1258 строки
35 KiB
C
1258 строки
35 KiB
C
/*
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* Copyright (c) 2012 Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <rdma/ib_mad.h>
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#include <rdma/ib_smi.h>
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#include <rdma/ib_cache.h>
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#include <rdma/ib_sa.h>
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#include <linux/mlx4/cmd.h>
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#include <linux/rbtree.h>
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#include <linux/delay.h>
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#include "mlx4_ib.h"
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#define MAX_VFS 80
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#define MAX_PEND_REQS_PER_FUNC 4
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#define MAD_TIMEOUT_MS 2000
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#define mcg_warn(fmt, arg...) pr_warn("MCG WARNING: " fmt, ##arg)
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#define mcg_error(fmt, arg...) pr_err(fmt, ##arg)
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#define mcg_warn_group(group, format, arg...) \
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pr_warn("%s-%d: %16s (port %d): WARNING: " format, __func__, __LINE__,\
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(group)->name, group->demux->port, ## arg)
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#define mcg_error_group(group, format, arg...) \
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pr_err(" %16s: " format, (group)->name, ## arg)
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static union ib_gid mgid0;
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static struct workqueue_struct *clean_wq;
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enum mcast_state {
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MCAST_NOT_MEMBER = 0,
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MCAST_MEMBER,
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};
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enum mcast_group_state {
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MCAST_IDLE,
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MCAST_JOIN_SENT,
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MCAST_LEAVE_SENT,
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MCAST_RESP_READY
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};
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struct mcast_member {
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enum mcast_state state;
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uint8_t join_state;
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int num_pend_reqs;
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struct list_head pending;
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};
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struct ib_sa_mcmember_data {
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union ib_gid mgid;
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union ib_gid port_gid;
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__be32 qkey;
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__be16 mlid;
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u8 mtusel_mtu;
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u8 tclass;
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__be16 pkey;
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u8 ratesel_rate;
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u8 lifetmsel_lifetm;
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__be32 sl_flowlabel_hoplimit;
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u8 scope_join_state;
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u8 proxy_join;
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u8 reserved[2];
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};
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struct mcast_group {
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struct ib_sa_mcmember_data rec;
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struct rb_node node;
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struct list_head mgid0_list;
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struct mlx4_ib_demux_ctx *demux;
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struct mcast_member func[MAX_VFS];
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struct mutex lock;
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struct work_struct work;
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struct list_head pending_list;
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int members[3];
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enum mcast_group_state state;
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enum mcast_group_state prev_state;
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struct ib_sa_mad response_sa_mad;
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__be64 last_req_tid;
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char name[33]; /* MGID string */
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struct device_attribute dentry;
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/* refcount is the reference count for the following:
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1. Each queued request
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2. Each invocation of the worker thread
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3. Membership of the port at the SA
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*/
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atomic_t refcount;
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/* delayed work to clean pending SM request */
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struct delayed_work timeout_work;
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struct list_head cleanup_list;
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};
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struct mcast_req {
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int func;
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struct ib_sa_mad sa_mad;
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struct list_head group_list;
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struct list_head func_list;
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struct mcast_group *group;
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int clean;
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};
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#define safe_atomic_dec(ref) \
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do {\
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if (atomic_dec_and_test(ref)) \
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mcg_warn_group(group, "did not expect to reach zero\n"); \
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} while (0)
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static const char *get_state_string(enum mcast_group_state state)
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{
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switch (state) {
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case MCAST_IDLE:
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return "MCAST_IDLE";
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case MCAST_JOIN_SENT:
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return "MCAST_JOIN_SENT";
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case MCAST_LEAVE_SENT:
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return "MCAST_LEAVE_SENT";
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case MCAST_RESP_READY:
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return "MCAST_RESP_READY";
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}
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return "Invalid State";
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}
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static struct mcast_group *mcast_find(struct mlx4_ib_demux_ctx *ctx,
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union ib_gid *mgid)
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{
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struct rb_node *node = ctx->mcg_table.rb_node;
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struct mcast_group *group;
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int ret;
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while (node) {
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group = rb_entry(node, struct mcast_group, node);
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ret = memcmp(mgid->raw, group->rec.mgid.raw, sizeof *mgid);
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if (!ret)
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return group;
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if (ret < 0)
