ah.c (01b944fe1cd4e21a2a9ed51adbdbafe2d5e905ba) ah.c (2811ba51b04958cd001b6409c9f70e8563376346)
1/*
2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:

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27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33#include "mlx5_ib.h"
34
1/*
2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:

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27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33#include "mlx5_ib.h"
34
35struct ib_ah *create_ib_ah(struct ib_ah_attr *ah_attr,
36 struct mlx5_ib_ah *ah)
35static struct ib_ah *create_ib_ah(struct mlx5_ib_dev *dev,
36 struct mlx5_ib_ah *ah,
37 struct ib_ah_attr *ah_attr,
38 enum rdma_link_layer ll)
37{
38 if (ah_attr->ah_flags & IB_AH_GRH) {
39 memcpy(ah->av.rgid, &ah_attr->grh.dgid, 16);
40 ah->av.grh_gid_fl = cpu_to_be32(ah_attr->grh.flow_label |
41 (1 << 30) |
42 ah_attr->grh.sgid_index << 20);
43 ah->av.hop_limit = ah_attr->grh.hop_limit;
44 ah->av.tclass = ah_attr->grh.traffic_class;
45 }
46
39{
40 if (ah_attr->ah_flags & IB_AH_GRH) {
41 memcpy(ah->av.rgid, &ah_attr->grh.dgid, 16);
42 ah->av.grh_gid_fl = cpu_to_be32(ah_attr->grh.flow_label |
43 (1 << 30) |
44 ah_attr->grh.sgid_index << 20);
45 ah->av.hop_limit = ah_attr->grh.hop_limit;
46 ah->av.tclass = ah_attr->grh.traffic_class;
47 }
48
47 ah->av.rlid = cpu_to_be16(ah_attr->dlid);
48 ah->av.fl_mlid = ah_attr->src_path_bits & 0x7f;
49 ah->av.stat_rate_sl = (ah_attr->static_rate << 4) | (ah_attr->sl & 0xf);
49 ah->av.stat_rate_sl = (ah_attr->static_rate << 4);
50
50
51 if (ll == IB_LINK_LAYER_ETHERNET) {
52 memcpy(ah->av.rmac, ah_attr->dmac, sizeof(ah_attr->dmac));
53 ah->av.udp_sport =
54 mlx5_get_roce_udp_sport(dev,
55 ah_attr->port_num,
56 ah_attr->grh.sgid_index);
57 ah->av.stat_rate_sl |= (ah_attr->sl & 0x7) << 1;
58 } else {
59 ah->av.rlid = cpu_to_be16(ah_attr->dlid);
60 ah->av.fl_mlid = ah_attr->src_path_bits & 0x7f;
61 ah->av.stat_rate_sl |= (ah_attr->sl & 0xf);
62 }
63
51 return &ah->ibah;
52}
53
54struct ib_ah *mlx5_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
55{
56 struct mlx5_ib_ah *ah;
64 return &ah->ibah;
65}
66
67struct ib_ah *mlx5_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
68{
69 struct mlx5_ib_ah *ah;
70 struct mlx5_ib_dev *dev = to_mdev(pd->device);
71 enum rdma_link_layer ll;
57
72
73 ll = pd->device->get_link_layer(pd->device, ah_attr->port_num);
74
75 if (ll == IB_LINK_LAYER_ETHERNET && !(ah_attr->ah_flags & IB_AH_GRH))
76 return ERR_PTR(-EINVAL);
77
58 ah = kzalloc(sizeof(*ah), GFP_ATOMIC);
59 if (!ah)
60 return ERR_PTR(-ENOMEM);
61
78 ah = kzalloc(sizeof(*ah), GFP_ATOMIC);
79 if (!ah)
80 return ERR_PTR(-ENOMEM);
81
62 return create_ib_ah(ah_attr, ah); /* never fails */
82 return create_ib_ah(dev, ah, ah_attr, ll); /* never fails */
63}
64
65int mlx5_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr)
66{
67 struct mlx5_ib_ah *ah = to_mah(ibah);
68 u32 tmp;
69
70 memset(ah_attr, 0, sizeof(*ah_attr));

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84
85int mlx5_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr)
86{
87 struct mlx5_ib_ah *ah = to_mah(ibah);
88 u32 tmp;
89
90 memset(ah_attr, 0, sizeof(*ah_attr));

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