mlx4_ib_mad.c revision 329159
1219820Sjeff/* 2219820Sjeff * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved. 3219820Sjeff * 4219820Sjeff * This software is available to you under a choice of one of two 5219820Sjeff * licenses. You may choose to be licensed under the terms of the GNU 6219820Sjeff * General Public License (GPL) Version 2, available from the file 7219820Sjeff * COPYING in the main directory of this source tree, or the 8219820Sjeff * OpenIB.org BSD license below: 9219820Sjeff * 10219820Sjeff * Redistribution and use in source and binary forms, with or 11219820Sjeff * without modification, are permitted provided that the following 12219820Sjeff * conditions are met: 13219820Sjeff * 14219820Sjeff * - Redistributions of source code must retain the above 15219820Sjeff * copyright notice, this list of conditions and the following 16219820Sjeff * disclaimer. 17219820Sjeff * 18219820Sjeff * - Redistributions in binary form must reproduce the above 19219820Sjeff * copyright notice, this list of conditions and the following 20219820Sjeff * disclaimer in the documentation and/or other materials 21219820Sjeff * provided with the distribution. 22219820Sjeff * 23219820Sjeff * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24219820Sjeff * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25219820Sjeff * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26219820Sjeff * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27219820Sjeff * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28219820Sjeff * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29219820Sjeff * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30219820Sjeff * SOFTWARE. 31219820Sjeff */ 32219820Sjeff 33219820Sjeff#include <rdma/ib_mad.h> 34219820Sjeff#include <rdma/ib_smi.h> 35255932Salfred#include <rdma/ib_sa.h> 36255932Salfred#include <rdma/ib_cache.h> 37219820Sjeff 38255932Salfred#include <linux/random.h> 39306486Shselasky#include <dev/mlx4/cmd.h> 40255932Salfred#include <linux/gfp.h> 41255932Salfred#include <rdma/ib_pma.h> 42219820Sjeff 43219820Sjeff#include "mlx4_ib.h" 44219820Sjeff 45219820Sjeffenum { 46219820Sjeff MLX4_IB_VENDOR_CLASS1 = 0x9, 47219820Sjeff MLX4_IB_VENDOR_CLASS2 = 0xa 48219820Sjeff}; 49219820Sjeff 50255932Salfred#define MLX4_TUN_SEND_WRID_SHIFT 34 51255932Salfred#define MLX4_TUN_QPN_SHIFT 32 52255932Salfred#define MLX4_TUN_WRID_RECV (((u64) 1) << MLX4_TUN_SEND_WRID_SHIFT) 53255932Salfred#define MLX4_TUN_SET_WRID_QPN(a) (((u64) ((a) & 0x3)) << MLX4_TUN_QPN_SHIFT) 54255932Salfred 55255932Salfred#define MLX4_TUN_IS_RECV(a) (((a) >> MLX4_TUN_SEND_WRID_SHIFT) & 0x1) 56255932Salfred#define MLX4_TUN_WRID_QPN(a) (((a) >> MLX4_TUN_QPN_SHIFT) & 0x3) 57255932Salfred 58255932Salfred /* Port mgmt change event handling */ 59255932Salfred 60255932Salfred#define GET_BLK_PTR_FROM_EQE(eqe) be32_to_cpu(eqe->event.port_mgmt_change.params.tbl_change_info.block_ptr) 61255932Salfred#define GET_MASK_FROM_EQE(eqe) be32_to_cpu(eqe->event.port_mgmt_change.params.tbl_change_info.tbl_entries_mask) 62255932Salfred#define NUM_IDX_IN_PKEY_TBL_BLK 32 63255932Salfred#define GUID_TBL_ENTRY_SIZE 8 /* size in bytes */ 64255932Salfred#define GUID_TBL_BLK_NUM_ENTRIES 8 65255932Salfred#define GUID_TBL_BLK_SIZE (GUID_TBL_ENTRY_SIZE * GUID_TBL_BLK_NUM_ENTRIES) 66255932Salfred 67255932Salfredstruct mlx4_mad_rcv_buf { 68255932Salfred struct ib_grh grh; 69255932Salfred u8 payload[256]; 70255932Salfred} __packed; 71255932Salfred 72255932Salfredstruct mlx4_mad_snd_buf { 73255932Salfred u8 payload[256]; 74255932Salfred} __packed; 75255932Salfred 76255932Salfredstruct mlx4_tunnel_mad { 77255932Salfred struct ib_grh grh; 78255932Salfred struct mlx4_ib_tunnel_header hdr; 79255932Salfred struct ib_mad mad; 80255932Salfred} __packed; 81255932Salfred 82255932Salfredstruct mlx4_rcv_tunnel_mad { 83255932Salfred struct mlx4_rcv_tunnel_hdr hdr; 84255932Salfred struct ib_grh grh; 85255932Salfred struct ib_mad mad; 86255932Salfred} __packed; 87255932Salfred 88255932Salfredstatic void handle_client_rereg_event(struct mlx4_ib_dev *dev, u8 port_num); 89255932Salfredstatic void handle_lid_change_event(struct mlx4_ib_dev *dev, u8 port_num); 90255932Salfredstatic void __propagate_pkey_ev(struct mlx4_ib_dev *dev, int port_num, 91255932Salfred int block, u32 change_bitmap); 92255932Salfred 93255932Salfred__be64 mlx4_ib_gen_node_guid(void) 94255932Salfred{ 95255932Salfred#define NODE_GUID_HI ((u64) (((u64)IB_OPENIB_OUI) << 40)) 96255932Salfred return cpu_to_be64(NODE_GUID_HI | random()); 97255932Salfred} 98255932Salfred 99255932Salfred__be64 mlx4_ib_get_new_demux_tid(struct mlx4_ib_demux_ctx *ctx) 100255932Salfred{ 101255932Salfred return cpu_to_be64(atomic_inc_return(&ctx->tid)) | 102255932Salfred cpu_to_be64(0xff00000000000000LL); 103255932Salfred} 104255932Salfred 105255932Salfredint mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int mad_ifc_flags, 106219820Sjeff int port, struct ib_wc *in_wc, struct ib_grh *in_grh, 107219820Sjeff void *in_mad, void *response_mad) 108219820Sjeff{ 109219820Sjeff struct mlx4_cmd_mailbox *inmailbox, *outmailbox; 110219820Sjeff void *inbox; 111219820Sjeff int err; 112219820Sjeff u32 in_modifier = port; 113219820Sjeff u8 op_modifier = 0; 114219820Sjeff 115219820Sjeff inmailbox = mlx4_alloc_cmd_mailbox(dev->dev); 116219820Sjeff if (IS_ERR(inmailbox)) 117219820Sjeff return PTR_ERR(inmailbox); 118219820Sjeff inbox = inmailbox->buf; 119219820Sjeff 120219820Sjeff outmailbox = mlx4_alloc_cmd_mailbox(dev->dev); 121219820Sjeff if (IS_ERR(outmailbox)) { 122219820Sjeff mlx4_free_cmd_mailbox(dev->dev, inmailbox); 123219820Sjeff return PTR_ERR(outmailbox); 124219820Sjeff } 125219820Sjeff 126219820Sjeff memcpy(inbox, in_mad, 256); 127219820Sjeff 128219820Sjeff /* 129219820Sjeff * Key check traps can't be generated unless we have in_wc to 130219820Sjeff * tell us where to send the trap. 131219820Sjeff */ 132255932Salfred if ((mad_ifc_flags & MLX4_MAD_IFC_IGNORE_MKEY) || !in_wc) 133219820Sjeff op_modifier |= 0x1; 134255932Salfred if ((mad_ifc_flags & MLX4_MAD_IFC_IGNORE_BKEY) || !in_wc) 135219820Sjeff op_modifier |= 0x2; 136255932Salfred if (mlx4_is_mfunc(dev->dev) && 137255932Salfred (mad_ifc_flags & MLX4_MAD_IFC_NET_VIEW || in_wc)) 138255932Salfred op_modifier |= 0x8; 139219820Sjeff 140219820Sjeff if (in_wc) { 141219820Sjeff struct { 142219820Sjeff __be32 my_qpn; 143219820Sjeff u32 reserved1; 144219820Sjeff __be32 rqpn; 145219820Sjeff u8 sl; 146219820Sjeff u8 g_path; 147219820Sjeff u16 reserved2[2]; 148219820Sjeff __be16 pkey; 149219820Sjeff u32 reserved3[11]; 150219820Sjeff u8 grh[40]; 151219820Sjeff } *ext_info; 152219820Sjeff 153219820Sjeff memset(inbox + 256, 0, 256); 154219820Sjeff ext_info = inbox + 256; 155219820Sjeff 156219820Sjeff ext_info->my_qpn = cpu_to_be32(in_wc->qp->qp_num); 157219820Sjeff ext_info->rqpn = cpu_to_be32(in_wc->src_qp); 158219820Sjeff ext_info->sl = in_wc->sl << 4; 159219820Sjeff ext_info->g_path = in_wc->dlid_path_bits | 160219820Sjeff (in_wc->wc_flags & IB_WC_GRH ? 0x80 : 0); 161219820Sjeff ext_info->pkey = cpu_to_be16(in_wc->pkey_index); 162219820Sjeff 163219820Sjeff if (in_grh) 164219820Sjeff memcpy(ext_info->grh, in_grh, 40); 165219820Sjeff 166219820Sjeff op_modifier |= 0x4; 167219820Sjeff 168219820Sjeff in_modifier |= in_wc->slid << 16; 169219820Sjeff } 170219820Sjeff 171255932Salfred err = mlx4_cmd_box(dev->dev, inmailbox->dma, outmailbox->dma, in_modifier, 172255932Salfred mlx4_is_master(dev->dev) ? (op_modifier & ~0x8) : op_modifier, 173255932Salfred MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C, 174255932Salfred (op_modifier & 0x8) ? MLX4_CMD_NATIVE : MLX4_CMD_WRAPPED); 175219820Sjeff 176219820Sjeff if (!err) 177219820Sjeff memcpy(response_mad, outmailbox->buf, 256); 178219820Sjeff 179219820Sjeff mlx4_free_cmd_mailbox(dev->dev, inmailbox); 180219820Sjeff mlx4_free_cmd_mailbox(dev->dev, outmailbox); 181219820Sjeff 182219820Sjeff return err; 183219820Sjeff} 184219820Sjeff 185219820Sjeffstatic void update_sm_ah(struct mlx4_ib_dev *dev, u8 port_num, u16 lid, u8 sl) 186219820Sjeff{ 187219820Sjeff struct ib_ah *new_ah; 188219820Sjeff struct ib_ah_attr ah_attr; 189255932Salfred unsigned long flags; 190219820Sjeff 191219820Sjeff if (!dev->send_agent[port_num - 1][0]) 192219820Sjeff return; 193219820Sjeff 194219820Sjeff memset(&ah_attr, 0, sizeof ah_attr); 195219820Sjeff ah_attr.dlid = lid; 196219820Sjeff ah_attr.sl = sl; 197219820Sjeff ah_attr.port_num = port_num; 198219820Sjeff 199219820Sjeff new_ah = ib_create_ah(dev->send_agent[port_num - 1][0]->qp->pd, 200219820Sjeff &ah_attr); 201219820Sjeff if (IS_ERR(new_ah)) 202219820Sjeff return; 203219820Sjeff 204255932Salfred spin_lock_irqsave(&dev->sm_lock, flags); 205219820Sjeff if (dev->sm_ah[port_num - 1]) 206219820Sjeff ib_destroy_ah(dev->sm_ah[port_num - 1]); 207219820Sjeff dev->sm_ah[port_num - 1] = new_ah; 208255932Salfred spin_unlock_irqrestore(&dev->sm_lock, flags); 209219820Sjeff} 210219820Sjeff 211219820Sjeff/* 212255932Salfred * Snoop SM MADs for port info, GUID info, and P_Key table sets, so we can 213255932Salfred * synthesize LID change, Client-Rereg, GID change, and P_Key change events. 214219820Sjeff */ 215219820Sjeffstatic void smp_snoop(struct ib_device *ibdev, u8 port_num, struct ib_mad *mad, 216255932Salfred u16 prev_lid) 217219820Sjeff{ 218255932Salfred struct ib_port_info *pinfo; 219255932Salfred u16 lid; 220255932Salfred __be16 *base; 221255932Salfred u32 bn, pkey_change_bitmap; 222255932Salfred int i; 223219820Sjeff 224255932Salfred 225255932Salfred struct mlx4_ib_dev *dev = to_mdev(ibdev); 226219820Sjeff if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || 227219820Sjeff mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) && 228255932Salfred mad->mad_hdr.method == IB_MGMT_METHOD_SET) 229255932Salfred switch (mad->mad_hdr.attr_id) { 230255932Salfred case IB_SMP_ATTR_PORT_INFO: 231255932Salfred pinfo = (struct ib_port_info *) ((struct ib_smp *) mad)->data; 232255932Salfred lid = be16_to_cpu(pinfo->lid); 233219820Sjeff 234255932Salfred update_sm_ah(dev, port_num, 235219820Sjeff be16_to_cpu(pinfo->sm_lid), 236219820Sjeff pinfo->neighbormtu_mastersmsl & 0xf); 237219820Sjeff 238255932Salfred if (pinfo->clientrereg_resv_subnetto & 0x80) 239255932Salfred handle_client_rereg_event(dev, port_num); 240219820Sjeff 241255932Salfred if (prev_lid != lid) 242255932Salfred handle_lid_change_event(dev, port_num); 243255932Salfred break; 244255932Salfred 245255932Salfred case IB_SMP_ATTR_PKEY_TABLE: 246255932Salfred if (!mlx4_is_mfunc(dev->dev)) { 247255932Salfred mlx4_ib_dispatch_event(dev, port_num, 248255932Salfred IB_EVENT_PKEY_CHANGE); 249255932Salfred break; 250219820Sjeff } 251219820Sjeff 252255932Salfred /* at this point, we are running in the master. 