summaryrefslogtreecommitdiff
path: root/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/infiniband/hw/ocrdma/ocrdma_ah.c')
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_ah.c274
1 files changed, 185 insertions, 89 deletions
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_ah.c b/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
index a877a8ed7907..88c45928301f 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
@@ -1,21 +1,36 @@
-/*******************************************************************
- * This file is part of the Emulex RoCE Device Driver for *
- * RoCE (RDMA over Converged Ethernet) adapters. *
- * Copyright (C) 2008-2012 Emulex. All rights reserved. *
- * EMULEX and SLI are trademarks of Emulex. *
- * www.emulex.com *
- * *
- * This program is free software; you can redistribute it and/or *
- * modify it under the terms of version 2 of the GNU General *
- * Public License as published by the Free Software Foundation. *
- * This program is distributed in the hope that it will be useful. *
- * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
- * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
- * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
- * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
- * TO BE LEGALLY INVALID. See the GNU General Public License for *
- * more details, a copy of which can be found in the file COPYING *
- * included with this package. *
+/* This file is part of the Emulex RoCE Device Driver for
+ * RoCE (RDMA over Converged Ethernet) adapters.
+ * Copyright (C) 2012-2015 Emulex. All rights reserved.
+ * EMULEX and SLI are trademarks of Emulex.
+ * www.emulex.com
+ *
+ * This software is available to you under a choice of one of two licenses.
+ * You may choose to be licensed under the terms of the GNU General Public
+ * License (GPL) Version 2, available from the file COPYING in the main
+ * directory of this source tree, or the BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Contact Information:
* linux-drivers@emulex.com
@@ -23,150 +38,231 @@
* Emulex
* 3333 Susan Street
* Costa Mesa, CA 92626
- *******************************************************************/
+ */
#include <net/neighbour.h>
#include <net/netevent.h>
#include <rdma/ib_addr.h>
+#include <rdma/ib_mad.h>
#include <rdma/ib_cache.h>
#include "ocrdma.h"
#include "ocrdma_verbs.h"
#include "ocrdma_ah.h"
#include "ocrdma_hw.h"
+#include "ocrdma_stats.h"
+
+#define OCRDMA_VID_PCP_SHIFT 0xD
+
+static u16 ocrdma_hdr_type_to_proto_num(int devid, u8 hdr_type)
+{
+ switch (hdr_type) {
+ case OCRDMA_L3_TYPE_IB_GRH:
+ return (u16)ETH_P_IBOE;
+ case OCRDMA_L3_TYPE_IPV4:
+ return (u16)0x0800;
+ case OCRDMA_L3_TYPE_IPV6:
+ return (u16)0x86dd;
+ default:
