20c2df83d2
Slab destructors were no longer supported after Christoph's
c59def9f22 change. They've been
BUGs for both slab and slub, and slob never supported them
either.
This rips out support for the dtor pointer from kmem_cache_create()
completely and fixes up every single callsite in the kernel (there were
about 224, not including the slab allocator definitions themselves,
or the documentation references).
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
273 lines
8.1 KiB
C
273 lines
8.1 KiB
C
/*
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* IBM eServer eHCA Infiniband device driver for Linux on POWER
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*
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* adress vector functions
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*
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* Authors: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
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* Khadija Souissi <souissik@de.ibm.com>
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* Reinhard Ernst <rernst@de.ibm.com>
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* Christoph Raisch <raisch@de.ibm.com>
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*
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* Copyright (c) 2005 IBM Corporation
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*
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* All rights reserved.
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*
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* This source code is distributed under a dual license of GPL v2.0 and OpenIB
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* BSD.
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*
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* OpenIB BSD License
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <asm/current.h>
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#include "ehca_tools.h"
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#include "ehca_iverbs.h"
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#include "hcp_if.h"
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static struct kmem_cache *av_cache;
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struct ib_ah *ehca_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
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{
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int ret;
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struct ehca_av *av;
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struct ehca_shca *shca = container_of(pd->device, struct ehca_shca,
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ib_device);
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av = kmem_cache_alloc(av_cache, GFP_KERNEL);
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if (!av) {
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ehca_err(pd->device, "Out of memory pd=%p ah_attr=%p",
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pd, ah_attr);
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return ERR_PTR(-ENOMEM);
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}
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av->av.sl = ah_attr->sl;
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av->av.dlid = ah_attr->dlid;
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av->av.slid_path_bits = ah_attr->src_path_bits;
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if (ehca_static_rate < 0) {
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int ah_mult = ib_rate_to_mult(ah_attr->static_rate);
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int ehca_mult =
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ib_rate_to_mult(shca->sport[ah_attr->port_num].rate );
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if (ah_mult >= ehca_mult)
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av->av.ipd = 0;
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else
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av->av.ipd = (ah_mult > 0) ?
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((ehca_mult - 1) / ah_mult) : 0;
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} else
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av->av.ipd = ehca_static_rate;
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av->av.lnh = ah_attr->ah_flags;
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av->av.grh.word_0 = EHCA_BMASK_SET(GRH_IPVERSION_MASK, 6);
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av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_TCLASS_MASK,
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ah_attr->grh.traffic_class);
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av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_FLOWLABEL_MASK,
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ah_attr->grh.flow_label);
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av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_HOPLIMIT_MASK,
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ah_attr->grh.hop_limit);
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av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_NEXTHEADER_MASK, 0x1B);
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/* set sgid in grh.word_1 */
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if (ah_attr->ah_flags & IB_AH_GRH) {
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int rc;
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struct ib_port_attr port_attr;
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union ib_gid gid;
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memset(&port_attr, 0, sizeof(port_attr));
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rc = ehca_query_port(pd->device, ah_attr->port_num,
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&port_attr);
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if (rc) { /* invalid port number */
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ret = -EINVAL;
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ehca_err(pd->device, "Invalid port number "
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"ehca_query_port() returned %x "
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"pd=%p ah_attr=%p", rc, pd, ah_attr);
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goto create_ah_exit1;
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}
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memset(&gid, 0, sizeof(gid));
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rc = ehca_query_gid(pd->device,
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ah_attr->port_num,
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ah_attr->grh.sgid_index, &gid);
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if (rc) {
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ret = -EINVAL;
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ehca_err(pd->device, "Failed to retrieve sgid "
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"ehca_query_gid() returned %x "
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"pd=%p ah_attr=%p", rc, pd, ah_attr);
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goto create_ah_exit1;
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}
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memcpy(&av->av.grh.word_1, &gid, sizeof(gid));
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}
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av->av.pmtu = shca->max_mtu;
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/* dgid comes in grh.word_3 */
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memcpy(&av->av.grh.word_3, &ah_attr->grh.dgid,
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sizeof(ah_attr->grh.dgid));
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return &av->ib_ah;
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create_ah_exit1:
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kmem_cache_free(av_cache, av);
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return ERR_PTR(ret);
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}
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int ehca_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
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{
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struct ehca_av *av;
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struct ehca_ud_av new_ehca_av;
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struct ehca_pd *my_pd = container_of(ah->pd, struct ehca_pd, ib_pd);
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struct ehca_shca *shca = container_of(ah->pd->device, struct ehca_shca,
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ib_device);
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u32 cur_pid = current->tgid;
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if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
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my_pd->ownpid != cur_pid) {
