0);
+
+ mr->pages_alloc = kzalloc(size + add_size, GFP_KERNEL);
+ if (!mr->pages_alloc)
+ return -ENOMEM;
+
+ mr->pages = PTR_ALIGN(mr->pages_alloc, MLX4_MR_PAGES_ALIGN);
+
+ mr->page_map = dma_map_single(device->dma_device, mr->pages,
+ size, DMA_TO_DEVICE);
+
+ if (dma_mapping_error(device->dma_device, mr->page_map)) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ return 0;
+err:
+ kfree(mr->pages_alloc);
+
+ return ret;
+}
+
+static void
+mlx4_free_priv_pages(struct mlx4_ib_mr *mr)
+{
+ if (mr->pages) {
+ struct ib_device *device = mr->ibmr.device;
+ int size = mr->max_pages * sizeof(u64);
+
+ dma_unmap_single(device->dma_device, mr->page_map,
+ size, DMA_TO_DEVICE);
+ kfree(mr->pages_alloc);
+ mr->pages = NULL;
+ }
+}
+
int mlx4_ib_dereg_mr(struct ib_mr *ibmr)
{
struct mlx4_ib_mr *mr = to_mmr(ibmr);
int ret;
+ mlx4_free_priv_pages(mr);
+
ret = mlx4_mr_free(to_mdev(ibmr->device)->dev, &mr->mmr);
if (ret)
return ret;
@@ -362,7 +410,7 @@ struct ib_mr *mlx4_ib_alloc_mr(struct ib_pd *pd,
max_num_sg > MLX4_MAX_FAST_REG_PAGES)
return ERR_PTR(-EINVAL);
- mr = kmalloc(sizeof *mr, GFP_KERNEL);
+ mr = kzalloc(sizeof(*mr), GFP_KERNEL);
if (!mr)
return ERR_PTR(-ENOMEM);
@@ -371,18 +419,25 @@ struct ib_mr *mlx4_ib_alloc_mr(struct ib_pd *pd,
if (err)
goto err_free;
+ err = mlx4_alloc_priv_pages(pd->device, mr, max_num_sg);
+ if (err)
+ goto err_free_mr;
+
+ mr->max_pages = max_num_sg;
+
err = mlx4_mr_enable(dev->dev, &mr->mmr);
if (err)
- goto err_mr;
+ goto err_free_pl;
mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key;
mr->umem = NULL;
return &mr->ibmr;
-err_mr:
+err_free_pl:
+ mlx4_free_priv_pages(mr);
+err_free_mr:
(void) mlx4_mr_free(dev->dev, &mr->mmr);
-
err_free:
kfree(mr);
return ERR_PTR(err);
@@ -528,3 +583,37 @@ int mlx4_ib_fmr_dealloc(struct ib_fmr *ibfmr)
return err;
}
+
+static int mlx4_set_page(struct ib_mr *ibmr, u64 addr)
+{
+ struct mlx4_ib_mr *mr = to_mmr(ibmr);
+
+ if (unlikely(mr->npages == mr->max_pages))
+ return -ENOMEM;
+
+ mr->pages[mr->npages++] = cpu_to_be64(addr | MLX4_MTT_FLAG_PRESENT);
+
+ return 0;
+}
+
+int mlx4_ib_map_mr_sg(struct ib_mr *ibmr,
+ struct scatterlist *sg,
+ int sg_nents)
+{
+ struct mlx4_ib_mr *mr = to_mmr(ibmr);
+ int rc;
+
+ mr->npages = 0;
+
+ ib_dma_sync_single_for_cpu(ibmr->device, mr->page_map,
+ sizeof(u64) * mr->max_pages,
+ DMA_TO_DEVICE);
+
+ rc = ib_sg_to_pages(ibmr, sg, sg_nents, mlx4_set_page);
+
+ ib_dma_sync_single_for_device(ibmr->device, mr->page_map,
+ sizeof(u64) * mr->max_pages,
+ DMA_TO_DEVICE);
+
+ return rc;
+}
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index 3831cddb551f..850d4e9c13c5 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -112,6 +112,7 @@ static const __be32 mlx4_ib_opcode[] = {
[IB_WR_SEND_WITH_INV] = cpu_to_be32(MLX4_OPCODE_SEND_INVAL),
[IB_WR_LOCAL_INV] = cpu_to_be32(MLX4_OPCODE_LOCAL_INVAL),
[IB_WR_FAST_REG_MR] = cpu_to_be32(MLX4_OPCODE_FMR),
+ [IB_WR_REG_MR] = cpu_to_be32(MLX4_OPCODE_FMR),
[IB_WR_MASKED_ATOMIC_CMP_AND_SWP] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_CS),
[IB_WR_MASKED_ATOMIC_FETCH_AND_ADD] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_FA),
[IB_WR_BIND_MW] = cpu_to_be32(MLX4_OPCODE_BIND_MW),
@@ -2405,6 +2406,22 @@ static __be32 convert_access(int acc)
cpu_to_be32(MLX4_WQE_FMR_PERM_LOCAL_READ);
}
+static void set_reg_seg(struct mlx4_wqe_fmr_seg *fseg,
+ struct ib_reg_wr *wr)
+{
+ struct mlx4_ib_mr *mr = to_mmr(wr->mr);
+
+ fseg->flags = convert_access(wr->access);
+ fseg->mem_key = cpu_to_be32(wr->key);
+ fseg->buf_list = cpu_to_be64(mr->page_map);
+ fseg->start_addr = cpu_to_be64(mr->ibmr.iova);
+ fseg->reg_len = cpu_to_be64(mr->ibmr.length);
+ fseg->offset = 0; /* XXX -- is this just for ZBVA? */
+ fseg->page_size = cpu_to_be32(ilog2(mr->ibmr.page_size));
+ fseg->reserved[0] = 0;
+ fseg->reserved[1] = 0;
+}
+
static void set_fmr_seg(struct mlx4_wqe_fmr_seg *fseg,
struct ib_fast_reg_wr *wr)
{
@@ -2766,6 +2783,14 @@ int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
size += sizeof (struct mlx4_wqe_fmr_seg) / 16;
break;
+ case IB_WR_REG_MR:
+ ctrl->srcrb_flags |=
+ cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER);
+ set_reg_seg(wqe, reg_wr(wr));
+ wqe += sizeof(struct mlx4_wqe_fmr_seg);
+ size += sizeof(struct mlx4_wqe_fmr_seg) / 16;
+ break;
+
case IB_WR_BIND_MW:
ctrl->srcrb_flags |=
cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER);
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 05/26] RDMA/ocrdma: Support the new memory registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (3 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 04/26] IB/mlx4: " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 06/26] RDMA/cxgb3: " Sagi Grimberg
` (21 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Support the new memory registration API by allocating a
private page list array in ocrdma_mr and populate it when
ocrdma_map_mr_sg is invoked. Also, support IB_WR_REG_MR
by duplicating IB_WR_FAST_REG_MR, but take the needed
information from different places:
- page_size, iova, length, access flags (ib_mr)
- page array (ocrdma_mr)
- key (ib_reg_wr)
The IB_WR_FAST_REG_MR handlers will be removed later when
all the ULPs will be converted.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/hw/ocrdma/ocrdma.h | 2 +
drivers/infiniband/hw/ocrdma/ocrdma_main.c | 1 +
drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 90 +++++++++++++++++++++++++++++
drivers/infiniband/hw/ocrdma/ocrdma_verbs.h | 3 +
4 files changed, 96 insertions(+)
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma.h b/drivers/infiniband/hw/ocrdma/ocrdma.h
index b4091ab48db0..c2f3af5d5194 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma.h
@@ -193,6 +193,8 @@ struct ocrdma_mr {
struct ib_mr ibmr;
struct ib_umem *umem;
struct ocrdma_hw_mr hwmr;
+ u64 *pages;
+ u32 npages;
};
struct ocrdma_stats {
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_main.c b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
index 87aa55df7c82..874beb4b07a1 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_main.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
@@ -182,6 +182,7 @@ static int ocrdma_register_device(struct ocrdma_dev *dev)
dev->ibdev.reg_user_mr = ocrdma_reg_user_mr;
dev->ibdev.alloc_mr = ocrdma_alloc_mr;
+ dev->ibdev.map_mr_sg = ocrdma_map_mr_sg;
dev->ibdev.alloc_fast_reg_page_list = ocrdma_alloc_frmr_page_list;
dev->ibdev.free_fast_reg_page_list = ocrdma_free_frmr_page_list;
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
index eb09e224acb9..3c277c81456a 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
@@ -1013,6 +1013,7 @@ int ocrdma_dereg_mr(struct ib_mr *ib_mr)
(void) ocrdma_mbx_dealloc_lkey(dev, mr->hwmr.fr_mr, mr->hwmr.lkey);
+ kfree(mr->pages);
ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr);
/* it could be user registered memory. */
@@ -2177,6 +2178,61 @@ static int get_encoded_page_size(int pg_sz)
return i;
}
+static int ocrdma_build_reg(struct ocrdma_qp *qp,
+ struct ocrdma_hdr_wqe *hdr,
+ struct ib_reg_wr *wr)
+{
+ u64 fbo;
+ struct ocrdma_ewqe_fr *fast_reg = (struct ocrdma_ewqe_fr *)(hdr + 1);
+ struct ocrdma_mr *mr = get_ocrdma_mr(wr->mr);
+ struct ocrdma_pbl *pbl_tbl = mr->hwmr.pbl_table;
+ struct ocrdma_pbe *pbe;
+ u32 wqe_size = sizeof(*fast_reg) + sizeof(*hdr);
+ int num_pbes = 0, i;
+
+ wqe_size = roundup(wqe_size, OCRDMA_WQE_ALIGN_BYTES);
+
+ hdr->cw |= (OCRDMA_FR_MR << OCRDMA_WQE_OPCODE_SHIFT);
+ hdr->cw |= ((wqe_size / OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT);
+
+ if (wr->access & IB_ACCESS_LOCAL_WRITE)
+ hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_LOCAL_WR;
+ if (wr->access & IB_ACCESS_REMOTE_WRITE)
+ hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_REMOTE_WR;
+ if (wr->access & IB_ACCESS_REMOTE_READ)
+ hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_REMOTE_RD;
+ hdr->lkey = wr->key;
+ hdr->total_len = mr->ibmr.length;
+
+ fbo = mr->ibmr.iova - mr->pages[0];
+
+ fast_reg->va_hi = upper_32_bits(mr->ibmr.iova);
+ fast_reg->va_lo = (u32) (mr->ibmr.iova & 0xffffffff);
+ fast_reg->fbo_hi = upper_32_bits(fbo);
+ fast_reg->fbo_lo = (u32) fbo & 0xffffffff;
+ fast_reg->num_sges = mr->npages;
+ fast_reg->size_sge = get_encoded_page_size(mr->ibmr.page_size);
+
+ pbe = pbl_tbl->va;
+ for (i = 0; i < mr->npages; i++) {
+ u64 buf_addr = mr->pages[i];
+
+ pbe->pa_lo = cpu_to_le32((u32) (buf_addr & PAGE_MASK));
+ pbe->pa_hi = cpu_to_le32((u32) upper_32_bits(buf_addr));
+ num_pbes += 1;
+ pbe++;
+
+ /* if the pbl is full storing the pbes,
+ * move to next pbl.
+ */
+ if (num_pbes == (mr->hwmr.pbl_size/sizeof(u64))) {
+ pbl_tbl++;
+ pbe = (struct ocrdma_pbe *)pbl_tbl->va;
+ }
+ }
+
+ return 0;
+}
static int ocrdma_build_fr(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr,
struct ib_send_wr *send_wr)
@@ -2304,6 +2360,9 @@ int ocrdma_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
case IB_WR_FAST_REG_MR:
status = ocrdma_build_fr(qp, hdr, wr);
break;
+ case IB_WR_REG_MR:
+ status = ocrdma_build_reg(qp, hdr, reg_wr(wr));
+ break;
default:
status = -EINVAL;
break;
@@ -3059,6 +3118,12 @@ struct ib_mr *ocrdma_alloc_mr(struct ib_pd *ibpd,
if (!mr)
return ERR_PTR(-ENOMEM);
+ mr->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL);
+ if (!mr->pages) {
+ status = -ENOMEM;
+ goto pl_err;
+ }
+
status = ocrdma_get_pbl_info(dev, mr, max_num_sg);
if (status)
goto pbl_err;
@@ -3082,6 +3147,8 @@ struct ib_mr *ocrdma_alloc_mr(struct ib_pd *ibpd,
mbx_err:
ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr);
pbl_err:
+ kfree(mr->pages);
+pl_err:
kfree(mr);
return ERR_PTR(-ENOMEM);
}
@@ -3268,3 +3335,26 @@ pbl_err:
kfree(mr);
return ERR_PTR(status);
}
+
+static int ocrdma_set_page(struct ib_mr *ibmr, u64 addr)
+{
+ struct ocrdma_mr *mr = get_ocrdma_mr(ibmr);
+
+ if (unlikely(mr->npages == mr->hwmr.num_pbes))
+ return -ENOMEM;
+
+ mr->pages[mr->npages++] = addr;
+
+ return 0;
+}
+
+int ocrdma_map_mr_sg(struct ib_mr *ibmr,
+ struct scatterlist *sg,
+ int sg_nents)
+{
+ struct ocrdma_mr *mr = get_ocrdma_mr(ibmr);
+
+ mr->npages = 0;
+
+ return ib_sg_to_pages(ibmr, sg, sg_nents, ocrdma_set_page);
+}
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h
index 308c16857a5d..1b2d3ac10203 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h
@@ -125,6 +125,9 @@ struct ib_mr *ocrdma_reg_user_mr(struct ib_pd *, u64 start, u64 length,
struct ib_mr *ocrdma_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg);
+int ocrdma_map_mr_sg(struct ib_mr *ibmr,
+ struct scatterlist *sg,
+ int sg_nents);
struct ib_fast_reg_page_list *ocrdma_alloc_frmr_page_list(struct ib_device
*ibdev,
int page_list_len);
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 06/26] RDMA/cxgb3: Support the new memory registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (4 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 05/26] RDMA/ocrdma: " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 07/26] iw_cxgb4: " Sagi Grimberg
` (20 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Support the new memory registration API by allocating a
private page list array in iwch_mr and populate it when
iwch_map_mr_sg is invoked. Also, support IB_WR_REG_MR
by duplicating build_fastreg just take the needed information
from different places:
- page_size, iova, length (ib_mr)
- page array (iwch_mr)
- key, access flags (ib_reg_wr)
The IB_WR_FAST_REG_MR handlers will be removed later when
all the ULPs will be converted.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/hw/cxgb3/iwch_provider.c | 33 ++++++++++++++++++++
drivers/infiniband/hw/cxgb3/iwch_provider.h | 2 ++
drivers/infiniband/hw/cxgb3/iwch_qp.c | 48 +++++++++++++++++++++++++++++
3 files changed, 83 insertions(+)
diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index 93308c45f298..f7b915378343 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -463,6 +463,7 @@ static int iwch_dereg_mr(struct ib_mr *ib_mr)
return -EINVAL;
mhp = to_iwch_mr(ib_mr);
+ kfree(mhp->pages);
rhp = mhp->rhp;
mmid = mhp->attr.stag >> 8;
cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
@@ -821,6 +822,12 @@ static struct ib_mr *iwch_alloc_mr(struct ib_pd *pd,
if (!mhp)
goto err;
+ mhp->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL);
+ if (!mhp->pages) {
+ ret = -ENOMEM;
+ goto pl_err;
+ }
+
mhp->rhp = rhp;
ret = iwch_alloc_pbl(mhp, max_num_sg);
if (ret)
@@ -847,11 +854,36 @@ err3:
err2:
iwch_free_pbl(mhp);
err1:
+ kfree(mhp->pages);
+pl_err:
kfree(mhp);
err:
return ERR_PTR(ret);
}
+static int iwch_set_page(struct ib_mr *ibmr, u64 addr)
+{
+ struct iwch_mr *mhp = to_iwch_mr(ibmr);
+
+ if (unlikely(mhp->npages == mhp->attr.pbl_size))
+ return -ENOMEM;
+
+ mhp->pages[mhp->npages++] = addr;
+
+ return 0;
+}
+
+static int iwch_map_mr_sg(struct ib_mr *ibmr,
+ struct scatterlist *sg,
+ int sg_nents)
+{
+ struct iwch_mr *mhp = to_iwch_mr(ibmr);
+
+ mhp->npages = 0;
+
+ return ib_sg_to_pages(ibmr, sg, sg_nents, iwch_set_page);
+}
+
static struct ib_fast_reg_page_list *iwch_alloc_fastreg_pbl(
struct ib_device *device,
int page_list_len)
@@ -1450,6 +1482,7 @@ int iwch_register_device(struct iwch_dev *dev)
dev->ibdev.bind_mw = iwch_bind_mw;
dev->ibdev.dealloc_mw = iwch_dealloc_mw;
dev->ibdev.alloc_mr = iwch_alloc_mr;
+ dev->ibdev.map_mr_sg = iwch_map_mr_sg;
dev->ibdev.alloc_fast_reg_page_list = iwch_alloc_fastreg_pbl;
dev->ibdev.free_fast_reg_page_list = iwch_free_fastreg_pbl;
dev->ibdev.attach_mcast = iwch_multicast_attach;
diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.h b/drivers/infiniband/hw/cxgb3/iwch_provider.h
index 87c14b0c5ac0..2ac85b86a680 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.h
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.h
@@ -77,6 +77,8 @@ struct iwch_mr {
struct iwch_dev *rhp;
u64 kva;
struct tpt_attributes attr;
+ u64 *pages;
+ u32 npages;
};
typedef struct iwch_mw iwch_mw_handle;
diff --git a/drivers/infiniband/hw/cxgb3/iwch_qp.c b/drivers/infiniband/hw/cxgb3/iwch_qp.c
index bac0508fedd9..a09ea538e990 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_qp.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_qp.c
@@ -146,6 +146,49 @@ static int build_rdma_read(union t3_wr *wqe, struct ib_send_wr *wr,
return 0;
}
+static int build_memreg(union t3_wr *wqe, struct ib_reg_wr *wr,
+ u8 *flit_cnt, int *wr_cnt, struct t3_wq *wq)
+{
+ struct iwch_mr *mhp = to_iwch_mr(wr->mr);
+ int i;
+ __be64 *p;
+
+ if (mhp->npages > T3_MAX_FASTREG_DEPTH)
+ return -EINVAL;
+ *wr_cnt = 1;
+ wqe->fastreg.stag = cpu_to_be32(wr->key);
+ wqe->fastreg.len = cpu_to_be32(mhp->ibmr.length);
+ wqe->fastreg.va_base_hi = cpu_to_be32(mhp->ibmr.iova >> 32);
+ wqe->fastreg.va_base_lo_fbo =
+ cpu_to_be32(mhp->ibmr.iova & 0xffffffff);
+ wqe->fastreg.page_type_perms = cpu_to_be32(
+ V_FR_PAGE_COUNT(mhp->npages) |
+ V_FR_PAGE_SIZE(ilog2(wr->mr->page_size) - 12) |
+ V_FR_TYPE(TPT_VATO) |
+ V_FR_PERMS(iwch_ib_to_tpt_access(wr->access)));
+ p = &wqe->fastreg.pbl_addrs[0];
+ for (i = 0; i < mhp->npages; i++, p++) {
+
+ /* If we need a 2nd WR, then set it up */
+ if (i == T3_MAX_FASTREG_FRAG) {
+ *wr_cnt = 2;
+ wqe = (union t3_wr *)(wq->queue +
+ Q_PTR2IDX((wq->wptr+1), wq->size_log2));
+ build_fw_riwrh((void *)wqe, T3_WR_FASTREG, 0,
+ Q_GENBIT(wq->wptr + 1, wq->size_log2),
+ 0, 1 + mhp->npages - T3_MAX_FASTREG_FRAG,
+ T3_EOP);
+
+ p = &wqe->pbl_frag.pbl_addrs[0];
+ }
+ *p = cpu_to_be64((u64)mhp->pages[i]);
+ }
+ *flit_cnt = 5 + mhp->npages;
+ if (*flit_cnt > 15)
+ *flit_cnt = 15;
+ return 0;
+}
+
static int build_fastreg(union t3_wr *wqe, struct ib_send_wr *send_wr,
u8 *flit_cnt, int *wr_cnt, struct t3_wq *wq)
{
@@ -419,6 +462,11 @@ int iwch_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
err = build_fastreg(wqe, wr, &t3_wr_flit_cnt,
&wr_cnt, &qhp->wq);
break;
+ case IB_WR_REG_MR:
+ t3_wr_opcode = T3_WR_FASTREG;
+ err = build_memreg(wqe, reg_wr(wr), &t3_wr_flit_cnt,
+ &wr_cnt, &qhp->wq);
+ break;
case IB_WR_LOCAL_INV:
if (wr->send_flags & IB_SEND_FENCE)
t3_wr_flags |= T3_LOCAL_FENCE_FLAG;
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 07/26] iw_cxgb4: Support the new memory registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (5 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 06/26] RDMA/cxgb3: " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 08/26] IB/qib: " Sagi Grimberg
` (19 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Support the new memory registration API by allocating a
private page list array in c4iw_mr and populate it when
c4iw_map_mr_sg is invoked. Also, support IB_WR_REG_MR
by duplicating build_fastreg just take the needed information
from different places:
- page_size, iova, length (ib_mr)
- page array (c4iw_mr)
- key, access flags (ib_reg_wr)
The IB_WR_FAST_REG_MR handlers will be removed later when
all the ULPs will be converted.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Tested-by: Steve Wise <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
---
drivers/infiniband/hw/cxgb4/iw_cxgb4.h | 7 ++++
drivers/infiniband/hw/cxgb4/mem.c | 38 +++++++++++++++++
drivers/infiniband/hw/cxgb4/provider.c | 1 +
drivers/infiniband/hw/cxgb4/qp.c | 74 ++++++++++++++++++++++++++++++++++
4 files changed, 120 insertions(+)
diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
index c7bb38c931a5..6a8e2696455f 100644
--- a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
+++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
@@ -386,6 +386,10 @@ struct c4iw_mr {
struct c4iw_dev *rhp;
u64 kva;
struct tpt_attributes attr;
+ u64 *mpl;
+ dma_addr_t mpl_addr;
+ u32 max_mpl_len;
+ u32 mpl_len;
};
static inline struct c4iw_mr *to_c4iw_mr(struct ib_mr *ibmr)
@@ -973,6 +977,9 @@ struct ib_fast_reg_page_list *c4iw_alloc_fastreg_pbl(
struct ib_mr *c4iw_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg);
+int c4iw_map_mr_sg(struct ib_mr *ibmr,
+ struct scatterlist *sg,
+ int sg_nents);
int c4iw_dealloc_mw(struct ib_mw *mw);
struct ib_mw *c4iw_alloc_mw(struct ib_pd *pd, enum ib_mw_type type);
struct ib_mr *c4iw_reg_user_mr(struct ib_pd *pd, u64 start,
diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c
index 026b91ebd5e2..96fc02879955 100644
--- a/drivers/infiniband/hw/cxgb4/mem.c
+++ b/drivers/infiniband/hw/cxgb4/mem.c
@@ -863,6 +863,7 @@ struct ib_mr *c4iw_alloc_mr(struct ib_pd *pd,
u32 mmid;
u32 stag = 0;
int ret = 0;
+ int length = roundup(max_num_sg * sizeof(u64), 32);
if (mr_type != IB_MR_TYPE_MEM_REG ||
max_num_sg > t4_max_fr_depth(use_dsgl))
@@ -876,6 +877,14 @@ struct ib_mr *c4iw_alloc_mr(struct ib_pd *pd,
goto err;
}
+ mhp->mpl = dma_alloc_coherent(&rhp->rdev.lldi.pdev->dev,
+ length, &mhp->mpl_addr, GFP_KERNEL);
+ if (!mhp->mpl) {
+ ret = -ENOMEM;
+ goto err_mpl;
+ }
+ mhp->max_mpl_len = length;
+
mhp->rhp = rhp;
ret = alloc_pbl(mhp, max_num_sg);
if (ret)
@@ -905,11 +914,37 @@ err2:
c4iw_pblpool_free(&mhp->rhp->rdev, mhp->attr.pbl_addr,
mhp->attr.pbl_size << 3);
err1:
+ dma_free_coherent(&mhp->rhp->rdev.lldi.pdev->dev,
+ mhp->max_mpl_len, mhp->mpl, mhp->mpl_addr);
+err_mpl:
kfree(mhp);
err:
return ERR_PTR(ret);
}
+static int c4iw_set_page(struct ib_mr *ibmr, u64 addr)
+{
+ struct c4iw_mr *mhp = to_c4iw_mr(ibmr);
+
+ if (unlikely(mhp->mpl_len == mhp->max_mpl_len))
+ return -ENOMEM;
+
+ mhp->mpl[mhp->mpl_len++] = addr;
+
+ return 0;
+}
+
+int c4iw_map_mr_sg(struct ib_mr *ibmr,
+ struct scatterlist *sg,
+ int sg_nents)
+{
+ struct c4iw_mr *mhp = to_c4iw_mr(ibmr);
+
+ mhp->mpl_len = 0;
+
+ return ib_sg_to_pages(ibmr, sg, sg_nents, c4iw_set_page);
+}
+
struct ib_fast_reg_page_list *c4iw_alloc_fastreg_pbl(struct ib_device *device,
int page_list_len)
{
@@ -970,6 +1005,9 @@ int c4iw_dereg_mr(struct ib_mr *ib_mr)
rhp = mhp->rhp;
mmid = mhp->attr.stag >> 8;
remove_handle(rhp, &rhp->mmidr, mmid);
+ if (mhp->mpl)
+ dma_free_coherent(&mhp->rhp->rdev.lldi.pdev->dev,
+ mhp->max_mpl_len, mhp->mpl, mhp->mpl_addr);
dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
mhp->attr.pbl_addr);
if (mhp->attr.pbl_size)
diff --git a/drivers/infiniband/hw/cxgb4/provider.c b/drivers/infiniband/hw/cxgb4/provider.c
index 7746113552e7..55dedadcffaa 100644
--- a/drivers/infiniband/hw/cxgb4/provider.c
+++ b/drivers/infiniband/hw/cxgb4/provider.c
@@ -557,6 +557,7 @@ int c4iw_register_device(struct c4iw_dev *dev)
dev->ibdev.bind_mw = c4iw_bind_mw;
dev->ibdev.dealloc_mw = c4iw_dealloc_mw;
dev->ibdev.alloc_mr = c4iw_alloc_mr;
+ dev->ibdev.map_mr_sg = c4iw_map_mr_sg;
dev->ibdev.alloc_fast_reg_page_list = c4iw_alloc_fastreg_pbl;
dev->ibdev.free_fast_reg_page_list = c4iw_free_fastreg_pbl;
dev->ibdev.attach_mcast = c4iw_multicast_attach;
diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index b60498fff99a..12a23bc935f3 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -605,10 +605,76 @@ static int build_rdma_recv(struct c4iw_qp *qhp, union t4_recv_wr *wqe,
return 0;
}
+static int build_memreg(struct t4_sq *sq, union t4_wr *wqe,
+ struct ib_reg_wr *wr, u8 *len16, u8 t5dev)
+{
+ struct c4iw_mr *mhp = to_c4iw_mr(wr->mr);
+ struct fw_ri_immd *imdp;
+ __be64 *p;
+ int i;
+ int pbllen = roundup(mhp->mpl_len * sizeof(u64), 32);
+ int rem;
+
+ if (mhp->mpl_len > t4_max_fr_depth(use_dsgl))
+ return -EINVAL;
+
+ wqe->fr.qpbinde_to_dcacpu = 0;
+ wqe->fr.pgsz_shift = ilog2(wr->mr->page_size) - 12;
+ wqe->fr.addr_type = FW_RI_VA_BASED_TO;
+ wqe->fr.mem_perms = c4iw_ib_to_tpt_access(wr->access);
+ wqe->fr.len_hi = 0;
+ wqe->fr.len_lo = cpu_to_be32(mhp->ibmr.length);
+ wqe->fr.stag = cpu_to_be32(wr->key);
+ wqe->fr.va_hi = cpu_to_be32(mhp->ibmr.iova >> 32);
+ wqe->fr.va_lo_fbo = cpu_to_be32(mhp->ibmr.iova &
+ 0xffffffff);
+
+ if (t5dev && use_dsgl && (pbllen > max_fr_immd)) {
+ struct fw_ri_dsgl *sglp;
+
+ for (i = 0; i < mhp->mpl_len; i++)
+ mhp->mpl[i] = (__force u64)cpu_to_be64((u64)mhp->mpl[i]);
+
+ sglp = (struct fw_ri_dsgl *)(&wqe->fr + 1);
+ sglp->op = FW_RI_DATA_DSGL;
+ sglp->r1 = 0;
+ sglp->nsge = cpu_to_be16(1);
+ sglp->addr0 = cpu_to_be64(mhp->mpl_addr);
+ sglp->len0 = cpu_to_be32(pbllen);
+
+ *len16 = DIV_ROUND_UP(sizeof(wqe->fr) + sizeof(*sglp), 16);
+ } else {
+ imdp = (struct fw_ri_immd *)(&wqe->fr + 1);
+ imdp->op = FW_RI_DATA_IMMD;
+ imdp->r1 = 0;
+ imdp->r2 = 0;
+ imdp->immdlen = cpu_to_be32(pbllen);
+ p = (__be64 *)(imdp + 1);
+ rem = pbllen;
+ for (i = 0; i < mhp->mpl_len; i++) {
+ *p = cpu_to_be64((u64)mhp->mpl[i]);
+ rem -= sizeof(*p);
+ if (++p == (__be64 *)&sq->queue[sq->size])
+ p = (__be64 *)sq->queue;
+ }
+ BUG_ON(rem < 0);
+ while (rem) {
+ *p = 0;
+ rem -= sizeof(*p);
+ if (++p == (__be64 *)&sq->queue[sq->size])
+ p = (__be64 *)sq->queue;
+ }
+ *len16 = DIV_ROUND_UP(sizeof(wqe->fr) + sizeof(*imdp)
+ + pbllen, 16);
+ }
+ return 0;
+}
+
static int build_fastreg(struct t4_sq *sq, union t4_wr *wqe,
struct ib_send_wr *send_wr, u8 *len16, u8 t5dev)
{
struct ib_fast_reg_wr *wr = fast_reg_wr(send_wr);
+
struct fw_ri_immd *imdp;
__be64 *p;
int i;
@@ -817,6 +883,14 @@ int c4iw_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
qhp->rhp->rdev.lldi.adapter_type) ?
