RDMA/providers: Remove pointless functions

The rdma core is taking care of return the right error code when the
rdma device callbacks aren't supported.

Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/cxgb3/iwch_provider.c

@@ -61,42 +61,6 @@
 #include <rdma/cxgb3-abi.h>
 #include "common.h"
 
-static struct ib_ah *iwch_ah_create(struct ib_pd *pd,
-				    struct rdma_ah_attr *ah_attr,
-				    struct ib_udata *udata)
-{
-	return ERR_PTR(-ENOSYS);
-}
-
-static int iwch_ah_destroy(struct ib_ah *ah)
-{
-	return -ENOSYS;
-}
-
-static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
-{
-	return -ENOSYS;
-}
-
-static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
-{
-	return -ENOSYS;
-}
-
-static int iwch_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_mad,
-			    size_t in_mad_size,
-			    struct ib_mad_hdr *out_mad,
-			    size_t *out_mad_size,
-			    u16 *out_mad_pkey_index)
-{
-	return -ENOSYS;
-}
-
 static int iwch_dealloc_ucontext(struct ib_ucontext *context)
 {
 	struct iwch_dev *rhp = to_iwch_dev(context->device);
@@ -1399,8 +1363,6 @@ int iwch_register_device(struct iwch_dev *dev)
 	dev->ibdev.mmap = iwch_mmap;
 	dev->ibdev.alloc_pd = iwch_allocate_pd;
 	dev->ibdev.dealloc_pd = iwch_deallocate_pd;
-	dev->ibdev.create_ah = iwch_ah_create;
-	dev->ibdev.destroy_ah = iwch_ah_destroy;
 	dev->ibdev.create_qp = iwch_create_qp;
 	dev->ibdev.modify_qp = iwch_ib_modify_qp;
 	dev->ibdev.destroy_qp = iwch_destroy_qp;
@@ -1415,9 +1377,6 @@ 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.attach_mcast = iwch_multicast_attach;
-	dev->ibdev.detach_mcast = iwch_multicast_detach;
-	dev->ibdev.process_mad = iwch_process_mad;
 	dev->ibdev.req_notify_cq = iwch_arm_cq;
 	dev->ibdev.post_send = iwch_post_send;
 	dev->ibdev.post_recv = iwch_post_receive;

drivers/infiniband/hw/cxgb4/cq.c

@@ -1140,11 +1140,6 @@ err_free_chp:
 	return ERR_PTR(ret);
 }
 
-int c4iw_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
-{
-	return -ENOSYS;
-}
-
 int c4iw_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
 {
 	struct c4iw_cq *chp;

drivers/infiniband/hw/cxgb4/iw_cxgb4.h

@@ -1063,7 +1063,6 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev,
 			     const struct ib_cq_init_attr *attr,
 			     struct ib_ucontext *ib_context,
 			     struct ib_udata *udata);
-int c4iw_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata);
 int c4iw_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
 int c4iw_modify_srq(struct ib_srq *ib_srq, struct ib_srq_attr *attr,
 		    enum ib_srq_attr_mask srq_attr_mask,

drivers/infiniband/hw/cxgb4/provider.c

@@ -58,41 +58,6 @@ static int fastreg_support = 1;
 module_param(fastreg_support, int, 0644);
 MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default=1)");
 
