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> 40331769Shselasky#include <dev/mlx4/driver.h> 41255932Salfred#include <linux/gfp.h> 42255932Salfred#include <rdma/ib_pma.h> 43219820Sjeff 44219820Sjeff#include "mlx4_ib.h" 45219820Sjeff 46219820Sjeffenum { 47219820Sjeff MLX4_IB_VENDOR_CLASS1 = 0x9, 48219820Sjeff MLX4_IB_VENDOR_CLASS2 = 0xa 49219820Sjeff}; 50219820Sjeff 51255932Salfred#define MLX4_TUN_SEND_WRID_SHIFT 34 52255932Salfred#define MLX4_TUN_QPN_SHIFT 32 53255932Salfred#define MLX4_TUN_WRID_RECV (((u64) 1) << MLX4_TUN_SEND_WRID_SHIFT) 54255932Salfred#define MLX4_TUN_SET_WRID_QPN(a) (((u64) ((a) & 0x3)) << MLX4_TUN_QPN_SHIFT) 55255932Salfred 56255932Salfred#define MLX4_TUN_IS_RECV(a) (((a) >> MLX4_TUN_SEND_WRID_SHIFT) & 0x1) 57255932Salfred#define MLX4_TUN_WRID_QPN(a) (((a) >> MLX4_TUN_QPN_SHIFT) & 0x3) 58255932Salfred 59255932Salfred /* Port mgmt change event handling */ 60255932Salfred 61255932Salfred#define GET_BLK_PTR_FROM_EQE(eqe) be32_to_cpu(eqe->event.port_mgmt_change.params.tbl_change_info.block_ptr) 62255932Salfred#define GET_MASK_FROM_EQE(eqe) be32_to_cpu(eqe->event.port_mgmt_change.params.tbl_change_info.tbl_entries_mask) 63255932Salfred#define NUM_IDX_IN_PKEY_TBL_BLK 32 64255932Salfred#define GUID_TBL_ENTRY_SIZE 8 /* size in bytes */ 65255932Salfred#define GUID_TBL_BLK_NUM_ENTRIES 8 66255932Salfred#define GUID_TBL_BLK_SIZE (GUID_TBL_ENTRY_SIZE * GUID_TBL_BLK_NUM_ENTRIES) 67255932Salfred 68255932Salfredstruct mlx4_mad_rcv_buf { 69255932Salfred struct ib_grh grh; 70255932Salfred u8 payload[256]; 71255932Salfred} __packed; 72255932Salfred 73255932Salfredstruct mlx4_mad_snd_buf { 74255932Salfred u8 payload[256]; 75255932Salfred} __packed; 76255932Salfred 77255932Salfredstruct mlx4_tunnel_mad { 78255932Salfred struct ib_grh grh; 79255932Salfred struct mlx4_ib_tunnel_header hdr; 80255932Salfred struct ib_mad mad; 81255932Salfred} __packed; 82255932Salfred 83255932Salfredstruct mlx4_rcv_tunnel_mad { 84255932Salfred struct mlx4_rcv_tunnel_hdr hdr; 85255932Salfred struct ib_grh grh; 86255932Salfred struct ib_mad mad; 87255932Salfred} __packed; 88255932Salfred 89255932Salfredstatic void handle_client_rereg_event(struct mlx4_ib_dev *dev, u8 port_num); 90255932Salfredstatic void handle_lid_change_event(struct mlx4_ib_dev *dev, u8 port_num); 91255932Salfredstatic void __propagate_pkey_ev(struct mlx4_ib_dev *dev, int port_num, 92255932Salfred int block, u32 change_bitmap); 93255932Salfred 94255932Salfred__be64 mlx4_ib_gen_node_guid(void) 95255932Salfred{ 96255932Salfred#define NODE_GUID_HI ((u64) (((u64)IB_OPENIB_OUI) << 40)) 97255932Salfred return cpu_to_be64(NODE_GUID_HI | random()); 98255932Salfred} 99255932Salfred 100255932Salfred__be64 mlx4_ib_get_new_demux_tid(struct mlx4_ib_demux_ctx *ctx) 101255932Salfred{ 102255932Salfred return cpu_to_be64(atomic_inc_return(&ctx->tid)) | 103255932Salfred cpu_to_be64(0xff00000000000000LL); 104255932Salfred} 105255932Salfred 106255932Salfredint mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int mad_ifc_flags, 107331769Shselasky int port, const struct ib_wc *in_wc, 108331769Shselasky const struct ib_grh *in_grh, 109331769Shselasky const void *in_mad, void *response_mad) 110219820Sjeff{ 111219820Sjeff struct mlx4_cmd_mailbox *inmailbox, *outmailbox; 112219820Sjeff void *inbox; 113219820Sjeff int err; 114219820Sjeff u32 in_modifier = port; 115219820Sjeff u8 op_modifier = 0; 116219820Sjeff 117219820Sjeff inmailbox = mlx4_alloc_cmd_mailbox(dev->dev); 118219820Sjeff if (IS_ERR(inmailbox)) 119219820Sjeff return PTR_ERR(inmailbox); 120219820Sjeff inbox = inmailbox->buf; 121219820Sjeff 122219820Sjeff outmailbox = mlx4_alloc_cmd_mailbox(dev->dev); 123219820Sjeff if (IS_ERR(outmailbox)) { 124219820Sjeff mlx4_free_cmd_mailbox(dev->dev, inmailbox); 125219820Sjeff return PTR_ERR(outmailbox); 126219820Sjeff } 127219820Sjeff 128219820Sjeff memcpy(inbox, in_mad, 256); 129219820Sjeff 130219820Sjeff /* 131219820Sjeff * Key check traps can't be generated unless we have in_wc to 132219820Sjeff * tell us where to send the trap. 133219820Sjeff */ 134255932Salfred if ((mad_ifc_flags & MLX4_MAD_IFC_IGNORE_MKEY) || !in_wc) 135219820Sjeff op_modifier |= 0x1; 136255932Salfred if ((mad_ifc_flags & MLX4_MAD_IFC_IGNORE_BKEY) || !in_wc) 137219820Sjeff op_modifier |= 0x2; 138255932Salfred if (mlx4_is_mfunc(dev->dev) && 139255932Salfred (mad_ifc_flags & MLX4_MAD_IFC_NET_VIEW || in_wc)) 140255932Salfred op_modifier |= 0x8; 141219820Sjeff 142219820Sjeff if (in_wc) { 143219820Sjeff struct { 144219820Sjeff __be32 my_qpn; 145219820Sjeff u32 reserved1; 146219820Sjeff __be32 rqpn; 147219820Sjeff u8 sl; 148219820Sjeff u8 g_path; 149219820Sjeff u16 reserved2[2]; 150219820Sjeff __be16 pkey; 151219820Sjeff u32 reserved3[11]; 152219820Sjeff u8 grh[40]; 153219820Sjeff } *ext_info; 154219820Sjeff 155219820Sjeff memset(inbox + 256, 0, 256); 156219820Sjeff ext_info = inbox + 256; 157219820Sjeff 158219820Sjeff ext_info->my_qpn = cpu_to_be32(in_wc->qp->qp_num); 159219820Sjeff ext_info->rqpn = cpu_to_be32(in_wc->src_qp); 160219820Sjeff ext_info->sl = in_wc->sl << 4; 161219820Sjeff ext_info->g_path = in_wc->dlid_path_bits | 162219820Sjeff (in_wc->wc_flags & IB_WC_GRH ? 0x80 : 0); 163219820Sjeff ext_info->pkey = cpu_to_be16(in_wc->pkey_index); 164219820Sjeff 165219820Sjeff if (in_grh) 166219820Sjeff memcpy(ext_info->grh, in_grh, 40); 167219820Sjeff 168219820Sjeff op_modifier |= 0x4; 169219820Sjeff 170219820Sjeff in_modifier |= in_wc->slid << 16; 171219820Sjeff } 172219820Sjeff 173255932Salfred err = mlx4_cmd_box(dev->dev, inmailbox->dma, outmailbox->dma, in_modifier, 174255932Salfred mlx4_is_master(dev->dev) ? (op_modifier & ~0x8) : op_modifier, 175255932Salfred MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C, 176255932Salfred (op_modifier & 0x8) ? MLX4_CMD_NATIVE : MLX4_CMD_WRAPPED); 177219820Sjeff 178219820Sjeff if (!err) 179219820Sjeff memcpy(response_mad, outmailbox->buf, 256); 180219820Sjeff 181219820Sjeff mlx4_free_cmd_mailbox(dev->dev, inmailbox); 182219820Sjeff mlx4_free_cmd_mailbox(dev->dev, outmailbox); 183219820Sjeff 184219820Sjeff return err; 185219820Sjeff} 186219820Sjeff 187219820Sjeffstatic void update_sm_ah(struct mlx4_ib_dev *dev, u8 port_num, u16 lid, u8 sl) 188219820Sjeff{ 189219820Sjeff struct ib_ah *new_ah; 190219820Sjeff struct ib_ah_attr ah_attr; 191255932Salfred unsigned long flags; 192219820Sjeff 193219820Sjeff if (!dev->send_agent[port_num - 1][0]) 194219820Sjeff return; 195219820Sjeff 196219820Sjeff memset(&ah_attr, 0, sizeof ah_attr); 197219820Sjeff ah_attr.dlid = lid; 198219820Sjeff ah_attr.sl = sl; 199219820Sjeff ah_attr.port_num = port_num; 200219820Sjeff 201219820Sjeff new_ah = ib_create_ah(dev->send_agent[port_num - 1][0]->qp->pd, 202219820Sjeff &ah_attr); 203219820Sjeff if (IS_ERR(new_ah)) 204219820Sjeff return; 205219820Sjeff 206255932Salfred spin_lock_irqsave(&dev->sm_lock, flags); 207219820Sjeff if (dev->sm_ah[port_num - 1]) 208219820Sjeff ib_destroy_ah(dev->sm_ah[port_num - 1]); 209219820Sjeff dev->sm_ah[port_num - 1] = new_ah; 210255932Salfred spin_unlock_irqrestore(&dev->sm_lock, flags); 211219820Sjeff} 212219820Sjeff 213219820Sjeff/* 214255932Salfred * Snoop SM MADs for port info, GUID info, and P_Key table sets, so we can 215255932Salfred * synthesize LID change, Client-Rereg, GID change, and P_Key change events. 216219820Sjeff */ 217331769Shselaskystatic void smp_snoop(struct ib_device *ibdev, u8 port_num, const struct ib_mad *mad, 218255932Salfred u16 prev_lid) 219219820Sjeff{ 220255932Salfred struct ib_port_info *pinfo; 221255932Salfred u16 lid; 222255932Salfred __be16 *base; 223255932Salfred u32 bn, pkey_change_bitmap; 224255932Salfred int i; 225219820Sjeff 226255932Salfred 227255932Salfred struct mlx4_ib_dev *dev = to_mdev(ibdev); 228219820Sjeff if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || 229219820Sjeff mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) && 230255932Salfred mad->mad_hdr.method == IB_MGMT_METHOD_SET) 231255932Salfred switch (mad->mad_hdr.attr_id) { 232255932Salfred case IB_SMP_ATTR_PORT_INFO: 233331769Shselasky if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_PORT_MNG_CHG_EV) 234331769Shselasky return; 235255932Salfred pinfo = (struct ib_port_info *) ((struct ib_smp *) mad)->data; 236255932Salfred lid = be16_to_cpu(pinfo->lid); 237219820Sjeff 238255932Salfred update_sm_ah(dev, port_num, 239219820Sjeff be16_to_cpu(pinfo->sm_lid), 240219820Sjeff pinfo->neighbormtu_mastersmsl & 0xf); 241219820Sjeff 242255932Salfred if (pinfo->clientrereg_resv_subnetto & 0x80) 243255932Salfred handle_client_rereg_event(dev, port_num); 244219820Sjeff 245255932Salfred if (prev_lid != lid) 246255932Salfred handle_lid_change_event(dev, port_num); 247255932Salfred break; 248255932Salfred 249255932Salfred case IB_SMP_ATTR_PKEY_TABLE: 250331769Shselasky if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_PORT_MNG_CHG_EV) 251331769Shselasky return; 252255932Salfred if (!mlx4_is_mfunc(dev->dev)) { 253255932Salfred mlx4_ib_dispatch_event(dev, port_num, 254255932Salfred IB_EVENT_PKEY_CHANGE); 255255932Salfred break; 256219820Sjeff } 257219820Sjeff 258255932Salfred /* at this point, we are running in the master. 259255932Salfred * Slaves do not receive SMPs. 260255932Salfred */ 261255932Salfred bn = be32_to_cpu(((struct ib_smp *)mad)->attr_mod) & 0xFFFF; 262255932Salfred base = (__be16 *) &(((struct ib_smp *)mad)->data[0]); 263255932Salfred pkey_change_bitmap = 0; 264255932Salfred for (i = 0; i < 32; i++) { 265255932Salfred pr_debug("PKEY[%d] = x%x\n", 266255932Salfred i + bn*32, be16_to_cpu(base[i])); 267255932Salfred if (be16_to_cpu(base[i]) != 268255932Salfred dev->pkeys.phys_pkey_cache[port_num - 1][i + bn*32]) { 269255932Salfred pkey_change_bitmap |= (1 << i); 270255932Salfred dev->pkeys.phys_pkey_cache[port_num - 1][i + bn*32] = 271255932Salfred be16_to_cpu(base[i]); 272255932Salfred } 273219820Sjeff } 274255932Salfred pr_debug("PKEY Change event: port=%d, " 275255932Salfred "block=0x%x, change_bitmap=0x%x\n", 276255932Salfred port_num, bn, pkey_change_bitmap); 277255932Salfred 278255932Salfred if (pkey_change_bitmap) { 279255932Salfred mlx4_ib_dispatch_event(dev, port_num, 280255932Salfred IB_EVENT_PKEY_CHANGE); 281255932Salfred if (!dev->sriov.is_going_down) 282255932Salfred __propagate_pkey_ev(dev, port_num, bn, 283255932Salfred pkey_change_bitmap); 284255932Salfred } 285255932Salfred break; 286255932Salfred 287255932Salfred case IB_SMP_ATTR_GUID_INFO: 288331769Shselasky if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_PORT_MNG_CHG_EV) 289331769Shselasky return; 290255932Salfred /* paravirtualized master's guid is guid 0 -- does not change */ 291255932Salfred if (!mlx4_is_master(dev->dev)) 292255932Salfred mlx4_ib_dispatch_event(dev, port_num, 293255932Salfred IB_EVENT_GID_CHANGE); 294255932Salfred /*if master, notify relevant slaves*/ 295255932Salfred if (mlx4_is_master(dev->dev) && 296255932Salfred !dev->sriov.is_going_down) { 297255932Salfred bn = be32_to_cpu(((struct ib_smp *)mad)->attr_mod); 298255932Salfred mlx4_ib_update_cache_on_guid_change(dev, bn, port_num, 299255932Salfred (u8 *)(&((struct ib_smp *)mad)->data)); 300255932Salfred mlx4_ib_notify_slaves_on_guid_change(dev, bn, port_num, 301255932Salfred (u8 *)(&((struct ib_smp *)mad)->data)); 302255932Salfred } 303255932Salfred break; 304255932Salfred 305331769Shselasky case IB_SMP_ATTR_SL_TO_VL_TABLE: 306331769Shselasky /* cache sl to vl mapping changes for use in 307331769Shselasky * filling QP1 LRH VL field when sending packets 308331769Shselasky */ 309331769Shselasky if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_PORT_MNG_CHG_EV && 310331769Shselasky dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT) 311331769Shselasky return; 312331769Shselasky if (!mlx4_is_slave(dev->dev)) { 313331769Shselasky union sl2vl_tbl_to_u64 sl2vl64; 314331769Shselasky int jj; 315331769Shselasky 316331769Shselasky for (jj = 0; jj < 8; jj++) { 317331769Shselasky sl2vl64.sl8[jj] = ((struct ib_smp *)mad)->data[jj]; 318331769Shselasky pr_debug("sl2vl[%d] = %02x\n", jj, sl2vl64.sl8[jj]); 319331769Shselasky } 320331769Shselasky atomic64_set(&dev->sl2vl[port_num - 1], sl2vl64.sl64); 321331769Shselasky } 322331769Shselasky break; 323331769Shselasky 324255932Salfred default: 325255932Salfred break; 326219820Sjeff } 327255932Salfred} 328219820Sjeff 329255932Salfredstatic void __propagate_pkey_ev(struct mlx4_ib_dev *dev, int port_num, 330255932Salfred int block, u32 change_bitmap) 331255932Salfred{ 332255932Salfred int i, ix, slave, err; 333255932Salfred int have_event = 0; 334255932Salfred 335255932Salfred for (slave = 0; slave < dev->dev->caps.sqp_demux; slave++) { 336255932Salfred if (slave == mlx4_master_func_num(dev->dev)) 337255932Salfred continue; 338255932Salfred if (!mlx4_is_slave_active(dev->dev, slave)) 339255932Salfred continue; 340255932Salfred 341255932Salfred have_event = 0; 342255932Salfred for (i = 0; i < 32; i++) { 343255932Salfred if (!