1 : 0);
break;
+ case IB_WR_REG_MR:
+ fw_opcode = FW_RI_FR_NSMR_WR;
+ swsqe->opcode = FW_RI_FAST_REGISTER;
+ err = build_memreg(&qhp->wq.sq, wqe, reg_wr(wr), &len16,
+ is_t5(
+ qhp->rhp->rdev.lldi.adapter_type) ?
+ 1 : 0);
+ break;
case IB_WR_LOCAL_INV:
if (wr->send_flags & IB_SEND_FENCE)
fw_flags |= FW_RI_LOCAL_FENCE_FLAG;
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 08/26] IB/qib: Support the new memory registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (6 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 07/26] iw_cxgb4: " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 09/26] RDMA/nes: " Sagi Grimberg
` (18 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Support the new memory registration API by allocating a
private page list array in qib_mr and populate it when
qib_map_mr_sg is invoked. Also, support IB_WR_REG_MR
by duplicating qib_fastreg_mr just take the needed information
from different places:
- page_size, iova, length (ib_mr)
- page array (qib_mr)
- key, access flags (ib_reg_wr)
The IB_WR_FAST_REG_MR handlers will be removed later when
all the ULPs will be converted.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/hw/qib/qib_keys.c | 56 +++++++++++++++++++++++++++++++++++
drivers/infiniband/hw/qib/qib_mr.c | 32 ++++++++++++++++++++
drivers/infiniband/hw/qib/qib_verbs.c | 9 +++++-
drivers/infiniband/hw/qib/qib_verbs.h | 8 +++++
4 files changed, 104 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/qib/qib_keys.c b/drivers/infiniband/hw/qib/qib_keys.c
index eaf139a33b2e..95b8b9110fc6 100644
--- a/drivers/infiniband/hw/qib/qib_keys.c
+++ b/drivers/infiniband/hw/qib/qib_keys.c
@@ -390,3 +390,59 @@ bail:
spin_unlock_irqrestore(&rkt->lock, flags);
return ret;
}
+
+/*
+ * Initialize the memory region specified by the work request.
+ */
+int qib_reg_mr(struct qib_qp *qp, struct ib_reg_wr *wr)
+{
+ struct qib_lkey_table *rkt = &to_idev(qp->ibqp.device)->lk_table;
+ struct qib_pd *pd = to_ipd(qp->ibqp.pd);
+ struct qib_mr *mr = to_imr(wr->mr);
+ struct qib_mregion *mrg;
+ u32 key = wr->key;
+ unsigned i, n, m;
+ int ret = -EINVAL;
+ unsigned long flags;
+ u64 *page_list;
+ size_t ps;
+
+ spin_lock_irqsave(&rkt->lock, flags);
+ if (pd->user || key == 0)
+ goto bail;
+
+ mrg = rcu_dereference_protected(
+ rkt->table[(key >> (32 - ib_qib_lkey_table_size))],
+ lockdep_is_held(&rkt->lock));
+ if (unlikely(mrg == NULL || qp->ibqp.pd != mrg->pd))
+ goto bail;
+
+ if (mr->npages > mrg->max_segs)
+ goto bail;
+
+ ps = mr->ibmr.page_size;
+ if (mr->ibmr.length > ps * mr->npages)
+ goto bail;
+
+ mrg->user_base = mr->ibmr.iova;
+ mrg->iova = mr->ibmr.iova;
+ mrg->lkey = key;
+ mrg->length = mr->ibmr.length;
+ mrg->access_flags = wr->access;
+ page_list = mr->pages;
+ m = 0;
+ n = 0;
+ for (i = 0; i < mr->npages; i++) {
+ mrg->map[m]->segs[n].vaddr = (void *) page_list[i];
+ mrg->map[m]->segs[n].length = ps;
+ if (++n == QIB_SEGSZ) {
+ m++;
+ n = 0;
+ }
+ }
+
+ ret = 0;
+bail:
+ spin_unlock_irqrestore(&rkt->lock, flags);
+ return ret;
+}
diff --git a/drivers/infiniband/hw/qib/qib_mr.c b/drivers/infiniband/hw/qib/qib_mr.c
index 19220dcb9a3b..dcabf1b2e263 100644
--- a/drivers/infiniband/hw/qib/qib_mr.c
+++ b/drivers/infiniband/hw/qib/qib_mr.c
@@ -303,6 +303,7 @@ int qib_dereg_mr(struct ib_mr *ibmr)
int ret = 0;
unsigned long timeout;
+ kfree(mr->pages);
qib_free_lkey(&mr->mr);
qib_put_mr(&mr->mr); /* will set completion if last */
@@ -340,7 +341,38 @@ struct ib_mr *qib_alloc_mr(struct ib_pd *pd,
if (IS_ERR(mr))
return (struct ib_mr *)mr;
+ mr->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL);
+ if (!mr->pages)
+ goto err;
+
return &mr->ibmr;
+
+err:
+ qib_dereg_mr(&mr->ibmr);
+ return ERR_PTR(-ENOMEM);
+}
+
+static int qib_set_page(struct ib_mr *ibmr, u64 addr)
+{
+ struct qib_mr *mr = to_imr(ibmr);
+
+ if (unlikely(mr->npages == mr->mr.max_segs))
+ return -ENOMEM;
+
+ mr->pages[mr->npages++] = addr;
+
+ return 0;
+}
+
+int qib_map_mr_sg(struct ib_mr *ibmr,
+ struct scatterlist *sg,
+ int sg_nents)
+{
+ struct qib_mr *mr = to_imr(ibmr);
+
+ mr->npages = 0;
+
+ return ib_sg_to_pages(ibmr, sg, sg_nents, qib_set_page);
}
struct ib_fast_reg_page_list *
diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
index a6b0b098ff30..a1e53d7b662b 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/drivers/infiniband/hw/qib/qib_verbs.c
@@ -362,7 +362,10 @@ static int qib_post_one_send(struct qib_qp *qp, struct ib_send_wr *wr,
* undefined operations.
* Make sure buffer is large enough to hold the result for atomics.
*/
- if (wr->opcode == IB_WR_FAST_REG_MR) {
+ if (wr->opcode == IB_WR_REG_MR) {
+ if (qib_reg_mr(qp, reg_wr(wr)))
+ goto bail_inval;
+ } else if (wr->opcode == IB_WR_FAST_REG_MR) {
if (qib_fast_reg_mr(qp, wr))
goto bail_inval;
} else if (qp->ibqp.qp_type == IB_QPT_UC) {
@@ -401,6 +404,9 @@ static int qib_post_one_send(struct qib_qp *qp, struct ib_send_wr *wr,
if (qp->ibqp.qp_type != IB_QPT_UC &&
qp->ibqp.qp_type != IB_QPT_RC)
memcpy(&wqe->ud_wr, ud_wr(wr), sizeof(wqe->ud_wr));
+ else if (wr->opcode == IB_WR_REG_MR)
+ memcpy(&wqe->reg_wr, reg_wr(wr),
+ sizeof(wqe->reg_wr));
else if (wr->opcode == IB_WR_FAST_REG_MR)
memcpy(&wqe->fast_reg_wr, fast_reg_wr(wr),
sizeof(wqe->fast_reg_wr));
@@ -2260,6 +2266,7 @@ int qib_register_ib_device(struct qib_devdata *dd)
ibdev->reg_user_mr = qib_reg_user_mr;
ibdev->dereg_mr = qib_dereg_mr;
ibdev->alloc_mr = qib_alloc_mr;
+ ibdev->map_mr_sg = qib_map_mr_sg;
ibdev->alloc_fast_reg_page_list = qib_alloc_fast_reg_page_list;
ibdev->free_fast_reg_page_list = qib_free_fast_reg_page_list;
ibdev->alloc_fmr = qib_alloc_fmr;
diff --git a/drivers/infiniband/hw/qib/qib_verbs.h b/drivers/infiniband/hw/qib/qib_verbs.h
index 8aa16851a5e6..648f6c64f00d 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.h
+++ b/drivers/infiniband/hw/qib/qib_verbs.h
@@ -330,6 +330,8 @@ struct qib_mr {
struct ib_mr ibmr;
struct ib_umem *umem;
struct qib_mregion mr; /* must be last */
+ u64 *pages;
+ u32 npages;
};
/*
@@ -341,6 +343,7 @@ struct qib_swqe {
union {
struct ib_send_wr wr; /* don't use wr.sg_list */
struct ib_ud_wr ud_wr;
+ struct ib_reg_wr reg_wr;
struct ib_fast_reg_wr fast_reg_wr;
struct ib_rdma_wr rdma_wr;
struct ib_atomic_wr atomic_wr;
@@ -1044,12 +1047,17 @@ struct ib_mr *qib_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_entries);
+int qib_map_mr_sg(struct ib_mr *ibmr,
+ struct scatterlist *sg,
+ int sg_nents);
+
struct ib_fast_reg_page_list *qib_alloc_fast_reg_page_list(
struct ib_device *ibdev, int page_list_len);
void qib_free_fast_reg_page_list(struct ib_fast_reg_page_list *pl);
int qib_fast_reg_mr(struct qib_qp *qp, struct ib_send_wr *wr);
+int qib_reg_mr(struct qib_qp *qp, struct ib_reg_wr *wr);
struct ib_fmr *qib_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
struct ib_fmr_attr *fmr_attr);
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 09/26] RDMA/nes: Support the new memory registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (7 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 08/26] IB/qib: " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 10/26] IB/iser: Port to new fast " Sagi Grimberg
` (17 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Support the new memory registration API by allocating a
private page list array in nes_mr and populate it when
nes_map_mr_sg is invoked. Also, support IB_WR_REG_MR
by duplicating IB_WR_FAST_REG_MR handling and take the
needed information from different places:
- page_size, iova, length (ib_mr)
- page array (nes_mr)
- key, access flags (ib_reg_wr)
The IB_WR_FAST_REG_MR handlers will be removed later when
all the ULPs will be converted.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/hw/nes/nes_verbs.c | 117 +++++++++++++++++++++++++++++++++-
drivers/infiniband/hw/nes/nes_verbs.h | 4 ++
2 files changed, 120 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
index f71b37b75f82..dc8a03b0ca0d 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -51,6 +51,7 @@ atomic_t qps_created;
atomic_t sw_qps_destroyed;
static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
+static int nes_dereg_mr(struct ib_mr *ib_mr);
/**
* nes_alloc_mw
@@ -443,9 +444,46 @@ static struct ib_mr *nes_alloc_mr(struct ib_pd *ibpd,
} else {
kfree(nesmr);
nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
- ibmr = ERR_PTR(-ENOMEM);
+ return ERR_PTR(-ENOMEM);
}
+
+ nesmr->pages = pci_alloc_consistent(nesdev->pcidev,
+ max_num_sg * sizeof(u64),
+ &nesmr->paddr);
+ if (!nesmr->paddr)
+ goto err;
+
+ nesmr->max_pages = max_num_sg;
+
return ibmr;
+
+err:
+ nes_dereg_mr(ibmr);
+
+ return ERR_PTR(-ENOMEM);
+}
+
+static int nes_set_page(struct ib_mr *ibmr, u64 addr)
+{
+ struct nes_mr *nesmr = to_nesmr(ibmr);
+
+ if (unlikely(nesmr->npages == nesmr->max_pages))
+ return -ENOMEM;
+
+ nesmr->pages[nesmr->npages++] = cpu_to_le64(addr);
+
+ return 0;
+}
+
+static int nes_map_mr_sg(struct ib_mr *ibmr,
+ struct scatterlist *sg,
+ int sg_nents)
+{
+ struct nes_mr *nesmr = to_nesmr(ibmr);
+
+ nesmr->npages = 0;
+
+ return ib_sg_to_pages(ibmr, sg, sg_nents, nes_set_page);
}
/*
@@ -2683,6 +2721,13 @@ static int nes_dereg_mr(struct ib_mr *ib_mr)
u16 major_code;
u16 minor_code;
+
+ if (nesmr->pages)
+ pci_free_consistent(nesdev->pcidev,
+ nesmr->max_pages * sizeof(u64),
+ nesmr->pages,
+ nesmr->paddr);
+
if (nesmr->region) {
ib_umem_release(nesmr->region);
}
@@ -3513,6 +3558,75 @@ static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
wqe_misc);
break;
}
+ case IB_WR_REG_MR:
+ {
+ struct nes_mr *mr = to_nesmr(reg_wr(ib_wr)->mr);
+ int page_shift = ilog2(reg_wr(ib_wr)->mr->page_size);
+ int flags = reg_wr(ib_wr)->access;
+
+ if (mr->npages > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
+ nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
+ err = -EINVAL;
+ break;
+ }
+ wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
+ set_wqe_64bit_value(wqe->wqe_words,
+ NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
+ mr->ibmr.iova);
+ set_wqe_32bit_value(wqe->wqe_words,
+ NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
+ mr->ibmr.length);
+ set_wqe_32bit_value(wqe->wqe_words,
+ NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
+ set_wqe_32bit_value(wqe->wqe_words,
+ NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
+ reg_wr(ib_wr)->key);
+
+ if (page_shift == 12) {
+ wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
+ } else if (page_shift == 21) {
+ wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
+ } else {
+ nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
+ " ib_wr=%u, max=1\n", ib_wr->num_sge);
+ err = -EINVAL;
+ break;
+ }
+
+ /* Set access_flags */
+ wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
+ if (flags & IB_ACCESS_LOCAL_WRITE)
+ wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
+
+ if (flags & IB_ACCESS_REMOTE_WRITE)
+ wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
+
+ if (flags & IB_ACCESS_REMOTE_READ)
+ wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
+
+ if (flags & IB_ACCESS_MW_BIND)
+ wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
+
+ /* Fill in PBL info: */
+ set_wqe_64bit_value(wqe->wqe_words,
+ NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
+ mr->paddr);
+
+ set_wqe_32bit_value(wqe->wqe_words,
+ NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
+ mr->npages * 8);
+
+ nes_debug(NES_DBG_IW_TX, "SQ_REG_MR: iova_start: %llx, "
+ "length: %d, rkey: %0x, pgl_paddr: %llx, "
+ "page_list_len: %u, wqe_misc: %x\n",
+ (unsigned long long) mr->ibmr.iova,
+ mr->ibmr.length,
+ reg_wr(ib_wr)->key,
+ (unsigned long long) mr->paddr,
+ mr->npages,
+ wqe_misc);
+ break;
+ }
default:
/* error */
err = -EINVAL;
@@ -3940,6 +4054,7 @@ struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
nesibdev->ibdev.bind_mw = nes_bind_mw;
nesibdev->ibdev.alloc_mr = nes_alloc_mr;
+ nesibdev->ibdev.map_mr_sg = nes_map_mr_sg;
nesibdev->ibdev.alloc_fast_reg_page_list = nes_alloc_fast_reg_page_list;
nesibdev->ibdev.free_fast_reg_page_list = nes_free_fast_reg_page_list;
diff --git a/drivers/infiniband/hw/nes/nes_verbs.h b/drivers/infiniband/hw/nes/nes_verbs.h
index 309b31c31ae1..a204b677af22 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.h
+++ b/drivers/infiniband/hw/nes/nes_verbs.h
@@ -79,6 +79,10 @@ struct nes_mr {
u16 pbls_used;
u8 mode;
u8 pbl_4k;
+ __le64 *pages;
+ dma_addr_t paddr;
+ u32 max_pages;
+ u32 npages;
};
struct nes_hw_pb {
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 10/26] IB/iser: Port to new fast registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (8 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 09/26] RDMA/nes: " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 11/26] iser-target: Port to new memory " Sagi Grimberg
` (16 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Remove fastreg page list allocation as the page vector
is now private to the provider. Instead of constructing
the page list and fast_req work request, call ib_map_mr_sg
and construct ib_reg_wr.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/ulp/iser/iscsi_iser.h | 10 ++----
drivers/infiniband/ulp/iser/iser_memory.c | 54 ++++++++++++++-----------------
drivers/infiniband/ulp/iser/iser_verbs.c | 16 +--------
3 files changed, 28 insertions(+), 52 deletions(-)
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h
index 2484bee993ec..8a5998e6a407 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.h
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.h
@@ -230,7 +230,7 @@ enum iser_data_dir {
*/
struct iser_data_buf {
struct scatterlist *sg;
- unsigned int size;
+ int size;
unsigned long data_len;
unsigned int dma_nents;
};
@@ -297,7 +297,7 @@ struct iser_tx_desc {
u8 wr_idx;
union iser_wr {
struct ib_send_wr send;
- struct ib_fast_reg_wr fast_reg;
+ struct ib_reg_wr fast_reg;
struct ib_sig_handover_wr sig;
} wrs[ISER_MAX_WRS];
struct iser_mem_reg data_reg;
@@ -412,7 +412,6 @@ struct iser_device {
*
* @mr: memory region
* @fmr_pool: pool of fmrs
- * @frpl: fast reg page list used by frwrs
* @page_vec: fast reg page list used by fmr pool
* @mr_valid: is mr valid indicator
*/
@@ -421,10 +420,7 @@ struct iser_reg_resources {
struct ib_mr *mr;
struct ib_fmr_pool *fmr_pool;
};
- union {
- struct ib_fast_reg_page_list *frpl;
- struct iser_page_vec *page_vec;
- };
+ struct iser_page_vec *page_vec;
u8 mr_valid:1;
};
diff --git a/drivers/infiniband/ulp/iser/iser_memory.c b/drivers/infiniband/ulp/iser/iser_memory.c
index b29fda3e8e74..ea765fb9664d 100644
--- a/drivers/infiniband/ulp/iser/iser_memory.c
+++ b/drivers/infiniband/ulp/iser/iser_memory.c
@@ -472,7 +472,7 @@ iser_reg_sig_mr(struct iscsi_iser_task *iser_task,
sig_reg->sge.addr = 0;
sig_reg->sge.length = scsi_transfer_length(iser_task->sc);
- iser_dbg("sig reg: lkey: 0x%x, rkey: 0x%x, addr: 0x%llx, length: %u\n",
+ iser_dbg("lkey=0x%x rkey=0x%x addr=0x%llx length=%u\n",
sig_reg->sge.lkey, sig_reg->rkey, sig_reg->sge.addr,
sig_reg->sge.length);
err:
@@ -484,47 +484,41 @@ static int iser_fast_reg_mr(struct iscsi_iser_task *iser_task,
struct iser_reg_resources *rsc,
struct iser_mem_reg *reg)
{
- struct ib_conn *ib_conn = &iser_task->iser_conn->ib_conn;
