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-rw-r--r--include/rdma/ib_umem.h25
-rw-r--r--include/rdma/ib_verbs.h65
-rw-r--r--include/rdma/restrack.h4
3 files changed, 88 insertions, 6 deletions
diff --git a/include/rdma/ib_umem.h b/include/rdma/ib_umem.h
index 7dc7b1cc71b5..0a8e092c0ea8 100644
--- a/include/rdma/ib_umem.h
+++ b/include/rdma/ib_umem.h
@@ -52,11 +52,15 @@ static inline int ib_umem_offset(struct ib_umem *umem)
return umem->address & ~PAGE_MASK;
}
+static inline dma_addr_t ib_umem_start_dma_addr(struct ib_umem *umem)
+{
+ return sg_dma_address(umem->sgt_append.sgt.sgl) + ib_umem_offset(umem);
+}
+
static inline unsigned long ib_umem_dma_offset(struct ib_umem *umem,
unsigned long pgsz)
{
- return (sg_dma_address(umem->sgt_append.sgt.sgl) + ib_umem_offset(umem)) &
- (pgsz - 1);
+ return ib_umem_start_dma_addr(umem) & (pgsz - 1);
}
static inline size_t ib_umem_num_dma_blocks(struct ib_umem *umem,
@@ -135,14 +139,27 @@ static inline unsigned long ib_umem_find_best_pgoff(struct ib_umem *umem,
unsigned long pgsz_bitmap,
u64 pgoff_bitmask)
{
- struct scatterlist *sg = umem->sgt_append.sgt.sgl;
dma_addr_t dma_addr;
- dma_addr = sg_dma_address(sg) + (umem->address & ~PAGE_MASK);
+ dma_addr = ib_umem_start_dma_addr(umem);
return ib_umem_find_best_pgsz(umem, pgsz_bitmap,
dma_addr & pgoff_bitmask);
}
+static inline bool ib_umem_is_contiguous(struct ib_umem *umem)
+{
+ dma_addr_t dma_addr;
+ unsigned long pgsz;
+
+ /*
+ * Select the smallest aligned page that can contain the whole umem if
+ * it was contiguous.
+ */
+ dma_addr = ib_umem_start_dma_addr(umem);
+ pgsz = roundup_pow_of_two((dma_addr ^ (umem->length - 1 + dma_addr)) + 1);
+ return !!ib_umem_find_best_pgoff(umem, pgsz, U64_MAX);
+}
+
struct ib_umem_dmabuf *ib_umem_dmabuf_get(struct ib_device *device,
unsigned long offset, size_t size,
int fd, int access,
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index af43a8d2a74a..6139223e92e4 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -42,6 +42,7 @@
#include <rdma/signature.h>
#include <uapi/rdma/rdma_user_ioctl.h>
#include <uapi/rdma/ib_user_ioctl_verbs.h>
+#include <linux/pci-tph.h>
#define IB_FW_VERSION_NAME_MAX ETHTOOL_FWVERS_LEN
@@ -1846,6 +1847,27 @@ struct ib_dm {
atomic_t usecnt;
};
+/* bit values to mark existence of ib_dmah fields */
+enum {
+ IB_DMAH_CPU_ID_EXISTS,
+ IB_DMAH_MEM_TYPE_EXISTS,
+ IB_DMAH_PH_EXISTS,
+};
+
+struct ib_dmah {
+ struct ib_device *device;
+ struct ib_uobject *uobject;
+ /*
+ * Implementation details of the RDMA core, don't use in drivers:
+ */
+ struct rdma_restrack_entry res;
+ u32 cpu_id;
+ enum tph_mem_type mem_type;
+ atomic_t usecnt;
+ u8 ph;
+ u8 valid_fields; /* use IB_DMAH_XXX_EXISTS */
+};
+
struct ib_mr {
struct ib_device *device;
struct ib_pd *pd;
@@ -1863,6 +1885,7 @@ struct ib_mr {
struct ib_dm *dm;
struct ib_sig_attrs *sig_attrs; /* only for IB_MR_TYPE_INTEGRITY MRs */
+ struct ib_dmah *dmah;
/*
* Implementation details of the RDMA core, don't use in drivers:
*/
@@ -2486,16 +2509,31 @@ struct ib_device_ops {
int (*destroy_qp)(struct ib_qp *qp, struct ib_udata *udata);
int (*create_cq)(struct ib_cq *cq, const struct ib_cq_init_attr *attr,
struct uverbs_attr_bundle *attrs);
+ int (*create_cq_umem)(struct ib_cq *cq,
+ const struct ib_cq_init_attr *attr,
+ struct ib_umem *umem,
+ struct uverbs_attr_bundle *attrs);
int (*modify_cq)(struct ib_cq *cq, u16 cq_count, u16 cq_period);
int (*destroy_cq)(struct ib_cq *cq, struct ib_udata *udata);
int (*resize_cq)(struct ib_cq *cq, int cqe, struct ib_udata *udata);
+ /**
+ * pre_destroy_cq - Prevent a cq from generating any new work
+ * completions, but not free any kernel resources