(change_bitmap & (1 << i))) 344255932Salfred continue; 345255932Salfred for (ix = 0; 346255932Salfred ix < dev->dev->caps.pkey_table_len[port_num]; ix++) { 347255932Salfred if (dev->pkeys.virt2phys_pkey[slave][port_num - 1] 348255932Salfred [ix] == i + 32 * block) { 349255932Salfred err = mlx4_gen_pkey_eqe(dev->dev, slave, port_num); 350255932Salfred pr_debug("propagate_pkey_ev: slave %d," 351255932Salfred " port %d, ix %d (%d)\n", 352255932Salfred slave, port_num, ix, err); 353255932Salfred have_event = 1; 354255932Salfred break; 355255932Salfred } 356255932Salfred } 357255932Salfred if (have_event) 358255932Salfred break; 359219820Sjeff } 360219820Sjeff } 361219820Sjeff} 362219820Sjeff 363219820Sjeffstatic void node_desc_override(struct ib_device *dev, 364219820Sjeff struct ib_mad *mad) 365219820Sjeff{ 366255932Salfred unsigned long flags; 367255932Salfred 368219820Sjeff if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || 369219820Sjeff mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) && 370219820Sjeff mad->mad_hdr.method == IB_MGMT_METHOD_GET_RESP && 371219820Sjeff mad->mad_hdr.attr_id == IB_SMP_ATTR_NODE_DESC) { 372255932Salfred spin_lock_irqsave(&to_mdev(dev)->sm_lock, flags); 373331769Shselasky memcpy(((struct ib_smp *) mad)->data, dev->node_desc, 374331769Shselasky IB_DEVICE_NODE_DESC_MAX); 375255932Salfred spin_unlock_irqrestore(&to_mdev(dev)->sm_lock, flags); 376219820Sjeff } 377219820Sjeff} 378219820Sjeff 379331769Shselaskystatic void forward_trap(struct mlx4_ib_dev *dev, u8 port_num, const struct ib_mad *mad) 380219820Sjeff{ 381219820Sjeff int qpn = mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED; 382219820Sjeff struct ib_mad_send_buf *send_buf; 383219820Sjeff struct ib_mad_agent *agent = dev->send_agent[port_num - 1][qpn]; 384219820Sjeff int ret; 385255932Salfred unsigned long flags; 386219820Sjeff 387219820Sjeff if (agent) { 388219820Sjeff send_buf = ib_create_send_mad(agent, qpn, 0, 0, IB_MGMT_MAD_HDR, 389331769Shselasky IB_MGMT_MAD_DATA, GFP_ATOMIC, 390331769Shselasky IB_MGMT_BASE_VERSION); 391255932Salfred if (IS_ERR(send_buf)) 392255932Salfred return; 393219820Sjeff /* 394219820Sjeff * We rely here on the fact that MLX QPs don't use the 395219820Sjeff * address handle after the send is posted (this is 396219820Sjeff * wrong following the IB spec strictly, but we know 397219820Sjeff * it's OK for our devices). 398219820Sjeff */ 399255932Salfred spin_lock_irqsave(&dev->sm_lock, flags); 400219820Sjeff memcpy(send_buf->mad, mad, sizeof *mad); 401219820Sjeff if ((send_buf->ah = dev->sm_ah[port_num - 1])) 402219820Sjeff ret = ib_post_send_mad(send_buf, NULL); 403219820Sjeff else 404219820Sjeff ret = -EINVAL; 405255932Salfred spin_unlock_irqrestore(&dev->sm_lock, flags); 406219820Sjeff 407219820Sjeff if (ret) 408219820Sjeff ib_free_send_mad(send_buf); 409219820Sjeff } 410219820Sjeff} 411219820Sjeff 412255932Salfredstatic int mlx4_ib_demux_sa_handler(struct ib_device *ibdev, int port, int slave, 413255932Salfred struct ib_sa_mad *sa_mad) 414219820Sjeff{ 415255932Salfred int ret = 0; 416255932Salfred 417255932Salfred /* dispatch to different sa handlers */ 418255932Salfred switch (be16_to_cpu(sa_mad->mad_hdr.attr_id)) { 419255932Salfred case IB_SA_ATTR_MC_MEMBER_REC: 420255932Salfred ret = mlx4_ib_mcg_demux_handler(ibdev, port, slave, sa_mad); 421255932Salfred break; 422255932Salfred default: 423255932Salfred break; 424255932Salfred } 425255932Salfred return ret; 426219820Sjeff} 427219820Sjeff 428255932Salfredint mlx4_ib_find_real_gid(struct ib_device *ibdev, u8 port, __be64 guid) 429219820Sjeff{ 430255932Salfred struct mlx4_ib_dev *dev = to_mdev(ibdev); 431255932Salfred int i; 432255932Salfred 433255932Salfred for (i = 0; i < dev->dev->caps.sqp_demux; i++) { 434255932Salfred if (dev->sriov.demux[port - 1].guid_cache[i] == guid) 435255932Salfred return i; 436255932Salfred } 437255932Salfred return -1; 438219820Sjeff} 439219820Sjeff 440255932Salfred 441255932Salfredstatic int find_slave_port_pkey_ix(struct mlx4_ib_dev *dev, int slave, 442255932Salfred u8 port, u16 pkey, u16 *ix) 443255932Salfred{ 444255932Salfred int i, ret; 445255932Salfred u8 unassigned_pkey_ix, pkey_ix, partial_ix = 0xFF; 446255932Salfred u16 slot_pkey; 447255932Salfred 448255932Salfred if (slave == mlx4_master_func_num(dev->dev)) 449255932Salfred return ib_find_cached_pkey(&dev->ib_dev, port, pkey, ix); 450255932Salfred 451255932Salfred unassigned_pkey_ix = dev->dev->phys_caps.pkey_phys_table_len[port] - 1; 452255932Salfred 453255932Salfred for (i = 0; i < dev->dev->caps.pkey_table_len[port]; i++) { 454255932Salfred if (dev->pkeys.virt2phys_pkey[slave][port - 1][i] == unassigned_pkey_ix) 455255932Salfred continue; 456255932Salfred 457255932Salfred pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][i]; 458255932Salfred 459255932Salfred ret = ib_get_cached_pkey(&dev->ib_dev, port, pkey_ix, &slot_pkey); 460255932Salfred if (ret) 461255932Salfred continue; 462255932Salfred if ((slot_pkey & 0x7FFF) == (pkey & 0x7FFF)) { 463255932Salfred if (slot_pkey & 0x8000) { 464255932Salfred *ix = (u16) pkey_ix; 465255932Salfred return 0; 466255932Salfred } else { 467255932Salfred /* take first partial pkey index found */ 468255932Salfred if (partial_ix == 0xFF) 469255932Salfred partial_ix = pkey_ix; 470255932Salfred } 471255932Salfred } 472255932Salfred } 473255932Salfred 474255932Salfred if (partial_ix < 0xFF) { 475255932Salfred *ix = (u16) partial_ix; 476255932Salfred return 0; 477255932Salfred } 478255932Salfred 479255932Salfred return -EINVAL; 480255932Salfred} 481255932Salfred 482255932Salfredint mlx4_ib_send_to_slave(struct mlx4_ib_dev *dev, int slave, u8 port, 483255932Salfred enum ib_qp_type dest_qpt, struct ib_wc *wc, 484255932Salfred struct ib_grh *grh, struct ib_mad *mad) 485255932Salfred{ 486255932Salfred struct ib_sge list; 487331769Shselasky struct ib_ud_wr wr; 488331769Shselasky struct ib_send_wr *bad_wr; 489255932Salfred struct mlx4_ib_demux_pv_ctx *tun_ctx; 490255932Salfred struct mlx4_ib_demux_pv_qp *tun_qp; 491255932Salfred struct mlx4_rcv_tunnel_mad *tun_mad; 492255932Salfred struct ib_ah_attr attr; 493255932Salfred struct ib_ah *ah; 494255932Salfred struct ib_qp *src_qp = NULL; 495255932Salfred unsigned tun_tx_ix = 0; 496255932Salfred int dqpn; 497255932Salfred int ret = 0; 498255932Salfred u16 tun_pkey_ix; 499255932Salfred u16 cached_pkey; 500255932Salfred u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 501255932Salfred 502255932Salfred if (dest_qpt > IB_QPT_GSI) 503255932Salfred return -EINVAL; 504255932Salfred 505255932Salfred tun_ctx = dev->sriov.demux[port-1].tun[slave]; 506255932Salfred 507255932Salfred /* check if proxy qp created */ 508255932Salfred if (!tun_ctx || tun_ctx->state != DEMUX_PV_STATE_ACTIVE) 509255932Salfred return -EAGAIN; 510255932Salfred 511255932Salfred if (!dest_qpt) 512255932Salfred tun_qp = &tun_ctx->qp[0]; 513255932Salfred else 514255932Salfred tun_qp = &tun_ctx->qp[1]; 515255932Salfred 516255932Salfred /* compute P_Key index to put in tunnel header for slave */ 517255932Salfred if (dest_qpt) { 518255932Salfred u16 pkey_ix; 519255932Salfred ret = ib_get_cached_pkey(&dev->ib_dev, port, wc->pkey_index, &cached_pkey); 520255932Salfred if (ret) 521255932Salfred return -EINVAL; 522255932Salfred 523255932Salfred ret = find_slave_port_pkey_ix(dev, slave, port, cached_pkey, &pkey_ix); 524255932Salfred if (ret) 525255932Salfred return -EINVAL; 526255932Salfred tun_pkey_ix = pkey_ix; 527255932Salfred } else 528255932Salfred tun_pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][0]; 529255932Salfred 530255932Salfred dqpn = dev->dev->phys_caps.base_proxy_sqpn + 8 * slave + port + (dest_qpt * 2) - 1; 531255932Salfred 532255932Salfred /* get tunnel tx data buf for slave */ 533255932Salfred src_qp = tun_qp->qp; 534255932Salfred 535255932Salfred /* create ah. Just need an empty one with the port num for the post send. 536255932Salfred * The driver will set the force loopback bit in post_send */ 537255932Salfred memset(&attr, 0, sizeof attr); 538255932Salfred attr.port_num = port; 539255932Salfred if (is_eth) { 540255932Salfred memcpy(&attr.grh.dgid.raw[0], &grh->dgid.raw[0], 16); 541255932Salfred attr.ah_flags = IB_AH_GRH; 542255932Salfred } 543255932Salfred ah = ib_create_ah(tun_ctx->pd, &attr); 544255932Salfred if (IS_ERR(ah)) 545255932Salfred return -ENOMEM; 546255932Salfred 547255932Salfred /* allocate tunnel tx buf after pass failure returns */ 548255932Salfred spin_lock(&tun_qp->tx_lock); 549255932Salfred if (tun_qp->tx_ix_head - tun_qp->tx_ix_tail >= 550255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)) 551255932Salfred ret = -EAGAIN; 552255932Salfred else 553255932Salfred tun_tx_ix = (++tun_qp->tx_ix_head) & (MLX4_NUM_TUNNEL_BUFS - 1); 554255932Salfred spin_unlock(&tun_qp->tx_lock); 555255932Salfred if (ret) 556331769Shselasky goto end; 557255932Salfred 558255932Salfred tun_mad = (struct mlx4_rcv_tunnel_mad *) (tun_qp->tx_ring[tun_tx_ix].buf.addr); 559255932Salfred if (tun_qp->tx_ring[tun_tx_ix].ah) 560255932Salfred ib_destroy_ah(tun_qp->tx_ring[tun_tx_ix].ah); 561255932Salfred tun_qp->tx_ring[tun_tx_ix].ah = ah; 562255932Salfred ib_dma_sync_single_for_cpu(&dev->ib_dev, 563255932Salfred tun_qp->tx_ring[tun_tx_ix].buf.map, 564255932Salfred sizeof (struct mlx4_rcv_tunnel_mad), 565255932Salfred DMA_TO_DEVICE); 566255932Salfred 567255932Salfred /* copy over to tunnel buffer */ 568255932Salfred if (grh) 569255932Salfred memcpy(&tun_mad->grh, grh, sizeof *grh); 570255932Salfred memcpy(&tun_mad->mad, mad, sizeof *mad); 571255932Salfred 572255932Salfred /* adjust tunnel data */ 573255932Salfred tun_mad->hdr.pkey_index = cpu_to_be16(tun_pkey_ix); 574255932Salfred tun_mad->hdr.flags_src_qp = cpu_to_be32(wc->src_qp & 0xFFFFFF); 575255932Salfred tun_mad->hdr.g_ml_path = (grh && (wc->wc_flags & IB_WC_GRH)) ? 0x80 : 0; 576255932Salfred 577278886Shselasky if (is_eth) { 578278886Shselasky u16 vlan = 0; 579278886Shselasky if (mlx4_get_slave_default_vlan(dev->dev, port, slave, &vlan, 580331769Shselasky NULL)) { 581331769Shselasky /* VST mode */ 582331769Shselasky if (vlan != wc->vlan_id) { 583331769Shselasky /* Packet vlan is not the VST-assigned vlan. 584331769Shselasky * Drop the packet. 585331769Shselasky */ 586331769Shselasky ret = -EPERM; 587278886Shselasky goto out; 588331769Shselasky } else { 589331769Shselasky /* Remove the vlan tag before forwarding 590331769Shselasky * the packet to the VF. 591331769Shselasky */ 592331769Shselasky vlan = 0xffff; 593331769Shselasky } 594278886Shselasky } else { 595278886Shselasky vlan = wc->vlan_id; 596278886Shselasky } 597278886Shselasky 598278886Shselasky tun_mad->hdr.sl_vid = cpu_to_be16(vlan); 599278886Shselasky memcpy((char *)&tun_mad->hdr.mac_31_0, &(wc->smac[0]), 4); 600278886Shselasky memcpy((char *)&tun_mad->hdr.slid_mac_47_32, &(wc->smac[4]), 2); 601278886Shselasky } else { 602278886Shselasky tun_mad->hdr.sl_vid = cpu_to_be16(((u16)(wc->sl)) << 12); 603278886Shselasky tun_mad->hdr.slid_mac_47_32 = cpu_to_be16(wc->slid); 604278886Shselasky } 605278886Shselasky 606255932Salfred ib_dma_sync_single_for_device(&dev->ib_dev, 607255932Salfred tun_qp->tx_ring[tun_tx_ix].buf.map, 608255932Salfred sizeof (struct mlx4_rcv_tunnel_mad), 609255932Salfred DMA_TO_DEVICE); 610255932Salfred 611255932Salfred list.addr = tun_qp->tx_ring[tun_tx_ix].buf.map; 612255932Salfred list.length = sizeof (struct mlx4_rcv_tunnel_mad); 613331769Shselasky list.lkey = tun_ctx->pd->local_dma_lkey; 614255932Salfred 615331769Shselasky wr.ah = ah; 616331769Shselasky wr.port_num = port; 617331769Shselasky wr.remote_qkey = IB_QP_SET_QKEY; 618331769Shselasky wr.remote_qpn = dqpn; 619331769Shselasky wr.wr.next = NULL; 620331769Shselasky wr.wr.wr_id = ((u64) tun_tx_ix) | MLX4_TUN_SET_WRID_QPN(dest_qpt); 621331769Shselasky wr.wr.sg_list = &list; 622331769Shselasky wr.wr.num_sge = 1; 623331769Shselasky wr.wr.opcode = IB_WR_SEND; 624331769Shselasky wr.wr.send_flags = IB_SEND_SIGNALED; 625255932Salfred 626331769Shselasky ret = ib_post_send(src_qp, &wr.wr, &bad_wr); 627331769Shselasky if (!ret) 628331769Shselasky return 0; 629331769Shselasky out: 630331769Shselasky spin_lock(&tun_qp->tx_lock); 631331769Shselasky tun_qp->tx_ix_tail++; 632331769Shselasky spin_unlock(&tun_qp->tx_lock); 633331769Shselasky tun_qp->tx_ring[tun_tx_ix].ah = NULL; 634331769Shselaskyend: 635331769Shselasky ib_destroy_ah(ah); 636255932Salfred return ret; 637255932Salfred} 638255932Salfred 639255932Salfredstatic int mlx4_ib_demux_mad(struct ib_device *ibdev, u8 port, 640255932Salfred struct ib_wc *wc, struct ib_grh *grh, 641255932Salfred struct ib_mad *mad) 642255932Salfred{ 643255932Salfred struct mlx4_ib_dev *dev = to_mdev(ibdev); 644331769Shselasky int err, other_port; 645331769Shselasky int slave = -1; 646255932Salfred u8 *slave_id; 647255932Salfred int is_eth = 0; 648255932Salfred 649255932Salfred if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND) 650255932Salfred is_eth = 0; 651255932Salfred else 652255932Salfred is_eth = 1; 653255932Salfred 654255932Salfred if (is_eth) { 655329159Shselasky if (!