253255932Salfred * Slaves do not receive SMPs. 254255932Salfred */ 255255932Salfred bn = be32_to_cpu(((struct ib_smp *)mad)->attr_mod) & 0xFFFF; 256255932Salfred base = (__be16 *) &(((struct ib_smp *)mad)->data[0]); 257255932Salfred pkey_change_bitmap = 0; 258255932Salfred for (i = 0; i < 32; i++) { 259255932Salfred pr_debug("PKEY[%d] = x%x\n", 260255932Salfred i + bn*32, be16_to_cpu(base[i])); 261255932Salfred if (be16_to_cpu(base[i]) != 262255932Salfred dev->pkeys.phys_pkey_cache[port_num - 1][i + bn*32]) { 263255932Salfred pkey_change_bitmap |= (1 << i); 264255932Salfred dev->pkeys.phys_pkey_cache[port_num - 1][i + bn*32] = 265255932Salfred be16_to_cpu(base[i]); 266255932Salfred } 267219820Sjeff } 268255932Salfred pr_debug("PKEY Change event: port=%d, " 269255932Salfred "block=0x%x, change_bitmap=0x%x\n", 270255932Salfred port_num, bn, pkey_change_bitmap); 271255932Salfred 272255932Salfred if (pkey_change_bitmap) { 273255932Salfred mlx4_ib_dispatch_event(dev, port_num, 274255932Salfred IB_EVENT_PKEY_CHANGE); 275255932Salfred if (!dev->sriov.is_going_down) 276255932Salfred __propagate_pkey_ev(dev, port_num, bn, 277255932Salfred pkey_change_bitmap); 278255932Salfred } 279255932Salfred break; 280255932Salfred 281255932Salfred case IB_SMP_ATTR_GUID_INFO: 282255932Salfred /* paravirtualized master's guid is guid 0 -- does not change */ 283255932Salfred if (!mlx4_is_master(dev->dev)) 284255932Salfred mlx4_ib_dispatch_event(dev, port_num, 285255932Salfred IB_EVENT_GID_CHANGE); 286255932Salfred /*if master, notify relevant slaves*/ 287255932Salfred if (mlx4_is_master(dev->dev) && 288255932Salfred !dev->sriov.is_going_down) { 289255932Salfred bn = be32_to_cpu(((struct ib_smp *)mad)->attr_mod); 290255932Salfred mlx4_ib_update_cache_on_guid_change(dev, bn, port_num, 291255932Salfred (u8 *)(&((struct ib_smp *)mad)->data)); 292255932Salfred mlx4_ib_notify_slaves_on_guid_change(dev, bn, port_num, 293255932Salfred (u8 *)(&((struct ib_smp *)mad)->data)); 294255932Salfred } 295255932Salfred break; 296255932Salfred 297255932Salfred default: 298255932Salfred break; 299219820Sjeff } 300255932Salfred} 301219820Sjeff 302255932Salfredstatic void __propagate_pkey_ev(struct mlx4_ib_dev *dev, int port_num, 303255932Salfred int block, u32 change_bitmap) 304255932Salfred{ 305255932Salfred int i, ix, slave, err; 306255932Salfred int have_event = 0; 307255932Salfred 308255932Salfred for (slave = 0; slave < dev->dev->caps.sqp_demux; slave++) { 309255932Salfred if (slave == mlx4_master_func_num(dev->dev)) 310255932Salfred continue; 311255932Salfred if (!mlx4_is_slave_active(dev->dev, slave)) 312255932Salfred continue; 313255932Salfred 314255932Salfred have_event = 0; 315255932Salfred for (i = 0; i < 32; i++) { 316255932Salfred if (!(change_bitmap & (1 << i))) 317255932Salfred continue; 318255932Salfred for (ix = 0; 319255932Salfred ix < dev->dev->caps.pkey_table_len[port_num]; ix++) { 320255932Salfred if (dev->pkeys.virt2phys_pkey[slave][port_num - 1] 321255932Salfred [ix] == i + 32 * block) { 322255932Salfred err = mlx4_gen_pkey_eqe(dev->dev, slave, port_num); 323255932Salfred pr_debug("propagate_pkey_ev: slave %d," 324255932Salfred " port %d, ix %d (%d)\n", 325255932Salfred slave, port_num, ix, err); 326255932Salfred have_event = 1; 327255932Salfred break; 328255932Salfred } 329255932Salfred } 330255932Salfred if (have_event) 331255932Salfred break; 332219820Sjeff } 333219820Sjeff } 334219820Sjeff} 335219820Sjeff 336219820Sjeffstatic void node_desc_override(struct ib_device *dev, 337219820Sjeff struct ib_mad *mad) 338219820Sjeff{ 339255932Salfred unsigned long flags; 340255932Salfred 341219820Sjeff if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || 342219820Sjeff mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) && 343219820Sjeff mad->mad_hdr.method == IB_MGMT_METHOD_GET_RESP && 344219820Sjeff mad->mad_hdr.attr_id == IB_SMP_ATTR_NODE_DESC) { 345255932Salfred spin_lock_irqsave(&to_mdev(dev)->sm_lock, flags); 346219820Sjeff memcpy(((struct ib_smp *) mad)->data, dev->node_desc, 64); 347255932Salfred spin_unlock_irqrestore(&to_mdev(dev)->sm_lock, flags); 348219820Sjeff } 349219820Sjeff} 350219820Sjeff 351219820Sjeffstatic void forward_trap(struct mlx4_ib_dev *dev, u8 port_num, struct ib_mad *mad) 352219820Sjeff{ 353219820Sjeff int qpn = mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED; 354219820Sjeff struct ib_mad_send_buf *send_buf; 355219820Sjeff struct ib_mad_agent *agent = dev->send_agent[port_num - 1][qpn]; 356219820Sjeff int ret; 357255932Salfred unsigned long flags; 358219820Sjeff 359219820Sjeff if (agent) { 360219820Sjeff send_buf = ib_create_send_mad(agent, qpn, 0, 0, IB_MGMT_MAD_HDR, 361219820Sjeff IB_MGMT_MAD_DATA, GFP_ATOMIC); 362255932Salfred if (IS_ERR(send_buf)) 363255932Salfred return; 364219820Sjeff /* 365219820Sjeff * We rely here on the fact that MLX QPs don't use the 366219820Sjeff * address handle after the send is posted (this is 367219820Sjeff * wrong following the IB spec strictly, but we know 368219820Sjeff * it's OK for our devices). 369219820Sjeff */ 370255932Salfred spin_lock_irqsave(&dev->sm_lock, flags); 371219820Sjeff memcpy(send_buf->mad, mad, sizeof *mad); 372219820Sjeff if ((send_buf->ah = dev->sm_ah[port_num - 1])) 373219820Sjeff ret = ib_post_send_mad(send_buf, NULL); 374219820Sjeff else 375219820Sjeff ret = -EINVAL; 376255932Salfred spin_unlock_irqrestore(&dev->sm_lock, flags); 377219820Sjeff 378219820Sjeff if (ret) 379219820Sjeff ib_free_send_mad(send_buf); 380219820Sjeff } 381219820Sjeff} 382219820Sjeff 383255932Salfredstatic int mlx4_ib_demux_sa_handler(struct ib_device *ibdev, int port, int slave, 384255932Salfred struct ib_sa_mad *sa_mad) 385219820Sjeff{ 386255932Salfred int ret = 0; 387255932Salfred 388255932Salfred /* dispatch to different sa handlers */ 389255932Salfred switch (be16_to_cpu(sa_mad->mad_hdr.attr_id)) { 390255932Salfred case IB_SA_ATTR_MC_MEMBER_REC: 391255932Salfred ret = mlx4_ib_mcg_demux_handler(ibdev, port, slave, sa_mad); 392255932Salfred break; 393255932Salfred default: 394255932Salfred break; 395255932Salfred } 396255932Salfred return ret; 397219820Sjeff} 398219820Sjeff 399255932Salfredint mlx4_ib_find_real_gid(struct ib_device *ibdev, u8 port, __be64 guid) 400219820Sjeff{ 401255932Salfred struct mlx4_ib_dev *dev = to_mdev(ibdev); 402255932Salfred int i; 403255932Salfred 404255932Salfred for (i = 0; i < dev->dev->caps.sqp_demux; i++) { 405255932Salfred if (dev->sriov.demux[port - 1].guid_cache[i] == guid) 406255932Salfred return i; 407255932Salfred } 408255932Salfred return -1; 409219820Sjeff} 410219820Sjeff 411255932Salfred 412255932Salfredstatic int find_slave_port_pkey_ix(struct mlx4_ib_dev *dev, int slave, 413255932Salfred u8 port, u16 pkey, u16 *ix) 414255932Salfred{ 415255932Salfred int i, ret; 416255932Salfred u8 unassigned_pkey_ix, pkey_ix, partial_ix = 0xFF; 417255932Salfred u16 slot_pkey; 418255932Salfred 419255932Salfred if (slave == mlx4_master_func_num(dev->dev)) 420255932Salfred return ib_find_cached_pkey(&dev->ib_dev, port, pkey, ix); 421255932Salfred 422255932Salfred unassigned_pkey_ix = dev->dev->phys_caps.pkey_phys_table_len[port] - 1; 423255932Salfred 424255932Salfred for (i = 0; i < dev->dev->caps.pkey_table_len[port]; i++) { 425255932Salfred if (dev->pkeys.virt2phys_pkey[slave][port - 1][i] == unassigned_pkey_ix) 426255932Salfred continue; 427255932Salfred 428255932Salfred pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][i]; 429255932Salfred 430255932Salfred ret = ib_get_cached_pkey(&dev->ib_dev, port, pkey_ix, &slot_pkey); 431255932Salfred if (ret) 432255932Salfred continue; 433255932Salfred if ((slot_pkey & 0x7FFF) == (pkey & 0x7FFF)) { 434255932Salfred if (slot_pkey & 0x8000) { 435255932Salfred *ix = (u16) pkey_ix; 436255932Salfred return 0; 437255932Salfred } else { 438255932Salfred /* take first partial pkey index found */ 439255932Salfred if (partial_ix == 0xFF) 440255932Salfred partial_ix = pkey_ix; 441255932Salfred } 442255932Salfred } 443255932Salfred } 444255932Salfred 445255932Salfred if (partial_ix < 0xFF) { 446255932Salfred *ix = (u16) partial_ix; 447255932Salfred return 0; 448255932Salfred } 449255932Salfred 450255932Salfred return -EINVAL; 451255932Salfred} 452255932Salfred 453255932Salfredint mlx4_ib_send_to_slave(struct mlx4_ib_dev *dev, int slave, u8 port, 454255932Salfred enum ib_qp_type dest_qpt, struct ib_wc *wc, 455255932Salfred struct ib_grh *grh, struct ib_mad *mad) 456255932Salfred{ 457255932Salfred struct ib_sge list; 458255932Salfred struct ib_send_wr wr, *bad_wr; 459255932Salfred struct mlx4_ib_demux_pv_ctx *tun_ctx; 460255932Salfred struct mlx4_ib_demux_pv_qp *tun_qp; 461255932Salfred struct mlx4_rcv_tunnel_mad *tun_mad; 462255932Salfred struct ib_ah_attr attr; 463255932Salfred struct ib_ah *ah; 464255932Salfred struct ib_qp *src_qp = NULL; 465255932Salfred unsigned tun_tx_ix = 0; 466255932Salfred int dqpn; 467255932Salfred int ret = 0; 468255932Salfred u16 tun_pkey_ix; 469255932Salfred u16 cached_pkey; 470255932Salfred u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 471255932Salfred 472255932Salfred if (dest_qpt > IB_QPT_GSI) 473255932Salfred return -EINVAL; 474255932Salfred 475255932Salfred tun_ctx = dev->sriov.demux[port-1].tun[slave]; 476255932Salfred 477255932Salfred /* check if proxy qp created */ 478255932Salfred if (!tun_ctx || tun_ctx->state != DEMUX_PV_STATE_ACTIVE) 479255932Salfred return -EAGAIN; 480255932Salfred 481255932Salfred /* QP0 forwarding only for Dom0 */ 482255932Salfred if (!dest_qpt && (mlx4_master_func_num(dev->dev) != slave)) 483255932Salfred return -EINVAL; 484255932Salfred 485255932Salfred if (!dest_qpt) 486255932Salfred tun_qp = &tun_ctx->qp[0]; 487255932Salfred else 488255932Salfred tun_qp = &tun_ctx->qp[1]; 489255932Salfred 490255932Salfred /* compute P_Key index to put in tunnel header for slave */ 491255932Salfred if (dest_qpt) { 492255932Salfred u16 pkey_ix; 493255932Salfred ret = ib_get_cached_pkey(&dev->ib_dev, port, wc->pkey_index, &cached_pkey); 494255932Salfred if (ret) 495255932Salfred return -EINVAL; 496255932Salfred 497255932Salfred ret = find_slave_port_pkey_ix(dev, slave, port, cached_pkey, &pkey_ix); 498255932Salfred if (ret) 499255932Salfred return -EINVAL; 500255932Salfred tun_pkey_ix = pkey_ix; 501255932Salfred } else 502255932Salfred tun_pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][0]; 503255932Salfred 504255932Salfred dqpn = dev->dev->phys_caps.base_proxy_sqpn + 8 * slave + port + (dest_qpt * 2) - 1; 505255932Salfred 506255932Salfred /* get tunnel tx data buf for slave */ 507255932Salfred src_qp = tun_qp->qp; 508255932Salfred 509255932Salfred /* create ah. Just need an empty one with the port num for the post send. 510255932Salfred * The driver will set the force loopback bit in post_send */ 511255932Salfred memset(&attr, 0, sizeof attr); 512255932Salfred attr.port_num = port; 513255932Salfred if (is_eth) { 514255932Salfred memcpy(&attr.grh.dgid.raw[0], &grh->dgid.raw[0], 16); 515255932Salfred attr.ah_flags = IB_AH_GRH; 516255932Salfred } 517255932Salfred ah = ib_create_ah(tun_ctx->pd, &attr); 518255932Salfred if (IS_ERR(ah)) 519255932Salfred return -ENOMEM; 520255932Salfred 521255932Salfred /* allocate tunnel tx buf after pass failure returns */ 522255932Salfred spin_lock(&tun_qp->tx_lock); 523255932Salfred if (tun_qp->tx_ix_head - tun_qp->tx_ix_tail >= 524255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)) 525255932Salfred ret = -EAGAIN; 526255932Salfred else 527255932Salfred tun_tx_ix = (++tun_qp->tx_ix_head) & (MLX4_NUM_TUNNEL_BUFS - 1); 528255932Salfred spin_unlock(&tun_qp->tx_lock); 529255932Salfred if (ret) 530255932Salfred goto out; 531255932Salfred 532255932Salfred tun_mad = (struct mlx4_rcv_tunnel_mad *) (tun_qp->tx_ring[tun_tx_ix].buf.addr); 533255932Salfred if (tun_qp->tx_ring[tun_tx_ix].ah) 534255932Salfred ib_destroy_ah(tun_qp->tx_ring[tun_tx_ix].ah); 535255932Salfred tun_qp->tx_ring[tun_tx_ix].ah = ah; 536255932Salfred ib_dma_sync_single_for_cpu(&dev->ib_dev, 537255932Salfred tun_qp->tx_ring[tun_tx_ix].buf.map, 538255932Salfred sizeof (struct mlx4_rcv_tunnel_mad), 539255932Salfred DMA_TO_DEVICE); 540255932Salfred 541255932Salfred /* copy over to tunnel buffer */ 542255932Salfred if (grh) 543255932Salfred memcpy(&tun_mad->grh, grh, sizeof *grh); 544255932Salfred memcpy(&tun_mad->mad, mad, sizeof *mad); 545255932Salfred 546255932Salfred /* adjust tunnel data */ 547255932Salfred tun_mad->hdr.pkey_index = cpu_to_be16(tun_pkey_ix); 548255932Salfred tun_mad->hdr.flags_src_qp = cpu_to_be32(wc->src_qp & 0xFFFFFF); 549255932Salfred tun_mad->hdr.g_ml_path = (grh && (wc->wc_flags & IB_WC_GRH)) ? 