1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2 /* Copyright (c) 2019 Mellanox Technologies. */
3
4 #ifndef __MLX5_EN_XSK_RX_H__
5 #define __MLX5_EN_XSK_RX_H__
6
7 #include "en.h"
8 #include <net/xdp_sock_drv.h>
9
10 /* RX data path */
11
12 struct sk_buff *mlx5e_xsk_skb_from_cqe_mpwrq_linear(struct mlx5e_rq *rq,
13 struct mlx5e_mpw_info *wi,
14 u16 cqe_bcnt,
15 u32 head_offset,
16 u32 page_idx);
17 struct sk_buff *mlx5e_xsk_skb_from_cqe_linear(struct mlx5e_rq *rq,
18 struct mlx5_cqe64 *cqe,
19 struct mlx5e_wqe_frag_info *wi,
20 u32 cqe_bcnt);
21
mlx5e_xsk_page_alloc_pool(struct mlx5e_rq * rq,struct mlx5e_dma_info * dma_info)22 static inline int mlx5e_xsk_page_alloc_pool(struct mlx5e_rq *rq,
23 struct mlx5e_dma_info *dma_info)
24 {
25 dma_info->xsk = xsk_buff_alloc(rq->xsk_pool);
26 if (!dma_info->xsk)
27 return -ENOMEM;
28
29 /* Store the DMA address without headroom. In striding RQ case, we just
30 * provide pages for UMR, and headroom is counted at the setup stage
31 * when creating a WQE. In non-striding RQ case, headroom is accounted
32 * in mlx5e_alloc_rx_wqe.
33 */
34 dma_info->addr = xsk_buff_xdp_get_frame_dma(dma_info->xsk);
35
36 return 0;
37 }
38
mlx5e_xsk_update_rx_wakeup(struct mlx5e_rq * rq,bool alloc_err)39 static inline bool mlx5e_xsk_update_rx_wakeup(struct mlx5e_rq *rq, bool alloc_err)
40 {
41 if (!xsk_uses_need_wakeup(rq->xsk_pool))
42 return alloc_err;
43
44 if (unlikely(alloc_err))
45 xsk_set_rx_need_wakeup(rq->xsk_pool);
46 else
47 xsk_clear_rx_need_wakeup(rq->xsk_pool);
48
49 return false;
50 }
51
52 #endif /* __MLX5_EN_XSK_RX_H__ */
53