(wc->wc_flags & IB_WC_GRH)) { 656255932Salfred mlx4_ib_warn(ibdev, "RoCE grh not present.\n"); 657255932Salfred return -EINVAL; 658255932Salfred } 659255932Salfred if (mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_CM) { 660255932Salfred mlx4_ib_warn(ibdev, "RoCE mgmt class is not CM\n"); 661255932Salfred return -EINVAL; 662255932Salfred } 663331769Shselasky err = mlx4_get_slave_from_roce_gid(dev->dev, port, grh->dgid.raw, &slave); 664331769Shselasky if (err && mlx4_is_mf_bonded(dev->dev)) { 665331769Shselasky other_port = (port == 1) ? 2 : 1; 666331769Shselasky err = mlx4_get_slave_from_roce_gid(dev->dev, other_port, grh->dgid.raw, &slave); 667331769Shselasky if (!err) { 668331769Shselasky port = other_port; 669331769Shselasky pr_debug("resolved slave %d from gid %pI6 wire port %d other %d\n", 670331769Shselasky slave, grh->dgid.raw, port, other_port); 671331769Shselasky } 672331769Shselasky } 673331769Shselasky if (err) { 674255932Salfred mlx4_ib_warn(ibdev, "failed matching grh\n"); 675255932Salfred return -ENOENT; 676255932Salfred } 677255932Salfred if (slave >= dev->dev->caps.sqp_demux) { 678255932Salfred mlx4_ib_warn(ibdev, "slave id: %d is bigger than allowed:%d\n", 679255932Salfred slave, dev->dev->caps.sqp_demux); 680255932Salfred return -ENOENT; 681255932Salfred } 682255932Salfred 683331769Shselasky if (mlx4_ib_demux_cm_handler(ibdev, port, NULL, mad)) 684255932Salfred return 0; 685255932Salfred 686255932Salfred err = mlx4_ib_send_to_slave(dev, slave, port, wc->qp->qp_type, wc, grh, mad); 687255932Salfred if (err) 688255932Salfred pr_debug("failed sending to slave %d via tunnel qp (%d)\n", 689255932Salfred slave, err); 690255932Salfred return 0; 691255932Salfred } 692255932Salfred 693255932Salfred /* Initially assume that this mad is for us */ 694255932Salfred slave = mlx4_master_func_num(dev->dev); 695255932Salfred 696255932Salfred /* See if the slave id is encoded in a response mad */ 697255932Salfred if (mad->mad_hdr.method & 0x80) { 698255932Salfred slave_id = (u8 *) &mad->mad_hdr.tid; 699255932Salfred slave = *slave_id; 700255932Salfred if (slave != 255) /*255 indicates the dom0*/ 701255932Salfred *slave_id = 0; /* remap tid */ 702255932Salfred } 703255932Salfred 704255932Salfred /* If a grh is present, we demux according to it */ 705255932Salfred if (wc->wc_flags & IB_WC_GRH) { 706255932Salfred slave = mlx4_ib_find_real_gid(ibdev, port, grh->dgid.global.interface_id); 707255932Salfred if (slave < 0) { 708255932Salfred mlx4_ib_warn(ibdev, "failed matching grh\n"); 709255932Salfred return -ENOENT; 710255932Salfred } 711255932Salfred } 712255932Salfred /* Class-specific handling */ 713255932Salfred switch (mad->mad_hdr.mgmt_class) { 714331769Shselasky case IB_MGMT_CLASS_SUBN_LID_ROUTED: 715331769Shselasky case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: 716331769Shselasky /* 255 indicates the dom0 */ 717331769Shselasky if (slave != 255 && slave != mlx4_master_func_num(dev->dev)) { 718331769Shselasky if (!mlx4_vf_smi_enabled(dev->dev, slave, port)) 719331769Shselasky return -EPERM; 720331769Shselasky /* for a VF. drop unsolicited MADs */ 721331769Shselasky if (!(mad->mad_hdr.method & IB_MGMT_METHOD_RESP)) { 722331769Shselasky mlx4_ib_warn(ibdev, "demux QP0. rejecting unsolicited mad for slave %d class 0x%x, method 0x%x\n", 723331769Shselasky slave, mad->mad_hdr.mgmt_class, 724331769Shselasky mad->mad_hdr.method); 725331769Shselasky return -EINVAL; 726331769Shselasky } 727331769Shselasky } 728331769Shselasky break; 729255932Salfred case IB_MGMT_CLASS_SUBN_ADM: 730255932Salfred if (mlx4_ib_demux_sa_handler(ibdev, port, slave, 731255932Salfred (struct ib_sa_mad *) mad)) 732255932Salfred return 0; 733255932Salfred break; 734255932Salfred case IB_MGMT_CLASS_CM: 735331769Shselasky if (mlx4_ib_demux_cm_handler(ibdev, port, &slave, mad)) 736255932Salfred return 0; 737255932Salfred break; 738255932Salfred case IB_MGMT_CLASS_DEVICE_MGMT: 739255932Salfred if (mad->mad_hdr.method != IB_MGMT_METHOD_GET_RESP) 740255932Salfred return 0; 741255932Salfred break; 742255932Salfred default: 743255932Salfred /* Drop unsupported classes for slaves in tunnel mode */ 744255932Salfred if (slave != mlx4_master_func_num(dev->dev)) { 745255932Salfred pr_debug("dropping unsupported ingress mad from class:%d " 746255932Salfred "for slave:%d\n", mad->mad_hdr.mgmt_class, slave); 747255932Salfred return 0; 748255932Salfred } 749255932Salfred } 750255932Salfred /*make sure that no slave==255 was not handled yet.*/ 751255932Salfred if (slave >= dev->dev->caps.sqp_demux) { 752255932Salfred mlx4_ib_warn(ibdev, "slave id: %d is bigger than allowed:%d\n", 753255932Salfred slave, dev->dev->caps.sqp_demux); 754255932Salfred return -ENOENT; 755255932Salfred } 756255932Salfred 757255932Salfred err = mlx4_ib_send_to_slave(dev, slave, port, wc->qp->qp_type, wc, grh, mad); 758255932Salfred if (err) 759255932Salfred pr_debug("failed sending to slave %d via tunnel qp (%d)\n", 760255932Salfred slave, err); 761255932Salfred return 0; 762255932Salfred} 763255932Salfred 764219820Sjeffstatic int ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 765331769Shselasky const struct ib_wc *in_wc, const struct ib_grh *in_grh, 766331769Shselasky const struct ib_mad *in_mad, struct ib_mad *out_mad) 767219820Sjeff{ 768219820Sjeff u16 slid, prev_lid = 0; 769219820Sjeff int err; 770219820Sjeff struct ib_port_attr pattr; 771219820Sjeff 772255932Salfred if (in_wc && in_wc->qp->qp_num) { 773255932Salfred pr_debug("received MAD: slid:%d sqpn:%d " 774255932Salfred "dlid_bits:%d dqpn:%d wc_flags:0x%x, cls %x, mtd %x, atr %x\n", 775255932Salfred in_wc->slid, in_wc->src_qp, 776255932Salfred in_wc->dlid_path_bits, 777255932Salfred in_wc->qp->qp_num, 778255932Salfred in_wc->wc_flags, 779255932Salfred in_mad->mad_hdr.mgmt_class, in_mad->mad_hdr.method, 780255932Salfred be16_to_cpu(in_mad->mad_hdr.attr_id)); 781255932Salfred if (in_wc->wc_flags & IB_WC_GRH) { 782255932Salfred pr_debug("sgid_hi:0x%016llx sgid_lo:0x%016llx\n", 783278886Shselasky (unsigned long long)be64_to_cpu(in_grh->sgid.global.subnet_prefix), 784278886Shselasky (unsigned long long)be64_to_cpu(in_grh->sgid.global.interface_id)); 785255932Salfred pr_debug("dgid_hi:0x%016llx dgid_lo:0x%016llx\n", 786278886Shselasky (unsigned long long)be64_to_cpu(in_grh->dgid.global.subnet_prefix), 787278886Shselasky (unsigned long long)be64_to_cpu(in_grh->dgid.global.interface_id)); 788255932Salfred } 789255932Salfred } 790255932Salfred 791219820Sjeff slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE); 792219820Sjeff 793219820Sjeff if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0) { 794219820Sjeff forward_trap(to_mdev(ibdev), port_num, in_mad); 795219820Sjeff return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 796219820Sjeff } 797219820Sjeff 798219820Sjeff if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || 799219820Sjeff in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { 800219820Sjeff if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET && 801219820Sjeff in_mad->mad_hdr.method != IB_MGMT_METHOD_SET && 802219820Sjeff in_mad->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS) 803219820Sjeff return IB_MAD_RESULT_SUCCESS; 804219820Sjeff 805219820Sjeff /* 806255932Salfred * Don't process SMInfo queries -- the SMA can't handle them. 807219820Sjeff */ 808255932Salfred if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO) 809219820Sjeff return IB_MAD_RESULT_SUCCESS; 810219820Sjeff } else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT || 811219820Sjeff in_mad->mad_hdr.mgmt_class == MLX4_IB_VENDOR_CLASS1 || 812219820Sjeff in_mad->mad_hdr.mgmt_class == MLX4_IB_VENDOR_CLASS2 || 813219820Sjeff in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_CONG_MGMT) { 814219820Sjeff if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET && 815219820Sjeff in_mad->mad_hdr.method != IB_MGMT_METHOD_SET) 816219820Sjeff return IB_MAD_RESULT_SUCCESS; 817219820Sjeff } else 818219820Sjeff return IB_MAD_RESULT_SUCCESS; 819219820Sjeff 820219820Sjeff if ((in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED || 821219820Sjeff in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) && 822219820Sjeff in_mad->mad_hdr.method == IB_MGMT_METHOD_SET && 823219820Sjeff in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO && 824219820Sjeff !ib_query_port(ibdev, port_num, &pattr)) 825219820Sjeff prev_lid = pattr.lid; 826219820Sjeff 827219820Sjeff err = mlx4_MAD_IFC(to_mdev(ibdev), 828255932Salfred (mad_flags & IB_MAD_IGNORE_MKEY ? MLX4_MAD_IFC_IGNORE_MKEY : 0) | 829255932Salfred (mad_flags & IB_MAD_IGNORE_BKEY ? MLX4_MAD_IFC_IGNORE_BKEY : 0) | 830255932Salfred MLX4_MAD_IFC_NET_VIEW, 831219820Sjeff port_num, in_wc, in_grh, in_mad, out_mad); 832219820Sjeff if (err) 833219820Sjeff return IB_MAD_RESULT_FAILURE; 834219820Sjeff 835219820Sjeff if (!out_mad->mad_hdr.status) { 836331769Shselasky smp_snoop(ibdev, port_num, in_mad, prev_lid); 837255932Salfred /* slaves get node desc from FW */ 838255932Salfred if (!mlx4_is_slave(to_mdev(ibdev)->dev)) 839255932Salfred node_desc_override(ibdev, out_mad); 840219820Sjeff } 841219820Sjeff 842219820Sjeff /* set return bit in status of directed route responses */ 843219820Sjeff if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) 844219820Sjeff out_mad->mad_hdr.status |= cpu_to_be16(1 << 15); 845219820Sjeff 846219820Sjeff if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS) 847219820Sjeff /* no response for trap repress */ 848219820Sjeff return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; 849219820Sjeff 850219820Sjeff return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 851219820Sjeff} 852219820Sjeff 853329159Shselaskystatic void edit_counter(struct mlx4_counter *cnt, void *counters, 854329159Shselasky __be16 attr_id) 855219820Sjeff{ 856255932Salfred switch (attr_id) { 857255932Salfred case IB_PMA_PORT_COUNTERS: 858255932Salfred { 859255932Salfred struct ib_pma_portcounters *pma_cnt = 860329159Shselasky (struct ib_pma_portcounters *)counters; 861255932Salfred 862329159Shselasky ASSIGN_32BIT_COUNTER(pma_cnt->port_xmit_data, 863329159Shselasky (be64_to_cpu(cnt->tx_bytes) >> 2)); 864329159Shselasky ASSIGN_32BIT_COUNTER(pma_cnt->port_rcv_data, 865329159Shselasky (be64_to_cpu(cnt->rx_bytes) >> 2)); 866329159Shselasky ASSIGN_32BIT_COUNTER(pma_cnt->port_xmit_packets, 867329159Shselasky be64_to_cpu(cnt->tx_frames)); 868329159Shselasky ASSIGN_32BIT_COUNTER(pma_cnt->port_rcv_packets, 869329159Shselasky be64_to_cpu(cnt->rx_frames)); 870255932Salfred break; 871255932Salfred } 872255932Salfred case IB_PMA_PORT_COUNTERS_EXT: 873255932Salfred { 874255932Salfred struct ib_pma_portcounters_ext *pma_cnt_ext = 875329159Shselasky (struct ib_pma_portcounters_ext *)counters; 876219820Sjeff 877255932Salfred pma_cnt_ext->port_xmit_data = 878329159Shselasky cpu_to_be64(be64_to_cpu(cnt->tx_bytes) >> 2); 879329159Shselasky pma_cnt_ext->port_rcv_data = 880329159Shselasky cpu_to_be64(be64_to_cpu(cnt->rx_bytes) >> 2); 881329159Shselasky pma_cnt_ext->port_xmit_packets = cnt->tx_frames; 882329159Shselasky pma_cnt_ext->port_rcv_packets = cnt->rx_frames; 883255932Salfred break; 884255932Salfred } 885255932Salfred default: 886255932Salfred break; 887255932Salfred } 888219820Sjeff} 889219820Sjeff 890331769Shselaskystatic int iboe_process_mad_port_info(void *out_mad) 891331769Shselasky{ 892331769Shselasky struct ib_class_port_info cpi = {}; 893331769Shselasky 894331769Shselasky cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH; 895331769Shselasky memcpy(out_mad, &cpi, sizeof(cpi)); 896331769Shselasky return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 897331769Shselasky} 898331769Shselasky 899255932Salfredstatic int iboe_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 900329159Shselasky const struct ib_wc *in_wc, const struct ib_grh *in_grh, 901329159Shselasky const struct ib_mad *in_mad, struct ib_mad *out_mad) 902255932Salfred{ 903329159Shselasky struct mlx4_counter counter_stats; 904255932Salfred struct mlx4_ib_dev *dev = to_mdev(ibdev); 905331769Shselasky struct counter_index *tmp_counter; 906331769Shselasky int err = IB_MAD_RESULT_FAILURE, stats_avail = 0; 907255932Salfred 908255932Salfred if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_PERF_MGMT) 