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| author | Roland Dreier <roland@purestorage.com> | 2013-02-25 09:42:15 -0800 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2013-02-25 09:42:15 -0800 |
| commit | f72dd56690aba26fc87fc64e98dd4cc66f27122c (patch) | |
| tree | d45e0844368ad44e5c4565e3d68b77ee18b92252 /drivers/infiniband | |
| parent | 5a2815f03c0fd5a091c95af93b7f1a17a971ac20 (diff) | |
| download | linux-f72dd56690aba26fc87fc64e98dd4cc66f27122c.tar.gz linux-f72dd56690aba26fc87fc64e98dd4cc66f27122c.tar.bz2 linux-f72dd56690aba26fc87fc64e98dd4cc66f27122c.zip | |
IPoIB: Free ipoib neigh on path record failure so path rec queries are retried
If IPoIB fails to look up a path record (eg if it tries during an SM
failover when one SM is dead but the new one hasn't taken over yet), the
driver ends up with a neighbour structure but no address handle (AH).
There's no mechanism to recover from this: any further packets sent to
this destination will be silently dumped in ipoib_start_xmit().
Fix this by freeing the neighbour structures when a path rec query
fails, so that the next packet queued to be sent will trigger a new path
record query.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_main.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c index 66d6da90982f..8534afd04e7c 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c @@ -510,6 +510,9 @@ static void path_rec_completion(int status, spin_unlock_irqrestore(&priv->lock, flags); + if (IS_ERR_OR_NULL(ah)) + ipoib_del_neighs_by_gid(dev, path->pathrec.dgid.raw); + if (old_ah) ipoib_put_ah(old_ah); |