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node = node->rb_left;
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else
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node = node->rb_right;
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}
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return NULL;
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}
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static struct mcast_group *mcast_insert(struct mlx4_ib_demux_ctx *ctx,
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struct mcast_group *group)
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{
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struct rb_node **link = &ctx->mcg_table.rb_node;
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struct rb_node *parent = NULL;
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struct mcast_group *cur_group;
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int ret;
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while (*link) {
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parent = *link;
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cur_group = rb_entry(parent, struct mcast_group, node);
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ret = memcmp(group->rec.mgid.raw, cur_group->rec.mgid.raw,
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sizeof group->rec.mgid);
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if (ret < 0)
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link = &(*link)->rb_left;
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else if (ret > 0)
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link = &(*link)->rb_right;
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else
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return cur_group;
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}
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rb_link_node(&group->node, parent, link);
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rb_insert_color(&group->node, &ctx->mcg_table);
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return NULL;
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}
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static int send_mad_to_wire(struct mlx4_ib_demux_ctx *ctx, struct ib_mad *mad)
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{
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struct mlx4_ib_dev *dev = ctx->dev;
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struct ib_ah_attr ah_attr;
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spin_lock(&dev->sm_lock);
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if (!dev->sm_ah[ctx->port - 1]) {
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/* port is not yet Active, sm_ah not ready */
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spin_unlock(&dev->sm_lock);
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return -EAGAIN;
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}
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mlx4_ib_query_ah(dev->sm_ah[ctx->port - 1], &ah_attr);
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spin_unlock(&dev->sm_lock);
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return mlx4_ib_send_to_wire(dev, mlx4_master_func_num(dev->dev),
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ctx->port, IB_QPT_GSI, 0, 1, IB_QP1_QKEY,
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&ah_attr, NULL, mad);
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}
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static int send_mad_to_slave(int slave, struct mlx4_ib_demux_ctx *ctx,
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struct ib_mad *mad)
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{
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struct mlx4_ib_dev *dev = ctx->dev;
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struct ib_mad_agent *agent = dev->send_agent[ctx->port - 1][1];
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struct ib_wc wc;
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struct ib_ah_attr ah_attr;
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/* Our agent might not yet be registered when mads start to arrive */
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if (!agent)
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return -EAGAIN;
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ib_query_ah(dev->sm_ah[ctx->port - 1], &ah_attr);
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if (ib_find_cached_pkey(&dev->ib_dev, ctx->port, IB_DEFAULT_PKEY_FULL, &wc.pkey_index))
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return -EINVAL;
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wc.sl = 0;
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wc.dlid_path_bits = 0;
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wc.port_num = ctx->port;
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wc.slid = ah_attr.dlid; /* opensm lid */
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wc.src_qp = 1;
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return mlx4_ib_send_to_slave(dev, slave, ctx->port, IB_QPT_GSI, &wc, NULL, mad);
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}
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static int send_join_to_wire(struct mcast_group *group, struct ib_sa_mad *sa_mad)
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{
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struct ib_sa_mad mad;
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struct ib_sa_mcmember_data *sa_mad_data = (struct ib_sa_mcmember_data *)&mad.data;
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int ret;
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/* we rely on a mad request as arrived from a VF */
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memcpy(&mad, sa_mad, sizeof mad);
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/* fix port GID to be the real one (slave 0) */
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sa_mad_data->port_gid.global.interface_id = group->demux->guid_cache[0];
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/* assign our own TID */
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mad.mad_hdr.tid = mlx4_ib_get_new_demux_tid(group->demux);
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group->last_req_tid = mad.mad_hdr.tid; /* keep it for later validation */
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ret = send_mad_to_wire(group->demux, (struct ib_mad *)&mad);
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/* set timeout handler */
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if (!ret) {
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/* calls mlx4_ib_mcg_timeout_handler */
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queue_delayed_work(group->demux->mcg_wq, &group->timeout_work,
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msecs_to_jiffies(MAD_TIMEOUT_MS));
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}
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return ret;
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}
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static int send_leave_to_wire(struct mcast_group *group, u8 join_state)
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{
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struct ib_sa_mad mad;
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struct ib_sa_mcmember_data *sa_data = (struct ib_sa_mcmember_data *)&mad.data;
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int ret;
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memset(&mad, 0, sizeof mad);
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mad.mad_hdr.base_version = 1;
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mad.mad_hdr.mgmt_class = IB_MGMT_CLASS_SUBN_ADM;
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mad.mad_hdr.class_version = 2;
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mad.mad_hdr.method = IB_SA_METHOD_DELETE;
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mad.mad_hdr.status = cpu_to_be16(0);
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mad.mad_hdr.class_specific = cpu_to_be16(0);
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mad.mad_hdr.tid = mlx4_ib_get_new_demux_tid(group->demux);
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group->last_req_tid = mad.mad_hdr.tid; /* keep it for later validation */
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mad.mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_MC_MEMBER_REC);
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mad.mad_hdr.attr_mod = cpu_to_be32(0);
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mad.sa_hdr.sm_key = 0x0;
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mad.sa_hdr.attr_offset = cpu_to_be16(7);
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mad.sa_hdr.comp_mask = IB_SA_MCMEMBER_REC_MGID |
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IB_SA_MCMEMBER_REC_PORT_GID | IB_SA_MCMEMBER_REC_JOIN_STATE;
