From cb814642e7e3e67f6a7c24b14531e95ccdb7c3cc Mon Sep 17 00:00:00 2001 From: Lijun Ou Date: Tue, 20 Sep 2016 17:07:07 +0100 Subject: [PATCH] IB/hns: Validate mtu when modified qp The mtu should be validated when modify qp,so we check it. Signed-off-by: Lijun Ou Signed-off-by: Peter Chen Reviewed-by: Wei Hu (Xavier) Signed-off-by: Salil Mehta Signed-off-by: Doug Ledford --- drivers/infiniband/hw/hns/hns_roce_qp.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/infiniband/hw/hns/hns_roce_qp.c b/drivers/infiniband/hw/hns/hns_roce_qp.c index dd1b2140d8db..6a38909929cd 100644 --- a/drivers/infiniband/hw/hns/hns_roce_qp.c +++ b/drivers/infiniband/hw/hns/hns_roce_qp.c @@ -32,6 +32,7 @@ */ #include +#include #include #include "hns_roce_common.h" #include "hns_roce_device.h" @@ -657,6 +658,7 @@ int hns_roce_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, struct device *dev = &hr_dev->pdev->dev; int ret = -EINVAL; int p; + enum ib_mtu active_mtu; mutex_lock(&hr_qp->mutex); @@ -687,6 +689,19 @@ int hns_roce_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, } } + if (attr_mask & IB_QP_PATH_MTU) { + p = attr_mask & IB_QP_PORT ? (attr->port_num - 1) : hr_qp->port; + active_mtu = iboe_get_mtu(hr_dev->iboe.netdevs[p]->mtu); + + if (attr->path_mtu > IB_MTU_2048 || + attr->path_mtu < IB_MTU_256 || + attr->path_mtu > active_mtu) { + dev_err(dev, "attr path_mtu(%d)invalid while modify qp", + attr->path_mtu); + goto out; + } + } + if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC && attr->max_rd_atomic > hr_dev->caps.max_qp_init_rdma) { dev_err(dev, "attr max_rd_atomic invalid.attr->max_rd_atomic=%d\n", -- 2.20.1