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RDMA: Mark if create address handle is in a sleepable context

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Introduce a 'flags' field to create address handle callback and add a flag
that marks whether the callback is executed in an atomic context or not.

This will allow drivers to wait for completion instead of polling for it
when it is allowed.

Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Gal Pressman
2018-12-12 11:09:05 +02:00
committed by Jason Gunthorpe
parent 5dabcd0456
commit b090c4e3a0
30 changed files with 52 additions and 27 deletions
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11
include/rdma/ib_verbs.h
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@@ -2377,7 +2377,7 @@ struct ib_device_ops {
struct ib_udata *udata);
int (*dealloc_pd)(struct ib_pd *pd);
struct ib_ah *(*create_ah)(struct ib_pd *pd,
struct rdma_ah_attr *ah_attr,
struct rdma_ah_attr *ah_attr, u32 flags,
struct ib_udata *udata);
int (*modify_ah)(struct ib_ah *ah, struct rdma_ah_attr *ah_attr);
int (*query_ah)(struct ib_ah *ah, struct rdma_ah_attr *ah_attr);
@@ -3151,15 +3151,22 @@ struct ib_pd *__ib_alloc_pd(struct ib_device *device, unsigned int flags,
__ib_alloc_pd((device), (flags), KBUILD_MODNAME)
void ib_dealloc_pd(struct ib_pd *pd);
enum rdma_create_ah_flags {
/* In a sleepable context */
RDMA_CREATE_AH_SLEEPABLE = BIT(0),
};
/**
* rdma_create_ah - Creates an address handle for the given address vector.
* @pd: The protection domain associated with the address handle.
* @ah_attr: The attributes of the address vector.
* @flags: Create address handle flags (see enum rdma_create_ah_flags).
*
* The address handle is used to reference a local or global destination
* in all UD QP post sends.
*/
struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr);
struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr,
u32 flags);
/**
* rdma_create_user_ah - Creates an address handle for the given address vector.