linux-toradex.git/net/9p/trans_rdma.c, branch v4.16

9p: Implement show_options

2017-07-11T10:08:58+00:00

Implement the show_options superblock op for 9p as part of a bid to get
rid of s_options and generic_show_options() to make it easier to implement
a context-based mount where the mount options can be passed individually
over a file descriptor.

Signed-off-by: David Howells 
cc: Eric Van Hensbergen 
cc: Ron Minnich 
cc: Latchesar Ionkov 
cc: v9fs-developer@lists.sourceforge.net
Signed-off-by: Al Viro

IB/core: add support to create a unsafe global rkey to ib_create_pd

2016-09-23T17:47:44+00:00

Instead of exposing ib_get_dma_mr to ULPs and letting them use it more or
less unchecked, this moves the capability of creating a global rkey into
the RDMA core, where it can be easily audited.  It also prints a warning
everytime this feature is used as well.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Sagi Grimberg 
Reviewed-by: Jason Gunthorpe 
Reviewed-by: Steve Wise 
Signed-off-by: Doug Ledford

net/9p: convert to new CQ API

2016-03-11T01:54:09+00:00

Trivial conversion to the new RDMA CQ API.

Signed-off-by: Christoph Hellwig 
Acked-by: Dominique Martinet 
Signed-off-by: Doug Ledford

IB/cma: Add support for network namespaces

2015-10-28T16:32:48+00:00

Add support for network namespaces in the ib_cma module. This is
accomplished by:

1. Adding network namespace parameter for rdma_create_id. This parameter is
   used to populate the network namespace field in rdma_id_private.
   rdma_create_id keeps a reference on the network namespace.
2. Using the network namespace from the rdma_id instead of init_net inside
   of ib_cma, when listening on an ID and when looking for an ID for an
   incoming request.
3. Decrementing the reference count for the appropriate network namespace
   when calling rdma_destroy_id.

In order to preserve the current behavior init_net is passed when calling
from other modules.

Signed-off-by: Guy Shapiro 
Signed-off-by: Haggai Eran 
Signed-off-by: Yotam Kenneth 
Signed-off-by: Shachar Raindel 
Signed-off-by: Doug Ledford

net/9p: Remove ib_get_dma_mr calls

2015-08-30T22:12:36+00:00

The pd now has a local_dma_lkey member which completely replaces
ib_get_dma_mr, use it instead.

Signed-off-by: Jason Gunthorpe 
Tested-by: Dominique Martinet 
Signed-off-by: Doug Ledford

IB/core: Change ib_create_cq to use struct ib_cq_init_attr

2015-06-12T18:49:10+00:00

Currently, ib_create_cq uses cqe and comp_vecotr instead
of the extendible ib_cq_init_attr struct.

Earlier patches already changed the vendors to work with
ib_cq_init_attr. This patch changes the consumers too.

Signed-off-by: Matan Barak 
Signed-off-by: Or Gerlitz 
Signed-off-by: Doug Ledford

net/9p: add a privport option for RDMA transport.

2015-03-22T02:32:33+00:00

RDMA can use the same kind of weak security as TCP by checking the
client can bind to a privileged port, which is better than nothing
if TAUTH isn't implemented.

Signed-off-by: Dominique Martinet 
Signed-off-by: Eric Van Hensbergen

9pnet_rdma: check token type before int conversion

2014-03-25T21:38:19+00:00

When parsing options, make sure we have found a proper token before
doing a numeric conversion.

Without this check, the current code will end up following random
pointers that just happened to be on the stack when this function was
called, because match_token() will not touch the 'args' list unless a
valid token is found.

Signed-off-by: Simon Derr 
Signed-off-by: Eric Van Hensbergen

9pnet_rdma: add cancelled()

2014-03-25T21:38:13+00:00

Take into account posted recv buffers that will never receive their
reply.

The RDMA code posts a recv buffer for each request that it sends.
When a request is flushed, it is possible that this request will
never receive a reply, and that one recv buffer will stay unused on
the recv queue.

It is then possible, if this scenario happens several times, to have the
recv queue full, and have the 9pnet_rmda module unable to send new requests.

Signed-off-by: Simon Derr 
Signed-off-by: Eric Van Hensbergen

9pnet_rdma: update request status during send

2014-03-25T21:38:12+00:00

This will be needed by the flush logic.

Signed-off-by: Simon Derr 
Signed-off-by: Eric Van Hensbergen