[mirror_ubuntu-artful-kernel.git] / drivers / infiniband / hw / ocrdma / ocrdma_ah.c

/* 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
 *
 * 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)0x8915;
	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_dev *dev, struct ocrdma_ah *ah,
			struct ib_ah_attr *attr, union ib_gid *sgid,
			int pdid, bool *isvlan, u16 vlan_tag)
{
	int status;
	struct ocrdma_eth_vlan eth;
	struct ocrdma_grh grh;
	int eth_sz;
	u16 proto_num = 0;
	u8 nxthdr = 0x11;
	struct iphdr ipv4;
	union {
		struct sockaddr     _sockaddr;
		struct sockaddr_in  _sockaddr_in;
		struct sockaddr_in6 _sockaddr_in6;
	} sgid_addr, dgid_addr;

	memset(&eth, 0, sizeof(eth));
	memset(&grh, 0, sizeof(grh));

	/* Protocol Number */
	proto_num = ocrdma_hdr_type_to_proto_num(dev->id, ah->hdr_type);
	if (!proto_num)
		return -EINVAL;
	nxthdr = (proto_num == 0x8915) ? 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(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);
		*isvlan = true;
	} else {
		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_dmac(dev, attr, &eth.dmac[0]);
	if (status)
		return status;
	ah->sgid_index = attr->grh.sgid_index;
	/* Eth HDR */
	memcpy(&ah->av->eth_hdr, &eth, eth_sz);
	if (ah->hdr_type == RDMA_NETWORK_IPV4) {
		*((__be16 *)&ipv4) = htons((4 << 12) | (5 << 8) |
					   attr->grh.traffic_class);
		ipv4.id = cpu_to_be16(pdid);
		ipv4.frag_off = htons(IP_DF);
		ipv4.tot_len = htons(0);
		ipv4.ttl = attr->grh.hop_limit;
		ipv4.protocol = nxthdr;
		rdma_gid2ip(&sgid_addr._sockaddr, sgid);
		ipv4.saddr = sgid_addr._sockaddr_in.sin_addr.s_addr;
		rdma_gid2ip(&dgid_addr._sockaddr, &attr->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) |
					      (attr->grh.traffic_class << 24) |
					      attr->grh.flow_label);
		memcpy(&grh.dgid[0], attr->grh.dgid.raw,
		       sizeof(attr->grh.dgid.raw));
		grh.pdid_hoplimit = cpu_to_be32((pdid << 16) |
						(nxthdr << 8) |
						attr->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,
			       struct ib_udata *udata)
{
	u32 *ahid_addr;
	int status;
	struct ocrdma_ah *ah;
	bool isvlan = false;
	u16 vlan_tag = 0xffff;
	struct ib_gid_attr sgid_attr;
	struct ocrdma_pd *pd = get_ocrdma_pd(ibpd);
	struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device);
	union ib_gid sgid;

	if (!(attr->ah_flags & IB_AH_GRH))
		return ERR_PTR(-EINVAL);

	if (atomic_cmpxchg(&dev->update_sl, 1, 0))
		ocrdma_init_service_level(dev);

	ah = kzalloc(sizeof(*ah), GFP_ATOMIC);
	if (!ah)
		return ERR_PTR(-ENOMEM);

	status = ocrdma_alloc_av(dev, ah);
	if (status)
		goto av_err;

	status = ib_get_cached_gid(&dev->ibdev, 1, attr->grh.sgid_index, &sgid,
				   &sgid_attr);
	if (status) {
		pr_err("%s(): Failed to query sgid, status = %d\n",
		      __func__, status);
		goto av_conf_err;
	}
	if (sgid_attr.ndev) {
		if (is_vlan_dev(sgid_attr.ndev))
			vlan_tag = vlan_dev_vlan_id(sgid_attr.ndev);
		dev_put(sgid_attr.ndev);
	}
	/* Get network header type for this GID */
	ah->hdr_type = ib_gid_to_network_type(sgid_attr.gid_type, &sgid);

	if ((pd->uctx) &&
	    (!rdma_is_multicast_addr((struct in6_addr *)attr->grh.dgid.raw)) &&
	    (!rdma_link_local_addr((struct in6_addr *)attr->grh.dgid.raw))) {
		status = rdma_addr_find_l2_eth_by_grh(&sgid, &attr->grh.dgid,
						      attr->dmac, &vlan_tag,
						      &sgid_attr.ndev->ifindex,
						      NULL);
		if (status) {
			pr_err("%s(): Failed to resolve dmac from gid." 
				"status = %d\n", __func__, status);
			goto av_conf_err;
		}
	}

	status = set_av_attr(dev, ah, attr, &sgid, 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 = 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;