- struct iser_device *device = ib_conn->device;
- struct ib_mr *mr = rsc->mr;
- struct ib_fast_reg_page_list *frpl = rsc->frpl;
struct iser_tx_desc *tx_desc = &iser_task->desc;
- struct ib_fast_reg_wr *wr;
- int offset, size, plen;
-
- plen = iser_sg_to_page_vec(mem, device->ib_device, frpl->page_list,
- &offset, &size);
- if (plen * SIZE_4K < size) {
- iser_err("fast reg page_list too short to hold this SG\n");
- return -EINVAL;
- }
+ struct ib_mr *mr = rsc->mr;
+ struct ib_reg_wr *wr;
+ int n;
if (!rsc->mr_valid)
iser_inv_rkey(iser_tx_next_wr(tx_desc), mr);
- wr = fast_reg_wr(iser_tx_next_wr(tx_desc));
- wr->wr.opcode = IB_WR_FAST_REG_MR;
+ n = ib_map_mr_sg(mr, mem->sg, mem->size, SIZE_4K);
+ if (unlikely(n != mem->size)) {
+ iser_err("failed to map sg (%d/%d)\n",
+ n, mem->size);
+ return n < 0 ? n : -EINVAL;
+ }
+
+ wr = reg_wr(iser_tx_next_wr(tx_desc));
+ wr->wr.opcode = IB_WR_REG_MR;
wr->wr.wr_id = ISER_FASTREG_LI_WRID;
wr->wr.send_flags = 0;
- wr->iova_start = frpl->page_list[0] + offset;
- wr->page_list = frpl;
- wr->page_list_len = plen;
- wr->page_shift = SHIFT_4K;
- wr->length = size;
- wr->rkey = mr->rkey;
- wr->access_flags = (IB_ACCESS_LOCAL_WRITE |
- IB_ACCESS_REMOTE_WRITE |
- IB_ACCESS_REMOTE_READ);
+ wr->wr.num_sge = 0;
+ wr->mr = mr;
+ wr->key = mr->rkey;
+ wr->access = IB_ACCESS_LOCAL_WRITE |
+ IB_ACCESS_REMOTE_WRITE |
+ IB_ACCESS_REMOTE_READ;
+
rsc->mr_valid = 0;
reg->sge.lkey = mr->lkey;
reg->rkey = mr->rkey;
- reg->sge.addr = frpl->page_list[0] + offset;
- reg->sge.length = size;
+ reg->sge.addr = mr->iova;
+ reg->sge.length = mr->length;
- iser_dbg("fast reg: lkey=0x%x, rkey=0x%x, addr=0x%llx,"
- " length=0x%x\n", reg->sge.lkey, reg->rkey,
- reg->sge.addr, reg->sge.length);
+ iser_dbg("lkey=0x%x rkey=0x%x addr=0x%llx length=0x%x\n",
+ reg->sge.lkey, reg->rkey, reg->sge.addr, reg->sge.length);
return 0;
}
diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c
index b26022e30af1..a66b9dea96d8 100644
--- a/drivers/infiniband/ulp/iser/iser_verbs.c
+++ b/drivers/infiniband/ulp/iser/iser_verbs.c
@@ -293,35 +293,21 @@ iser_alloc_reg_res(struct ib_device *ib_device,
{
int ret;
- res->frpl = ib_alloc_fast_reg_page_list(ib_device, size);
- if (IS_ERR(res->frpl)) {
- ret = PTR_ERR(res->frpl);
- iser_err("Failed to allocate ib_fast_reg_page_list err=%d\n",
- ret);
- return PTR_ERR(res->frpl);
- }
-
res->mr = ib_alloc_mr(pd, IB_MR_TYPE_MEM_REG, size);
if (IS_ERR(res->mr)) {
ret = PTR_ERR(res->mr);
iser_err("Failed to allocate ib_fast_reg_mr err=%d\n", ret);
- goto fast_reg_mr_failure;
+ return ret;
}
res->mr_valid = 1;
return 0;
-
-fast_reg_mr_failure:
- ib_free_fast_reg_page_list(res->frpl);
-
- return ret;
}
static void
iser_free_reg_res(struct iser_reg_resources *rsc)
{
ib_dereg_mr(rsc->mr);
- ib_free_fast_reg_page_list(rsc->frpl);
}
static int
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 11/26] iser-target: Port to new memory registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (9 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 10/26] IB/iser: Port to new fast " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 12/26] xprtrdma: " Sagi Grimberg
` (15 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Remove fastreg page list allocation as the page vector
is now private to the provider. Instead of constructing
the page list and fast_req work request, call ib_map_mr_sg
and construct ib_reg_wr.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/ulp/isert/ib_isert.c | 130 +++++++-------------------------
drivers/infiniband/ulp/isert/ib_isert.h | 2 -
2 files changed, 28 insertions(+), 104 deletions(-)
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index 70d55d381515..7dbae56e576a 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -473,10 +473,8 @@ isert_conn_free_fastreg_pool(struct isert_conn *isert_conn)
list_for_each_entry_safe(fr_desc, tmp,
&isert_conn->fr_pool, list) {
list_del(&fr_desc->list);
- ib_free_fast_reg_page_list(fr_desc->data_frpl);
ib_dereg_mr(fr_desc->data_mr);
if (fr_desc->pi_ctx) {
- ib_free_fast_reg_page_list(fr_desc->pi_ctx->prot_frpl);
ib_dereg_mr(fr_desc->pi_ctx->prot_mr);
ib_dereg_mr(fr_desc->pi_ctx->sig_mr);
kfree(fr_desc->pi_ctx);
@@ -504,22 +502,13 @@ isert_create_pi_ctx(struct fast_reg_descriptor *desc,
return -ENOMEM;
}
- pi_ctx->prot_frpl = ib_alloc_fast_reg_page_list(device,
- ISCSI_ISER_SG_TABLESIZE);
- if (IS_ERR(pi_ctx->prot_frpl)) {
- isert_err("Failed to allocate prot frpl err=%ld\n",
- PTR_ERR(pi_ctx->prot_frpl));
- ret = PTR_ERR(pi_ctx->prot_frpl);
- goto err_pi_ctx;
- }
-
pi_ctx->prot_mr = ib_alloc_mr(pd, IB_MR_TYPE_MEM_REG,
ISCSI_ISER_SG_TABLESIZE);
if (IS_ERR(pi_ctx->prot_mr)) {
isert_err("Failed to allocate prot frmr err=%ld\n",
PTR_ERR(pi_ctx->prot_mr));
ret = PTR_ERR(pi_ctx->prot_mr);
- goto err_prot_frpl;
+ goto err_pi_ctx;
}
desc->ind |= ISERT_PROT_KEY_VALID;
@@ -539,8 +528,6 @@ isert_create_pi_ctx(struct fast_reg_descriptor *desc,
err_prot_mr:
ib_dereg_mr(pi_ctx->prot_mr);
-err_prot_frpl:
- ib_free_fast_reg_page_list(pi_ctx->prot_frpl);
err_pi_ctx:
kfree(pi_ctx);
@@ -551,34 +538,18 @@ static int
isert_create_fr_desc(struct ib_device *ib_device, struct ib_pd *pd,
struct fast_reg_descriptor *fr_desc)
{
- int ret;
-
- fr_desc->data_frpl = ib_alloc_fast_reg_page_list(ib_device,
- ISCSI_ISER_SG_TABLESIZE);
- if (IS_ERR(fr_desc->data_frpl)) {
- isert_err("Failed to allocate data frpl err=%ld\n",
- PTR_ERR(fr_desc->data_frpl));
- return PTR_ERR(fr_desc->data_frpl);
- }
-
fr_desc->data_mr = ib_alloc_mr(pd, IB_MR_TYPE_MEM_REG,
ISCSI_ISER_SG_TABLESIZE);
if (IS_ERR(fr_desc->data_mr)) {
isert_err("Failed to allocate data frmr err=%ld\n",
PTR_ERR(fr_desc->data_mr));
- ret = PTR_ERR(fr_desc->data_mr);
- goto err_data_frpl;
+ return PTR_ERR(fr_desc->data_mr);
}
fr_desc->ind |= ISERT_DATA_KEY_VALID;
isert_dbg("Created fr_desc %p\n", fr_desc);
return 0;
-
-err_data_frpl:
- ib_free_fast_reg_page_list(fr_desc->data_frpl);
-
- return ret;
}
static int
@@ -2535,45 +2506,6 @@ unmap_cmd:
return ret;
}
-static int
-isert_map_fr_pagelist(struct ib_device *ib_dev,
- struct scatterlist *sg_start, int sg_nents, u64 *fr_pl)
-{
- u64 start_addr, end_addr, page, chunk_start = 0;
- struct scatterlist *tmp_sg;
- int i = 0, new_chunk, last_ent, n_pages;
-
- n_pages = 0;
- new_chunk = 1;
- last_ent = sg_nents - 1;
- for_each_sg(sg_start, tmp_sg, sg_nents, i) {
- start_addr = ib_sg_dma_address(ib_dev, tmp_sg);
- if (new_chunk)
- chunk_start = start_addr;
- end_addr = start_addr + ib_sg_dma_len(ib_dev, tmp_sg);
-
- isert_dbg("SGL[%d] dma_addr: 0x%llx len: %u\n",
- i, (unsigned long long)tmp_sg->dma_address,
- tmp_sg->length);
-
- if ((end_addr & ~PAGE_MASK) && i < last_ent) {
- new_chunk = 0;
- continue;
- }
- new_chunk = 1;
-
- page = chunk_start & PAGE_MASK;
- do {
- fr_pl[n_pages++] = page;
- isert_dbg("Mapped page_list[%d] page_addr: 0x%llx\n",
- n_pages - 1, page);
- page += PAGE_SIZE;
- } while (page < end_addr);
- }
-
- return n_pages;
-}
-
static inline void
isert_inv_rkey(struct ib_send_wr *inv_wr, struct ib_mr *mr)
{
@@ -2599,11 +2531,9 @@ isert_fast_reg_mr(struct isert_conn *isert_conn,
struct isert_device *device = isert_conn->device;
struct ib_device *ib_dev = device->ib_device;
struct ib_mr *mr;
- struct ib_fast_reg_page_list *frpl;
- struct ib_fast_reg_wr fr_wr;
+ struct ib_reg_wr reg_wr;
struct ib_send_wr inv_wr, *bad_wr, *wr = NULL;
- int ret, pagelist_len;
- u32 page_off;
+ int ret, n;
if (mem->dma_nents == 1) {
sge->lkey = device->pd->local_dma_lkey;
@@ -2614,45 +2544,41 @@ isert_fast_reg_mr(struct isert_conn *isert_conn,
return 0;
}
- if (ind == ISERT_DATA_KEY_VALID) {
+ if (ind == ISERT_DATA_KEY_VALID)
/* Registering data buffer */
mr = fr_desc->data_mr;
- frpl = fr_desc->data_frpl;
- } else {
+ else
/* Registering protection buffer */
mr = fr_desc->pi_ctx->prot_mr;
- frpl = fr_desc->pi_ctx->prot_frpl;
- }
-
- page_off = mem->offset % PAGE_SIZE;
-
- isert_dbg("Use fr_desc %p sg_nents %d offset %u\n",
- fr_desc, mem->nents, mem->offset);
-
- pagelist_len = isert_map_fr_pagelist(ib_dev, mem->sg, mem->nents,
- &frpl->page_list[0]);
if (!(fr_desc->ind & ind)) {
isert_inv_rkey(&inv_wr, mr);
wr = &inv_wr;
}
- /* Prepare FASTREG WR */
- memset(&fr_wr, 0, sizeof(fr_wr));
- fr_wr.wr.wr_id = ISER_FASTREG_LI_WRID;
- fr_wr.wr.opcode = IB_WR_FAST_REG_MR;
- fr_wr.iova_start = frpl->page_list[0] + page_off;
- fr_wr.page_list = frpl;
- fr_wr.page_list_len = pagelist_len;
- fr_wr.page_shift = PAGE_SHIFT;
- fr_wr.length = mem->len;
- fr_wr.rkey = mr->rkey;
- fr_wr.access_flags = IB_ACCESS_LOCAL_WRITE;
+ n = ib_map_mr_sg(mr, mem->sg, mem->nents, PAGE_SIZE);
+ if (unlikely(n != mem->nents)) {
+ isert_err("failed to map mr sg (%d/%d)\n",
+ n, mem->nents);
+ return n < 0 ? n : -EINVAL;
+ }
+
+ isert_dbg("Use fr_desc %p sg_nents %d offset %u\n",
+ fr_desc, mem->nents, mem->offset);
+
+ reg_wr.wr.next = NULL;
+ reg_wr.wr.opcode = IB_WR_REG_MR;
+ reg_wr.wr.wr_id = ISER_FASTREG_LI_WRID;
+ reg_wr.wr.send_flags = 0;
+ reg_wr.wr.num_sge = 0;
+ reg_wr.mr = mr;
+ reg_wr.key = mr->lkey;
+ reg_wr.access = IB_ACCESS_LOCAL_WRITE;
if (!wr)
- wr = &fr_wr.wr;
+ wr = ®_wr.wr;
else
- wr->next = &fr_wr.wr;
+ wr->next = ®_wr.wr;
ret = ib_post_send(isert_conn->qp, wr, &bad_wr);
if (ret) {
@@ -2662,8 +2588,8 @@ isert_fast_reg_mr(struct isert_conn *isert_conn,
fr_desc->ind &= ~ind;
sge->lkey = mr->lkey;
- sge->addr = frpl->page_list[0] + page_off;
- sge->length = mem->len;
+ sge->addr = mr->iova;
+ sge->length = mr->length;
isert_dbg("sge: addr: 0x%llx length: %u lkey: %x\n",
sge->addr, sge->length, sge->lkey);
diff --git a/drivers/infiniband/ulp/isert/ib_isert.h b/drivers/infiniband/ulp/isert/ib_isert.h
index 360461819452..3d7fbc47c343 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.h
+++ b/drivers/infiniband/ulp/isert/ib_isert.h
@@ -84,14 +84,12 @@ enum isert_indicator {
struct pi_context {
struct ib_mr *prot_mr;
- struct ib_fast_reg_page_list *prot_frpl;
struct ib_mr *sig_mr;
};
struct fast_reg_descriptor {
struct list_head list;
struct ib_mr *data_mr;
- struct ib_fast_reg_page_list *data_frpl;
u8 ind;
struct pi_context *pi_ctx;
};
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 12/26] xprtrdma: Port to new memory registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (10 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 11/26] iser-target: Port to new memory " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
[not found] ` <1444752709-15429-13-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-10-13 16:11 ` [PATCH v5 13/26] svcrdma: " Sagi Grimberg
` (14 subsequent siblings)
26 siblings, 1 reply; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Instead of maintaining a fastreg page list, keep an sg table
and convert an array of pages to a sg list. Then call ib_map_mr_sg
and construct ib_reg_wr.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Tested-by: Steve Wise <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
Tested-by: Selvin Xavier <selvin.xavier-1wcpHE2jlwO1Z/+hSey0Gg@public.gmane.org>
---
net/sunrpc/xprtrdma/frwr_ops.c | 118 +++++++++++++++++++++++-----------------
net/sunrpc/xprtrdma/xprt_rdma.h | 3 +-
2 files changed, 69 insertions(+), 52 deletions(-)
diff --git a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c
index 0d2f46f600b6..a1434447b0d6 100644
--- a/net/sunrpc/xprtrdma/frwr_ops.c
+++ b/net/sunrpc/xprtrdma/frwr_ops.c
@@ -151,9 +151,13 @@ __frwr_init(struct rpcrdma_mw *r, struct ib_pd *pd, struct ib_device *device,
f->fr_mr = ib_alloc_mr(pd, IB_MR_TYPE_MEM_REG, depth);
if (IS_ERR(f->fr_mr))
goto out_mr_err;
- f->fr_pgl = ib_alloc_fast_reg_page_list(device, depth);
- if (IS_ERR(f->fr_pgl))
+
+ f->sg = kcalloc(depth, sizeof(*f->sg), GFP_KERNEL);
+ if (!f->sg)
goto out_list_err;
+
+ sg_init_table(f->sg, depth);
+
return 0;
out_mr_err:
@@ -163,9 +167,9 @@ out_mr_err:
return rc;
out_list_err:
- rc = PTR_ERR(f->fr_pgl);
- dprintk("RPC: %s: ib_alloc_fast_reg_page_list status %i\n",
- __func__, rc);
+ rc = -ENOMEM;
+ dprintk("RPC: %s: sg allocation failure\n",
+ __func__);
ib_dereg_mr(f->fr_mr);
return rc;
}
@@ -179,7 +183,7 @@ __frwr_release(struct rpcrdma_mw *r)
if (rc)
dprintk("RPC: %s: ib_dereg_mr status %i\n",
__func__, rc);
- ib_free_fast_reg_page_list(r->r.frmr.fr_pgl);
+ kfree(r->r.frmr.sg);
}
static int
@@ -312,14 +316,10 @@ frwr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg,
struct rpcrdma_mw *mw;
struct rpcrdma_frmr *frmr;
struct ib_mr *mr;
- struct ib_fast_reg_wr fastreg_wr;
+ struct ib_reg_wr reg_wr;
struct ib_send_wr *bad_wr;
+ int rc, i, n, dma_nents;
u8 key;
- int len, pageoff;
- int i, rc;
- int seg_len;
- u64 pa;
- int page_no;
mw = seg1->rl_mw;
seg1->rl_mw = NULL;
@@ -332,64 +332,80 @@ frwr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg,
} while (mw->r.frmr.fr_state != FRMR_IS_INVALID);
frmr = &mw->r.frmr;
frmr->fr_state = FRMR_IS_VALID;
+ mr = frmr->fr_mr;
- pageoff = offset_in_page(seg1->mr_offset);
- seg1->mr_offset -= pageoff; /* start of page */
- seg1->mr_len += pageoff;
- len = -pageoff;
if (nsegs > ia->ri_max_frmr_depth)
nsegs = ia->ri_max_frmr_depth;
- for (page_no = i = 0; i < nsegs;) {
- rpcrdma_map_one(device, seg, direction);
- pa = seg->mr_dma;
- for (seg_len = seg->mr_len; seg_len > 0; seg_len -= PAGE_SIZE) {
- frmr->fr_pgl->page_list[page_no++] = pa;
- pa += PAGE_SIZE;
- }
- len += seg->mr_len;
+ for (i = 0; i < nsegs;) {
+ if (seg->mr_page)
+ sg_set_page(&frmr->sg[i],
+ seg->mr_page,
+ seg->mr_len,
+ offset_in_page(seg->mr_offset));
+ else
+ sg_set_buf(&frmr->sg[i], seg->mr_offset,
+ seg->mr_len);
+
++seg;
++i;
+
/* Check for holes */
if ((i < nsegs && offset_in_page(seg->mr_offset)) ||
offset_in_page((seg-1)->mr_offset + (seg-1)->mr_len))
break;
}
- dprintk("RPC: %s: Using frmr %p to map %d segments (%d bytes)\n",
- __func__, mw, i, len);
-
- memset(&fastreg_wr, 0, sizeof(fastreg_wr));
- fastreg_wr.wr.wr_id = (unsigned long)(void *)mw;
- fastreg_wr.wr.opcode = IB_WR_FAST_REG_MR;
- fastreg_wr.iova_start = seg1->mr_dma + pageoff;
- fastreg_wr.page_list = frmr->fr_pgl;
- fastreg_wr.page_shift = PAGE_SHIFT;
- fastreg_wr.page_list_len = page_no;
- fastreg_wr.length = len;
- fastreg_wr.access_flags = writing ?
- IB_ACCESS_REMOTE_WRITE | IB_ACCESS_LOCAL_WRITE :
- IB_ACCESS_REMOTE_READ;
- mr = frmr->fr_mr;
+ frmr->sg_nents = i;
+
+ dma_nents = ib_dma_map_sg(device, frmr->sg, frmr->sg_nents, direction);
+ if (!dma_nents) {
+ pr_err("RPC: %s: failed to dma map sg %p sg_nents %u\n",
+ __func__, frmr->sg, frmr->sg_nents);
+ return -ENOMEM;
+ }
+
+ n = ib_map_mr_sg(mr, frmr->sg, frmr->sg_nents, PAGE_SIZE);
+ if (unlikely(n != frmr->sg_nents)) {
+ pr_err("RPC: %s: failed to map mr %p (%u/%u)\n",
+ __func__, frmr->fr_mr, n, frmr->sg_nents);
+ rc = n < 0 ? n : -EINVAL;
+ goto out_senderr;
+ }
+
+ dprintk("RPC: %s: Using frmr %p to map %u segments (%u bytes)\n",
+ __func__, mw, frmr->sg_nents, mr->length);
+
key = (u8)(mr->rkey & 0x000000FF);
ib_update_fast_reg_key(mr, ++key);
- fastreg_wr.rkey = mr->rkey;
+
+ reg_wr.wr.next = NULL;
+ reg_wr.wr.opcode = IB_WR_REG_MR;
+ reg_wr.wr.wr_id = (uintptr_t)mw;
+ reg_wr.wr.num_sge = 0;
+ reg_wr.wr.send_flags = 0;
+ reg_wr.mr = mr;
+ reg_wr.key = mr->rkey;
+ reg_wr.access = writing ?
