forked from Minki/linux
0e98b523c4
Instead of relying on HW to change schedule queue by UP, schedule queue is fixed for a tx_ring, and UP in WQE is ignored in this aspect. This resolves two issues with untagged traffic: 1. untagged traffic has no UP in packet which is needed for QoS. The change above allows setting the schedule queue (and by that the UP) of such a stream. 2. BlueFlame uses the same field used by vlan tag. So forcing UP from QPC allows using BF for untagged but prioritized traffic. In old firmware that force UP is not supported, untagged traffic will not subject to QoS. Because UP is set by QP, need to always have a tx ring per UP, even if pfcrx module paramter is false. Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
/*
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* Copyright (c) 2007 Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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#include <linux/slab.h>
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#include <linux/vmalloc.h>
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#include <linux/mlx4/qp.h>
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#include "mlx4_en.h"
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void mlx4_en_fill_qp_context(struct mlx4_en_priv *priv, int size, int stride,
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int is_tx, int rss, int qpn, int cqn,
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int user_prio, struct mlx4_qp_context *context)
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{
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struct mlx4_en_dev *mdev = priv->mdev;
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memset(context, 0, sizeof *context);
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context->flags = cpu_to_be32(7 << 16 | rss << MLX4_RSS_QPC_FLAG_OFFSET);
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context->pd = cpu_to_be32(mdev->priv_pdn);
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context->mtu_msgmax = 0xff;
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if (!is_tx && !rss)
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context->rq_size_stride = ilog2(size) << 3 | (ilog2(stride) - 4);
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if (is_tx)
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context->sq_size_stride = ilog2(size) << 3 | (ilog2(stride) - 4);
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else
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context->sq_size_stride = ilog2(TXBB_SIZE) - 4;
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context->usr_page = cpu_to_be32(mdev->priv_uar.index);
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context->local_qpn = cpu_to_be32(qpn);
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context->pri_path.ackto = 1 & 0x07;
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context->pri_path.sched_queue = 0x83 | (priv->port - 1) << 6;
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if (user_prio >= 0) {
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context->pri_path.sched_queue |= user_prio << 3;
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context->pri_path.feup = 1 << 6;
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}
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context->pri_path.counter_index = 0xff;
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context->cqn_send = cpu_to_be32(cqn);
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context->cqn_recv = cpu_to_be32(cqn);
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context->db_rec_addr = cpu_to_be64(priv->res.db.dma << 2);
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}
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int mlx4_en_map_buffer(struct mlx4_buf *buf)
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{
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struct page **pages;
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int i;
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if (BITS_PER_LONG == 64 || buf->nbufs == 1)
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return 0;
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pages = kmalloc(sizeof *pages * buf->nbufs, GFP_KERNEL);
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if (!pages)
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return -ENOMEM;
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for (i = 0; i < buf->nbufs; ++i)
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pages[i] = virt_to_page(buf->page_list[i].buf);
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buf->direct.buf = vmap(pages, buf->nbufs, VM_MAP, PAGE_KERNEL);
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kfree(pages);
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if (!buf->direct.buf)
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return -ENOMEM;
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return 0;
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}
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void mlx4_en_unmap_buffer(struct mlx4_buf *buf)
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{
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if (BITS_PER_LONG == 64 || buf->nbufs == 1)
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return;
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vunmap(buf->direct.buf);
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}
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void mlx4_en_sqp_event(struct mlx4_qp *qp, enum mlx4_event event)
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{
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return;
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}
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