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linux/drivers/net/ethernet/intel/ice/ice_eswitch.h

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ice: support basic E-Switch mode control Write set and get eswitch mode functions used by devlink ops. Use new pf struct member eswitch_mode to track current eswitch mode in driver. Changing eswitch mode is only allowed when there are no VFs created. Create new file for eswitch related code. Add config flag ICE_SWITCHDEV to allow user to choose if switchdev support should be enabled or disabled. Use case examples: - show current eswitch mode ('legacy' is the default one) [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode legacy - move to 'switchdev' mode [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode switchdev [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode switchdev - create 2 VFs [root@localhost]# echo 2 > /sys/class/net/ens4f1/device/sriov_numvfs - unsuccessful attempt to change eswitch mode while VFs are created [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode legacy devlink answers: Operation not supported - destroy VFs [root@localhost]# echo 0 > /sys/class/net/ens4f1/device/sriov_numvfs - restore 'legacy' mode [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode legacy [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode legacy Co-developed-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:48 -07:00
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2019-2021, Intel Corporation. */
#ifndef _ICE_ESWITCH_H_
#define _ICE_ESWITCH_H_
#include <net/devlink.h>
#ifdef CONFIG_ICE_SWITCHDEV
ice: add VF representors one by one Implement adding representors one by one. Always set switchdev environment when first representor is being added and clear environment when last one is being removed. Basic switchdev configuration remains the same. Code related to creating and configuring representor was changed. Instead of setting whole representors in one function handle only one representor in setup function. The same with removing representors. Stop representors when new one is being added or removed. Stop means, disabling napi, stopping traffic and removing slow path rule. It is needed because ::q_id will change after remapping, so each representor will need new rule. When representor are stopped rebuild control plane VSI with one more or one less queue. One more if new representor is being added, one less if representor is being removed. Bridge port is removed during unregister_netdev() call on PR, so there is no need to call it from driver side. After that do remap new queues to correct vector. At the end start all representors (napi enable, start queues, add slow path rule). Reviewed-by: Piotr Raczynski <piotr.raczynski@intel.com> Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2023-10-24 13:09:27 +02:00
void ice_eswitch_detach(struct ice_pf *pf, struct ice_vf *vf);
int
ice_eswitch_attach(struct ice_pf *pf, struct ice_vf *vf);
ice: remove switchdev control plane VSI For slow-path Rx and Tx PF VSI is used. There is no need to have control plane VSI. Remove all code related to it. Eswitch rebuild can't fail without rebuilding control plane VSI. Return void from ice_eswitch_rebuild(). Reviewed-by: Marcin Szycik <marcin.szycik@linux.intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2024-03-01 12:54:11 +01:00
void ice_eswitch_rebuild(struct ice_pf *pf);
ice: set and release switchdev environment Switchdev environment has to be set up when user create VFs and eswitch mode is switchdev. Release is done when user delete all VFs. Data path in this implementation is based on control plane VSI. This VSI is used to pass traffic from port representors to corresponding VFs and vice versa. Default TX rule has to be added to forward packet to control plane VSI. This will redirect packets from VFs which don't match other rules to control plane VSI. On RX side default rule is added on uplink VSI to receive all traffic that doesn't match other rules. When setting switchdev environment all other rules from VFs should be removed. Packet to VFs will be forwarded by control plane VSI. As VF without any mac rules can't send any packet because of antispoof mechanism, VSI antispoof should be turned off on each VFs. To send packet from representor to correct VSI, destination VSI field in TX descriptor will have to be filled. Allow that by setting destination override bit in control plane VSI security config. Packet from VFs will be received on control plane VSI. Driver should decide to which netdev forward the packet. Decision is made based on src_vsi field from descriptor. There is a target netdev list in control plane VSI struct which choose netdev based on src_vsi number. Co-developed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:54 -07:00