+ IB_ACCESS_REMOTE_WRITE | IB_ACCESS_LOCAL_WRITE :
+ IB_ACCESS_REMOTE_READ;
DECR_CQCOUNT(&r_xprt->rx_ep);
- rc = ib_post_send(ia->ri_id->qp, &fastreg_wr.wr, &bad_wr);
+ rc = ib_post_send(ia->ri_id->qp, ®_wr.wr, &bad_wr);
if (rc)
goto out_senderr;
+ seg1->mr_dir = direction;
seg1->rl_mw = mw;
seg1->mr_rkey = mr->rkey;
- seg1->mr_base = seg1->mr_dma + pageoff;
- seg1->mr_nsegs = i;
- seg1->mr_len = len;
- return i;
+ seg1->mr_base = mr->iova;
+ seg1->mr_nsegs = frmr->sg_nents;
+ seg1->mr_len = mr->length;
+
+ return frmr->sg_nents;
out_senderr:
dprintk("RPC: %s: ib_post_send status %i\n", __func__, rc);
- while (i--)
- rpcrdma_unmap_one(device, --seg);
+ ib_dma_unmap_sg(device, frmr->sg, dma_nents, direction);
__frwr_queue_recovery(mw);
return rc;
}
@@ -403,22 +419,22 @@ frwr_op_unmap(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg)
struct rpcrdma_mr_seg *seg1 = seg;
struct rpcrdma_ia *ia = &r_xprt->rx_ia;
struct rpcrdma_mw *mw = seg1->rl_mw;
+ struct rpcrdma_frmr *frmr = &mw->r.frmr;
struct ib_send_wr invalidate_wr, *bad_wr;
int rc, nsegs = seg->mr_nsegs;
dprintk("RPC: %s: FRMR %p\n", __func__, mw);
seg1->rl_mw = NULL;
- mw->r.frmr.fr_state = FRMR_IS_INVALID;
+ frmr->fr_state = FRMR_IS_INVALID;
memset(&invalidate_wr, 0, sizeof(invalidate_wr));
invalidate_wr.wr_id = (unsigned long)(void *)mw;
invalidate_wr.opcode = IB_WR_LOCAL_INV;
- invalidate_wr.ex.invalidate_rkey = mw->r.frmr.fr_mr->rkey;
+ invalidate_wr.ex.invalidate_rkey = frmr->fr_mr->rkey;
DECR_CQCOUNT(&r_xprt->rx_ep);
- while (seg1->mr_nsegs--)
- rpcrdma_unmap_one(ia->ri_device, seg++);
+ ib_dma_unmap_sg(ia->ri_device, frmr->sg, frmr->sg_nents, seg1->mr_dir);
read_lock(&ia->ri_qplock);
rc = ib_post_send(ia->ri_id->qp, &invalidate_wr, &bad_wr);
read_unlock(&ia->ri_qplock);
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index c09414e6f91b..c82abf44e39d 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -193,7 +193,8 @@ enum rpcrdma_frmr_state {
};
struct rpcrdma_frmr {
- struct ib_fast_reg_page_list *fr_pgl;
+ struct scatterlist *sg;
+ int sg_nents;
struct ib_mr *fr_mr;
enum rpcrdma_frmr_state fr_state;
struct work_struct fr_work;
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 13/26] svcrdma: Port to new memory registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (11 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 12/26] xprtrdma: " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 14/26] RDS/IW: Convert " Sagi Grimberg
` (13 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Instead of maintaining a fastreg page list, keep an sg table
and convert an array of pages to a sg list. Then call ib_map_mr_sg
and construct ib_reg_wr.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Tested-by: Steve Wise <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
Tested-by: Selvin Xavier <selvin.xavier-1wcpHE2jlwO1Z/+hSey0Gg@public.gmane.org>
---
include/linux/sunrpc/svc_rdma.h | 6 +--
net/sunrpc/xprtrdma/svc_rdma_recvfrom.c | 76 ++++++++++++++++++--------------
net/sunrpc/xprtrdma/svc_rdma_transport.c | 34 +++++---------
3 files changed, 55 insertions(+), 61 deletions(-)
diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h
index 7ccc961f33e9..1e4438ea2380 100644
--- a/include/linux/sunrpc/svc_rdma.h
+++ b/include/linux/sunrpc/svc_rdma.h
@@ -105,11 +105,9 @@ struct svc_rdma_chunk_sge {
};
struct svc_rdma_fastreg_mr {
struct ib_mr *mr;
- void *kva;
- struct ib_fast_reg_page_list *page_list;
- int page_list_len;
+ struct scatterlist *sg;
+ int sg_nents;
unsigned long access_flags;
- unsigned long map_len;
enum dma_data_direction direction;
struct list_head frmr_list;
};
diff --git a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
index 7be42d0da19e..cb0991345816 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
@@ -220,12 +220,12 @@ int rdma_read_chunk_frmr(struct svcxprt_rdma *xprt,
{
struct ib_rdma_wr read_wr;
struct ib_send_wr inv_wr;
- struct ib_fast_reg_wr fastreg_wr;
+ struct ib_reg_wr reg_wr;
u8 key;
- int pages_needed = PAGE_ALIGN(*page_offset + rs_length) >> PAGE_SHIFT;
+ int nents = PAGE_ALIGN(*page_offset + rs_length) >> PAGE_SHIFT;
struct svc_rdma_op_ctxt *ctxt = svc_rdma_get_context(xprt);
struct svc_rdma_fastreg_mr *frmr = svc_rdma_get_frmr(xprt);
- int ret, read, pno;
+ int ret, read, pno, dma_nents, n;
u32 pg_off = *page_offset;
u32 pg_no = *page_no;
@@ -234,16 +234,14 @@ int rdma_read_chunk_frmr(struct svcxprt_rdma *xprt,
ctxt->direction = DMA_FROM_DEVICE;
ctxt->frmr = frmr;
- pages_needed = min_t(int, pages_needed, xprt->sc_frmr_pg_list_len);
- read = min_t(int, pages_needed << PAGE_SHIFT, rs_length);
+ nents = min_t(unsigned int, nents, xprt->sc_frmr_pg_list_len);
+ read = min_t(int, nents << PAGE_SHIFT, rs_length);
- frmr->kva = page_address(rqstp->rq_arg.pages[pg_no]);
frmr->direction = DMA_FROM_DEVICE;
frmr->access_flags = (IB_ACCESS_LOCAL_WRITE|IB_ACCESS_REMOTE_WRITE);
- frmr->map_len = pages_needed << PAGE_SHIFT;
- frmr->page_list_len = pages_needed;
+ frmr->sg_nents = nents;
- for (pno = 0; pno < pages_needed; pno++) {
+ for (pno = 0; pno < nents; pno++) {
int len = min_t(int, rs_length, PAGE_SIZE - pg_off);
head->arg.pages[pg_no] = rqstp->rq_arg.pages[pg_no];
@@ -251,17 +249,12 @@ int rdma_read_chunk_frmr(struct svcxprt_rdma *xprt,
head->arg.len += len;
if (!pg_off)
head->count++;
+
+ sg_set_page(&frmr->sg[pno], rqstp->rq_arg.pages[pg_no],
+ len, pg_off);
+
rqstp->rq_respages = &rqstp->rq_arg.pages[pg_no+1];
rqstp->rq_next_page = rqstp->rq_respages + 1;
- frmr->page_list->page_list[pno] =
- ib_dma_map_page(xprt->sc_cm_id->device,
- head->arg.pages[pg_no], 0,
- PAGE_SIZE, DMA_FROM_DEVICE);
- ret = ib_dma_mapping_error(xprt->sc_cm_id->device,
- frmr->page_list->page_list[pno]);
- if (ret)
- goto err;
- atomic_inc(&xprt->sc_dma_used);
/* adjust offset and wrap to next page if needed */
pg_off += len;
@@ -277,28 +270,42 @@ int rdma_read_chunk_frmr(struct svcxprt_rdma *xprt,
else
clear_bit(RDMACTXT_F_LAST_CTXT, &ctxt->flags);
+ dma_nents = ib_dma_map_sg(xprt->sc_cm_id->device,
+ frmr->sg, frmr->sg_nents,
+ frmr->direction);
+ if (!dma_nents) {
+ pr_err("svcrdma: failed to dma map sg %p\n",
+ frmr->sg);
+ return -ENOMEM;
+ }
+ atomic_inc(&xprt->sc_dma_used);
+
+ n = ib_map_mr_sg(frmr->mr, frmr->sg, frmr->sg_nents, PAGE_SIZE);
+ if (unlikely(n != frmr->sg_nents)) {
+ pr_err("svcrdma: failed to map mr %p (%d/%d elements)\n",
+ frmr->mr, n, frmr->sg_nents);
+ return n < 0 ? n : -EINVAL;
+ }
+
/* Bump the key */
key = (u8)(frmr->mr->lkey & 0x000000FF);
ib_update_fast_reg_key(frmr->mr, ++key);
- ctxt->sge[0].addr = (unsigned long)frmr->kva + *page_offset;
+ ctxt->sge[0].addr = frmr->mr->iova;
ctxt->sge[0].lkey = frmr->mr->lkey;
- ctxt->sge[0].length = read;
+ ctxt->sge[0].length = frmr->mr->length;
ctxt->count = 1;
ctxt->read_hdr = head;
- /* Prepare FASTREG WR */
- memset(&fastreg_wr, 0, sizeof(fastreg_wr));
- fastreg_wr.wr.opcode = IB_WR_FAST_REG_MR;
- fastreg_wr.wr.send_flags = IB_SEND_SIGNALED;
- fastreg_wr.iova_start = (unsigned long)frmr->kva;
- fastreg_wr.page_list = frmr->page_list;
- fastreg_wr.page_list_len = frmr->page_list_len;
- fastreg_wr.page_shift = PAGE_SHIFT;
- fastreg_wr.length = frmr->map_len;
- fastreg_wr.access_flags = frmr->access_flags;
- fastreg_wr.rkey = frmr->mr->lkey;
- fastreg_wr.wr.next = &read_wr.wr;
+ /* Prepare REG WR */
+ reg_wr.wr.opcode = IB_WR_REG_MR;
+ reg_wr.wr.wr_id = 0;
+ reg_wr.wr.send_flags = IB_SEND_SIGNALED;
+ reg_wr.wr.num_sge = 0;
+ reg_wr.mr = frmr->mr;
+ reg_wr.key = frmr->mr->lkey;
+ reg_wr.access = frmr->access_flags;
+ reg_wr.wr.next = &read_wr.wr;
/* Prepare RDMA_READ */
memset(&read_wr, 0, sizeof(read_wr));
@@ -324,7 +331,7 @@ int rdma_read_chunk_frmr(struct svcxprt_rdma *xprt,
ctxt->wr_op = read_wr.wr.opcode;
/* Post the chain */
- ret = svc_rdma_send(xprt, &fastreg_wr.wr);
+ ret = svc_rdma_send(xprt, ®_wr.wr);
if (ret) {
pr_err("svcrdma: Error %d posting RDMA_READ\n", ret);
set_bit(XPT_CLOSE, &xprt->sc_xprt.xpt_flags);
@@ -338,7 +345,8 @@ int rdma_read_chunk_frmr(struct svcxprt_rdma *xprt,
atomic_inc(&rdma_stat_read);
return ret;
err:
- svc_rdma_unmap_dma(ctxt);
+ ib_dma_unmap_sg(xprt->sc_cm_id->device,
+ frmr->sg, frmr->sg_nents, frmr->direction);
svc_rdma_put_context(ctxt, 0);
svc_rdma_put_frmr(xprt, frmr);
return ret;
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index fcc3eb80c265..6ee928fc06cb 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -732,7 +732,7 @@ static struct svc_xprt *svc_rdma_create(struct svc_serv *serv,
static struct svc_rdma_fastreg_mr *rdma_alloc_frmr(struct svcxprt_rdma *xprt)
{
struct ib_mr *mr;
- struct ib_fast_reg_page_list *pl;
+ struct scatterlist *sg;
struct svc_rdma_fastreg_mr *frmr;
u32 num_sg;
@@ -745,13 +745,14 @@ static struct svc_rdma_fastreg_mr *rdma_alloc_frmr(struct svcxprt_rdma *xprt)
if (IS_ERR(mr))
goto err_free_frmr;
- pl = ib_alloc_fast_reg_page_list(xprt->sc_cm_id->device,
- num_sg);
- if (IS_ERR(pl))
+ sg = kcalloc(RPCSVC_MAXPAGES, sizeof(*sg), GFP_KERNEL);
+ if (!sg)
goto err_free_mr;
+ sg_init_table(sg, RPCSVC_MAXPAGES);
+
frmr->mr = mr;
- frmr->page_list = pl;
+ frmr->sg = sg;
INIT_LIST_HEAD(&frmr->frmr_list);
return frmr;
@@ -771,8 +772,8 @@ static void rdma_dealloc_frmr_q(struct svcxprt_rdma *xprt)
frmr = list_entry(xprt->sc_frmr_q.next,
struct svc_rdma_fastreg_mr, frmr_list);
list_del_init(&frmr->frmr_list);
+ kfree(frmr->sg);
ib_dereg_mr(frmr->mr);
- ib_free_fast_reg_page_list(frmr->page_list);
kfree(frmr);
}
}
@@ -786,8 +787,7 @@ struct svc_rdma_fastreg_mr *svc_rdma_get_frmr(struct svcxprt_rdma *rdma)
frmr = list_entry(rdma->sc_frmr_q.next,
struct svc_rdma_fastreg_mr, frmr_list);
list_del_init(&frmr->frmr_list);
- frmr->map_len = 0;
- frmr->page_list_len = 0;
+ frmr->sg_nents = 0;
}
spin_unlock_bh(&rdma->sc_frmr_q_lock);
if (frmr)
@@ -796,25 +796,13 @@ struct svc_rdma_fastreg_mr *svc_rdma_get_frmr(struct svcxprt_rdma *rdma)
return rdma_alloc_frmr(rdma);
}
-static void frmr_unmap_dma(struct svcxprt_rdma *xprt,
- struct svc_rdma_fastreg_mr *frmr)
-{
- int page_no;
- for (page_no = 0; page_no < frmr->page_list_len; page_no++) {
- dma_addr_t addr = frmr->page_list->page_list[page_no];
- if (ib_dma_mapping_error(frmr->mr->device, addr))
- continue;
- atomic_dec(&xprt->sc_dma_used);
- ib_dma_unmap_page(frmr->mr->device, addr, PAGE_SIZE,
- frmr->direction);
- }
-}
-
void svc_rdma_put_frmr(struct svcxprt_rdma *rdma,
struct svc_rdma_fastreg_mr *frmr)
{
if (frmr) {
- frmr_unmap_dma(rdma, frmr);
+ ib_dma_unmap_sg(rdma->sc_cm_id->device,
+ frmr->sg, frmr->sg_nents, frmr->direction);
+ atomic_dec(&rdma->sc_dma_used);
spin_lock_bh(&rdma->sc_frmr_q_lock);
WARN_ON_ONCE(!list_empty(&frmr->frmr_list));
list_add(&frmr->frmr_list, &rdma->sc_frmr_q);
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 14/26] RDS/IW: Convert to new memory registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (12 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 13/26] svcrdma: " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 15/26] IB/srp: Split srp_map_sg Sagi Grimberg
` (12 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Get rid of fast_reg page list and its construction.
Instead, just pass the RDS sg list to ib_map_mr_sg
and post the new ib_reg_wr.
This is done both for server IW RDMA_READ registration
and the client remote key registration.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
---
net/rds/iw.h | 5 +--
net/rds/iw_rdma.c | 128 +++++++++++++++++++-----------------------------------
net/rds/iw_send.c | 57 ++++++++++++------------
3 files changed, 75 insertions(+), 115 deletions(-)
diff --git a/net/rds/iw.h b/net/rds/iw.h
index fe858e5dd8d1..5af01d1758b3 100644
--- a/net/rds/iw.h
+++ b/net/rds/iw.h
@@ -74,13 +74,12 @@ struct rds_iw_send_work {
struct rm_rdma_op *s_op;
struct rds_iw_mapping *s_mapping;
struct ib_mr *s_mr;
- struct ib_fast_reg_page_list *s_page_list;
unsigned char s_remap_count;
union {
struct ib_send_wr s_send_wr;
struct ib_rdma_wr s_rdma_wr;
- struct ib_fast_reg_wr s_fast_reg_wr;
+ struct ib_reg_wr s_reg_wr;
};
struct ib_sge s_sge[RDS_IW_MAX_SGE];
unsigned long s_queued;
@@ -199,7 +198,7 @@ struct rds_iw_device {
/* Magic WR_ID for ACKs */
#define RDS_IW_ACK_WR_ID ((u64)0xffffffffffffffffULL)
-#define RDS_IW_FAST_REG_WR_ID ((u64)0xefefefefefefefefULL)
+#define RDS_IW_REG_WR_ID ((u64)0xefefefefefefefefULL)
#define RDS_IW_LOCAL_INV_WR_ID ((u64)0xdfdfdfdfdfdfdfdfULL)
struct rds_iw_statistics {
diff --git a/net/rds/iw_rdma.c b/net/rds/iw_rdma.c
index f8a612cc69e6..47bd68451ff7 100644
--- a/net/rds/iw_rdma.c
+++ b/net/rds/iw_rdma.c
@@ -47,7 +47,6 @@ struct rds_iw_mr {
struct rdma_cm_id *cm_id;
struct ib_mr *mr;
- struct ib_fast_reg_page_list *page_list;
struct rds_iw_mapping mapping;
unsigned char remap_count;
@@ -77,8 +76,8 @@ struct rds_iw_mr_pool {
static int rds_iw_flush_mr_pool(struct rds_iw_mr_pool *pool, int free_all);
static void rds_iw_mr_pool_flush_worker(struct work_struct *work);
-static int rds_iw_init_fastreg(struct rds_iw_mr_pool *pool, struct rds_iw_mr *ibmr);
-static int rds_iw_map_fastreg(struct rds_iw_mr_pool *pool,
+static int rds_iw_init_reg(struct rds_iw_mr_pool *pool, struct rds_iw_mr *ibmr);
+static int rds_iw_map_reg(struct rds_iw_mr_pool *pool,
struct rds_iw_mr *ibmr,
struct scatterlist *sg, unsigned int nents);
static void rds_iw_free_fastreg(struct rds_iw_mr_pool *pool, struct rds_iw_mr *ibmr);
@@ -258,19 +257,18 @@ static void rds_iw_set_scatterlist(struct rds_iw_scatterlist *sg,
sg->bytes = 0;
}
-static u64 *rds_iw_map_scatterlist(struct rds_iw_device *rds_iwdev,
- struct rds_iw_scatterlist *sg)
+static int rds_iw_map_scatterlist(struct rds_iw_device *rds_iwdev,
+ struct rds_iw_scatterlist *sg)
{
struct ib_device *dev = rds_iwdev->dev;
- u64 *dma_pages = NULL;
- int i, j, ret;
+ int i, ret;
WARN_ON(sg->dma_len);
sg->dma_len = ib_dma_map_sg(dev, sg->list, sg->len, DMA_BIDIRECTIONAL);
if (unlikely(!sg->dma_len)) {
printk(KERN_WARNING "RDS/IW: dma_map_sg failed!\n");
- return ERR_PTR(-EBUSY);
+ return -EBUSY;
}
sg->bytes = 0;
@@ -303,31 +301,14 @@ static u64 *rds_iw_map_scatterlist(struct rds_iw_device *rds_iwdev,
if (sg->dma_npages > fastreg_message_size)
goto out_unmap;
- dma_pages = kmalloc(sizeof(u64) * sg->dma_npages, GFP_ATOMIC);
- if (!dma_pages) {
- ret = -ENOMEM;
- goto out_unmap;
- }
- for (i = j = 0; i < sg->dma_len; ++i) {
- unsigned int dma_len = ib_sg_dma_len(dev, &sg->list[i]);
- u64 dma_addr = ib_sg_dma_address(dev, &sg->list[i]);
- u64 end_addr;
- end_addr = dma_addr + dma_len;
- dma_addr &= ~PAGE_MASK;
- for (; dma_addr < end_addr; dma_addr += PAGE_SIZE)
- dma_pages[j++] = dma_addr;
- BUG_ON(j > sg->dma_npages);
- }
-
- return dma_pages;
+ return 0;
out_unmap:
ib_dma_unmap_sg(rds_iwdev->dev, sg->list, sg->len, DMA_BIDIRECTIONAL);
sg->dma_len = 0;
- kfree(dma_pages);
- return ERR_PTR(ret);
+ return ret;
}
@@ -440,7 +421,7 @@ static struct rds_iw_mr *rds_iw_alloc_mr(struct rds_iw_device *rds_iwdev)
INIT_LIST_HEAD(&ibmr->mapping.m_list);
ibmr->mapping.m_mr = ibmr;
- err = rds_iw_init_fastreg(pool, ibmr);
+ err = rds_iw_init_reg(pool, ibmr);
if (err)
goto out_no_cigar;
@@ -622,7 +603,7 @@ void *rds_iw_get_mr(struct scatterlist *sg, unsigned long nents,
ibmr->cm_id = cm_id;
ibmr->device = rds_iwdev;
- ret = rds_iw_map_fastreg(rds_iwdev->mr_pool, ibmr, sg, nents);
+ ret = rds_iw_map_reg(rds_iwdev->mr_pool, ibmr, sg, nents);
if (ret == 0)
*key_ret = ibmr->mr->rkey;
else
@@ -638,7 +619,7 @@ out:
}
/*
- * iWARP fastreg handling
+ * iWARP reg handling
*
* The life cycle of a fastreg registration is a bit different from
* FMRs.
@@ -650,7 +631,7 @@ out:
* This creates a bit of a problem for us, as we do not have the destination
* IP in GET_MR, so the connection must be setup prior to the GET_MR call for
* RDMA to be correctly setup. If a fastreg request is present, rds_iw_xmit
- * will try to queue a LOCAL_INV (if needed) and a FAST_REG_MR work request
+ * will try to queue a LOCAL_INV (if needed) and a REG_MR work request
* before queuing the SEND. When completions for these arrive, they are
* dispatched to the MR has a bit set showing that RDMa can be performed.
*
@@ -659,11 +640,10 @@ out:
* The expectation there is that this invalidation step includes ALL
* PREVIOUSLY FREED MRs.
*/
-static int rds_iw_init_fastreg(struct rds_iw_mr_pool *pool,
- struct rds_iw_mr *ibmr)
+static int rds_iw_init_reg(struct rds_iw_mr_pool *pool,
+ struct rds_iw_mr *ibmr)
{
struct rds_iw_device *rds_iwdev = pool->device;
- struct ib_fast_reg_page_list *page_list = NULL;
struct ib_mr *mr;
int err;
@@ -676,56 +656,44 @@ static int rds_iw_init_fastreg(struct rds_iw_mr_pool *pool,
return err;
}
- /* FIXME - this is overkill, but mapping->m_sg.dma_len/mapping->m_sg.dma_npages
- * is not filled in.
- */
- page_list = ib_alloc_fast_reg_page_list(rds_iwdev->dev, pool->max_message_size);
- if (IS_ERR(page_list)) {
- err = PTR_ERR(page_list);
-
- printk(KERN_WARNING "RDS/IW: ib_alloc_fast_reg_page_list failed (err=%d)\n", err);
- ib_dereg_mr(mr);
- return err;
- }
-
- ibmr->page_list = page_list;
ibmr->mr = mr;
return 0;
}
-static int rds_iw_rdma_build_fastreg(struct rds_iw_mapping *mapping)
+static int rds_iw_rdma_reg_mr(struct rds_iw_mapping *mapping)
{
struct rds_iw_mr *ibmr = mapping->m_mr;
- struct ib_fast_reg_wr f_wr;
+ struct rds_iw_scatterlist *m_sg = &mapping->m_sg;
+ struct ib_reg_wr reg_wr;
struct ib_send_wr *failed_wr;
- int ret;
+ int ret, n;
+
+ n = ib_map_mr_sg_zbva(ibmr->mr, m_sg->list, m_sg->len, PAGE_SIZE);
+ if (unlikely(n != m_sg->len))
+ return n < 0 ? n : -EINVAL;
+
+ reg_wr.wr.next = NULL;
+ reg_wr.wr.opcode = IB_WR_REG_MR;
+ reg_wr.wr.wr_id = RDS_IW_REG_WR_ID;
+ reg_wr.wr.num_sge = 0;
+ reg_wr.mr = ibmr->mr;
+ reg_wr.key = mapping->m_rkey;
+ reg_wr.access = IB_ACCESS_LOCAL_WRITE |
+ IB_ACCESS_REMOTE_READ |
+ IB_ACCESS_REMOTE_WRITE;
/*
- * Perform a WR for the fast_reg_mr. Each individual page
+ * Perform a WR for the reg_mr. Each individual page
* in the sg list is added to the fast reg page list and placed
- * inside the fast_reg_mr WR. The key used is a rolling 8bit
+ * inside the reg_mr WR. The key used is a rolling 8bit
* counter, which should guarantee uniqueness.