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*sa_data = group->rec;
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sa_data->scope_join_state = join_state;
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ret = send_mad_to_wire(group->demux, (struct ib_mad *)&mad);
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if (ret)
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group->state = MCAST_IDLE;
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/* set timeout handler */
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if (!ret) {
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/* calls mlx4_ib_mcg_timeout_handler */
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queue_delayed_work(group->demux->mcg_wq, &group->timeout_work,
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msecs_to_jiffies(MAD_TIMEOUT_MS));
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}
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return ret;
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}
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static int send_reply_to_slave(int slave, struct mcast_group *group,
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struct ib_sa_mad *req_sa_mad, u16 status)
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{
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struct ib_sa_mad mad;
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struct ib_sa_mcmember_data *sa_data = (struct ib_sa_mcmember_data *)&mad.data;
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struct ib_sa_mcmember_data *req_sa_data = (struct ib_sa_mcmember_data *)&req_sa_mad->data;
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int ret;
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memset(&mad, 0, sizeof mad);
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mad.mad_hdr.base_version = 1;
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mad.mad_hdr.mgmt_class = IB_MGMT_CLASS_SUBN_ADM;
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mad.mad_hdr.class_version = 2;
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mad.mad_hdr.method = IB_MGMT_METHOD_GET_RESP;
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mad.mad_hdr.status = cpu_to_be16(status);
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mad.mad_hdr.class_specific = cpu_to_be16(0);
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mad.mad_hdr.tid = req_sa_mad->mad_hdr.tid;
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*(u8 *)&mad.mad_hdr.tid = 0; /* resetting tid to 0 */
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mad.mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_MC_MEMBER_REC);
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mad.mad_hdr.attr_mod = cpu_to_be32(0);
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mad.sa_hdr.sm_key = req_sa_mad->sa_hdr.sm_key;
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mad.sa_hdr.attr_offset = cpu_to_be16(7);
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mad.sa_hdr.comp_mask = 0; /* ignored on responses, see IBTA spec */
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*sa_data = group->rec;
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/* reconstruct VF's requested join_state and port_gid */
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sa_data->scope_join_state &= 0xf0;
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sa_data->scope_join_state |= (group->func[slave].join_state & 0x0f);
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memcpy(&sa_data->port_gid, &req_sa_data->port_gid, sizeof req_sa_data->port_gid);
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ret = send_mad_to_slave(slave, group->demux, (struct ib_mad *)&mad);
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return ret;
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}
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static int check_selector(ib_sa_comp_mask comp_mask,
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ib_sa_comp_mask selector_mask,
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ib_sa_comp_mask value_mask,
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u8 src_value, u8 dst_value)
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{
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int err;
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u8 selector = dst_value >> 6;
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dst_value &= 0x3f;
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src_value &= 0x3f;
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if (!(comp_mask & selector_mask) || !(comp_mask & value_mask))
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return 0;
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switch (selector) {
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case IB_SA_GT:
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err = (src_value <= dst_value);
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break;
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case IB_SA_LT:
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err = (src_value >= dst_value);
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break;
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case IB_SA_EQ:
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err = (src_value != dst_value);
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break;
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default:
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err = 0;
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break;
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}
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return err;
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}
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static u16 cmp_rec(struct ib_sa_mcmember_data *src,
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struct ib_sa_mcmember_data *dst, ib_sa_comp_mask comp_mask)
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{
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/* src is group record, dst is request record */
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/* MGID must already match */
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/* Port_GID we always replace to our Port_GID, so it is a match */
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#define MAD_STATUS_REQ_INVALID 0x0200
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if (comp_mask & IB_SA_MCMEMBER_REC_QKEY && src->qkey != dst->qkey)
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return MAD_STATUS_REQ_INVALID;
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if (comp_mask & IB_SA_MCMEMBER_REC_MLID && src->mlid != dst->mlid)
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return MAD_STATUS_REQ_INVALID;
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if (check_selector(comp_mask, IB_SA_MCMEMBER_REC_MTU_SELECTOR,
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IB_SA_MCMEMBER_REC_MTU,
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src->mtusel_mtu, dst->mtusel_mtu))
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return MAD_STATUS_REQ_INVALID;
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if (comp_mask & IB_SA_MCMEMBER_REC_TRAFFIC_CLASS &&
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src->tclass != dst->tclass)
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return MAD_STATUS_REQ_INVALID;
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if (comp_mask & IB_SA_MCMEMBER_REC_PKEY && src->pkey != dst->pkey)
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return MAD_STATUS_REQ_INVALID;
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if (check_selector(comp_mask, IB_SA_MCMEMBER_REC_RATE_SELECTOR,
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IB_SA_MCMEMBER_REC_RATE,
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src->ratesel_rate, dst->ratesel_rate))
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return MAD_STATUS_REQ_INVALID;
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if (check_selector(comp_mask,
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IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME_SELECTOR,
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IB_SA_MCMEMBER_REC_PACKET_LIFE_TIME,
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src->lifetmsel_lifetm, dst->lifetmsel_lifetm))
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return MAD_STATUS_REQ_INVALID;
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if (comp_mask & IB_SA_MCMEMBER_REC_SL &&
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(be32_to_cpu(src->sl_flowlabel_hoplimit) & 0xf0000000) !=
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(be32_to_cpu(dst->sl_flowlabel_hoplimit) & 0xf0000000))
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return MAD_STATUS_REQ_INVALID;
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if (comp_mask & IB_SA_MCMEMBER_REC_FLOW_LABEL &&
