forked from Minki/linux
74194fb9c8
Set the mcast loopback prevention bit in the QPC for ETH MLX QPs (not RSS QPs), when the firmware supports this feature. In addition, all rx ring QPs need to be updated in order not to enforce loopback checks. This prevents getting packets we sent both from the network stack and the HCA. Loopback prevention is done by comparing the counter indices of the sent and receiving QPs. If they're equal, packets aren't loopback-ed. Signed-off-by: Maor Gottlieb <maorg@mellanox.com> Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
145 lines
4.5 KiB
C
145 lines
4.5 KiB
C
/*
|
|
* Copyright (c) 2007 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.
|
|
*
|
|
*/
|
|
|
|
#include <linux/slab.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <linux/mlx4/qp.h>
|
|
|
|
#include "mlx4_en.h"
|
|
|
|
void mlx4_en_fill_qp_context(struct mlx4_en_priv *priv, int size, int stride,
|
|
int is_tx, int rss, int qpn, int cqn,
|
|
int user_prio, struct mlx4_qp_context *context)
|
|
{
|
|
struct mlx4_en_dev *mdev = priv->mdev;
|
|
struct net_device *dev = priv->dev;
|
|
|
|
memset(context, 0, sizeof *context);
|
|
context->flags = cpu_to_be32(7 << 16 | rss << MLX4_RSS_QPC_FLAG_OFFSET);
|
|
context->pd = cpu_to_be32(mdev->priv_pdn);
|
|
context->mtu_msgmax = 0xff;
|
|
if (!is_tx && !rss)
|
|
context->rq_size_stride = ilog2(size) << 3 | (ilog2(stride) - 4);
|
|
if (is_tx) {
|
|
context->sq_size_stride = ilog2(size) << 3 | (ilog2(stride) - 4);
|
|
if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PORT_REMAP)
|
|
context->params2 |= MLX4_QP_BIT_FPP;
|
|
|
|
} else {
|
|
context->sq_size_stride = ilog2(TXBB_SIZE) - 4;
|
|
}
|
|
context->usr_page = cpu_to_be32(mdev->priv_uar.index);
|
|
context->local_qpn = cpu_to_be32(qpn);
|
|
context->pri_path.ackto = 1 & 0x07;
|
|
context->pri_path.sched_queue = 0x83 | (priv->port - 1) << 6;
|
|
if (user_prio >= 0) {
|
|
context->pri_path.sched_queue |= user_prio << 3;
|
|
context->pri_path.feup = MLX4_FEUP_FORCE_ETH_UP;
|
|
}
|
|
context->pri_path.counter_index = priv->counter_index;
|
|
context->cqn_send = cpu_to_be32(cqn);
|
|
context->cqn_recv = cpu_to_be32(cqn);
|
|
if (!rss &&
|
|
(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_LB_SRC_CHK) &&
|
|
context->pri_path.counter_index !=
|
|
MLX4_SINK_COUNTER_INDEX(mdev->dev)) {
|
|
/* disable multicast loopback to qp with same counter */
|
|
if (!(dev->features & NETIF_F_LOOPBACK))
|
|
context->pri_path.fl |= MLX4_FL_ETH_SRC_CHECK_MC_LB;
|
|
context->pri_path.control |= MLX4_CTRL_ETH_SRC_CHECK_IF_COUNTER;
|
|
}
|
|
context->db_rec_addr = cpu_to_be64(priv->res.db.dma << 2);
|
|
if (!(dev->features & NETIF_F_HW_VLAN_CTAG_RX))
|
|
context->param3 |= cpu_to_be32(1 << 30);
|
|
|
|
if (!is_tx && !rss &&
|
|
(mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)) {
|
|
en_dbg(HW, priv, "Setting RX qp %x tunnel mode to RX tunneled & non-tunneled\n", qpn);
|
|
context->srqn = cpu_to_be32(7 << 28); /* this fills bits 30:28 */
|
|
}
|
|
}
|
|
|
|
int mlx4_en_change_mcast_lb(struct mlx4_en_priv *priv, struct mlx4_qp *qp,
|
|
int loopback)
|
|
{
|
|
int ret;
|
|
struct mlx4_update_qp_params qp_params;
|
|
|
|
memset(&qp_params, 0, sizeof(qp_params));
|
|
if (!loopback)
|
|
qp_params.flags = MLX4_UPDATE_QP_PARAMS_FLAGS_ETH_CHECK_MC_LB;
|
|
|
|
ret = mlx4_update_qp(priv->mdev->dev, qp->qpn,
|
|
MLX4_UPDATE_QP_ETH_SRC_CHECK_MC_LB,
|
|
&qp_params);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int mlx4_en_map_buffer(struct mlx4_buf *buf)
|
|
{
|
|
struct page **pages;
|
|
int i;
|
|
|
|
if (BITS_PER_LONG == 64 || buf->nbufs == 1)
|
|
return 0;
|
|
|
|
pages = kmalloc(sizeof *pages * buf->nbufs, GFP_KERNEL);
|
|
if (!pages)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < buf->nbufs; ++i)
|
|
pages[i] = virt_to_page(buf->page_list[i].buf);
|
|
|
|
buf->direct.buf = vmap(pages, buf->nbufs, VM_MAP, PAGE_KERNEL);
|
|
kfree(pages);
|
|
if (!buf->direct.buf)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void mlx4_en_unmap_buffer(struct mlx4_buf *buf)
|
|
{
|
|
if (BITS_PER_LONG == 64 || buf->nbufs == 1)
|
|
return;
|
|
|
|
vunmap(buf->direct.buf);
|
|
}
|
|
|
|
void mlx4_en_sqp_event(struct mlx4_qp *qp, enum mlx4_event event)
|
|
{
|
|
return;
|
|
}
|
|
|