*/
ib_update_fast_reg_key(ibmr->mr, ibmr->remap_count++);
mapping->m_rkey = ibmr->mr->rkey;
- memset(&f_wr, 0, sizeof(f_wr));
- f_wr.wr.wr_id = RDS_IW_FAST_REG_WR_ID;
- f_wr.wr.opcode = IB_WR_FAST_REG_MR;
- f_wr.length = mapping->m_sg.bytes;
- f_wr.rkey = mapping->m_rkey;
- f_wr.page_list = ibmr->page_list;
- f_wr.page_list_len = mapping->m_sg.dma_len;
- f_wr.page_shift = PAGE_SHIFT;
- f_wr.access_flags = IB_ACCESS_LOCAL_WRITE |
- IB_ACCESS_REMOTE_READ |
- IB_ACCESS_REMOTE_WRITE;
- f_wr.iova_start = 0;
- f_wr.wr.send_flags = IB_SEND_SIGNALED;
-
- failed_wr = &f_wr.wr;
- ret = ib_post_send(ibmr->cm_id->qp, &f_wr.wr, &failed_wr);
- BUG_ON(failed_wr != &f_wr.wr);
+ failed_wr = ®_wr.wr;
+ ret = ib_post_send(ibmr->cm_id->qp, ®_wr.wr, &failed_wr);
+ BUG_ON(failed_wr != ®_wr.wr);
if (ret)
printk_ratelimited(KERN_WARNING "RDS/IW: %s:%d ib_post_send returned %d\n",
__func__, __LINE__, ret);
@@ -757,21 +725,20 @@ out:
return ret;
}
-static int rds_iw_map_fastreg(struct rds_iw_mr_pool *pool,
- struct rds_iw_mr *ibmr,
- struct scatterlist *sg,
- unsigned int sg_len)
+static int rds_iw_map_reg(struct rds_iw_mr_pool *pool,
+ struct rds_iw_mr *ibmr,
+ struct scatterlist *sg,
+ unsigned int sg_len)
{
struct rds_iw_device *rds_iwdev = pool->device;
struct rds_iw_mapping *mapping = &ibmr->mapping;
u64 *dma_pages;
- int i, ret = 0;
+ int ret = 0;
rds_iw_set_scatterlist(&mapping->m_sg, sg, sg_len);
- dma_pages = rds_iw_map_scatterlist(rds_iwdev, &mapping->m_sg);
- if (IS_ERR(dma_pages)) {
- ret = PTR_ERR(dma_pages);
+ ret = rds_iw_map_scatterlist(rds_iwdev, &mapping->m_sg);
+ if (ret) {
dma_pages = NULL;
goto out;
}
@@ -781,10 +748,7 @@ static int rds_iw_map_fastreg(struct rds_iw_mr_pool *pool,
goto out;
}
- for (i = 0; i < mapping->m_sg.dma_npages; ++i)
- ibmr->page_list->page_list[i] = dma_pages[i];
-
- ret = rds_iw_rdma_build_fastreg(mapping);
+ ret = rds_iw_rdma_reg_mr(mapping);
if (ret)
goto out;
@@ -870,8 +834,6 @@ static unsigned int rds_iw_unmap_fastreg_list(struct rds_iw_mr_pool *pool,
static void rds_iw_destroy_fastreg(struct rds_iw_mr_pool *pool,
struct rds_iw_mr *ibmr)
{
- if (ibmr->page_list)
- ib_free_fast_reg_page_list(ibmr->page_list);
if (ibmr->mr)
ib_dereg_mr(ibmr->mr);
}
diff --git a/net/rds/iw_send.c b/net/rds/iw_send.c
index f6e23c515b44..e20bd503f4bd 100644
--- a/net/rds/iw_send.c
+++ b/net/rds/iw_send.c
@@ -159,13 +159,6 @@ void rds_iw_send_init_ring(struct rds_iw_connection *ic)
printk(KERN_WARNING "RDS/IW: ib_alloc_mr failed\n");
break;
}
-
- send->s_page_list = ib_alloc_fast_reg_page_list(
- ic->i_cm_id->device, fastreg_message_size);
- if (IS_ERR(send->s_page_list)) {
- printk(KERN_WARNING "RDS/IW: ib_alloc_fast_reg_page_list failed\n");
- break;
- }
}
}
@@ -177,8 +170,6 @@ void rds_iw_send_clear_ring(struct rds_iw_connection *ic)
for (i = 0, send = ic->i_sends; i < ic->i_send_ring.w_nr; i++, send++) {
BUG_ON(!send->s_mr);
ib_dereg_mr(send->s_mr);
- BUG_ON(!send->s_page_list);
- ib_free_fast_reg_page_list(send->s_page_list);
if (send->s_send_wr.opcode == 0xdead)
continue;
if (send->s_rm)
@@ -227,7 +218,7 @@ void rds_iw_send_cq_comp_handler(struct ib_cq *cq, void *context)
continue;
}
- if (wc.opcode == IB_WC_FAST_REG_MR && wc.wr_id == RDS_IW_FAST_REG_WR_ID) {
+ if (wc.opcode == IB_WC_REG_MR && wc.wr_id == RDS_IW_REG_WR_ID) {
ic->i_fastreg_posted = 1;
continue;
}
@@ -252,7 +243,7 @@ void rds_iw_send_cq_comp_handler(struct ib_cq *cq, void *context)
if (send->s_rm)
rds_iw_send_unmap_rm(ic, send, wc.status);
break;
- case IB_WR_FAST_REG_MR:
+ case IB_WR_REG_MR:
case IB_WR_RDMA_WRITE:
case IB_WR_RDMA_READ:
case IB_WR_RDMA_READ_WITH_INV:
@@ -770,24 +761,26 @@ out:
return ret;
}
-static void rds_iw_build_send_fastreg(struct rds_iw_device *rds_iwdev, struct rds_iw_connection *ic, struct rds_iw_send_work *send, int nent, int len, u64 sg_addr)
+static int rds_iw_build_send_reg(struct rds_iw_send_work *send,
+ struct scatterlist *sg,
+ int sg_nents)
{
- BUG_ON(nent > send->s_page_list->max_page_list_len);
- /*
- * Perform a WR for the fast_reg_mr. Each individual page
- * in the sg list is added to the fast reg page list and placed
- * inside the fast_reg_mr WR.
- */
- send->s_fast_reg_wr.wr.opcode = IB_WR_FAST_REG_MR;
- send->s_fast_reg_wr.length = len;
- send->s_fast_reg_wr.rkey = send->s_mr->rkey;
- send->s_fast_reg_wr.page_list = send->s_page_list;
- send->s_fast_reg_wr.page_list_len = nent;
- send->s_fast_reg_wr.page_shift = PAGE_SHIFT;
- send->s_fast_reg_wr.access_flags = IB_ACCESS_REMOTE_WRITE;
- send->s_fast_reg_wr.iova_start = sg_addr;
+ int n;
+
+ n = ib_map_mr_sg(send->s_mr, sg, sg_nents, PAGE_SIZE);
+ if (unlikely(n != sg_nents))
+ return n < 0 ? n : -EINVAL;
+
+ send->s_reg_wr.wr.opcode = IB_WR_REG_MR;
+ send->s_reg_wr.wr.wr_id = 0;
+ send->s_reg_wr.wr.num_sge = 0;
+ send->s_reg_wr.mr = send->s_mr;
+ send->s_reg_wr.key = send->s_mr->rkey;
+ send->s_reg_wr.access = IB_ACCESS_REMOTE_WRITE;
ib_update_fast_reg_key(send->s_mr, send->s_remap_count++);
+
+ return 0;
}
int rds_iw_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op)
@@ -808,6 +801,7 @@ int rds_iw_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op)
int sent;
int ret;
int num_sge;
+ int sg_nents;
rds_iwdev = ib_get_client_data(ic->i_cm_id->device, &rds_iw_client);
@@ -861,6 +855,7 @@ int rds_iw_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op)
scat = &op->op_sg[0];
sent = 0;
num_sge = op->op_count;
+ sg_nents = 0;
for (i = 0; i < work_alloc && scat != &op->op_sg[op->op_count]; i++) {
send->s_rdma_wr.wr.send_flags = 0;
@@ -904,7 +899,7 @@ int rds_iw_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op)
len = ib_sg_dma_len(ic->i_cm_id->device, scat);
if (send->s_rdma_wr.wr.opcode == IB_WR_RDMA_READ_WITH_INV)
- send->s_page_list->page_list[j] = ib_sg_dma_address(ic->i_cm_id->device, scat);
+ sg_nents++;
else {
send->s_sge[j].addr = ib_sg_dma_address(ic->i_cm_id->device, scat);
send->s_sge[j].length = len;
@@ -951,8 +946,12 @@ int rds_iw_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op)
* fastreg_mr (or possibly a dma_mr)
*/
if (!op->op_write) {
- rds_iw_build_send_fastreg(rds_iwdev, ic, &ic->i_sends[fr_pos],
- op->op_count, sent, conn->c_xmit_rm->m_rs->rs_user_addr);
+ ret = rds_iw_build_send_reg(&ic->i_sends[fr_pos],
+ &op->op_sg[0], sg_nents);
+ if (ret) {
+ printk(KERN_WARNING "RDS/IW: failed to reg send mem\n");
+ goto out;
+ }
work_alloc++;
}
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 15/26] IB/srp: Split srp_map_sg
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (13 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 14/26] RDS/IW: Convert " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 16/26] IB/srp: Convert to new registration API Sagi Grimberg
` (11 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
This is a preparation patch for the new registration API
conversion. It splits srp_map_sg per registration strategy
(srp_map_sg[fmr|fr|dma]. On its own it adds some code duplication,
but it makes the API switch easier to comprehend.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Tested-by: Bart Van Assche <bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
---
drivers/infiniband/ulp/srp/ib_srp.c | 157 ++++++++++++++++++++++++------------
1 file changed, 106 insertions(+), 51 deletions(-)
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 1390f99ca76b..3ec94c109e1b 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -1286,6 +1286,17 @@ static int srp_map_finish_fmr(struct srp_map_state *state,
if (state->fmr.next >= state->fmr.end)
return -ENOMEM;
+ WARN_ON_ONCE(!dev->use_fmr);
+
+ if (state->npages == 0)
+ return 0;
+
+ if (state->npages == 1 && target->global_mr) {
+ srp_map_desc(state, state->base_dma_addr, state->dma_len,
+ target->global_mr->rkey);
+ goto reset_state;
+ }
+
fmr = ib_fmr_pool_map_phys(ch->fmr_pool, state->pages,
state->npages, io_addr);
if (IS_ERR(fmr))
@@ -1297,6 +1308,10 @@ static int srp_map_finish_fmr(struct srp_map_state *state,
srp_map_desc(state, state->base_dma_addr & ~dev->mr_page_mask,
state->dma_len, fmr->fmr->rkey);
+reset_state:
+ state->npages = 0;
+ state->dma_len = 0;
+
return 0;
}
@@ -1309,10 +1324,22 @@ static int srp_map_finish_fr(struct srp_map_state *state,
struct ib_fast_reg_wr wr;
struct srp_fr_desc *desc;
u32 rkey;
+ int err;
if (state->fr.next >= state->fr.end)
return -ENOMEM;
+ WARN_ON_ONCE(!dev->use_fast_reg);
+
+ if (state->npages == 0)
+ return 0;
+
+ if (state->npages == 1 && target->global_mr) {
+ srp_map_desc(state, state->base_dma_addr, state->dma_len,
+ target->global_mr->rkey);
+ goto reset_state;
+ }
+
desc = srp_fr_pool_get(ch->fr_pool);
if (!desc)
return -ENOMEM;
@@ -1342,7 +1369,15 @@ static int srp_map_finish_fr(struct srp_map_state *state,
srp_map_desc(state, state->base_dma_addr, state->dma_len,
desc->mr->rkey);
- return ib_post_send(ch->qp, &wr.wr, &bad_wr);
+ err = ib_post_send(ch->qp, &wr.wr, &bad_wr);
+ if (err)
+ return err;
+
+reset_state:
+ state->npages = 0;
+ state->dma_len = 0;
+
+ return 0;
}
static int srp_finish_mapping(struct srp_map_state *state,
@@ -1350,26 +1385,9 @@ static int srp_finish_mapping(struct srp_map_state *state,
{
struct srp_target_port *target = ch->target;
struct srp_device *dev = target->srp_host->srp_dev;
- int ret = 0;
- WARN_ON_ONCE(!dev->use_fast_reg && !dev->use_fmr);
-
- if (state->npages == 0)
- return 0;
-
- if (state->npages == 1 && target->global_mr)
- srp_map_desc(state, state->base_dma_addr, state->dma_len,
- target->global_mr->rkey);
- else
- ret = dev->use_fast_reg ? srp_map_finish_fr(state, ch) :
- srp_map_finish_fmr(state, ch);
-
- if (ret == 0) {
- state->npages = 0;
- state->dma_len = 0;
- }
-
- return ret;
+ return dev->use_fast_reg ? srp_map_finish_fr(state, ch) :
+ srp_map_finish_fmr(state, ch);
}
static int srp_map_sg_entry(struct srp_map_state *state,
@@ -1415,47 +1433,79 @@ static int srp_map_sg_entry(struct srp_map_state *state,
return ret;
}
-static int srp_map_sg(struct srp_map_state *state, struct srp_rdma_ch *ch,
- struct srp_request *req, struct scatterlist *scat,
- int count)
+static int srp_map_sg_fmr(struct srp_map_state *state, struct srp_rdma_ch *ch,
+ struct srp_request *req, struct scatterlist *scat,
+ int count)
{
- struct srp_target_port *target = ch->target;
- struct srp_device *dev = target->srp_host->srp_dev;
struct scatterlist *sg;
int i, ret;
- state->desc = req->indirect_desc;
- state->pages = req->map_page;
- if (dev->use_fast_reg) {
- state->fr.next = req->fr_list;
- state->fr.end = req->fr_list + target->cmd_sg_cnt;
- } else if (dev->use_fmr) {
- state->fmr.next = req->fmr_list;
- state->fmr.end = req->fmr_list + target->cmd_sg_cnt;
+ state->desc = req->indirect_desc;
+ state->pages = req->map_page;
+ state->fmr.next = req->fmr_list;
+ state->fmr.end = req->fmr_list + ch->target->cmd_sg_cnt;
+
+ for_each_sg(scat, sg, count, i) {
+ ret = srp_map_sg_entry(state, ch, sg, i);
+ if (ret)
+ return ret;
}
- if (dev->use_fast_reg || dev->use_fmr) {
- for_each_sg(scat, sg, count, i) {
- ret = srp_map_sg_entry(state, ch, sg, i);
- if (ret)
- goto out;
- }
- ret = srp_finish_mapping(state, ch);
+ ret = srp_finish_mapping(state, ch);
+ if (ret)
+ return ret;
+
+ req->nmdesc = state->nmdesc;
+
+ return 0;
+}
+
+static int srp_map_sg_fr(struct srp_map_state *state, struct srp_rdma_ch *ch,
+ struct srp_request *req, struct scatterlist *scat,
+ int count)
+{
+ struct scatterlist *sg;
+ int i, ret;
+
+ state->desc = req->indirect_desc;
+ state->pages = req->map_page;
+ state->fmr.next = req->fmr_list;
+ state->fmr.end = req->fmr_list + ch->target->cmd_sg_cnt;
+
+ for_each_sg(scat, sg, count, i) {
+ ret = srp_map_sg_entry(state, ch, sg, i);
if (ret)
- goto out;
- } else {
- for_each_sg(scat, sg, count, i) {
- srp_map_desc(state, ib_sg_dma_address(dev->dev, sg),
- ib_sg_dma_len(dev->dev, sg),
- target->global_mr->rkey);
- }
+ return ret;
}
+ ret = srp_finish_mapping(state, ch);
+ if (ret)
+ return ret;
+
req->nmdesc = state->nmdesc;
- ret = 0;
-out:
- return ret;
+ return 0;
+}
+
+static int srp_map_sg_dma(struct srp_map_state *state, struct srp_rdma_ch *ch,
+ struct srp_request *req, struct scatterlist *scat,
+ int count)
+{
+ struct srp_target_port *target = ch->target;
+ struct srp_device *dev = target->srp_host->srp_dev;
+ struct scatterlist *sg;
+ int i;
+
+ state->desc = req->indirect_desc;
+ for_each_sg(scat, sg, count, i) {
+ srp_map_desc(state, ib_sg_dma_address(dev->dev, sg),
+ ib_sg_dma_len(dev->dev, sg),
+ target->global_mr->rkey);
+ }
+
+ req->nmdesc = state->nmdesc;
+
+ return 0;
}
/*
@@ -1563,7 +1613,12 @@ static int srp_map_data(struct scsi_cmnd *scmnd, struct srp_rdma_ch *ch,
target->indirect_size, DMA_TO_DEVICE);
memset(&state, 0, sizeof(state));
- srp_map_sg(&state, ch, req, scat, count);
+ if (dev->use_fast_reg)
+ srp_map_sg_fr(&state, ch, req, scat, count);
+ else if (dev->use_fmr)
+ srp_map_sg_fmr(&state, ch, req, scat, count);
+ else
+ srp_map_sg_dma(&state, ch, req, scat, count);
/* We've mapped the request, now pull as much of the indirect
* descriptor table as we can into the command buffer. If this
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 16/26] IB/srp: Convert to new registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (14 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 15/26] IB/srp: Split srp_map_sg Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 17/26] IB/srp: Remove srp_finish_mapping Sagi Grimberg
` (10 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Instead of constructing a page list, call ib_map_mr_sg
and post a new ib_reg_wr. srp_map_finish_fr now returns
the number of sg elements registered.
Remove srp_finish_mapping since no one is calling it.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Tested-by: Bart Van Assche <bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
---
drivers/infiniband/ulp/srp/ib_srp.c | 125 ++++++++++++++++++------------------
drivers/infiniband/ulp/srp/ib_srp.h | 11 +++-
2 files changed, 71 insertions(+), 65 deletions(-)
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 3ec94c109e1b..6d399378928d 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -340,8 +340,6 @@ static void srp_destroy_fr_pool(struct srp_fr_pool *pool)
return;
for (i = 0, d = &pool->desc[0]; i < pool->size; i++, d++) {
- if (d->frpl)
- ib_free_fast_reg_page_list(d->frpl);
if (d->mr)
ib_dereg_mr(d->mr);
}
@@ -362,7 +360,6 @@ static struct srp_fr_pool *srp_create_fr_pool(struct ib_device *device,
struct srp_fr_pool *pool;
struct srp_fr_desc *d;
struct ib_mr *mr;
- struct ib_fast_reg_page_list *frpl;
int i, ret = -EINVAL;
if (pool_size <= 0)
@@ -385,12 +382,6 @@ static struct srp_fr_pool *srp_create_fr_pool(struct ib_device *device,
goto destroy_pool;
}
d->mr = mr;
- frpl = ib_alloc_fast_reg_page_list(device, max_page_list_len);
- if (IS_ERR(frpl)) {
- ret = PTR_ERR(frpl);
- goto destroy_pool;
- }
- d->frpl = frpl;
list_add_tail(&d->entry, &pool->free_list);
}
@@ -1321,23 +1312,24 @@ static int srp_map_finish_fr(struct srp_map_state *state,
struct srp_target_port *target = ch->target;
struct srp_device *dev = target->srp_host->srp_dev;
struct ib_send_wr *bad_wr;
- struct ib_fast_reg_wr wr;
+ struct ib_reg_wr wr;
struct srp_fr_desc *desc;
u32 rkey;
- int err;
+ int n, err;
if (state->fr.next >= state->fr.end)
return -ENOMEM;
WARN_ON_ONCE(!dev->use_fast_reg);
- if (state->npages == 0)
+ if (state->sg_nents == 0)
return 0;
- if (state->npages == 1 && target->global_mr) {
- srp_map_desc(state, state->base_dma_addr, state->dma_len,
+ if (state->sg_nents == 1 && target->global_mr) {
+ srp_map_desc(state, sg_dma_address(state->sg),
+ sg_dma_len(state->sg),
target->global_mr->rkey);
- goto reset_state;
+ return 1;
}
desc = srp_fr_pool_get(ch->fr_pool);
@@ -1347,37 +1339,33 @@ static int srp_map_finish_fr(struct srp_map_state *state,
rkey = ib_inc_rkey(desc->mr->rkey);
ib_update_fast_reg_key(desc->mr, rkey);
- memcpy(desc->frpl->page_list, state->pages,
- sizeof(state->pages[0]) * state->npages);
+ n = ib_map_mr_sg(desc->mr, state->sg, state->sg_nents,
+ dev->mr_page_size);
+ if (unlikely(n < 0))
+ return n;
- memset(&wr, 0, sizeof(wr));
- wr.wr.opcode = IB_WR_FAST_REG_MR;
+ wr.wr.next = NULL;
+ wr.wr.opcode = IB_WR_REG_MR;
wr.wr.wr_id = FAST_REG_WR_ID_MASK;
- wr.iova_start = state->base_dma_addr;
- wr.page_list = desc->frpl;
- wr.page_list_len = state->npages;
- wr.page_shift = ilog2(dev->mr_page_size);
- wr.length = state->dma_len;
- wr.access_flags = (IB_ACCESS_LOCAL_WRITE |
- IB_ACCESS_REMOTE_READ |
- IB_ACCESS_REMOTE_WRITE);
- wr.rkey = desc->mr->lkey;
+ wr.wr.num_sge = 0;
+ wr.wr.send_flags = 0;
+ wr.mr = desc->mr;
+ wr.key = desc->mr->rkey;
+ wr.access = (IB_ACCESS_LOCAL_WRITE |
+ IB_ACCESS_REMOTE_READ |
+ IB_ACCESS_REMOTE_WRITE);
*state->fr.next++ = desc;
state->nmdesc++;
- srp_map_desc(state, state->base_dma_addr, state->dma_len,
- desc->mr->rkey);
+ srp_map_desc(state, desc->mr->iova,
+ desc->mr->length, desc->mr->rkey);
err = ib_post_send(ch->qp, &wr.wr, &bad_wr);
- if (err)
+ if (unlikely(err))
return err;
-reset_state:
- state->npages = 0;
- state->dma_len = 0;
-
- return 0;
+ return n;
}
static int srp_finish_mapping(struct srp_map_state *state,
@@ -1407,7 +1395,7 @@ static int srp_map_sg_entry(struct srp_map_state *state,
while (dma_len) {
unsigned offset = dma_addr & ~dev->mr_page_mask;
if (state->npages == dev->max_pages_per_mr || offset != 0) {
- ret = srp_finish_mapping(state, ch);
+ ret = srp_map_finish_fmr(state, ch);
if (ret)
return ret;
}
@@ -1429,7 +1417,7 @@ static int srp_map_sg_entry(struct srp_map_state *state,
*/
ret = 0;
if (len != dev->mr_page_size)
- ret = srp_finish_mapping(state, ch);
+ ret = srp_map_finish_fmr(state, ch);
return ret;
}
@@ -1451,7 +1439,7 @@ static int srp_map_sg_fmr(struct srp_map_state *state, struct srp_rdma_ch *ch,
return ret;
}
- ret = srp_finish_mapping(state, ch);
+ ret = srp_map_finish_fmr(state, ch);
if (ret)
return ret;
@@ -1464,23 +1452,23 @@ static int srp_map_sg_fr(struct srp_map_state *state, struct srp_rdma_ch *ch,
struct srp_request *req, struct scatterlist *scat,
int count)
{
- struct scatterlist *sg;
- int i, ret;
-
state->desc = req->indirect_desc;
- state->pages = req->map_page;
- state->fmr.next = req->fmr_list;
- state->fmr.end = req->fmr_list + ch->target->cmd_sg_cnt;
+ state->fr.next = req->fr_list;
+ state->fr.end = req->fr_list + ch->target->cmd_sg_cnt;
+ state->sg = scat;
+ state->sg_nents = scsi_sg_count(req->scmnd);
- for_each_sg(scat, sg, count, i) {
- ret = srp_map_sg_entry(state, ch, sg, i);
- if (ret)
- return ret;
- }
+ while (state->sg_nents) {
+ int i, n;
- ret = srp_finish_mapping(state, ch);
- if (ret)
- return ret;
+ n = srp_map_finish_fr(state, ch);
+ if (unlikely(n < 0))
+ return n;
+
+ state->sg_nents -= n;
+ for (i = 0; i < n; i++)
+ state->sg = sg_next(state->sg);
+ }
req->nmdesc = state->nmdesc;
@@ -1524,6 +1512,7 @@ static int srp_map_idb(struct srp_rdma_ch *ch, struct srp_request *req,
struct srp_map_state state;
struct srp_direct_buf idb_desc;
u64 idb_pages[1];
+ struct scatterlist idb_sg[1];
int ret;
memset(&state, 0, sizeof(state));
@@ -1531,20 +1520,32 @@ static int srp_map_idb(struct srp_rdma_ch *ch, struct srp_request *req,
state.gen.next = next_mr;
state.gen.end = end_mr;
state.desc = &idb_desc;
- state.pages = idb_pages;
- state.pages[0] = (req->indirect_dma_addr &
- dev->mr_page_mask);
- state.npages = 1;
state.base_dma_addr = req->indirect_dma_addr;
state.dma_len = idb_len;
- ret = srp_finish_mapping(&state, ch);
- if (ret < 0)
- goto out;
+
+ if (dev->use_fast_reg) {
+ state.sg = idb_sg;
+ state.sg_nents = 1;
+ sg_set_buf(idb_sg, req->indirect_desc, idb_len);
+ idb_sg->dma_address = req->indirect_dma_addr; /* hack! */
+ ret = srp_map_finish_fr(&state, ch);
+ if (ret < 0)
+ return ret;
+ } else if (dev->use_fmr) {
+ state.pages = idb_pages;
+ state.pages[0] = (req->indirect_dma_addr &
+ dev->mr_page_mask);
+ state.npages = 1;
+ ret = srp_map_finish_fmr(&state, ch);
+ if (ret < 0)
+ return ret;
+ } else {
+ return -EINVAL;
+ }
*idb_rkey = idb_desc.key;
-out:
- return ret;
+ return 0;
}
static int srp_map_data(struct scsi_cmnd *scmnd, struct srp_rdma_ch *ch,
diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h
index 3608f2e4819c..87a2a919dc43 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.h
+++ b/drivers/infiniband/ulp/srp/ib_srp.h
@@ -242,7 +242,6 @@ struct srp_iu {
struct srp_fr_desc {
struct list_head entry;
struct ib_mr *mr;
- struct ib_fast_reg_page_list *frpl;
};
/**
@@ -294,11 +293,17 @@ struct srp_map_state {
} gen;
};
struct srp_direct_buf *desc;
- u64 *pages;
+ union {
+ u64 *pages;
+ struct scatterlist *sg;
+ };
dma_addr_t base_dma_addr;
u32 dma_len;
u32 total_len;
- unsigned int npages;
+ union {
+ unsigned int npages;
+ int sg_nents;
+ };
unsigned int nmdesc;
unsigned int ndesc;
};
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 17/26] IB/srp: Remove srp_finish_mapping
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (15 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 16/26] IB/srp: Convert to new registration API Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 18/26] IB/srp: Dont allocate a page vector when using fast_reg Sagi Grimberg
` (9 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
No callers left, remove it.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Tested-by: Bart Van Assche <bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
---
drivers/infiniband/ulp/srp/ib_srp.c | 10 ----------
1 file changed, 10 deletions(-)
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 6d399378928d..d4a5a9b86390 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -1368,16 +1368,6 @@ static int srp_map_finish_fr(struct srp_map_state *state,
return n;
}
-static int srp_finish_mapping(struct srp_map_state *state,
- struct srp_rdma_ch *ch)
-{
- struct srp_target_port *target = ch->target;
- struct srp_device *dev = target->srp_host->srp_dev;
-
- return dev->use_fast_reg ? srp_map_finish_fr(state, ch) :
- srp_map_finish_fmr(state, ch);
-}
-
static int srp_map_sg_entry(struct srp_map_state *state,
struct srp_rdma_ch *ch,
struct scatterlist *sg, int sg_index)
--
1.8.4.3
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 18/26] IB/srp: Dont allocate a page vector when using fast_reg
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (16 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 17/26] IB/srp: Remove srp_finish_mapping Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 19/26] IB/mlx5: Remove old FRWR API support Sagi Grimberg
` (8 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
The new fast registration API does not reuqire a page vector
so we can't avoid allocating it.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Tested-by: Bart Van Assche <bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
---
drivers/infiniband/ulp/srp/ib_srp.c | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index d4a5a9b86390..d00f819c09b0 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -840,11 +840,12 @@ static void srp_free_req_data(struct srp_target_port *target,
for (i = 0; i < target->req_ring_size; ++i) {
req = &ch->req_ring[i];
- if (dev->use_fast_reg)
+ if (dev->use_fast_reg) {
kfree(req->fr_list);
- else
+ } else {
kfree(req->fmr_list);
- kfree(req->map_page);
+ kfree(req->map_page);
+ }
if (req->indirect_dma_addr) {
ib_dma_unmap_single(ibdev, req->indirect_dma_addr,
target->indirect_size,
@@ -878,14 +879,15 @@ static int srp_alloc_req_data(struct srp_rdma_ch *ch)
GFP_KERNEL);
if (!mr_list)
goto out;
- if (srp_dev->use_fast_reg)
+ if (srp_dev->use_fast_reg) {
req->fr_list = mr_list;
- else
+ } else {
req->fmr_list = mr_list;
- req->map_page = kmalloc(srp_dev->max_pages_per_mr *
- sizeof(void *), GFP_KERNEL);
- if (!req->map_page)
- goto out;
+ req->map_page = kmalloc(srp_dev->max_pages_per_mr *
+ sizeof(void *), GFP_KERNEL);
+ if (!req->map_page)
+ goto out;
+ }
req->indirect_desc = kmalloc(target->indirect_size, GFP_KERNEL);
if (!req->indirect_desc)
goto out;
--
1.8.4.3
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 19/26] IB/mlx5: Remove old FRWR API support
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (17 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 18/26] IB/srp: Dont allocate a page vector when using fast_reg Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 20/26] IB/mlx4: " Sagi Grimberg
` (7 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
No ULP uses it anymore, go ahead and remove it.