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(be32_to_cpu(src->sl_flowlabel_hoplimit) & 0x0fffff00) !=
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(be32_to_cpu(dst->sl_flowlabel_hoplimit) & 0x0fffff00))
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return MAD_STATUS_REQ_INVALID;
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if (comp_mask & IB_SA_MCMEMBER_REC_HOP_LIMIT &&
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(be32_to_cpu(src->sl_flowlabel_hoplimit) & 0x000000ff) !=
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(be32_to_cpu(dst->sl_flowlabel_hoplimit) & 0x000000ff))
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return MAD_STATUS_REQ_INVALID;
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if (comp_mask & IB_SA_MCMEMBER_REC_SCOPE &&
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(src->scope_join_state & 0xf0) !=
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(dst->scope_join_state & 0xf0))
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return MAD_STATUS_REQ_INVALID;
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/* join_state checked separately, proxy_join ignored */
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return 0;
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}
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/* release group, return 1 if this was last release and group is destroyed
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* timout work is canceled sync */
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static int release_group(struct mcast_group *group, int from_timeout_handler)
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{
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struct mlx4_ib_demux_ctx *ctx = group->demux;
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int nzgroup;
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mutex_lock(&ctx->mcg_table_lock);
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mutex_lock(&group->lock);
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if (atomic_dec_and_test(&group->refcount)) {
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if (!from_timeout_handler) {
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if (group->state != MCAST_IDLE &&
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!cancel_delayed_work(&group->timeout_work)) {
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atomic_inc(&group->refcount);
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mutex_unlock(&group->lock);
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mutex_unlock(&ctx->mcg_table_lock);
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return 0;
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}
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}
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nzgroup = memcmp(&group->rec.mgid, &mgid0, sizeof mgid0);
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if (nzgroup)
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del_sysfs_port_mcg_attr(ctx->dev, ctx->port, &group->dentry.attr);
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if (!list_empty(&group->pending_list))
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mcg_warn_group(group, "releasing a group with non empty pending list\n");
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if (nzgroup)
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rb_erase(&group->node, &ctx->mcg_table);
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list_del_init(&group->mgid0_list);
|
|
mutex_unlock(&group->lock);
|
|
mutex_unlock(&ctx->mcg_table_lock);
|
|
kfree(group);
|
|
return 1;
|
|
} else {
|
|
mutex_unlock(&group->lock);
|
|
mutex_unlock(&ctx->mcg_table_lock);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void adjust_membership(struct mcast_group *group, u8 join_state, int inc)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 3; i++, join_state >>= 1)
|
|
if (join_state & 0x1)
|
|
group->members[i] += inc;
|
|
}
|
|
|
|
static u8 get_leave_state(struct mcast_group *group)
|
|
{
|
|
u8 leave_state = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < 3; i++)
|
|
if (!group->members[i])
|
|
leave_state |= (1 << i);
|
|
|
|
return leave_state & (group->rec.scope_join_state & 7);
|
|
}
|
|
|
|
static int join_group(struct mcast_group *group, int slave, u8 join_mask)
|
|
{
|
|
int ret = 0;
|
|
u8 join_state;
|
|
|
|
/* remove bits that slave is already member of, and adjust */
|
|
join_state = join_mask & (~group->func[slave].join_state);
|
|
adjust_membership(group, join_state, 1);
|
|
group->func[slave].join_state |= join_state;
|
|
if (group->func[slave].state != MCAST_MEMBER && join_state) {
|
|
group->func[slave].state = MCAST_MEMBER;
|
|
ret = 1;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int leave_group(struct mcast_group *group, int slave, u8 leave_state)
|
|
{
|
|
int ret = 0;
|
|
|
|
adjust_membership(group, leave_state, -1);
|
|
group->func[slave].join_state &= ~leave_state;
|
|
if (!group->func[slave].join_state) {
|
|
group->func[slave].state = MCAST_NOT_MEMBER;
|
|
ret = 1;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int check_leave(struct mcast_group *group, int slave, u8 leave_mask)
|
|
{
|
|
if (group->func[slave].state != MCAST_MEMBER)
|
|
return MAD_STATUS_REQ_INVALID;
|
|
|
|
/* make sure we're not deleting unset bits */
|
|
if (~group->func[slave].join_state & leave_mask)
|
|
return MAD_STATUS_REQ_INVALID;
|
|
|
|
if (!leave_mask)
|
|
return MAD_STATUS_REQ_INVALID;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mlx4_ib_mcg_timeout_handler(struct work_struct *work)
|
|
{
|
|
struct delayed_work *delay = to_delayed_work(work);
|
|
struct mcast_group *group;
|
|
struct mcast_req *req = NULL;
|
|
|
|
group = container_of(delay, typeof(*group), timeout_work);
|
|
|
|
mutex_lock(&group->lock);
|
|
if (group->state == MCAST_JOIN_SENT) {
|
|
if (!list_empty(&group->pending_list)) {
|
|
req = list_first_entry(&group->pending_list, struct mcast_req, group_list);
|
|
list_del(&req->group_list);
|
|
list_del(&req->func_list);
|
|
--group->func[req->func].num_pend_reqs;
|
|
mutex_unlock(&group->lock);
|
|
kfree(req);
|
|
if (memcmp(&group->rec.mgid, &mgid0, sizeof mgid0)) {
|
|
if (release_group(group, 1))
|
|
return;
|
|
} else {
|
|
kfree(group);
|
|
return;
|
|
}
|
|
mutex_lock(&group->lock);
|
|
} else
|
|
mcg_warn_group(group, "DRIVER BUG\n");
|
|
} else if (group->state == MCAST_LEAVE_SENT) {
|
|
if (group->rec.scope_join_state & 7)
|
|
group->rec.scope_join_state &= 0xf8;
|
|
group->state = MCAST_IDLE;
|
|
mutex_unlock(&group->lock);
|
|
if (release_group(group, 1))
|
|
return;
|
|
mutex_lock(&group->lock);
|
|
} else
|
|
mcg_warn_group(group, "invalid state %s\n", get_state_string(group->state));
|
|
group->state = MCAST_IDLE;
|
|
atomic_inc(&group->refcount);
|
|
if (!queue_work(group->demux->mcg_wq, &group->work))
|
|
safe_atomic_dec(&group->refcount);
|
|
|
|
mutex_unlock(&group->lock);
|
|
}
|
|
|
|
static int handle_leave_req(struct mcast_group *group, u8 leave_mask,
|
|
struct mcast_req *req)
|
|
{
|
|
u16 status;
|
|
|
|
if (req->clean)
|
|
leave_mask = group->func[req->func].join_state;
|
|
|
|
status = check_leave(group, req->func, leave_mask);
|
|
if (!status)
|
|
leave_group(group, req->func, leave_mask);
|
|
|
|
if (!req->clean)
|
|
send_reply_to_slave(req->func, group, &req->sa_mad, status);
|
|
--group->func[req->func].num_pend_reqs;
|
|
list_del(&req->group_list);
|
|
list_del(&req->func_list);
|
|
kfree(req);
|
|
return 1;
|
|
}
|
|
|
|
static int handle_join_req(struct mcast_group *group, u8 join_mask,
|
|
struct mcast_req *req)
|
|
{
|
|
u8 group_join_state = group->rec.scope_join_state & 7;
|
|
int ref = 0;
|
|
u16 status;
|
|
struct ib_sa_mcmember_data *sa_data = (struct ib_sa_mcmember_data *)req->sa_mad.data;
|
|
|
|
if (join_mask == (group_join_state & join_mask)) {
|
|
/* port's membership need not change */
|
|
status = cmp_rec(&group->rec, sa_data, req->sa_mad.sa_hdr.comp_mask);
|
|
if (!status)
|
|
join_group(group, req->func, join_mask);
|
|
|
|
--group->func[req->func].num_pend_reqs;
|
|
send_reply_to_slave(req->func, group, &req->sa_mad, status);
|
|
list_del(&req->group_list);
|
|
list_del(&req->func_list);
|
|
kfree(req);
|
|
++ref;
|
|
} else {
|
|
/* port's membership needs to be updated */
|
|
group->prev_state = group->state;
|
|
if (send_join_to_wire(group, &req->sa_mad)) {
|
|
--group->func[req->func].num_pend_reqs;
|
|
list_del(&req->group_list);
|
|
list_del(&req->func_list);
|
|
kfree(req);
|
|
ref = 1;
|
|
group->state = group->prev_state;
|
|
} else
|
|
group->state = MCAST_JOIN_SENT;
|
|
}
|
|
|
|
return ref;
|
|
}
|
|
|
|
static void mlx4_ib_mcg_work_handler(struct work_struct *work)
|
|
{
|
|
struct mcast_group *group;
|
|
struct mcast_req *req = NULL;
|
|
struct ib_sa_mcmember_data *sa_data;
|
|
u8 req_join_state;
|
|
int rc = 1; /* release_count - this is for the scheduled work */
|
|
u16 status;
|
|
u8 method;
|
|
|
|
group = container_of(work, typeof(*group), work);
|
|
|
|
mutex_lock(&group->lock);
|
|
|
|
/* First, let's see if a response from SM is waiting regarding this group.
