[PATCH rdma-next 01/13] RDMA/mana_ib: Allow registration of DMA-mapped memory in PDs
From: Konstantin Taranov <hidden>
Date: 2025-01-20 17:27:31
Also in:
linux-hyperv, linux-rdma, lkml
Subsystem:
infiniband subsystem, microsoft mana rdma driver, networking [general], the rest · Maintainers:
Jason Gunthorpe, Leon Romanovsky, Long Li, Konstantin Taranov, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Konstantin Taranov <kotaranov@microsoft.com> Allow the HW to register DMA-mapped memory for kernel-level PDs. Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> Reviewed-by: Shiraz Saleem <redacted> --- drivers/infiniband/hw/mana/main.c | 3 +++ include/net/mana/gdma.h | 1 + 2 files changed, 4 insertions(+)
diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index 67c2d43..45b251b 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c@@ -82,6 +82,9 @@ int mana_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_PD, sizeof(req), sizeof(resp)); + if (!udata) + flags |= GDMA_PD_FLAG_ALLOW_GPA_MR; + req.flags = flags; err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
diff --git a/include/net/mana/gdma.h b/include/net/mana/gdma.h
index 90f5665..03e1b25 100644
--- a/include/net/mana/gdma.h
+++ b/include/net/mana/gdma.h@@ -775,6 +775,7 @@ struct gdma_destroy_dma_region_req { enum gdma_pd_flags { GDMA_PD_FLAG_INVALID = 0, + GDMA_PD_FLAG_ALLOW_GPA_MR = 1, }; struct gdma_create_pd_req {
--
2.43.0