+ pr_err("ocrdma%d: Invalid network header\n", devid);
+ return 0;
+ }
+}
-static inline int set_av_attr(struct ocrdma_ah *ah,
- struct ib_ah_attr *attr, int pdid)
+static inline int set_av_attr(struct ocrdma_dev *dev, struct ocrdma_ah *ah,
+ struct rdma_ah_attr *attr, const union ib_gid *sgid,
+ int pdid, bool *isvlan, u16 vlan_tag)
{
- int status = 0;
- u16 vlan_tag; bool vlan_enabled = false;
- struct ocrdma_dev *dev = ah->dev;
+ int status;
struct ocrdma_eth_vlan eth;
struct ocrdma_grh grh;
int eth_sz;
+ u16 proto_num = 0;
+ u8 nxthdr = 0x11;
+ struct iphdr ipv4;
+ const struct ib_global_route *ib_grh;
+ union {
+ struct sockaddr_in _sockaddr_in;
+ struct sockaddr_in6 _sockaddr_in6;
+ } sgid_addr, dgid_addr;
memset(&eth, 0, sizeof(eth));
memset(&grh, 0, sizeof(grh));
- ah->sgid_index = attr->grh.sgid_index;
-
- vlan_tag = rdma_get_vlan_id(&attr->grh.dgid);
- if (vlan_tag && (vlan_tag < 0x1000)) {
+ /* Protocol Number */
+ proto_num = ocrdma_hdr_type_to_proto_num(dev->id, ah->hdr_type);
+ if (!proto_num)
+ return -EINVAL;
+ nxthdr = (proto_num == ETH_P_IBOE) ? 0x1b : 0x11;
+ /* VLAN */
+ if (!vlan_tag || (vlan_tag > 0xFFF))
+ vlan_tag = dev->pvid;
+ if (vlan_tag || dev->pfc_state) {
+ if (!vlan_tag) {
+ pr_err("ocrdma%d:Using VLAN with PFC is recommended\n",
+ dev->id);
+ pr_err("ocrdma%d:Using VLAN 0 for this connection\n",
+ dev->id);
+ }
eth.eth_type = cpu_to_be16(0x8100);
- eth.roce_eth_type = cpu_to_be16(OCRDMA_ROCE_ETH_TYPE);
- vlan_tag |= (attr->sl & 7) << 13;
+ eth.roce_eth_type = cpu_to_be16(proto_num);
+ vlan_tag |= (dev->sl & 0x07) << OCRDMA_VID_PCP_SHIFT;
eth.vlan_tag = cpu_to_be16(vlan_tag);
eth_sz = sizeof(struct ocrdma_eth_vlan);
- vlan_enabled = true;
+ *isvlan = true;
} else {
- eth.eth_type = cpu_to_be16(OCRDMA_ROCE_ETH_TYPE);
+ eth.eth_type = cpu_to_be16(proto_num);
eth_sz = sizeof(struct ocrdma_eth_basic);
}
+ /* MAC */
memcpy(&eth.smac[0], &dev->nic_info.mac_addr[0], ETH_ALEN);
- status = ocrdma_resolve_dgid(dev, &attr->grh.dgid, &eth.dmac[0]);
- if (status)
- return status;
- status = ocrdma_query_gid(&dev->ibdev, 1, attr->grh.sgid_index,
- (union ib_gid *)&grh.sgid[0]);
+ status = ocrdma_resolve_dmac(dev, attr, &eth.dmac[0]);
if (status)
return status;
-
- grh.tclass_flow = cpu_to_be32((6 << 28) |
- (attr->grh.traffic_class << 24) |
- attr->grh.flow_label);
- /* 0x1b is next header value in GRH */
- grh.pdid_hoplimit = cpu_to_be32((pdid << 16) |
- (0x1b << 8) | attr->grh.hop_limit);
-
- memcpy(&grh.dgid[0], attr->grh.dgid.raw, sizeof(attr->grh.dgid.raw));
+ ib_grh = rdma_ah_read_grh(attr);
+ ah->sgid_index = ib_grh->sgid_index;
+ /* Eth HDR */
memcpy(&ah->av->eth_hdr, &eth, eth_sz);
- memcpy((u8 *)ah->av + eth_sz, &grh, sizeof(struct ocrdma_grh));
- if (vlan_enabled)
+ if (ah->hdr_type == RDMA_NETWORK_IPV4) {
+ *((__be16 *)&ipv4) = htons((4 << 12) | (5 << 8) |
+ ib_grh->traffic_class);
+ ipv4.id = cpu_to_be16(pdid);
+ ipv4.frag_off = htons(IP_DF);
+ ipv4.tot_len = htons(0);
+ ipv4.ttl = ib_grh->hop_limit;
+ ipv4.protocol = nxthdr;
+ rdma_gid2ip((struct sockaddr *)&sgid_addr, sgid);
+ ipv4.saddr = sgid_addr._sockaddr_in.sin_addr.s_addr;
+ rdma_gid2ip((struct sockaddr*)&dgid_addr, &ib_grh->dgid);
+ ipv4.daddr = dgid_addr._sockaddr_in.sin_addr.s_addr;
+ memcpy((u8 *)ah->av + eth_sz, &ipv4, sizeof(struct iphdr));
+ } else {
+ memcpy(&grh.sgid[0], sgid->raw, sizeof(union ib_gid));
+ grh.tclass_flow = cpu_to_be32((6 << 28) |
+ (ib_grh->traffic_class << 24) |
+ ib_grh->flow_label);
+ memcpy(&grh.dgid[0], ib_grh->dgid.raw,
+ sizeof(ib_grh->dgid.raw));
+ grh.pdid_hoplimit = cpu_to_be32((pdid << 16) |
+ (nxthdr << 8) |
+ ib_grh->hop_limit);
+ memcpy((u8 *)ah->av + eth_sz, &grh, sizeof(struct ocrdma_grh));
+ }
+ if (*isvlan)
ah->av->valid |= OCRDMA_AV_VLAN_VALID;
+ ah->av->valid = cpu_to_le32(ah->av->valid);
return status;
}
-struct ib_ah *ocrdma_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr)
+int ocrdma_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
+ struct ib_udata *udata)
{
u32 *ahid_addr;
int status;
- struct ocrdma_ah *ah;
- struct ocrdma_pd *pd = get_ocrdma_pd(ibpd);
- struct ocrdma_dev *dev = pd->dev;
+ struct ocrdma_ah *ah = get_ocrdma_ah(ibah);
+ bool isvlan = false;
+ u16 vlan_tag = 0xffff;
+ const struct ib_gid_attr *sgid_attr;
+ struct ocrdma_pd *pd = get_ocrdma_pd(ibah->pd);
+ struct rdma_ah_attr *attr = init_attr->ah_attr;
+ struct ocrdma_dev *dev = get_ocrdma_dev(ibah->device);
- if (!(attr->ah_flags & IB_AH_GRH))
- return ERR_PTR(-EINVAL);
+ if ((attr->type != RDMA_AH_ATTR_TYPE_ROCE) ||
+ !(rdma_ah_get_ah_flags(attr) & IB_AH_GRH))
+ return -EINVAL;
- ah = kzalloc(sizeof *ah, GFP_ATOMIC);
- if (!ah)
- return ERR_PTR(-ENOMEM);
- ah->dev = pd->dev;
+ if (atomic_cmpxchg(&dev->update_sl, 1, 0))
+ ocrdma_init_service_level(dev);
+
+ sgid_attr = attr->grh.sgid_attr;
+ status = rdma_read_gid_l2_fields(sgid_attr, &vlan_tag, NULL);
+ if (status)
+ return status;
status = ocrdma_alloc_av(dev, ah);
if (status)
goto av_err;
- status = set_av_attr(ah, attr, pd->id);
+
+ /* Get network header type for this GID */
+ ah->hdr_type = rdma_gid_attr_network_type(sgid_attr);
+
+ status = set_av_attr(dev, ah, attr, &sgid_attr->gid, pd->id,
+ &isvlan, vlan_tag);
if (status)
goto av_conf_err;
/* if pd is for the user process, pass the ah_id to user space */
if ((pd->uctx) && (pd->uctx->ah_tbl.va)) {
- ahid_addr = pd->uctx->ah_tbl.va + attr->dlid;
- *ahid_addr = ah->id;
+ ahid_addr = pd->uctx->ah_tbl.va + rdma_ah_get_dlid(attr);
+ *ahid_addr = 0;
+ *ahid_addr |= ah->id & OCRDMA_AH_ID_MASK;
+ if (ocrdma_is_udp_encap_supported(dev)) {
+ *ahid_addr |= ((u32)ah->hdr_type &
+ OCRDMA_AH_L3_TYPE_MASK) <<
+ OCRDMA_AH_L3_TYPE_SHIFT;
+ }
+ if (isvlan)
+ *ahid_addr |= (OCRDMA_AH_VLAN_VALID_MASK <<
+ OCRDMA_AH_VLAN_VALID_SHIFT);
}
- return &ah->ibah;
+
+ return 0;
av_conf_err:
ocrdma_free_av(dev, ah);
av_err:
- kfree(ah);
- return ERR_PTR(status);
+ return status;
}
-int ocrdma_destroy_ah(struct ib_ah *ibah)
+int ocrdma_destroy_ah(struct ib_ah *ibah, u32 flags)
{
struct ocrdma_ah *ah = get_ocrdma_ah(ibah);
- ocrdma_free_av(ah->dev, ah);
- kfree(ah);
+ struct ocrdma_dev *dev = get_ocrdma_dev(ibah->device);
+
+ ocrdma_free_av(dev, ah);
return 0;
}
-int ocrdma_query_ah(struct ib_ah *ibah, struct ib_ah_attr *attr)
+int ocrdma_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr)
{
struct ocrdma_ah *ah = get_ocrdma_ah(ibah);
struct ocrdma_av *av = ah->av;
struct ocrdma_grh *grh;
- attr->ah_flags |= IB_AH_GRH;
- if (ah->av->valid & Bit(1)) {
+
+ attr->type = ibah->type;
+ if (ah->av->valid & OCRDMA_AV_VALID) {
grh = (struct ocrdma_grh *)((u8 *)ah->av +
sizeof(struct ocrdma_eth_vlan));
- attr->sl = be16_to_cpu(av->eth_hdr.vlan_tag) >> 13;
+ rdma_ah_set_sl(attr, be16_to_cpu(av->eth_hdr.vlan_tag) >> 13);
} else {
grh = (struct ocrdma_grh *)((u8 *)ah->av +
sizeof(struct ocrdma_eth_basic));
- attr->sl = 0;
+ rdma_ah_set_sl(attr, 0);
}
- memcpy(&attr->grh.dgid.raw[0], &grh->dgid[0], sizeof(grh->dgid));
- attr->grh.sgid_index = ah->sgid_index;
- attr->grh.hop_limit = be32_to_cpu(grh->pdid_hoplimit) & 0xff;
- attr->grh.traffic_class = be32_to_cpu(grh->tclass_flow) >> 24;
- attr->grh.flow_label = be32_to_cpu(grh->tclass_flow) & 0x00ffffffff;
+ rdma_ah_set_grh(attr, NULL,
+ be32_to_cpu(grh->tclass_flow) & 0xffffffff,
+ ah->sgid_index,
+ be32_to_cpu(grh->pdid_hoplimit) & 0xff,
+ be32_to_cpu(grh->tclass_flow) >> 24);
+ rdma_ah_set_dgid_raw(attr, &grh->dgid[0]);
return 0;
}
-int ocrdma_modify_ah(struct ib_ah *ibah, struct ib_ah_attr *attr)
+int ocrdma_process_mad(struct ib_device *ibdev, int process_mad_flags,
+ u32 port_num, const struct ib_wc *in_wc,
+ const struct ib_grh *in_grh, const struct ib_mad *in,
+ struct ib_mad *out, size_t *out_mad_size,
+ u16 *out_mad_pkey_index)
{
- /* modify_ah is unsupported */
- return -ENOSYS;
-}
+ int status = IB_MAD_RESULT_SUCCESS;
+ struct ocrdma_dev *dev;
-int ocrdma_process_mad(struct ib_device *ibdev,
- int process_mad_flags,
- u8 port_num,
- struct ib_wc *in_wc,
- struct ib_grh *in_grh,
- struct ib_mad *in_mad, struct ib_mad *out_mad)
-{
- return IB_MAD_RESULT_SUCCESS;
+ if (in->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT) {
+ dev = get_ocrdma_dev(ibdev);
+ ocrdma_pma_counters(dev, out);
+ status |= IB_MAD_RESULT_REPLY;
+ }
+
+ return status;
}
generated by cgit (git 2.34.1) at 2025-12-25 23:33:04 +0000