From: Dean Luick <dean.luick@cornelisnetworks.com>
Date: Wed, 11 Mar 2026 17:28:03 +0000 (-0400)
Subject: RDMA/rdmavt: Add ucontext alloc/dealloc passthrough
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=679eb25de4ee537f209c6d81f7808ad65b03bbbc;p=thirdparty%2Flinux.git

RDMA/rdmavt: Add ucontext alloc/dealloc passthrough

Add a private data pointer to the ucontext structure and add
per-client pass-throughs.

Signed-off-by: Dean Luick <dean.luick@cornelisnetworks.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Link: https://patch.msgid.link/177325008318.52243.7367786996925601681.stgit@awdrv-04.cornelisnetworks.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
---

diff --git a/drivers/infiniband/sw/rdmavt/vt.c b/drivers/infiniband/sw/rdmavt/vt.c
index 0c28b412d81a4..033d8932aff16 100644
--- a/drivers/infiniband/sw/rdmavt/vt.c
+++ b/drivers/infiniband/sw/rdmavt/vt.c
@@ -244,6 +244,10 @@ static int rvt_query_gid(struct ib_device *ibdev, u32 port_num,
  */
 static int rvt_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata)
 {
+	struct rvt_dev_info *rdi = ib_to_rvt(uctx->device);
+
+	if (rdi->driver_f.alloc_ucontext)
+		return rdi->driver_f.alloc_ucontext(uctx, udata);
 	return 0;
 }
 
@@ -253,6 +257,10 @@ static int rvt_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata)
  */
 static void rvt_dealloc_ucontext(struct ib_ucontext *context)
 {
+	struct rvt_dev_info *rdi = ib_to_rvt(context->device);
+
+	if (rdi->driver_f.dealloc_ucontext)
+		rdi->driver_f.dealloc_ucontext(context);
 	return;
 }
 
diff --git a/include/rdma/rdma_vt.h b/include/rdma/rdma_vt.h
index c429d6ddb1292..8671c6da16bb2 100644
--- a/include/rdma/rdma_vt.h
+++ b/include/rdma/rdma_vt.h
@@ -149,6 +149,7 @@ struct rvt_driver_params {
 /* User context */
 struct rvt_ucontext {
 	struct ib_ucontext ibucontext;
+	void *priv;
 };
 
 /* Protection domain */
@@ -359,6 +360,12 @@ struct rvt_driver_provided {
 
 	/* Get and return CPU to pin CQ processing thread */
 	int (*comp_vect_cpu_lookup)(struct rvt_dev_info *rdi, int comp_vect);
+
+	/* allocate a ucontext */
+	int (*alloc_ucontext)(struct ib_ucontext *uctx, struct ib_udata *udata);
+
+	/* deallocate a ucontext */
+	void (*dealloc_ucontext)(struct ib_ucontext *context);
 };
 
 struct rvt_dev_info {