From 580db513b4a9d52f306580015a1872eea0a0894e Mon Sep 17 00:00:00 2001 From: Khang Nguyen Date: Tue, 5 Nov 2024 14:19:15 +0700 Subject: net: mctp: Expose transport binding identifier via IFLA attribute MCTP control protocol implementations are transport binding dependent. Endpoint discovery is mandatory based on transport binding. Message timing requirements are specified in each respective transport binding specification. However, we currently have no means to get this information from MCTP links. Add a IFLA_MCTP_PHYS_BINDING netlink link attribute, which represents the transport type using the DMTF DSP0239-defined type numbers, returned as part of RTM_GETLINK data. We get an IFLA_MCTP_PHYS_BINDING attribute for each MCTP link, for example: - 0x00 (unspec) for loopback interface; - 0x01 (SMBus/I2C) for mctpi2c%d interfaces; and - 0x05 (serial) for mctpserial%d interfaces. Signed-off-by: Khang Nguyen Reviewed-by: Matt Johnston Link: https://patch.msgid.link/20241105071915.821871-1-khangng@os.amperecomputing.com Signed-off-by: Jakub Kicinski --- drivers/net/mctp/mctp-i3c.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/mctp/mctp-i3c.c') diff --git a/drivers/net/mctp/mctp-i3c.c b/drivers/net/mctp/mctp-i3c.c index 1bc87a062686..9adad59b8676 100644 --- a/drivers/net/mctp/mctp-i3c.c +++ b/drivers/net/mctp/mctp-i3c.c @@ -607,7 +607,7 @@ __must_hold(&busdevs_lock) goto err_free_uninit; } - rc = mctp_register_netdev(ndev, NULL); + rc = mctp_register_netdev(ndev, NULL, MCTP_PHYS_BINDING_I3C); if (rc < 0) { dev_warn(&ndev->dev, "netdev register failed: %d\n", rc); goto err_free_netdev; -- cgit v1.2.3-70-g09d2