mlx4/mlx4_ib/mlx4_ib_ah.c

45 static struct ib_ah *create_ib_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr,
50 	ah->av.ib.port_pd = cpu_to_be32(to_mpd(pd)->pdn | (ah_attr->port_num << 24));
51 	ah->av.ib.g_slid  = ah_attr->src_path_bits;
52 	ah->av.ib.sl_tclass_flowlabel = cpu_to_be32(ah_attr->sl << 28);
53 	if (ah_attr->ah_flags & IB_AH_GRH) {
55 		ah->av.ib.gid_index = ah_attr->grh.sgid_index;
56 		ah->av.ib.hop_limit = ah_attr->grh.hop_limit;
58 			cpu_to_be32((ah_attr->grh.traffic_class << 20) |
59 				    ah_attr->grh.flow_label);
60 		memcpy(ah->av.ib.dgid, ah_attr->grh.dgid.raw, 16);
63 	ah->av.ib.dlid    = cpu_to_be16(ah_attr->dlid);
64 	if (ah_attr->static_rate) {
65 		ah->av.ib.stat_rate = ah_attr->static_rate + MLX4_STAT_RATE_OFFSET;
74 static struct ib_ah *create_iboe_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr,
86 	memcpy(&in6, ah_attr->grh.dgid.raw, sizeof(in6));
91 		memcpy(ah->av.eth.mac, ah_attr->dmac, ETH_ALEN);
93 	ret = ib_get_cached_gid(pd->device, ah_attr->port_num,
94 				ah_attr->grh.sgid_index, &sgid, &gid_attr);
104 		vlan_tag |= (ah_attr->sl & 7) << 13;
105 	ah->av.eth.port_pd = cpu_to_be32(to_mpd(pd)->pdn | (ah_attr->port_num << 24));
106 	ret = mlx4_ib_gid_index_to_real_index(ibdev, ah_attr->port_num, ah_attr->grh.sgid_index);
111 	ah->av.eth.hop_limit = ah_attr->grh.hop_limit;
112 	if (ah_attr->static_rate) {
113 		ah->av.eth.stat_rate = ah_attr->static_rate + MLX4_STAT_RATE_OFFSET;
125 	memcpy(ah->av.eth.dgid, ah_attr->grh.dgid.raw, 16);
126 	ah->av.eth.sl_tclass_flowlabel = cpu_to_be32(ah_attr->sl << 29);
131 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr,
142 	if (rdma_port_get_link_layer(pd->device, ah_attr->port_num) == IB_LINK_LAYER_ETHERNET) {
143 		if (!(ah_attr->ah_flags & IB_AH_GRH)) {
154 			ret = create_iboe_ah(pd, ah_attr, ah);
162 		return create_ib_ah(pd, ah_attr, ah); /* never fails */
165 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr)
170 	memset(ah_attr, 0, sizeof *ah_attr);
171 	ah_attr->port_num = be32_to_cpu(ah->av.ib.port_pd) >> 24;
172 	ll = rdma_port_get_link_layer(ibah->device, ah_attr->port_num);
174 		ah_attr->sl = be32_to_cpu(ah->av.eth.sl_tclass_flowlabel) >> 29;
176 		ah_attr->sl = be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 28;
178 	ah_attr->dlid = ll == IB_LINK_LAYER_INFINIBAND ? be16_to_cpu(ah->av.ib.dlid) : 0;
180 		ah_attr->static_rate = ah->av.ib.stat_rate - MLX4_STAT_RATE_OFFSET;
181 	ah_attr->src_path_bits = ah->av.ib.g_slid & 0x7F;
184 		ah_attr->ah_flags = IB_AH_GRH;
186 		ah_attr->grh.traffic_class =
188 		ah_attr->grh.flow_label =
190 		ah_attr->grh.hop_limit  = ah->av.ib.hop_limit;
191 		ah_attr->grh.sgid_index = ah->av.ib.gid_index;
192 		memcpy(ah_attr->grh.dgid.raw, ah->av.ib.dgid, 16);