909255932Salfred return -EINVAL; 910255932Salfred 911331769Shselasky if (in_mad->mad_hdr.attr_id == IB_PMA_CLASS_PORT_INFO) 912331769Shselasky return iboe_process_mad_port_info((void *)(out_mad->data + 40)); 913331769Shselasky 914331769Shselasky memset(&counter_stats, 0, sizeof(counter_stats)); 915331769Shselasky mutex_lock(&dev->counters_table[port_num - 1].mutex); 916331769Shselasky list_for_each_entry(tmp_counter, 917331769Shselasky &dev->counters_table[port_num - 1].counters_list, 918331769Shselasky list) { 919329159Shselasky err = mlx4_get_counter_stats(dev->dev, 920331769Shselasky tmp_counter->index, 921329159Shselasky &counter_stats, 0); 922331769Shselasky if (err) { 923331769Shselasky err = IB_MAD_RESULT_FAILURE; 924331769Shselasky stats_avail = 0; 925331769Shselasky break; 926331769Shselasky } 927331769Shselasky stats_avail = 1; 928331769Shselasky } 929331769Shselasky mutex_unlock(&dev->counters_table[port_num - 1].mutex); 930331769Shselasky if (stats_avail) { 931331769Shselasky memset(out_mad->data, 0, sizeof out_mad->data); 932329159Shselasky switch (counter_stats.counter_mode & 0xf) { 933219820Sjeff case 0: 934329159Shselasky edit_counter(&counter_stats, 935255932Salfred (void *)(out_mad->data + 40), 936255932Salfred in_mad->mad_hdr.attr_id); 937331769Shselasky err = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY; 938219820Sjeff break; 939219820Sjeff default: 940219820Sjeff err = IB_MAD_RESULT_FAILURE; 941219820Sjeff } 942219820Sjeff } 943219820Sjeff 944219820Sjeff return err; 945219820Sjeff} 946219820Sjeff 947255932Salfredint mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, 948331769Shselasky const struct ib_wc *in_wc, const struct ib_grh *in_grh, 949331769Shselasky const struct ib_mad_hdr *in, size_t in_mad_size, 950331769Shselasky struct ib_mad_hdr *out, size_t *out_mad_size, 951331769Shselasky u16 *out_mad_pkey_index) 952219820Sjeff{ 953331769Shselasky struct mlx4_ib_dev *dev = to_mdev(ibdev); 954331769Shselasky const struct ib_mad *in_mad = (const struct ib_mad *)in; 955331769Shselasky struct ib_mad *out_mad = (struct ib_mad *)out; 956331769Shselasky enum rdma_link_layer link = rdma_port_get_link_layer(ibdev, port_num); 957331769Shselasky 958331769Shselasky if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) || 959331769Shselasky *out_mad_size != sizeof(*out_mad))) 960331769Shselasky return IB_MAD_RESULT_FAILURE; 961331769Shselasky 962331769Shselasky /* iboe_process_mad() which uses the HCA flow-counters to implement IB PMA 963331769Shselasky * queries, should be called only by VFs and for that specific purpose 964331769Shselasky */ 965331769Shselasky if (link == IB_LINK_LAYER_INFINIBAND) { 966331769Shselasky if (mlx4_is_slave(dev->dev) && 967331769Shselasky (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT && 968331769Shselasky (in_mad->mad_hdr.attr_id == IB_PMA_PORT_COUNTERS || 969331769Shselasky in_mad->mad_hdr.attr_id == IB_PMA_PORT_COUNTERS_EXT || 970331769Shselasky in_mad->mad_hdr.attr_id == IB_PMA_CLASS_PORT_INFO))) 971331769Shselasky return iboe_process_mad(ibdev, mad_flags, port_num, in_wc, 972331769Shselasky in_grh, in_mad, out_mad); 973331769Shselasky 974219820Sjeff return ib_process_mad(ibdev, mad_flags, port_num, in_wc, 975219820Sjeff in_grh, in_mad, out_mad); 976331769Shselasky } 977331769Shselasky 978331769Shselasky if (link == IB_LINK_LAYER_ETHERNET) 979255932Salfred return iboe_process_mad(ibdev, mad_flags, port_num, in_wc, 980331769Shselasky in_grh, in_mad, out_mad); 981331769Shselasky 982331769Shselasky return -EINVAL; 983219820Sjeff} 984219820Sjeff 985219820Sjeffstatic void send_handler(struct ib_mad_agent *agent, 986219820Sjeff struct ib_mad_send_wc *mad_send_wc) 987219820Sjeff{ 988255932Salfred if (mad_send_wc->send_buf->context[0]) 989255932Salfred ib_destroy_ah(mad_send_wc->send_buf->context[0]); 990219820Sjeff ib_free_send_mad(mad_send_wc->send_buf); 991219820Sjeff} 992219820Sjeff 993219820Sjeffint mlx4_ib_mad_init(struct mlx4_ib_dev *dev) 994219820Sjeff{ 995219820Sjeff struct ib_mad_agent *agent; 996219820Sjeff int p, q; 997219820Sjeff int ret; 998219820Sjeff enum rdma_link_layer ll; 999219820Sjeff 1000219820Sjeff for (p = 0; p < dev->num_ports; ++p) { 1001219820Sjeff ll = rdma_port_get_link_layer(&dev->ib_dev, p + 1); 1002219820Sjeff for (q = 0; q <= 1; ++q) { 1003219820Sjeff if (ll == IB_LINK_LAYER_INFINIBAND) { 1004219820Sjeff agent = ib_register_mad_agent(&dev->ib_dev, p + 1, 1005219820Sjeff q ? IB_QPT_GSI : IB_QPT_SMI, 1006219820Sjeff NULL, 0, send_handler, 1007331769Shselasky NULL, NULL, 0); 1008219820Sjeff if (IS_ERR(agent)) { 1009219820Sjeff ret = PTR_ERR(agent); 1010219820Sjeff goto err; 1011219820Sjeff } 1012219820Sjeff dev->send_agent[p][q] = agent; 1013219820Sjeff } else 1014219820Sjeff dev->send_agent[p][q] = NULL; 1015219820Sjeff } 1016219820Sjeff } 1017219820Sjeff 1018219820Sjeff return 0; 1019219820Sjeff 1020219820Sjefferr: 1021219820Sjeff for (p = 0; p < dev->num_ports; ++p) 1022219820Sjeff for (q = 0; q <= 1; ++q) 1023219820Sjeff if (dev->send_agent[p][q]) 1024219820Sjeff ib_unregister_mad_agent(dev->send_agent[p][q]); 1025219820Sjeff 1026219820Sjeff return ret; 1027219820Sjeff} 1028219820Sjeff 1029219820Sjeffvoid mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev) 1030219820Sjeff{ 1031219820Sjeff struct ib_mad_agent *agent; 1032219820Sjeff int p, q; 1033219820Sjeff 1034219820Sjeff for (p = 0; p < dev->num_ports; ++p) { 1035219820Sjeff for (q = 0; q <= 1; ++q) { 1036219820Sjeff agent = dev->send_agent[p][q]; 1037219820Sjeff if (agent) { 1038219820Sjeff dev->send_agent[p][q] = NULL; 1039219820Sjeff ib_unregister_mad_agent(agent); 1040219820Sjeff } 1041219820Sjeff } 1042219820Sjeff 1043219820Sjeff if (dev->sm_ah[p]) 1044219820Sjeff ib_destroy_ah(dev->sm_ah[p]); 1045219820Sjeff } 1046219820Sjeff} 1047255932Salfred 1048255932Salfredstatic void handle_lid_change_event(struct mlx4_ib_dev *dev, u8 port_num) 1049255932Salfred{ 1050255932Salfred mlx4_ib_dispatch_event(dev, port_num, IB_EVENT_LID_CHANGE); 1051255932Salfred 1052255932Salfred if (mlx4_is_master(dev->dev) && !dev->sriov.is_going_down) 1053255932Salfred mlx4_gen_slaves_port_mgt_ev(dev->dev, port_num, 1054329159Shselasky MLX4_EQ_PORT_INFO_LID_CHANGE_MASK); 1055255932Salfred} 1056255932Salfred 1057255932Salfredstatic void handle_client_rereg_event(struct mlx4_ib_dev *dev, u8 port_num) 1058255932Salfred{ 1059255932Salfred /* re-configure the alias-guid and mcg's */ 1060255932Salfred if (mlx4_is_master(dev->dev)) { 1061255932Salfred mlx4_ib_invalidate_all_guid_record(dev, port_num); 1062255932Salfred 1063255932Salfred if (!dev->sriov.is_going_down) { 1064255932Salfred mlx4_ib_mcg_port_cleanup(&dev->sriov.demux[port_num - 1], 0); 1065255932Salfred mlx4_gen_slaves_port_mgt_ev(dev->dev, port_num, 1066329159Shselasky MLX4_EQ_PORT_INFO_CLIENT_REREG_MASK); 1067255932Salfred } 1068255932Salfred } 1069331769Shselasky 1070331769Shselasky /* Update the sl to vl table from inside client rereg 1071331769Shselasky * only if in secure-host mode (snooping is not possible) 1072331769Shselasky * and the sl-to-vl change event is not generated by FW. 1073331769Shselasky */ 1074331769Shselasky if (!mlx4_is_slave(dev->dev) && 1075331769Shselasky dev->dev->flags & MLX4_FLAG_SECURE_HOST && 1076331769Shselasky !(dev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT)) { 1077331769Shselasky if (mlx4_is_master(dev->dev)) 1078331769Shselasky /* already in work queue from mlx4_ib_event queueing 1079331769Shselasky * mlx4_handle_port_mgmt_change_event, which calls 1080331769Shselasky * this procedure. Therefore, call sl2vl_update directly. 1081331769Shselasky */ 1082331769Shselasky mlx4_ib_sl2vl_update(dev, port_num); 1083331769Shselasky else 1084331769Shselasky mlx4_sched_ib_sl2vl_update_work(dev, port_num); 1085331769Shselasky } 1086255932Salfred mlx4_ib_dispatch_event(dev, port_num, IB_EVENT_CLIENT_REREGISTER); 1087255932Salfred} 1088255932Salfred 1089255932Salfredstatic void propagate_pkey_ev(struct mlx4_ib_dev *dev, int port_num, 1090255932Salfred struct mlx4_eqe *eqe) 1091255932Salfred{ 1092255932Salfred __propagate_pkey_ev(dev, port_num, GET_BLK_PTR_FROM_EQE(eqe), 1093255932Salfred GET_MASK_FROM_EQE(eqe)); 1094255932Salfred} 1095255932Salfred 1096255932Salfredstatic void handle_slaves_guid_change(struct mlx4_ib_dev *dev, u8 port_num, 1097255932Salfred u32 guid_tbl_blk_num, u32 change_bitmap) 1098255932Salfred{ 1099255932Salfred struct ib_smp *in_mad = NULL; 1100255932Salfred struct ib_smp *out_mad = NULL; 1101255932Salfred u16 i; 1102255932Salfred 1103255932Salfred if (!mlx4_is_mfunc(dev->dev) || !mlx4_is_master(dev->dev)) 1104255932Salfred return; 1105255932Salfred 1106255932Salfred in_mad = kmalloc(sizeof *in_mad, GFP_KERNEL); 1107255932Salfred out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 1108255932Salfred if (!in_mad || !out_mad) { 1109255932Salfred mlx4_ib_warn(&dev->ib_dev, "failed to allocate memory for guid info mads\n"); 1110255932Salfred goto out; 1111255932Salfred } 1112255932Salfred 1113255932Salfred guid_tbl_blk_num *= 4; 1114255932Salfred 1115255932Salfred for (i = 0; i < 4; i++) { 1116255932Salfred if (change_bitmap && (!((change_bitmap >> (8 * i)) & 0xff))) 1117255932Salfred continue; 1118255932Salfred memset(in_mad, 0, sizeof *in_mad); 1119255932Salfred memset(out_mad, 0, sizeof *out_mad); 1120255932Salfred 1121255932Salfred in_mad->base_version = 1; 1122255932Salfred in_mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 1123255932Salfred in_mad->class_version = 1; 1124255932Salfred in_mad->method = IB_MGMT_METHOD_GET; 1125255932Salfred in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 1126255932Salfred in_mad->attr_mod = cpu_to_be32(guid_tbl_blk_num + i); 1127255932Salfred 1128255932Salfred if (mlx4_MAD_IFC(dev, 1129255932Salfred MLX4_MAD_IFC_IGNORE_KEYS | MLX4_MAD_IFC_NET_VIEW, 1130255932Salfred port_num, NULL, NULL, in_mad, out_mad)) { 1131255932Salfred mlx4_ib_warn(&dev->ib_dev, "Failed in get GUID INFO MAD_IFC\n"); 1132255932Salfred goto out; 1133255932Salfred } 1134255932Salfred 1135255932Salfred mlx4_ib_update_cache_on_guid_change(dev, guid_tbl_blk_num + i, 1136255932Salfred port_num, 1137255932Salfred (u8 *)(&((struct ib_smp *)out_mad)->data)); 1138255932Salfred mlx4_ib_notify_slaves_on_guid_change(dev, guid_tbl_blk_num + i, 1139255932Salfred port_num, 1140255932Salfred (u8 *)(&((struct ib_smp *)out_mad)->data)); 1141255932Salfred } 1142255932Salfred 1143255932Salfredout: 1144255932Salfred kfree(in_mad); 1145255932Salfred kfree(out_mad); 1146255932Salfred return; 1147255932Salfred} 1148255932Salfred 1149255932Salfredvoid handle_port_mgmt_change_event(struct work_struct *work) 1150255932Salfred{ 1151255932Salfred struct ib_event_work *ew = container_of(work, struct ib_event_work, work); 1152255932Salfred struct mlx4_ib_dev *dev = ew->ib_dev; 1153255932Salfred struct mlx4_eqe *eqe = &(ew->ib_eqe); 1154255932Salfred u8 port = eqe->event.port_mgmt_change.port; 1155255932Salfred u32 changed_attr; 1156255932Salfred u32 tbl_block; 1157255932Salfred u32 change_bitmap; 1158255932Salfred 1159255932Salfred switch (eqe->subtype) { 1160255932Salfred case MLX4_DEV_PMC_SUBTYPE_PORT_INFO: 1161255932Salfred changed_attr = be32_to_cpu(eqe->event.port_mgmt_change.params.port_info.changed_attr); 1162255932Salfred 1163255932Salfred /* Update the SM ah - This should be done before handling 1164255932Salfred the other changed attributes so that MADs can be sent to the SM */ 1165255932Salfred if (changed_attr & MSTR_SM_CHANGE_MASK) { 1166255932Salfred u16 lid = be16_to_cpu(eqe->event.port_mgmt_change.params.port_info.mstr_sm_lid); 1167255932Salfred u8 sl = eqe->event.port_mgmt_change.params.port_info.mstr_sm_sl & 0xf; 1168255932Salfred update_sm_ah(dev, port, lid, sl); 1169255932Salfred } 1170255932Salfred 1171255932Salfred /* Check if it is a lid change event */ 1172255932Salfred if (changed_attr & MLX4_EQ_PORT_INFO_LID_CHANGE_MASK) 1173255932Salfred handle_lid_change_event(dev, port); 1174255932Salfred 1175255932Salfred /* Generate GUID changed event */ 1176255932Salfred if (changed_attr & MLX4_EQ_PORT_INFO_GID_PFX_CHANGE_MASK) { 1177331769Shselasky if (mlx4_is_master(dev->dev)) { 1178331769Shselasky union ib_gid gid; 1179331769Shselasky int err = 0; 1180331769Shselasky 1181331769Shselasky if (!eqe->event.port_mgmt_change.params.port_info.gid_prefix) 1182331769Shselasky err = __mlx4_ib_query_gid(&dev->ib_dev, port, 0, &gid, 1); 1183331769Shselasky else 1184331769Shselasky gid.global.subnet_prefix = 1185331769Shselasky eqe->event.port_mgmt_change.params.port_info.gid_prefix; 1186331769Shselasky if (err) { 1187331769Shselasky pr_warn("Could not change QP1 subnet prefix for port %d: query_gid error (%d)\n", 1188331769Shselasky port, err); 