drbd: protocol compatibility for maximum packet sizes

Two missing corner cases to the "maximum packet size" handshake.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 6b69b2f734dc..9da32ac62c22 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -3088,6 +3088,8 @@ static int receive_sizes(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned
 
                 if (mdev->agreed_pro_version < 94)
                         max_seg_s = be32_to_cpu(p->max_segment_size);
+                else if (mdev->agreed_pro_version == 94)
+                        max_seg_s = DRBD_MAX_SIZE_H80_PACKET;
                 else /* drbd 8.3.8 onwards */
                         max_seg_s = DRBD_MAX_SEGMENT_SIZE;