Date: Mon, 7 Oct 2019 10:29:31 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r353263 - stable/12/sys/dev/mlx5/mlx5_en Message-ID: <201910071029.x97ATVUQ025364@repo.freebsd.org>
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Author: hselasky Date: Mon Oct 7 10:29:30 2019 New Revision: 353263 URL: https://svnweb.freebsd.org/changeset/base/353263 Log: MFC r352996: Add print to show user a reason for rejecting buffer size change in mlx5en(4). Submitted by: kib@ Sponsored by: Mellanox Technologies Modified: stable/12/sys/dev/mlx5/mlx5_en/mlx5_en_port_buffer.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/dev/mlx5/mlx5_en/mlx5_en_port_buffer.c ============================================================================== --- stable/12/sys/dev/mlx5/mlx5_en/mlx5_en_port_buffer.c Mon Oct 7 10:28:51 2019 (r353262) +++ stable/12/sys/dev/mlx5/mlx5_en/mlx5_en_port_buffer.c Mon Oct 7 10:29:30 2019 (r353263) @@ -139,8 +139,8 @@ static u32 calculate_xoff(struct mlx5e_priv *priv, uns return xoff; } -static int update_xoff_threshold(struct mlx5e_port_buffer *port_buffer, - u32 xoff) +static int update_xoff_threshold(struct mlx5e_priv *priv, + struct mlx5e_port_buffer *port_buffer, u32 xoff) { int i; @@ -152,8 +152,14 @@ static int update_xoff_threshold(struct mlx5e_port_buf } if (port_buffer->buffer[i].size < - (xoff + MLX5E_MAX_PORT_MTU + (1 << MLX5E_BUFFER_CELL_SHIFT))) + (xoff + MLX5E_MAX_PORT_MTU + (1 << MLX5E_BUFFER_CELL_SHIFT))) { + mlx5_en_info(priv->ifp, + "non-lossy buffer %d size %d less than xoff threshold %d\n", + i, port_buffer->buffer[i].size, + xoff + MLX5E_MAX_PORT_MTU + + (1 << MLX5E_BUFFER_CELL_SHIFT)); return -ENOMEM; + } port_buffer->buffer[i].xoff = port_buffer->buffer[i].size - xoff; port_buffer->buffer[i].xon = @@ -182,7 +188,7 @@ static int update_xoff_threshold(struct mlx5e_port_buf * Return 0 if no error. * Set change to true if buffer configuration is modified. */ -static int update_buffer_lossy(unsigned int mtu, +static int update_buffer_lossy(struct mlx5e_priv *priv, unsigned int mtu, u8 pfc_en, u8 *buffer, u32 xoff, struct mlx5e_port_buffer *port_buffer, bool *change) @@ -219,7 +225,7 @@ static int update_buffer_lossy(unsigned int mtu, } if (changed) { - err = update_xoff_threshold(port_buffer, xoff); + err = update_xoff_threshold(priv, port_buffer, xoff); if (err) return err; @@ -253,7 +259,7 @@ int mlx5e_port_manual_buffer_config(struct mlx5e_priv if (change & MLX5E_PORT_BUFFER_CABLE_LEN) { update_buffer = true; - err = update_xoff_threshold(&port_buffer, xoff); + err = update_xoff_threshold(priv, &port_buffer, xoff); if (err) return err; } @@ -264,7 +270,7 @@ int mlx5e_port_manual_buffer_config(struct mlx5e_priv return err; priv->sw_is_port_buf_owner = true; - err = update_buffer_lossy(mtu, pfc->pfc_en, buffer, xoff, + err = update_buffer_lossy(priv, mtu, pfc->pfc_en, buffer, xoff, &port_buffer, &update_buffer); if (err) return err; @@ -276,7 +282,7 @@ int mlx5e_port_manual_buffer_config(struct mlx5e_priv if (err) return err; - err = update_buffer_lossy(mtu, curr_pfc_en, prio2buffer, xoff, + err = update_buffer_lossy(priv, mtu, curr_pfc_en, prio2buffer, xoff, &port_buffer, &update_buffer); if (err) return err; @@ -301,7 +307,7 @@ int mlx5e_port_manual_buffer_config(struct mlx5e_priv return -EINVAL; update_buffer = true; - err = update_xoff_threshold(&port_buffer, xoff); + err = update_xoff_threshold(priv, &port_buffer, xoff); if (err) return err; } @@ -309,7 +315,7 @@ int mlx5e_port_manual_buffer_config(struct mlx5e_priv /* Need to update buffer configuration if xoff value is changed */ if (!update_buffer && xoff != priv->dcbx.xoff) { update_buffer = true; - err = update_xoff_threshold(&port_buffer, xoff); + err = update_xoff_threshold(priv, &port_buffer, xoff); if (err) return err; }
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