diff options
author | Tariq Toukan <tariqt@mellanox.com> | 2018-07-15 10:28:44 +0300 |
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committer | Saeed Mahameed <saeedm@mellanox.com> | 2018-07-26 15:23:53 -0700 |
commit | 159d21313423b5ffe301834273cba79e915c65ee (patch) | |
tree | 322fac6975450f715b4b624498b140ba6164bda2 /drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h | |
parent | a26a5bdf3ee2da419ba2c2baa54f467103dc8cc5 (diff) | |
download | linux-159d21313423b5ffe301834273cba79e915c65ee.tar.bz2 |
net/mlx5e: Move XDP related code into new XDP files
Take XDP code out of the general EN header and RX file into
new XDP files.
Currently, XDP-SQ resides only within an RQ and used from a
single flow (XDP_TX) triggered upon RX completions.
In a downstream patch, additional type of XDP-SQ instances will be
presented and used for the XDP_REDIRECT flow, totally unrelated to
the RX context.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h new file mode 100644 index 000000000000..a8a856a82c63 --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2018, Mellanox Technologies. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef __MLX5_EN_XDP_H__ +#define __MLX5_EN_XDP_H__ + +#include "en.h" + +#define MLX5E_XDP_MAX_MTU ((int)(PAGE_SIZE - \ + MLX5_SKB_FRAG_SZ(XDP_PACKET_HEADROOM))) +#define MLX5E_XDP_MIN_INLINE (ETH_HLEN + VLAN_HLEN) +#define MLX5E_XDP_TX_DS_COUNT \ + ((sizeof(struct mlx5e_tx_wqe) / MLX5_SEND_WQE_DS) + 1 /* SG DS */) + +bool mlx5e_xdp_handle(struct mlx5e_rq *rq, struct mlx5e_dma_info *di, + void *va, u16 *rx_headroom, u32 *len); +bool mlx5e_poll_xdpsq_cq(struct mlx5e_cq *cq); +void mlx5e_free_xdpsq_descs(struct mlx5e_xdpsq *sq); + +bool mlx5e_xmit_xdp_frame(struct mlx5e_rq *rq, struct mlx5e_dma_info *di, + const struct xdp_buff *xdp); + +static inline void mlx5e_xmit_xdp_doorbell(struct mlx5e_xdpsq *sq) +{ + struct mlx5_wq_cyc *wq = &sq->wq; + struct mlx5e_tx_wqe *wqe; + u16 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc - 1); /* last pi */ + + wqe = mlx5_wq_cyc_get_wqe(wq, pi); + + mlx5e_notify_hw(wq, sq->pc, sq->uar_map, &wqe->ctrl); +} + +#endif |