From: Jack Morgenstein Date: Tue, 24 Apr 2012 23:06:50 +0000 (-0700) Subject: IB/mad: Set 'D' bit in response for unhandled MADs X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=840777de530ae96ee9a3022f7ec1d6c65abb26ac;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git IB/mad: Set 'D' bit in response for unhandled MADs Commit 0b307043049f ("IB/mad: Return error response for unsupported MADs") does not handle directed-route MADs properly -- it fails to set the 'D' bit in the response MAD status field. This is a problem for SmInfo MADs when the receiver does not have an SM running. Reviewed-by: Hal Rosenstock Signed-off-by: Jack Morgenstein Signed-off-by: Roland Dreier --- diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index 426bb7617ec6..1c73d8aa4b97 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -1854,6 +1854,8 @@ static bool generate_unmatched_resp(struct ib_mad_private *recv, response->mad.mad.mad_hdr.method = IB_MGMT_METHOD_GET_RESP; response->mad.mad.mad_hdr.status = cpu_to_be16(IB_MGMT_MAD_STATUS_UNSUPPORTED_METHOD_ATTRIB); + if (recv->mad.mad.mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) + response->mad.mad.mad_hdr.status |= IB_SMP_DIRECTION; return true; } else {