Hi, Dekel,
It seems that the link to the patch in your post is broken.
Regards,
Rami Rosen
בתאריך יום ה׳, 28 בפבר׳ 2019, 12:04, מאת Dekel Peled <dek...@mellanox.com>:
> In current kernel implementation, the physical port name for representors
> is a numeric string (i.e. '0', '1', etc.).
>
> Kernel patch [1] implements an updated scheme for naming of representors
> ports.
> The new scheme gives a unique name for each port using the PF ID and the
> VF ID.
> Uplink representors are named 'p0', 'p1', etc.
> VF representors are named 'pf0vf0', 'pf0vf1', 'pf1vf0', 'pf1vf1', etc.
>
> This RFC describes the suggested changes to MLX5 PMD, in order to support
> the new naming scheme, while maintaining support of the existing naming
> scheme.
>
> During PCI probing, MLX5 PMD uses Netlink to query the kernel for switch
> information.
> The response is processed by mlx5_nl_switch_info_cb().
> If this query fails, MLX5 PMD attempts to use sysfs to query for switch
> information.
> This query is implemented in mlx5_sysfs_switch_info();
>
> The following section describes the suggested changes by pseudocode:
> mlx5_nl_switch_info_cb()
> {
> Parse the netlink response message.
> If found type IFLA_PHYS_PORT_NAME {
> Convert payload string to number, store as port-name.
> /* START NEW CODE */
> If convert failed {
> If found substring "vf" in payload string {
> Convert the remainder of payload string to
> number
> Store as port-name.
> }
> }
> /* END OF NEW CODE */
> }
> }
>
> mlx5_sysfs_switch_info()
> {
> Convert ifindex to ifname.
> Open file /sys/class/net/<ifname>/phys_port_name
> Try to convert file contents to number, if succeeded store as
> port-name.
> /* START NEW CODE */
> If convert failed {
> Try to convert file contents to 'pf'/number/'vf'/number.
> If succeeded, store last number as port-name.
> }
> /* END OF NEW CODE */
> }
>
> [1] http://l-gerrit.mtl.labs.mlnx:8080/#/c/upstream/linux/+/160883/
>
