IB/{hw,sw}: Remove 'uobject->context' dependency in object creation APIs

Now when we have the udata passed to all the ib_xxx object creation APIs
and the additional macro 'rdma_udata_to_drv_context' to get the
ib_ucontext from ib_udata stored in uverbs_attr_bundle, we can finally
start to remove the dependency of the drivers in the
ib_xxx->uobject->context.

Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/sw/rdmavt/qp.c

@@ -53,6 +53,7 @@
 #include <rdma/ib_verbs.h>
 #include <rdma/ib_hdrs.h>
 #include <rdma/opa_addr.h>
+#include <rdma/uverbs_ioctl.h>
 #include "qp.h"
 #include "vt.h"
 #include "trace.h"
@@ -956,6 +957,8 @@ struct ib_qp *rvt_create_qp(struct ib_pd *ibpd,
 	size_t sg_list_sz;
 	struct ib_qp *ret = ERR_PTR(-ENOMEM);
 	struct rvt_dev_info *rdi = ib_to_rvt(ibpd->device);
+	struct rvt_ucontext *ucontext = rdma_udata_to_drv_context(
+		udata, struct rvt_ucontext, ibucontext);
 	void *priv = NULL;
 	size_t sqsize;
 
@@ -1129,7 +1132,7 @@ struct ib_qp *rvt_create_qp(struct ib_pd *ibpd,
 			u32 s = sizeof(struct rvt_rwq) + qp->r_rq.size * sz;
 
 			qp->ip = rvt_create_mmap_info(rdi, s,
-						      ibpd->uobject->context,
+						      &ucontext->ibucontext,
 						      qp->r_rq.wq);
 			if (!qp->ip) {
 				ret = ERR_PTR(-ENOMEM);

drivers/infiniband/sw/rdmavt/srq.c

@@ -48,6 +48,7 @@
 #include <linux/err.h>
 #include <linux/slab.h>
 #include <linux/vmalloc.h>
+#include <rdma/uverbs_ioctl.h>
 
 #include "srq.h"
 #include "vt.h"
@@ -77,6 +78,8 @@ struct ib_srq *rvt_create_srq(struct ib_pd *ibpd,
 			      struct ib_udata *udata)
 {
 	struct rvt_dev_info *dev = ib_to_rvt(ibpd->device);
+	struct rvt_ucontext *ucontext = rdma_udata_to_drv_context(
+		udata, struct rvt_ucontext, ibucontext);
 	struct rvt_srq *srq;
 	u32 sz;
 	struct ib_srq *ret;
@@ -119,7 +122,7 @@ struct ib_srq *rvt_create_srq(struct ib_pd *ibpd,
 		u32 s = sizeof(struct rvt_rwq) + srq->rq.size * sz;
 
 		srq->ip =
-		    rvt_create_mmap_info(dev, s, ibpd->uobject->context,
+		    rvt_create_mmap_info(dev, s, &ucontext->ibucontext,
 					 srq->rq.wq);
 		if (!srq->ip) {
 			ret = ERR_PTR(-ENOMEM);

drivers/infiniband/sw/rdmavt/vt.c

@@ -284,10 +284,6 @@ static int rvt_query_gid(struct ib_device *ibdev, u8 port_num,
 					 &gid->global.interface_id);
 }
 
-struct rvt_ucontext {
-	struct ib_ucontext ibucontext;
-};
-
 static inline struct rvt_ucontext *to_iucontext(struct ib_ucontext
 						*ibucontext)
 {

drivers/infiniband/sw/rxe/rxe_qp.c

@@ -35,6 +35,7 @@
 #include <linux/delay.h>
 #include <linux/sched.h>
 #include <linux/vmalloc.h>
+#include <rdma/uverbs_ioctl.h>
 
 #include "rxe.h"
 #include "rxe_loc.h"
@@ -343,7 +344,8 @@ int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd,
 	struct rxe_cq *rcq = to_rcq(init->recv_cq);
 	struct rxe_cq *scq = to_rcq(init->send_cq);
 	struct rxe_srq *srq = init->srq ? to_rsrq(init->srq) : NULL;
-	struct ib_ucontext *context = udata ? ibpd->uobject->context : NULL;
+	struct rxe_ucontext *ucontext =
+		rdma_udata_to_drv_context(udata, struct rxe_ucontext, ibuc);
 
 	rxe_add_ref(pd);
 	rxe_add_ref(rcq);
@@ -358,11 +360,11 @@ int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd,
 
 	rxe_qp_init_misc(rxe, qp, init);
 
-	err = rxe_qp_init_req(rxe, qp, init, context, uresp);
+	err = rxe_qp_init_req(rxe, qp, init, &ucontext->ibuc, uresp);
 	if (err)
 		goto err1;
 
-	err = rxe_qp_init_resp(rxe, qp, init, context, uresp);
+	err = rxe_qp_init_resp(rxe, qp, init, &ucontext->ibuc, uresp);
 	if (err)
 		goto err2;
 

drivers/infiniband/sw/rxe/rxe_verbs.c

@@ -33,6 +33,7 @@
 
 #include <linux/dma-mapping.h>
 #include <net/addrconf.h>
+#include <rdma/uverbs_ioctl.h>
 #include "rxe.h"
 #include "rxe_loc.h"
 #include "rxe_queue.h"
@@ -320,8 +321,9 @@ static struct ib_srq *rxe_create_srq(struct ib_pd *ibpd,
 	int err;
 	struct rxe_dev *rxe = to_rdev(ibpd->device);
 	struct rxe_pd *pd = to_rpd(ibpd);
+	struct rxe_ucontext *ucontext =
+		rdma_udata_to_drv_context(udata, struct rxe_ucontext, ibuc);
 	struct rxe_srq *srq;
-	struct ib_ucontext *context = udata ? ibpd->uobject->context : NULL;
 	struct rxe_create_srq_resp __user *uresp = NULL;
 
 	if (udata) {
@@ -344,7 +346,7 @@ static struct ib_srq *rxe_create_srq(struct ib_pd *ibpd,
 	rxe_add_ref(pd);
 	srq->pd = pd;
 
-	err = rxe_srq_from_init(rxe, srq, init, context, uresp);
+	err = rxe_srq_from_init(rxe, srq, init, &ucontext->ibuc, uresp);
 	if (err)
 		goto err2;