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);
	struct ocrdma_dev *dev = get_ocrdma_dev(ibah->device);

	ocrdma_free_av(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 & 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;
	} 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,
		       const struct ib_wc *in_wc,
		       const struct ib_grh *in_grh,
		       const struct ib_mad_hdr *in, size_t in_mad_size,
		       struct ib_mad_hdr *out, size_t *out_mad_size,
		       u16 *out_mad_pkey_index)
{
	int status;
	struct ocrdma_dev *dev;
	const struct ib_mad *in_mad = (const struct ib_mad *)in;
	struct ib_mad *out_mad = (struct ib_mad *)out;

	if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) ||
			 *out_mad_size != sizeof(*out_mad)))
		return IB_MAD_RESULT_FAILURE;

	switch (in_mad->mad_hdr.mgmt_class) {
	case IB_MGMT_CLASS_PERF_MGMT:
		dev = get_ocrdma_dev(ibdev);
		if (!ocrdma_pma_counters(dev, out_mad))
			status = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
		else
			status = IB_MAD_RESULT_SUCCESS;
		break;
	default:
		status = IB_MAD_RESULT_SUCCESS;
		break;
	}
	return status;
}
Commit	Line	Data
71ee6730 DS	1	/* This file is part of the Emulex RoCE Device Driver for
	2	* RoCE (RDMA over Converged Ethernet) adapters.
	3	* Copyright (C) 2012-2015 Emulex. All rights reserved.
	4	* EMULEX and SLI are trademarks of Emulex.
	5	* www.emulex.com
	6	*
	7	* This software is available to you under a choice of one of two licenses.
	8	* You may choose to be licensed under the terms of the GNU General Public
	9	* License (GPL) Version 2, available from the file COPYING in the main
	10	* directory of this source tree, or the BSD license below:
	11	*
	12	* Redistribution and use in source and binary forms, with or without
	13	* modification, are permitted provided that the following conditions
	14	* are met:
	15	*
	16	* - Redistributions of source code must retain the above copyright notice,
	17	* this list of conditions and the following disclaimer.
	18	*
	19	* - Redistributions in binary form must reproduce the above copyright
	20	* notice, this list of conditions and the following disclaimer in
	21	* the documentation and/or other materials provided with the distribution.
	22	*
	23	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	24	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE
	25	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	26	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
	27	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	28	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	29	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
	30	* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
	31	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
	32	* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
	33	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
fe2caefc PP	34	*
	35	* Contact Information:
	36	* linux-drivers@emulex.com
	37	*
	38	* Emulex
	39	* 3333 Susan Street
	40	* Costa Mesa, CA 92626
71ee6730	41	*/
fe2caefc PP	42
	43	#include <net/neighbour.h>
