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Message-Id: <1474429432-102772-13-git-send-email-jeffrey.t.kirsher@intel.com>
Date: Tue, 20 Sep 2016 20:43:49 -0700
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: davem@...emloft.net
Cc: Sridhar Samudrala <sridhar.samudrala@...el.com>,
netdev@...r.kernel.org, nhorman@...hat.com, sassmann@...hat.com,
jogreene@...hat.com, guru.anbalagane@...cle.com,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 12/15] i40e: Sync link state between VFs and VF Port representors(VFPR)
From: Sridhar Samudrala <sridhar.samudrala@...el.com>
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
# modprobe i40e
# 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
# 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 00:00:00:00:00:00 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 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
# ip link set enp5s0f0-vf0 down
# ip link set enp5s2f1 up
/* enp5s2 UP -> enp5s0f0-vf1 CARRIER ON */
# ip link show enp5s0f0-vf1
216: enp5s0f0-vf1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
/* 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 6805ca2e7268 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
vf 1 MAC 00:00:00:00:00:00, spoof checking on, link-state enable
Signed-off-by: Sridhar Samudrala <sridhar.samudrala@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 33 ++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index b90abd3..795a294 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -1013,11 +1013,25 @@ complete_reset:
static int i40e_vf_netdev_open(struct net_device *dev)
{
+ struct i40e_vf_netdev_priv *priv = netdev_priv(dev);
+ struct i40e_vf *vf = priv->vf;
+
+ vf->link_forced = true;
+ vf->link_up = true;
+ i40e_vc_notify_vf_link_state(vf);
+
return 0;
}
static int i40e_vf_netdev_stop(struct net_device *dev)
{
+ struct i40e_vf_netdev_priv *priv = netdev_priv(dev);
+ struct i40e_vf *vf = priv->vf;
+
+ vf->link_forced = true;
+ vf->link_up = false;
+ i40e_vc_notify_vf_link_state(vf);
+
return 0;
}
@@ -1907,6 +1921,10 @@ static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
if (i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], true))
aq_ret = I40E_ERR_TIMEOUT;
+
+ if ((0 == aq_ret) && vf->ctrl_netdev)
+ netif_carrier_on(vf->ctrl_netdev);
+
error_param:
/* send the response to the VF */
return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ENABLE_QUEUES,
@@ -1947,6 +1965,9 @@ static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
if (i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], false))
aq_ret = I40E_ERR_TIMEOUT;
+ if ((0 == aq_ret) && vf->ctrl_netdev)
+ netif_carrier_off(vf->ctrl_netdev);
+
error_param:
/* send the response to the VF */
return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DISABLE_QUEUES,
@@ -3179,6 +3200,7 @@ int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
struct i40e_virtchnl_pf_event pfe;
struct i40e_hw *hw = &pf->hw;
struct i40e_vf *vf;
+ struct net_device *vf_netdev;
int abs_vf_id;
int ret = 0;
@@ -3219,6 +3241,17 @@ int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
ret = -EINVAL;
goto error_out;
}
+
+ vf_netdev = vf->ctrl_netdev;
+ if (vf_netdev) {
+ unsigned int flags = vf_netdev->flags;
+
+ if (vf->link_up)
+ dev_change_flags(vf_netdev, flags | IFF_UP);
+ else
+ dev_change_flags(vf_netdev, flags & ~IFF_UP);
+ }
+
/* Notify the VF of its new link state */
i40e_aq_send_msg_to_vf(hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT,
0, (u8 *)&pfe, sizeof(pfe), NULL);
--
2.7.4
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