Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. |
Jack Morgenstein | 51a379d | 2008-07-25 10:32:52 -0700 | [diff] [blame] | 3 | * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 4 | * |
| 5 | * This software is available to you under a choice of one of two |
| 6 | * licenses. You may choose to be licensed under the terms of the GNU |
| 7 | * General Public License (GPL) Version 2, available from the file |
| 8 | * COPYING in the main directory of this source tree, or the |
| 9 | * OpenIB.org BSD license below: |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or |
| 12 | * without modification, are permitted provided that the following |
| 13 | * conditions are met: |
| 14 | * |
| 15 | * - Redistributions of source code must retain the above |
| 16 | * copyright notice, this list of conditions and the following |
| 17 | * disclaimer. |
| 18 | * |
| 19 | * - Redistributions in binary form must reproduce the above |
| 20 | * copyright notice, this list of conditions and the following |
| 21 | * disclaimer in the documentation and/or other materials |
| 22 | * provided with the distribution. |
| 23 | * |
| 24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 25 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 26 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 27 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 28 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 29 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 30 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 31 | * SOFTWARE. |
| 32 | */ |
| 33 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 34 | #include <linux/string.h> |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 35 | #include <linux/etherdevice.h> |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 36 | |
| 37 | #include <linux/mlx4/cmd.h> |
| 38 | |
| 39 | #include "mlx4.h" |
| 40 | |
Ron Livne | 521e575 | 2008-07-14 23:48:48 -0700 | [diff] [blame] | 41 | #define MGM_QPN_MASK 0x00FFFFFF |
| 42 | #define MGM_BLCK_LB_BIT 30 |
| 43 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 44 | struct mlx4_mgm { |
| 45 | __be32 next_gid_index; |
| 46 | __be32 members_count; |
| 47 | u32 reserved[2]; |
| 48 | u8 gid[16]; |
| 49 | __be32 qp[MLX4_QP_PER_MGM]; |
| 50 | }; |
| 51 | |
| 52 | static const u8 zero_gid[16]; /* automatically initialized to 0 */ |
| 53 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 54 | static int mlx4_READ_ENTRY(struct mlx4_dev *dev, int index, |
| 55 | struct mlx4_cmd_mailbox *mailbox) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 56 | { |
| 57 | return mlx4_cmd_box(dev, 0, mailbox->dma, index, 0, MLX4_CMD_READ_MCG, |
| 58 | MLX4_CMD_TIME_CLASS_A); |
| 59 | } |
| 60 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 61 | static int mlx4_WRITE_ENTRY(struct mlx4_dev *dev, int index, |
| 62 | struct mlx4_cmd_mailbox *mailbox) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 63 | { |
| 64 | return mlx4_cmd(dev, mailbox->dma, index, 0, MLX4_CMD_WRITE_MCG, |
| 65 | MLX4_CMD_TIME_CLASS_A); |
| 66 | } |
| 67 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 68 | static int mlx4_GID_HASH(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, |
| 69 | u16 *hash, u8 op_mod) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 70 | { |
| 71 | u64 imm; |
| 72 | int err; |
| 73 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 74 | err = mlx4_cmd_imm(dev, mailbox->dma, &imm, 0, op_mod, |
| 75 | MLX4_CMD_MGID_HASH, MLX4_CMD_TIME_CLASS_A); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 76 | |
| 77 | if (!err) |