0x80 : 0; 550255932Salfred 551278886Shselasky if (is_eth) { 552278886Shselasky u16 vlan = 0; 553278886Shselasky if (mlx4_get_slave_default_vlan(dev->dev, port, slave, &vlan, 554278886Shselasky NULL)) { 555278886Shselasky if (vlan != wc->vlan_id) 556278886Shselasky /* VST and default vlan is not the packet vlan drop the 557278886Shselasky * packet*/ 558278886Shselasky goto out; 559278886Shselasky else 560278886Shselasky /* VST , remove hide the vlan from the VF */ 561278886Shselasky vlan = 0; 562278886Shselasky } else { 563278886Shselasky vlan = wc->vlan_id; 564278886Shselasky } 565278886Shselasky 566278886Shselasky tun_mad->hdr.sl_vid = cpu_to_be16(vlan); 567278886Shselasky memcpy((char *)&tun_mad->hdr.mac_31_0, &(wc->smac[0]), 4); 568278886Shselasky memcpy((char *)&tun_mad->hdr.slid_mac_47_32, &(wc->smac[4]), 2); 569278886Shselasky } else { 570278886Shselasky tun_mad->hdr.sl_vid = cpu_to_be16(((u16)(wc->sl)) << 12); 571278886Shselasky tun_mad->hdr.slid_mac_47_32 = cpu_to_be16(wc->slid); 572278886Shselasky } 573278886Shselasky 574255932Salfred ib_dma_sync_single_for_device(&dev->ib_dev, 575255932Salfred tun_qp->tx_ring[tun_tx_ix].buf.map, 576255932Salfred sizeof (struct mlx4_rcv_tunnel_mad), 577255932Salfred DMA_TO_DEVICE); 578255932Salfred 579255932Salfred list.addr = tun_qp->tx_ring[tun_tx_ix].buf.map; 580255932Salfred list.length = sizeof (struct mlx4_rcv_tunnel_mad); 581255932Salfred list.lkey = tun_ctx->mr->lkey; 582255932Salfred 583255932Salfred wr.wr.ud.ah = ah; 584255932Salfred wr.wr.ud.port_num = port; 585255932Salfred wr.wr.ud.remote_qkey = IB_QP_SET_QKEY; 586255932Salfred wr.wr.ud.remote_qpn = dqpn; 587255932Salfred wr.next = NULL; 588255932Salfred wr.wr_id = ((u64) tun_tx_ix) | MLX4_TUN_SET_WRID_QPN(dest_qpt); 589255932Salfred wr.sg_list = &list; 590255932Salfred wr.num_sge = 1; 591255932Salfred wr.opcode = IB_WR_SEND; 592255932Salfred wr.send_flags = IB_SEND_SIGNALED; 593255932Salfred 594255932Salfred ret = ib_post_send(src_qp, &wr, &bad_wr); 595255932Salfredout: 596255932Salfred if (ret) 597255932Salfred ib_destroy_ah(ah); 598255932Salfred return ret; 599255932Salfred} 600255932Salfred 601255932Salfredstatic int mlx4_ib_demux_mad(struct ib_device *ibdev, u8 port, 602255932Salfred struct ib_wc *wc, struct ib_grh *grh, 603255932Salfred struct ib_mad *mad) 604255932Salfred{ 605255932Salfred struct mlx4_ib_dev *dev = to_mdev(ibdev); 606255932Salfred int err; 607255932Salfred int slave; 608255932Salfred u8 *slave_id; 609255932Salfred int is_eth = 0; 610255932Salfred 611255932Salfred if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND) 612255932Salfred is_eth = 0; 613255932Salfred else 614255932Salfred is_eth = 1; 615255932Salfred 616255932Salfred if (is_eth) { 617329159Shselasky if (!(wc->wc_flags & IB_WC_GRH)) { 618255932Salfred mlx4_ib_warn(ibdev, "RoCE grh not present.\n"); 619255932Salfred return -EINVAL; 620255932Salfred } 621255932Salfred if (mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_CM) { 622255932Salfred mlx4_ib_warn(ibdev, "RoCE mgmt class is not CM\n"); 623255932Salfred return -EINVAL; 624255932Salfred } 625255932Salfred if (mlx4_get_slave_from_roce_gid(dev->dev, port, grh->dgid.raw, &slave)) { 626255932Salfred mlx4_ib_warn(ibdev, "failed matching grh\n"); 627255932Salfred return -ENOENT; 628255932Salfred } 629255932Salfred if (slave >= dev->dev->caps.sqp_demux) { 630255932Salfred mlx4_ib_warn(ibdev, "slave id: %d is bigger than allowed:%d\n", 631255932Salfred slave, dev->dev->caps.sqp_demux); 632255932Salfred return -ENOENT; 633255932Salfred } 634255932Salfred 635255932Salfred if (mlx4_ib_demux_cm_handler(ibdev, port, &slave, mad, is_eth)) 636255932Salfred return 0; 637255932Salfred 638255932Salfred err = mlx4_ib_send_to_slave(dev, slave, port, wc->qp->qp_type, wc, grh, mad); 639255932Salfred if (err) 640255932Salfred pr_debug("failed sending to slave %d via tunnel qp (%d)\n", 641255932Salfred slave, err); 642255932Salfred return 0; 643255932Salfred } 644255932Salfred 645255932Salfred /* Initially assume that this mad is for us */ 646255932Salfred slave = mlx4_master_func_num(dev->dev); 647255932Salfred 648255932Salfred /* See if the slave id is encoded in a response mad */ 649255932Salfred if (mad->mad_hdr.method & 0x80) { 650255932Salfred slave_id = (u8 *) &mad->mad_hdr.tid; 651255932Salfred slave = *slave_id; 652255932Salfred if (slave != 255) /*255 indicates the dom0*/ 653255932Salfred *slave_id = 0; /* remap tid */ 654255932Salfred } 655255932Salfred 656255932Salfred /* If a grh is present, we demux according to it */ 657255932Salfred if (wc->wc_flags & IB_WC_GRH) { 658255932Salfred slave = mlx4_ib_find_real_gid(ibdev, port, grh->dgid.global.interface_id); 659255932Salfred if (slave < 0) { 660255932Salfred mlx4_ib_warn(ibdev, "failed matching grh\n"); 661255932Salfred return -ENOENT; 662255932Salfred } 663255932Salfred } 664255932Salfred /* Class-specific handling */ 665255932Salfred switch (mad->mad_hdr.mgmt_class) { 666255932Salfred case IB_MGMT_CLASS_SUBN_ADM: 667255932Salfred if (mlx4_ib_demux_sa_handler(ibdev, port, slave, 668255932Salfred (struct ib_sa_mad *) mad)) 669255932Salfred return 0; 670255932Salfred break; 671255932Salfred case IB_MGMT_CLASS_CM: 672255932Salfred if (mlx4_ib_demux_cm_handler(ibdev, port, &slave, mad, is_eth)) 673255932Salfred return 0; 674255932Salfred break; 675255932Salfred case IB_MGMT_CLASS_DEVICE_MGMT: 676255932Salfred if (mad->mad_hdr.method != IB_MGMT_METHOD_GET_RESP) 677255932Salfred return 0; 678255932Salfred break; 679255932Salfred default: 680255932Salfred /* Drop unsupported classes for slaves in tunnel mode */ 681255932Salfred if (slave != mlx4_master_func_num(dev->dev)) { 682255932Salfred pr_debug("dropping unsupported ingress mad from class:%d " 683255932Salfred "for slave:%d\n", mad->mad_hdr.mgmt_class, slave); 684255932Salfred return 0; 685255932Salfred } 686255932Salfred } 687255932Salfred /*make sure that no slave==255 was not handled yet.*/ 688255932Salfred if (slave >= dev->dev->caps.sqp_demux) { 689255932Salfred mlx4_ib_warn(ibdev, "slave id: %d is bigger than allowed:%d\n", 690255932Salfred slave, dev->dev->caps.sqp_demux); 691255932Salfred return -ENOENT; 692255932Salfred } 693255932Salfred 694255932Salfred err = mlx4_ib_send_to_slave(dev, slave, port, wc->qp->qp_type, wc, grh, mad); 695255932Salfred if (err) 696255932Salfred pr_debug("failed sending to slave %d via tunnel qp (%d)\n", 697255932Salfred slave, err); 698255932Salfred return 0; 699255932Salfred} 700255932Salfred 701219820Sjeffstatic int ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 702255932Salfred struct ib_wc *in_wc, struct ib_grh *in_grh, 703255932Salfred struct ib_mad *in_mad, struct ib_mad *out_mad) 704219820Sjeff{ 705219820Sjeff u16 slid, prev_lid = 0; 706219820Sjeff int err; 707219820Sjeff struct ib_port_attr pattr; 708219820Sjeff 709255932Salfred if (in_wc && in_wc->qp->qp_num) { 710255932Salfred pr_debug("received MAD: slid:%d sqpn:%d " 711255932Salfred "dlid_bits:%d dqpn:%d wc_flags:0x%x, cls %x, mtd %x, atr %x\n", 712255932Salfred in_wc->slid, in_wc->src_qp, 713255932Salfred in_wc->dlid_path_bits, 714255932Salfred in_wc->qp->qp_num, 715255932Salfred in_wc->wc_flags, 716255932Salfred in_mad->mad_hdr.mgmt_class, in_mad->mad_hdr.method, 717255932Salfred be16_to_cpu(in_mad->mad_hdr.attr_id)); 718255932Salfred if (in_wc->wc_flags & IB_WC_GRH) { 719255932Salfred pr_debug("sgid_hi:0x%016llx sgid_lo:0x%016llx\n", 720278886Shselasky (unsigned long long)be64_to_cpu(in_grh->sgid.global.subnet_prefix), 721278886Shselasky (unsigned long long)be64_to_cpu(in_grh->sgid.global.interface_id)); 722255932Salfred pr_debug("dgid_hi:0x%016llx dgid_lo:0x%016llx\n", 723278886Shselasky (unsigned long long)be64_to_cpu(in_grh->dgid.global.subnet_prefix), 724278886Shselasky (unsigned long long)be64_to_cpu(in_grh->dgid.global.interface_id)); 725255932Salfred } 726255932Salfred } 727255932Salfred 728219820Sjeff slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE); 729219820Sjeff 730219820Sjeff if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0) { 731219820Sjeff forward_trap(to_mdev(ibdev), port_num, in_mad); 732219820Sjeff return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 733219820Sjeff } 734219820Sjeff 735219820Sjeff if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || 736219820Sjeff in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { 737219820Sjeff if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET && 738219820Sjeff in_mad->mad_hdr.method != IB_MGMT_METHOD_SET && 739219820Sjeff in_mad->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS) 740219820Sjeff return IB_MAD_RESULT_SUCCESS; 741219820Sjeff 742219820Sjeff /* 743255932Salfred * Don't process SMInfo queries -- the SMA can't handle them. 744219820Sjeff */ 745255932Salfred if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO) 746219820Sjeff return IB_MAD_RESULT_SUCCESS; 747219820Sjeff } else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT || 748219820Sjeff in_mad->mad_hdr.mgmt_class == MLX4_IB_VENDOR_CLASS1 || 749219820Sjeff in_mad->mad_hdr.mgmt_class == MLX4_IB_VENDOR_CLASS2 || 750219820Sjeff in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_CONG_MGMT) { 751219820Sjeff if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET && 752219820Sjeff in_mad->mad_hdr.method != IB_MGMT_METHOD_SET) 753219820Sjeff return IB_MAD_RESULT_SUCCESS; 754219820Sjeff } else 755219820Sjeff return IB_MAD_RESULT_SUCCESS; 756219820Sjeff 757219820Sjeff if ((in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || 758219820Sjeff in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) && 759219820Sjeff in_mad->mad_hdr.method == IB_MGMT_METHOD_SET && 760219820Sjeff in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO && 761219820Sjeff !ib_query_port(ibdev, port_num, &pattr)) 762219820Sjeff prev_lid = pattr.lid; 763219820Sjeff 764219820Sjeff err = mlx4_MAD_IFC(to_mdev(ibdev), 765255932Salfred (mad_flags & IB_MAD_IGNORE_MKEY ? MLX4_MAD_IFC_IGNORE_MKEY : 0) | 766255932Salfred (mad_flags & IB_MAD_IGNORE_BKEY ? MLX4_MAD_IFC_IGNORE_BKEY : 0) | 767255932Salfred MLX4_MAD_IFC_NET_VIEW, 768219820Sjeff port_num, in_wc, in_grh, in_mad, out_mad); 769219820Sjeff if (err) 770219820Sjeff return IB_MAD_RESULT_FAILURE; 771219820Sjeff 772219820Sjeff if (!out_mad->mad_hdr.status) { 773255932Salfred if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_PORT_MNG_CHG_EV)) 774255932Salfred smp_snoop(ibdev, port_num, in_mad, prev_lid); 775255932Salfred /* slaves get node desc from FW */ 776255932Salfred if (!mlx4_is_slave(to_mdev(ibdev)->dev)) 777255932Salfred node_desc_override(ibdev, out_mad); 778219820Sjeff } 779219820Sjeff 780219820Sjeff /* set return bit in status of directed route responses */ 781219820Sjeff if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) 782219820Sjeff out_mad->mad_hdr.status |= cpu_to_be16(1 << 15); 783219820Sjeff 784219820Sjeff if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS) 785219820Sjeff /* no response for trap repress */ 786219820Sjeff return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 787219820Sjeff 788219820Sjeff return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 789219820Sjeff} 790219820Sjeff 791329159Shselaskystatic void edit_counter(struct mlx4_counter *cnt, void *counters, 792329159Shselasky __be16 attr_id) 793219820Sjeff{ 794255932Salfred switch (attr_id) { 795255932Salfred case IB_PMA_PORT_COUNTERS: 796255932Salfred { 797255932Salfred struct ib_pma_portcounters *pma_cnt = 798329159Shselasky (struct ib_pma_portcounters *)counters; 799255932Salfred 800329159Shselasky ASSIGN_32BIT_COUNTER(pma_cnt->port_xmit_data, 801329159Shselasky (be64_to_cpu(cnt->tx_bytes) >> 2)); 802329159Shselasky ASSIGN_32BIT_COUNTER(pma_cnt->port_rcv_data, 803329159Shselasky (be64_to_cpu(cnt->rx_bytes) >> 2)); 804329159Shselasky ASSIGN_32BIT_COUNTER(pma_cnt->port_xmit_packets, 805329159Shselasky be64_to_cpu(cnt->tx_frames)); 806329159Shselasky ASSIGN_32BIT_COUNTER(pma_cnt->port_rcv_packets, 807329159Shselasky be64_to_cpu(cnt->rx_frames)); 808255932Salfred break; 809255932Salfred } 810255932Salfred case IB_PMA_PORT_COUNTERS_EXT: 811255932Salfred { 812255932Salfred struct ib_pma_portcounters_ext *pma_cnt_ext = 813329159Shselasky (struct ib_pma_portcounters_ext *)counters; 814219820Sjeff 815255932Salfred pma_cnt_ext->port_xmit_data = 816329159Shselasky cpu_to_be64(be64_to_cpu(cnt->tx_bytes) >> 2); 817329159Shselasky pma_cnt_ext->port_rcv_data = 818329159Shselasky cpu_to_be64(be64_to_cpu(cnt->rx_bytes) >> 2); 819329159Shselasky pma_cnt_ext->port_xmit_packets = cnt->tx_frames; 820329159Shselasky pma_cnt_ext->port_rcv_packets = cnt->rx_frames; 821255932Salfred break; 822255932Salfred } 823255932Salfred default: 824255932Salfred break; 825255932Salfred } 826219820Sjeff} 827219820Sjeff 828255932Salfredstatic int iboe_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 829329159Shselasky const struct ib_wc *in_wc, const struct ib_grh *in_grh, 830329159Shselasky const struct ib_mad *in_mad, struct ib_mad *out_mad) 831255932Salfred{ 832329159Shselasky struct mlx4_counter counter_stats; 833255932Salfred struct mlx4_ib_dev *dev = to_mdev(ibdev); 834255932Salfred int err; 835278886Shselasky u32 counter_index = dev->counters[port_num - 1].counter_index & 0xffff; 836255932Salfred 837255932Salfred if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_PERF_MGMT) 838255932Salfred return -EINVAL; 839255932Salfred 840278886Shselasky /* in case of default counter IB shares the counter with ETH */ 841278886Shselasky /* the state could be -EEXIST or -ENOSPC */ 842278886Shselasky if (dev->counters[port_num - 1].status) { 843278886Shselasky memset(out_mad->data, 0, sizeof out_mad->data); 844278886Shselasky err = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 845255932Salfred } else { 846329159Shselasky memset(&counter_stats, 0, sizeof(counter_stats)); 847329159Shselasky err = mlx4_get_counter_stats(dev->dev, 848329159Shselasky counter_index, 849329159Shselasky &counter_stats, 0); 850329159Shselasky if (err) 851278886Shselasky return IB_MAD_RESULT_FAILURE; 852278886Shselasky 853278886Shselasky memset(out_mad->data, 0, sizeof(out_mad->data)); 854255932Salfred err = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 855329159Shselasky switch (counter_stats.counter_mode & 0xf) { 856219820Sjeff case 0: 857329159Shselasky edit_counter(&counter_stats, 858255932Salfred (void *)(out_mad->data + 40), 859255932Salfred in_mad->mad_hdr.attr_id); 860219820Sjeff break; 861219820Sjeff default: 862219820Sjeff err = IB_MAD_RESULT_FAILURE; 863219820Sjeff } 864219820Sjeff } 865219820Sjeff 866219820Sjeff return err; 867219820Sjeff} 868219820Sjeff 869255932Salfredint mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 870219820Sjeff struct ib_wc *in_wc, struct ib_grh *in_grh, 871219820Sjeff struct ib_mad *in_mad, struct ib_mad *out_mad) 872219820Sjeff{ 873219820Sjeff switch (rdma_port_get_link_layer(ibdev, port_num)) { 874219820Sjeff case IB_LINK_LAYER_INFINIBAND: 875219820Sjeff return ib_process_mad(ibdev, mad_flags, port_num, in_wc, 876219820Sjeff in_grh, in_mad, out_mad); 877219820Sjeff case IB_LINK_LAYER_ETHERNET: 878255932Salfred return iboe_process_mad(ibdev, mad_flags, port_num, in_wc, 879219820Sjeff in_grh, in_mad, out_mad); 880219820Sjeff default: 881219820Sjeff return -EINVAL; 882219820Sjeff } 883219820Sjeff} 884219820Sjeff 885219820Sjeffstatic void send_handler(struct ib_mad_agent *agent, 886219820Sjeff struct ib_mad_send_wc *mad_send_wc) 887219820Sjeff{ 888255932Salfred if (mad_send_wc->send_buf->context[0]) 889255932Salfred ib_destroy_ah(mad_send_wc->send_buf->context[0]); 890219820Sjeff ib_free_send_mad(mad_send_wc->send_buf); 891219820Sjeff} 892219820Sjeff 893219820Sjeffint mlx4_ib_mad_init(struct mlx4_ib_dev *dev) 894219820Sjeff{ 895219820Sjeff struct ib_mad_agent *agent; 896219820Sjeff int p, q; 897219820Sjeff int ret; 898219820Sjeff enum rdma_link_layer ll; 899219820Sjeff 900219820Sjeff for (p = 0; p < dev->num_ports; ++p) { 901219820Sjeff ll = rdma_port_get_link_layer(&dev->ib_dev, p + 1); 902219820Sjeff for (q = 0; q <= 1; ++q) { 903219820Sjeff if (ll == IB_LINK_LAYER_INFINIBAND) { 904219820Sjeff agent = ib_register_mad_agent(&dev->ib_dev, p + 1, 905219820Sjeff q ? IB_QPT_GSI : IB_QPT_SMI, 906219820Sjeff NULL, 0, send_handler, 907219820Sjeff NULL, NULL); 908219820Sjeff if (IS_ERR(agent)) { 909219820Sjeff ret = PTR_ERR(agent); 910219820Sjeff goto err; 911219820Sjeff } 912219820Sjeff dev->send_agent[p][q] = agent; 913219820Sjeff } else 914219820Sjeff dev->send_agent[p][q] = NULL; 915219820Sjeff } 916219820Sjeff } 917219820Sjeff 918219820Sjeff return 0; 919219820Sjeff 920219820Sjefferr: 921219820Sjeff for (p = 0; p < dev->num_ports; ++p) 922219820Sjeff for (q = 0; q <= 1; ++q) 923219820Sjeff if (dev->send_agent[p][q]) 924219820Sjeff ib_unregister_mad_agent(dev->send_agent[p][q]); 925219820Sjeff 926219820Sjeff return ret; 927219820Sjeff} 928219820Sjeff 929219820Sjeffvoid mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev) 930219820Sjeff{ 931219820Sjeff struct ib_mad_agent *agent; 932219820Sjeff int p, q; 933219820Sjeff 934219820Sjeff for (p = 0; p < dev->num_ports; ++p) { 935219820Sjeff for (q = 0; q <= 1; ++q) { 936219820Sjeff agent = dev->send_agent[p][q]; 937219820Sjeff if (agent) { 938219820Sjeff dev->send_agent[p][q] = NULL; 939219820Sjeff ib_unregister_mad_agent(agent); 940219820Sjeff } 941219820Sjeff } 942219820Sjeff 943219820Sjeff if (dev->sm_ah[p]) 944219820Sjeff ib_destroy_ah(dev->sm_ah[p]); 945219820Sjeff } 946219820Sjeff} 947255932Salfred 948255932Salfredstatic void handle_lid_change_event(struct mlx4_ib_dev *dev, u8 port_num) 949255932Salfred{ 950255932Salfred mlx4_ib_dispatch_event(dev, port_num, IB_EVENT_LID_CHANGE); 951255932Salfred 952255932Salfred if (mlx4_is_master(dev->dev) && !dev->sriov.is_going_down) 953255932Salfred mlx4_gen_slaves_port_mgt_ev(dev->dev, port_num, 954329159Shselasky MLX4_EQ_PORT_INFO_LID_CHANGE_MASK); 955255932Salfred} 956255932Salfred 957255932Salfredstatic void handle_client_rereg_event(struct mlx4_ib_dev *dev, u8 port_num) 958255932Salfred{ 959255932Salfred /* re-configure the alias-guid and mcg's */ 960255932Salfred if (mlx4_is_master(dev->dev)) { 961255932Salfred mlx4_ib_invalidate_all_guid_record(dev, port_num); 962255932Salfred 963255932Salfred if (!dev->sriov.is_going_down) { 964255932Salfred mlx4_ib_mcg_port_cleanup(&dev->sriov.demux[port_num - 1], 0); 965255932Salfred mlx4_gen_slaves_port_mgt_ev(dev->dev, port_num, 966329159Shselasky MLX4_EQ_PORT_INFO_CLIENT_REREG_MASK); 967255932Salfred } 968255932Salfred } 969255932Salfred mlx4_ib_dispatch_event(dev, port_num, IB_EVENT_CLIENT_REREGISTER); 970255932Salfred} 971255932Salfred 972255932Salfredstatic void propagate_pkey_ev(struct mlx4_ib_dev *dev, int port_num, 973255932Salfred struct mlx4_eqe *eqe) 974255932Salfred{ 975255932Salfred __propagate_pkey_ev(dev, port_num, GET_BLK_PTR_FROM_EQE(eqe), 976255932Salfred GET_MASK_FROM_EQE(eqe)); 977255932Salfred} 978255932Salfred 979255932Salfredstatic void handle_slaves_guid_change(struct mlx4_ib_dev *dev, u8 port_num, 980255932Salfred u32 guid_tbl_blk_num, u32 change_bitmap) 981255932Salfred{ 982255932Salfred struct ib_smp *in_mad = NULL; 983255932Salfred struct ib_smp *out_mad = NULL; 984255932Salfred u16 i; 985255932Salfred 986255932Salfred if (!mlx4_is_mfunc(dev->dev) || !mlx4_is_master(dev->dev)) 987255932Salfred return; 988255932Salfred 989255932Salfred in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL); 990255932Salfred out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 991255932Salfred if (!in_mad || !out_mad) { 992255932Salfred mlx4_ib_warn(&dev->ib_dev, "failed to allocate memory for guid info mads\n"); 993255932Salfred goto out; 994255932Salfred } 995255932Salfred 996255932Salfred guid_tbl_blk_num *= 4; 997255932Salfred 998255932Salfred for (i = 0; i < 4; i++) { 999255932Salfred if (change_bitmap && (!((change_bitmap >> (8 * i)) & 0xff))) 1000255932Salfred continue; 1001255932Salfred memset(in_mad, 0, sizeof *in_mad); 1002255932Salfred memset(out_mad, 0, sizeof *out_mad); 1003255932Salfred 1004255932Salfred in_mad->base_version = 1; 1005255932Salfred in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 1006255932Salfred in_mad->class_version = 1; 1007255932Salfred in_mad->method = IB_MGMT_METHOD_GET; 1008255932Salfred in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 1009255932Salfred in_mad->attr_mod = cpu_to_be32(guid_tbl_blk_num + i); 1010255932Salfred 1011255932Salfred if (mlx4_MAD_IFC(dev, 1012255932Salfred MLX4_MAD_IFC_IGNORE_KEYS | MLX4_MAD_IFC_NET_VIEW, 1013255932Salfred port_num, NULL, NULL, in_mad, out_mad)) { 1014255932Salfred mlx4_ib_warn(&dev->ib_dev, "Failed in get GUID INFO MAD_IFC\n"); 1015255932Salfred goto out; 1016255932Salfred } 1017255932Salfred 1018255932Salfred mlx4_ib_update_cache_on_guid_change(dev, guid_tbl_blk_num + i, 1019255932Salfred port_num, 1020255932Salfred (u8 *)(&((struct ib_smp *)out_mad)->data)); 1021255932Salfred mlx4_ib_notify_slaves_on_guid_change(dev, guid_tbl_blk_num + i, 1022255932Salfred port_num, 1023255932Salfred (u8 *)(&((struct ib_smp *)out_mad)->data)); 1024255932Salfred } 1025255932Salfred 1026255932Salfredout: 1027255932Salfred kfree(in_mad); 1028255932Salfred kfree(out_mad); 1029255932Salfred return; 1030255932Salfred} 1031255932Salfred 1032255932Salfredvoid handle_port_mgmt_change_event(struct work_struct *work) 1033255932Salfred{ 1034255932Salfred struct ib_event_work *ew = container_of(work, struct ib_event_work, work); 1035255932Salfred struct mlx4_ib_dev *dev = ew->ib_dev; 1036255932Salfred struct mlx4_eqe *eqe = &(ew->ib_eqe); 1037255932Salfred u8 port = eqe->event.port_mgmt_change.port; 1038255932Salfred u32 changed_attr; 1039255932Salfred u32 tbl_block; 1040255932Salfred u32 change_bitmap; 1041255932Salfred 1042255932Salfred switch (eqe->subtype) { 1043255932Salfred case MLX4_DEV_PMC_SUBTYPE_PORT_INFO: 1044255932Salfred changed_attr = be32_to_cpu(eqe->event.port_mgmt_change.params.port_info.changed_attr); 1045255932Salfred 1046255932Salfred /* Update the SM ah - This should be done before handling 1047255932Salfred the other changed attributes so that MADs can be sent to the SM */ 1048255932Salfred if (changed_attr & MSTR_SM_CHANGE_MASK) { 1049255932Salfred u16 lid = be16_to_cpu(eqe->event.port_mgmt_change.params.port_info.mstr_sm_lid); 1050255932Salfred u8 sl = eqe->event.port_mgmt_change.params.port_info.mstr_sm_sl & 0xf; 1051255932Salfred update_sm_ah(dev, port, lid, sl); 1052255932Salfred } 1053255932Salfred 1054255932Salfred /* Check if it is a lid change event */ 1055255932Salfred if (changed_attr & MLX4_EQ_PORT_INFO_LID_CHANGE_MASK) 1056255932Salfred handle_lid_change_event(dev, port); 1057255932Salfred 1058255932Salfred /* Generate GUID changed event */ 1059255932Salfred if (changed_attr & MLX4_EQ_PORT_INFO_GID_PFX_CHANGE_MASK) { 1060255932Salfred mlx4_ib_dispatch_event(dev, port, IB_EVENT_GID_CHANGE); 1061255932Salfred /*if master, notify all slaves*/ 1062255932Salfred if (mlx4_is_master(dev->dev)) 1063255932Salfred mlx4_gen_slaves_port_mgt_ev(dev->dev, port, 1064329159Shselasky MLX4_EQ_PORT_INFO_GID_PFX_CHANGE_MASK); 1065255932Salfred } 1066255932Salfred 1067255932Salfred if (changed_attr & MLX4_EQ_PORT_INFO_CLIENT_REREG_MASK) 1068255932Salfred handle_client_rereg_event(dev, port); 1069255932Salfred break; 1070255932Salfred 1071255932Salfred case MLX4_DEV_PMC_SUBTYPE_PKEY_TABLE: 1072255932Salfred mlx4_ib_dispatch_event(dev, port, IB_EVENT_PKEY_CHANGE); 1073255932Salfred if (mlx4_is_master(dev->dev) && !dev->sriov.is_going_down) 1074255932Salfred propagate_pkey_ev(dev, port, eqe); 1075255932Salfred break; 1076255932Salfred case MLX4_DEV_PMC_SUBTYPE_GUID_INFO: 1077255932Salfred /* paravirtualized master's guid is guid 0 -- does not change */ 1078255932Salfred if (!mlx4_is_master(dev->dev)) 1079255932Salfred mlx4_ib_dispatch_event(dev, port, IB_EVENT_GID_CHANGE); 1080255932Salfred /*if master, notify relevant slaves*/ 1081255932Salfred else if (!dev->sriov.is_going_down) { 1082255932Salfred tbl_block = GET_BLK_PTR_FROM_EQE(eqe); 1083255932Salfred change_bitmap = GET_MASK_FROM_EQE(eqe); 1084255932Salfred handle_slaves_guid_change(dev, port, tbl_block, change_bitmap); 1085255932Salfred } 1086255932Salfred break; 1087255932Salfred default: 1088255932Salfred pr_warn("Unsupported subtype 0x%x for " 1089255932Salfred "Port Management Change event\n", eqe->subtype); 1090255932Salfred } 1091255932Salfred 1092255932Salfred kfree(ew); 1093255932Salfred} 1094255932Salfred 1095255932Salfredvoid mlx4_ib_dispatch_event(struct mlx4_ib_dev *dev, u8 port_num, 1096255932Salfred enum ib_event_type type) 1097255932Salfred{ 1098255932Salfred struct ib_event event; 1099255932Salfred 1100255932Salfred event.device = &dev->ib_dev; 1101255932Salfred event.element.port_num = port_num; 1102255932Salfred event.event = type; 1103255932Salfred 1104255932Salfred ib_dispatch_event(&event); 1105255932Salfred} 1106255932Salfred 1107255932Salfredstatic void mlx4_ib_tunnel_comp_handler(struct ib_cq *cq, void *arg) 1108255932Salfred{ 1109255932Salfred unsigned long flags; 1110255932Salfred struct mlx4_ib_demux_pv_ctx *ctx = cq->cq_context; 1111255932Salfred struct mlx4_ib_dev *dev = to_mdev(ctx->ib_dev); 1112255932Salfred spin_lock_irqsave(&dev->sriov.going_down_lock, flags); 1113255932Salfred if (!dev->sriov.is_going_down && ctx->state == DEMUX_PV_STATE_ACTIVE) 1114255932Salfred queue_work(ctx->wq, &ctx->work); 1115255932Salfred spin_unlock_irqrestore(&dev->sriov.going_down_lock, flags); 1116255932Salfred} 1117255932Salfred 1118255932Salfredstatic int mlx4_ib_post_pv_qp_buf(struct mlx4_ib_demux_pv_ctx *ctx, 1119255932Salfred struct mlx4_ib_demux_pv_qp *tun_qp, 1120255932Salfred int index) 1121255932Salfred{ 1122255932Salfred struct ib_sge sg_list; 1123255932Salfred struct ib_recv_wr recv_wr, *bad_recv_wr; 1124255932Salfred int size; 1125255932Salfred 1126255932Salfred size = (tun_qp->qp->qp_type == IB_QPT_UD) ? 