Keep only the local invalidate part of the handlers.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/hw/mlx5/cq.c | 3 --
drivers/infiniband/hw/mlx5/main.c | 2 -
drivers/infiniband/hw/mlx5/mlx5_ib.h | 14 ------
drivers/infiniband/hw/mlx5/mr.c | 42 ----------------
drivers/infiniband/hw/mlx5/qp.c | 97 ++++--------------------------------
5 files changed, 9 insertions(+), 149 deletions(-)
diff --git a/drivers/infiniband/hw/mlx5/cq.c b/drivers/infiniband/hw/mlx5/cq.c
index 206930096d56..3dfd287256d6 100644
--- a/drivers/infiniband/hw/mlx5/cq.c
+++ b/drivers/infiniband/hw/mlx5/cq.c
@@ -112,9 +112,6 @@ static enum ib_wc_opcode get_umr_comp(struct mlx5_ib_wq *wq, int idx)
case IB_WR_REG_MR:
return IB_WC_REG_MR;
- case IB_WR_FAST_REG_MR:
- return IB_WC_FAST_REG_MR;
-
default:
pr_warn("unknown completion status\n");
return 0;
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 7e93044ea6ce..bdd60a69be2d 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -1426,8 +1426,6 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
dev->ib_dev.process_mad = mlx5_ib_process_mad;
dev->ib_dev.alloc_mr = mlx5_ib_alloc_mr;
dev->ib_dev.map_mr_sg = mlx5_ib_map_mr_sg;
- dev->ib_dev.alloc_fast_reg_page_list = mlx5_ib_alloc_fast_reg_page_list;
- dev->ib_dev.free_fast_reg_page_list = mlx5_ib_free_fast_reg_page_list;
dev->ib_dev.check_mr_status = mlx5_ib_check_mr_status;
dev->ib_dev.get_port_immutable = mlx5_port_immutable;
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index a29b28c31c44..633347260b79 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -338,12 +338,6 @@ struct mlx5_ib_mr {
void *descs_alloc;
};
-struct mlx5_ib_fast_reg_page_list {
- struct ib_fast_reg_page_list ibfrpl;
- __be64 *mapped_page_list;
- dma_addr_t map;
-};
-
struct mlx5_ib_umr_context {
enum ib_wc_status status;
struct completion done;
@@ -494,11 +488,6 @@ static inline struct mlx5_ib_mr *to_mmr(struct ib_mr *ibmr)
return container_of(ibmr, struct mlx5_ib_mr, ibmr);
}
-static inline struct mlx5_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
-{
- return container_of(ibfrpl, struct mlx5_ib_fast_reg_page_list, ibfrpl);
-}
-
struct mlx5_ib_ah {
struct ib_ah ibah;
struct mlx5_av av;
@@ -569,9 +558,6 @@ struct ib_mr *mlx5_ib_alloc_mr(struct ib_pd *pd,
int mlx5_ib_map_mr_sg(struct ib_mr *ibmr,
struct scatterlist *sg,
int sg_nents);
-struct ib_fast_reg_page_list *mlx5_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
- int page_list_len);
-void mlx5_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
const struct ib_wc *in_wc, const struct ib_grh *in_grh,
const struct ib_mad_hdr *in, size_t in_mad_size,
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index 6177e8053888..ec8993a7b3be 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -1383,48 +1383,6 @@ err_free:
return ERR_PTR(err);
}
-struct ib_fast_reg_page_list *mlx5_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
- int page_list_len)
-{
- struct mlx5_ib_fast_reg_page_list *mfrpl;
- int size = page_list_len * sizeof(u64);
-
- mfrpl = kmalloc(sizeof(*mfrpl), GFP_KERNEL);
- if (!mfrpl)
- return ERR_PTR(-ENOMEM);
-
- mfrpl->ibfrpl.page_list = kmalloc(size, GFP_KERNEL);
- if (!mfrpl->ibfrpl.page_list)
- goto err_free;
-
- mfrpl->mapped_page_list = dma_alloc_coherent(ibdev->dma_device,
- size, &mfrpl->map,
- GFP_KERNEL);
- if (!mfrpl->mapped_page_list)
- goto err_free;
-
- WARN_ON(mfrpl->map & 0x3f);
-
- return &mfrpl->ibfrpl;
-
-err_free:
- kfree(mfrpl->ibfrpl.page_list);
- kfree(mfrpl);
- return ERR_PTR(-ENOMEM);
-}
-
-void mlx5_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
-{
- struct mlx5_ib_fast_reg_page_list *mfrpl = to_mfrpl(page_list);
- struct mlx5_ib_dev *dev = to_mdev(page_list->device);
- int size = page_list->max_page_list_len * sizeof(u64);
-
- dma_free_coherent(&dev->mdev->pdev->dev, size, mfrpl->mapped_page_list,
- mfrpl->map);
- kfree(mfrpl->ibfrpl.page_list);
- kfree(mfrpl);
-}
-
int mlx5_ib_check_mr_status(struct ib_mr *ibmr, u32 check_mask,
struct ib_mr_status *mr_status)
{
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index da2b46c2624a..307bdbca8938 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -64,7 +64,6 @@ static const u32 mlx5_ib_opcode[] = {
[IB_WR_ATOMIC_FETCH_AND_ADD] = MLX5_OPCODE_ATOMIC_FA,
[IB_WR_SEND_WITH_INV] = MLX5_OPCODE_SEND_INVAL,
[IB_WR_LOCAL_INV] = MLX5_OPCODE_UMR,
- [IB_WR_FAST_REG_MR] = MLX5_OPCODE_UMR,
[IB_WR_REG_MR] = MLX5_OPCODE_UMR,
[IB_WR_MASKED_ATOMIC_CMP_AND_SWP] = MLX5_OPCODE_ATOMIC_MASKED_CS,
[IB_WR_MASKED_ATOMIC_FETCH_AND_ADD] = MLX5_OPCODE_ATOMIC_MASKED_FA,
@@ -1908,20 +1907,11 @@ static void set_reg_umr_seg(struct mlx5_wqe_umr_ctrl_seg *umr,
umr->mkey_mask = frwr_mkey_mask();
}
-static void set_frwr_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
- struct ib_send_wr *wr, int li)
+static void set_linv_umr_seg(struct mlx5_wqe_umr_ctrl_seg *umr)
{
memset(umr, 0, sizeof(*umr));
-
- if (li) {
- umr->mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE);
- umr->flags = 1 << 7;
- return;
- }
-
- umr->flags = (1 << 5); /* fail if not free */
- umr->klm_octowords = get_klm_octo(fast_reg_wr(wr)->page_list_len);
- umr->mkey_mask = frwr_mkey_mask();
+ umr->mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE);
+ umr->flags = 1 << 7;
}
static __be64 get_umr_reg_mr_mask(void)
@@ -2015,24 +2005,10 @@ static void set_reg_mkey_seg(struct mlx5_mkey_seg *seg,
seg->log2_page_size = ilog2(mr->ibmr.page_size);
}
-static void set_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *wr,
- int li, int *writ)
+static void set_linv_mkey_seg(struct mlx5_mkey_seg *seg)
{
memset(seg, 0, sizeof(*seg));
- if (li) {
- seg->status = MLX5_MKEY_STATUS_FREE;
- return;
- }
-
- seg->flags = get_umr_flags(fast_reg_wr(wr)->access_flags) |
- MLX5_ACCESS_MODE_MTT;
- *writ = seg->flags & (MLX5_PERM_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE);
- seg->qpn_mkey7_0 = cpu_to_be32((fast_reg_wr(wr)->rkey & 0xff) | 0xffffff00);
- seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL);
- seg->start_addr = cpu_to_be64(fast_reg_wr(wr)->iova_start);
- seg->len = cpu_to_be64(fast_reg_wr(wr)->length);
- seg->xlt_oct_size = cpu_to_be32((fast_reg_wr(wr)->page_list_len + 1) / 2);
- seg->log2_page_size = fast_reg_wr(wr)->page_shift;
+ seg->status = MLX5_MKEY_STATUS_FREE;
}
static void set_reg_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *wr)
@@ -2067,24 +2043,6 @@ static void set_reg_data_seg(struct mlx5_wqe_data_seg *dseg,
dseg->lkey = cpu_to_be32(pd->ibpd.local_dma_lkey);
}
-static void set_frwr_pages(struct mlx5_wqe_data_seg *dseg,
- struct ib_send_wr *wr,
- struct mlx5_core_dev *mdev,
- struct mlx5_ib_pd *pd,
- int writ)
-{
- struct mlx5_ib_fast_reg_page_list *mfrpl = to_mfrpl(fast_reg_wr(wr)->page_list);
- u64 *page_list = fast_reg_wr(wr)->page_list->page_list;
- u64 perm = MLX5_EN_RD | (writ ? MLX5_EN_WR : 0);
- int i;
-
- for (i = 0; i < fast_reg_wr(wr)->page_list_len; i++)
- mfrpl->mapped_page_list[i] = cpu_to_be64(page_list[i] | perm);
- dseg->addr = cpu_to_be64(mfrpl->map);
- dseg->byte_count = cpu_to_be32(ALIGN(sizeof(u64) * fast_reg_wr(wr)->page_list_len, 64));
- dseg->lkey = cpu_to_be32(pd->ibpd.local_dma_lkey);
-}
-
static __be32 send_ieth(struct ib_send_wr *wr)
{
switch (wr->opcode) {
@@ -2504,36 +2462,18 @@ static int set_reg_wr(struct mlx5_ib_qp *qp,
return 0;
}
-static int set_frwr_li_wr(void **seg, struct ib_send_wr *wr, int *size,
- struct mlx5_core_dev *mdev, struct mlx5_ib_pd *pd, struct mlx5_ib_qp *qp)
+static void set_linv_wr(struct mlx5_ib_qp *qp, void **seg, int *size)
{
- int writ = 0;
- int li;
-
- li = wr->opcode == IB_WR_LOCAL_INV ? 1 : 0;
- if (unlikely(wr->send_flags & IB_SEND_INLINE))
- return -EINVAL;
-
- set_frwr_umr_segment(*seg, wr, li);
+ set_linv_umr_seg(*seg);
*seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
*size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
if (unlikely((*seg == qp->sq.qend)))
*seg = mlx5_get_send_wqe(qp, 0);
- set_mkey_segment(*seg, wr, li, &writ);
+ set_linv_mkey_seg(*seg);
*seg += sizeof(struct mlx5_mkey_seg);
*size += sizeof(struct mlx5_mkey_seg) / 16;
if (unlikely((*seg == qp->sq.qend)))
*seg = mlx5_get_send_wqe(qp, 0);
- if (!li) {
- if (unlikely(fast_reg_wr(wr)->page_list_len >
- fast_reg_wr(wr)->page_list->max_page_list_len))
- return -ENOMEM;
-
- set_frwr_pages(*seg, wr, mdev, pd, writ);
- *seg += sizeof(struct mlx5_wqe_data_seg);
- *size += (sizeof(struct mlx5_wqe_data_seg) / 16);
- }
- return 0;
}
static void dump_wqe(struct mlx5_ib_qp *qp, int idx, int size_16)
@@ -2649,7 +2589,6 @@ int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
{
struct mlx5_wqe_ctrl_seg *ctrl = NULL; /* compiler warning */
struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
- struct mlx5_core_dev *mdev = dev->mdev;
struct mlx5_ib_qp *qp = to_mqp(ibqp);
struct mlx5_ib_mr *mr;
struct mlx5_wqe_data_seg *dpseg;
@@ -2724,25 +2663,7 @@ int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
qp->sq.wr_data[idx] = IB_WR_LOCAL_INV;
ctrl->imm = cpu_to_be32(wr->ex.invalidate_rkey);
- err = set_frwr_li_wr(&seg, wr, &size, mdev, to_mpd(ibqp->pd), qp);
- if (err) {
- mlx5_ib_warn(dev, "\n");
- *bad_wr = wr;
- goto out;
- }
- num_sge = 0;
- break;
-
- case IB_WR_FAST_REG_MR:
- next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
- qp->sq.wr_data[idx] = IB_WR_FAST_REG_MR;
- ctrl->imm = cpu_to_be32(fast_reg_wr(wr)->rkey);
- err = set_frwr_li_wr(&seg, wr, &size, mdev, to_mpd(ibqp->pd), qp);
- if (err) {
- mlx5_ib_warn(dev, "\n");
- *bad_wr = wr;
- goto out;
- }
+ set_linv_wr(qp, &seg, &size);
num_sge = 0;
break;
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 20/26] IB/mlx4: Remove old FRWR API support
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (18 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 19/26] IB/mlx5: Remove old FRWR API support Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 21/26] RDMA/ocrdma: Remove old FRWR API Sagi Grimberg
` (6 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
No ULP uses it anymore, go ahead and remove it.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/hw/mlx4/cq.c | 3 +--
drivers/infiniband/hw/mlx4/main.c | 2 --
drivers/infiniband/hw/mlx4/mlx4_ib.h | 15 -----------
drivers/infiniband/hw/mlx4/mr.c | 48 ------------------------------------
drivers/infiniband/hw/mlx4/qp.c | 31 -----------------------
5 files changed, 1 insertion(+), 98 deletions(-)
diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c
index 2ea4125b7903..b88fc8f5ab18 100644
--- a/drivers/infiniband/hw/mlx4/cq.c
+++ b/drivers/infiniband/hw/mlx4/cq.c
@@ -818,8 +818,7 @@ repoll:
wc->opcode = IB_WC_LSO;
break;
case MLX4_OPCODE_FMR:
- wc->opcode = IB_WC_FAST_REG_MR;
- /* TODO: wc->opcode = IB_WC_REG_MR; */
+ wc->opcode = IB_WC_REG_MR;
break;
case MLX4_OPCODE_LOCAL_INVAL:
wc->opcode = IB_WC_LOCAL_INV;
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 19191ac0783c..0d7698e11329 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -2250,8 +2250,6 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr;
ibdev->ib_dev.alloc_mr = mlx4_ib_alloc_mr;
ibdev->ib_dev.map_mr_sg = mlx4_ib_map_mr_sg;
- ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
- ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list;
ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach;
ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach;
ibdev->ib_dev.process_mad = mlx4_ib_process_mad;
diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h
index 0f2ce20bd359..d757fbe7d533 100644
--- a/drivers/infiniband/hw/mlx4/mlx4_ib.h
+++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h
@@ -147,12 +147,6 @@ struct mlx4_ib_mw {
struct mlx4_mw mmw;
};
-struct mlx4_ib_fast_reg_page_list {
- struct ib_fast_reg_page_list ibfrpl;
- __be64 *mapped_page_list;
- dma_addr_t map;
-};
-
struct mlx4_ib_fmr {
struct ib_fmr ibfmr;
struct mlx4_fmr mfmr;
@@ -645,11 +639,6 @@ static inline struct mlx4_ib_mw *to_mmw(struct ib_mw *ibmw)
return container_of(ibmw, struct mlx4_ib_mw, ibmw);
}
-static inline struct mlx4_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
-{
- return container_of(ibfrpl, struct mlx4_ib_fast_reg_page_list, ibfrpl);
-}
-
static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
{
return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
@@ -716,10 +705,6 @@ struct ib_mr *mlx4_ib_alloc_mr(struct ib_pd *pd,
int mlx4_ib_map_mr_sg(struct ib_mr *ibmr,
struct scatterlist *sg,
int sg_nents);
-struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
- int page_list_len);
-void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
-
int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev,
diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c
index e5a32e4520e8..4d1e1c632603 100644
--- a/drivers/infiniband/hw/mlx4/mr.c
+++ b/drivers/infiniband/hw/mlx4/mr.c
@@ -443,54 +443,6 @@ err_free:
return ERR_PTR(err);
}
-struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
- int page_list_len)
-{
- struct mlx4_ib_dev *dev = to_mdev(ibdev);
- struct mlx4_ib_fast_reg_page_list *mfrpl;
- int size = page_list_len * sizeof (u64);
-
- if (page_list_len > MLX4_MAX_FAST_REG_PAGES)
- return ERR_PTR(-EINVAL);
-
- mfrpl = kmalloc(sizeof *mfrpl, GFP_KERNEL);
- if (!mfrpl)
- return ERR_PTR(-ENOMEM);
-
- mfrpl->ibfrpl.page_list = kmalloc(size, GFP_KERNEL);
- if (!mfrpl->ibfrpl.page_list)
- goto err_free;
-
- mfrpl->mapped_page_list = dma_alloc_coherent(&dev->dev->persist->
- pdev->dev,
- size, &mfrpl->map,
- GFP_KERNEL);
- if (!mfrpl->mapped_page_list)
- goto err_free;
-
- WARN_ON(mfrpl->map & 0x3f);
-
- return &mfrpl->ibfrpl;
-
-err_free:
- kfree(mfrpl->ibfrpl.page_list);
- kfree(mfrpl);
- return ERR_PTR(-ENOMEM);
-}
-
-void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
-{
- struct mlx4_ib_dev *dev = to_mdev(page_list->device);
- struct mlx4_ib_fast_reg_page_list *mfrpl = to_mfrpl(page_list);
- int size = page_list->max_page_list_len * sizeof (u64);
-
- dma_free_coherent(&dev->dev->persist->pdev->dev, size,
- mfrpl->mapped_page_list,
- mfrpl->map);
- kfree(mfrpl->ibfrpl.page_list);
- kfree(mfrpl);
-}
-
struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int acc,
struct ib_fmr_attr *fmr_attr)
{
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index 850d4e9c13c5..b88a2b78ee88 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -111,7 +111,6 @@ static const __be32 mlx4_ib_opcode[] = {
[IB_WR_ATOMIC_FETCH_AND_ADD] = cpu_to_be32(MLX4_OPCODE_ATOMIC_FA),
[IB_WR_SEND_WITH_INV] = cpu_to_be32(MLX4_OPCODE_SEND_INVAL),
[IB_WR_LOCAL_INV] = cpu_to_be32(MLX4_OPCODE_LOCAL_INVAL),
- [IB_WR_FAST_REG_MR] = cpu_to_be32(MLX4_OPCODE_FMR),
[IB_WR_REG_MR] = cpu_to_be32(MLX4_OPCODE_FMR),
[IB_WR_MASKED_ATOMIC_CMP_AND_SWP] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_CS),
[IB_WR_MASKED_ATOMIC_FETCH_AND_ADD] = cpu_to_be32(MLX4_OPCODE_MASKED_ATOMIC_FA),
@@ -2422,28 +2421,6 @@ static void set_reg_seg(struct mlx4_wqe_fmr_seg *fseg,
fseg->reserved[1] = 0;
}
-static void set_fmr_seg(struct mlx4_wqe_fmr_seg *fseg,
- struct ib_fast_reg_wr *wr)
-{
- struct mlx4_ib_fast_reg_page_list *mfrpl = to_mfrpl(wr->page_list);
- int i;
-
- for (i = 0; i < wr->page_list_len; ++i)
- mfrpl->mapped_page_list[i] =
- cpu_to_be64(wr->page_list->page_list[i] |
- MLX4_MTT_FLAG_PRESENT);
-
- fseg->flags = convert_access(wr->access_flags);
- fseg->mem_key = cpu_to_be32(wr->rkey);
- fseg->buf_list = cpu_to_be64(mfrpl->map);
- fseg->start_addr = cpu_to_be64(wr->iova_start);
- fseg->reg_len = cpu_to_be64(wr->length);
- fseg->offset = 0; /* XXX -- is this just for ZBVA? */
- fseg->page_size = cpu_to_be32(wr->page_shift);
- fseg->reserved[0] = 0;
- fseg->reserved[1] = 0;
-}
-
static void set_bind_seg(struct mlx4_wqe_bind_seg *bseg,
struct ib_bind_mw_wr *wr)
{
@@ -2775,14 +2752,6 @@ int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
size += sizeof (struct mlx4_wqe_local_inval_seg) / 16;
break;
- case IB_WR_FAST_REG_MR:
- ctrl->srcrb_flags |=
- cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER);
- set_fmr_seg(wqe, fast_reg_wr(wr));
- wqe += sizeof (struct mlx4_wqe_fmr_seg);
- size += sizeof (struct mlx4_wqe_fmr_seg) / 16;
- break;
-
case IB_WR_REG_MR:
ctrl->srcrb_flags |=
cpu_to_be32(MLX4_WQE_CTRL_STRONG_ORDER);
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 21/26] RDMA/ocrdma: Remove old FRWR API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (19 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 20/26] IB/mlx4: " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 22/26] RDMA/cxgb3: " Sagi Grimberg
` (5 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
No ULP uses it anymore, go ahead and remove it.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/hw/ocrdma/ocrdma_main.c | 2 -
drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 104 +---------------------------
drivers/infiniband/hw/ocrdma/ocrdma_verbs.h | 4 --
3 files changed, 1 insertion(+), 109 deletions(-)
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_main.c b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
index 874beb4b07a1..9bf430ef8eb6 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_main.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
@@ -183,8 +183,6 @@ static int ocrdma_register_device(struct ocrdma_dev *dev)
dev->ibdev.alloc_mr = ocrdma_alloc_mr;
dev->ibdev.map_mr_sg = ocrdma_map_mr_sg;
- dev->ibdev.alloc_fast_reg_page_list = ocrdma_alloc_frmr_page_list;
- dev->ibdev.free_fast_reg_page_list = ocrdma_free_frmr_page_list;
/* mandatory to support user space verbs consumer. */
dev->ibdev.alloc_ucontext = ocrdma_alloc_ucontext;
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
index 3c277c81456a..86d34d7a5d88 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
@@ -2133,41 +2133,6 @@ static void ocrdma_build_read(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr,
ext_rw->len = hdr->total_len;
}
-static void build_frmr_pbes(struct ib_fast_reg_wr *wr,
- struct ocrdma_pbl *pbl_tbl,
- struct ocrdma_hw_mr *hwmr)
-{
- int i;
- u64 buf_addr = 0;
- int num_pbes;
- struct ocrdma_pbe *pbe;
-
- pbe = (struct ocrdma_pbe *)pbl_tbl->va;
- num_pbes = 0;
-
- /* go through the OS phy regions & fill hw pbe entries into pbls. */
- for (i = 0; i < wr->page_list_len; i++) {
- /* number of pbes can be more for one OS buf, when
- * buffers are of different sizes.
