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authorNaresh Gottumukkala <bgottumukkala@emulex.com>2013-08-26 15:27:44 +0530
committerRoland Dreier <roland@purestorage.com>2013-09-02 21:18:32 -0700
commitcffce99051b80c90630a9fff662a1b25e278069d (patch)
tree58257cc50f34458649c412d5a723063d53b417a3 /drivers/infiniband/hw/ocrdma/ocrdma_main.c
parentRDMA/ocrdma: FRMA code cleanup (diff)
downloadlinux-dev-cffce99051b80c90630a9fff662a1b25e278069d.tar.xz
linux-dev-cffce99051b80c90630a9fff662a1b25e278069d.zip
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 <bgottumukkala@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/ocrdma/ocrdma_main.c')
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_main.c1
1 files changed, 1 insertions, 0 deletions
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;