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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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59f4d59b25
E830 adds hardware support to prevent the VF from overflowing the PF mailbox with VIRTCHNL messages. E830 will use the hardware feature (ICE_F_MBX_LIMIT) instead of the software solution ice_is_malicious_vf(). To prevent a VF from overflowing the PF, the PF sets the number of messages per VF that can be in the PF's mailbox queue (ICE_MBX_OVERFLOW_WATERMARK). When the PF processes a message from a VF, the PF decrements the per VF message count using the E830_MBX_VF_DEC_TRIG register. Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com> Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com> Tested-by: Rafal Romanowski <rafal.romanowski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2018, Intel Corporation. */
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#ifndef _ICE_VF_MBX_H_
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#define _ICE_VF_MBX_H_
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#include "ice_type.h"
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#include "ice_controlq.h"
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/* Defining the mailbox message threshold as 63 asynchronous
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* pending messages. Normal VF functionality does not require
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* sending more than 63 asynchronous pending message.
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*/
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#define ICE_ASYNC_VF_MSG_THRESHOLD 63
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#ifdef CONFIG_PCI_IOV
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int
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ice_aq_send_msg_to_vf(struct ice_hw *hw, u16 vfid, u32 v_opcode, u32 v_retval,
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u8 *msg, u16 msglen, struct ice_sq_cd *cd);
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u32 ice_conv_link_speed_to_virtchnl(bool adv_link_support, u16 link_speed);
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void ice_mbx_vf_dec_trig_e830(const struct ice_hw *hw,
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const struct ice_rq_event_info *event);
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void ice_mbx_vf_clear_cnt_e830(const struct ice_hw *hw, u16 vf_id);
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int
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ice_mbx_vf_state_handler(struct ice_hw *hw, struct ice_mbx_data *mbx_data,
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struct ice_mbx_vf_info *vf_info, bool *report_malvf);
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void ice_mbx_clear_malvf(struct ice_mbx_vf_info *vf_info);
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void ice_mbx_init_vf_info(struct ice_hw *hw, struct ice_mbx_vf_info *vf_info);
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void ice_mbx_init_snapshot(struct ice_hw *hw);
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#else /* CONFIG_PCI_IOV */
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static inline int
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ice_aq_send_msg_to_vf(struct ice_hw __always_unused *hw,
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u16 __always_unused vfid, u32 __always_unused v_opcode,
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u32 __always_unused v_retval, u8 __always_unused *msg,
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u16 __always_unused msglen,
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struct ice_sq_cd __always_unused *cd)
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{
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return 0;
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}
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static inline u32
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ice_conv_link_speed_to_virtchnl(bool __always_unused adv_link_support,
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u16 __always_unused link_speed)
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{
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return 0;
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}
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static inline void ice_mbx_init_snapshot(struct ice_hw *hw)
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{
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}
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static inline void
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ice_mbx_vf_dec_trig_e830(const struct ice_hw *hw,
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const struct ice_rq_event_info *event)
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{
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}
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#endif /* CONFIG_PCI_IOV */
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#endif /* _ICE_VF_MBX_H_ */
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