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| author | Naresh Gottumukkala <bgottumukkala@emulex.com> | 2013-08-26 15:27:44 +0530 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2013-09-02 21:18:32 -0700 |
| commit | cffce99051b80c90630a9fff662a1b25e278069d (patch) | |
| tree | 58257cc50f34458649c412d5a723063d53b417a3 /drivers/infiniband/hw/ocrdma/ocrdma_sli.h | |
| parent | 2b51a9b9eb6bf240d2592e10d2f8823dd1f5ee3e (diff) | |
| download | linux-rt-cffce99051b80c90630a9fff662a1b25e278069d.tar.gz | |
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_sli.h')
| -rw-r--r-- | drivers/infiniband/hw/ocrdma/ocrdma_sli.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_sli.h b/drivers/infiniband/hw/ocrdma/ocrdma_sli.h index d1a9fb72a4bd..1e2992fee4be 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_sli.h +++ b/drivers/infiniband/hw/ocrdma/ocrdma_sli.h @@ -547,6 +547,7 @@ enum { enum { OCRDMA_CREATE_CQ_VER2 = 2, + OCRDMA_CREATE_CQ_VER3 = 3, OCRDMA_CREATE_CQ_PAGE_CNT_MASK = 0xFFFF, OCRDMA_CREATE_CQ_PAGE_SIZE_SHIFT = 16, @@ -580,7 +581,8 @@ struct ocrdma_create_cq_cmd { u32 pgsz_pgcnt; u32 ev_cnt_flags; u32 eqn; - u32 cqe_count; + u16 cqe_count; + u16 pd_id; u32 rsvd6; struct ocrdma_pa pa[OCRDMA_CREATE_CQ_MAX_PAGES]; }; |