ice: support basic E-Switch mode control Write set and get eswitch mode functions used by devlink ops. Use new pf struct member eswitch_mode to track current eswitch mode in driver. Changing eswitch mode is only allowed when there are no VFs created. Create new file for eswitch related code. Add config flag ICE_SWITCHDEV to allow user to choose if switchdev support should be enabled or disabled. Use case examples: - show current eswitch mode ('legacy' is the default one) [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode legacy - move to 'switchdev' mode [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode switchdev [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode switchdev - create 2 VFs [root@localhost]# echo 2 > /sys/class/net/ens4f1/device/sriov_numvfs - unsuccessful attempt to change eswitch mode while VFs are created [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode legacy devlink answers: Operation not supported - destroy VFs [root@localhost]# echo 0 > /sys/class/net/ens4f1/device/sriov_numvfs - restore 'legacy' mode [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode legacy [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode legacy Co-developed-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:48 -07:00
int ice_eswitch_mode_get(struct devlink *devlink, u16 *mode);
int
ice_eswitch_mode_set(struct devlink *devlink, u16 mode,
struct netlink_ext_ack *extack);
bool ice_is_eswitch_mode_switchdev(struct ice_pf *pf);
ice: enable/disable switchdev when managing VFs Only way to enable switchdev is to create VFs when the eswitch mode is set to switchdev. Check if correct mode is set and enable switchdev in function which creating VFs. Disable switchdev when user change number of VFs to 0. Changing eswitch mode back to legacy when VFs are created in switchdev mode isn't allowed. As switchdev takes care of managing filter rules, adding new rules on VF is blocked. In case of resetting VF driver has to update pointer in ice_repr struct, because after reset VSI related things can change. Co-developed-by: Wojciech Drewek <wojciech.drewek@intel.com> Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:56 -07:00
ice: make representor code generic Representor code needs to be independent from specific device type, like in this case VF. Make generic add / remove representor function and specific add VF / rem VF function. New device types will follow this scheme. In bridge offload code there is a need to get representor pointer based on VSI. Implement helper function to achieve that. Reviewed-by: Piotr Raczynski <piotr.raczynski@intel.com> Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2023-10-24 13:09:22 +02:00
void ice_eswitch_update_repr(unsigned long repr_id, struct ice_vsi *vsi);
ice: rebuild switchdev when resetting all VFs As resetting all VFs behaves mostly like creating new VFs also eswitch infrastructure has to be recreated. The easiest way to do that is to rebuild eswitch after resetting VFs. Implement helper functions to start and stop all representors queues. This is used to disable traffic on port representors. In rebuild path: - NAPI has to be disabled - eswitch environment has to be set up - new port representors have to be created, because the old one had pointer to not existing VFs - new control plane VSI ring should be remapped - NAPI hast to be enabled - rxdid has to be set to FLEX_NIC_2, because this descriptor id support source_vsi, which is needed on control plane VSI queues - port representors queues have to be started Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:57 -07:00
void ice_eswitch_stop_all_tx_queues(struct ice_pf *pf);
ice: switchdev slow path Slow path means allowing packet to go from uplink to representor and from representor to correct VF on Rx site and from VF to representor and to uplink on Tx site. To accomplish this driver, has to set correct Tx descriptor. When packet is sent from representor to VF, destination should be set to VF VSI. When packet is sent from uplink port destination should be uplink to bypass switch infrastructure and send packet outside. On Rx site driver should check source VSI field from Rx descriptor and based on that forward packed to correct netdev. To allow this there is a target netdevs table in control plane VSI struct. Co-developed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:58 -07:00
void ice_eswitch_set_target_vsi(struct sk_buff *skb,
struct ice_tx_offload_params *off);
netdev_tx_t
ice_eswitch_port_start_xmit(struct sk_buff *skb, struct net_device *netdev);
ice: do switchdev slow-path Rx using PF VSI Add an ICE_RX_FLAG_MULTIDEV flag to Rx ring. If it is set try to find correct port representor. Do it based on src_vsi value stored in flex descriptor. Ids of representor pointers stored in xarray are equal to corresponding src_vsi value. Thanks to that we can directly get correct representor if we have src_vsi value. Set multidev flag during ring configuration. If the mode is switchdev, change the ring descriptor to the one that contains src_vsi value. PF netdev should be reconfigured, do it by calling ice_down() and ice_up() if the netdev was up before configuring switchdev. Reviewed-by: Marcin Szycik <marcin.szycik@linux.intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2024-03-01 12:54:13 +01:00
struct net_device *ice_eswitch_get_target(struct ice_rx_ring *rx_ring,
union ice_32b_rx_flex_desc *rx_desc);
ice: support basic E-Switch mode control Write set and get eswitch mode functions used by devlink ops. Use new pf struct member eswitch_mode to track current eswitch mode in driver. Changing eswitch mode is only allowed when there are no VFs created. Create new file for eswitch related code. Add config flag ICE_SWITCHDEV to allow user to choose if switchdev support should be enabled or disabled. Use case examples: - show current eswitch mode ('legacy' is the default one) [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode legacy - move to 'switchdev' mode [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode switchdev [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode switchdev - create 2 VFs [root@localhost]# echo 2 > /sys/class/net/ens4f1/device/sriov_numvfs - unsuccessful attempt to change eswitch mode while VFs are created [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode legacy devlink answers: Operation not supported - destroy VFs [root@localhost]# echo 0 > /sys/class/net/ens4f1/device/sriov_numvfs - restore 'legacy' mode [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode legacy [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode legacy Co-developed-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:48 -07:00
#else /* CONFIG_ICE_SWITCHDEV */
ice: add VF representors one by one Implement adding representors one by one. Always set switchdev environment when first representor is being added and clear environment when last one is being removed. Basic switchdev configuration remains the same. Code related to creating and configuring representor was changed. Instead of setting whole representors in one function handle only one representor in setup function. The same with removing representors. Stop representors when new one is being added or removed. Stop means, disabling napi, stopping traffic and removing slow path rule. It is needed because ::q_id will change after remapping, so each representor will need new rule. When representor are stopped rebuild control plane VSI with one more or one less queue. One more if new representor is being added, one less if representor is being removed. Bridge port is removed during unregister_netdev() call on PR, so there is no need to call it from driver side. After that do remap new queues to correct vector. At the end start all representors (napi enable, start queues, add slow path rule). Reviewed-by: Piotr Raczynski <piotr.raczynski@intel.com> Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2023-10-24 13:09:27 +02:00
static inline void ice_eswitch_detach(struct ice_pf *pf, struct ice_vf *vf) { }
static inline int
ice_eswitch_attach(struct ice_pf *pf, struct ice_vf *vf)
{
return -EOPNOTSUPP;
}
ice: set and release switchdev environment Switchdev environment has to be set up when user create VFs and eswitch mode is switchdev. Release is done when user delete all VFs. Data path in this implementation is based on control plane VSI. This VSI is used to pass traffic from port representors to corresponding VFs and vice versa. Default TX rule has to be added to forward packet to control plane VSI. This will redirect packets from VFs which don't match other rules to control plane VSI. On RX side default rule is added on uplink VSI to receive all traffic that doesn't match other rules. When setting switchdev environment all other rules from VFs should be removed. Packet to VFs will be forwarded by control plane VSI. As VF without any mac rules can't send any packet because of antispoof mechanism, VSI antispoof should be turned off on each VFs. To send packet from representor to correct VSI, destination VSI field in TX descriptor will have to be filled. Allow that by setting destination override bit in control plane VSI security config. Packet from VFs will be received on control plane VSI. Driver should decide to which netdev forward the packet. Decision is made based on src_vsi field from descriptor. There is a target netdev list in control plane VSI struct which choose netdev based on src_vsi number. Co-developed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:54 -07:00
ice: rebuild switchdev when resetting all VFs As resetting all VFs behaves mostly like creating new VFs also eswitch infrastructure has to be recreated. The easiest way to do that is to rebuild eswitch after resetting VFs. Implement helper functions to start and stop all representors queues. This is used to disable traffic on port representors. In rebuild path: - NAPI has to be disabled - eswitch environment has to be set up - new port representors have to be created, because the old one had pointer to not existing VFs - new control plane VSI ring should be remapped - NAPI hast to be enabled - rxdid has to be set to FLEX_NIC_2, because this descriptor id support source_vsi, which is needed on control plane VSI queues - port representors queues have to be started Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:57 -07:00
static inline void ice_eswitch_stop_all_tx_queues(struct ice_pf *pf) { }
ice: switchdev slow path Slow path means allowing packet to go from uplink to representor and from representor to correct VF on Rx site and from VF to representor and to uplink on Tx site. To accomplish this driver, has to set correct Tx descriptor. When packet is sent from representor to VF, destination should be set to VF VSI. When packet is sent from uplink port destination should be uplink to bypass switch infrastructure and send packet outside. On Rx site driver should check source VSI field from Rx descriptor and based on that forward packed to correct netdev. To allow this there is a target netdevs table in control plane VSI struct. Co-developed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:58 -07:00
static inline void
ice_eswitch_set_target_vsi(struct sk_buff *skb,
struct ice_tx_offload_params *off) { }
ice: remove VF pointer reference in eswitch code Make eswitch code generic by removing VF pointer reference in functions. It is needed to support eswitch mode for other type of devices. Previously queue id used for Rx was based on VF number. Use ::q_id saved in port representor instead. After adding or removing port representor ::q_id value can change. It isn't good idea to iterate over representors list using this value. Use xa_find starting from the first one instead to get next port representor to remap. The number of port representors has to be equal to ::num_rx/tx_q. Warn if it isn't true. Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2023-10-24 13:09:21 +02:00
static inline void
ice: make representor code generic Representor code needs to be independent from specific device type, like in this case VF. Make generic add / remove representor function and specific add VF / rem VF function. New device types will follow this scheme. In bridge offload code there is a need to get representor pointer based on VSI. Implement helper function to achieve that. Reviewed-by: Piotr Raczynski <piotr.raczynski@intel.com> Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2023-10-24 13:09:22 +02:00
ice_eswitch_update_repr(unsigned long repr_id, struct ice_vsi *vsi) { }
ice: enable/disable switchdev when managing VFs Only way to enable switchdev is to create VFs when the eswitch mode is set to switchdev. Check if correct mode is set and enable switchdev in function which creating VFs. Disable switchdev when user change number of VFs to 0. Changing eswitch mode back to legacy when VFs are created in switchdev mode isn't allowed. As switchdev takes care of managing filter rules, adding new rules on VF is blocked. In case of resetting VF driver has to update pointer in ice_repr struct, because after reset VSI related things can change. Co-developed-by: Wojciech Drewek <wojciech.drewek@intel.com> Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:56 -07:00
ice: set and release switchdev environment Switchdev environment has to be set up when user create VFs and eswitch mode is switchdev. Release is done when user delete all VFs. Data path in this implementation is based on control plane VSI. This VSI is used to pass traffic from port representors to corresponding VFs and vice versa. Default TX rule has to be added to forward packet to control plane VSI. This will redirect packets from VFs which don't match other rules to control plane VSI. On RX side default rule is added on uplink VSI to receive all traffic that doesn't match other rules. When setting switchdev environment all other rules from VFs should be removed. Packet to VFs will be forwarded by control plane VSI. As VF without any mac rules can't send any packet because of antispoof mechanism, VSI antispoof should be turned off on each VFs. To send packet from representor to correct VSI, destination VSI field in TX descriptor will have to be filled. Allow that by setting destination override bit in control plane VSI security config. Packet from VFs will be received on control plane VSI. Driver should decide to which netdev forward the packet. Decision is made based on src_vsi field from descriptor. There is a target netdev list in control plane VSI struct which choose netdev based on src_vsi number. Co-developed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:54 -07:00
static inline int ice_eswitch_configure(struct ice_pf *pf)
{
ice: allow creating VFs for !CONFIG_NET_SWITCHDEV Currently for !CONFIG_NET_SWITCHDEV kernel builds it is not possible to create VFs properly as call to ice_eswitch_configure() returns -EOPNOTSUPP for us. This is because CONFIG_ICE_SWITCHDEV depends on CONFIG_NET_SWITCHDEV. Change the ice_eswitch_configure() implementation for !CONFIG_ICE_SWITCHDEV to return 0 instead -EOPNOTSUPP and let ice_ena_vfs() finish its work properly. CC: Grzegorz Nitka <grzegorz.nitka@intel.com> Fixes: 1a1c40df2e80 ("ice: set and release switchdev environment") Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@intel.com> Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2022-04-01 14:54:38 +02:00
return 0;
ice: set and release switchdev environment Switchdev environment has to be set up when user create VFs and eswitch mode is switchdev. Release is done when user delete all VFs. Data path in this implementation is based on control plane VSI. This VSI is used to pass traffic from port representors to corresponding VFs and vice versa. Default TX rule has to be added to forward packet to control plane VSI. This will redirect packets from VFs which don't match other rules to control plane VSI. On RX side default rule is added on uplink VSI to receive all traffic that doesn't match other rules. When setting switchdev environment all other rules from VFs should be removed. Packet to VFs will be forwarded by control plane VSI. As VF without any mac rules can't send any packet because of antispoof mechanism, VSI antispoof should be turned off on each VFs. To send packet from representor to correct VSI, destination VSI field in TX descriptor will have to be filled. Allow that by setting destination override bit in control plane VSI security config. Packet from VFs will be received on control plane VSI. Driver should decide to which netdev forward the packet. Decision is made based on src_vsi field from descriptor. There is a target netdev list in control plane VSI struct which choose netdev based on src_vsi number. Co-developed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:54 -07:00
}
ice: rebuild switchdev when resetting all VFs As resetting all VFs behaves mostly like creating new VFs also eswitch infrastructure has to be recreated. The easiest way to do that is to rebuild eswitch after resetting VFs. Implement helper functions to start and stop all representors queues. This is used to disable traffic on port representors. In rebuild path: - NAPI has to be disabled - eswitch environment has to be set up - new port representors have to be created, because the old one had pointer to not existing VFs - new control plane VSI ring should be remapped - NAPI hast to be enabled - rxdid has to be set to FLEX_NIC_2, because this descriptor id support source_vsi, which is needed on control plane VSI queues - port representors queues have to be started Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:57 -07:00
static inline int ice_eswitch_rebuild(struct ice_pf *pf)
{
return -EOPNOTSUPP;
}
ice: set and release switchdev environment Switchdev environment has to be set up when user create VFs and eswitch mode is switchdev. Release is done when user delete all VFs. Data path in this implementation is based on control plane VSI. This VSI is used to pass traffic from port representors to corresponding VFs and vice versa. Default TX rule has to be added to forward packet to control plane VSI. This will redirect packets from VFs which don't match other rules to control plane VSI. On RX side default rule is added on uplink VSI to receive all traffic that doesn't match other rules. When setting switchdev environment all other rules from VFs should be removed. Packet to VFs will be forwarded by control plane VSI. As VF without any mac rules can't send any packet because of antispoof mechanism, VSI antispoof should be turned off on each VFs. To send packet from representor to correct VSI, destination VSI field in TX descriptor will have to be filled. Allow that by setting destination override bit in control plane VSI security config. Packet from VFs will be received on control plane VSI. Driver should decide to which netdev forward the packet. Decision is made based on src_vsi field from descriptor. There is a target netdev list in control plane VSI struct which choose netdev based on src_vsi number. Co-developed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:54 -07:00
static inline int ice_eswitch_mode_get(struct devlink *devlink, u16 *mode)
ice: support basic E-Switch mode control Write set and get eswitch mode functions used by devlink ops. Use new pf struct member eswitch_mode to track current eswitch mode in driver. Changing eswitch mode is only allowed when there are no VFs created. Create new file for eswitch related code. Add config flag ICE_SWITCHDEV to allow user to choose if switchdev support should be enabled or disabled. Use case examples: - show current eswitch mode ('legacy' is the default one) [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode legacy - move to 'switchdev' mode [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode switchdev [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode switchdev - create 2 VFs [root@localhost]# echo 2 > /sys/class/net/ens4f1/device/sriov_numvfs - unsuccessful attempt to change eswitch mode while VFs are created [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode legacy devlink answers: Operation not supported - destroy VFs [root@localhost]# echo 0 > /sys/class/net/ens4f1/device/sriov_numvfs - restore 'legacy' mode [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode legacy [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode legacy Co-developed-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:48 -07:00
{
return DEVLINK_ESWITCH_MODE_LEGACY;
}
static inline int
ice_eswitch_mode_set(struct devlink *devlink, u16 mode,
struct netlink_ext_ack *extack)
{
return -EOPNOTSUPP;
}
ice: set and release switchdev environment Switchdev environment has to be set up when user create VFs and eswitch mode is switchdev. Release is done when user delete all VFs. Data path in this implementation is based on control plane VSI. This VSI is used to pass traffic from port representors to corresponding VFs and vice versa. Default TX rule has to be added to forward packet to control plane VSI. This will redirect packets from VFs which don't match other rules to control plane VSI. On RX side default rule is added on uplink VSI to receive all traffic that doesn't match other rules. When setting switchdev environment all other rules from VFs should be removed. Packet to VFs will be forwarded by control plane VSI. As VF without any mac rules can't send any packet because of antispoof mechanism, VSI antispoof should be turned off on each VFs. To send packet from representor to correct VSI, destination VSI field in TX descriptor will have to be filled. Allow that by setting destination override bit in control plane VSI security config. Packet from VFs will be received on control plane VSI. Driver should decide to which netdev forward the packet. Decision is made based on src_vsi field from descriptor. There is a target netdev list in control plane VSI struct which choose netdev based on src_vsi number. Co-developed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:54 -07:00
static inline bool ice_is_eswitch_mode_switchdev(struct ice_pf *pf)
ice: support basic E-Switch mode control Write set and get eswitch mode functions used by devlink ops. Use new pf struct member eswitch_mode to track current eswitch mode in driver. Changing eswitch mode is only allowed when there are no VFs created. Create new file for eswitch related code. Add config flag ICE_SWITCHDEV to allow user to choose if switchdev support should be enabled or disabled. Use case examples: - show current eswitch mode ('legacy' is the default one) [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode legacy - move to 'switchdev' mode [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode switchdev [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode switchdev - create 2 VFs [root@localhost]# echo 2 > /sys/class/net/ens4f1/device/sriov_numvfs - unsuccessful attempt to change eswitch mode while VFs are created [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode legacy devlink answers: Operation not supported - destroy VFs [root@localhost]# echo 0 > /sys/class/net/ens4f1/device/sriov_numvfs - restore 'legacy' mode [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode legacy [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode legacy Co-developed-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:48 -07:00
{
return false;
}
ice: switchdev slow path Slow path means allowing packet to go from uplink to representor and from representor to correct VF on Rx site and from VF to representor and to uplink on Tx site. To accomplish this driver, has to set correct Tx descriptor. When packet is sent from representor to VF, destination should be set to VF VSI. When packet is sent from uplink port destination should be uplink to bypass switch infrastructure and send packet outside. On Rx site driver should check source VSI field from Rx descriptor and based on that forward packed to correct netdev. To allow this there is a target netdevs table in control plane VSI struct. Co-developed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:58 -07:00
static inline netdev_tx_t
ice_eswitch_port_start_xmit(struct sk_buff *skb, struct net_device *netdev)
{
return NETDEV_TX_BUSY;
}
ice: do switchdev slow-path Rx using PF VSI Add an ICE_RX_FLAG_MULTIDEV flag to Rx ring. If it is set try to find correct port representor. Do it based on src_vsi value stored in flex descriptor. Ids of representor pointers stored in xarray are equal to corresponding src_vsi value. Thanks to that we can directly get correct representor if we have src_vsi value. Set multidev flag during ring configuration. If the mode is switchdev, change the ring descriptor to the one that contains src_vsi value. PF netdev should be reconfigured, do it by calling ice_down() and ice_up() if the netdev was up before configuring switchdev. Reviewed-by: Marcin Szycik <marcin.szycik@linux.intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2024-03-01 12:54:13 +01:00
static inline struct net_device *
ice_eswitch_get_target(struct ice_rx_ring *rx_ring,
union ice_32b_rx_flex_desc *rx_desc)
{
return rx_ring->netdev;
}
ice: support basic E-Switch mode control Write set and get eswitch mode functions used by devlink ops. Use new pf struct member eswitch_mode to track current eswitch mode in driver. Changing eswitch mode is only allowed when there are no VFs created. Create new file for eswitch related code. Add config flag ICE_SWITCHDEV to allow user to choose if switchdev support should be enabled or disabled. Use case examples: - show current eswitch mode ('legacy' is the default one) [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode legacy - move to 'switchdev' mode [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode switchdev [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode switchdev - create 2 VFs [root@localhost]# echo 2 > /sys/class/net/ens4f1/device/sriov_numvfs - unsuccessful attempt to change eswitch mode while VFs are created [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode legacy devlink answers: Operation not supported - destroy VFs [root@localhost]# echo 0 > /sys/class/net/ens4f1/device/sriov_numvfs - restore 'legacy' mode [root@localhost]# devlink dev eswitch set pci/0000:03:00.1 mode legacy [root@localhost]# devlink dev eswitch show pci/0000:03:00.1 pci/0000:03:00.1: mode legacy Co-developed-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com> Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-08-19 17:08:48 -07:00
#endif /* CONFIG_ICE_SWITCHDEV */
#endif /* _ICE_ESWITCH_H_ */
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