|
|
* If so, we need to update the group's REC. If this is a bad response, we
|
|
* may need to send a bad response to a VF waiting for it. If VF is waiting
|
|
* and this is a good response, the VF will be answered later in this func. */
|
|
if (group->state == MCAST_RESP_READY) {
|
|
/* cancels mlx4_ib_mcg_timeout_handler */
|
|
cancel_delayed_work(&group->timeout_work);
|
|
status = be16_to_cpu(group->response_sa_mad.mad_hdr.status);
|
|
method = group->response_sa_mad.mad_hdr.method;
|
|
if (group->last_req_tid != group->response_sa_mad.mad_hdr.tid) {
|
|
mcg_warn_group(group, "Got MAD response to existing MGID but wrong TID, dropping. Resp TID=%llx, group TID=%llx\n",
|
|
be64_to_cpu(group->response_sa_mad.mad_hdr.tid),
|
|
be64_to_cpu(group->last_req_tid));
|
|
group->state = group->prev_state;
|
|
goto process_requests;
|
|
}
|
|
if (status) {
|
|
if (!list_empty(&group->pending_list))
|
|
req = list_first_entry(&group->pending_list,
|
|
struct mcast_req, group_list);
|
|
if ((method == IB_MGMT_METHOD_GET_RESP)) {
|
|
if (req) {
|
|
send_reply_to_slave(req->func, group, &req->sa_mad, status);
|
|
--group->func[req->func].num_pend_reqs;
|
|
list_del(&req->group_list);
|
|
list_del(&req->func_list);
|
|
kfree(req);
|
|
++rc;
|
|
} else
|
|
mcg_warn_group(group, "no request for failed join\n");
|
|
} else if (method == IB_SA_METHOD_DELETE_RESP && group->demux->flushing)
|
|
++rc;
|
|
} else {
|
|
u8 resp_join_state;
|
|
u8 cur_join_state;
|
|
|
|
resp_join_state = ((struct ib_sa_mcmember_data *)
|
|
group->response_sa_mad.data)->scope_join_state & 7;
|
|
cur_join_state = group->rec.scope_join_state & 7;
|
|
|
|
if (method == IB_MGMT_METHOD_GET_RESP) {
|
|
/* successfull join */
|
|
if (!cur_join_state && resp_join_state)
|
|
--rc;
|
|
} else if (!resp_join_state)
|
|
++rc;
|
|
memcpy(&group->rec, group->response_sa_mad.data, sizeof group->rec);
|
|
}
|
|
group->state = MCAST_IDLE;
|
|
}
|
|
|
|
process_requests:
|
|
/* We should now go over pending join/leave requests, as long as we are idle. */
|
|
while (!list_empty(&group->pending_list) && group->state == MCAST_IDLE) {
|
|
req = list_first_entry(&group->pending_list, struct mcast_req,
|
|
group_list);
|
|
sa_data = (struct ib_sa_mcmember_data *)req->sa_mad.data;
|
|
req_join_state = sa_data->scope_join_state & 0x7;
|
|
|
|
/* For a leave request, we will immediately answer the VF, and
|
|
* update our internal counters. The actual leave will be sent
|
|
* to SM later, if at all needed. We dequeue the request now. */
|
|
if (req->sa_mad.mad_hdr.method == IB_SA_METHOD_DELETE)
|
|
rc += handle_leave_req(group, req_join_state, req);
|
|
else
|
|
rc += handle_join_req(group, req_join_state, req);
|
|
}
|
|
|
|
/* Handle leaves */
|
|
if (group->state == MCAST_IDLE) {
|
|
req_join_state = get_leave_state(group);
|
|
if (req_join_state) {
|
|
group->rec.scope_join_state &= ~req_join_state;
|
|
group->prev_state = group->state;
|
|
if (send_leave_to_wire(group, req_join_state)) {
|
|
group->state = group->prev_state;
|
|
++rc;
|
|
} else
|
|
group->state = MCAST_LEAVE_SENT;
|
|
}
|
|
}
|
|
|
|
if (!list_empty(&group->pending_list) && group->state == MCAST_IDLE)
|
|
goto process_requests;
|
|
mutex_unlock(&group->lock);
|
|
|
|
while (rc--)
|
|
release_group(group, 0);
|
|
}
|
|
|
|
static struct mcast_group *search_relocate_mgid0_group(struct mlx4_ib_demux_ctx *ctx,
|
|
__be64 tid,
|
|
union ib_gid *new_mgid)
|
|
{
|
|
struct mcast_group *group = NULL, *cur_group;
|
|
struct mcast_req *req;
|
|
struct list_head *pos;
|
|
struct list_head *n;
|
|
|
|
mutex_lock(&ctx->mcg_table_lock);
|
|
list_for_each_safe(pos, n, &ctx->mcg_mgid0_list) {
|
|
group = list_entry(pos, struct mcast_group, mgid0_list);
|
|
mutex_lock(&group->lock);
|
|
if (group->last_req_tid == tid) {
|
|
if (memcmp(new_mgid, &mgid0, sizeof mgid0)) {
|
|
group->rec.mgid = *new_mgid;
|
|
sprintf(group->name, "%016llx%016llx",
|
|
be64_to_cpu(group->rec.mgid.global.subnet_prefix),
|
|
be64_to_cpu(group->rec.mgid.global.interface_id));
|
|
list_del_init(&group->mgid0_list);
|
|
cur_group = mcast_insert(ctx, group);
|
|
if (cur_group) {
|
|
/* A race between our code and SM. Silently cleaning the new one */
|
|
req = list_first_entry(&group->pending_list,