+ */
+ int (*pre_destroy_cq)(struct ib_cq *cq);
+ /**
+ * post_destroy_cq - Free all kernel resources
+ */
+ void (*post_destroy_cq)(struct ib_cq *cq);
struct ib_mr *(*get_dma_mr)(struct ib_pd *pd, int mr_access_flags);
struct ib_mr *(*reg_user_mr)(struct ib_pd *pd, u64 start, u64 length,
u64 virt_addr, int mr_access_flags,
+ struct ib_dmah *dmah,
struct ib_udata *udata);
struct ib_mr *(*reg_user_mr_dmabuf)(struct ib_pd *pd, u64 offset,
u64 length, u64 virt_addr, int fd,
int mr_access_flags,
+ struct ib_dmah *dmah,
struct uverbs_attr_bundle *attrs);
struct ib_mr *(*rereg_user_mr)(struct ib_mr *mr, int flags, u64 start,
u64 length, u64 virt_addr,
@@ -2560,6 +2598,9 @@ struct ib_device_ops {
struct ib_dm_alloc_attr *attr,
struct uverbs_attr_bundle *attrs);
int (*dealloc_dm)(struct ib_dm *dm, struct uverbs_attr_bundle *attrs);
+ int (*alloc_dmah)(struct ib_dmah *ibdmah,
+ struct uverbs_attr_bundle *attrs);
+ int (*dealloc_dmah)(struct ib_dmah *dmah, struct uverbs_attr_bundle *attrs);
struct ib_mr *(*reg_dm_mr)(struct ib_pd *pd, struct ib_dm *dm,
struct ib_dm_mr_attr *attr,
struct uverbs_attr_bundle *attrs);
@@ -2717,6 +2758,7 @@ struct ib_device_ops {
DECLARE_RDMA_OBJ_SIZE(ib_ah);
DECLARE_RDMA_OBJ_SIZE(ib_counters);
DECLARE_RDMA_OBJ_SIZE(ib_cq);
+ DECLARE_RDMA_OBJ_SIZE(ib_dmah);
DECLARE_RDMA_OBJ_SIZE(ib_mw);
DECLARE_RDMA_OBJ_SIZE(ib_pd);
DECLARE_RDMA_OBJ_SIZE(ib_qp);
@@ -2905,11 +2947,18 @@ struct ib_block_iter {
unsigned int __pg_bit; /* alignment of current block */
};
-struct ib_device *_ib_alloc_device(size_t size);
+struct ib_device *_ib_alloc_device(size_t size, struct net *net);
#define ib_alloc_device(drv_struct, member) \
container_of(_ib_alloc_device(sizeof(struct drv_struct) + \
BUILD_BUG_ON_ZERO(offsetof( \
- struct drv_struct, member))), \
+ struct drv_struct, member)), \
+ &init_net), \
+ struct drv_struct, member)
+
+#define ib_alloc_device_with_net(drv_struct, member, net) \
+ container_of(_ib_alloc_device(sizeof(struct drv_struct) + \
+ BUILD_BUG_ON_ZERO(offsetof( \
+ struct drv_struct, member)), net), \
struct drv_struct, member)
void ib_dealloc_device(struct ib_device *device);
@@ -4794,11 +4843,17 @@ struct ib_ucontext *ib_uverbs_get_ucontext_file(struct ib_uverbs_file *ufile);
#if IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)
int uverbs_destroy_def_handler(struct uverbs_attr_bundle *attrs);
+bool rdma_uattrs_has_raw_cap(const struct uverbs_attr_bundle *attrs);
#else
static inline int uverbs_destroy_def_handler(struct uverbs_attr_bundle *attrs)
{
return 0;
}
+static inline bool
+rdma_uattrs_has_raw_cap(const struct uverbs_attr_bundle *attrs)
+{
+ return false;
+}
#endif
struct net_device *rdma_alloc_netdev(struct ib_device *device, u32 port_num,
@@ -4855,6 +4910,12 @@ static inline int ibdev_to_node(struct ib_device *ibdev)
bool rdma_dev_access_netns(const struct ib_device *device,
const struct net *net);
+bool rdma_dev_has_raw_cap(const struct ib_device *dev);
+static inline struct net *rdma_dev_net(struct ib_device *device)
+{
+ return read_pnet(&device->coredev.rdma_net);
+}
+
#define IB_ROCE_UDP_ENCAP_VALID_PORT_MIN (0xC000)
#define IB_ROCE_UDP_ENCAP_VALID_PORT_MAX (0xFFFF)
#define IB_GRH_FLOWLABEL_MASK (0x000FFFFF)
diff --git a/include/rdma/restrack.h b/include/rdma/restrack.h
index 0d69ded73bf2..8a9bcf77dace 100644
--- a/include/rdma/restrack.h
+++ b/include/rdma/restrack.h
@@ -57,6 +57,10 @@ enum rdma_restrack_type {
*/
RDMA_RESTRACK_SRQ,
/**
+ * @RDMA_RESTRACK_DMAH: DMA handle
+ */
+ RDMA_RESTRACK_DMAH,
+ /**
* @RDMA_RESTRACK_MAX: Last entry, used for array dclarations
*/
RDMA_RESTRACK_MAX
generated by cgit (git 2.34.1) at 2025-08-03 14:32:40 +0000