1189331769Shselasky } else { 1190331769Shselasky pr_debug("Changing QP1 subnet prefix for port %d. old=0x%llx. new=0x%llx\n", 1191331769Shselasky port, 1192331769Shselasky (long long)atomic64_read(&dev->sriov.demux[port - 1].subnet_prefix), 1193331769Shselasky (long long)be64_to_cpu(gid.global.subnet_prefix)); 1194331769Shselasky atomic64_set(&dev->sriov.demux[port - 1].subnet_prefix, 1195331769Shselasky be64_to_cpu(gid.global.subnet_prefix)); 1196331769Shselasky } 1197331769Shselasky } 1198255932Salfred mlx4_ib_dispatch_event(dev, port, IB_EVENT_GID_CHANGE); 1199255932Salfred /*if master, notify all slaves*/ 1200255932Salfred if (mlx4_is_master(dev->dev)) 1201255932Salfred mlx4_gen_slaves_port_mgt_ev(dev->dev, port, 1202329159Shselasky MLX4_EQ_PORT_INFO_GID_PFX_CHANGE_MASK); 1203255932Salfred } 1204255932Salfred 1205255932Salfred if (changed_attr & MLX4_EQ_PORT_INFO_CLIENT_REREG_MASK) 1206255932Salfred handle_client_rereg_event(dev, port); 1207255932Salfred break; 1208255932Salfred 1209255932Salfred case MLX4_DEV_PMC_SUBTYPE_PKEY_TABLE: 1210255932Salfred mlx4_ib_dispatch_event(dev, port, IB_EVENT_PKEY_CHANGE); 1211255932Salfred if (mlx4_is_master(dev->dev) && !dev->sriov.is_going_down) 1212255932Salfred propagate_pkey_ev(dev, port, eqe); 1213255932Salfred break; 1214255932Salfred case MLX4_DEV_PMC_SUBTYPE_GUID_INFO: 1215255932Salfred /* paravirtualized master's guid is guid 0 -- does not change */ 1216255932Salfred if (!mlx4_is_master(dev->dev)) 1217255932Salfred mlx4_ib_dispatch_event(dev, port, IB_EVENT_GID_CHANGE); 1218255932Salfred /*if master, notify relevant slaves*/ 1219255932Salfred else if (!dev->sriov.is_going_down) { 1220255932Salfred tbl_block = GET_BLK_PTR_FROM_EQE(eqe); 1221255932Salfred change_bitmap = GET_MASK_FROM_EQE(eqe); 1222255932Salfred handle_slaves_guid_change(dev, port, tbl_block, change_bitmap); 1223255932Salfred } 1224255932Salfred break; 1225331769Shselasky 1226331769Shselasky case MLX4_DEV_PMC_SUBTYPE_SL_TO_VL_MAP: 1227331769Shselasky /* cache sl to vl mapping changes for use in 1228331769Shselasky * filling QP1 LRH VL field when sending packets 1229331769Shselasky */ 1230331769Shselasky if (!mlx4_is_slave(dev->dev)) { 1231331769Shselasky union sl2vl_tbl_to_u64 sl2vl64; 1232331769Shselasky int jj; 1233331769Shselasky 1234331769Shselasky for (jj = 0; jj < 8; jj++) { 1235331769Shselasky sl2vl64.sl8[jj] = 1236331769Shselasky eqe->event.port_mgmt_change.params.sl2vl_tbl_change_info.sl2vl_table[jj]; 1237331769Shselasky pr_debug("sl2vl[%d] = %02x\n", jj, sl2vl64.sl8[jj]); 1238331769Shselasky } 1239331769Shselasky atomic64_set(&dev->sl2vl[port - 1], sl2vl64.sl64); 1240331769Shselasky } 1241331769Shselasky break; 1242255932Salfred default: 1243255932Salfred pr_warn("Unsupported subtype 0x%x for " 1244255932Salfred "Port Management Change event\n", eqe->subtype); 1245255932Salfred } 1246255932Salfred 1247255932Salfred kfree(ew); 1248255932Salfred} 1249255932Salfred 1250255932Salfredvoid mlx4_ib_dispatch_event(struct mlx4_ib_dev *dev, u8 port_num, 1251255932Salfred enum ib_event_type type) 1252255932Salfred{ 1253255932Salfred struct ib_event event; 1254255932Salfred 1255255932Salfred event.device = &dev->ib_dev; 1256255932Salfred event.element.port_num = port_num; 1257255932Salfred event.event = type; 1258255932Salfred 1259255932Salfred ib_dispatch_event(&event); 1260255932Salfred} 1261255932Salfred 1262255932Salfredstatic void mlx4_ib_tunnel_comp_handler(struct ib_cq *cq, void *arg) 1263255932Salfred{ 1264255932Salfred unsigned long flags; 1265255932Salfred struct mlx4_ib_demux_pv_ctx *ctx = cq->cq_context; 1266255932Salfred struct mlx4_ib_dev *dev = to_mdev(ctx->ib_dev); 1267255932Salfred spin_lock_irqsave(&dev->sriov.going_down_lock, flags); 1268255932Salfred if (!dev->sriov.is_going_down && ctx->state == DEMUX_PV_STATE_ACTIVE) 1269255932Salfred queue_work(ctx->wq, &ctx->work); 1270255932Salfred spin_unlock_irqrestore(&dev->sriov.going_down_lock, flags); 1271255932Salfred} 1272255932Salfred 1273255932Salfredstatic int mlx4_ib_post_pv_qp_buf(struct mlx4_ib_demux_pv_ctx *ctx, 1274255932Salfred struct mlx4_ib_demux_pv_qp *tun_qp, 1275255932Salfred int index) 1276255932Salfred{ 1277255932Salfred struct ib_sge sg_list; 1278255932Salfred struct ib_recv_wr recv_wr, *bad_recv_wr; 1279255932Salfred int size; 1280255932Salfred 1281255932Salfred size = (tun_qp->qp->qp_type == IB_QPT_UD) ? 1282255932Salfred sizeof (struct mlx4_tunnel_mad) : sizeof (struct mlx4_mad_rcv_buf); 1283255932Salfred 1284255932Salfred sg_list.addr = tun_qp->ring[index].map; 1285255932Salfred sg_list.length = size; 1286331769Shselasky sg_list.lkey = ctx->pd->local_dma_lkey; 1287255932Salfred 1288255932Salfred recv_wr.next = NULL; 1289255932Salfred recv_wr.sg_list = &sg_list; 1290255932Salfred recv_wr.num_sge = 1; 1291255932Salfred recv_wr.wr_id = (u64) index | MLX4_TUN_WRID_RECV | 1292255932Salfred MLX4_TUN_SET_WRID_QPN(tun_qp->proxy_qpt); 1293255932Salfred ib_dma_sync_single_for_device(ctx->ib_dev, tun_qp->ring[index].map, 1294255932Salfred size, DMA_FROM_DEVICE); 1295255932Salfred return ib_post_recv(tun_qp->qp, &recv_wr, &bad_recv_wr); 1296255932Salfred} 1297255932Salfred 1298255932Salfredstatic int mlx4_ib_multiplex_sa_handler(struct ib_device *ibdev, int port, 1299255932Salfred int slave, struct ib_sa_mad *sa_mad) 1300255932Salfred{ 1301255932Salfred int ret = 0; 1302255932Salfred 1303255932Salfred /* dispatch to different sa handlers */ 1304255932Salfred switch (be16_to_cpu(sa_mad->mad_hdr.attr_id)) { 1305255932Salfred case IB_SA_ATTR_MC_MEMBER_REC: 1306255932Salfred ret = mlx4_ib_mcg_multiplex_handler(ibdev, port, slave, sa_mad); 1307255932Salfred break; 1308255932Salfred default: 1309255932Salfred break; 1310255932Salfred } 1311255932Salfred return ret; 1312255932Salfred} 1313255932Salfred 1314255932Salfredstatic int is_proxy_qp0(struct mlx4_ib_dev *dev, int qpn, int slave) 1315255932Salfred{ 1316255932Salfred int proxy_start = dev->dev->phys_caps.base_proxy_sqpn + 8 * slave; 1317255932Salfred 1318255932Salfred return (qpn >= proxy_start && qpn <= proxy_start + 1); 1319255932Salfred} 1320255932Salfred 1321255932Salfred 1322255932Salfredint mlx4_ib_send_to_wire(struct mlx4_ib_dev *dev, int slave, u8 port, 1323278886Shselasky enum ib_qp_type dest_qpt, u16 pkey_index, 1324278886Shselasky u32 remote_qpn, u32 qkey, struct ib_ah_attr *attr, 1325331769Shselasky u8 *s_mac, u16 vlan_id, struct ib_mad *mad) 1326255932Salfred{ 1327255932Salfred struct ib_sge list; 1328331769Shselasky struct ib_ud_wr wr; 1329331769Shselasky struct ib_send_wr *bad_wr; 1330255932Salfred struct mlx4_ib_demux_pv_ctx *sqp_ctx; 1331255932Salfred struct mlx4_ib_demux_pv_qp *sqp; 1332255932Salfred struct mlx4_mad_snd_buf *sqp_mad; 1333255932Salfred struct ib_ah *ah; 1334255932Salfred struct ib_qp *send_qp = NULL; 1335255932Salfred unsigned wire_tx_ix = 0; 1336255932Salfred int ret = 0; 1337255932Salfred u16 wire_pkey_ix; 1338255932Salfred int src_qpnum; 1339255932Salfred u8 sgid_index; 1340255932Salfred 1341255932Salfred 1342255932Salfred sqp_ctx = dev->sriov.sqps[port-1]; 1343255932Salfred 1344255932Salfred /* check if proxy qp created */ 1345255932Salfred if (!sqp_ctx || sqp_ctx->state != DEMUX_PV_STATE_ACTIVE) 1346255932Salfred return -EAGAIN; 1347255932Salfred 1348255932Salfred if (dest_qpt == IB_QPT_SMI) { 1349255932Salfred src_qpnum = 0; 1350255932Salfred sqp = &sqp_ctx->qp[0]; 1351255932Salfred wire_pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][0]; 1352255932Salfred } else { 1353255932Salfred src_qpnum = 1; 1354255932Salfred sqp = &sqp_ctx->qp[1]; 1355255932Salfred wire_pkey_ix = dev->pkeys.virt2phys_pkey[slave][port - 1][pkey_index]; 1356255932Salfred } 1357255932Salfred 1358255932Salfred send_qp = sqp->qp; 1359255932Salfred 1360255932Salfred /* create ah */ 1361255932Salfred sgid_index = attr->grh.sgid_index; 1362255932Salfred attr->grh.sgid_index = 0; 1363255932Salfred ah = ib_create_ah(sqp_ctx->pd, attr); 1364255932Salfred if (IS_ERR(ah)) 1365255932Salfred return -ENOMEM; 1366255932Salfred attr->grh.sgid_index = sgid_index; 1367255932Salfred to_mah(ah)->av.ib.gid_index = sgid_index; 1368255932Salfred /* get rid of force-loopback bit */ 1369255932Salfred to_mah(ah)->av.ib.port_pd &= cpu_to_be32(0x7FFFFFFF); 1370255932Salfred spin_lock(&sqp->tx_lock); 1371255932Salfred if (sqp->tx_ix_head - sqp->tx_ix_tail >= 1372255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)) 1373255932Salfred ret = -EAGAIN; 1374255932Salfred else 1375255932Salfred wire_tx_ix = (++sqp->tx_ix_head) & (MLX4_NUM_TUNNEL_BUFS - 1); 1376255932Salfred spin_unlock(&sqp->tx_lock); 1377255932Salfred if (ret) 1378255932Salfred goto out; 1379255932Salfred 1380255932Salfred sqp_mad = (struct mlx4_mad_snd_buf *) (sqp->tx_ring[wire_tx_ix].buf.addr); 1381255932Salfred if (sqp->tx_ring[wire_tx_ix].ah) 1382255932Salfred ib_destroy_ah(sqp->tx_ring[wire_tx_ix].ah); 1383255932Salfred sqp->tx_ring[wire_tx_ix].ah = ah; 1384255932Salfred ib_dma_sync_single_for_cpu(&dev->ib_dev, 1385255932Salfred sqp->tx_ring[wire_tx_ix].buf.map, 1386255932Salfred sizeof (struct mlx4_mad_snd_buf), 1387255932Salfred DMA_TO_DEVICE); 1388255932Salfred 1389255932Salfred memcpy(&sqp_mad->payload, mad, sizeof *mad); 1390255932Salfred 1391255932Salfred ib_dma_sync_single_for_device(&dev->ib_dev, 1392255932Salfred sqp->tx_ring[wire_tx_ix].buf.map, 1393255932Salfred sizeof (struct mlx4_mad_snd_buf), 1394255932Salfred DMA_TO_DEVICE); 1395255932Salfred 1396255932Salfred list.addr = sqp->tx_ring[wire_tx_ix].buf.map; 1397255932Salfred list.length = sizeof (struct mlx4_mad_snd_buf); 1398331769Shselasky list.lkey = sqp_ctx->pd->local_dma_lkey; 1399255932Salfred 1400331769Shselasky wr.ah = ah; 1401331769Shselasky wr.port_num = port; 1402331769Shselasky wr.pkey_index = wire_pkey_ix; 1403331769Shselasky wr.remote_qkey = qkey; 1404331769Shselasky wr.remote_qpn = remote_qpn; 1405331769Shselasky wr.wr.next = NULL; 1406331769Shselasky wr.wr.wr_id = ((u64) wire_tx_ix) | MLX4_TUN_SET_WRID_QPN(src_qpnum); 1407331769Shselasky wr.wr.sg_list = &list; 1408331769Shselasky wr.wr.num_sge = 1; 1409331769Shselasky wr.wr.opcode = IB_WR_SEND; 1410331769Shselasky wr.wr.send_flags = IB_SEND_SIGNALED; 1411278886Shselasky if (s_mac) 1412278886Shselasky memcpy(to_mah(ah)->av.eth.s_mac, s_mac, 6); 1413331769Shselasky if (vlan_id < 0x1000) 1414331769Shselasky vlan_id |= (attr->sl & 7) << 13; 1415331769Shselasky to_mah(ah)->av.eth.vlan = cpu_to_be16(vlan_id); 1416255932Salfred 1417278886Shselasky 1418331769Shselasky ret = ib_post_send(send_qp, &wr.wr, &bad_wr); 1419331769Shselasky if (!ret) 1420331769Shselasky return 0; 1421331769Shselasky 1422331769Shselasky spin_lock(&sqp->tx_lock); 1423331769Shselasky sqp->tx_ix_tail++; 1424331769Shselasky spin_unlock(&sqp->tx_lock); 1425331769Shselasky sqp->tx_ring[wire_tx_ix].ah = NULL; 1426255932Salfredout: 1427331769Shselasky ib_destroy_ah(ah); 1428255932Salfred return ret; 1429255932Salfred} 1430255932Salfred 1431255932Salfredstatic int get_slave_base_gid_ix(struct mlx4_ib_dev *dev, int slave, int port) 1432255932Salfred{ 1433255932Salfred if (rdma_port_get_link_layer(&dev->ib_dev, port) == IB_LINK_LAYER_INFINIBAND) 1434255932Salfred return slave; 1435331769Shselasky return mlx4_get_base_gid_ix(dev->dev, slave, port); 1436255932Salfred} 1437255932Salfred 1438331769Shselaskystatic void fill_in_real_sgid_index(struct mlx4_ib_dev *dev, int slave, int port, 1439331769Shselasky struct ib_ah_attr *ah_attr) 1440255932Salfred{ 1441331769Shselasky if (rdma_port_get_link_layer(&dev->ib_dev, port) == IB_LINK_LAYER_INFINIBAND) 1442255932Salfred ah_attr->grh.sgid_index = slave; 1443331769Shselasky else 1444331769Shselasky ah_attr->grh.sgid_index += get_slave_base_gid_ix(dev, slave, port); 1445255932Salfred} 1446255932Salfred 1447255932Salfredstatic void mlx4_ib_multiplex_mad(struct mlx4_ib_demux_pv_ctx *ctx, struct ib_wc *wc) 1448255932Salfred{ 1449255932Salfred struct mlx4_ib_dev *dev = to_mdev(ctx->ib_dev); 1450255932Salfred struct mlx4_ib_demux_pv_qp *tun_qp = &ctx->qp[MLX4_TUN_WRID_QPN(wc->wr_id)]; 1451255932Salfred int wr_ix = wc->wr_id & (MLX4_NUM_TUNNEL_BUFS - 1); 1452255932Salfred struct mlx4_tunnel_mad *tunnel = tun_qp->ring[wr_ix].addr; 1453255932Salfred struct mlx4_ib_ah ah; 1454255932Salfred struct ib_ah_attr ah_attr; 1455255932Salfred u8 *slave_id; 1456255932Salfred int slave; 1457331769Shselasky int port; 1458331769Shselasky u16 vlan_id; 1459255932Salfred 1460255932Salfred /* Get slave that sent this packet */ 1461255932Salfred if (wc->src_qp < dev->dev->phys_caps.base_proxy_sqpn || 1462255932Salfred wc->src_qp >= dev->dev->phys_caps.base_proxy_sqpn + 8 * MLX4_MFUNC_MAX || 1463255932Salfred (wc->src_qp & 0x1) != ctx->port - 1 || 1464255932Salfred wc->src_qp & 0x4) { 1465255932Salfred