1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (c) 2020 Intel Corporation */ 3 4 #ifndef _IGC_TSN_H_ 5 #define _IGC_TSN_H_ 6 7 #include <net/pkt_sched.h> 8 9 #define IGC_RX_MIN_FRAG_SIZE 60 10 #define SMD_FRAME_SIZE 60 11 12 enum igc_txd_popts_type { 13 SMD_V = 0x01, 14 SMD_R = 0x02, 15 }; 16 17 DECLARE_STATIC_KEY_FALSE(igc_fpe_enabled); 18 19 void igc_fpe_init(struct igc_adapter *adapter); 20 void igc_fpe_clear_preempt_queue(struct igc_adapter *adapter); 21 void igc_fpe_save_preempt_queue(struct igc_adapter *adapter, 22 const struct tc_mqprio_qopt_offload *mqprio); 23 u32 igc_fpe_get_supported_frag_size(u32 frag_size); 24 int igc_tsn_offload_apply(struct igc_adapter *adapter); 25 int igc_tsn_reset(struct igc_adapter *adapter); 26 void igc_tsn_adjust_txtime_offset(struct igc_adapter *adapter); 27 bool igc_tsn_is_taprio_activated_by_user(struct igc_adapter *adapter); 28 29 static inline bool igc_fpe_is_pmac_enabled(struct igc_adapter *adapter) 30 { 31 return static_branch_unlikely(&igc_fpe_enabled) && 32 adapter->fpe.mmsv.pmac_enabled; 33 } 34 35 static inline bool igc_fpe_handle_mpacket(struct igc_adapter *adapter, 36 union igc_adv_rx_desc *rx_desc, 37 unsigned int size, void *pktbuf) 38 { 39 u32 status_error = le32_to_cpu(rx_desc->wb.upper.status_error); 40 int smd; 41 42 smd = FIELD_GET(IGC_RXDADV_STAT_SMD_TYPE_MASK, status_error); 43 if (smd != IGC_RXD_STAT_SMD_TYPE_V && smd != IGC_RXD_STAT_SMD_TYPE_R) 44 return false; 45 46 if (size == SMD_FRAME_SIZE && mem_is_zero(pktbuf, SMD_FRAME_SIZE)) { 47 struct ethtool_mmsv *mmsv = &adapter->fpe.mmsv; 48 enum ethtool_mmsv_event event; 49 50 if (smd == IGC_RXD_STAT_SMD_TYPE_V) 51 event = ETHTOOL_MMSV_LP_SENT_VERIFY_MPACKET; 52 else 53 event = ETHTOOL_MMSV_LP_SENT_RESPONSE_MPACKET; 54 55 ethtool_mmsv_event_handle(mmsv, event); 56 } 57 58 return true; 59 } 60 61 static inline bool igc_fpe_transmitted_smd_v(union igc_adv_tx_desc *tx_desc) 62 { 63 u32 olinfo_status = le32_to_cpu(tx_desc->read.olinfo_status); 64 u8 smd = FIELD_GET(IGC_TXD_POPTS_SMD_MASK, olinfo_status); 65 66 return smd == SMD_V; 67 } 68 69 #endif /* _IGC_BASE_H */ 70