1127255932Salfred sizeof (struct mlx4_tunnel_mad) : sizeof (struct mlx4_mad_rcv_buf); 1128255932Salfred 1129255932Salfred sg_list.addr = tun_qp->ring[index].map; 1130255932Salfred sg_list.length = size; 1131255932Salfred sg_list.lkey = ctx->mr->lkey; 1132255932Salfred 1133255932Salfred recv_wr.next = NULL; 1134255932Salfred recv_wr.sg_list = &sg_list; 1135255932Salfred recv_wr.num_sge = 1; 1136255932Salfred recv_wr.wr_id = (u64) index | MLX4_TUN_WRID_RECV | 1137255932Salfred MLX4_TUN_SET_WRID_QPN(tun_qp->proxy_qpt); 1138255932Salfred ib_dma_sync_single_for_device(ctx->ib_dev, tun_qp->ring[index].map, 1139255932Salfred size, DMA_FROM_DEVICE); 1140255932Salfred return ib_post_recv(tun_qp->qp, &recv_wr, &bad_recv_wr); 1141255932Salfred} 1142255932Salfred 1143255932Salfredstatic int mlx4_ib_multiplex_sa_handler(struct ib_device *ibdev, int port, 1144255932Salfred int slave, struct ib_sa_mad *sa_mad) 1145255932Salfred{ 1146255932Salfred int ret = 0; 1147255932Salfred 1148255932Salfred /* dispatch to different sa handlers */ 1149255932Salfred switch (be16_to_cpu(sa_mad->mad_hdr.attr_id)) { 1150255932Salfred case IB_SA_ATTR_MC_MEMBER_REC: 1151255932Salfred ret = mlx4_ib_mcg_multiplex_handler(ibdev, port, slave, sa_mad); 1152255932Salfred break; 1153255932Salfred default: 1154255932Salfred break; 1155255932Salfred } 1156255932Salfred return ret; 1157255932Salfred} 1158255932Salfred 1159255932Salfredstatic int is_proxy_qp0(struct mlx4_ib_dev *dev, int qpn, int slave) 1160255932Salfred{ 1161255932Salfred int proxy_start = dev->dev->phys_caps.base_proxy_sqpn + 8 * slave; 1162255932Salfred 1163255932Salfred return (qpn >= proxy_start && qpn <= proxy_start + 1); 1164255932Salfred} 1165255932Salfred 1166255932Salfred 1167255932Salfredint mlx4_ib_send_to_wire(struct mlx4_ib_dev *dev, int slave, u8 port, 1168278886Shselasky enum ib_qp_type dest_qpt, u16 pkey_index, 1169278886Shselasky u32 remote_qpn, u32 qkey, struct ib_ah_attr *attr, 1170278886Shselasky u8 *s_mac, struct ib_mad *mad) 1171255932Salfred{ 1172255932Salfred struct ib_sge list; 1173255932Salfred struct ib_send_wr wr, *bad_wr; 1174255932Salfred struct mlx4_ib_demux_pv_ctx *sqp_ctx; 1175255932Salfred struct mlx4_ib_demux_pv_qp *sqp; 1176255932Salfred struct mlx4_mad_snd_buf *sqp_mad; 1177255932Salfred struct ib_ah *ah; 1178255932Salfred struct ib_qp *send_qp = NULL; 1179255932Salfred unsigned wire_tx_ix = 0; 1180255932Salfred int ret = 0; 1181255932Salfred u16 wire_pkey_ix; 1182255932Salfred int src_qpnum; 1183255932Salfred u8 sgid_index; 1184255932Salfred 1185255932Salfred 1186255932Salfred sqp_ctx = dev->sriov.sqps[port-1]; 1187255932Salfred 1188255932Salfred /* check if proxy qp created */ 1189255932Salfred if (!sqp_ctx || sqp_ctx->state != DEMUX_PV_STATE_ACTIVE) 1190255932Salfred return -EAGAIN; 1191255932Salfred 1192255932Salfred /* QP0 forwarding only for Dom0 */ 1193255932Salfred if (dest_qpt == IB_QPT_SMI && (mlx4_master_func_num(dev->dev) != slave)) 1194255932Salfred return -EINVAL; 1195255932Salfred 1196255932Salfred if (dest_qpt == IB_QPT_SMI) { 1197255932Salfred src_qpnum = 0; 1198255932Salfred sqp = &sqp_ctx->qp[0]; 1199255932Salfred wire_pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][0]; 1200255932Salfred } else { 1201255932Salfred src_qpnum = 1; 1202255932Salfred sqp = &sqp_ctx->qp[1]; 1203255932Salfred wire_pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][pkey_index]; 1204255932Salfred } 1205255932Salfred 1206255932Salfred send_qp = sqp->qp; 1207255932Salfred 1208255932Salfred /* create ah */ 1209255932Salfred sgid_index = attr->grh.sgid_index; 1210255932Salfred attr->grh.sgid_index = 0; 1211255932Salfred ah = ib_create_ah(sqp_ctx->pd, attr); 1212255932Salfred if (IS_ERR(ah)) 1213255932Salfred return -ENOMEM; 1214255932Salfred attr->grh.sgid_index = sgid_index; 1215255932Salfred to_mah(ah)->av.ib.gid_index = sgid_index; 1216255932Salfred /* get rid of force-loopback bit */ 1217255932Salfred to_mah(ah)->av.ib.port_pd &= cpu_to_be32(0x7FFFFFFF); 1218255932Salfred spin_lock(&sqp->tx_lock); 1219255932Salfred if (sqp->tx_ix_head - sqp->tx_ix_tail >= 1220255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)) 1221255932Salfred ret = -EAGAIN; 1222255932Salfred else 1223255932Salfred wire_tx_ix = (++sqp->tx_ix_head) & (MLX4_NUM_TUNNEL_BUFS - 1); 1224255932Salfred spin_unlock(&sqp->tx_lock); 1225255932Salfred if (ret) 1226255932Salfred goto out; 1227255932Salfred 1228255932Salfred sqp_mad = (struct mlx4_mad_snd_buf *) (sqp->tx_ring[wire_tx_ix].buf.addr); 1229255932Salfred if (sqp->tx_ring[wire_tx_ix].ah) 1230255932Salfred ib_destroy_ah(sqp->tx_ring[wire_tx_ix].ah); 1231255932Salfred sqp->tx_ring[wire_tx_ix].ah = ah; 1232255932Salfred ib_dma_sync_single_for_cpu(&dev->ib_dev, 1233255932Salfred sqp->tx_ring[wire_tx_ix].buf.map, 1234255932Salfred sizeof (struct mlx4_mad_snd_buf), 1235255932Salfred DMA_TO_DEVICE); 1236255932Salfred 1237255932Salfred memcpy(&sqp_mad->payload, mad, sizeof *mad); 1238255932Salfred 1239255932Salfred ib_dma_sync_single_for_device(&dev->ib_dev, 1240255932Salfred sqp->tx_ring[wire_tx_ix].buf.map, 1241255932Salfred sizeof (struct mlx4_mad_snd_buf), 1242255932Salfred DMA_TO_DEVICE); 1243255932Salfred 1244255932Salfred list.addr = sqp->tx_ring[wire_tx_ix].buf.map; 1245255932Salfred list.length = sizeof (struct mlx4_mad_snd_buf); 1246255932Salfred list.lkey = sqp_ctx->mr->lkey; 1247255932Salfred 1248255932Salfred wr.wr.ud.ah = ah; 1249255932Salfred wr.wr.ud.port_num = port; 1250255932Salfred wr.wr.ud.pkey_index = wire_pkey_ix; 1251255932Salfred wr.wr.ud.remote_qkey = qkey; 1252255932Salfred wr.wr.ud.remote_qpn = remote_qpn; 1253255932Salfred wr.next = NULL; 1254255932Salfred wr.wr_id = ((u64) wire_tx_ix) | MLX4_TUN_SET_WRID_QPN(src_qpnum); 1255255932Salfred wr.sg_list = &list; 1256255932Salfred wr.num_sge = 1; 1257255932Salfred wr.opcode = IB_WR_SEND; 1258255932Salfred wr.send_flags = IB_SEND_SIGNALED; 1259278886Shselasky if (s_mac) 1260278886Shselasky memcpy(to_mah(ah)->av.eth.s_mac, s_mac, 6); 1261255932Salfred 1262278886Shselasky 1263255932Salfred ret = ib_post_send(send_qp, &wr, &bad_wr); 1264255932Salfredout: 1265255932Salfred if (ret) 1266255932Salfred ib_destroy_ah(ah); 1267255932Salfred return ret; 1268255932Salfred} 1269255932Salfred 1270255932Salfredstatic int get_slave_base_gid_ix(struct mlx4_ib_dev *dev, int slave, int port) 1271255932Salfred{ 1272255932Salfred int gids; 1273255932Salfred int vfs; 1274255932Salfred 1275255932Salfred if (rdma_port_get_link_layer(&dev->ib_dev, port) == IB_LINK_LAYER_INFINIBAND) 1276255932Salfred return slave; 1277255932Salfred 1278255932Salfred gids = MLX4_ROCE_MAX_GIDS - MLX4_ROCE_PF_GIDS; 1279329159Shselasky vfs = dev->dev->persist->num_vfs; 1280255932Salfred 1281255932Salfred if (slave == 0) 1282255932Salfred return 0; 1283255932Salfred if (slave <= gids % vfs) 1284255932Salfred return MLX4_ROCE_PF_GIDS + ((gids / vfs) + 1) * (slave - 1); 1285255932Salfred 1286255932Salfred return MLX4_ROCE_PF_GIDS + (gids % vfs) + ((gids / vfs) * (slave - 1)); 1287255932Salfred} 1288255932Salfred 1289255932Salfredstatic int get_real_sgid_index(struct mlx4_ib_dev *dev, int slave, int port, 1290255932Salfred struct ib_ah_attr *ah_attr) 1291255932Salfred{ 1292255932Salfred if (rdma_port_get_link_layer(&dev->ib_dev, port) == IB_LINK_LAYER_INFINIBAND) { 1293255932Salfred ah_attr->grh.sgid_index = slave; 1294255932Salfred return 0; 1295255932Salfred } 1296255932Salfred ah_attr->grh.sgid_index += get_slave_base_gid_ix(dev, slave, port); 1297255932Salfred return 0; 1298255932Salfred} 1299255932Salfred 1300255932Salfredstatic void mlx4_ib_multiplex_mad(struct mlx4_ib_demux_pv_ctx *ctx, struct ib_wc *wc) 1301255932Salfred{ 1302255932Salfred struct mlx4_ib_dev *dev = to_mdev(ctx->ib_dev); 1303255932Salfred struct mlx4_ib_demux_pv_qp *tun_qp = &ctx->qp[MLX4_TUN_WRID_QPN(wc->wr_id)]; 1304255932Salfred int wr_ix = wc->wr_id & (MLX4_NUM_TUNNEL_BUFS - 1); 1305255932Salfred struct mlx4_tunnel_mad *tunnel = tun_qp->ring[wr_ix].addr; 1306255932Salfred struct mlx4_ib_ah ah; 1307255932Salfred struct ib_ah_attr ah_attr; 1308255932Salfred u8 *slave_id; 1309255932Salfred int slave; 1310255932Salfred 1311255932Salfred /* Get slave that sent this packet */ 1312255932Salfred if (wc->src_qp < dev->dev->phys_caps.base_proxy_sqpn || 1313255932Salfred wc->src_qp >= dev->dev->phys_caps.base_proxy_sqpn + 8 * MLX4_MFUNC_MAX || 1314255932Salfred (wc->src_qp & 0x1) != ctx->port - 1 || 1315255932Salfred wc->src_qp & 0x4) { 1316255932Salfred mlx4_ib_warn(ctx->ib_dev, "can't multiplex bad sqp:%d\n", wc->src_qp); 1317255932Salfred return; 1318255932Salfred } 1319255932Salfred slave = ((wc->src_qp & ~0x7) - dev->dev->phys_caps.base_proxy_sqpn) / 8; 1320255932Salfred if (slave != ctx->slave) { 1321255932Salfred mlx4_ib_warn(ctx->ib_dev, "can't multiplex bad sqp:%d: " 1322255932Salfred "belongs to another slave\n", wc->src_qp); 1323255932Salfred return; 1324255932Salfred } 1325255932Salfred if (slave != mlx4_master_func_num(dev->dev) && !