| 78 | *hash = imm; |
| 79 | |
| 80 | return err; |
| 81 | } |
| 82 | |
| 83 | /* |
| 84 | * Caller must hold MCG table semaphore. gid and mgm parameters must |
| 85 | * be properly aligned for command interface. |
| 86 | * |
| 87 | * Returns 0 unless a firmware command error occurs. |
| 88 | * |
| 89 | * If GID is found in MGM or MGM is empty, *index = *hash, *prev = -1 |
| 90 | * and *mgm holds MGM entry. |
| 91 | * |
| 92 | * if GID is found in AMGM, *index = index in AMGM, *prev = index of |
| 93 | * previous entry in hash chain and *mgm holds AMGM entry. |
| 94 | * |
| 95 | * If no AMGM exists for given gid, *index = -1, *prev = index of last |
| 96 | * entry in hash chain and *mgm holds end of hash chain. |
| 97 | */ |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 98 | static int find_entry(struct mlx4_dev *dev, u8 port, |
| 99 | u8 *gid, enum mlx4_protocol prot, |
| 100 | enum mlx4_steer_type steer, |
| 101 | struct mlx4_cmd_mailbox *mgm_mailbox, |
| 102 | u16 *hash, int *prev, int *index) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 103 | { |
| 104 | struct mlx4_cmd_mailbox *mailbox; |
| 105 | struct mlx4_mgm *mgm = mgm_mailbox->buf; |
| 106 | u8 *mgid; |
| 107 | int err; |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 108 | u8 op_mod = (prot == MLX4_PROT_ETH) ? !!(dev->caps.vep_mc_steering) : 0; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 109 | |
| 110 | mailbox = mlx4_alloc_cmd_mailbox(dev); |
| 111 | if (IS_ERR(mailbox)) |
| 112 | return -ENOMEM; |
| 113 | mgid = mailbox->buf; |
| 114 | |
| 115 | memcpy(mgid, gid, 16); |
| 116 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 117 | err = mlx4_GID_HASH(dev, mailbox, hash, op_mod); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 118 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 119 | if (err) |
| 120 | return err; |
| 121 | |
| 122 | if (0) |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame] | 123 | mlx4_dbg(dev, "Hash for %pI6 is %04x\n", gid, *hash); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 124 | |
| 125 | *index = *hash; |
| 126 | *prev = -1; |
| 127 | |
| 128 | do { |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 129 | err = mlx4_READ_ENTRY(dev, *index, mgm_mailbox); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 130 | if (err) |
| 131 | return err; |
| 132 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 133 | if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 134 | if (*index != *hash) { |
| 135 | mlx4_err(dev, "Found zero MGID in AMGM.\n"); |
| 136 | err = -EINVAL; |
| 137 | } |
| 138 | return err; |
| 139 | } |
| 140 | |
Aleksey Senin | da995a8 | 2010-12-02 11:44:49 +0000 | [diff] [blame] | 141 | if (!memcmp(mgm->gid, gid, 16) && |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 142 | be32_to_cpu(mgm->members_count) >> 30 == prot) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 143 | return err; |
| 144 | |
| 145 | *prev = *index; |
| 146 | *index = be32_to_cpu(mgm->next_gid_index) >> 6; |
| 147 | } while (*index); |
| 148 | |
| 149 | *index = -1; |
| 150 | return err; |
| 151 | } |
| 152 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 153 | int mlx4_qp_attach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16], |
| 154 | int block_mcast_loopback, enum mlx4_protocol prot, |
| 155 | enum mlx4_steer_type steer) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 156 | { |
| 157 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 158 | struct mlx4_cmd_mailbox *mailbox; |
| 159 | struct mlx4_mgm *mgm; |
| 160 | u32 members_count; |
| 161 | u16 hash; |
