From cffce99051b80c90630a9fff662a1b25e278069d Mon Sep 17 00:00:00 2001 From: Naresh Gottumukkala Date: Mon, 26 Aug 2013 15:27:44 +0530 Subject: RDMA/ocrdma: Dont use PD 0 for userpace CQ DB Create_CQ verb doesn't provide a PD pointer. So, until now we are creating all (both userspace and kernel) CQ DB regions from PD0. This will result in mmapping PD0 to applications. A rogue userspace application can mess things up. Also more serious issues is even the be2net NIC uses PD0. This patch addresses this problem by: 1) Create a PD page for every userspace application when the alloc_ucontext is called. This will be destroyed in dealloc_ucontext. 2) All CQs for that context will use the PD allocated in ucontext. 3) The first create_PD call from application will result in returning the PD address from its ucontext (no new PD will be created). 4) For subsecquent create_pd calls from application, we create new PDs for the application. Signed-off-by: Naresh Gottumukkala Signed-off-by: Roland Dreier --- drivers/infiniband/hw/ocrdma/ocrdma_main.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/infiniband/hw/ocrdma/ocrdma_main.c') diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_main.c b/drivers/infiniband/hw/ocrdma/ocrdma_main.c index 4eeea56f7b31..7d43ba924bfb 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_main.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_main.c @@ -326,6 +326,7 @@ static int ocrdma_register_device(struct ocrdma_dev *dev) dev->ibdev.req_notify_cq = ocrdma_arm_cq; dev->ibdev.get_dma_mr = ocrdma_get_dma_mr; + dev->ibdev.reg_phys_mr = ocrdma_reg_kernel_mr; dev->ibdev.dereg_mr = ocrdma_dereg_mr; dev->ibdev.reg_user_mr = ocrdma_reg_user_mr; -- cgit v1.2.3-59-g8ed1b