-static struct ib_ah *c4iw_ah_create(struct ib_pd *pd,
-				    struct rdma_ah_attr *ah_attr,
-				    struct ib_udata *udata)
-
-{
-	return ERR_PTR(-ENOSYS);
-}
-
-static int c4iw_ah_destroy(struct ib_ah *ah)
-{
-	return -ENOSYS;
-}
-
-static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
-{
-	return -ENOSYS;
-}
-
-static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
-{
-	return -ENOSYS;
-}
-
-static int c4iw_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_mad,
-			    size_t in_mad_size,
-			    struct ib_mad_hdr *out_mad,
-			    size_t *out_mad_size,
-			    u16 *out_mad_pkey_index)
-{
-	return -ENOSYS;
-}
-
 void _c4iw_free_ucontext(struct kref *kref)
 {
 	struct c4iw_ucontext *ucontext;
@@ -615,8 +580,6 @@ void c4iw_register_device(struct work_struct *work)
 	dev->ibdev.mmap = c4iw_mmap;
 	dev->ibdev.alloc_pd = c4iw_allocate_pd;
 	dev->ibdev.dealloc_pd = c4iw_deallocate_pd;
-	dev->ibdev.create_ah = c4iw_ah_create;
-	dev->ibdev.destroy_ah = c4iw_ah_destroy;
 	dev->ibdev.create_qp = c4iw_create_qp;
 	dev->ibdev.modify_qp = c4iw_ib_modify_qp;
 	dev->ibdev.query_qp = c4iw_ib_query_qp;
@@ -626,7 +589,6 @@ void c4iw_register_device(struct work_struct *work)
 	dev->ibdev.destroy_srq = c4iw_destroy_srq;
 	dev->ibdev.create_cq = c4iw_create_cq;
 	dev->ibdev.destroy_cq = c4iw_destroy_cq;
-	dev->ibdev.resize_cq = c4iw_resize_cq;
 	dev->ibdev.poll_cq = c4iw_poll_cq;
 	dev->ibdev.get_dma_mr = c4iw_get_dma_mr;
 	dev->ibdev.reg_user_mr = c4iw_reg_user_mr;
@@ -635,9 +597,6 @@ void c4iw_register_device(struct work_struct *work)
 	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.attach_mcast = c4iw_multicast_attach;
-	dev->ibdev.detach_mcast = c4iw_multicast_detach;
-	dev->ibdev.process_mad = c4iw_process_mad;
 	dev->ibdev.req_notify_cq = c4iw_arm_cq;
 	dev->ibdev.post_send = c4iw_post_send;
 	dev->ibdev.post_recv = c4iw_post_receive;

drivers/infiniband/hw/i40iw/i40iw_verbs.c

@@ -2702,21 +2702,6 @@ static int i40iw_query_gid(struct ib_device *ibdev,
 	return 0;
 }
 
-/**
- * i40iw_modify_port  Modify port properties
- * @ibdev: device pointer from stack
- * @port: port number
- * @port_modify_mask: mask for port modifications
- * @props: port properties
- */
-static int i40iw_modify_port(struct ib_device *ibdev,
-			     u8 port,
-			     int port_modify_mask,
-			     struct ib_port_modify *props)
-{
-	return -ENOSYS;
-}
-
 /**
  * i40iw_query_pkey - Query partition key
  * @ibdev: device pointer from stack
@@ -2733,28 +2718,6 @@ static int i40iw_query_pkey(struct ib_device *ibdev,
 	return 0;
 }
 
-/**
- * i40iw_create_ah - create address handle
- * @ibpd: ptr of pd
- * @ah_attr: address handle attributes
- */
-static struct ib_ah *i40iw_create_ah(struct ib_pd *ibpd,
-				     struct rdma_ah_attr *attr,
-				     struct ib_udata *udata)
-
-{
-	return ERR_PTR(-ENOSYS);
-}
-
-/**
- * i40iw_destroy_ah - Destroy address handle
- * @ah: pointer to address handle
- */
-static int i40iw_destroy_ah(struct ib_ah *ah)
-{
-	return -ENOSYS;
-}
-
 /**
  * i40iw_get_vector_affinity - report IRQ affinity mask
  * @ibdev: IB device
@@ -2822,7 +2785,6 @@ static struct i40iw_ib_device *i40iw_init_rdma_device(struct i40iw_device *iwdev
 	iwibdev->ibdev.num_comp_vectors = iwdev->ceqs_count;
 	iwibdev->ibdev.dev.parent = &pcidev->dev;
 	iwibdev->ibdev.query_port = i40iw_query_port;
-	iwibdev->ibdev.modify_port = i40iw_modify_port;
 	iwibdev->ibdev.query_pkey = i40iw_query_pkey;
 	iwibdev->ibdev.query_gid = i40iw_query_gid;
 	iwibdev->ibdev.alloc_ucontext = i40iw_alloc_ucontext;
@@ -2842,8 +2804,6 @@ static struct i40iw_ib_device *i40iw_init_rdma_device(struct i40iw_device *iwdev
 	iwibdev->ibdev.alloc_hw_stats = i40iw_alloc_hw_stats;
 	iwibdev->ibdev.get_hw_stats = i40iw_get_hw_stats;
 	iwibdev->ibdev.query_device = i40iw_query_device;
-	iwibdev->ibdev.create_ah = i40iw_create_ah;
-	iwibdev->ibdev.destroy_ah = i40iw_destroy_ah;
 	iwibdev->ibdev.drain_sq = i40iw_drain_sq;
 	iwibdev->ibdev.drain_rq = i40iw_drain_rq;
 	iwibdev->ibdev.alloc_mr = i40iw_alloc_mr;