| 162 | int index, prev; |
| 163 | int link = 0; |
| 164 | int i; |
| 165 | int err; |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 166 | u8 port = gid[5]; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 167 | |
| 168 | mailbox = mlx4_alloc_cmd_mailbox(dev); |
| 169 | if (IS_ERR(mailbox)) |
| 170 | return PTR_ERR(mailbox); |
| 171 | mgm = mailbox->buf; |
| 172 | |
| 173 | mutex_lock(&priv->mcg_table.mutex); |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 174 | err = find_entry(dev, port, gid, prot, steer, |
| 175 | mailbox, &hash, &prev, &index); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 176 | if (err) |
| 177 | goto out; |
| 178 | |
| 179 | if (index != -1) { |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 180 | if (!(be32_to_cpu(mgm->members_count) & 0xffffff)) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 181 | memcpy(mgm->gid, gid, 16); |
| 182 | } else { |
| 183 | link = 1; |
| 184 | |
| 185 | index = mlx4_bitmap_alloc(&priv->mcg_table.bitmap); |
| 186 | if (index == -1) { |
| 187 | mlx4_err(dev, "No AMGM entries left\n"); |
| 188 | err = -ENOMEM; |
| 189 | goto out; |
| 190 | } |
| 191 | index += dev->caps.num_mgms; |
| 192 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 193 | memset(mgm, 0, sizeof *mgm); |
| 194 | memcpy(mgm->gid, gid, 16); |
| 195 | } |
| 196 | |
Aleksey Senin | da995a8 | 2010-12-02 11:44:49 +0000 | [diff] [blame] | 197 | members_count = be32_to_cpu(mgm->members_count) & 0xffffff; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 198 | if (members_count == MLX4_QP_PER_MGM) { |
| 199 | mlx4_err(dev, "MGM at index %x is full.\n", index); |
| 200 | err = -ENOMEM; |
| 201 | goto out; |
| 202 | } |
| 203 | |
| 204 | for (i = 0; i < members_count; ++i) |
Ron Livne | 521e575 | 2008-07-14 23:48:48 -0700 | [diff] [blame] | 205 | if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn) { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 206 | mlx4_dbg(dev, "QP %06x already a member of MGM\n", qp->qpn); |
| 207 | err = 0; |
| 208 | goto out; |
| 209 | } |
| 210 | |
Ron Livne | 521e575 | 2008-07-14 23:48:48 -0700 | [diff] [blame] | 211 | if (block_mcast_loopback) |
| 212 | mgm->qp[members_count++] = cpu_to_be32((qp->qpn & MGM_QPN_MASK) | |
Ingo Molnar | e6a1762 | 2008-11-25 16:57:59 -0800 | [diff] [blame] | 213 | (1U << MGM_BLCK_LB_BIT)); |
Ron Livne | 521e575 | 2008-07-14 23:48:48 -0700 | [diff] [blame] | 214 | else |
| 215 | mgm->qp[members_count++] = cpu_to_be32(qp->qpn & MGM_QPN_MASK); |
| 216 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 217 | mgm->members_count = cpu_to_be32(members_count | (u32) prot << 30); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 218 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 219 | err = mlx4_WRITE_ENTRY(dev, index, mailbox); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 220 | if (err) |
| 221 | goto out; |
| 222 | |
| 223 | if (!link) |
| 224 | goto out; |
| 225 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 226 | err = mlx4_READ_ENTRY(dev, prev, mailbox); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 227 | if (err) |
| 228 | goto out; |
| 229 | |
| 230 | mgm->next_gid_index = cpu_to_be32(index << 6); |
| 231 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 232 | err = mlx4_WRITE_ENTRY(dev, prev, mailbox); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 233 | if (err) |
| 234 | goto out; |
| 235 | |
| 236 | out: |
| 237 | if (err && link && index != -1) { |
| 238 | if (index < dev->caps.num_mgms) |
| 239 | mlx4_warn(dev, "Got AMGM index %d < %d", |
