RDMA/vmw_pvrdma: Add shared receive queue support
Add the required functions needed to support SRQs. Currently, kernel
clients are not supported. SRQs will only be available in userspace.
Reviewed-by: Adit Ranadive <aditr@vmware.com>
Reviewed-by: Aditya Sarwade <asarwade@vmware.com>
Reviewed-by: Jorgen Hansen <jhansen@vmware.com>
Reviewed-by: Nitish Bhat <bnitish@vmware.com>
Signed-off-by: Bryan Tan <bryantan@vmware.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/hw/vmw_pvrdma/pvrdma.h b/drivers/infiniband/hw/vmw_pvrdma/pvrdma.h
index 984aa34..63bc2ef 100644
--- a/drivers/infiniband/hw/vmw_pvrdma/pvrdma.h
+++ b/drivers/infiniband/hw/vmw_pvrdma/pvrdma.h
@@ -162,6 +162,22 @@ struct pvrdma_ah {
struct pvrdma_av av;
};
+struct pvrdma_srq {
+ struct ib_srq ibsrq;
+ int offset;
+ spinlock_t lock; /* SRQ lock. */
+ int wqe_cnt;
+ int wqe_size;
+ int max_gs;
+ struct ib_umem *umem;
+ struct pvrdma_ring_state *ring;
+ struct pvrdma_page_dir pdir;
+ u32 srq_handle;
+ int npages;
+ refcount_t refcnt;
+ wait_queue_head_t wait;
+};
+
struct pvrdma_qp {
struct ib_qp ibqp;
u32 qp_handle;
@@ -171,6 +187,7 @@ struct pvrdma_qp {
struct ib_umem *rumem;
struct ib_umem *sumem;
struct pvrdma_page_dir pdir;
+ struct pvrdma_srq *srq;
int npages;
int npages_send;
int npages_recv;
@@ -210,6 +227,8 @@ struct pvrdma_dev {
struct pvrdma_page_dir cq_pdir;
struct pvrdma_cq **cq_tbl;
spinlock_t cq_tbl_lock;
+ struct pvrdma_srq **srq_tbl;
+ spinlock_t srq_tbl_lock;
struct pvrdma_qp **qp_tbl;
spinlock_t qp_tbl_lock;
struct pvrdma_uar_table uar_table;
@@ -221,6 +240,7 @@ struct pvrdma_dev {
bool ib_active;
atomic_t num_qps;
atomic_t num_cqs;
+ atomic_t num_srqs;
atomic_t num_pds;
atomic_t num_ahs;
@@ -256,6 +276,11 @@ static inline struct pvrdma_cq *to_vcq(struct ib_cq *ibcq)
return container_of(ibcq, struct pvrdma_cq, ibcq);
}
+static inline struct pvrdma_srq *to_vsrq(struct ib_srq *ibsrq)
+{
+ return container_of(ibsrq, struct pvrdma_srq, ibsrq);
+}
+
static inline struct pvrdma_user_mr *to_vmr(struct ib_mr *ibmr)
{
return container_of(ibmr, struct pvrdma_user_mr, ibmr);