1 /* 2 * drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_flex_actions.c 3 * Copyright (c) 2017 Mellanox Technologies. All rights reserved. 4 * Copyright (c) 2017 Jiri Pirko <jiri@mellanox.com> 5 * Copyright (c) 2017 Yotam Gigi <yotamg@mellanox.com> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the names of the copyright holders nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * Alternatively, this software may be distributed under the terms of the 20 * GNU General Public License ("GPL") version 2 as published by the Free 21 * Software Foundation. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 24 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 27 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include "spectrum_acl_flex_actions.h" 37 #include "core_acl_flex_actions.h" 38 39 #define MLXSW_SP_KVDL_ACT_EXT_SIZE 1 40 41 static int mlxsw_sp_act_kvdl_set_add(void *priv, u32 *p_kvdl_index, 42 char *enc_actions, bool is_first) 43 { 44 struct mlxsw_sp *mlxsw_sp = priv; 45 char pefa_pl[MLXSW_REG_PEFA_LEN]; 46 u32 kvdl_index; 47 int err; 48 49 /* The first action set of a TCAM entry is stored directly in TCAM, 50 * not KVD linear area. 51 */ 52 if (is_first) 53 return 0; 54 55 err = mlxsw_sp_kvdl_alloc(mlxsw_sp, MLXSW_SP_KVDL_ACT_EXT_SIZE, 56 &kvdl_index); 57 if (err) 58 return err; 59 mlxsw_reg_pefa_pack(pefa_pl, kvdl_index, enc_actions); 60 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pefa), pefa_pl); 61 if (err) 62 goto err_pefa_write; 63 *p_kvdl_index = kvdl_index; 64 return 0; 65 66 err_pefa_write: 67 mlxsw_sp_kvdl_free(mlxsw_sp, kvdl_index); 68 return err; 69 } 70 71 static void mlxsw_sp_act_kvdl_set_del(void *priv, u32 kvdl_index, 72 bool is_first) 73 { 74 struct mlxsw_sp *mlxsw_sp = priv; 75 76 if (is_first) 77 return; 78 mlxsw_sp_kvdl_free(mlxsw_sp, kvdl_index); 79 } 80 81 static int mlxsw_sp_act_kvdl_fwd_entry_add(void *priv, u32 *p_kvdl_index, 82 u8 local_port) 83 { 84 struct mlxsw_sp *mlxsw_sp = priv; 85 char ppbs_pl[MLXSW_REG_PPBS_LEN]; 86 u32 kvdl_index; 87 int err; 88 89 err = mlxsw_sp_kvdl_alloc(mlxsw_sp, 1, &kvdl_index); 90 if (err) 91 return err; 92 mlxsw_reg_ppbs_pack(ppbs_pl, kvdl_index, local_port); 93 err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppbs), ppbs_pl); 94 if (err) 95 goto err_ppbs_write; 96 *p_kvdl_index = kvdl_index; 97 return 0; 98 99 err_ppbs_write: 100 mlxsw_sp_kvdl_free(mlxsw_sp, kvdl_index); 101 return err; 102 } 103 104 static void mlxsw_sp_act_kvdl_fwd_entry_del(void *priv, u32 kvdl_index) 105 { 106 struct mlxsw_sp *mlxsw_sp = priv; 107 108 mlxsw_sp_kvdl_free(mlxsw_sp, kvdl_index); 109 } 110 111 static int 112 mlxsw_sp_act_counter_index_get(void *priv, unsigned int *p_counter_index) 113 { 114 struct mlxsw_sp *mlxsw_sp = priv; 115 116 return mlxsw_sp_flow_counter_alloc(mlxsw_sp, p_counter_index); 117 } 118 119 static void 120 mlxsw_sp_act_counter_index_put(void *priv, unsigned int counter_index) 121 { 122 struct mlxsw_sp *mlxsw_sp = priv; 123 124 mlxsw_sp_flow_counter_free(mlxsw_sp, counter_index); 125 } 126 127 static int 128 mlxsw_sp_act_mirror_add(void *priv, u8 local_in_port, u8 local_out_port, 129 bool ingress, int *p_span_id) 130 { 131 struct mlxsw_sp_port *in_port, *out_port; 132 struct mlxsw_sp_span_entry *span_entry; 133 struct mlxsw_sp *mlxsw_sp = priv; 134 enum mlxsw_sp_span_type type; 135 int err; 136 137 type = ingress ? MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS; 138 out_port = mlxsw_sp->ports[local_out_port]; 139 in_port = mlxsw_sp->ports[local_in_port]; 140 141 err = mlxsw_sp_span_mirror_add(in_port, out_port, type, false); 142 if (err) 143 return err; 144 145 span_entry = mlxsw_sp_span_entry_find(mlxsw_sp, local_out_port); 146 if (!span_entry) { 147 err = -ENOENT; 148 goto err_span_entry_find; 149 } 150 151 *p_span_id = span_entry->id; 152 return 0; 153 154 err_span_entry_find: 155 mlxsw_sp_span_mirror_del(in_port, local_out_port, type, false); 156 return err; 157 } 158 159 static void 160 mlxsw_sp_act_mirror_del(void *priv, u8 local_in_port, u8 local_out_port, 161 bool ingress) 162 { 163 struct mlxsw_sp *mlxsw_sp = priv; 164 struct mlxsw_sp_port *in_port; 165 enum mlxsw_sp_span_type type; 166 167 type = ingress ? MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS; 168 in_port = mlxsw_sp->ports[local_in_port]; 169 170 mlxsw_sp_span_mirror_del(in_port, local_out_port, type, false); 171 } 172 173 static const struct mlxsw_afa_ops mlxsw_sp_act_afa_ops = { 174 .kvdl_set_add = mlxsw_sp_act_kvdl_set_add, 175 .kvdl_set_del = mlxsw_sp_act_kvdl_set_del, 176 .kvdl_fwd_entry_add = mlxsw_sp_act_kvdl_fwd_entry_add, 177 .kvdl_fwd_entry_del = mlxsw_sp_act_kvdl_fwd_entry_del, 178 .counter_index_get = mlxsw_sp_act_counter_index_get, 179 .counter_index_put = mlxsw_sp_act_counter_index_put, 180 .mirror_add = mlxsw_sp_act_mirror_add, 181 .mirror_del = mlxsw_sp_act_mirror_del, 182 }; 183 184 int mlxsw_sp_afa_init(struct mlxsw_sp *mlxsw_sp) 185 { 186 mlxsw_sp->afa = mlxsw_afa_create(MLXSW_CORE_RES_GET(mlxsw_sp->core, 187 ACL_ACTIONS_PER_SET), 188 &mlxsw_sp_act_afa_ops, mlxsw_sp); 189 return PTR_ERR_OR_ZERO(mlxsw_sp->afa); 190 } 191 192 void mlxsw_sp_afa_fini(struct mlxsw_sp *mlxsw_sp) 193 { 194 mlxsw_afa_destroy(mlxsw_sp->afa); 195 } 196