drivers/infiniband/hw/nes/nes_verbs.c

@@ -754,26 +754,6 @@ static int nes_dealloc_pd(struct ib_pd *ibpd)
 }
 
 
-/**
- * nes_create_ah
- */
-static struct ib_ah *nes_create_ah(struct ib_pd *pd,
-				   struct rdma_ah_attr *ah_attr,
-				   struct ib_udata *udata)
-{
-	return ERR_PTR(-ENOSYS);
-}
-
-
-/**
- * nes_destroy_ah
- */
-static int nes_destroy_ah(struct ib_ah *ah)
-{
-	return -ENOSYS;
-}
-
-
 /**
  * nes_get_encoded_size
  */
@@ -3005,40 +2985,6 @@ int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 	return err;
 }
 
-
-/**
- * nes_muticast_attach
- */
-static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
-{
-	nes_debug(NES_DBG_INIT, "\n");
-	return -ENOSYS;
-}
-
-
-/**
- * nes_multicast_detach
- */
-static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
-{
-	nes_debug(NES_DBG_INIT, "\n");
-	return -ENOSYS;
-}
-
-
-/**
- * nes_process_mad
- */
-static int nes_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,
-		struct ib_mad_hdr *out, size_t *out_mad_size,
-		u16 *out_mad_pkey_index)
-{
-	nes_debug(NES_DBG_INIT, "\n");
-	return -ENOSYS;
-}
-
 static inline void
 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, const struct ib_send_wr *ib_wr,
 		 u32 uselkey)
@@ -3737,8 +3683,6 @@ struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
 	nesibdev->ibdev.mmap = nes_mmap;
 	nesibdev->ibdev.alloc_pd = nes_alloc_pd;
 	nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
-	nesibdev->ibdev.create_ah = nes_create_ah;
-	nesibdev->ibdev.destroy_ah = nes_destroy_ah;
 	nesibdev->ibdev.create_qp = nes_create_qp;
 	nesibdev->ibdev.modify_qp = nes_modify_qp;
 	nesibdev->ibdev.query_qp = nes_query_qp;
@@ -3755,10 +3699,6 @@ 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.attach_mcast = nes_multicast_attach;
-	nesibdev->ibdev.detach_mcast = nes_multicast_detach;
-	nesibdev->ibdev.process_mad = nes_process_mad;
-
 	nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
 	nesibdev->ibdev.post_send = nes_post_send;
 	nesibdev->ibdev.post_recv = nes_post_recv;

drivers/infiniband/hw/ocrdma/ocrdma_ah.c

@@ -254,12 +254,6 @@ int ocrdma_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr)
 	return 0;
 }
 
-int ocrdma_modify_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr)
-{
-	/* modify_ah is unsupported */
-	return -ENOSYS;
-}
-
 int ocrdma_process_mad(struct ib_device *ibdev,
 		       int process_mad_flags,
 		       u8 port_num,

drivers/infiniband/hw/ocrdma/ocrdma_ah.h

@@ -55,7 +55,6 @@ struct ib_ah *ocrdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr,
 			       struct ib_udata *udata);
 int ocrdma_destroy_ah(struct ib_ah *ah);
 int ocrdma_query_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr);
-int ocrdma_modify_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr);
 
 int ocrdma_process_mad(struct ib_device *,
 		       int process_mad_flags,

drivers/infiniband/hw/ocrdma/ocrdma_main.c

@@ -176,7 +176,6 @@ static int ocrdma_register_device(struct ocrdma_dev *dev)
 	dev->ibdev.create_ah = ocrdma_create_ah;
 	dev->ibdev.destroy_ah = ocrdma_destroy_ah;
 	dev->ibdev.query_ah = ocrdma_query_ah;
-	dev->ibdev.modify_ah = ocrdma_modify_ah;
 
 	dev->ibdev.poll_cq = ocrdma_poll_cq;
 	dev->ibdev.post_send = ocrdma_post_send;