- * split the ib_buf to one or more pbes.
- */
- buf_addr = wr->page_list->page_list[i];
- pbe->pa_lo = cpu_to_le32((u32) (buf_addr & PAGE_MASK));
- pbe->pa_hi = cpu_to_le32((u32) upper_32_bits(buf_addr));
- num_pbes += 1;
- pbe++;
-
- /* if the pbl is full storing the pbes,
- * move to next pbl.
- */
- if (num_pbes == (hwmr->pbl_size/sizeof(u64))) {
- pbl_tbl++;
- pbe = (struct ocrdma_pbe *)pbl_tbl->va;
- }
- }
- return;
-}
-
static int get_encoded_page_size(int pg_sz)
{
/* Max size is 256M 4096 << 16 */
@@ -2234,50 +2199,6 @@ static int ocrdma_build_reg(struct ocrdma_qp *qp,
return 0;
}
-static int ocrdma_build_fr(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr,
- struct ib_send_wr *send_wr)
-{
- u64 fbo;
- struct ib_fast_reg_wr *wr = fast_reg_wr(send_wr);
- struct ocrdma_ewqe_fr *fast_reg = (struct ocrdma_ewqe_fr *)(hdr + 1);
- struct ocrdma_mr *mr;
- struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
- u32 wqe_size = sizeof(*fast_reg) + sizeof(*hdr);
-
- wqe_size = roundup(wqe_size, OCRDMA_WQE_ALIGN_BYTES);
-
- if (wr->page_list_len > dev->attr.max_pages_per_frmr)
- return -EINVAL;
-
- hdr->cw |= (OCRDMA_FR_MR << OCRDMA_WQE_OPCODE_SHIFT);
- hdr->cw |= ((wqe_size / OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT);
-
- if (wr->page_list_len == 0)
- BUG();
- if (wr->access_flags & IB_ACCESS_LOCAL_WRITE)
- hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_LOCAL_WR;
- if (wr->access_flags & IB_ACCESS_REMOTE_WRITE)
- hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_REMOTE_WR;
- if (wr->access_flags & IB_ACCESS_REMOTE_READ)
- hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_REMOTE_RD;
- hdr->lkey = wr->rkey;
- hdr->total_len = wr->length;
-
- fbo = wr->iova_start - (wr->page_list->page_list[0] & PAGE_MASK);
-
- fast_reg->va_hi = upper_32_bits(wr->iova_start);
- fast_reg->va_lo = (u32) (wr->iova_start & 0xffffffff);
- fast_reg->fbo_hi = upper_32_bits(fbo);
- fast_reg->fbo_lo = (u32) fbo & 0xffffffff;
- fast_reg->num_sges = wr->page_list_len;
- fast_reg->size_sge =
- get_encoded_page_size(1 << wr->page_shift);
- mr = (struct ocrdma_mr *) (unsigned long)
- dev->stag_arr[(hdr->lkey >> 8) & (OCRDMA_MAX_STAG - 1)];
- build_frmr_pbes(wr, mr->hwmr.pbl_table, &mr->hwmr);
- return 0;
-}
-
static void ocrdma_ring_sq_db(struct ocrdma_qp *qp)
{
u32 val = qp->sq.dbid | (1 << OCRDMA_DB_SQ_SHIFT);
@@ -2357,9 +2278,6 @@ int ocrdma_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT;
hdr->lkey = wr->ex.invalidate_rkey;
break;
- case IB_WR_FAST_REG_MR:
- status = ocrdma_build_fr(qp, hdr, wr);
- break;
case IB_WR_REG_MR:
status = ocrdma_build_reg(qp, hdr, reg_wr(wr));
break;
@@ -2627,7 +2545,7 @@ static void ocrdma_update_wc(struct ocrdma_qp *qp, struct ib_wc *ibwc,
ibwc->opcode = IB_WC_SEND;
break;
case OCRDMA_FR_MR:
- ibwc->opcode = IB_WC_FAST_REG_MR;
+ ibwc->opcode = IB_WC_REG_MR;
break;
case OCRDMA_LKEY_INV:
ibwc->opcode = IB_WC_LOCAL_INV;
@@ -3153,26 +3071,6 @@ pl_err:
return ERR_PTR(-ENOMEM);
}
-struct ib_fast_reg_page_list *ocrdma_alloc_frmr_page_list(struct ib_device
- *ibdev,
- int page_list_len)
-{
- struct ib_fast_reg_page_list *frmr_list;
- int size;
-
- size = sizeof(*frmr_list) + (page_list_len * sizeof(u64));
- frmr_list = kzalloc(size, GFP_KERNEL);
- if (!frmr_list)
- return ERR_PTR(-ENOMEM);
- frmr_list->page_list = (u64 *)(frmr_list + 1);
- return frmr_list;
-}
-
-void ocrdma_free_frmr_page_list(struct ib_fast_reg_page_list *page_list)
-{
- kfree(page_list);
-}
-
#define MAX_KERNEL_PBE_SIZE 65536
static inline int count_kernel_pbes(struct ib_phys_buf *buf_list,
int buf_cnt, u32 *pbe_size)
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h
index 1b2d3ac10203..a2f3b4dc20b0 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.h
@@ -128,9 +128,5 @@ struct ib_mr *ocrdma_alloc_mr(struct ib_pd *pd,
int ocrdma_map_mr_sg(struct ib_mr *ibmr,
struct scatterlist *sg,
int sg_nents);
-struct ib_fast_reg_page_list *ocrdma_alloc_frmr_page_list(struct ib_device
- *ibdev,
- int page_list_len);
-void ocrdma_free_frmr_page_list(struct ib_fast_reg_page_list *page_list);
#endif /* __OCRDMA_VERBS_H__ */
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 22/26] RDMA/cxgb3: Remove old FRWR API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (20 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 21/26] RDMA/ocrdma: Remove old FRWR API Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 23/26] iw_cxgb4: " Sagi Grimberg
` (4 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
No ULP uses it anymore, go ahead and remove it.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/hw/cxgb3/iwch_cq.c | 2 +-
drivers/infiniband/hw/cxgb3/iwch_provider.c | 24 ---------------
drivers/infiniband/hw/cxgb3/iwch_qp.c | 47 -----------------------------
3 files changed, 1 insertion(+), 72 deletions(-)
diff --git a/drivers/infiniband/hw/cxgb3/iwch_cq.c b/drivers/infiniband/hw/cxgb3/iwch_cq.c
index cf5474ae68ff..cfe404925a39 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_cq.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_cq.c
@@ -123,7 +123,7 @@ static int iwch_poll_cq_one(struct iwch_dev *rhp, struct iwch_cq *chp,
wc->opcode = IB_WC_LOCAL_INV;
break;
case T3_FAST_REGISTER:
- wc->opcode = IB_WC_FAST_REG_MR;
+ wc->opcode = IB_WC_REG_MR;
break;
default:
printk(KERN_ERR MOD "Unexpected opcode %d "
diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index f7b915378343..c34725ca0bb4 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -884,28 +884,6 @@ static int iwch_map_mr_sg(struct ib_mr *ibmr,
return ib_sg_to_pages(ibmr, sg, sg_nents, iwch_set_page);
}
-static struct ib_fast_reg_page_list *iwch_alloc_fastreg_pbl(
- struct ib_device *device,
- int page_list_len)
-{
- struct ib_fast_reg_page_list *page_list;
-
- page_list = kmalloc(sizeof *page_list + page_list_len * sizeof(u64),
- GFP_KERNEL);
- if (!page_list)
- return ERR_PTR(-ENOMEM);
-
- page_list->page_list = (u64 *)(page_list + 1);
- page_list->max_page_list_len = page_list_len;
-
- return page_list;
-}
-
-static void iwch_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list)
-{
- kfree(page_list);
-}
-
static int iwch_destroy_qp(struct ib_qp *ib_qp)
{
struct iwch_dev *rhp;
@@ -1483,8 +1461,6 @@ int iwch_register_device(struct iwch_dev *dev)
dev->ibdev.dealloc_mw = iwch_dealloc_mw;
dev->ibdev.alloc_mr = iwch_alloc_mr;
dev->ibdev.map_mr_sg = iwch_map_mr_sg;
- dev->ibdev.alloc_fast_reg_page_list = iwch_alloc_fastreg_pbl;
- dev->ibdev.free_fast_reg_page_list = iwch_free_fastreg_pbl;
dev->ibdev.attach_mcast = iwch_multicast_attach;
dev->ibdev.detach_mcast = iwch_multicast_detach;
dev->ibdev.process_mad = iwch_process_mad;
diff --git a/drivers/infiniband/hw/cxgb3/iwch_qp.c b/drivers/infiniband/hw/cxgb3/iwch_qp.c
index a09ea538e990..d0548fc6395e 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_qp.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_qp.c
@@ -189,48 +189,6 @@ static int build_memreg(union t3_wr *wqe, struct ib_reg_wr *wr,
return 0;
}
-static int build_fastreg(union t3_wr *wqe, struct ib_send_wr *send_wr,
- u8 *flit_cnt, int *wr_cnt, struct t3_wq *wq)
-{
- struct ib_fast_reg_wr *wr = fast_reg_wr(send_wr);
- int i;
- __be64 *p;
-
- if (wr->page_list_len > T3_MAX_FASTREG_DEPTH)
- return -EINVAL;
- *wr_cnt = 1;
- wqe->fastreg.stag = cpu_to_be32(wr->rkey);
- wqe->fastreg.len = cpu_to_be32(wr->length);
- wqe->fastreg.va_base_hi = cpu_to_be32(wr->iova_start >> 32);
- wqe->fastreg.va_base_lo_fbo = cpu_to_be32(wr->iova_start & 0xffffffff);
- wqe->fastreg.page_type_perms = cpu_to_be32(
- V_FR_PAGE_COUNT(wr->page_list_len) |
- V_FR_PAGE_SIZE(wr->page_shift-12) |
- V_FR_TYPE(TPT_VATO) |
- V_FR_PERMS(iwch_ib_to_tpt_access(wr->access_flags)));
- p = &wqe->fastreg.pbl_addrs[0];
- for (i = 0; i < wr->page_list_len; i++, p++) {
-
- /* If we need a 2nd WR, then set it up */
- if (i == T3_MAX_FASTREG_FRAG) {
- *wr_cnt = 2;
- wqe = (union t3_wr *)(wq->queue +
- Q_PTR2IDX((wq->wptr+1), wq->size_log2));
- build_fw_riwrh((void *)wqe, T3_WR_FASTREG, 0,
- Q_GENBIT(wq->wptr + 1, wq->size_log2),
- 0, 1 + wr->page_list_len - T3_MAX_FASTREG_FRAG,
- T3_EOP);
-
- p = &wqe->pbl_frag.pbl_addrs[0];
- }
- *p = cpu_to_be64((u64)wr->page_list->page_list[i]);
- }
- *flit_cnt = 5 + wr->page_list_len;
- if (*flit_cnt > 15)
- *flit_cnt = 15;
- return 0;
-}
-
static int build_inv_stag(union t3_wr *wqe, struct ib_send_wr *wr,
u8 *flit_cnt)
{
@@ -457,11 +415,6 @@ int iwch_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
if (!qhp->wq.oldest_read)
qhp->wq.oldest_read = sqp;
break;
- case IB_WR_FAST_REG_MR:
- t3_wr_opcode = T3_WR_FASTREG;
- err = build_fastreg(wqe, wr, &t3_wr_flit_cnt,
- &wr_cnt, &qhp->wq);
- break;
case IB_WR_REG_MR:
t3_wr_opcode = T3_WR_FASTREG;
err = build_memreg(wqe, reg_wr(wr), &t3_wr_flit_cnt,
--
1.8.4.3
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 23/26] iw_cxgb4: Remove old FRWR API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (21 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 22/26] RDMA/cxgb3: " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 24/26] IB/qib: " Sagi Grimberg
` (3 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
No ULP uses it anymore, go ahead and remove it.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/hw/cxgb4/cq.c | 2 +-
drivers/infiniband/hw/cxgb4/iw_cxgb4.h | 18 --------
drivers/infiniband/hw/cxgb4/mem.c | 45 --------------------
drivers/infiniband/hw/cxgb4/provider.c | 2 -
drivers/infiniband/hw/cxgb4/qp.c | 77 ----------------------------------
5 files changed, 1 insertion(+), 143 deletions(-)
diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c
index 92d518382a9f..de9cd6901752 100644
--- a/drivers/infiniband/hw/cxgb4/cq.c
+++ b/drivers/infiniband/hw/cxgb4/cq.c
@@ -752,7 +752,7 @@ static int c4iw_poll_cq_one(struct c4iw_cq *chp, struct ib_wc *wc)
wc->opcode = IB_WC_LOCAL_INV;
break;
case FW_RI_FAST_REGISTER:
- wc->opcode = IB_WC_FAST_REG_MR;
+ wc->opcode = IB_WC_REG_MR;
break;
default:
printk(KERN_ERR MOD "Unexpected opcode %d "
diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
index 6a8e2696455f..00e55faa086a 100644
--- a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
+++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
@@ -409,20 +409,6 @@ static inline struct c4iw_mw *to_c4iw_mw(struct ib_mw *ibmw)
return container_of(ibmw, struct c4iw_mw, ibmw);
}
-struct c4iw_fr_page_list {
- struct ib_fast_reg_page_list ibpl;
- DEFINE_DMA_UNMAP_ADDR(mapping);
- dma_addr_t dma_addr;
- struct c4iw_dev *dev;
- int pll_len;
-};
-
-static inline struct c4iw_fr_page_list *to_c4iw_fr_page_list(
- struct ib_fast_reg_page_list *ibpl)
-{
- return container_of(ibpl, struct c4iw_fr_page_list, ibpl);
-}
-
struct c4iw_cq {
struct ib_cq ibcq;
struct c4iw_dev *rhp;
@@ -970,10 +956,6 @@ int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len);
void c4iw_qp_add_ref(struct ib_qp *qp);
void c4iw_qp_rem_ref(struct ib_qp *qp);
-void c4iw_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list);
-struct ib_fast_reg_page_list *c4iw_alloc_fastreg_pbl(
- struct ib_device *device,
- int page_list_len);
struct ib_mr *c4iw_alloc_mr(struct ib_pd *pd,
enum ib_mr_type mr_type,
u32 max_num_sg);
diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c
index 96fc02879955..3de8bb3b8329 100644
--- a/drivers/infiniband/hw/cxgb4/mem.c
+++ b/drivers/infiniband/hw/cxgb4/mem.c
@@ -945,51 +945,6 @@ int c4iw_map_mr_sg(struct ib_mr *ibmr,
return ib_sg_to_pages(ibmr, sg, sg_nents, c4iw_set_page);
}
-struct ib_fast_reg_page_list *c4iw_alloc_fastreg_pbl(struct ib_device *device,
- int page_list_len)
-{
- struct c4iw_fr_page_list *c4pl;
- struct c4iw_dev *dev = to_c4iw_dev(device);
- dma_addr_t dma_addr;
- int pll_len = roundup(page_list_len * sizeof(u64), 32);
-
- c4pl = kmalloc(sizeof(*c4pl), GFP_KERNEL);
- if (!c4pl)
- return ERR_PTR(-ENOMEM);
-
- c4pl->ibpl.page_list = dma_alloc_coherent(&dev->rdev.lldi.pdev->dev,
- pll_len, &dma_addr,
- GFP_KERNEL);
- if (!c4pl->ibpl.page_list) {
- kfree(c4pl);
- return ERR_PTR(-ENOMEM);
- }
- dma_unmap_addr_set(c4pl, mapping, dma_addr);
- c4pl->dma_addr = dma_addr;
- c4pl->dev = dev;
- c4pl->pll_len = pll_len;
-
- PDBG("%s c4pl %p pll_len %u page_list %p dma_addr %pad\n",
- __func__, c4pl, c4pl->pll_len, c4pl->ibpl.page_list,
- &c4pl->dma_addr);
-
- return &c4pl->ibpl;
-}
-
-void c4iw_free_fastreg_pbl(struct ib_fast_reg_page_list *ibpl)
-{
- struct c4iw_fr_page_list *c4pl = to_c4iw_fr_page_list(ibpl);
-
- PDBG("%s c4pl %p pll_len %u page_list %p dma_addr %pad\n",
- __func__, c4pl, c4pl->pll_len, c4pl->ibpl.page_list,
- &c4pl->dma_addr);
-
- dma_free_coherent(&c4pl->dev->rdev.lldi.pdev->dev,
- c4pl->pll_len,
- c4pl->ibpl.page_list, dma_unmap_addr(c4pl, mapping));
- kfree(c4pl);
-}
-
int c4iw_dereg_mr(struct ib_mr *ib_mr)
{
struct c4iw_dev *rhp;
diff --git a/drivers/infiniband/hw/cxgb4/provider.c b/drivers/infiniband/hw/cxgb4/provider.c
index 55dedadcffaa..8f115b405d76 100644
--- a/drivers/infiniband/hw/cxgb4/provider.c
+++ b/drivers/infiniband/hw/cxgb4/provider.c
@@ -558,8 +558,6 @@ int c4iw_register_device(struct c4iw_dev *dev)
dev->ibdev.dealloc_mw = c4iw_dealloc_mw;
dev->ibdev.alloc_mr = c4iw_alloc_mr;
dev->ibdev.map_mr_sg = c4iw_map_mr_sg;
- dev->ibdev.alloc_fast_reg_page_list = c4iw_alloc_fastreg_pbl;
- dev->ibdev.free_fast_reg_page_list = c4iw_free_fastreg_pbl;
dev->ibdev.attach_mcast = c4iw_multicast_attach;
dev->ibdev.detach_mcast = c4iw_multicast_detach;
dev->ibdev.process_mad = c4iw_process_mad;
diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index 12a23bc935f3..c7d05a933e2d 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -670,75 +670,6 @@ static int build_memreg(struct t4_sq *sq, union t4_wr *wqe,
return 0;
}
-static int build_fastreg(struct t4_sq *sq, union t4_wr *wqe,
- struct ib_send_wr *send_wr, u8 *len16, u8 t5dev)
-{
- struct ib_fast_reg_wr *wr = fast_reg_wr(send_wr);
-
- struct fw_ri_immd *imdp;
- __be64 *p;
- int i;
- int pbllen = roundup(wr->page_list_len * sizeof(u64), 32);
- int rem;
-
- if (wr->page_list_len > t4_max_fr_depth(use_dsgl))
- return -EINVAL;
-
- wqe->fr.qpbinde_to_dcacpu = 0;
- wqe->fr.pgsz_shift = wr->page_shift - 12;
- wqe->fr.addr_type = FW_RI_VA_BASED_TO;
- wqe->fr.mem_perms = c4iw_ib_to_tpt_access(wr->access_flags);
- wqe->fr.len_hi = 0;
- wqe->fr.len_lo = cpu_to_be32(wr->length);
- wqe->fr.stag = cpu_to_be32(wr->rkey);
- wqe->fr.va_hi = cpu_to_be32(wr->iova_start >> 32);
- wqe->fr.va_lo_fbo = cpu_to_be32(wr->iova_start & 0xffffffff);
-
- if (t5dev && use_dsgl && (pbllen > max_fr_immd)) {
- struct c4iw_fr_page_list *c4pl =
- to_c4iw_fr_page_list(wr->page_list);
- struct fw_ri_dsgl *sglp;
-
- for (i = 0; i < wr->page_list_len; i++) {
- wr->page_list->page_list[i] = (__force u64)
- cpu_to_be64((u64)wr->page_list->page_list[i]);
- }
-
- sglp = (struct fw_ri_dsgl *)(&wqe->fr + 1);
- sglp->op = FW_RI_DATA_DSGL;
- sglp->r1 = 0;
- sglp->nsge = cpu_to_be16(1);
- sglp->addr0 = cpu_to_be64(c4pl->dma_addr);
- sglp->len0 = cpu_to_be32(pbllen);
-
- *len16 = DIV_ROUND_UP(sizeof(wqe->fr) + sizeof(*sglp), 16);
- } else {
- imdp = (struct fw_ri_immd *)(&wqe->fr + 1);
- imdp->op = FW_RI_DATA_IMMD;
- imdp->r1 = 0;
- imdp->r2 = 0;
- imdp->immdlen = cpu_to_be32(pbllen);
- p = (__be64 *)(imdp + 1);
- rem = pbllen;
- for (i = 0; i < wr->page_list_len; i++) {
- *p = cpu_to_be64((u64)wr->page_list->page_list[i]);
- rem -= sizeof(*p);
- if (++p == (__be64 *)&sq->queue[sq->size])
- p = (__be64 *)sq->queue;
- }
- BUG_ON(rem < 0);
- while (rem) {
- *p = 0;
- rem -= sizeof(*p);
- if (++p == (__be64 *)&sq->queue[sq->size])
- p = (__be64 *)sq->queue;
- }
- *len16 = DIV_ROUND_UP(sizeof(wqe->fr) + sizeof(*imdp)
- + pbllen, 16);
- }
- return 0;
-}
-
static int build_inv_stag(union t4_wr *wqe, struct ib_send_wr *wr,
u8 *len16)
{
@@ -875,14 +806,6 @@ int c4iw_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
if (!qhp->wq.sq.oldest_read)
qhp->wq.sq.oldest_read = swsqe;
break;
- case IB_WR_FAST_REG_MR:
- fw_opcode = FW_RI_FR_NSMR_WR;
- swsqe->opcode = FW_RI_FAST_REGISTER;
- err = build_fastreg(&qhp->wq.sq, wqe, wr, &len16,
- is_t5(
- qhp->rhp->rdev.lldi.adapter_type) ?