	44	#include <net/netevent.h>
	45
	46	#include <rdma/ib_addr.h>
cad1fbb0	47	#include <rdma/ib_mad.h>
dbf727de	48	#include <rdma/ib_cache.h>
fe2caefc PP	49
	50	#include "ocrdma.h"
	51	#include "ocrdma_verbs.h"
	52	#include "ocrdma_ah.h"
	53	#include "ocrdma_hw.h"
cad1fbb0	54	#include "ocrdma_stats.h"
fe2caefc	55
0ea87262 DS	56	#define OCRDMA_VID_PCP_SHIFT 0xD
0ea87262 DS	57
6b062667 DS	58	static u16 ocrdma_hdr_type_to_proto_num(int devid, u8 hdr_type)
	59	{
	60	switch (hdr_type) {
	61	case OCRDMA_L3_TYPE_IB_GRH:
	62	return (u16)0x8915;
	63	case OCRDMA_L3_TYPE_IPV4:
	64	return (u16)0x0800;
	65	case OCRDMA_L3_TYPE_IPV6:
	66	return (u16)0x86dd;
	67	default:
	68	pr_err("ocrdma%d: Invalid network header\n", devid);
	69	return 0;
	70	}
	71	}
	72
1afc0454	73	static inline int set_av_attr(struct ocrdma_dev dev, struct ocrdma_ah ah,
29565f2f	74	struct ib_ah_attr attr, union ib_gid sgid,
dbf727de	75	int pdid, bool *isvlan, u16 vlan_tag)
fe2caefc	76	{
0ca4c39f	77	int status;
fe2caefc PP	78	struct ocrdma_eth_vlan eth;
	79	struct ocrdma_grh grh;
	80	int eth_sz;
6b062667 DS	81	u16 proto_num = 0;
	82	u8 nxthdr = 0x11;
	83	struct iphdr ipv4;
	84	union {
	85	struct sockaddr _sockaddr;
	86	struct sockaddr_in _sockaddr_in;
	87	struct sockaddr_in6 _sockaddr_in6;
	88	} sgid_addr, dgid_addr;
fe2caefc PP	89
	90	memset(&eth, 0, sizeof(eth));
	91	memset(&grh, 0, sizeof(grh));
	92
6b062667 DS	93	/* Protocol Number */
	94	proto_num = ocrdma_hdr_type_to_proto_num(dev->id, ah->hdr_type);
	95	if (!proto_num)
	96	return -EINVAL;
	97	nxthdr = (proto_num == 0x8915) ? 0x1b : 0x11;
1be528bc	98	/* VLAN */
84b105db NG	99	if (!vlan_tag \|\| (vlan_tag > 0xFFF))
84b105db NG	100	vlan_tag = dev->pvid;
6f5deab0 DS	101	if (vlan_tag \|\| dev->pfc_state) {
	102	if (!vlan_tag) {
	103	pr_err("ocrdma%d:Using VLAN with PFC is recommended\n",
	104	dev->id);
	105	pr_err("ocrdma%d:Using VLAN 0 for this connection\n",
	106	dev->id);
	107	}
fe2caefc	108	eth.eth_type = cpu_to_be16(0x8100);
6b062667	109	eth.roce_eth_type = cpu_to_be16(proto_num);
0ea87262	110	vlan_tag \|= (dev->sl & 0x07) << OCRDMA_VID_PCP_SHIFT;
fe2caefc PP	111	eth.vlan_tag = cpu_to_be16(vlan_tag);
fe2caefc PP	112	eth_sz = sizeof(struct ocrdma_eth_vlan);
29565f2f	113	*isvlan = true;
fe2caefc	114	} else {
6b062667	115	eth.eth_type = cpu_to_be16(proto_num);
fe2caefc PP	116	eth_sz = sizeof(struct ocrdma_eth_basic);
fe2caefc PP	117	}
1be528bc	118	/* MAC */
fe2caefc	119	memcpy(&eth.smac[0], &dev->nic_info.mac_addr[0], ETH_ALEN);
40aca6ff	120	status = ocrdma_resolve_dmac(dev, attr, &eth.dmac[0]);
fe2caefc PP	121	if (status)
fe2caefc PP	122	return status;
1be528bc	123	ah->sgid_index = attr->grh.sgid_index;
1be528bc	124	/* Eth HDR */
fe2caefc	125	memcpy(&ah->av->eth_hdr, &eth, eth_sz);
6b062667 DS	126	if (ah->hdr_type == RDMA_NETWORK_IPV4) {
	127	((__be16 )&ipv4) = htons((4 << 12) \| (5 << 8) \|
	128	attr->grh.traffic_class);
	129	ipv4.id = cpu_to_be16(pdid);
	130	ipv4.frag_off = htons(IP_DF);
	131	ipv4.tot_len = htons(0);
	132	ipv4.ttl = attr->grh.hop_limit;
	133	ipv4.protocol = nxthdr;
	134	rdma_gid2ip(&sgid_addr._sockaddr, sgid);
	135	ipv4.saddr = sgid_addr._sockaddr_in.sin_addr.s_addr;
	136	rdma_gid2ip(&dgid_addr._sockaddr, &attr->grh.dgid);
	137	ipv4.daddr = dgid_addr._sockaddr_in.sin_addr.s_addr;
	138	memcpy((u8 *)ah->av + eth_sz, &ipv4, sizeof(struct iphdr));
	139	} else {
	140	memcpy(&grh.sgid[0], sgid->raw, sizeof(union ib_gid));
	141	grh.tclass_flow = cpu_to_be32((6 << 28) \|
	142	(attr->grh.traffic_class << 24) \|
	143	attr->grh.flow_label);
	144	memcpy(&grh.dgid[0], attr->grh.dgid.raw,
	145	sizeof(attr->grh.dgid.raw));
	146	grh.pdid_hoplimit = cpu_to_be32((pdid << 16) \|
	147	(nxthdr << 8) \|
	148	attr->grh.hop_limit);
	149	memcpy((u8 *)ah->av + eth_sz, &grh, sizeof(struct ocrdma_grh));
	150	}
29565f2f	151	if (*isvlan)
fe2caefc	152	ah->av->valid \|= OCRDMA_AV_VLAN_VALID;
fe5e8a1a	153	ah->av->valid = cpu_to_le32(ah->av->valid);
fe2caefc PP	154	return status;
	155	}
	156
477864c8 MS	157	struct ib_ah ocrdma_create_ah(struct ib_pd ibpd, struct ib_ah_attr *attr,
477864c8 MS	158	struct ib_udata *udata)
fe2caefc PP	159	{
	160	u32 *ahid_addr;
	161	int status;
	162	struct ocrdma_ah *ah;
dbf727de MB	163	bool isvlan = false;
	164	u16 vlan_tag = 0xffff;
	165	struct ib_gid_attr sgid_attr;
fe2caefc	166	struct ocrdma_pd *pd = get_ocrdma_pd(ibpd);
f99b1649	167	struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device);
1be528bc	168	union ib_gid sgid;
fe2caefc PP	169
	170	if (!(attr->ah_flags & IB_AH_GRH))
	171	return ERR_PTR(-EINVAL);
	172
31dbdd9a SX	173	if (atomic_cmpxchg(&dev->update_sl, 1, 0))
31dbdd9a SX	174	ocrdma_init_service_level(dev);
6b062667	175
fad51b7d	176	ah = kzalloc(sizeof(*ah), GFP_ATOMIC);
fe2caefc PP	177	if (!ah)
fe2caefc PP	178	return ERR_PTR(-ENOMEM);
fe2caefc PP	179
	180	status = ocrdma_alloc_av(dev, ah);
	181	if (status)
	182	goto av_err;
1be528bc	183
dbf727de MB	184	status = ib_get_cached_gid(&dev->ibdev, 1, attr->grh.sgid_index, &sgid,
dbf727de MB	185	&sgid_attr);
1be528bc	186	if (status) {
	187	pr_err("%s(): Failed to query sgid, status = %d\n",
	188	__func__, status);
	189	goto av_conf_err;
	190	}
dbf727de MB	191	if (sgid_attr.ndev) {
	192	if (is_vlan_dev(sgid_attr.ndev))
	193	vlan_tag = vlan_dev_vlan_id(sgid_attr.ndev);
	194	dev_put(sgid_attr.ndev);
	195	}
6b062667 DS	196	/* Get network header type for this GID */
6b062667 DS	197	ah->hdr_type = ib_gid_to_network_type(sgid_attr.gid_type, &sgid);
1be528bc	198
d27b2f15 MA	199	if ((pd->uctx) &&
	200	(!rdma_is_multicast_addr((struct in6_addr *)attr->grh.dgid.raw)) &&
	201	(!rdma_link_local_addr((struct in6_addr *)attr->grh.dgid.raw))) {
f7f4b23e MB	202	status = rdma_addr_find_l2_eth_by_grh(&sgid, &attr->grh.dgid,
f7f4b23e MB	203	attr->dmac, &vlan_tag,
c3efe750 MB	204	&sgid_attr.ndev->ifindex,
c3efe750 MB	205	NULL);
1be528bc	206	if (status) {
	207	pr_err("%s(): Failed to resolve dmac from gid."
	208	"status = %d\n", __func__, status);
	209	goto av_conf_err;
	210	}
	211	}
	212
dbf727de	213	status = set_av_attr(dev, ah, attr, &sgid, pd->id, &isvlan, vlan_tag);
fe2caefc PP	214	if (status)
	215	goto av_conf_err;
	216
	217	/* if pd is for the user process, pass the ah_id to user space */
	218	if ((pd->uctx) && (pd->uctx->ah_tbl.va)) {
	219	ahid_addr = pd->uctx->ah_tbl.va + attr->dlid;
29565f2f DS	220	*ahid_addr = 0;
29565f2f DS	221	*ahid_addr \|= ah->id & OCRDMA_AH_ID_MASK;
834d16d6 DS	222	if (ocrdma_is_udp_encap_supported(dev)) {
	223	*ahid_addr \|= ((u32)ah->hdr_type &
	224	OCRDMA_AH_L3_TYPE_MASK) <<
	225	OCRDMA_AH_L3_TYPE_SHIFT;
	226	}
29565f2f DS	227	if (isvlan)
	228	*ahid_addr \|= (OCRDMA_AH_VLAN_VALID_MASK <<
	229	OCRDMA_AH_VLAN_VALID_SHIFT);
fe2caefc	230	}
29565f2f	231
fe2caefc PP	232	return &ah->ibah;
	233
	234	av_conf_err:
	235	ocrdma_free_av(dev, ah);
	236	av_err:
	237	kfree(ah);
	238	return ERR_PTR(status);
	239	}
	240
	241	int ocrdma_destroy_ah(struct ib_ah *ibah)
	242	{
	243	struct ocrdma_ah *ah = get_ocrdma_ah(ibah);
1afc0454 NG	244	struct ocrdma_dev *dev = get_ocrdma_dev(ibah->device);
	245
	246	ocrdma_free_av(dev, ah);
fe2caefc PP	247	kfree(ah);
	248	return 0;
	249	}
	250
	251	int ocrdma_query_ah(struct ib_ah ibah, struct ib_ah_attr attr)
	252	{
	253	struct ocrdma_ah *ah = get_ocrdma_ah(ibah);
	254	struct ocrdma_av *av = ah->av;
	255	struct ocrdma_grh *grh;
	256	attr->ah_flags \|= IB_AH_GRH;
f0c2c225	257	if (ah->av->valid & OCRDMA_AV_VALID) {
fe2caefc PP	258	grh = (struct ocrdma_grh )((u8 )ah->av +
	259	sizeof(struct ocrdma_eth_vlan));
	260	attr->sl = be16_to_cpu(av->eth_hdr.vlan_tag) >> 13;
	261	} else {
	262	grh = (struct ocrdma_grh )((u8 )ah->av +
	263	sizeof(struct ocrdma_eth_basic));
	264	attr->sl = 0;
	265	}
	266	memcpy(&attr->grh.dgid.raw[0], &grh->dgid[0], sizeof(grh->dgid));
	267	attr->grh.sgid_index = ah->sgid_index;
	268	attr->grh.hop_limit = be32_to_cpu(grh->pdid_hoplimit) & 0xff;
	269	attr->grh.traffic_class = be32_to_cpu(grh->tclass_flow) >> 24;
	270	attr->grh.flow_label = be32_to_cpu(grh->tclass_flow) & 0x00ffffffff;
	271	return 0;
	272	}
	273
	274	int ocrdma_modify_ah(struct ib_ah ibah, struct ib_ah_attr attr)
	275	{
	276	/* modify_ah is unsupported */
	277	return -ENOSYS;
	278	}
	279
	280	int ocrdma_process_mad(struct ib_device *ibdev,
	281	int process_mad_flags,
	282	u8 port_num,
a97e2d86 IW	283	const struct ib_wc *in_wc,
a97e2d86 IW	284	const struct ib_grh *in_grh,
4cd7c947 IW	285	const struct ib_mad_hdr *in, size_t in_mad_size,
	286	struct ib_mad_hdr out, size_t out_mad_size,
	287	u16 *out_mad_pkey_index)
fe2caefc	288	{
cad1fbb0 MA	289	int status;
cad1fbb0 MA	290	struct ocrdma_dev *dev;
4cd7c947 IW	291	const struct ib_mad in_mad = (const struct ib_mad )in;
	292	struct ib_mad out_mad = (struct ib_mad )out;
	293
3b8ab700 IW	294	if (WARN_ON_ONCE(in_mad_size != sizeof(*in_mad) \|\|
	295	out_mad_size != sizeof(out_mad)))
	296	return IB_MAD_RESULT_FAILURE;
cad1fbb0 MA	297
	298	switch (in_mad->mad_hdr.mgmt_class) {
	299	case IB_MGMT_CLASS_PERF_MGMT:
	300	dev = get_ocrdma_dev(ibdev);
	301	if (!ocrdma_pma_counters(dev, out_mad))
	302	status = IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_REPLY;
	303	else
	304	status = IB_MAD_RESULT_SUCCESS;
	305	break;
	306	default:
	307	status = IB_MAD_RESULT_SUCCESS;
	308	break;
	309	}
	310	return status;
fe2caefc	311	}