(wc->src_qp & 0x2)) { 1326255932Salfred mlx4_ib_warn(ctx->ib_dev, "can't multiplex bad sqp:%d: " 1327255932Salfred "non-master trying to send QP0 packets\n", wc->src_qp); 1328255932Salfred return; 1329255932Salfred } 1330255932Salfred 1331255932Salfred /* Map transaction ID */ 1332255932Salfred ib_dma_sync_single_for_cpu(ctx->ib_dev, tun_qp->ring[wr_ix].map, 1333255932Salfred sizeof (struct mlx4_tunnel_mad), 1334255932Salfred DMA_FROM_DEVICE); 1335255932Salfred switch (tunnel->mad.mad_hdr.method) { 1336255932Salfred case IB_MGMT_METHOD_SET: 1337255932Salfred case IB_MGMT_METHOD_GET: 1338255932Salfred case IB_MGMT_METHOD_REPORT: 1339255932Salfred case IB_SA_METHOD_GET_TABLE: 1340255932Salfred case IB_SA_METHOD_DELETE: 1341255932Salfred case IB_SA_METHOD_GET_MULTI: 1342255932Salfred case IB_SA_METHOD_GET_TRACE_TBL: 1343255932Salfred slave_id = (u8 *) &tunnel->mad.mad_hdr.tid; 1344255932Salfred if (*slave_id) { 1345255932Salfred mlx4_ib_warn(ctx->ib_dev, "egress mad has non-null tid msb:%d " 1346255932Salfred "class:%d slave:%d\n", *slave_id, 1347255932Salfred tunnel->mad.mad_hdr.mgmt_class, slave); 1348255932Salfred return; 1349255932Salfred } else 1350255932Salfred *slave_id = slave; 1351255932Salfred default: 1352255932Salfred /* nothing */; 1353255932Salfred } 1354255932Salfred 1355255932Salfred /* Class-specific handling */ 1356255932Salfred switch (tunnel->mad.mad_hdr.mgmt_class) { 1357255932Salfred case IB_MGMT_CLASS_SUBN_ADM: 1358255932Salfred if (mlx4_ib_multiplex_sa_handler(ctx->ib_dev, ctx->port, slave, 1359255932Salfred (struct ib_sa_mad *) &tunnel->mad)) 1360255932Salfred return; 1361255932Salfred break; 1362255932Salfred case IB_MGMT_CLASS_CM: 1363255932Salfred if (mlx4_ib_multiplex_cm_handler(ctx->ib_dev, ctx->port, slave, 1364255932Salfred (struct ib_mad *) &tunnel->mad)) 1365255932Salfred return; 1366255932Salfred break; 1367255932Salfred case IB_MGMT_CLASS_DEVICE_MGMT: 1368255932Salfred if (tunnel->mad.mad_hdr.method != IB_MGMT_METHOD_GET && 1369255932Salfred tunnel->mad.mad_hdr.method != IB_MGMT_METHOD_SET) 1370255932Salfred return; 1371255932Salfred break; 1372255932Salfred default: 1373255932Salfred /* Drop unsupported classes for slaves in tunnel mode */ 1374255932Salfred if (slave != mlx4_master_func_num(dev->dev)) { 1375255932Salfred mlx4_ib_warn(ctx->ib_dev, "dropping unsupported egress mad from class:%d " 1376255932Salfred "for slave:%d\n", tunnel->mad.mad_hdr.mgmt_class, slave); 1377255932Salfred return; 1378255932Salfred } 1379255932Salfred } 1380255932Salfred 1381255932Salfred /* We are using standard ib_core services to send the mad, so generate a 1382255932Salfred * stadard address handle by decoding the tunnelled mlx4_ah fields */ 1383255932Salfred memcpy(&ah.av, &tunnel->hdr.av, sizeof (struct mlx4_av)); 1384255932Salfred ah.ibah.device = ctx->ib_dev; 1385255932Salfred mlx4_ib_query_ah(&ah.ibah, &ah_attr); 1386255932Salfred if (ah_attr.ah_flags & IB_AH_GRH) 1387255932Salfred if (get_real_sgid_index(dev, slave, ctx->port, &ah_attr)) 1388255932Salfred return; 1389278886Shselasky memcpy(ah_attr.dmac, tunnel->hdr.mac, 6); 1390278886Shselasky ah_attr.vlan_id = tunnel->hdr.vlan; 1391278886Shselasky /* if slave have default vlan use it */ 1392278886Shselasky mlx4_get_slave_default_vlan(dev->dev, ctx->port, slave, 1393278886Shselasky &ah_attr.vlan_id, &ah_attr.sl); 1394255932Salfred 1395255932Salfred mlx4_ib_send_to_wire(dev, slave, ctx->port, 1396255932Salfred is_proxy_qp0(dev, wc->src_qp, slave) ? 1397255932Salfred IB_QPT_SMI : IB_QPT_GSI, 1398255932Salfred be16_to_cpu(tunnel->hdr.pkey_index), 1399255932Salfred be32_to_cpu(tunnel->hdr.remote_qpn), 1400255932Salfred be32_to_cpu(tunnel->hdr.qkey), 1401278886Shselasky &ah_attr, wc->smac, &tunnel->mad); 1402255932Salfred} 1403255932Salfred 1404255932Salfredstatic int mlx4_ib_alloc_pv_bufs(struct mlx4_ib_demux_pv_ctx *ctx, 1405255932Salfred enum ib_qp_type qp_type, int is_tun) 1406255932Salfred{ 1407255932Salfred int i; 1408255932Salfred struct mlx4_ib_demux_pv_qp *tun_qp; 1409255932Salfred int rx_buf_size, tx_buf_size; 1410255932Salfred 1411255932Salfred if (qp_type > IB_QPT_GSI) 1412255932Salfred return -EINVAL; 1413255932Salfred 1414255932Salfred tun_qp = &ctx->qp[qp_type]; 1415255932Salfred 1416255932Salfred tun_qp->ring = kzalloc(sizeof (struct mlx4_ib_buf) * MLX4_NUM_TUNNEL_BUFS, 1417255932Salfred GFP_KERNEL); 1418255932Salfred if (!tun_qp->ring) 1419255932Salfred return -ENOMEM; 1420255932Salfred 1421255932Salfred tun_qp->tx_ring = kcalloc(MLX4_NUM_TUNNEL_BUFS, 1422255932Salfred sizeof (struct mlx4_ib_tun_tx_buf), 1423255932Salfred GFP_KERNEL); 1424255932Salfred if (!tun_qp->tx_ring) { 1425255932Salfred kfree(tun_qp->ring); 1426255932Salfred tun_qp->ring = NULL; 1427255932Salfred return -ENOMEM; 1428255932Salfred } 1429255932Salfred 1430255932Salfred if (is_tun) { 1431255932Salfred rx_buf_size = sizeof (struct mlx4_tunnel_mad); 1432255932Salfred tx_buf_size = sizeof (struct mlx4_rcv_tunnel_mad); 1433255932Salfred } else { 1434255932Salfred rx_buf_size = sizeof (struct mlx4_mad_rcv_buf); 1435255932Salfred tx_buf_size = sizeof (struct mlx4_mad_snd_buf); 1436255932Salfred } 1437255932Salfred 1438255932Salfred for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { 1439255932Salfred tun_qp->ring[i].addr = kmalloc(rx_buf_size, GFP_KERNEL); 1440255932Salfred if (!tun_qp->ring[i].addr) 1441255932Salfred goto err; 1442255932Salfred tun_qp->ring[i].map = ib_dma_map_single(ctx->ib_dev, 1443255932Salfred tun_qp->ring[i].addr, 1444255932Salfred rx_buf_size, 1445255932Salfred DMA_FROM_DEVICE); 1446278886Shselasky if (unlikely(ib_dma_mapping_error(ctx->ib_dev, 1447278886Shselasky tun_qp->ring[i].map))) { 1448278886Shselasky mlx4_ib_warn(ctx->ib_dev, "ib_dma_map_single failed\n"); 1449278886Shselasky kfree(tun_qp->ring[i].addr); 1450278886Shselasky goto err; 1451278886Shselasky } 1452255932Salfred } 1453255932Salfred 1454255932Salfred for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { 1455255932Salfred tun_qp->tx_ring[i].buf.addr = 1456255932Salfred kmalloc(tx_buf_size, GFP_KERNEL); 1457255932Salfred if (!tun_qp->tx_ring[i].buf.addr) 1458255932Salfred goto tx_err; 1459255932Salfred tun_qp->tx_ring[i].buf.map = 1460255932Salfred ib_dma_map_single(ctx->ib_dev, 1461255932Salfred tun_qp->tx_ring[i].buf.addr, 1462255932Salfred tx_buf_size, 1463255932Salfred DMA_TO_DEVICE); 1464278886Shselasky if (unlikely(ib_dma_mapping_error(ctx->ib_dev, 1465278886Shselasky tun_qp->tx_ring[i].buf.map))) { 1466278886Shselasky mlx4_ib_warn(ctx->ib_dev, "ib_dma_map_single failed\n"); 1467278886Shselasky kfree(tun_qp->tx_ring[i].buf.addr); 1468278886Shselasky goto tx_err; 1469278886Shselasky } 1470255932Salfred tun_qp->tx_ring[i].ah = NULL; 1471255932Salfred } 1472255932Salfred spin_lock_init(&tun_qp->tx_lock); 1473255932Salfred tun_qp->tx_ix_head = 0; 1474255932Salfred tun_qp->tx_ix_tail = 0; 1475255932Salfred tun_qp->proxy_qpt = qp_type; 1476255932Salfred 1477255932Salfred return 0; 1478255932Salfred 1479255932Salfredtx_err: 1480255932Salfred while (i > 0) { 1481255932Salfred --i; 1482255932Salfred ib_dma_unmap_single(ctx->ib_dev, tun_qp->tx_ring[i].buf.map, 1483255932Salfred tx_buf_size, DMA_TO_DEVICE); 1484255932Salfred kfree(tun_qp->tx_ring[i].buf.addr); 1485255932Salfred } 1486255932Salfred kfree(tun_qp->tx_ring); 1487255932Salfred tun_qp->tx_ring = NULL; 1488255932Salfred i = MLX4_NUM_TUNNEL_BUFS; 1489255932Salfrederr: 1490255932Salfred while (i > 0) { 1491255932Salfred --i; 1492255932Salfred ib_dma_unmap_single(ctx->ib_dev, tun_qp->ring[i].map, 1493255932Salfred rx_buf_size, DMA_FROM_DEVICE); 1494255932Salfred kfree(tun_qp->ring[i].addr); 1495255932Salfred } 1496255932Salfred kfree(tun_qp->ring); 1497255932Salfred tun_qp->ring = NULL; 1498255932Salfred return -ENOMEM; 1499255932Salfred} 1500255932Salfred 1501255932Salfredstatic void mlx4_ib_free_pv_qp_bufs(struct mlx4_ib_demux_pv_ctx *ctx, 1502255932Salfred enum ib_qp_type qp_type, int is_tun) 1503255932Salfred{ 1504255932Salfred int i; 1505255932Salfred struct mlx4_ib_demux_pv_qp *tun_qp; 1506255932Salfred int rx_buf_size, tx_buf_size; 1507255932Salfred 1508255932Salfred if (qp_type > IB_QPT_GSI) 1509255932Salfred return; 1510255932Salfred 1511255932Salfred tun_qp = &ctx->qp[qp_type]; 1512255932Salfred if (is_tun) { 1513255932Salfred rx_buf_size = sizeof (struct mlx4_tunnel_mad); 1514255932Salfred tx_buf_size = sizeof (struct mlx4_rcv_tunnel_mad); 1515255932Salfred } else { 1516255932Salfred rx_buf_size = sizeof (struct mlx4_mad_rcv_buf); 1517255932Salfred tx_buf_size = sizeof (struct mlx4_mad_snd_buf); 1518255932Salfred } 1519255932Salfred 1520255932Salfred 1521255932Salfred for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { 1522255932Salfred ib_dma_unmap_single(ctx->ib_dev, tun_qp->ring[i].map, 1523255932Salfred rx_buf_size, DMA_FROM_DEVICE); 1524255932Salfred kfree(tun_qp->ring[i].addr); 1525255932Salfred } 1526255932Salfred 1527255932Salfred for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { 1528255932Salfred ib_dma_unmap_single(ctx->ib_dev, tun_qp->tx_ring[i].buf.map, 1529255932Salfred tx_buf_size, DMA_TO_DEVICE); 1530255932Salfred kfree(tun_qp->tx_ring[i].buf.addr); 1531255932Salfred if (tun_qp->tx_ring[i].ah) 1532255932Salfred ib_destroy_ah(tun_qp->tx_ring[i].ah); 1533255932Salfred } 1534255932Salfred kfree(tun_qp->tx_ring); 1535255932Salfred kfree(tun_qp->ring); 1536255932Salfred} 1537255932Salfred 1538255932Salfredstatic void mlx4_ib_tunnel_comp_worker(struct work_struct *work) 1539255932Salfred{ 1540255932Salfred struct mlx4_ib_demux_pv_ctx *ctx; 1541255932Salfred struct mlx4_ib_demux_pv_qp *tun_qp; 1542255932Salfred struct ib_wc wc; 1543255932Salfred int ret; 1544255932Salfred ctx = container_of(work, struct mlx4_ib_demux_pv_ctx, work); 1545255932Salfred ib_req_notify_cq(ctx->cq, IB_CQ_NEXT_COMP); 1546255932Salfred 1547255932Salfred while (ib_poll_cq(ctx->cq, 1, &wc) == 1) { 1548255932Salfred tun_qp = &ctx->qp[MLX4_TUN_WRID_QPN(wc.wr_id)]; 1549255932Salfred if (wc.status == IB_WC_SUCCESS) { 1550255932Salfred switch (wc.opcode) { 1551255932Salfred case IB_WC_RECV: 1552255932Salfred mlx4_ib_multiplex_mad(ctx, &wc); 1553255932Salfred ret = mlx4_ib_post_pv_qp_buf(ctx, tun_qp, 1554255932Salfred wc.wr_id & 1555255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)); 1556255932Salfred if (ret) 1557255932Salfred pr_err("Failed reposting tunnel " 1558278886Shselasky "buf:%lld\n", (unsigned long long)wc.wr_id); 1559255932Salfred break; 1560255932Salfred case IB_WC_SEND: 1561255932Salfred pr_debug("received tunnel send completion:" 1562255932Salfred "wrid=0x%llx, status=0x%x\n", 1563278886Shselasky (unsigned long long)wc.wr_id, wc.status); 1564255932Salfred ib_destroy_ah(tun_qp->tx_ring[wc.wr_id & 1565255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)].ah); 1566255932Salfred tun_qp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah 1567255932Salfred = NULL; 1568255932Salfred spin_lock(&tun_qp->tx_lock); 1569255932Salfred tun_qp->tx_ix_tail++; 1570255932Salfred spin_unlock(&tun_qp->tx_lock); 1571255932Salfred 1572255932Salfred break; 1573255932Salfred default: 1574255932Salfred break; 1575255932Salfred } 1576255932Salfred } else { 1577255932Salfred pr_debug("mlx4_ib: completion error in tunnel: %d." 1578255932Salfred " status = %d, wrid = 0x%llx\n", 1579278886Shselasky ctx->slave, wc.status, (unsigned long long)wc.wr_id); 1580255932Salfred if (!MLX4_TUN_IS_RECV(wc.wr_id)) { 1581255932Salfred ib_destroy_ah(tun_qp->tx_ring[wc.wr_id & 1582255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)].ah); 1583255932Salfred tun_qp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah 1584255932Salfred = NULL; 1585255932Salfred spin_lock(&tun_qp->tx_lock); 1586255932Salfred tun_qp->tx_ix_tail++; 1587255932Salfred spin_unlock(&tun_qp->tx_lock); 1588255932Salfred } 1589255932Salfred } 1590255932Salfred } 1591255932Salfred} 1592255932Salfred 1593255932Salfredstatic void pv_qp_event_handler(struct ib_event *event, void *qp_context) 1594255932Salfred{ 1595255932Salfred struct mlx4_ib_demux_pv_ctx *sqp = qp_context; 1596255932Salfred 1597255932Salfred /* It's worse than that! He's dead, Jim! */ 1598255932Salfred pr_err("Fatal error (%d) on a MAD QP on port %d\n", 1599255932Salfred event->event, sqp->port); 1600255932Salfred} 1601255932Salfred 1602255932Salfredstatic int create_pv_sqp(struct mlx4_ib_demux_pv_ctx *ctx, 1603255932Salfred enum ib_qp_type qp_type, int create_tun) 1604255932Salfred{ 1605255932Salfred int i, ret; 1606255932Salfred struct mlx4_ib_demux_pv_qp *tun_qp; 1607255932Salfred struct mlx4_ib_qp_tunnel_init_attr qp_init_attr; 1608255932Salfred struct ib_qp_attr attr; 1609255932Salfred int qp_attr_mask_INIT; 1610255932Salfred 1611255932Salfred if (qp_type > IB_QPT_GSI) 1612255932Salfred return -EINVAL; 1613255932Salfred 1614255932Salfred tun_qp = &ctx->qp[qp_type]; 1615255932Salfred 1616255932Salfred memset(&qp_init_attr, 0, sizeof qp_init_attr); 1617255932Salfred qp_init_attr.init_attr.send_cq = ctx->cq; 1618255932Salfred qp_init_attr.init_attr.recv_cq = ctx->cq; 1619255932Salfred qp_init_attr.init_attr.sq_sig_type = IB_SIGNAL_ALL_WR; 1620255932Salfred qp_init_attr.init_attr.cap.max_send_wr = MLX4_NUM_TUNNEL_BUFS; 1621255932Salfred qp_init_attr.init_attr.cap.max_recv_wr = MLX4_NUM_TUNNEL_BUFS; 1622255932Salfred qp_init_attr.init_attr.cap.max_send_sge = 1; 1623255932Salfred qp_init_attr.init_attr.cap.max_recv_sge = 1; 1624255932Salfred if (create_tun) { 1625255932Salfred qp_init_attr.init_attr.qp_type = IB_QPT_UD; 