/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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/* Copyright (c) 2019 Mellanox Technologies. */
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#ifndef __MLX5_EN_XSK_RX_H__
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#define __MLX5_EN_XSK_RX_H__
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#include "en.h"
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#include <net/xdp_sock_drv.h>
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/* RX data path */
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struct sk_buff *mlx5e_xsk_skb_from_cqe_mpwrq_linear(struct mlx5e_rq *rq,
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struct mlx5e_mpw_info *wi,
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u16 cqe_bcnt,
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u32 head_offset,
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u32 page_idx);
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struct sk_buff *mlx5e_xsk_skb_from_cqe_linear(struct mlx5e_rq *rq,
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struct mlx5_cqe64 *cqe,
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struct mlx5e_wqe_frag_info *wi,
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u32 cqe_bcnt);
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static inline int mlx5e_xsk_page_alloc_pool(struct mlx5e_rq *rq,
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struct mlx5e_dma_info *dma_info)
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{
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dma_info->xsk = xsk_buff_alloc(rq->xsk_pool);
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if (!dma_info->xsk)
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return -ENOMEM;
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/* Store the DMA address without headroom. In striding RQ case, we just
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* provide pages for UMR, and headroom is counted at the setup stage
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* when creating a WQE. In non-striding RQ case, headroom is accounted
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* in mlx5e_alloc_rx_wqe.
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*/
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dma_info->addr = xsk_buff_xdp_get_frame_dma(dma_info->xsk);
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return 0;
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}
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static inline bool mlx5e_xsk_update_rx_wakeup(struct mlx5e_rq *rq, bool alloc_err)
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{
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if (!xsk_uses_need_wakeup(rq->xsk_pool))
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return alloc_err;
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if (unlikely(alloc_err))
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xsk_set_rx_need_wakeup(rq->xsk_pool);
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else
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xsk_clear_rx_need_wakeup(rq->xsk_pool);
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return false;
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}
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#endif /* __MLX5_EN_XSK_RX_H__ */
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