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IB/hns: Add & initialize "node_guid" parameter for RDMA CM

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According to the Infiniband spec, NodeGUID uniquely identifies a
node. This must be initialized to some unique value. This patch
adds the support to the HNS RoCE driver to fetch the NodeGUID
value from DT or ACPI and then use this value to initialize the
node_guid parameter of IB device. This value shall be used by
RDMA CM.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Reviewed-by: Wei Hu <xavier.huwei@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Lijun Ou 2016-09-15 23:48:07 +01:00 committed by Doug Ledford
parent 2eefca2722
commit 31644665d4
2 changed files with 10 additions and 0 deletions
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1
drivers/infiniband/hw/hns/hns_roce_device.h
View File

@ -74,6 +74,7 @@
#define MR_TYPE_DMA 0x03
#define PKEY_ID 0xffff
#define GUID_LEN 8
#define NODE_DESC_SIZE 64
#define SERV_TYPE_RC 0

9
drivers/infiniband/hw/hns/hns_roce_main.c
View File

@ -797,6 +797,15 @@ static int hns_roce_get_cfg(struct hns_roce_dev *hr_dev)
if (IS_ERR(hr_dev->reg_base))
return PTR_ERR(hr_dev->reg_base);
/* read the node_guid of IB device from the DT or ACPI */
ret = device_property_read_u8_array(dev, "node-guid",
(u8 *)&hr_dev->ib_dev.node_guid,
GUID_LEN);
if (ret) {
dev_err(dev, "couldn't get node_guid from DT or ACPI!\n");
return ret;
}
/* get the RoCE associated ethernet ports or netdevices */
for (i = 0; i < HNS_ROCE_MAX_PORTS; i++) {
if (dev_of_node(dev)) {