/* 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
*/
if ((attr->type != RDMA_AH_ATTR_TYPE_ROCE) ||
!(rdma_ah_get_ah_flags(attr) & IB_AH_GRH)) return -EINVAL;
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;
/* 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 + 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);
}
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