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ehca_err(ah->device, "Invalid caller pid=%x ownpid=%x",
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cur_pid, my_pd->ownpid);
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return -EINVAL;
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}
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memset(&new_ehca_av, 0, sizeof(new_ehca_av));
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new_ehca_av.sl = ah_attr->sl;
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new_ehca_av.dlid = ah_attr->dlid;
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new_ehca_av.slid_path_bits = ah_attr->src_path_bits;
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new_ehca_av.ipd = ah_attr->static_rate;
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new_ehca_av.lnh = EHCA_BMASK_SET(GRH_FLAG_MASK,
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(ah_attr->ah_flags & IB_AH_GRH) > 0);
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new_ehca_av.grh.word_0 = EHCA_BMASK_SET(GRH_TCLASS_MASK,
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ah_attr->grh.traffic_class);
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new_ehca_av.grh.word_0 |= EHCA_BMASK_SET(GRH_FLOWLABEL_MASK,
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ah_attr->grh.flow_label);
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new_ehca_av.grh.word_0 |= EHCA_BMASK_SET(GRH_HOPLIMIT_MASK,
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ah_attr->grh.hop_limit);
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new_ehca_av.grh.word_0 |= EHCA_BMASK_SET(GRH_NEXTHEADER_MASK, 0x1b);
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/* set sgid in grh.word_1 */
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if (ah_attr->ah_flags & IB_AH_GRH) {
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int rc;
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struct ib_port_attr port_attr;
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union ib_gid gid;
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memset(&port_attr, 0, sizeof(port_attr));
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rc = ehca_query_port(ah->device, ah_attr->port_num,
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&port_attr);
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if (rc) { /* invalid port number */
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ehca_err(ah->device, "Invalid port number "
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"ehca_query_port() returned %x "
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"ah=%p ah_attr=%p port_num=%x",
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rc, ah, ah_attr, ah_attr->port_num);
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return -EINVAL;
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}
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memset(&gid, 0, sizeof(gid));
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rc = ehca_query_gid(ah->device,
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ah_attr->port_num,
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ah_attr->grh.sgid_index, &gid);
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if (rc) {
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ehca_err(ah->device, "Failed to retrieve sgid "
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"ehca_query_gid() returned %x "
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"ah=%p ah_attr=%p port_num=%x "
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"sgid_index=%x",
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rc, ah, ah_attr, ah_attr->port_num,
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ah_attr->grh.sgid_index);
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return -EINVAL;
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}
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memcpy(&new_ehca_av.grh.word_1, &gid, sizeof(gid));
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}
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new_ehca_av.pmtu = shca->max_mtu;
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memcpy(&new_ehca_av.grh.word_3, &ah_attr->grh.dgid,
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sizeof(ah_attr->grh.dgid));
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av = container_of(ah, struct ehca_av, ib_ah);
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av->av = new_ehca_av;
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return 0;
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}
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int ehca_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
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{
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struct ehca_av *av = container_of(ah, struct ehca_av, ib_ah);
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struct ehca_pd *my_pd = container_of(ah->pd, struct ehca_pd, ib_pd);
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u32 cur_pid = current->tgid;
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if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
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my_pd->ownpid != cur_pid) {
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ehca_err(ah->device, "Invalid caller pid=%x ownpid=%x",
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cur_pid, my_pd->ownpid);
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return -EINVAL;
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}
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memcpy(&ah_attr->grh.dgid, &av->av.grh.word_3,
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sizeof(ah_attr->grh.dgid));
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ah_attr->sl = av->av.sl;
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ah_attr->dlid = av->av.dlid;
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ah_attr->src_path_bits = av->av.slid_path_bits;
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ah_attr->static_rate = av->av.ipd;
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ah_attr->ah_flags = EHCA_BMASK_GET(GRH_FLAG_MASK, av->av.lnh);
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ah_attr->grh.traffic_class = EHCA_BMASK_GET(GRH_TCLASS_MASK,
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av->av.grh.word_0);
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ah_attr->grh.hop_limit = EHCA_BMASK_GET(GRH_HOPLIMIT_MASK,
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av->av.grh.word_0);
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ah_attr->grh.flow_label = EHCA_BMASK_GET(GRH_FLOWLABEL_MASK,
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av->av.grh.word_0);
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return 0;
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}
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int ehca_destroy_ah(struct ib_ah *ah)
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{
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struct ehca_pd *my_pd = container_of(ah->pd, struct ehca_pd, ib_pd);
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u32 cur_pid = current->tgid;
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if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
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my_pd->ownpid != cur_pid) {
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ehca_err(ah->device, "Invalid caller pid=%x ownpid=%x",
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cur_pid, my_pd->ownpid);
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return -EINVAL;
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}
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kmem_cache_free(av_cache, container_of(ah, struct ehca_av, ib_ah));
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return 0;
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}
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int ehca_init_av_cache(void)
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{
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av_cache = kmem_cache_create("ehca_cache_av",
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sizeof(struct ehca_av), 0,
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SLAB_HWCACHE_ALIGN,
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NULL);
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if (!av_cache)
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return -ENOMEM;
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return 0;
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}
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void ehca_cleanup_av_cache(void)
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{
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if (av_cache)
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kmem_cache_destroy(av_cache);
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}
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