- 1 : 0);
- break;
case IB_WR_REG_MR:
fw_opcode = FW_RI_FR_NSMR_WR;
swsqe->opcode = FW_RI_FAST_REGISTER;
--
1.8.4.3
--
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the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 24/26] IB/qib: Remove old FRWR API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (22 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 23/26] iw_cxgb4: " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 25/26] RDMA/nes: " Sagi Grimberg
` (2 subsequent siblings)
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
No ULP uses it anymore, go ahead and remove it.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/hw/qib/qib_keys.c | 56 -----------------------------------
drivers/infiniband/hw/qib/qib_mr.c | 32 +-------------------
drivers/infiniband/hw/qib/qib_verbs.c | 8 -----
drivers/infiniband/hw/qib/qib_verbs.h | 7 -----
4 files changed, 1 insertion(+), 102 deletions(-)
diff --git a/drivers/infiniband/hw/qib/qib_keys.c b/drivers/infiniband/hw/qib/qib_keys.c
index 95b8b9110fc6..d725c565518d 100644
--- a/drivers/infiniband/hw/qib/qib_keys.c
+++ b/drivers/infiniband/hw/qib/qib_keys.c
@@ -336,62 +336,6 @@ bail:
}
/*
- * Initialize the memory region specified by the work reqeust.
- */
-int qib_fast_reg_mr(struct qib_qp *qp, struct ib_send_wr *send_wr)
-{
- struct ib_fast_reg_wr *wr = fast_reg_wr(send_wr);
- struct qib_lkey_table *rkt = &to_idev(qp->ibqp.device)->lk_table;
- struct qib_pd *pd = to_ipd(qp->ibqp.pd);
- struct qib_mregion *mr;
- u32 rkey = wr->rkey;
- unsigned i, n, m;
- int ret = -EINVAL;
- unsigned long flags;
- u64 *page_list;
- size_t ps;
-
- spin_lock_irqsave(&rkt->lock, flags);
- if (pd->user || rkey == 0)
- goto bail;
-
- mr = rcu_dereference_protected(
- rkt->table[(rkey >> (32 - ib_qib_lkey_table_size))],
- lockdep_is_held(&rkt->lock));
- if (unlikely(mr == NULL || qp->ibqp.pd != mr->pd))
- goto bail;
-
- if (wr->page_list_len > mr->max_segs)
- goto bail;
-
- ps = 1UL << wr->page_shift;
- if (wr->length > ps * wr->page_list_len)
- goto bail;
-
- mr->user_base = wr->iova_start;
- mr->iova = wr->iova_start;
- mr->lkey = rkey;
- mr->length = wr->length;
- mr->access_flags = wr->access_flags;
- page_list = wr->page_list->page_list;
- m = 0;
- n = 0;
- for (i = 0; i < wr->page_list_len; i++) {
- mr->map[m]->segs[n].vaddr = (void *) page_list[i];
- mr->map[m]->segs[n].length = ps;
- if (++n == QIB_SEGSZ) {
- m++;
- n = 0;
- }
- }
-
- ret = 0;
-bail:
- spin_unlock_irqrestore(&rkt->lock, flags);
- return ret;
-}
-
-/*
* Initialize the memory region specified by the work request.
*/
int qib_reg_mr(struct qib_qp *qp, struct ib_reg_wr *wr)
diff --git a/drivers/infiniband/hw/qib/qib_mr.c b/drivers/infiniband/hw/qib/qib_mr.c
index dcabf1b2e263..294f5c706be9 100644
--- a/drivers/infiniband/hw/qib/qib_mr.c
+++ b/drivers/infiniband/hw/qib/qib_mr.c
@@ -324,7 +324,7 @@ out:
/*
* Allocate a memory region usable with the
- * IB_WR_FAST_REG_MR send work request.
+ * IB_WR_REG_MR send work request.
*
* Return the memory region on success, otherwise return an errno.
*/
@@ -375,36 +375,6 @@ int qib_map_mr_sg(struct ib_mr *ibmr,
return ib_sg_to_pages(ibmr, sg, sg_nents, qib_set_page);
}
-struct ib_fast_reg_page_list *
-qib_alloc_fast_reg_page_list(struct ib_device *ibdev, int page_list_len)
-{
- unsigned size = page_list_len * sizeof(u64);
- struct ib_fast_reg_page_list *pl;
-
- if (size > PAGE_SIZE)
- return ERR_PTR(-EINVAL);
-
- pl = kzalloc(sizeof(*pl), GFP_KERNEL);
- if (!pl)
- return ERR_PTR(-ENOMEM);
-
- pl->page_list = kzalloc(size, GFP_KERNEL);
- if (!pl->page_list)
- goto err_free;
-
- return pl;
-
-err_free:
- kfree(pl);
- return ERR_PTR(-ENOMEM);
-}
-
-void qib_free_fast_reg_page_list(struct ib_fast_reg_page_list *pl)
-{
- kfree(pl->page_list);
- kfree(pl);
-}
-
/**
* qib_alloc_fmr - allocate a fast memory region
* @pd: the protection domain for this memory region
diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
index a1e53d7b662b..de6cb6fcda8d 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/drivers/infiniband/hw/qib/qib_verbs.c
@@ -365,9 +365,6 @@ static int qib_post_one_send(struct qib_qp *qp, struct ib_send_wr *wr,
if (wr->opcode == IB_WR_REG_MR) {
if (qib_reg_mr(qp, reg_wr(wr)))
goto bail_inval;
- } else if (wr->opcode == IB_WR_FAST_REG_MR) {
- if (qib_fast_reg_mr(qp, wr))
- goto bail_inval;
} else if (qp->ibqp.qp_type == IB_QPT_UC) {
if ((unsigned) wr->opcode >= IB_WR_RDMA_READ)
goto bail_inval;
@@ -407,9 +404,6 @@ static int qib_post_one_send(struct qib_qp *qp, struct ib_send_wr *wr,
else if (wr->opcode == IB_WR_REG_MR)
memcpy(&wqe->reg_wr, reg_wr(wr),
sizeof(wqe->reg_wr));
- else if (wr->opcode == IB_WR_FAST_REG_MR)
- memcpy(&wqe->fast_reg_wr, fast_reg_wr(wr),
- sizeof(wqe->fast_reg_wr));
else if (wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
wr->opcode == IB_WR_RDMA_WRITE ||
wr->opcode == IB_WR_RDMA_READ)
@@ -2267,8 +2261,6 @@ int qib_register_ib_device(struct qib_devdata *dd)
ibdev->dereg_mr = qib_dereg_mr;
ibdev->alloc_mr = qib_alloc_mr;
ibdev->map_mr_sg = qib_map_mr_sg;
- ibdev->alloc_fast_reg_page_list = qib_alloc_fast_reg_page_list;
- ibdev->free_fast_reg_page_list = qib_free_fast_reg_page_list;
ibdev->alloc_fmr = qib_alloc_fmr;
ibdev->map_phys_fmr = qib_map_phys_fmr;
ibdev->unmap_fmr = qib_unmap_fmr;
diff --git a/drivers/infiniband/hw/qib/qib_verbs.h b/drivers/infiniband/hw/qib/qib_verbs.h
index 648f6c64f00d..2baf5ad251ed 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.h
+++ b/drivers/infiniband/hw/qib/qib_verbs.h
@@ -344,7 +344,6 @@ struct qib_swqe {
struct ib_send_wr wr; /* don't use wr.sg_list */
struct ib_ud_wr ud_wr;
struct ib_reg_wr reg_wr;
- struct ib_fast_reg_wr fast_reg_wr;
struct ib_rdma_wr rdma_wr;
struct ib_atomic_wr atomic_wr;
};
@@ -1051,12 +1050,6 @@ int qib_map_mr_sg(struct ib_mr *ibmr,
struct scatterlist *sg,
int sg_nents);
-struct ib_fast_reg_page_list *qib_alloc_fast_reg_page_list(
- struct ib_device *ibdev, int page_list_len);
-
-void qib_free_fast_reg_page_list(struct ib_fast_reg_page_list *pl);
-
-int qib_fast_reg_mr(struct qib_qp *qp, struct ib_send_wr *wr);
int qib_reg_mr(struct qib_qp *qp, struct ib_reg_wr *wr);
struct ib_fmr *qib_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 25/26] RDMA/nes: Remove old FRWR API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (23 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 24/26] IB/qib: " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-13 16:11 ` [PATCH v5 26/26] IB/core: Remove old fast registration API Sagi Grimberg
2015-10-20 11:33 ` [PATCH v5 00/26] New " Sagi Grimberg
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
No ULP uses it anymore, go ahead and remove it.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/hw/nes/nes_hw.h | 6 --
drivers/infiniband/hw/nes/nes_verbs.c | 162 +---------------------------------
2 files changed, 1 insertion(+), 167 deletions(-)
diff --git a/drivers/infiniband/hw/nes/nes_hw.h b/drivers/infiniband/hw/nes/nes_hw.h
index d748e4b31b8d..c9080208aad2 100644
--- a/drivers/infiniband/hw/nes/nes_hw.h
+++ b/drivers/infiniband/hw/nes/nes_hw.h
@@ -1200,12 +1200,6 @@ struct nes_fast_mr_wqe_pbl {
dma_addr_t paddr;
};
-struct nes_ib_fast_reg_page_list {
- struct ib_fast_reg_page_list ibfrpl;
- struct nes_fast_mr_wqe_pbl nes_wqe_pbl;
- u64 pbl;
-};
-
struct nes_listener {
struct work_struct work;
struct workqueue_struct *wq;
diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
index dc8a03b0ca0d..137880a19ebe 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -486,76 +486,6 @@ static int nes_map_mr_sg(struct ib_mr *ibmr,
return ib_sg_to_pages(ibmr, sg, sg_nents, nes_set_page);
}
-/*
- * nes_alloc_fast_reg_page_list
- */
-static struct ib_fast_reg_page_list *nes_alloc_fast_reg_page_list(
- struct ib_device *ibdev,
- int page_list_len)
-{
- struct nes_vnic *nesvnic = to_nesvnic(ibdev);
- struct nes_device *nesdev = nesvnic->nesdev;
- struct ib_fast_reg_page_list *pifrpl;
- struct nes_ib_fast_reg_page_list *pnesfrpl;
-
- if (page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
- return ERR_PTR(-E2BIG);
- /*
- * Allocate the ib_fast_reg_page_list structure, the
- * nes_fast_bpl structure, and the PLB table.
- */
- pnesfrpl = kmalloc(sizeof(struct nes_ib_fast_reg_page_list) +
- page_list_len * sizeof(u64), GFP_KERNEL);
-
- if (!pnesfrpl)
- return ERR_PTR(-ENOMEM);
-
- pifrpl = &pnesfrpl->ibfrpl;
- pifrpl->page_list = &pnesfrpl->pbl;
- pifrpl->max_page_list_len = page_list_len;
- /*
- * Allocate the WQE PBL
- */
- pnesfrpl->nes_wqe_pbl.kva = pci_alloc_consistent(nesdev->pcidev,
- page_list_len * sizeof(u64),
- &pnesfrpl->nes_wqe_pbl.paddr);
-
- if (!pnesfrpl->nes_wqe_pbl.kva) {
- kfree(pnesfrpl);
- return ERR_PTR(-ENOMEM);
- }
- nes_debug(NES_DBG_MR, "nes_alloc_fast_reg_pbl: nes_frpl = %p, "
- "ibfrpl = %p, ibfrpl.page_list = %p, pbl.kva = %p, "
- "pbl.paddr = %llx\n", pnesfrpl, &pnesfrpl->ibfrpl,
- pnesfrpl->ibfrpl.page_list, pnesfrpl->nes_wqe_pbl.kva,
- (unsigned long long) pnesfrpl->nes_wqe_pbl.paddr);
-
- return pifrpl;
-}
-
-/*
- * nes_free_fast_reg_page_list
- */
-static void nes_free_fast_reg_page_list(struct ib_fast_reg_page_list *pifrpl)
-{
- struct nes_vnic *nesvnic = to_nesvnic(pifrpl->device);
- struct nes_device *nesdev = nesvnic->nesdev;
- struct nes_ib_fast_reg_page_list *pnesfrpl;
-
- pnesfrpl = container_of(pifrpl, struct nes_ib_fast_reg_page_list, ibfrpl);
- /*
- * Free the WQE PBL.
- */
- pci_free_consistent(nesdev->pcidev,
- pifrpl->max_page_list_len * sizeof(u64),
- pnesfrpl->nes_wqe_pbl.kva,
- pnesfrpl->nes_wqe_pbl.paddr);
- /*
- * Free the PBL structure
- */
- kfree(pnesfrpl);
-}
-
/**
* nes_query_device
*/
@@ -3470,94 +3400,6 @@ static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
ib_wr->ex.invalidate_rkey);
break;
- case IB_WR_FAST_REG_MR:
- {
- int i;
- struct ib_fast_reg_wr *fwr = fast_reg_wr(ib_wr);
- int flags = fwr->access_flags;
- struct nes_ib_fast_reg_page_list *pnesfrpl =
- container_of(fwr->page_list,
- struct nes_ib_fast_reg_page_list,
- ibfrpl);
- u64 *src_page_list = pnesfrpl->ibfrpl.page_list;
- u64 *dst_page_list = pnesfrpl->nes_wqe_pbl.kva;
-
- if (fwr->page_list_len >
- (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
- nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
- err = -EINVAL;
- break;
- }
- wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
- set_wqe_64bit_value(wqe->wqe_words,
- NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
- fwr->iova_start);
- set_wqe_32bit_value(wqe->wqe_words,
- NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
- fwr->length);
- set_wqe_32bit_value(wqe->wqe_words,
- NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
- set_wqe_32bit_value(wqe->wqe_words,
- NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
- fwr->rkey);
- /* Set page size: */
- if (fwr->page_shift == 12) {
- wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
- } else if (fwr->page_shift == 21) {
- wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
- } else {
- nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
- " ib_wr=%u, max=1\n", ib_wr->num_sge);
- err = -EINVAL;
- break;
- }
- /* Set access_flags */
- wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
- if (flags & IB_ACCESS_LOCAL_WRITE)
- wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
-
- if (flags & IB_ACCESS_REMOTE_WRITE)
- wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
-
- if (flags & IB_ACCESS_REMOTE_READ)
- wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
-
- if (flags & IB_ACCESS_MW_BIND)
- wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
-
- /* Fill in PBL info: */
- if (fwr->page_list_len >
- pnesfrpl->ibfrpl.max_page_list_len) {
- nes_debug(NES_DBG_IW_TX, "Invalid page list length,"
- " ib_wr=%p, value=%u, max=%u\n",
- ib_wr, fwr->page_list_len,
- pnesfrpl->ibfrpl.max_page_list_len);
- err = -EINVAL;
- break;
- }
-
- set_wqe_64bit_value(wqe->wqe_words,
- NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
- pnesfrpl->nes_wqe_pbl.paddr);
-
- set_wqe_32bit_value(wqe->wqe_words,
- NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
- fwr->page_list_len * 8);
-
- for (i = 0; i < fwr->page_list_len; i++)
- dst_page_list[i] = cpu_to_le64(src_page_list[i]);
-
- nes_debug(NES_DBG_IW_TX, "SQ_FMR: iova_start: %llx, "
- "length: %d, rkey: %0x, pgl_paddr: %llx, "
- "page_list_len: %u, wqe_misc: %x\n",
- (unsigned long long) fwr->iova_start,
- fwr->length,
- fwr->rkey,
- (unsigned long long) pnesfrpl->nes_wqe_pbl.paddr,
- fwr->page_list_len,
- wqe_misc);
- break;
- }
case IB_WR_REG_MR:
{
struct nes_mr *mr = to_nesmr(reg_wr(ib_wr)->mr);
@@ -3866,7 +3708,7 @@ static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
entry->opcode = IB_WC_LOCAL_INV;
break;
case NES_IWARP_SQ_OP_FAST_REG:
- entry->opcode = IB_WC_FAST_REG_MR;
+ entry->opcode = IB_WC_REG_MR;
break;
}
@@ -4055,8 +3897,6 @@ struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
nesibdev->ibdev.alloc_mr = nes_alloc_mr;
nesibdev->ibdev.map_mr_sg = nes_map_mr_sg;
- nesibdev->ibdev.alloc_fast_reg_page_list = nes_alloc_fast_reg_page_list;
- nesibdev->ibdev.free_fast_reg_page_list = nes_free_fast_reg_page_list;
nesibdev->ibdev.attach_mcast = nes_multicast_attach;
nesibdev->ibdev.detach_mcast = nes_multicast_detach;
--
1.8.4.3
--
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^ permalink raw reply related [flat|nested] 40+ messages in thread* [PATCH v5 26/26] IB/core: Remove old fast registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (24 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 25/26] RDMA/nes: " Sagi Grimberg
@ 2015-10-13 16:11 ` Sagi Grimberg
2015-10-20 11:33 ` [PATCH v5 00/26] New " Sagi Grimberg
26 siblings, 0 replies; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-13 16:11 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
No callers and no providers left, go ahead and remove it.
Signed-off-by: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Acked-by: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
---
drivers/infiniband/core/verbs.c | 25 -------------------
include/rdma/ib_verbs.h | 54 -----------------------------------------
2 files changed, 79 deletions(-)
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 9a4e34bc5ff3..668ecc0618b2 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -1253,31 +1253,6 @@ struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
}
EXPORT_SYMBOL(ib_alloc_mr);
-struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device,
- int max_page_list_len)
-{
- struct ib_fast_reg_page_list *page_list;
-
- if (!device->alloc_fast_reg_page_list)
- return ERR_PTR(-ENOSYS);
-
- page_list = device->alloc_fast_reg_page_list(device, max_page_list_len);
-
- if (!IS_ERR(page_list)) {
- page_list->device = device;
- page_list->max_page_list_len = max_page_list_len;
- }
-
- return page_list;
-}
-EXPORT_SYMBOL(ib_alloc_fast_reg_page_list);
-
-void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
-{
- page_list->device->free_fast_reg_page_list(page_list);
-}
-EXPORT_SYMBOL(ib_free_fast_reg_page_list);
-
/* Memory windows */
struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index bdc86ff6f7a4..a7021a4817fd 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -738,7 +738,6 @@ enum ib_wc_opcode {
IB_WC_BIND_MW,
IB_WC_LSO,
IB_WC_LOCAL_INV,
- IB_WC_FAST_REG_MR,
IB_WC_REG_MR,
IB_WC_MASKED_COMP_SWAP,
IB_WC_MASKED_FETCH_ADD,
@@ -1030,7 +1029,6 @@ enum ib_wr_opcode {
IB_WR_SEND_WITH_INV,
IB_WR_RDMA_READ_WITH_INV,
IB_WR_LOCAL_INV,
- IB_WR_FAST_REG_MR,
IB_WR_REG_MR,
IB_WR_MASKED_ATOMIC_CMP_AND_SWP,
IB_WR_MASKED_ATOMIC_FETCH_AND_ADD,
@@ -1069,12 +1067,6 @@ struct ib_sge {
u32 lkey;
};
-struct ib_fast_reg_page_list {
- struct ib_device *device;
- u64 *page_list;
- unsigned int max_page_list_len;
-};
-
/**
* struct ib_mw_bind_info - Parameters for a memory window bind operation.
* @mr: A memory region to bind the memory window to.
@@ -1148,22 +1140,6 @@ static inline struct ib_ud_wr *ud_wr(struct ib_send_wr *wr)
return container_of(wr, struct ib_ud_wr, wr);
}
-struct ib_fast_reg_wr {
- struct ib_send_wr wr;
- u64 iova_start;
- struct ib_fast_reg_page_list *page_list;
- unsigned int page_shift;
- unsigned int page_list_len;
- u32 length;
- int access_flags;
- u32 rkey;
-};
-
-static inline struct ib_fast_reg_wr *fast_reg_wr(struct ib_send_wr *wr)
-{
- return container_of(wr, struct ib_fast_reg_wr, wr);
-}
-
struct ib_reg_wr {
struct ib_send_wr wr;
struct ib_mr *mr;
@@ -1778,9 +1754,6 @@ struct ib_device {
int (*map_mr_sg)(struct ib_mr *mr,
struct scatterlist *sg,
int sg_nents);
- struct ib_fast_reg_page_list * (*alloc_fast_reg_page_list)(struct ib_device *device,
- int page_list_len);
- void (*free_fast_reg_page_list)(struct ib_fast_reg_page_list *page_list);
int (*rereg_phys_mr)(struct ib_mr *mr,
int mr_rereg_mask,
struct ib_pd *pd,
@@ -2889,33 +2862,6 @@ struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
u32 max_num_sg);
/**
- * ib_alloc_fast_reg_page_list - Allocates a page list array
- * @device - ib device pointer.
- * @page_list_len - size of the page list array to be allocated.
- *
- * This allocates and returns a struct ib_fast_reg_page_list * and a
- * page_list array that is at least page_list_len in size. The actual
- * size is returned in max_page_list_len. The caller is responsible
- * for initializing the contents of the page_list array before posting
- * a send work request with the IB_WC_FAST_REG_MR opcode.
- *
- * The page_list array entries must be translated using one of the
- * ib_dma_*() functions just like the addresses passed to
- * ib_map_phys_fmr(). Once the ib_post_send() is issued, the struct
- * ib_fast_reg_page_list must not be modified by the caller until the
- * IB_WC_FAST_REG_MR work request completes.
- */
-struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(
- struct ib_device *device, int page_list_len);
-
-/**
- * ib_free_fast_reg_page_list - Deallocates a previously allocated
- * page list array.
- * @page_list - struct ib_fast_reg_page_list pointer to be deallocated.
- */
-void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
-
-/**
* ib_update_fast_reg_key - updates the key portion of the fast_reg MR
* R_Key and L_Key.
* @mr - struct ib_mr pointer to be updated.
--
1.8.4.3
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^ permalink raw reply related [flat|nested] 40+ messages in thread* Re: [PATCH v5 00/26] New fast registration API
[not found] ` <1444752709-15429-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
` (25 preceding siblings ...)
2015-10-13 16:11 ` [PATCH v5 26/26] IB/core: Remove old fast registration API Sagi Grimberg
@ 2015-10-20 11:33 ` Sagi Grimberg
[not found] ` <56262676.7000403-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
26 siblings, 1 reply; 40+ messages in thread
From: Sagi Grimberg @ 2015-10-20 11:33 UTC (permalink / raw)
To: Doug Ledford; +Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Doug, are you planning on taking this for 4.4?
I think this set has converged towards inclusion.
Reminder, this series goes on top of Christoph's
wr_cleanup patches and iser bounce buffering cleanup.
Sagi.
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^ permalink raw reply [flat|nested] 40+ messages in thread