| 240 | index, dev->caps.num_mgms); |
| 241 | else |
| 242 | mlx4_bitmap_free(&priv->mcg_table.bitmap, |
| 243 | index - dev->caps.num_mgms); |
| 244 | } |
| 245 | mutex_unlock(&priv->mcg_table.mutex); |
| 246 | |
| 247 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 248 | return err; |
| 249 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 250 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 251 | int mlx4_qp_detach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16], |
| 252 | enum mlx4_protocol prot, enum mlx4_steer_type steer) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 253 | { |
| 254 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 255 | struct mlx4_cmd_mailbox *mailbox; |
| 256 | struct mlx4_mgm *mgm; |
| 257 | u32 members_count; |
| 258 | u16 hash; |
| 259 | int prev, index; |
| 260 | int i, loc; |
| 261 | int err; |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 262 | u8 port = gid[5]; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 263 | |
| 264 | mailbox = mlx4_alloc_cmd_mailbox(dev); |
| 265 | if (IS_ERR(mailbox)) |
| 266 | return PTR_ERR(mailbox); |
| 267 | mgm = mailbox->buf; |
| 268 | |
| 269 | mutex_lock(&priv->mcg_table.mutex); |
| 270 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 271 | err = find_entry(dev, port, gid, prot, steer, |
| 272 | mailbox, &hash, &prev, &index); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 273 | if (err) |
| 274 | goto out; |
| 275 | |
| 276 | if (index == -1) { |
Harvey Harrison | 5b095d989 | 2008-10-29 12:52:50 -0700 | [diff] [blame] | 277 | mlx4_err(dev, "MGID %pI6 not found\n", gid); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 278 | err = -EINVAL; |
| 279 | goto out; |
| 280 | } |
| 281 | |
Aleksey Senin | da995a8 | 2010-12-02 11:44:49 +0000 | [diff] [blame] | 282 | members_count = be32_to_cpu(mgm->members_count) & 0xffffff; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 283 | for (loc = -1, i = 0; i < members_count; ++i) |
Ron Livne | 521e575 | 2008-07-14 23:48:48 -0700 | [diff] [blame] | 284 | if ((be32_to_cpu(mgm->qp[i]) & MGM_QPN_MASK) == qp->qpn) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 285 | loc = i; |
| 286 | |
| 287 | if (loc == -1) { |
| 288 | mlx4_err(dev, "QP %06x not found in MGM\n", qp->qpn); |
| 289 | err = -EINVAL; |
| 290 | goto out; |
| 291 | } |
| 292 | |
| 293 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 294 | mgm->members_count = cpu_to_be32(--members_count | (u32) prot << 30); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 295 | mgm->qp[loc] = mgm->qp[i - 1]; |
| 296 | mgm->qp[i - 1] = 0; |
| 297 | |
Eli Cohen | 4dc51b3 | 2008-04-16 21:09:35 -0700 | [diff] [blame] | 298 | if (i != 1) { |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 299 | err = mlx4_WRITE_ENTRY(dev, index, mailbox); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 300 | goto out; |
Eli Cohen | 4dc51b3 | 2008-04-16 21:09:35 -0700 | [diff] [blame] | 301 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 302 | |
| 303 | if (prev == -1) { |
| 304 | /* Remove entry from MGM */ |
| 305 | int amgm_index = be32_to_cpu(mgm->next_gid_index) >> 6; |
| 306 | if (amgm_index) { |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 307 | err = mlx4_READ_ENTRY(dev, amgm_index, mailbox); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 308 | if (err) |
| 309 | goto out; |
| 310 | } else |
| 311 | memset(mgm->gid, 0, 16); |
| 312 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 313 | err = mlx4_WRITE_ENTRY(dev, index, mailbox); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 314 | if (err) |
