diff options
| author |   Chuck Lever <chuck.lever@oracle.com> | 2016-06-29 13:53:11 -0400 |
|---|---|---|
| committer |   Anna Schumaker <Anna.Schumaker@Netapp.com> | 2016-07-11 15:50:43 -0400 |
| commit | 2dc3a69de0d6e7f4dba7dbf8eadd5c3ac34098c7 (patch) | |
| tree | 71fe19a390fc7317e2d6b09e7f25fc1882e8164a /net/sunrpc/xprtrdma/Makefile | |
| parent | xprtrdma: Do not leak an MW during a DMA map failure (diff) | |
| download | linux-dev-2dc3a69de0d6e7f4dba7dbf8eadd5c3ac34098c7.tar.xz linux-dev-2dc3a69de0d6e7f4dba7dbf8eadd5c3ac34098c7.zip | |
xprtrdma: Remove ALLPHYSICAL memory registration mode
No HCA or RNIC in the kernel tree requires the use of ALLPHYSICAL.
ALLPHYSICAL advertises in the clear on the network fabric an R_key
that is good for all of the client's memory. No known exploit
exists, but theoretically any user on the server can use that R_key
on the client's QP to read or update any part of the client's memory.
ALLPHYSICAL exposes the client to server bugs, including:
o base/bounds errors causing data outside the i/o buffer to be
accessed
o RDMA access after reply causing data corruption and/or integrity
fail
ALLPHYSICAL can't protect application memory regions from server
update after a local signal or soft timeout has terminated an RPC.
ALLPHYSICAL chunks are no larger than a page. Special cases to
handle small chunks and long chunk lists have been a source of
implementation complexity and bugs.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/Makefile')
| -rw-r--r-- | net/sunrpc/xprtrdma/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sunrpc/xprtrdma/Makefile b/net/sunrpc/xprtrdma/Makefile index dc9f3b513a05..ef19fa42c50f 100644 --- a/net/sunrpc/xprtrdma/Makefile +++ b/net/sunrpc/xprtrdma/Makefile @@ -1,7 +1,7 @@ obj-$(CONFIG_SUNRPC_XPRT_RDMA) += rpcrdma.o rpcrdma-y := transport.o rpc_rdma.o verbs.o \ - fmr_ops.o frwr_ops.o physical_ops.o \ + fmr_ops.o frwr_ops.o \ svc_rdma.o svc_rdma_backchannel.o svc_rdma_transport.o \ svc_rdma_marshal.o svc_rdma_sendto.o svc_rdma_recvfrom.o \ module.o |