|
|
struct mcast_req, group_list);
|
|
--group->func[req->func].num_pend_reqs;
|
|
list_del(&req->group_list);
|
|
list_del(&req->func_list);
|
|
kfree(req);
|
|
mutex_unlock(&group->lock);
|
|
mutex_unlock(&ctx->mcg_table_lock);
|
|
release_group(group, 0);
|
|
return NULL;
|
|
}
|
|
|
|
atomic_inc(&group->refcount);
|
|
add_sysfs_port_mcg_attr(ctx->dev, ctx->port, &group->dentry.attr);
|
|
mutex_unlock(&group->lock);
|
|
mutex_unlock(&ctx->mcg_table_lock);
|
|
return group;
|
|
} else {
|
|
struct mcast_req *tmp1, *tmp2;
|
|
|
|
list_del(&group->mgid0_list);
|
|
if (!list_empty(&group->pending_list) && group->state != MCAST_IDLE)
|
|
cancel_delayed_work_sync(&group->timeout_work);
|
|
|
|
list_for_each_entry_safe(tmp1, tmp2, &group->pending_list, group_list) {
|
|
list_del(&tmp1->group_list);
|
|
kfree(tmp1);
|
|
}
|
|
mutex_unlock(&group->lock);
|
|
mutex_unlock(&ctx->mcg_table_lock);
|
|
kfree(group);
|
|
return NULL;
|
|
}
|
|
}
|
|
mutex_unlock(&group->lock);
|
|
}
|
|
mutex_unlock(&ctx->mcg_table_lock);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static ssize_t sysfs_show_group(struct device *dev,
|
|
struct device_attribute *attr, char *buf);
|
|
|
|
static struct mcast_group *acquire_group(struct mlx4_ib_demux_ctx *ctx,
|
|
union ib_gid *mgid, int create,
|
|
gfp_t gfp_mask)
|
|
{
|
|
struct mcast_group *group, *cur_group;
|
|
int is_mgid0;
|
|
int i;
|
|
|
|
is_mgid0 = !memcmp(&mgid0, mgid, sizeof mgid0);
|
|
if (!is_mgid0) {
|
|
group = mcast_find(ctx, mgid);
|
|
if (group)
|
|
goto found;
|
|
}
|
|
|
|
if (!create)
|
|
return ERR_PTR(-ENOENT);
|
|
|
|
group = kzalloc(sizeof *group, gfp_mask);
|
|
if (!group)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
group->demux = ctx;
|
|
group->rec.mgid = *mgid;
|
|
INIT_LIST_HEAD(&group->pending_list);
|
|
INIT_LIST_HEAD(&group->mgid0_list);
|
|
for (i = 0; i < MAX_VFS; ++i)
|
|
INIT_LIST_HEAD(&group->func[i].pending);
|
|
INIT_WORK(&group->work, mlx4_ib_mcg_work_handler);
|
|
INIT_DELAYED_WORK(&group->timeout_work, mlx4_ib_mcg_timeout_handler);
|
|
mutex_init(&group->lock);
|
|
sprintf(group->name, "%016llx%016llx",
|
|
be64_to_cpu(group->rec.mgid.global.subnet_prefix),
|
|
be64_to_cpu(group->rec.mgid.global.interface_id));
|
|
sysfs_attr_init(&group->dentry.attr);
|
|
group->dentry.show = sysfs_show_group;
|
|
group->dentry.store = NULL;
|
|
group->dentry.attr.name = group->name;
|
|
group->dentry.attr.mode = 0400;
|
|
group->state = MCAST_IDLE;
|
|
|
|
if (is_mgid0) {
|
|
list_add(&group->mgid0_list, &ctx->mcg_mgid0_list);
|
|
goto found;
|
|
}
|
|
|
|
cur_group = mcast_insert(ctx, group);
|
|
if (cur_group) {
|
|
mcg_warn("group just showed up %s - confused\n", cur_group->name);
|
|
kfree(group);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
add_sysfs_port_mcg_attr(ctx->dev, ctx->port, &group->dentry.attr);
|
|
|
|
found:
|
|
atomic_inc(&group->refcount);
|
|
return group;
|
|
}
|
|
|
|
static void queue_req(struct mcast_req *req)
|
|
{
|
|
struct mcast_group *group = req->group;
|
|
|
|
atomic_inc(&group->refcount); /* for the request */
|
|
atomic_inc(&group->refcount); /* for scheduling the work */
|
|
list_add_tail(&req->group_list, &group->pending_list);
|
|
list_add_tail(&req->func_list, &group->func[req->func].pending);
|
|
/* calls mlx4_ib_mcg_work_handler */
|
|
if (!queue_work(group->demux->mcg_wq, &group->work))
|
|
safe_atomic_dec(&group->refcount);
|
|
}
|
|
|
|
int mlx4_ib_mcg_demux_handler(struct ib_device *ibdev, int port, int slave,
|
|
struct ib_sa_mad *mad)
|
|
{
|
|
struct mlx4_ib_dev *dev = to_mdev(ibdev);
|
|
struct ib_sa_mcmember_data *rec = (struct ib_sa_mcmember_data *)mad->data;
|
|
struct mlx4_ib_demux_ctx *ctx = &dev->sriov.demux[port - 1];
|
|
struct mcast_group *group;
|
|
|
|
switch (mad->mad_hdr.method) {
|
|
case IB_MGMT_METHOD_GET_RESP:
|
|
case IB_SA_METHOD_DELETE_RESP:
|
|
mutex_lock(&ctx->mcg_table_lock);
|
|
group = acquire_group(ctx, &rec->mgid, 0, GFP_KERNEL);
|
|
mutex_unlock(&ctx->mcg_table_lock);
|
|
if (IS_ERR(group)) {
|
|
if (mad->mad_hdr.method == IB_MGMT_METHOD_GET_RESP) {
|
|
__be64 tid = mad->mad_hdr.tid;
|
|
*(u8 *)(&tid) = (u8)slave; /* in group we kept the modified TID */
|
|
group = search_relocate_mgid0_group(ctx, tid, &rec->mgid);
