From: Parav Pandit <parav.pan...@emulex.com>
- address handle specific handling.
Signed-off-by: Parav Pandit <parav.pan...@emulex.com>
---
drivers/infiniband/hw/ocrdma/ocrdma_ah.c | 172 ++++++++++++++++++++++++++++++
drivers/infiniband/hw/ocrdma/ocrdma_ah.h | 42 +++++++
2 files changed, 214 insertions(+), 0 deletions(-)
create mode 100644 drivers/infiniband/hw/ocrdma/ocrdma_ah.c
create mode 100644 drivers/infiniband/hw/ocrdma/ocrdma_ah.h
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
b/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
new file mode 100644
index 0000000..a877a8e
--- /dev/null
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_ah.c
@@ -0,0 +1,172 @@
+/*******************************************************************
+ * 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. *
+ *
+ * Contact Information:
+ * linux-driv...@emulex.com
+ *
+ * Emulex
+ * 3333 Susan Street
+ * Costa Mesa, CA 92626
+ *******************************************************************/
+
+#include <net/neighbour.h>
+#include <net/netevent.h>
+
+#include <rdma/ib_addr.h>
+#include <rdma/ib_cache.h>
+
+#include "ocrdma.h"
+#include "ocrdma_verbs.h"
+#include "ocrdma_ah.h"
+#include "ocrdma_hw.h"
+
+static inline int set_av_attr(struct ocrdma_ah *ah,
+ struct ib_ah_attr *attr, int pdid)
+{
+ int status = 0;
+ u16 vlan_tag; bool vlan_enabled = false;
+ struct ocrdma_dev *dev = ah->dev;
+ struct ocrdma_eth_vlan eth;
+ struct ocrdma_grh grh;
+ int eth_sz;
+
+ memset(ð, 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)) {
+ 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.vlan_tag = cpu_to_be16(vlan_tag);
+ eth_sz = sizeof(struct ocrdma_eth_vlan);
+ vlan_enabled = true;
+ } else {
+ eth.eth_type = cpu_to_be16(OCRDMA_ROCE_ETH_TYPE);
+ eth_sz = sizeof(struct ocrdma_eth_basic);
+ }
+ memcpy(ð.smac[0], &dev->nic_info.mac_addr[0], ETH_ALEN);
+ status = ocrdma_resolve_dgid(dev, &attr->grh.dgid, ð.dmac[0]);
+ if (status)
+ return status;
+ status = ocrdma_query_gid(&dev->ibdev, 1, attr->grh.sgid_index,
+ (union ib_gid *)&grh.sgid[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));
+ memcpy(&ah->av->eth_hdr, ð, eth_sz);
+ memcpy((u8 *)ah->av + eth_sz, &grh, sizeof(struct ocrdma_grh));
+ if (vlan_enabled)
+ ah->av->valid |= OCRDMA_AV_VLAN_VALID;
+ return status;
+}
+
+struct ib_ah *ocrdma_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr)
+{
+ u32 *ahid_addr;
+ int status;
+ struct ocrdma_ah *ah;
+ struct ocrdma_pd *pd = get_ocrdma_pd(ibpd);
+ struct ocrdma_dev *dev = pd->dev;
+
+ if (!(attr->ah_flags & IB_AH_GRH))
+ return ERR_PTR(-EINVAL);
+
+ ah = kzalloc(sizeof *ah, GFP_ATOMIC);
+ if (!ah)
+ return ERR_PTR(-ENOMEM);
+ ah->dev = pd->dev;
+
+ status = ocrdma_alloc_av(dev, ah);
+ if (status)
+ goto av_err;
+ status = set_av_attr(ah, attr, pd->id);
+ 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;
+ }
+ return &ah->ibah;
+
+av_conf_err:
+ ocrdma_free_av(dev, ah);
+av_err:
+ kfree(ah);
+ return ERR_PTR(status);
+}
+
+int ocrdma_destroy_ah(struct ib_ah *ibah)
+{
+ struct ocrdma_ah *ah = get_ocrdma_ah(ibah);
+ ocrdma_free_av(ah->dev, ah);
+ kfree(ah);
+ return 0;
+}
+
+int ocrdma_query_ah(struct ib_ah *ibah, struct ib_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)) {
+ grh = (struct ocrdma_grh *)((u8 *)ah->av +
+ sizeof(struct ocrdma_eth_vlan));
+ attr->sl = 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;
+ }
+ 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;
+ return 0;
+}
+
+int ocrdma_modify_ah(struct ib_ah *ibah, struct ib_ah_attr *attr)
+{
+ /* modify_ah is unsupported */
+ return -ENOSYS;
+}
+
+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;
+}
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_ah.h
b/drivers/infiniband/hw/ocrdma/ocrdma_ah.h
new file mode 100644
index 0000000..8ac49e7
--- /dev/null
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_ah.h
@@ -0,0 +1,42 @@
+/*******************************************************************
+ * 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. *
+ *
+ * Contact Information:
+ * linux-driv...@emulex.com
+ *
+ * Emulex
+ * 3333 Susan Street
+ * Costa Mesa, CA 92626
+ *******************************************************************/
+
+#ifndef __OCRDMA_AH_H__
+#define __OCRDMA_AH_H__
+
+struct ib_ah *ocrdma_create_ah(struct ib_pd *, struct ib_ah_attr *);
+int ocrdma_destroy_ah(struct ib_ah *);
+int ocrdma_query_ah(struct ib_ah *, struct ib_ah_attr *);
+int ocrdma_modify_ah(struct ib_ah *, struct ib_ah_attr *);
+
+int ocrdma_process_mad(struct ib_device *,
+ 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);
+#endif /* __OCRDMA_AH_H__ */
--
1.6.0.2
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