drivers/infiniband/hw/vmw_pvrdma/pvrdma_cq.c

@@ -278,19 +278,6 @@ int pvrdma_destroy_cq(struct ib_cq *cq)
 	return ret;
 }
 
-/**
- * pvrdma_modify_cq - modify the CQ moderation parameters
- * @ibcq: the CQ to modify
- * @cq_count: number of CQEs that will trigger an event
- * @cq_period: max period of time in usec before triggering an event
- *
- * @return: -EOPNOTSUPP as CQ resize is not supported.
- */
-int pvrdma_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
-{
-	return -EOPNOTSUPP;
-}
-
 static inline struct pvrdma_cqe *get_cqe(struct pvrdma_cq *cq, int i)
 {
 	return (struct pvrdma_cqe *)pvrdma_page_dir_get_ptr(
@@ -428,16 +415,3 @@ int pvrdma_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
 	/* Ensure we do not return errors from poll_cq */
 	return npolled;
 }
-
-/**
- * pvrdma_resize_cq - resize CQ
- * @ibcq: the completion queue
- * @entries: CQ entries
- * @udata: user data
- *
- * @return: -EOPNOTSUPP as CQ resize is not supported.
- */
-int pvrdma_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
-{
-	return -EOPNOTSUPP;
-}

drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c

@@ -214,8 +214,6 @@ static int pvrdma_register_device(struct pvrdma_dev *dev)
 	dev->ib_dev.post_send = pvrdma_post_send;
 	dev->ib_dev.post_recv = pvrdma_post_recv;
 	dev->ib_dev.create_cq = pvrdma_create_cq;
-	dev->ib_dev.modify_cq = pvrdma_modify_cq;
-	dev->ib_dev.resize_cq = pvrdma_resize_cq;
 	dev->ib_dev.destroy_cq = pvrdma_destroy_cq;
 	dev->ib_dev.poll_cq = pvrdma_poll_cq;
 	dev->ib_dev.req_notify_cq = pvrdma_req_notify_cq;
@@ -259,7 +257,6 @@ static int pvrdma_register_device(struct pvrdma_dev *dev)
 		dev->ib_dev.modify_srq = pvrdma_modify_srq;
 		dev->ib_dev.query_srq = pvrdma_query_srq;
 		dev->ib_dev.destroy_srq = pvrdma_destroy_srq;
-		dev->ib_dev.post_srq_recv = pvrdma_post_srq_recv;
 
 		dev->srq_tbl = kcalloc(dev->dsr->caps.max_srq,
 				       sizeof(struct pvrdma_srq *),

drivers/infiniband/hw/vmw_pvrdma/pvrdma_srq.c

@@ -52,13 +52,6 @@
 
 #include "pvrdma.h"
 
-int pvrdma_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr,
-			 const struct ib_recv_wr **bad_wr)
-{
-	/* No support for kernel clients. */
-	return -EOPNOTSUPP;
-}
-
 /**
  * pvrdma_query_srq - query shared receive queue
  * @ibsrq: the shared receive queue to query

drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.h

@@ -412,15 +412,10 @@ struct ib_mr *pvrdma_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
 			      u32 max_num_sg);
 int pvrdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
 		     int sg_nents, unsigned int *sg_offset);
-int pvrdma_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
-int pvrdma_resize_cq(struct ib_cq *ibcq, int entries,
-		     struct ib_udata *udata);
 struct ib_cq *pvrdma_create_cq(struct ib_device *ibdev,
 			       const struct ib_cq_init_attr *attr,
 			       struct ib_ucontext *context,
 			       struct ib_udata *udata);
-int pvrdma_resize_cq(struct ib_cq *ibcq, int entries,
-		     struct ib_udata *udata);
 int pvrdma_destroy_cq(struct ib_cq *cq);
 int pvrdma_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
 int pvrdma_req_notify_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
@@ -435,8 +430,6 @@ int pvrdma_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
 		      enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
 int pvrdma_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
 int pvrdma_destroy_srq(struct ib_srq *srq);
-int pvrdma_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr,
-			 const struct ib_recv_wr **bad_wr);
 
 struct ib_qp *pvrdma_create_qp(struct ib_pd *pd,
 			       struct ib_qp_init_attr *init_attr,