|
|
} else
|
|
group = NULL;
|
|
}
|
|
|
|
if (!group)
|
|
return 1;
|
|
|
|
mutex_lock(&group->lock);
|
|
group->response_sa_mad = *mad;
|
|
group->prev_state = group->state;
|
|
group->state = MCAST_RESP_READY;
|
|
/* calls mlx4_ib_mcg_work_handler */
|
|
atomic_inc(&group->refcount);
|
|
if (!queue_work(ctx->mcg_wq, &group->work))
|
|
safe_atomic_dec(&group->refcount);
|
|
mutex_unlock(&group->lock);
|
|
release_group(group, 0);
|
|
return 1; /* consumed */
|
|
case IB_MGMT_METHOD_SET:
|
|
case IB_SA_METHOD_GET_TABLE:
|
|
case IB_SA_METHOD_GET_TABLE_RESP:
|
|
case IB_SA_METHOD_DELETE:
|
|
return 0; /* not consumed, pass-through to guest over tunnel */
|
|
default:
|
|
mcg_warn("In demux, port %d: unexpected MCMember method: 0x%x, dropping\n",
|
|
port, mad->mad_hdr.method);
|
|
return 1; /* consumed */
|
|
}
|
|
}
|
|
|
|
int mlx4_ib_mcg_multiplex_handler(struct ib_device *ibdev, int port,
|
|
int slave, struct ib_sa_mad *sa_mad)
|
|
{
|
|
struct mlx4_ib_dev *dev = to_mdev(ibdev);
|
|
struct ib_sa_mcmember_data *rec = (struct ib_sa_mcmember_data *)sa_mad->data;
|
|
struct mlx4_ib_demux_ctx *ctx = &dev->sriov.demux[port - 1];
|
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struct mcast_group *group;
|
|
struct mcast_req *req;
|
|
int may_create = 0;
|
|
|
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if (ctx->flushing)
|
|
return -EAGAIN;
|
|
|
|
switch (sa_mad->mad_hdr.method) {
|
|
case IB_MGMT_METHOD_SET:
|
|
may_create = 1;
|
|
case IB_SA_METHOD_DELETE:
|
|
req = kzalloc(sizeof *req, GFP_KERNEL);
|
|
if (!req)
|
|
return -ENOMEM;
|
|
|
|
req->func = slave;
|
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req->sa_mad = *sa_mad;
|
|
|
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mutex_lock(&ctx->mcg_table_lock);
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group = acquire_group(ctx, &rec->mgid, may_create, GFP_KERNEL);
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mutex_unlock(&ctx->mcg_table_lock);
|
|
if (IS_ERR(group)) {
|
|
kfree(req);
|
|
return PTR_ERR(group);
|
|
}
|
|
mutex_lock(&group->lock);
|
|
if (group->func[slave].num_pend_reqs > MAX_PEND_REQS_PER_FUNC) {
|
|
mutex_unlock(&group->lock);
|
|
mcg_warn_group(group, "Port %d, Func %d has too many pending requests (%d), dropping\n",
|
|
port, slave, MAX_PEND_REQS_PER_FUNC);
|
|
release_group(group, 0);
|
|
kfree(req);
|
|
return -ENOMEM;
|
|
}
|
|
++group->func[slave].num_pend_reqs;
|
|
req->group = group;
|
|
queue_req(req);
|
|
mutex_unlock(&group->lock);
|
|
release_group(group, 0);
|
|
return 1; /* consumed */
|
|
case IB_SA_METHOD_GET_TABLE:
|
|
case IB_MGMT_METHOD_GET_RESP:
|
|
case IB_SA_METHOD_GET_TABLE_RESP:
|
|
case IB_SA_METHOD_DELETE_RESP:
|
|
return 0; /* not consumed, pass-through */
|
|
default:
|
|
mcg_warn("In multiplex, port %d, func %d: unexpected MCMember method: 0x%x, dropping\n",
|
|
port, slave, sa_mad->mad_hdr.method);
|
|
return 1; /* consumed */
|
|
}
|
|
}
|
|
|
|
static ssize_t sysfs_show_group(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct mcast_group *group =
|
|
container_of(attr, struct mcast_group, dentry);
|
|
struct mcast_req *req = NULL;
|
|
char pending_str[40];
|
|
char state_str[40];
|
|
ssize_t len = 0;
|
|
int f;
|
|
|
|
if (group->state == MCAST_IDLE)
|
|
sprintf(state_str, "%s", get_state_string(group->state));
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|
else
|
|
sprintf(state_str, "%s(TID=0x%llx)",
|
|
get_state_string(group->state),
|
|
be64_to_cpu(group->last_req_tid));
|
|
if (list_empty(&group->pending_list)) {
|
|
sprintf(pending_str, "No");
|
|
} else {
|
|
req = list_first_entry(&group->pending_list, struct mcast_req, group_list);
|
|
sprintf(pending_str, "Yes(TID=0x%llx)",
|
|
be64_to_cpu(req->sa_mad.mad_hdr.tid));
|
|
}
|
|
len += sprintf(buf + len, "%1d [%02d,%02d,%02d] %4d %4s %5s ",
|
|
group->rec.scope_join_state & 0xf,
|
|
group->members[2], group->members[1], group->members[0],
|
|
atomic_read(&group->refcount),
|
|
pending_str,
|
|
state_str);
|
|
for (f = 0; f < MAX_VFS; ++f)
|
|
if (group->func[f].state == MCAST_MEMBER)
|
|
len += sprintf(buf + len, "%d[%1x] ",
|
|
f, group->func[f].join_state);
|
|
|
|
len += sprintf(buf + len, "\t\t(%4hx %4x %2x %2x %2x %2x %2x "
|
|
