[Intel-wired-lan] [next-queue v5 PATCH 3/7] i40e: Sync link state between VFs and VFPRs

[Bowers, AndrewX]

> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at lists.osuosl.org] On
> Behalf Of Sridhar Samudrala
> Sent: Wednesday, January 25, 2017 4:54 PM
> To: intel-wired-lan at lists.osuosl.org
> Subject: [Intel-wired-lan] [next-queue v5 PATCH 3/7] i40e: Sync link state
> between VFs and VFPRs
> 
> This patch enables
> - reflecting the link state of VFPR based on VF admin state & link state
>   of VF based on admin state of VFPR.
> - bringing up/down the VFPR sends a notification to update VF link state.
> - bringing up/down the VF will cause the link state update of VFPR.
> - enable/disable VF link state via ndo_set_vf_link_state will update the
>   admin state of associated VFPR.
> 
> PF: enp5s0f0, VFs: enp5s2,enp5s2f1 VFPRs:enp5s0f0-vf0, enp5s0f0-vf1 #
> rmmod i40e; modprobe i40e # devlink dev eswitch set pci/0000:05:00.0 mode
> switchdev # echo 2 > /sys/class/net/enp5s0f0/device/sriov_numvfs
> 
> # ip link set enp5s2 up
> # ip link set enp5s0f0-vf0 up
> # ip link set enp5s0f0-vf1 up
> 
> /* enp5s2 UP -> enp5s0f0-vf0 CARRIER ON */ # ip link show enp5s0f0-vf0
> 215: enp5s0f0-vf0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
> fq_codel state UP mode DEFAULT group default qlen 1000
>      link/ether 68:05:ca:2e:72:68 brd ff:ff:ff:ff:ff:ff
> 
> /* enp5s0f0-vf0 UP -> enp5s2 CARRIER ON */ # ip link show enp5s2
> 218: enp5s2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq
> state UP mode DEFAULT group default qlen 1000
>      link/ether ea:4d:60:bc:6f:85 brd ff:ff:ff:ff:ff:ff
> 
> /* enp5s2f1 DOWN -> enp5s0f0-vf1 NO-CARRIER */ # ip link show enp5s0f0-
> vf1
> 216: enp5s0f0-vf1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500
> qdisc fq_codel state DOWN mode DEFAULT group default qlen 1000
>      link/ether 68:05:ca:2e:72:68 brd ff:ff:ff:ff:ff:ff
> 
> # ip link set enp5s0f0-vf0 down
> # ip link set enp5s2f1 up
> 
> /* enp5s0-vf0 DOWN -> enp5s2 NO_CARRIER */ # ip link show enp5s2
> 218: enp5s2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq
> state DOWN mode DEFAULT group default qlen 1000
>      link/ether ea:4d:60:bc:6f:85 brd ff:ff:ff:ff:ff:ff
> 
> # ip -d link show enp5s0f0
> 213: enp5s0f0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop portid
> 6805ca27268 state DOWN mode DEFAULT group default qlen 1000
>      link/ether 68:05:ca:2e:72:68 brd ff:ff:ff:ff:ff:ff promiscuity 0 addrgenmode
> eui64
>      vf 0 MAC 00:00:00:00:00:00, spoof checking on, link-state disable, trust off
>      vf 1 MAC 00:00:00:00:00:00, spoof checking on, link-state enable, trust off
> 
> Signed-off-by: Sridhar Samudrala <sridhar.samudrala at intel.com>
> Signed-off-by: Anjali Singhai <anjali.singhai at intel.com>
> ---
>  drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 44
> ++++++++++++++++++++++
>  1 file changed, 44 insertions(+)

Tested-by: Andrew Bowers <andrewx.bowers at intel.com>