qp_mtu
link->peer_mtu = clc->r0.qp_mtu;
clc->r0.qp_mtu = link->path_mtu;
clc->r0.qp_mtu = min(link->path_mtu, link->peer_mtu);
qp_mtu : 4; /* QP mtu */
u8 qp_mtu : 4,
link->peer_mtu = add_llc->qp_mtu;
if (!llc->qp_mtu)
addllc->qp_mtu = link_new->path_mtu;
addllc->qp_mtu = min(link_new->path_mtu,
qp_mtu : 4;
u8 qp_mtu : 4,