1626255932Salfred qp_init_attr.init_attr.create_flags = (enum ib_qp_create_flags)MLX4_IB_SRIOV_TUNNEL_QP; 1627255932Salfred qp_init_attr.port = ctx->port; 1628255932Salfred qp_init_attr.slave = ctx->slave; 1629255932Salfred qp_init_attr.proxy_qp_type = qp_type; 1630255932Salfred qp_attr_mask_INIT = IB_QP_STATE | IB_QP_PKEY_INDEX | 1631255932Salfred IB_QP_QKEY | IB_QP_PORT; 1632255932Salfred } else { 1633255932Salfred qp_init_attr.init_attr.qp_type = qp_type; 1634255932Salfred qp_init_attr.init_attr.create_flags = (enum ib_qp_create_flags)MLX4_IB_SRIOV_SQP; 1635255932Salfred qp_attr_mask_INIT = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_QKEY; 1636255932Salfred } 1637255932Salfred qp_init_attr.init_attr.port_num = ctx->port; 1638255932Salfred qp_init_attr.init_attr.qp_context = ctx; 1639255932Salfred qp_init_attr.init_attr.event_handler = pv_qp_event_handler; 1640255932Salfred tun_qp->qp = ib_create_qp(ctx->pd, &qp_init_attr.init_attr); 1641255932Salfred if (IS_ERR(tun_qp->qp)) { 1642255932Salfred ret = PTR_ERR(tun_qp->qp); 1643255932Salfred tun_qp->qp = NULL; 1644255932Salfred pr_err("Couldn't create %s QP (%d)\n", 1645255932Salfred create_tun ? "tunnel" : "special", ret); 1646255932Salfred return ret; 1647255932Salfred } 1648255932Salfred 1649255932Salfred memset(&attr, 0, sizeof attr); 1650255932Salfred attr.qp_state = IB_QPS_INIT; 1651278886Shselasky ret = 0; 1652278886Shselasky if (create_tun) 1653278886Shselasky ret = find_slave_port_pkey_ix(to_mdev(ctx->ib_dev), ctx->slave, 1654278886Shselasky ctx->port, 0xFFFF, &attr.pkey_index); 1655278886Shselasky if (ret || !create_tun) 1656296382Shselasky attr.pkey_index = 1657296382Shselasky to_mdev(ctx->ib_dev)->pkeys.virt2phys_pkey[ctx->slave][ctx->port - 1][0]; 1658255932Salfred attr.qkey = IB_QP1_QKEY; 1659255932Salfred attr.port_num = ctx->port; 1660255932Salfred ret = ib_modify_qp(tun_qp->qp, &attr, qp_attr_mask_INIT); 1661255932Salfred if (ret) { 1662255932Salfred pr_err("Couldn't change %s qp state to INIT (%d)\n", 1663255932Salfred create_tun ? "tunnel" : "special", ret); 1664255932Salfred goto err_qp; 1665255932Salfred } 1666255932Salfred attr.qp_state = IB_QPS_RTR; 1667255932Salfred ret = ib_modify_qp(tun_qp->qp, &attr, IB_QP_STATE); 1668255932Salfred if (ret) { 1669255932Salfred pr_err("Couldn't change %s qp state to RTR (%d)\n", 1670255932Salfred create_tun ? "tunnel" : "special", ret); 1671255932Salfred goto err_qp; 1672255932Salfred } 1673255932Salfred attr.qp_state = IB_QPS_RTS; 1674255932Salfred attr.sq_psn = 0; 1675255932Salfred ret = ib_modify_qp(tun_qp->qp, &attr, IB_QP_STATE | IB_QP_SQ_PSN); 1676255932Salfred if (ret) { 1677255932Salfred pr_err("Couldn't change %s qp state to RTS (%d)\n", 1678255932Salfred create_tun ? "tunnel" : "special", ret); 1679255932Salfred goto err_qp; 1680255932Salfred } 1681255932Salfred 1682255932Salfred for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { 1683255932Salfred ret = mlx4_ib_post_pv_qp_buf(ctx, tun_qp, i); 1684255932Salfred if (ret) { 1685255932Salfred pr_err(" mlx4_ib_post_pv_buf error" 1686255932Salfred " (err = %d, i = %d)\n", ret, i); 1687255932Salfred goto err_qp; 1688255932Salfred } 1689255932Salfred } 1690255932Salfred return 0; 1691255932Salfred 1692255932Salfrederr_qp: 1693255932Salfred ib_destroy_qp(tun_qp->qp); 1694255932Salfred tun_qp->qp = NULL; 1695255932Salfred return ret; 1696255932Salfred} 1697255932Salfred 1698255932Salfred/* 1699255932Salfred * IB MAD completion callback for real SQPs 1700255932Salfred */ 1701255932Salfredstatic void mlx4_ib_sqp_comp_worker(struct work_struct *work) 1702255932Salfred{ 1703255932Salfred struct mlx4_ib_demux_pv_ctx *ctx; 1704255932Salfred struct mlx4_ib_demux_pv_qp *sqp; 1705255932Salfred struct ib_wc wc; 1706255932Salfred struct ib_grh *grh; 1707255932Salfred struct ib_mad *mad; 1708255932Salfred 1709255932Salfred ctx = container_of(work, struct mlx4_ib_demux_pv_ctx, work); 1710255932Salfred ib_req_notify_cq(ctx->cq, IB_CQ_NEXT_COMP); 1711255932Salfred 1712255932Salfred while (mlx4_ib_poll_cq(ctx->cq, 1, &wc) == 1) { 1713255932Salfred sqp = &ctx->qp[MLX4_TUN_WRID_QPN(wc.wr_id)]; 1714255932Salfred if (wc.status == IB_WC_SUCCESS) { 1715255932Salfred switch (wc.opcode) { 1716255932Salfred case IB_WC_SEND: 1717255932Salfred ib_destroy_ah(sqp->tx_ring[wc.wr_id & 1718255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)].ah); 1719255932Salfred sqp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah 1720255932Salfred = NULL; 1721255932Salfred spin_lock(&sqp->tx_lock); 1722255932Salfred sqp->tx_ix_tail++; 1723255932Salfred spin_unlock(&sqp->tx_lock); 1724255932Salfred break; 1725255932Salfred case IB_WC_RECV: 1726255932Salfred mad = (struct ib_mad *) &(((struct mlx4_mad_rcv_buf *) 1727255932Salfred (sqp->ring[wc.wr_id & 1728255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)].addr))->payload); 1729255932Salfred grh = &(((struct mlx4_mad_rcv_buf *) 1730255932Salfred (sqp->ring[wc.wr_id & 1731255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)].addr))->grh); 1732255932Salfred mlx4_ib_demux_mad(ctx->ib_dev, ctx->port, &wc, grh, mad); 1733255932Salfred if (mlx4_ib_post_pv_qp_buf(ctx, sqp, wc.wr_id & 1734255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1))) 1735255932Salfred pr_err("Failed reposting SQP " 1736278886Shselasky "buf:%lld\n", (unsigned long long)wc.wr_id); 1737255932Salfred break; 1738255932Salfred default: 1739255932Salfred BUG_ON(1); 1740255932Salfred break; 1741255932Salfred } 1742255932Salfred } else { 1743255932Salfred pr_debug("mlx4_ib: completion error in tunnel: %d." 1744255932Salfred " status = %d, wrid = 0x%llx\n", 1745278886Shselasky ctx->slave, wc.status, (unsigned long long)wc.wr_id); 1746255932Salfred if (!MLX4_TUN_IS_RECV(wc.wr_id)) { 1747255932Salfred ib_destroy_ah(sqp->tx_ring[wc.wr_id & 1748255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)].ah); 1749255932Salfred sqp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah 1750255932Salfred = NULL; 1751255932Salfred spin_lock(&sqp->tx_lock); 1752255932Salfred sqp->tx_ix_tail++; 1753255932Salfred spin_unlock(&sqp->tx_lock); 1754255932Salfred } 1755255932Salfred } 1756255932Salfred } 1757255932Salfred} 1758255932Salfred 1759255932Salfredstatic int alloc_pv_object(struct mlx4_ib_dev *dev, int slave, int port, 1760255932Salfred struct mlx4_ib_demux_pv_ctx **ret_ctx) 1761255932Salfred{ 1762255932Salfred struct mlx4_ib_demux_pv_ctx *ctx; 1763255932Salfred 1764255932Salfred *ret_ctx = NULL; 1765255932Salfred ctx = kzalloc(sizeof (struct mlx4_ib_demux_pv_ctx), GFP_KERNEL); 1766255932Salfred if (!ctx) { 1767255932Salfred pr_err("failed allocating pv resource context " 1768255932Salfred "for port %d, slave %d\n", port, slave); 1769255932Salfred return -ENOMEM; 1770255932Salfred } 1771255932Salfred 1772255932Salfred ctx->ib_dev = &dev->ib_dev; 1773255932Salfred ctx->port = port; 1774255932Salfred ctx->slave = slave; 1775255932Salfred *ret_ctx = ctx; 1776255932Salfred return 0; 1777255932Salfred} 1778255932Salfred 1779255932Salfredstatic void free_pv_object(struct mlx4_ib_dev *dev, int slave, int port) 1780255932Salfred{ 1781255932Salfred if (dev->sriov.demux[port - 1].tun[slave]) { 1782255932Salfred kfree(dev->sriov.demux[port - 1].tun[slave]); 1783255932Salfred dev->sriov.demux[port - 1].tun[slave] = NULL; 1784255932Salfred } 1785255932Salfred} 1786255932Salfred 1787255932Salfredstatic int create_pv_resources(struct ib_device *ibdev, int slave, int port, 1788255932Salfred int create_tun, struct mlx4_ib_demux_pv_ctx *ctx) 1789255932Salfred{ 1790255932Salfred int ret, cq_size; 1791255932Salfred 1792255932Salfred if (ctx->state != DEMUX_PV_STATE_DOWN) 1793255932Salfred return -EEXIST; 1794255932Salfred 1795255932Salfred ctx->state = DEMUX_PV_STATE_STARTING; 1796255932Salfred /* have QP0 only on port owner, and only if link layer is IB */ 1797255932Salfred if (ctx->slave == mlx4_master_func_num(to_mdev(ctx->ib_dev)->dev) && 1798255932Salfred rdma_port_get_link_layer(ibdev, ctx->port) == IB_LINK_LAYER_INFINIBAND) 1799255932Salfred ctx->has_smi = 1; 1800255932Salfred 1801255932Salfred if (ctx->has_smi) { 1802255932Salfred ret = mlx4_ib_alloc_pv_bufs(ctx, IB_QPT_SMI, create_tun); 1803255932Salfred if (ret) { 1804255932Salfred pr_err("Failed allocating qp0 tunnel bufs (%d)\n", ret); 1805255932Salfred goto err_out; 1806255932Salfred } 1807255932Salfred } 1808255932Salfred 1809255932Salfred ret = mlx4_ib_alloc_pv_bufs(ctx, IB_QPT_GSI, create_tun); 1810255932Salfred if (ret) { 1811255932Salfred pr_err("Failed allocating qp1 tunnel bufs (%d)\n", ret); 1812255932Salfred goto err_out_qp0; 1813255932Salfred } 1814255932Salfred 1815255932Salfred cq_size = 2 * MLX4_NUM_TUNNEL_BUFS; 1816255932Salfred if (ctx->has_smi) 1817255932Salfred cq_size *= 2; 1818255932Salfred 1819255932Salfred ctx->cq = ib_create_cq(ctx->ib_dev, mlx4_ib_tunnel_comp_handler, 1820255932Salfred NULL, ctx, cq_size, 0); 1821255932Salfred if (IS_ERR(ctx->cq)) { 1822255932Salfred ret = PTR_ERR(ctx->cq); 1823255932Salfred pr_err("Couldn't create tunnel CQ (%d)\n", ret); 1824255932Salfred goto err_buf; 1825255932Salfred } 1826255932Salfred 1827255932Salfred ctx->pd = ib_alloc_pd(ctx->ib_dev); 1828255932Salfred if (IS_ERR(ctx->pd)) { 1829255932Salfred ret = PTR_ERR(ctx->pd); 1830255932Salfred pr_err("Couldn't create tunnel PD (%d)\n", ret); 1831255932Salfred goto err_cq; 1832255932Salfred } 1833255932Salfred 1834255932Salfred ctx->mr = ib_get_dma_mr(ctx->pd, IB_ACCESS_LOCAL_WRITE); 1835255932Salfred if (IS_ERR(ctx->mr)) { 1836255932Salfred ret = PTR_ERR(ctx->mr); 1837255932Salfred pr_err("Couldn't get tunnel DMA MR (%d)\n", ret); 1838255932Salfred goto err_pd; 1839255932Salfred } 1840255932Salfred 1841255932Salfred if (ctx->has_smi) { 1842255932Salfred ret = create_pv_sqp(ctx, IB_QPT_SMI, create_tun); 1843255932Salfred if (ret) { 1844255932Salfred pr_err("Couldn't create %s QP0 (%d)\n", 1845255932Salfred create_tun ? "tunnel for" : "", ret); 1846255932Salfred goto err_mr; 1847255932Salfred } 1848255932Salfred } 1849255932Salfred 1850255932Salfred ret = create_pv_sqp(ctx, IB_QPT_GSI, create_tun); 1851255932Salfred if (ret) { 1852255932Salfred pr_err("Couldn't create %s QP1 (%d)\n", 1853255932Salfred create_tun ? "tunnel for" : "", ret); 1854255932Salfred goto err_qp0; 1855255932Salfred } 1856255932Salfred 1857255932Salfred if (create_tun) 1858255932Salfred INIT_WORK(&ctx->work, mlx4_ib_tunnel_comp_worker); 1859255932Salfred else 1860255932Salfred INIT_WORK(&ctx->work, mlx4_ib_sqp_comp_worker); 1861255932Salfred 1862255932Salfred ctx->wq = to_mdev(ibdev)->sriov.demux[port - 1].wq; 1863255932Salfred 1864255932Salfred ret = ib_req_notify_cq(ctx->cq, IB_CQ_NEXT_COMP); 1865255932Salfred if (ret) { 1866255932Salfred pr_err("Couldn't arm tunnel cq (%d)\n", ret); 1867255932Salfred goto err_wq; 1868255932Salfred } 1869255932Salfred ctx->state = DEMUX_PV_STATE_ACTIVE; 1870255932Salfred return 0; 1871255932Salfred 1872255932Salfrederr_wq: 1873255932Salfred ctx->wq = NULL; 1874255932Salfred ib_destroy_qp(ctx->qp[1].qp); 1875255932Salfred ctx->qp[1].qp = NULL; 1876255932Salfred 1877255932Salfred 1878255932Salfrederr_qp0: 1879255932Salfred if (ctx->has_smi) 1880255932Salfred ib_destroy_qp(ctx->qp[0].qp); 1881255932Salfred ctx->qp[0].qp = NULL; 1882255932Salfred 1883255932Salfrederr_mr: 1884255932Salfred ib_dereg_mr(ctx->mr); 1885255932Salfred ctx->mr = NULL; 1886255932Salfred 1887255932Salfrederr_pd: 1888255932Salfred ib_dealloc_pd(ctx->pd); 1889255932Salfred ctx->pd = NULL; 1890255932Salfred 1891255932Salfrederr_cq: 1892255932Salfred ib_destroy_cq(ctx->cq); 1893255932Salfred ctx->cq = NULL; 1894255932Salfred 1895255932Salfrederr_buf: 1896255932Salfred mlx4_ib_free_pv_qp_bufs(ctx, IB_QPT_GSI, create_tun); 1897255932Salfred 1898255932Salfrederr_out_qp0: 1899255932Salfred if (ctx->has_smi) 1900255932Salfred mlx4_ib_free_pv_qp_bufs(ctx, IB_QPT_SMI, create_tun); 1901255932Salfrederr_out: 1902255932Salfred ctx->state = DEMUX_PV_STATE_DOWN; 