| 315 | goto out; |
| 316 | |
| 317 | if (amgm_index) { |
| 318 | if (amgm_index < dev->caps.num_mgms) |
| 319 | mlx4_warn(dev, "MGM entry %d had AMGM index %d < %d", |
| 320 | index, amgm_index, dev->caps.num_mgms); |
| 321 | else |
| 322 | mlx4_bitmap_free(&priv->mcg_table.bitmap, |
| 323 | amgm_index - dev->caps.num_mgms); |
| 324 | } |
| 325 | } else { |
| 326 | /* Remove entry from AMGM */ |
| 327 | int cur_next_index = be32_to_cpu(mgm->next_gid_index) >> 6; |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 328 | err = mlx4_READ_ENTRY(dev, prev, mailbox); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 329 | if (err) |
| 330 | goto out; |
| 331 | |
| 332 | mgm->next_gid_index = cpu_to_be32(cur_next_index << 6); |
| 333 | |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 334 | err = mlx4_WRITE_ENTRY(dev, prev, mailbox); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 335 | if (err) |
| 336 | goto out; |
| 337 | |
| 338 | if (index < dev->caps.num_mgms) |
| 339 | mlx4_warn(dev, "entry %d had next AMGM index %d < %d", |
| 340 | prev, index, dev->caps.num_mgms); |
| 341 | else |
| 342 | mlx4_bitmap_free(&priv->mcg_table.bitmap, |
| 343 | index - dev->caps.num_mgms); |
| 344 | } |
| 345 | |
| 346 | out: |
| 347 | mutex_unlock(&priv->mcg_table.mutex); |
| 348 | |
| 349 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 350 | return err; |
| 351 | } |
Yevgeny Petrilin | 0345584 | 2011-03-22 22:38:17 +0000 | [diff] [blame^] | 352 | |
| 353 | |
| 354 | int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16], |
| 355 | int block_mcast_loopback, enum mlx4_protocol prot) |
| 356 | { |
| 357 | enum mlx4_steer_type steer; |
| 358 | |
| 359 | steer = (is_valid_ether_addr(&gid[10])) ? MLX4_UC_STEER : MLX4_MC_STEER; |
| 360 | |
| 361 | if (prot == MLX4_PROT_ETH && !dev->caps.vep_mc_steering) |
| 362 | return 0; |
| 363 | |
| 364 | if (prot == MLX4_PROT_ETH) |
| 365 | gid[7] |= (steer << 1); |
| 366 | |
| 367 | return mlx4_qp_attach_common(dev, qp, gid, |
| 368 | block_mcast_loopback, prot, |
| 369 | steer); |
| 370 | } |
| 371 | EXPORT_SYMBOL_GPL(mlx4_multicast_attach); |
| 372 | |
| 373 | int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16], |
| 374 | enum mlx4_protocol prot) |
| 375 | { |
| 376 | enum mlx4_steer_type steer; |
| 377 | |
| 378 | steer = (is_valid_ether_addr(&gid[10])) ? MLX4_UC_STEER : MLX4_MC_STEER; |
| 379 | |
| 380 | if (prot == MLX4_PROT_ETH && !dev->caps.vep_mc_steering) |
| 381 | return 0; |
| 382 | |
| 383 | if (prot == MLX4_PROT_ETH) { |
| 384 | gid[7] |= (steer << 1); |
| 385 | } |
| 386 | |
| 387 | return mlx4_qp_detach_common(dev, qp, gid, prot, steer); |
| 388 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 389 | EXPORT_SYMBOL_GPL(mlx4_multicast_detach); |
| 390 | |
Roland Dreier | 3d73c28 | 2007-10-10 15:43:54 -0700 | [diff] [blame] | 391 | int mlx4_init_mcg_table(struct mlx4_dev *dev) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 392 | { |
| 393 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 394 | int err; |
| 395 | |
Yevgeny Petrilin | 93fc9e1 | 2008-10-22 10:25:29 -0700 | [diff] [blame] | 396 | err = mlx4_bitmap_init(&priv->mcg_table.bitmap, dev->caps.num_amgms, |
| 397 | dev->caps.num_amgms - 1, 0, 0); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 398 | if (err) |
| 399 | return err; |
| 400 | |
| 401 | mutex_init(&priv->mcg_table.mutex); |
| 402 | |
| 403 | return 0; |
| 404 | } |
| 405 | |
| 406 | void mlx4_cleanup_mcg_table(struct mlx4_dev *dev) |
| 407 | { |
| 408 | mlx4_bitmap_cleanup(&mlx4_priv(dev)->mcg_table.bitmap); |
| 409 | } |