RDMA/ucma: Allow resolving address w/o specifying source address

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commit 09abfe7b5b upstream.

The RDMA CM will select a source device and address by consulting
the routing table if no source address is passed into
rdma_resolve_address().  Userspace will ask for this by passing an
all-zero source address in the RESOLVE_IP command.  Unfortunately
the new check for non-zero address size rejects this with EINVAL,
which breaks valid userspace applications.

Fix this by explicitly allowing a zero address family for the source.

Fixes: 2975d5de64 ("RDMA/ucma: Check AF family prior resolving address")
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

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Roland Dreier 2018-04-19 08:28:11 -07:00 • committed by Ben Hutchings

parent 1bc392383d

commit 07f8cb3105

1 changed files with 1 additions and 1 deletions

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drivers/infiniband/core/ucma.c

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