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RDMA/siw: Make node GUIDs valid EUI-64 identifiers

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>From the IBTA: "GUID (Global Unique Identifier): A globally unique EUI-64
compliant identifier." Make sure that siw GUIDs are valid EUI-64 identifiers.

Link: https://lore.kernel.org/r/20190930231707.48259-6-bvanassche@acm.org
Cc: Bernard Metzler <bmt@zurich.ibm.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Bart Van Assche 2019-09-30 16:16:57 -07:00 committed by Jason Gunthorpe
parent 30e0f6cf5a
commit 934f05b05d
1 changed files with 8 additions and 3 deletions
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11
drivers/infiniband/sw/siw/siw_main.c
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@ -16,6 +16,7 @@
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <net/addrconf.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/rdma_netlink.h>
@ -350,15 +351,19 @@ static struct siw_device *siw_device_create(struct net_device *netdev)
sdev->netdev = netdev;
if (netdev->type != ARPHRD_LOOPBACK) {
memcpy(&base_dev->node_guid, netdev->dev_addr, 6);
addrconf_addr_eui48((unsigned char *)&base_dev->node_guid,
netdev->dev_addr);
} else {
/*
* The loopback device does not have a HW address,
* but connection mangagement lib expects gid != 0
*/
size_t gidlen = min_t(size_t, strlen(base_dev->name), 6);
size_t len = min_t(size_t, strlen(base_dev->name), 6);
char addr[6] = { };
memcpy(&base_dev->node_guid, base_dev->name, gidlen);
memcpy(addr, base_dev->name, len);
addrconf_addr_eui48((unsigned char *)&base_dev->node_guid,
addr);
}
base_dev->uverbs_cmd_mask =
(1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |