f5396b8a66
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>
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2019-2021, Intel Corporation. */
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#ifndef _ICE_ESWITCH_H_
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#define _ICE_ESWITCH_H_
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#include <net/devlink.h>
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#ifdef CONFIG_ICE_SWITCHDEV
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void ice_eswitch_release(struct ice_pf *pf);
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int ice_eswitch_configure(struct ice_pf *pf);
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int ice_eswitch_rebuild(struct ice_pf *pf);
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int ice_eswitch_mode_get(struct devlink *devlink, u16 *mode);
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int
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ice_eswitch_mode_set(struct devlink *devlink, u16 mode,
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struct netlink_ext_ack *extack);
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bool ice_is_eswitch_mode_switchdev(struct ice_pf *pf);
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void ice_eswitch_update_repr(struct ice_vsi *vsi);
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void ice_eswitch_stop_all_tx_queues(struct ice_pf *pf);
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struct net_device *
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ice_eswitch_get_target_netdev(struct ice_ring *rx_ring,
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union ice_32b_rx_flex_desc *rx_desc);
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void ice_eswitch_set_target_vsi(struct sk_buff *skb,
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struct ice_tx_offload_params *off);
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netdev_tx_t
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ice_eswitch_port_start_xmit(struct sk_buff *skb, struct net_device *netdev);
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#else /* CONFIG_ICE_SWITCHDEV */
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static inline void ice_eswitch_release(struct ice_pf *pf) { }
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static inline void ice_eswitch_stop_all_tx_queues(struct ice_pf *pf) { }
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static inline void
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ice_eswitch_set_target_vsi(struct sk_buff *skb,
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struct ice_tx_offload_params *off) { }
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static inline void ice_eswitch_update_repr(struct ice_vsi *vsi) { }
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static inline int ice_eswitch_configure(struct ice_pf *pf)
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{
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return -EOPNOTSUPP;
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}
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static inline int ice_eswitch_rebuild(struct ice_pf *pf)
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{
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return -EOPNOTSUPP;
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}
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static inline int ice_eswitch_mode_get(struct devlink *devlink, u16 *mode)
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{
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return DEVLINK_ESWITCH_MODE_LEGACY;
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}
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static inline int
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ice_eswitch_mode_set(struct devlink *devlink, u16 mode,
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struct netlink_ext_ack *extack)
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{
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return -EOPNOTSUPP;
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}
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static inline bool ice_is_eswitch_mode_switchdev(struct ice_pf *pf)
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{
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return false;
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}
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static inline struct net_device *
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ice_eswitch_get_target_netdev(struct ice_ring *rx_ring,
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union ice_32b_rx_flex_desc *rx_desc)
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{
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return rx_ring->netdev;
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}
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static inline netdev_tx_t
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ice_eswitch_port_start_xmit(struct sk_buff *skb, struct net_device *netdev)
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{
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return NETDEV_TX_BUSY;
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}
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#endif /* CONFIG_ICE_SWITCHDEV */
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#endif /* _ICE_ESWITCH_H_ */
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