Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit aed01227 authored by Roland Dreier's avatar Roland Dreier
Browse files

IB/mthca: Fix check of max_send_sge for special QPs 



The MLX transport requires two extra gather entries for sends (one for
the header and one for the checksum at the end, as the comment says).
However the code checked that max_recv_sge was not too big, instead of
checking max_send_sge as it should have.  Fix the code to check the
correct condition.

Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent c036925a

drivers/infiniband/hw/mthca/mthca_qp.c

+2 −2
Original line number Diff line number Diff line
@@ -1249,10 +1249,10 @@ static int mthca_set_qp_size(struct mthca_dev *dev, struct ib_qp_cap *cap, 
		return -EINVAL;



	/*

	 * For MLX transport we need 2 extra S/G entries:

	 * For MLX transport we need 2 extra send gather entries:

	 * one for the header and one for the checksum at the end

	 */

	if (qp->transport == MLX && cap->max_recv_sge + 2 > dev->limits.max_sg)

	if (qp->transport == MLX && cap->max_send_sge + 2 > dev->limits.max_sg)

		return -EINVAL;



	if (mthca_is_memfree(dev)) {