1903255932Salfred return ret; 1904255932Salfred} 1905255932Salfred 1906255932Salfredstatic void destroy_pv_resources(struct mlx4_ib_dev *dev, int slave, int port, 1907255932Salfred struct mlx4_ib_demux_pv_ctx *ctx, int flush) 1908255932Salfred{ 1909255932Salfred if (!ctx) 1910255932Salfred return; 1911255932Salfred if (ctx->state > DEMUX_PV_STATE_DOWN) { 1912255932Salfred ctx->state = DEMUX_PV_STATE_DOWNING; 1913255932Salfred if (flush) 1914255932Salfred flush_workqueue(ctx->wq); 1915255932Salfred if (ctx->has_smi) { 1916255932Salfred ib_destroy_qp(ctx->qp[0].qp); 1917255932Salfred ctx->qp[0].qp = NULL; 1918255932Salfred mlx4_ib_free_pv_qp_bufs(ctx, IB_QPT_SMI, 1); 1919255932Salfred } 1920255932Salfred ib_destroy_qp(ctx->qp[1].qp); 1921255932Salfred ctx->qp[1].qp = NULL; 1922255932Salfred mlx4_ib_free_pv_qp_bufs(ctx, IB_QPT_GSI, 1); 1923255932Salfred ib_dereg_mr(ctx->mr); 1924255932Salfred ctx->mr = NULL; 1925255932Salfred ib_dealloc_pd(ctx->pd); 1926255932Salfred ctx->pd = NULL; 1927255932Salfred ib_destroy_cq(ctx->cq); 1928255932Salfred ctx->cq = NULL; 1929255932Salfred ctx->state = DEMUX_PV_STATE_DOWN; 1930255932Salfred } 1931255932Salfred} 1932255932Salfred 1933255932Salfredstatic int mlx4_ib_tunnels_update(struct mlx4_ib_dev *dev, int slave, 1934255932Salfred int port, int do_init) 1935255932Salfred{ 1936255932Salfred int ret = 0; 1937255932Salfred 1938255932Salfred if (!do_init) { 1939255932Salfred clean_vf_mcast(&dev->sriov.demux[port - 1], slave); 1940255932Salfred /* for master, destroy real sqp resources */ 1941255932Salfred if (slave == mlx4_master_func_num(dev->dev)) 1942255932Salfred destroy_pv_resources(dev, slave, port, 1943255932Salfred dev->sriov.sqps[port - 1], 1); 1944255932Salfred /* destroy the tunnel qp resources */ 1945255932Salfred destroy_pv_resources(dev, slave, port, 1946255932Salfred dev->sriov.demux[port - 1].tun[slave], 1); 1947255932Salfred return 0; 1948255932Salfred } 1949255932Salfred 1950255932Salfred /* create the tunnel qp resources */ 1951255932Salfred ret = create_pv_resources(&dev->ib_dev, slave, port, 1, 1952255932Salfred dev->sriov.demux[port - 1].tun[slave]); 1953255932Salfred 1954255932Salfred /* for master, create the real sqp resources */ 1955255932Salfred if (!ret && slave == mlx4_master_func_num(dev->dev)) 1956255932Salfred ret = create_pv_resources(&dev->ib_dev, slave, port, 0, 1957255932Salfred dev->sriov.sqps[port - 1]); 1958255932Salfred return ret; 1959255932Salfred} 1960255932Salfred 1961255932Salfredvoid mlx4_ib_tunnels_update_work(struct work_struct *work) 1962255932Salfred{ 1963255932Salfred struct mlx4_ib_demux_work *dmxw; 1964255932Salfred 1965255932Salfred dmxw = container_of(work, struct mlx4_ib_demux_work, work); 1966255932Salfred mlx4_ib_tunnels_update(dmxw->dev, dmxw->slave, (int) dmxw->port, 1967255932Salfred dmxw->do_init); 1968255932Salfred kfree(dmxw); 1969255932Salfred return; 1970255932Salfred} 1971255932Salfred 1972255932Salfredstatic int mlx4_ib_alloc_demux_ctx(struct mlx4_ib_dev *dev, 1973255932Salfred struct mlx4_ib_demux_ctx *ctx, 1974255932Salfred int port) 1975255932Salfred{ 1976255932Salfred char name[12]; 1977255932Salfred int ret = 0; 1978255932Salfred int i; 1979255932Salfred 1980255932Salfred ctx->tun = kcalloc(dev->dev->caps.sqp_demux, 1981255932Salfred sizeof (struct mlx4_ib_demux_pv_ctx *), GFP_KERNEL); 1982255932Salfred if (!ctx->tun) 1983255932Salfred return -ENOMEM; 1984255932Salfred 1985255932Salfred ctx->dev = dev; 1986255932Salfred ctx->port = port; 1987255932Salfred ctx->ib_dev = &dev->ib_dev; 1988255932Salfred 1989255932Salfred for (i = 0; i < dev->dev->caps.sqp_demux; i++) { 1990255932Salfred ret = alloc_pv_object(dev, i, port, &ctx->tun[i]); 1991255932Salfred if (ret) { 1992255932Salfred ret = -ENOMEM; 1993255932Salfred goto err_mcg; 1994255932Salfred } 1995255932Salfred } 1996255932Salfred 1997255932Salfred ret = mlx4_ib_mcg_port_init(ctx); 1998255932Salfred if (ret) { 1999255932Salfred pr_err("Failed initializing mcg para-virt (%d)\n", ret); 2000255932Salfred goto err_mcg; 2001255932Salfred } 2002255932Salfred 2003255932Salfred snprintf(name, sizeof name, "mlx4_ibt%d", port); 2004255932Salfred ctx->wq = create_singlethread_workqueue(name); 2005255932Salfred if (!ctx->wq) { 2006255932Salfred pr_err("Failed to create tunnelling WQ for port %d\n", port); 2007255932Salfred ret = -ENOMEM; 2008255932Salfred goto err_wq; 2009255932Salfred } 2010255932Salfred 2011255932Salfred snprintf(name, sizeof name, "mlx4_ibud%d", port); 2012255932Salfred ctx->ud_wq = create_singlethread_workqueue(name); 2013255932Salfred if (!ctx->ud_wq) { 2014255932Salfred pr_err("Failed to create up/down WQ for port %d\n", port); 2015255932Salfred ret = -ENOMEM; 2016255932Salfred goto err_udwq; 2017255932Salfred } 2018255932Salfred 2019255932Salfred return 0; 2020255932Salfred 2021255932Salfrederr_udwq: 2022255932Salfred destroy_workqueue(ctx->wq); 2023255932Salfred ctx->wq = NULL; 2024255932Salfred 2025255932Salfrederr_wq: 2026255932Salfred mlx4_ib_mcg_port_cleanup(ctx, 1); 2027255932Salfrederr_mcg: 2028255932Salfred for (i = 0; i < dev->dev->caps.sqp_demux; i++) 2029255932Salfred free_pv_object(dev, i, port); 2030255932Salfred kfree(ctx->tun); 2031255932Salfred ctx->tun = NULL; 2032255932Salfred return ret; 2033255932Salfred} 2034255932Salfred 2035255932Salfredstatic void mlx4_ib_free_sqp_ctx(struct mlx4_ib_demux_pv_ctx *sqp_ctx) 2036255932Salfred{ 2037255932Salfred if (sqp_ctx->state > DEMUX_PV_STATE_DOWN) { 2038255932Salfred sqp_ctx->state = DEMUX_PV_STATE_DOWNING; 2039255932Salfred flush_workqueue(sqp_ctx->wq); 2040255932Salfred if (sqp_ctx->has_smi) { 2041255932Salfred ib_destroy_qp(sqp_ctx->qp[0].qp); 2042255932Salfred sqp_ctx->qp[0].qp = NULL; 2043255932Salfred mlx4_ib_free_pv_qp_bufs(sqp_ctx, IB_QPT_SMI, 0); 2044255932Salfred } 2045255932Salfred ib_destroy_qp(sqp_ctx->qp[1].qp); 2046255932Salfred sqp_ctx->qp[1].qp = NULL; 2047255932Salfred mlx4_ib_free_pv_qp_bufs(sqp_ctx, IB_QPT_GSI, 0); 2048255932Salfred ib_dereg_mr(sqp_ctx->mr); 2049255932Salfred sqp_ctx->mr = NULL; 2050255932Salfred ib_dealloc_pd(sqp_ctx->pd); 2051255932Salfred sqp_ctx->pd = NULL; 2052255932Salfred ib_destroy_cq(sqp_ctx->cq); 2053255932Salfred sqp_ctx->cq = NULL; 2054255932Salfred sqp_ctx->state = DEMUX_PV_STATE_DOWN; 2055255932Salfred } 2056255932Salfred} 2057255932Salfred 2058255932Salfredstatic void mlx4_ib_free_demux_ctx(struct mlx4_ib_demux_ctx *ctx) 2059255932Salfred{ 2060255932Salfred int i; 2061255932Salfred if (ctx) { 2062255932Salfred struct mlx4_ib_dev *dev = to_mdev(ctx->ib_dev); 2063255932Salfred mlx4_ib_mcg_port_cleanup(ctx, 1); 2064255932Salfred for (i = 0; i < dev->dev->caps.sqp_demux; i++) { 2065255932Salfred if (!ctx->tun[i]) 2066255932Salfred continue; 2067255932Salfred if (ctx->tun[i]->state > DEMUX_PV_STATE_DOWN) 2068255932Salfred ctx->tun[i]->state = DEMUX_PV_STATE_DOWNING; 2069255932Salfred } 2070255932Salfred flush_workqueue(ctx->wq); 2071255932Salfred for (i = 0; i < dev->dev->caps.sqp_demux; i++) { 2072255932Salfred destroy_pv_resources(dev, i, ctx->port, ctx->tun[i], 0); 2073255932Salfred free_pv_object(dev, i, ctx->port); 2074255932Salfred } 2075255932Salfred kfree(ctx->tun); 2076255932Salfred destroy_workqueue(ctx->ud_wq); 2077255932Salfred destroy_workqueue(ctx->wq); 2078255932Salfred } 2079255932Salfred} 2080255932Salfred 2081255932Salfredstatic void mlx4_ib_master_tunnels(struct mlx4_ib_dev *dev, int do_init) 2082255932Salfred{ 2083255932Salfred int i; 2084255932Salfred 2085255932Salfred if (!mlx4_is_master(dev->dev)) 2086255932Salfred return; 2087255932Salfred /* initialize or tear down tunnel QPs for the master */ 2088255932Salfred for (i = 0; i < dev->dev->caps.num_ports; i++) 2089255932Salfred mlx4_ib_tunnels_update(dev, mlx4_master_func_num(dev->dev), i + 1, do_init); 2090255932Salfred return; 2091255932Salfred} 2092255932Salfred 2093255932Salfredint mlx4_ib_init_sriov(struct mlx4_ib_dev *dev) 2094255932Salfred{ 2095255932Salfred int i = 0; 2096255932Salfred int err; 2097255932Salfred 2098255932Salfred if (!mlx4_is_mfunc(dev->dev)) 2099255932Salfred return 0; 2100255932Salfred 2101255932Salfred dev->sriov.is_going_down = 0; 2102255932Salfred spin_lock_init(&dev->sriov.going_down_lock); 2103255932Salfred mlx4_ib_cm_paravirt_init(dev); 2104255932Salfred 2105255932Salfred mlx4_ib_warn(&dev->ib_dev, "multi-function enabled\n"); 2106255932Salfred 2107255932Salfred if (mlx4_is_slave(dev->dev)) { 2108255932Salfred mlx4_ib_warn(&dev->ib_dev, "operating in qp1 tunnel mode\n"); 2109255932Salfred return 0; 2110255932Salfred } 2111255932Salfred 2112255932Salfred for (i = 0; i < dev->dev->caps.sqp_demux; i++) { 2113255932Salfred if (i == mlx4_master_func_num(dev->dev)) 2114255932Salfred mlx4_put_slave_node_guid(dev->dev, i, dev->ib_dev.node_guid); 2115255932Salfred else 2116255932Salfred mlx4_put_slave_node_guid(dev->dev, i, mlx4_ib_gen_node_guid()); 2117255932Salfred } 2118255932Salfred 2119255932Salfred err = mlx4_ib_init_alias_guid_service(dev); 2120255932Salfred if (err) { 2121255932Salfred mlx4_ib_warn(&dev->ib_dev, "Failed init alias guid process.\n"); 2122255932Salfred goto paravirt_err; 2123255932Salfred } 2124255932Salfred err = mlx4_ib_device_register_sysfs(dev); 2125255932Salfred if (err) { 2126255932Salfred mlx4_ib_warn(&dev->ib_dev, "Failed to register sysfs\n"); 2127255932Salfred goto sysfs_err; 2128255932Salfred } 2129255932Salfred 2130255932Salfred mlx4_ib_warn(&dev->ib_dev, "initializing demux service for %d qp1 clients\n", 2131255932Salfred dev->dev->caps.sqp_demux); 2132255932Salfred for (i = 0; i < dev->num_ports; i++) { 2133255932Salfred union ib_gid gid; 2134255932Salfred err = __mlx4_ib_query_gid(&dev->ib_dev, i + 1, 0, &gid, 1); 2135255932Salfred if (err) 2136255932Salfred goto demux_err; 2137255932Salfred dev->sriov.demux[i].guid_cache[0] = gid.global.interface_id; 2138255932Salfred err = alloc_pv_object(dev, mlx4_master_func_num(dev->dev), i + 1, 2139255932Salfred &dev->sriov.sqps[i]); 2140255932Salfred if (err) 2141255932Salfred goto demux_err; 2142255932Salfred err = mlx4_ib_alloc_demux_ctx(dev, &dev->sriov.demux[i], i + 1); 2143255932Salfred if (err) 2144255932Salfred goto demux_err; 2145255932Salfred } 2146255932Salfred mlx4_ib_master_tunnels(dev, 1); 2147255932Salfred return 0; 2148255932Salfred 2149255932Salfreddemux_err: 2150255932Salfred while (i > 0) { 2151255932Salfred free_pv_object(dev, mlx4_master_func_num(dev->dev), i + 1); 2152255932Salfred mlx4_ib_free_demux_ctx(&dev->sriov.demux[i]); 2153255932Salfred --i; 2154255932Salfred } 2155255932Salfred mlx4_ib_device_unregister_sysfs(dev); 2156255932Salfred 2157255932Salfredsysfs_err: 2158255932Salfred mlx4_ib_destroy_alias_guid_service(dev); 2159255932Salfred 2160255932Salfredparavirt_err: 2161255932Salfred mlx4_ib_cm_paravirt_clean(dev, -1); 2162255932Salfred 2163255932Salfred return err; 2164255932Salfred} 2165255932Salfred 2166255932Salfredvoid mlx4_ib_close_sriov(struct mlx4_ib_dev *dev) 2167255932Salfred{ 2168255932Salfred int i; 2169255932Salfred unsigned long flags; 2170255932Salfred 2171255932Salfred if (!mlx4_is_mfunc(dev->dev)) 2172255932Salfred return; 2173255932Salfred 2174255932Salfred spin_lock_irqsave(&dev->sriov.going_down_lock, flags); 2175255932Salfred dev->sriov.is_going_down = 1; 2176255932Salfred spin_unlock_irqrestore(&dev->sriov.going_down_lock, flags); 2177255932Salfred if (mlx4_is_master(dev->dev)) { 2178255932Salfred for (i = 0; i < dev->num_ports; i++) { 2179255932Salfred flush_workqueue(dev->sriov.demux[i].ud_wq); 2180255932Salfred mlx4_ib_free_sqp_ctx(dev->sriov.sqps[i]); 2181255932Salfred kfree(dev->sriov.sqps[i]); 2182255932Salfred dev->sriov.sqps[i] = NULL; 2183255932Salfred mlx4_ib_free_demux_ctx(&dev->sriov.demux[i]); 2184255932Salfred } 2185255932Salfred 2186255932Salfred mlx4_ib_cm_paravirt_clean(dev, -1); 2187255932Salfred mlx4_ib_destroy_alias_guid_service(dev); 2188255932Salfred mlx4_ib_device_unregister_sysfs(dev); 2189255932Salfred } 2190255932Salfred} 2191