[PATCH] IB: Fix data length for RMPP SA sends (eff4c654) · Commits · 戴 / test

We need to subtract off the header length from our payload length when sending multi-packet SA messages. Signed-off-by:

drivers/infiniband/core/user_mad.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -334,10 +334,11 @@ static ssize_t ib_umad_write(struct file filp, const char __user buf,
		ret = -EINVAL;
		goto err_ah;
		}
		/* Validate that management class can support RMPP */

		/* Validate that the management class can support RMPP */
		if (rmpp_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_ADM) {
		hdr_len = offsetof(struct ib_sa_mad, data);
		data_len = length;
		data_len = length - hdr_len;
		} else if ((rmpp_mad->mad_hdr.mgmt_class >= IB_MGMT_CLASS_VENDOR_RANGE2_START) &&
		(rmpp_mad->mad_hdr.mgmt_class <= IB_MGMT_CLASS_VENDOR_RANGE2_END)) {
		hdr_len = offsetof(struct ib_vendor_mad, data);