mlx4_ib_warn(ctx->ib_dev, "can't multiplex bad sqp:%d\n", wc->src_qp); 1466255932Salfred return; 1467255932Salfred } 1468255932Salfred slave = ((wc->src_qp & ~0x7) - dev->dev->phys_caps.base_proxy_sqpn) / 8; 1469255932Salfred if (slave != ctx->slave) { 1470255932Salfred mlx4_ib_warn(ctx->ib_dev, "can't multiplex bad sqp:%d: " 1471255932Salfred "belongs to another slave\n", wc->src_qp); 1472255932Salfred return; 1473255932Salfred } 1474255932Salfred 1475255932Salfred /* Map transaction ID */ 1476255932Salfred ib_dma_sync_single_for_cpu(ctx->ib_dev, tun_qp->ring[wr_ix].map, 1477255932Salfred sizeof (struct mlx4_tunnel_mad), 1478255932Salfred DMA_FROM_DEVICE); 1479255932Salfred switch (tunnel->mad.mad_hdr.method) { 1480255932Salfred case IB_MGMT_METHOD_SET: 1481255932Salfred case IB_MGMT_METHOD_GET: 1482255932Salfred case IB_MGMT_METHOD_REPORT: 1483255932Salfred case IB_SA_METHOD_GET_TABLE: 1484255932Salfred case IB_SA_METHOD_DELETE: 1485255932Salfred case IB_SA_METHOD_GET_MULTI: 1486255932Salfred case IB_SA_METHOD_GET_TRACE_TBL: 1487255932Salfred slave_id = (u8 *) &tunnel->mad.mad_hdr.tid; 1488255932Salfred if (*slave_id) { 1489255932Salfred mlx4_ib_warn(ctx->ib_dev, "egress mad has non-null tid msb:%d " 1490255932Salfred "class:%d slave:%d\n", *slave_id, 1491255932Salfred tunnel->mad.mad_hdr.mgmt_class, slave); 1492255932Salfred return; 1493255932Salfred } else 1494255932Salfred *slave_id = slave; 1495255932Salfred default: 1496255932Salfred /* nothing */; 1497255932Salfred } 1498255932Salfred 1499255932Salfred /* Class-specific handling */ 1500255932Salfred switch (tunnel->mad.mad_hdr.mgmt_class) { 1501331769Shselasky case IB_MGMT_CLASS_SUBN_LID_ROUTED: 1502331769Shselasky case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: 1503331769Shselasky if (slave != mlx4_master_func_num(dev->dev) && 1504331769Shselasky !mlx4_vf_smi_enabled(dev->dev, slave, ctx->port)) 1505331769Shselasky return; 1506331769Shselasky break; 1507255932Salfred case IB_MGMT_CLASS_SUBN_ADM: 1508255932Salfred if (mlx4_ib_multiplex_sa_handler(ctx->ib_dev, ctx->port, slave, 1509255932Salfred (struct ib_sa_mad *) &tunnel->mad)) 1510255932Salfred return; 1511255932Salfred break; 1512255932Salfred case IB_MGMT_CLASS_CM: 1513255932Salfred if (mlx4_ib_multiplex_cm_handler(ctx->ib_dev, ctx->port, slave, 1514255932Salfred (struct ib_mad *) &tunnel->mad)) 1515255932Salfred return; 1516255932Salfred break; 1517255932Salfred case IB_MGMT_CLASS_DEVICE_MGMT: 1518255932Salfred if (tunnel->mad.mad_hdr.method != IB_MGMT_METHOD_GET && 1519255932Salfred tunnel->mad.mad_hdr.method != IB_MGMT_METHOD_SET) 1520255932Salfred return; 1521255932Salfred break; 1522255932Salfred default: 1523255932Salfred /* Drop unsupported classes for slaves in tunnel mode */ 1524255932Salfred if (slave != mlx4_master_func_num(dev->dev)) { 1525255932Salfred mlx4_ib_warn(ctx->ib_dev, "dropping unsupported egress mad from class:%d " 1526255932Salfred "for slave:%d\n", tunnel->mad.mad_hdr.mgmt_class, slave); 1527255932Salfred return; 1528255932Salfred } 1529255932Salfred } 1530255932Salfred 1531255932Salfred /* We are using standard ib_core services to send the mad, so generate a 1532255932Salfred * stadard address handle by decoding the tunnelled mlx4_ah fields */ 1533255932Salfred memcpy(&ah.av, &tunnel->hdr.av, sizeof (struct mlx4_av)); 1534255932Salfred ah.ibah.device = ctx->ib_dev; 1535331769Shselasky 1536331769Shselasky port = be32_to_cpu(ah.av.ib.port_pd) >> 24; 1537331769Shselasky port = mlx4_slave_convert_port(dev->dev, slave, port); 1538331769Shselasky if (port < 0) 1539331769Shselasky return; 1540331769Shselasky ah.av.ib.port_pd = cpu_to_be32(port << 24 | (be32_to_cpu(ah.av.ib.port_pd) & 0xffffff)); 1541331769Shselasky 1542255932Salfred mlx4_ib_query_ah(&ah.ibah, &ah_attr); 1543255932Salfred if (ah_attr.ah_flags & IB_AH_GRH) 1544331769Shselasky fill_in_real_sgid_index(dev, slave, ctx->port, &ah_attr); 1545331769Shselasky 1546278886Shselasky memcpy(ah_attr.dmac, tunnel->hdr.mac, 6); 1547331769Shselasky vlan_id = be16_to_cpu(tunnel->hdr.vlan); 1548278886Shselasky /* if slave have default vlan use it */ 1549278886Shselasky mlx4_get_slave_default_vlan(dev->dev, ctx->port, slave, 1550331769Shselasky &vlan_id, &ah_attr.sl); 1551255932Salfred 1552255932Salfred mlx4_ib_send_to_wire(dev, slave, ctx->port, 1553255932Salfred is_proxy_qp0(dev, wc->src_qp, slave) ? 1554255932Salfred IB_QPT_SMI : IB_QPT_GSI, 1555255932Salfred be16_to_cpu(tunnel->hdr.pkey_index), 1556255932Salfred be32_to_cpu(tunnel->hdr.remote_qpn), 1557255932Salfred be32_to_cpu(tunnel->hdr.qkey), 1558331769Shselasky &ah_attr, wc->smac, vlan_id, &tunnel->mad); 1559255932Salfred} 1560255932Salfred 1561255932Salfredstatic int mlx4_ib_alloc_pv_bufs(struct mlx4_ib_demux_pv_ctx *ctx, 1562255932Salfred enum ib_qp_type qp_type, int is_tun) 1563255932Salfred{ 1564255932Salfred int i; 1565255932Salfred struct mlx4_ib_demux_pv_qp *tun_qp; 1566255932Salfred int rx_buf_size, tx_buf_size; 1567255932Salfred 1568255932Salfred if (qp_type > IB_QPT_GSI) 1569255932Salfred return -EINVAL; 1570255932Salfred 1571255932Salfred tun_qp = &ctx->qp[qp_type]; 1572255932Salfred 1573255932Salfred tun_qp->ring = kzalloc(sizeof (struct mlx4_ib_buf) * MLX4_NUM_TUNNEL_BUFS, 1574255932Salfred GFP_KERNEL); 1575255932Salfred if (!tun_qp->ring) 1576255932Salfred return -ENOMEM; 1577255932Salfred 1578255932Salfred tun_qp->tx_ring = kcalloc(MLX4_NUM_TUNNEL_BUFS, 1579255932Salfred sizeof (struct mlx4_ib_tun_tx_buf), 1580255932Salfred GFP_KERNEL); 1581255932Salfred if (!tun_qp->tx_ring) { 1582255932Salfred kfree(tun_qp->ring); 1583255932Salfred tun_qp->ring = NULL; 1584255932Salfred return -ENOMEM; 1585255932Salfred } 1586255932Salfred 1587255932Salfred if (is_tun) { 1588255932Salfred rx_buf_size = sizeof (struct mlx4_tunnel_mad); 1589255932Salfred tx_buf_size = sizeof (struct mlx4_rcv_tunnel_mad); 1590255932Salfred } else { 1591255932Salfred rx_buf_size = sizeof (struct mlx4_mad_rcv_buf); 1592255932Salfred tx_buf_size = sizeof (struct mlx4_mad_snd_buf); 1593255932Salfred } 1594255932Salfred 1595255932Salfred for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { 1596255932Salfred tun_qp->ring[i].addr = kmalloc(rx_buf_size, GFP_KERNEL); 1597255932Salfred if (!tun_qp->ring[i].addr) 1598255932Salfred goto err; 1599255932Salfred tun_qp->ring[i].map = ib_dma_map_single(ctx->ib_dev, 1600255932Salfred tun_qp->ring[i].addr, 1601255932Salfred rx_buf_size, 1602255932Salfred DMA_FROM_DEVICE); 1603331769Shselasky if (ib_dma_mapping_error(ctx->ib_dev, tun_qp->ring[i].map)) { 1604278886Shselasky kfree(tun_qp->ring[i].addr); 1605278886Shselasky goto err; 1606278886Shselasky } 1607255932Salfred } 1608255932Salfred 1609255932Salfred for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { 1610255932Salfred tun_qp->tx_ring[i].buf.addr = 1611255932Salfred kmalloc(tx_buf_size, GFP_KERNEL); 1612255932Salfred if (!tun_qp->tx_ring[i].buf.addr) 1613255932Salfred goto tx_err; 1614255932Salfred tun_qp->tx_ring[i].buf.map = 1615255932Salfred ib_dma_map_single(ctx->ib_dev, 1616255932Salfred tun_qp->tx_ring[i].buf.addr, 1617255932Salfred tx_buf_size, 1618255932Salfred DMA_TO_DEVICE); 1619331769Shselasky if (ib_dma_mapping_error(ctx->ib_dev, 1620331769Shselasky tun_qp->tx_ring[i].buf.map)) { 1621278886Shselasky kfree(tun_qp->tx_ring[i].buf.addr); 1622278886Shselasky goto tx_err; 1623278886Shselasky } 1624255932Salfred tun_qp->tx_ring[i].ah = NULL; 1625255932Salfred } 1626255932Salfred spin_lock_init(&tun_qp->tx_lock); 1627255932Salfred tun_qp->tx_ix_head = 0; 1628255932Salfred tun_qp->tx_ix_tail = 0; 1629255932Salfred tun_qp->proxy_qpt = qp_type; 1630255932Salfred 1631255932Salfred return 0; 1632255932Salfred 1633255932Salfredtx_err: 1634255932Salfred while (i > 0) { 1635255932Salfred --i; 1636255932Salfred ib_dma_unmap_single(ctx->ib_dev, tun_qp->tx_ring[i].buf.map, 1637255932Salfred tx_buf_size, DMA_TO_DEVICE); 1638255932Salfred kfree(tun_qp->tx_ring[i].buf.addr); 1639255932Salfred } 1640255932Salfred kfree(tun_qp->tx_ring); 1641255932Salfred tun_qp->tx_ring = NULL; 1642255932Salfred i = MLX4_NUM_TUNNEL_BUFS; 1643255932Salfrederr: 1644255932Salfred while (i > 0) { 1645255932Salfred --i; 1646255932Salfred ib_dma_unmap_single(ctx->ib_dev, tun_qp->ring[i].map, 1647255932Salfred rx_buf_size, DMA_FROM_DEVICE); 1648255932Salfred kfree(tun_qp->ring[i].addr); 1649255932Salfred } 1650255932Salfred kfree(tun_qp->ring); 1651255932Salfred tun_qp->ring = NULL; 1652255932Salfred return -ENOMEM; 1653255932Salfred} 1654255932Salfred 1655255932Salfredstatic void mlx4_ib_free_pv_qp_bufs(struct mlx4_ib_demux_pv_ctx *ctx, 1656255932Salfred enum ib_qp_type qp_type, int is_tun) 1657255932Salfred{ 1658255932Salfred int i; 1659255932Salfred struct mlx4_ib_demux_pv_qp *tun_qp; 1660255932Salfred int rx_buf_size, tx_buf_size; 1661255932Salfred 1662255932Salfred if (qp_type > IB_QPT_GSI) 1663255932Salfred return; 1664255932Salfred 1665255932Salfred tun_qp = &ctx->qp[qp_type]; 1666255932Salfred if (is_tun) { 1667255932Salfred rx_buf_size = sizeof (struct mlx4_tunnel_mad); 1668255932Salfred tx_buf_size = sizeof (struct mlx4_rcv_tunnel_mad); 1669255932Salfred } else { 1670255932Salfred rx_buf_size = sizeof (struct mlx4_mad_rcv_buf); 1671255932Salfred tx_buf_size = sizeof (struct mlx4_mad_snd_buf); 1672255932Salfred } 1673255932Salfred 1674255932Salfred 1675255932Salfred for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { 1676255932Salfred ib_dma_unmap_single(ctx->ib_dev, tun_qp->ring[i].map, 1677255932Salfred rx_buf_size, DMA_FROM_DEVICE); 1678255932Salfred kfree(tun_qp->ring[i].addr); 1679255932Salfred } 1680255932Salfred 1681255932Salfred for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { 1682255932Salfred ib_dma_unmap_single(ctx->ib_dev, tun_qp->tx_ring[i].buf.map, 1683255932Salfred tx_buf_size, DMA_TO_DEVICE); 1684255932Salfred kfree(tun_qp->tx_ring[i].buf.addr); 1685255932Salfred if (tun_qp->tx_ring[i].ah) 1686255932Salfred ib_destroy_ah(tun_qp->tx_ring[i].ah); 1687255932Salfred } 1688255932Salfred kfree(tun_qp->tx_ring); 1689255932Salfred kfree(tun_qp->ring); 1690255932Salfred} 1691255932Salfred 1692255932Salfredstatic void mlx4_ib_tunnel_comp_worker(struct work_struct *work) 1693255932Salfred{ 1694255932Salfred struct mlx4_ib_demux_pv_ctx *ctx; 1695255932Salfred struct mlx4_ib_demux_pv_qp *tun_qp; 1696255932Salfred struct ib_wc wc; 1697255932Salfred int ret; 1698255932Salfred ctx = container_of(work, struct mlx4_ib_demux_pv_ctx, work); 1699255932Salfred ib_req_notify_cq(ctx->cq, IB_CQ_NEXT_COMP); 1700255932Salfred 1701255932Salfred while (ib_poll_cq(ctx->cq, 1, &wc) == 1) { 1702255932Salfred tun_qp = &ctx->qp[MLX4_TUN_WRID_QPN(wc.wr_id)]; 1703255932Salfred if (wc.status == IB_WC_SUCCESS) { 1704255932Salfred switch (wc.opcode) { 1705255932Salfred case IB_WC_RECV: 1706255932Salfred mlx4_ib_multiplex_mad(ctx, &wc); 1707255932Salfred ret = mlx4_ib_post_pv_qp_buf(ctx, tun_qp, 1708255932Salfred wc.wr_id & 1709255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)); 1710255932Salfred if (ret) 1711255932Salfred pr_err("Failed reposting tunnel " 1712278886Shselasky "buf:%lld\n", (unsigned long long)wc.wr_id); 1713255932Salfred break; 1714255932Salfred case IB_WC_SEND: 1715255932Salfred pr_debug("received tunnel send completion:" 1716255932Salfred "wrid=0x%llx, status=0x%x\n", 1717278886Shselasky (unsigned long long)wc.wr_id, wc.status); 1718255932Salfred ib_destroy_ah(tun_qp->tx_ring[wc.wr_id & 1719255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)].ah); 1720255932Salfred tun_qp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah 1721255932Salfred = NULL; 1722255932Salfred spin_lock(&tun_qp->tx_lock); 1723255932Salfred tun_qp->tx_ix_tail++; 1724255932Salfred spin_unlock(&tun_qp->tx_lock); 1725255932Salfred 1726255932Salfred break; 1727255932Salfred default: 1728255932Salfred break; 1729255932Salfred } 1730255932Salfred } else { 1731255932Salfred pr_debug("mlx4_ib: completion error in tunnel: %d." 1732255932Salfred " status = %d, wrid = 0x%llx\n", 1733278886Shselasky ctx->slave, wc.status, (unsigned long long)wc.wr_id); 1734255932Salfred if (!MLX4_TUN_IS_RECV(wc.wr_id)) { 1735255932Salfred ib_destroy_ah(tun_qp->tx_ring[wc.wr_id & 1736255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)].ah); 1737255932Salfred tun_qp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah 1738255932Salfred = NULL; 1739255932Salfred spin_lock(&tun_qp->tx_lock); 1740255932Salfred tun_qp->tx_ix_tail++; 1741255932Salfred spin_unlock(&tun_qp->tx_lock); 1742255932Salfred } 1743255932Salfred } 1744255932Salfred } 1745255932Salfred} 1746255932Salfred 1747255932Salfredstatic void pv_qp_event_handler(struct ib_event *event, void *qp_context) 1748255932Salfred{ 1749255932Salfred struct mlx4_ib_demux_pv_ctx *sqp = qp_context; 1750255932Salfred 1751255932Salfred /* It's worse than that! He's dead, Jim! */ 1752255932Salfred pr_err("Fatal error (%d) on a MAD QP on port %d\n", 1753255932Salfred event->event, sqp->port); 1754255932Salfred} 1755255932Salfred 1756255932Salfredstatic int create_pv_sqp(struct mlx4_ib_demux_pv_ctx *ctx, 1757255932Salfred enum ib_qp_type qp_type, int create_tun) 1758255932Salfred{ 1759255932Salfred int i, ret; 1760255932Salfred struct mlx4_ib_demux_pv_qp *tun_qp; 1761255932Salfred struct mlx4_ib_qp_tunnel_init_attr qp_init_attr; 1762255932Salfred struct ib_qp_attr attr; 1763255932Salfred int qp_attr_mask_INIT; 1764255932Salfred 1765255932Salfred if (qp_type > IB_QPT_GSI) 1766255932Salfred return -EINVAL; 1767255932Salfred 1768255932Salfred tun_qp = &ctx->qp[qp_type]; 1769255932Salfred 1770255932Salfred memset(&qp_init_attr, 0, sizeof qp_init_attr); 1771255932Salfred qp_init_attr.init_attr.send_cq = ctx->cq; 1772255932Salfred qp_init_attr.init_attr.recv_cq = ctx->cq; 1773255932Salfred qp_init_attr.init_attr.sq_sig_type = IB_SIGNAL_ALL_WR; 1774255932Salfred qp_init_attr.init_attr.cap.max_send_wr = MLX4_NUM_TUNNEL_BUFS; 1775255932Salfred qp_init_attr.init_attr.cap.max_recv_wr = MLX4_NUM_TUNNEL_BUFS; 1776255932Salfred qp_init_attr.init_attr.cap.max_send_sge = 1; 1777255932Salfred qp_init_attr.init_attr.cap.max_recv_sge = 1; 1778255932Salfred if (create_tun) { 1779255932Salfred qp_init_attr.init_attr.qp_type = IB_QPT_UD; 1780331769Shselasky qp_init_attr.init_attr.create_flags = 1781331769Shselasky (enum ib_qp_create_flags)MLX4_IB_SRIOV_TUNNEL_QP; 1782255932Salfred qp_init_attr.port = ctx->port; 1783255932Salfred qp_init_attr.slave = ctx->slave; 1784255932Salfred qp_init_attr.proxy_qp_type = qp_type; 1785255932Salfred qp_attr_mask_INIT = IB_QP_STATE | IB_QP_PKEY_INDEX | 1786255932Salfred IB_QP_QKEY | IB_QP_PORT; 1787255932Salfred } else { 1788255932Salfred qp_init_attr.init_attr.qp_type = qp_type; 1789331769Shselasky qp_init_attr.init_attr.create_flags = 1790331769Shselasky (enum ib_qp_create_flags)MLX4_IB_SRIOV_SQP; 1791255932Salfred qp_attr_mask_INIT = IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_QKEY; 1792255932Salfred } 1793255932Salfred qp_init_attr.init_attr.port_num = ctx->port; 1794255932Salfred qp_init_attr.init_attr.qp_context = ctx; 1795255932Salfred qp_init_attr.init_attr.event_handler = pv_qp_event_handler; 1796255932Salfred tun_qp->qp = ib_create_qp(ctx->pd, &qp_init_attr.init_attr); 1797255932Salfred if (IS_ERR(tun_qp->qp)) { 1798255932Salfred ret = PTR_ERR(tun_qp->qp); 1799255932Salfred tun_qp->qp = NULL; 1800255932Salfred pr_err("Couldn't create %s QP (%d)\n", 1801255932Salfred create_tun ? "tunnel" : "special", ret); 1802255932Salfred return ret; 1803255932Salfred } 1804255932Salfred 1805255932Salfred memset(&attr, 0, sizeof attr); 1806255932Salfred attr.qp_state = IB_QPS_INIT; 1807278886Shselasky ret = 0; 1808278886Shselasky if (create_tun) 1809278886Shselasky ret = find_slave_port_pkey_ix(to_mdev(ctx->ib_dev), ctx->slave, 1810331769Shselasky ctx->port, IB_DEFAULT_PKEY_FULL, 1811331769Shselasky &attr.pkey_index); 1812278886Shselasky if (ret || !create_tun) 1813296382Shselasky attr.pkey_index = 1814296382Shselasky to_mdev(ctx->ib_dev)->pkeys.virt2phys_pkey[ctx->slave][ctx->port - 1][0]; 1815255932Salfred attr.qkey = IB_QP1_QKEY; 1816255932Salfred attr.port_num = ctx->port; 1817255932Salfred ret = ib_modify_qp(tun_qp->qp, &attr, qp_attr_mask_INIT); 1818255932Salfred if (ret) { 1819255932Salfred pr_err("Couldn't change %s qp state to INIT (%d)\n", 1820255932Salfred create_tun ? "tunnel" : "special", ret); 1821255932Salfred goto err_qp; 1822255932Salfred } 1823255932Salfred attr.qp_state = IB_QPS_RTR; 1824255932Salfred ret = ib_modify_qp(tun_qp->qp, &attr, IB_QP_STATE); 1825255932Salfred if (ret) { 1826255932Salfred pr_err("Couldn't change %s qp state to RTR (%d)\n", 1827255932Salfred create_tun ? "tunnel" : "special", ret); 1828255932Salfred goto err_qp; 1829255932Salfred } 1830255932Salfred attr.qp_state = IB_QPS_RTS; 1831255932Salfred attr.sq_psn = 0; 1832255932Salfred ret = ib_modify_qp(tun_qp->qp, &attr, IB_QP_STATE | IB_QP_SQ_PSN); 1833255932Salfred if (ret) { 1834255932Salfred pr_err("Couldn't change %s qp state to RTS (%d)\n", 1835255932Salfred create_tun ? "tunnel" : "special", ret); 1836255932Salfred goto err_qp; 1837255932Salfred } 1838255932Salfred 1839255932Salfred for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { 1840255932Salfred ret = mlx4_ib_post_pv_qp_buf(ctx, tun_qp, i); 1841255932Salfred if (ret) { 1842255932Salfred pr_err(" mlx4_ib_post_pv_buf error" 1843255932Salfred " (err = %d, i = %d)\n", ret, i); 1844255932Salfred goto err_qp; 1845255932Salfred } 1846255932Salfred } 1847255932Salfred return 0; 1848255932Salfred 1849255932Salfrederr_qp: 1850255932Salfred ib_destroy_qp(tun_qp->qp); 1851255932Salfred tun_qp->qp = NULL; 1852255932Salfred return ret; 1853255932Salfred} 1854255932Salfred 1855255932Salfred/* 1856255932Salfred * IB MAD completion callback for real SQPs 1857255932Salfred */ 1858255932Salfredstatic void mlx4_ib_sqp_comp_worker(struct work_struct *work) 1859255932Salfred{ 1860255932Salfred struct mlx4_ib_demux_pv_ctx *ctx; 1861255932Salfred struct mlx4_ib_demux_pv_qp *sqp; 1862255932Salfred struct ib_wc wc; 1863255932Salfred struct ib_grh *grh; 1864255932Salfred struct ib_mad *mad; 1865255932Salfred 1866255932Salfred ctx = container_of(work, struct mlx4_ib_demux_pv_ctx, work); 1867255932Salfred ib_req_notify_cq(ctx->cq, IB_CQ_NEXT_COMP); 1868255932Salfred 1869255932Salfred while (mlx4_ib_poll_cq(ctx->cq, 1, &wc) == 1) { 1870255932Salfred sqp = &ctx->qp[MLX4_TUN_WRID_QPN(wc.wr_id)]; 1871255932Salfred if (wc.status == IB_WC_SUCCESS) { 1872255932Salfred switch (wc.opcode) { 1873255932Salfred case IB_WC_SEND: 1874255932Salfred ib_destroy_ah(sqp->tx_ring[wc.wr_id & 1875255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)].ah); 1876255932Salfred sqp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah 1877255932Salfred = NULL; 1878255932Salfred spin_lock(&sqp->tx_lock); 1879255932Salfred sqp->tx_ix_tail++; 1880255932Salfred spin_unlock(&sqp->tx_lock); 1881255932Salfred break; 1882255932Salfred case IB_WC_RECV: 1883255932Salfred mad = (struct ib_mad *) &(((struct mlx4_mad_rcv_buf *) 1884255932Salfred (sqp->ring[wc.wr_id & 1885255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)].addr))->payload); 1886255932Salfred grh = &(((struct mlx4_mad_rcv_buf *) 1887255932Salfred (sqp->ring[wc.wr_id & 1888255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)].addr))->grh); 1889255932Salfred mlx4_ib_demux_mad(ctx->ib_dev, ctx->port, &wc, grh, mad); 1890255932Salfred if (mlx4_ib_post_pv_qp_buf(ctx, sqp, wc.wr_id & 1891255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1))) 1892255932Salfred pr_err("Failed reposting SQP " 1893278886Shselasky "buf:%lld\n", (unsigned long long)wc.wr_id); 1894255932Salfred break; 1895255932Salfred default: 1896255932Salfred BUG_ON(1); 1897255932Salfred break; 1898255932Salfred } 1899255932Salfred } else { 1900255932Salfred pr_debug("mlx4_ib: completion error in tunnel: %d." 1901255932Salfred " status = %d, wrid = 0x%llx\n", 1902278886Shselasky ctx->slave, wc.status, (unsigned long long)wc.wr_id); 1903255932Salfred if (!MLX4_TUN_IS_RECV(wc.wr_id)) { 1904255932Salfred ib_destroy_ah(sqp->tx_ring[wc.wr_id & 1905255932Salfred (MLX4_NUM_TUNNEL_BUFS - 1)].ah); 1906255932Salfred sqp->tx_ring[wc.wr_id & (MLX4_NUM_TUNNEL_BUFS - 1)].ah 1907255932Salfred = NULL; 1908255932Salfred spin_lock(&sqp->tx_lock); 1909255932Salfred sqp->tx_ix_tail++; 1910255932Salfred spin_unlock(&sqp->tx_lock); 1911255932Salfred } 1912255932Salfred } 1913255932Salfred } 1914255932Salfred} 1915255932Salfred 1916255932Salfredstatic int alloc_pv_object(struct mlx4_ib_dev *dev, int slave, int port, 1917255932Salfred struct mlx4_ib_demux_pv_ctx **ret_ctx) 1918255932Salfred{ 1919255932Salfred struct mlx4_ib_demux_pv_ctx *ctx; 1920255932Salfred 1921255932Salfred *ret_ctx = NULL; 1922255932Salfred ctx = kzalloc(sizeof (struct mlx4_ib_demux_pv_ctx), GFP_KERNEL); 1923255932Salfred if (!ctx) { 1924255932Salfred pr_err("failed allocating pv resource context " 1925255932Salfred "for port %d, slave %d\n", port, slave); 1926255932Salfred return -ENOMEM; 1927255932Salfred } 1928255932Salfred 1929255932Salfred ctx->ib_dev = &dev->ib_dev; 1930255932Salfred ctx->port = port; 1931255932Salfred ctx->slave = slave; 1932255932Salfred *ret_ctx = ctx; 1933255932Salfred return 0; 1934255932Salfred} 1935255932Salfred 1936255932Salfredstatic void free_pv_object(struct mlx4_ib_dev *dev, int slave, int port) 1937255932Salfred{ 1938255932Salfred if (dev->sriov.demux[port - 1].tun[slave]) { 1939255932Salfred kfree(dev->sriov.demux[port - 1].tun[slave]); 1940255932Salfred dev->sriov.demux[port - 1].tun[slave] = NULL; 1941255932Salfred } 1942255932Salfred} 1943255932Salfred 1944255932Salfredstatic int create_pv_resources(struct ib_device *ibdev, int slave, int port, 1945255932Salfred int create_tun, struct mlx4_ib_demux_pv_ctx *ctx) 1946255932Salfred{ 1947255932Salfred int ret, cq_size; 1948331769Shselasky struct ib_cq_init_attr cq_attr = {}; 1949255932Salfred 1950255932Salfred if (ctx->state != DEMUX_PV_STATE_DOWN) 1951255932Salfred return -EEXIST; 1952255932Salfred 1953255932Salfred ctx->state = DEMUX_PV_STATE_STARTING; 1954331769Shselasky /* have QP0 only if link layer is IB */ 1955331769Shselasky if (rdma_port_get_link_layer(ibdev, ctx->port) == 1956331769Shselasky IB_LINK_LAYER_INFINIBAND) 1957255932Salfred ctx->has_smi = 1; 1958255932Salfred 1959255932Salfred if (ctx->has_smi) { 1960255932Salfred ret = mlx4_ib_alloc_pv_bufs(ctx, IB_QPT_SMI, create_tun); 1961255932Salfred if (ret) { 1962255932Salfred pr_err("Failed allocating qp0 tunnel bufs (%d)\n", ret); 1963255932Salfred goto err_out; 1964255932Salfred } 1965255932Salfred } 1966255932Salfred 1967255932Salfred ret = mlx4_ib_alloc_pv_bufs(ctx, IB_QPT_GSI, create_tun); 1968255932Salfred if (ret) { 1969255932Salfred pr_err("Failed allocating qp1 tunnel bufs (%d)\n", ret); 1970255932Salfred goto err_out_qp0; 1971255932Salfred } 1972255932Salfred 1973255932Salfred cq_size = 2 * MLX4_NUM_TUNNEL_BUFS; 1974255932Salfred if (ctx->has_smi) 1975255932Salfred cq_size *= 2; 1976255932Salfred 1977331769Shselasky cq_attr.cqe = cq_size; 1978255932Salfred ctx->cq = ib_create_cq(ctx->ib_dev, mlx4_ib_tunnel_comp_handler, 1979331769Shselasky NULL, ctx, &cq_attr); 1980255932Salfred if (IS_ERR(ctx->cq)) { 1981255932Salfred ret = PTR_ERR(ctx->cq); 1982255932Salfred pr_err("Couldn't create tunnel CQ (%d)\n", ret); 1983255932Salfred goto err_buf; 1984255932Salfred } 1985255932Salfred 1986331769Shselasky ctx->pd = ib_alloc_pd(ctx->ib_dev, 0); 1987255932Salfred if (IS_ERR(ctx->pd)) { 1988255932Salfred ret = PTR_ERR(ctx->pd); 1989255932Salfred pr_err("Couldn't create tunnel PD (%d)\n", ret); 1990255932Salfred goto err_cq; 1991255932Salfred } 1992255932Salfred 1993255932Salfred if (ctx->has_smi) { 1994255932Salfred ret = create_pv_sqp(ctx, IB_QPT_SMI, create_tun); 1995255932Salfred if (ret) { 1996255932Salfred pr_err("Couldn't create %s QP0 (%d)\n", 1997255932Salfred create_tun ? "tunnel for" : "", ret); 1998331769Shselasky goto err_pd; 1999255932Salfred } 2000255932Salfred } 2001255932Salfred 2002255932Salfred ret = create_pv_sqp(ctx, IB_QPT_GSI, create_tun); 2003255932Salfred if (ret) { 2004255932Salfred pr_err("Couldn't create %s QP1 (%d)\n", 2005255932Salfred create_tun ? "tunnel for" : "", ret); 2006255932Salfred goto err_qp0; 2007255932Salfred } 2008255932Salfred 2009255932Salfred if (create_tun) 2010255932Salfred INIT_WORK(&ctx->work, mlx4_ib_tunnel_comp_worker); 2011255932Salfred else 2012255932Salfred INIT_WORK(&ctx->work, mlx4_ib_sqp_comp_worker); 2013255932Salfred 2014255932Salfred ctx->wq = to_mdev(ibdev)->sriov.demux[port - 1].wq; 2015255932Salfred 2016255932Salfred ret = ib_req_notify_cq(ctx->cq, IB_CQ_NEXT_COMP); 2017255932Salfred if (ret) { 2018255932Salfred pr_err("Couldn't arm tunnel cq (%d)\n", ret); 2019255932Salfred goto err_wq; 2020255932Salfred } 2021255932Salfred ctx->state = DEMUX_PV_STATE_ACTIVE; 2022255932Salfred return 0; 2023255932Salfred 2024255932Salfrederr_wq: 2025255932Salfred ctx->wq = NULL; 2026255932Salfred ib_destroy_qp(ctx->qp[1].qp); 2027255932Salfred ctx->qp[1].qp = NULL; 2028255932Salfred 2029255932Salfred 2030255932Salfrederr_qp0: 2031255932Salfred if (ctx->has_smi) 2032255932Salfred ib_destroy_qp(ctx->qp[0].qp); 2033255932Salfred ctx->qp[0].qp = NULL; 2034255932Salfred 2035255932Salfrederr_pd: 2036255932Salfred ib_dealloc_pd(ctx->pd); 2037255932Salfred ctx->pd = NULL; 2038255932Salfred 2039255932Salfrederr_cq: 2040255932Salfred ib_destroy_cq(ctx->cq); 2041255932Salfred ctx->cq = NULL; 2042255932Salfred 2043255932Salfrederr_buf: 2044255932Salfred mlx4_ib_free_pv_qp_bufs(ctx, IB_QPT_GSI, create_tun); 2045255932Salfred 2046255932Salfrederr_out_qp0: 2047255932Salfred if (ctx->has_smi) 2048255932Salfred mlx4_ib_free_pv_qp_bufs(ctx, IB_QPT_SMI, create_tun); 2049255932Salfrederr_out: 2050255932Salfred ctx->state = DEMUX_PV_STATE_DOWN; 2051255932Salfred return ret; 2052255932Salfred} 2053255932Salfred 2054255932Salfredstatic void destroy_pv_resources(struct mlx4_ib_dev *dev, int slave, int port, 2055255932Salfred struct mlx4_ib_demux_pv_ctx *ctx, int flush) 2056255932Salfred{ 2057255932Salfred if (!ctx) 2058255932Salfred return; 2059255932Salfred if (ctx->state > DEMUX_PV_STATE_DOWN) { 2060255932Salfred ctx->state = DEMUX_PV_STATE_DOWNING; 2061255932Salfred if (flush) 2062255932Salfred flush_workqueue(ctx->wq); 2063255932Salfred if (ctx->has_smi) { 2064255932Salfred ib_destroy_qp(ctx->qp[0].qp); 2065255932Salfred ctx->qp[0].qp = NULL; 2066255932Salfred mlx4_ib_free_pv_qp_bufs(ctx, IB_QPT_SMI, 1); 2067255932Salfred } 2068255932Salfred ib_destroy_qp(ctx->qp[1].qp); 2069255932Salfred ctx->qp[1].qp = NULL; 2070255932Salfred mlx4_ib_free_pv_qp_bufs(ctx, IB_QPT_GSI, 1); 2071255932Salfred ib_dealloc_pd(ctx->pd); 2072255932Salfred ctx->pd = NULL; 2073255932Salfred ib_destroy_cq(ctx->cq); 2074255932Salfred ctx->cq = NULL; 2075255932Salfred ctx->state = DEMUX_PV_STATE_DOWN; 2076255932Salfred } 2077255932Salfred} 2078255932Salfred 2079255932Salfredstatic int mlx4_ib_tunnels_update(struct mlx4_ib_dev *dev, int slave, 2080255932Salfred int port, int do_init) 2081255932Salfred{ 2082255932Salfred int ret = 0; 2083255932Salfred 2084255932Salfred if (!do_init) { 2085255932Salfred clean_vf_mcast(&dev->sriov.demux[port - 1], slave); 2086255932Salfred /* for master, destroy real sqp resources */ 2087255932Salfred if (slave == mlx4_master_func_num(dev->dev)) 2088255932Salfred destroy_pv_resources(dev, slave, port, 2089255932Salfred dev->sriov.sqps[port - 1], 1); 2090255932Salfred /* destroy the tunnel qp resources */ 2091255932Salfred destroy_pv_resources(dev, slave, port, 2092255932Salfred dev->sriov.demux[port - 1].tun[slave], 1); 2093255932Salfred return 0; 2094255932Salfred } 2095255932Salfred 2096255932Salfred /* create the tunnel qp resources */ 2097255932Salfred ret = create_pv_resources(&dev->ib_dev, slave, port, 1, 2098255932Salfred dev->sriov.demux[port - 1].tun[slave]); 2099255932Salfred 2100255932Salfred /* for master, create the real sqp resources */ 2101255932Salfred if (!ret && slave == mlx4_master_func_num(dev->dev)) 2102255932Salfred ret = create_pv_resources(&dev->ib_dev, slave, port, 0, 2103255932Salfred dev->sriov.sqps[port - 1]); 2104255932Salfred return ret; 2105255932Salfred} 2106255932Salfred 2107255932Salfredvoid mlx4_ib_tunnels_update_work(struct work_struct *work) 2108255932Salfred{ 2109255932Salfred struct mlx4_ib_demux_work *dmxw; 2110255932Salfred 2111255932Salfred dmxw = container_of(work, struct mlx4_ib_demux_work, work); 2112255932Salfred mlx4_ib_tunnels_update(dmxw->dev, dmxw->slave, (int) dmxw->port, 2113255932Salfred dmxw->do_init); 2114255932Salfred kfree(dmxw); 2115255932Salfred return; 2116255932Salfred} 2117255932Salfred 2118255932Salfredstatic int mlx4_ib_alloc_demux_ctx(struct mlx4_ib_dev *dev, 2119255932Salfred struct mlx4_ib_demux_ctx *ctx, 2120255932Salfred int port) 2121255932Salfred{ 2122255932Salfred char name[12]; 2123255932Salfred int ret = 0; 2124255932Salfred int i; 2125255932Salfred 2126255932Salfred ctx->tun = kcalloc(dev->dev->caps.sqp_demux, 2127255932Salfred sizeof (struct mlx4_ib_demux_pv_ctx *), GFP_KERNEL); 2128255932Salfred if (!ctx->tun) 2129255932Salfred return -ENOMEM; 2130255932Salfred 2131255932Salfred ctx->dev = dev; 2132255932Salfred ctx->port = port; 2133255932Salfred ctx->ib_dev = &dev->ib_dev; 2134255932Salfred 2135331769Shselasky for (i = 0; 2136331769Shselasky i < min(dev->dev->caps.sqp_demux, 2137331769Shselasky (u16)(dev->dev->persist->num_vfs + 1)); 2138331769Shselasky i++) { 2139331769Shselasky struct mlx4_active_ports actv_ports = 2140331769Shselasky mlx4_get_active_ports(dev->dev, i); 2141331769Shselasky 2142331769Shselasky if (!test_bit(port - 1, actv_ports.ports)) 2143331769Shselasky continue; 2144331769Shselasky 2145255932Salfred ret = alloc_pv_object(dev, i, port, &ctx->tun[i]); 2146255932Salfred if (ret) { 2147255932Salfred ret = -ENOMEM; 2148255932Salfred goto err_mcg; 2149255932Salfred } 2150255932Salfred } 2151255932Salfred 2152255932Salfred ret = mlx4_ib_mcg_port_init(ctx); 2153255932Salfred if (ret) { 2154255932Salfred pr_err("Failed initializing mcg para-virt (%d)\n", ret); 2155255932Salfred goto err_mcg; 2156255932Salfred } 2157255932Salfred 2158255932Salfred snprintf(name, sizeof name, "mlx4_ibt%d", port); 2159331769Shselasky ctx->wq = alloc_ordered_workqueue(name, WQ_MEM_RECLAIM); 2160255932Salfred if (!ctx->wq) { 2161255932Salfred pr_err("Failed to create tunnelling WQ for port %d\n", port); 2162255932Salfred ret = -ENOMEM; 2163255932Salfred goto err_wq; 2164255932Salfred } 2165255932Salfred 2166255932Salfred snprintf(name, sizeof name, "mlx4_ibud%d", port); 2167331769Shselasky ctx->ud_wq = alloc_ordered_workqueue(name, WQ_MEM_RECLAIM); 2168255932Salfred if (!ctx->ud_wq) { 2169255932Salfred pr_err("Failed to create up/down WQ for port %d\n", port); 2170255932Salfred ret = -ENOMEM; 2171255932Salfred goto err_udwq; 2172255932Salfred } 2173255932Salfred 2174255932Salfred return 0; 2175255932Salfred 2176255932Salfrederr_udwq: 2177255932Salfred destroy_workqueue(ctx->wq); 2178255932Salfred ctx->wq = NULL; 2179255932Salfred 2180255932Salfrederr_wq: 2181255932Salfred mlx4_ib_mcg_port_cleanup(ctx, 1); 2182255932Salfrederr_mcg: 2183255932Salfred for (i = 0; i < dev->dev->caps.sqp_demux; i++) 2184255932Salfred free_pv_object(dev, i, port); 2185255932Salfred kfree(ctx->tun); 2186255932Salfred ctx->tun = NULL; 2187255932Salfred return ret; 2188255932Salfred} 2189255932Salfred 2190255932Salfredstatic void mlx4_ib_free_sqp_ctx(struct mlx4_ib_demux_pv_ctx *sqp_ctx) 2191255932Salfred{ 2192255932Salfred if (sqp_ctx->state > DEMUX_PV_STATE_DOWN) { 2193255932Salfred sqp_ctx->state = DEMUX_PV_STATE_DOWNING; 2194255932Salfred flush_workqueue(sqp_ctx->wq); 2195255932Salfred if (sqp_ctx->has_smi) { 2196255932Salfred ib_destroy_qp(sqp_ctx->qp[0].qp); 2197255932Salfred sqp_ctx->qp[0].qp = NULL; 2198255932Salfred mlx4_ib_free_pv_qp_bufs(sqp_ctx, IB_QPT_SMI, 0); 2199255932Salfred } 2200255932Salfred ib_destroy_qp(sqp_ctx->qp[1].qp); 2201255932Salfred sqp_ctx->qp[1].qp = NULL; 2202255932Salfred mlx4_ib_free_pv_qp_bufs(sqp_ctx, IB_QPT_GSI, 0); 2203255932Salfred ib_dealloc_pd(sqp_ctx->pd); 2204255932Salfred sqp_ctx->pd = NULL; 2205255932Salfred ib_destroy_cq(sqp_ctx->cq); 2206255932Salfred sqp_ctx->cq = NULL; 2207255932Salfred sqp_ctx->state = DEMUX_PV_STATE_DOWN; 2208255932Salfred } 2209255932Salfred} 2210255932Salfred 2211255932Salfredstatic void mlx4_ib_free_demux_ctx(struct mlx4_ib_demux_ctx *ctx) 2212255932Salfred{ 2213255932Salfred int i; 2214255932Salfred if (ctx) { 2215255932Salfred struct mlx4_ib_dev *dev = to_mdev(ctx->ib_dev); 2216255932Salfred mlx4_ib_mcg_port_cleanup(ctx, 1); 2217255932Salfred for (i = 0; i < dev->dev->caps.sqp_demux; i++) { 2218255932Salfred if (!ctx->tun[i]) 2219255932Salfred continue; 2220255932Salfred if (ctx->tun[i]->state > DEMUX_PV_STATE_DOWN) 2221255932Salfred ctx->tun[i]->state = DEMUX_PV_STATE_DOWNING; 2222255932Salfred } 2223255932Salfred flush_workqueue(ctx->wq); 2224255932Salfred for (i = 0; i < dev->dev->caps.sqp_demux; i++) { 2225255932Salfred destroy_pv_resources(dev, i, ctx->port, ctx->tun[i], 0); 2226255932Salfred free_pv_object(dev, i, ctx->port); 2227255932Salfred } 2228255932Salfred kfree(ctx->tun); 2229255932Salfred destroy_workqueue(ctx->ud_wq); 2230255932Salfred destroy_workqueue(ctx->wq); 2231255932Salfred } 2232255932Salfred} 2233255932Salfred 2234255932Salfredstatic void mlx4_ib_master_tunnels(struct mlx4_ib_dev *dev, int do_init) 2235255932Salfred{ 2236255932Salfred int i; 2237255932Salfred 2238255932Salfred if (!mlx4_is_master(dev->dev)) 2239255932Salfred return; 2240255932Salfred /* initialize or tear down tunnel QPs for the master */ 2241255932Salfred for (i = 0; i < dev->dev->caps.num_ports; i++) 2242255932Salfred mlx4_ib_tunnels_update(dev, mlx4_master_func_num(dev->dev), i + 1, do_init); 2243255932Salfred return; 2244255932Salfred} 2245255932Salfred 2246255932Salfredint mlx4_ib_init_sriov(struct mlx4_ib_dev *dev) 2247255932Salfred{ 2248255932Salfred int i = 0; 2249255932Salfred int err; 2250255932Salfred 2251255932Salfred if (!mlx4_is_mfunc(dev->dev)) 2252255932Salfred return 0; 2253255932Salfred 2254255932Salfred dev->sriov.is_going_down = 0; 2255255932Salfred spin_lock_init(&dev->sriov.going_down_lock); 2256255932Salfred mlx4_ib_cm_paravirt_init(dev); 2257255932Salfred 2258255932Salfred mlx4_ib_warn(&dev->ib_dev, "multi-function enabled\n"); 2259255932Salfred 2260255932Salfred if (mlx4_is_slave(dev->dev)) { 2261255932Salfred mlx4_ib_warn(&dev->ib_dev, "operating in qp1 tunnel mode\n"); 2262255932Salfred return 0; 2263255932Salfred } 2264255932Salfred 2265255932Salfred for (i = 0; i < dev->dev->caps.sqp_demux; i++) { 2266255932Salfred if (i == mlx4_master_func_num(dev->dev)) 2267255932Salfred mlx4_put_slave_node_guid(dev->dev, i, dev->ib_dev.node_guid); 2268255932Salfred else 2269255932Salfred mlx4_put_slave_node_guid(dev->dev, i, mlx4_ib_gen_node_guid()); 2270255932Salfred } 2271255932Salfred 2272255932Salfred err = mlx4_ib_init_alias_guid_service(dev); 2273255932Salfred if (err) { 2274255932Salfred mlx4_ib_warn(&dev->ib_dev, "Failed init alias guid process.\n"); 2275255932Salfred goto paravirt_err; 2276255932Salfred } 2277255932Salfred err = mlx4_ib_device_register_sysfs(dev); 2278255932Salfred if (err) { 2279255932Salfred mlx4_ib_warn(&dev->ib_dev, "Failed to register sysfs\n"); 2280255932Salfred goto sysfs_err; 2281255932Salfred } 2282255932Salfred 2283255932Salfred mlx4_ib_warn(&dev->ib_dev, "initializing demux service for %d qp1 clients\n", 2284255932Salfred dev->dev->caps.sqp_demux); 2285255932Salfred for (i = 0; i < dev->num_ports; i++) { 2286255932Salfred union ib_gid gid; 2287255932Salfred err = __mlx4_ib_query_gid(&dev->ib_dev, i + 1, 0, &gid, 1); 2288255932Salfred if (err) 2289255932Salfred goto demux_err; 2290255932Salfred dev->sriov.demux[i].guid_cache[0] = gid.global.interface_id; 2291331769Shselasky atomic64_set(&dev->sriov.demux[i].subnet_prefix, 2292331769Shselasky be64_to_cpu(gid.global.subnet_prefix)); 2293255932Salfred err = alloc_pv_object(dev, mlx4_master_func_num(dev->dev), i + 1, 2294255932Salfred &dev->sriov.sqps[i]); 2295255932Salfred if (err) 2296255932Salfred goto demux_err; 2297255932Salfred err = mlx4_ib_alloc_demux_ctx(dev, &dev->sriov.demux[i], i + 1); 2298255932Salfred if (err) 2299331769Shselasky goto free_pv; 2300255932Salfred } 2301255932Salfred mlx4_ib_master_tunnels(dev, 1); 2302255932Salfred return 0; 2303255932Salfred 2304331769Shselaskyfree_pv: 2305331769Shselasky free_pv_object(dev, mlx4_master_func_num(dev->dev), i + 1); 2306255932Salfreddemux_err: 2307331769Shselasky while (--i >= 0) { 2308255932Salfred free_pv_object(dev, mlx4_master_func_num(dev->dev), i + 1); 2309255932Salfred mlx4_ib_free_demux_ctx(&dev->sriov.demux[i]); 2310255932Salfred } 2311255932Salfred mlx4_ib_device_unregister_sysfs(dev); 2312255932Salfred 2313255932Salfredsysfs_err: 2314255932Salfred mlx4_ib_destroy_alias_guid_service(dev); 2315255932Salfred 2316255932Salfredparavirt_err: 2317255932Salfred mlx4_ib_cm_paravirt_clean(dev, -1); 2318255932Salfred 2319255932Salfred return err; 2320255932Salfred} 2321255932Salfred 2322255932Salfredvoid mlx4_ib_close_sriov(struct mlx4_ib_dev *dev) 2323255932Salfred{ 2324255932Salfred int i; 2325255932Salfred unsigned long flags; 2326255932Salfred 2327255932Salfred if (!mlx4_is_mfunc(dev->dev)) 2328255932Salfred return; 2329255932Salfred 2330255932Salfred spin_lock_irqsave(&dev->sriov.going_down_lock, flags); 2331255932Salfred dev->sriov.is_going_down = 1; 2332255932Salfred spin_unlock_irqrestore(&dev->sriov.going_down_lock, flags); 2333255932Salfred if (mlx4_is_master(dev->dev)) { 2334255932Salfred for (i = 0; i < dev->num_ports; i++) { 2335255932Salfred flush_workqueue(dev->sriov.demux[i].ud_wq); 2336255932Salfred mlx4_ib_free_sqp_ctx(dev->sriov.sqps[i]); 2337255932Salfred kfree(dev->sriov.sqps[i]); 2338255932Salfred dev->sriov.sqps[i] = NULL; 2339255932Salfred mlx4_ib_free_demux_ctx(&dev->sriov.demux[i]); 2340255932Salfred } 2341255932Salfred 2342255932Salfred mlx4_ib_cm_paravirt_clean(dev, -1); 2343255932Salfred mlx4_ib_destroy_alias_guid_service(dev); 2344255932Salfred mlx4_ib_device_unregister_sysfs(dev); 2345255932Salfred } 2346255932Salfred} 2347