101 lines
3.4 KiB
C
101 lines
3.4 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2007 Cisco Systems, Inc. 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 "mlx4_ib.h"
|
||
|
|
|
||
|
|
struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
|
||
|
|
{
|
||
|
|
struct mlx4_dev *dev = to_mdev(pd->device)->dev;
|
||
|
|
struct mlx4_ib_ah *ah;
|
||
|
|
|
||
|
|
ah = kmalloc(sizeof *ah, GFP_ATOMIC);
|
||
|
|
if (!ah)
|
||
|
|
return ERR_PTR(-ENOMEM);
|
||
|
|
|
||
|
|
memset(&ah->av, 0, sizeof ah->av);
|
||
|
|
|
||
|
|
ah->av.port_pd = cpu_to_be32(to_mpd(pd)->pdn | (ah_attr->port_num << 24));
|
||
|
|
ah->av.g_slid = ah_attr->src_path_bits;
|
||
|
|
ah->av.dlid = cpu_to_be16(ah_attr->dlid);
|
||
|
|
if (ah_attr->static_rate) {
|
||
|
|
ah->av.stat_rate = ah_attr->static_rate + MLX4_STAT_RATE_OFFSET;
|
||
|
|
while (ah->av.stat_rate > IB_RATE_2_5_GBPS + MLX4_STAT_RATE_OFFSET &&
|
||
|
|
!(1 << ah->av.stat_rate & dev->caps.stat_rate_support))
|
||
|
|
--ah->av.stat_rate;
|
||
|
|
}
|
||
|
|
ah->av.sl_tclass_flowlabel = cpu_to_be32(ah_attr->sl << 28);
|
||
|
|
if (ah_attr->ah_flags & IB_AH_GRH) {
|
||
|
|
ah->av.g_slid |= 0x80;
|
||
|
|
ah->av.gid_index = ah_attr->grh.sgid_index;
|
||
|
|
ah->av.hop_limit = ah_attr->grh.hop_limit;
|
||
|
|
ah->av.sl_tclass_flowlabel |=
|
||
|
|
cpu_to_be32((ah_attr->grh.traffic_class << 20) |
|
||
|
|
ah_attr->grh.flow_label);
|
||
|
|
memcpy(ah->av.dgid, ah_attr->grh.dgid.raw, 16);
|
||
|
|
}
|
||
|
|
|
||
|
|
return &ah->ibah;
|
||
|
|
}
|
||
|
|
|
||
|
|
int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr)
|
||
|
|
{
|
||
|
|
struct mlx4_ib_ah *ah = to_mah(ibah);
|
||
|
|
|
||
|
|
memset(ah_attr, 0, sizeof *ah_attr);
|
||
|
|
ah_attr->dlid = be16_to_cpu(ah->av.dlid);
|
||
|
|
ah_attr->sl = be32_to_cpu(ah->av.sl_tclass_flowlabel) >> 28;
|
||
|
|
ah_attr->port_num = be32_to_cpu(ah->av.port_pd) >> 24;
|
||
|
|
if (ah->av.stat_rate)
|
||
|
|
ah_attr->static_rate = ah->av.stat_rate - MLX4_STAT_RATE_OFFSET;
|
||
|
|
ah_attr->src_path_bits = ah->av.g_slid & 0x7F;
|
||
|
|
|
||
|
|
if (mlx4_ib_ah_grh_present(ah)) {
|
||
|
|
ah_attr->ah_flags = IB_AH_GRH;
|
||
|
|
|
||
|
|
ah_attr->grh.traffic_class =
|
||
|
|
be32_to_cpu(ah->av.sl_tclass_flowlabel) >> 20;
|
||
|
|
ah_attr->grh.flow_label =
|
||
|
|
be32_to_cpu(ah->av.sl_tclass_flowlabel) & 0xfffff;
|
||
|
|
ah_attr->grh.hop_limit = ah->av.hop_limit;
|
||
|
|
ah_attr->grh.sgid_index = ah->av.gid_index;
|
||
|
|
memcpy(ah_attr->grh.dgid.raw, ah->av.dgid, 16);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int mlx4_ib_destroy_ah(struct ib_ah *ah)
|
||
|
|
{
|
||
|
|
kfree(to_mah(ah));
|
||
|
|
return 0;
|
||
|
|
}
|