1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (c) 2019, Intel Corporation. */ 3 4 #ifndef _ICE_TXRX_LIB_H_ 5 #define _ICE_TXRX_LIB_H_ 6 #include "ice.h" 7 8 /** 9 * ice_test_staterr - tests bits in Rx descriptor status and error fields 10 * @rx_desc: pointer to receive descriptor (in le64 format) 11 * @stat_err_bits: value to mask 12 * 13 * This function does some fast chicanery in order to return the 14 * value of the mask which is really only used for boolean tests. 15 * The status_error_len doesn't need to be shifted because it begins 16 * at offset zero. 17 */ 18 static inline bool 19 ice_test_staterr(union ice_32b_rx_flex_desc *rx_desc, const u16 stat_err_bits) 20 { 21 return !!(rx_desc->wb.status_error0 & cpu_to_le16(stat_err_bits)); 22 } 23 24 static inline __le64 25 ice_build_ctob(u64 td_cmd, u64 td_offset, unsigned int size, u64 td_tag) 26 { 27 return cpu_to_le64(ICE_TX_DESC_DTYPE_DATA | 28 (td_cmd << ICE_TXD_QW1_CMD_S) | 29 (td_offset << ICE_TXD_QW1_OFFSET_S) | 30 ((u64)size << ICE_TXD_QW1_TX_BUF_SZ_S) | 31 (td_tag << ICE_TXD_QW1_L2TAG1_S)); 32 } 33 34 /** 35 * ice_xdp_ring_update_tail - Updates the XDP Tx ring tail register 36 * @xdp_ring: XDP Tx ring 37 * 38 * This function updates the XDP Tx ring tail register. 39 */ 40 static inline void ice_xdp_ring_update_tail(struct ice_ring *xdp_ring) 41 { 42 /* Force memory writes to complete before letting h/w 43 * know there are new descriptors to fetch. 44 */ 45 wmb(); 46 writel_relaxed(xdp_ring->next_to_use, xdp_ring->tail); 47 } 48 49 void ice_finalize_xdp_rx(struct ice_ring *rx_ring, unsigned int xdp_res); 50 int ice_xmit_xdp_buff(struct xdp_buff *xdp, struct ice_ring *xdp_ring); 51 int ice_xmit_xdp_ring(void *data, u16 size, struct ice_ring *xdp_ring); 52 void ice_release_rx_desc(struct ice_ring *rx_ring, u16 val); 53 void 54 ice_process_skb_fields(struct ice_ring *rx_ring, 55 union ice_32b_rx_flex_desc *rx_desc, 56 struct sk_buff *skb, u16 ptype); 57 void 58 ice_receive_skb(struct ice_ring *rx_ring, struct sk_buff *skb, u16 vlan_tag); 59 #endif /* !_ICE_TXRX_LIB_H_ */ 60