diff options
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_txrx_lib.h')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_txrx_lib.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_txrx_lib.h b/drivers/net/ethernet/intel/ice/ice_txrx_lib.h new file mode 100644 index 000000000000..ba9164dad9ae --- /dev/null +++ b/drivers/net/ethernet/intel/ice/ice_txrx_lib.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2019, Intel Corporation. */ + +#ifndef _ICE_TXRX_LIB_H_ +#define _ICE_TXRX_LIB_H_ +#include "ice.h" + +/** + * ice_test_staterr - tests bits in Rx descriptor status and error fields + * @rx_desc: pointer to receive descriptor (in le64 format) + * @stat_err_bits: value to mask + * + * This function does some fast chicanery in order to return the + * value of the mask which is really only used for boolean tests. + * The status_error_len doesn't need to be shifted because it begins + * at offset zero. + */ +static inline bool +ice_test_staterr(union ice_32b_rx_flex_desc *rx_desc, const u16 stat_err_bits) +{ + return !!(rx_desc->wb.status_error0 & cpu_to_le16(stat_err_bits)); +} + +static inline __le64 +build_ctob(u64 td_cmd, u64 td_offset, unsigned int size, u64 td_tag) +{ + return cpu_to_le64(ICE_TX_DESC_DTYPE_DATA | + (td_cmd << ICE_TXD_QW1_CMD_S) | + (td_offset << ICE_TXD_QW1_OFFSET_S) | + ((u64)size << ICE_TXD_QW1_TX_BUF_SZ_S) | + (td_tag << ICE_TXD_QW1_L2TAG1_S)); +} + +/** + * ice_xdp_ring_update_tail - Updates the XDP Tx ring tail register + * @xdp_ring: XDP Tx ring + * + * This function updates the XDP Tx ring tail register. + */ +static inline void ice_xdp_ring_update_tail(struct ice_ring *xdp_ring) +{ + /* Force memory writes to complete before letting h/w + * know there are new descriptors to fetch. + */ + wmb(); + writel_relaxed(xdp_ring->next_to_use, xdp_ring->tail); +} + +void ice_finalize_xdp_rx(struct ice_ring *rx_ring, unsigned int xdp_res); +int ice_xmit_xdp_buff(struct xdp_buff *xdp, struct ice_ring *xdp_ring); +int ice_xmit_xdp_ring(void *data, u16 size, struct ice_ring *xdp_ring); +void ice_release_rx_desc(struct ice_ring *rx_ring, u32 val); +void +ice_process_skb_fields(struct ice_ring *rx_ring, + union ice_32b_rx_flex_desc *rx_desc, + struct sk_buff *skb, u8 ptype); +void +ice_receive_skb(struct ice_ring *rx_ring, struct sk_buff *skb, u16 vlan_tag); +#endif /* !_ICE_TXRX_LIB_H_ */ |