net/mlx5e: Introduce mlx5e_channels API to get RQNs

Currently, struct mlx5e_channels is defined in en.h, along with a lot of
other stuff. In the following commit mlx5e_rx_res will need to get RQNs
(RQ hardware IDs), given a pointer to mlx5e_channels and the channel
index. In order to make it possible without including the whole en.h,
this commit introduces functions that will hide the implementation
details of mlx5e_channels.

Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/Makefile
index 6378dc815df7578cd83b3f7a0744c6b5cc9e4043..e8522ccb3519021eb0a37a80c5fa3b7889b09734 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/Makefile
+++ b/drivers/net/ethernet/mellanox/mlx5/core/Makefile
@@ -28,7 +28,7 @@ mlx5_core-$(CONFIG_MLX5_CORE_EN) += en_main.o en_common.o en_fs.o en_ethtool.o \
                en/reporter_tx.o en/reporter_rx.o en/params.o en/xsk/pool.o \
                en/xsk/setup.o en/xsk/rx.o en/xsk/tx.o en/devlink.o en/ptp.o \
                en/qos.o en/trap.o en/fs_tt_redirect.o en/rqt.o en/tir.o \
-               en/rx_res.o
+               en/rx_res.o en/channels.o
 
 #
 # Netdev extra

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/channels.c b/drivers/net/ethernet/mellanox/mlx5/core/en/channels.c
new file mode 100644 (file)
index 0000000..e7c14c0
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/channels.c
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
+/* Copyright (c) 2021, Mellanox Technologies inc. All rights reserved. */
+
+#include "channels.h"
+#include "en.h"
+#include "en/ptp.h"
+
+unsigned int mlx5e_channels_get_num(struct mlx5e_channels *chs)
+{
+       return chs->num;
+}
+
+void mlx5e_channels_get_regular_rqn(struct mlx5e_channels *chs, unsigned int ix, u32 *rqn)
+{
+       struct mlx5e_channel *c;
+
+       WARN_ON(ix >= mlx5e_channels_get_num(chs));
+       c = chs->c[ix];
+
+       *rqn = c->rq.rqn;
+}
+
+bool mlx5e_channels_get_xsk_rqn(struct mlx5e_channels *chs, unsigned int ix, u32 *rqn)
+{
+       struct mlx5e_channel *c;
+
+       WARN_ON(ix >= mlx5e_channels_get_num(chs));
+       c = chs->c[ix];
+
+       if (!test_bit(MLX5E_CHANNEL_STATE_XSK, c->state))
+               return false;
+
+       *rqn = c->xskrq.rqn;
+       return true;
+}
+
+bool mlx5e_channels_get_ptp_rqn(struct mlx5e_channels *chs, u32 *rqn)
+{
+       struct mlx5e_ptp *c = chs->ptp;
+
+       if (!c || !test_bit(MLX5E_PTP_STATE_RX, c->state))
+               return false;
+
+       *rqn = c->rq.rqn;
+       return true;
+}

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/channels.h b/drivers/net/ethernet/mellanox/mlx5/core/en/channels.h
new file mode 100644 (file)
index 0000000..ca00cbc
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/channels.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
+/* Copyright (c) 2021, Mellanox Technologies inc. All rights reserved. */
+
+#ifndef __MLX5_EN_CHANNELS_H__
+#define __MLX5_EN_CHANNELS_H__
+
+#include <linux/kernel.h>
+
+struct mlx5e_channels;
+
+unsigned int mlx5e_channels_get_num(struct mlx5e_channels *chs);
+void mlx5e_channels_get_regular_rqn(struct mlx5e_channels *chs, unsigned int ix, u32 *rqn);
+bool mlx5e_channels_get_xsk_rqn(struct mlx5e_channels *chs, unsigned int ix, u32 *rqn);
+bool mlx5e_channels_get_ptp_rqn(struct mlx5e_channels *chs, u32 *rqn);
+
+#endif /* __MLX5_EN_CHANNELS_H__ */