"%4x %4x %2x %2x)\n",
|
|
be16_to_cpu(group->rec.pkey),
|
|
be32_to_cpu(group->rec.qkey),
|
|
(group->rec.mtusel_mtu & 0xc0) >> 6,
|
|
group->rec.mtusel_mtu & 0x3f,
|
|
group->rec.tclass,
|
|
(group->rec.ratesel_rate & 0xc0) >> 6,
|
|
group->rec.ratesel_rate & 0x3f,
|
|
(be32_to_cpu(group->rec.sl_flowlabel_hoplimit) & 0xf0000000) >> 28,
|
|
(be32_to_cpu(group->rec.sl_flowlabel_hoplimit) & 0x0fffff00) >> 8,
|
|
be32_to_cpu(group->rec.sl_flowlabel_hoplimit) & 0x000000ff,
|
|
group->rec.proxy_join);
|
|
|
|
return len;
|
|
}
|
|
|
|
int mlx4_ib_mcg_port_init(struct mlx4_ib_demux_ctx *ctx)
|
|
{
|
|
char name[20];
|
|
|
|
atomic_set(&ctx->tid, 0);
|
|
sprintf(name, "mlx4_ib_mcg%d", ctx->port);
|
|
ctx->mcg_wq = create_singlethread_workqueue(name);
|
|
if (!ctx->mcg_wq)
|
|
return -ENOMEM;
|
|
|
|
mutex_init(&ctx->mcg_table_lock);
|
|
ctx->mcg_table = RB_ROOT;
|
|
INIT_LIST_HEAD(&ctx->mcg_mgid0_list);
|
|
ctx->flushing = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void force_clean_group(struct mcast_group *group)
|
|
{
|
|
struct mcast_req *req, *tmp
|
|
;
|
|
list_for_each_entry_safe(req, tmp, &group->pending_list, group_list) {
|
|
list_del(&req->group_list);
|
|
kfree(req);
|
|
}
|
|
del_sysfs_port_mcg_attr(group->demux->dev, group->demux->port, &group->dentry.attr);
|
|
rb_erase(&group->node, &group->demux->mcg_table);
|
|
kfree(group);
|
|
}
|
|
|
|
static void _mlx4_ib_mcg_port_cleanup(struct mlx4_ib_demux_ctx *ctx, int destroy_wq)
|
|
{
|
|
int i;
|
|
struct rb_node *p;
|
|
struct mcast_group *group;
|
|
unsigned long end;
|
|
int count;
|
|
|
|
for (i = 0; i < MAX_VFS; ++i)
|
|
clean_vf_mcast(ctx, i);
|
|
|
|
end = jiffies + msecs_to_jiffies(MAD_TIMEOUT_MS + 3000);
|
|
do {
|
|
count = 0;
|
|
mutex_lock(&ctx->mcg_table_lock);
|
|
for (p = rb_first(&ctx->mcg_table); p; p = rb_next(p))
|
|
++count;
|
|
mutex_unlock(&ctx->mcg_table_lock);
|
|
if (!count)
|
|
break;
|
|
|
|
msleep(1);
|
|
} while (time_after(end, jiffies));
|
|
|
|
flush_workqueue(ctx->mcg_wq);
|
|
if (destroy_wq)
|
|
destroy_workqueue(ctx->mcg_wq);
|
|
|
|
mutex_lock(&ctx->mcg_table_lock);
|
|
while ((p = rb_first(&ctx->mcg_table)) != NULL) {
|
|
group = rb_entry(p, struct mcast_group, node);
|
|
if (atomic_read(&group->refcount))
|
|
mcg_warn_group(group, "group refcount %d!!! (pointer %p)\n", atomic_read(&group->refcount), group);
|
|
|
|
force_clean_group(group);
|
|
}
|
|
mutex_unlock(&ctx->mcg_table_lock);
|
|
}
|
|
|
|
struct clean_work {
|
|
struct work_struct work;
|
|
struct mlx4_ib_demux_ctx *ctx;
|
|
int destroy_wq;
|
|
};
|
|
|
|
static void mcg_clean_task(struct work_struct *work)
|
|
{
|
|
struct clean_work *cw = container_of(work, struct clean_work, work);
|
|
|
|
_mlx4_ib_mcg_port_cleanup(cw->ctx, cw->destroy_wq);
|
|
cw->ctx->flushing = 0;
|
|
kfree(cw);
|
|
}
|
|
|
|
void mlx4_ib_mcg_port_cleanup(struct mlx4_ib_demux_ctx *ctx, int destroy_wq)
|
|
{
|
|
struct clean_work *work;
|
|
|
|
if (ctx->flushing)
|
|
return;
|
|
|
|
ctx->flushing = 1;
|
|
|
|
if (destroy_wq) {
|
|
_mlx4_ib_mcg_port_cleanup(ctx, destroy_wq);
|
|
ctx->flushing = 0;
|
|
return;
|
|
}
|
|
|
|
work = kmalloc(sizeof *work, GFP_KERNEL);
|
|
if (!work) {
|
|
ctx->flushing = 0;
|
|
mcg_warn("failed allocating work for cleanup\n");
|
|
return;
|
|
}
|
|
|
|
work->ctx = ctx;
|
|
work->destroy_wq = destroy_wq;
|
|
INIT_WORK(&work->work, mcg_clean_task);
|
|
queue_work(clean_wq, &work->work);
|
|
}
|
|
|
|
static void build_leave_mad(struct mcast_req *req)
|
|
{
|
|
struct ib_sa_mad *mad = &req->sa_mad;
|
|
|
|
mad->mad_hdr.method = IB_SA_METHOD_DELETE;
|
|
}
|
|
|
|
|
|
static void clear_pending_reqs(struct mcast_group *group, int vf)
|
|
{
|
|
struct mcast_req *req, *tmp, *group_first = NULL;
|
|
int clear;
|
|
int pend = 0;
|
|
|
|
if (!list_empty(&group->pending_list))
|
|
group_first = list_first_entry(&group->pending_list, struct mcast_req, group_list);
|
|
|
|
list_for_each_entry_safe(req, tmp, &group->func[vf].pending, func_list) {
|
|
clear = 1;
|
|
if (group_first == req &&
|
|
(group->state == MCAST_JOIN_SENT ||
|
|
group->state == MCAST_LEAVE_SENT)) {
|
|
clear = cancel_delayed_work(&group->timeout_work);
|
|
pend = !clear;
|
|
group->state = MCAST_IDLE;
|
|
}
|
|
if (clear) {
|
|
--group->func[vf].num_pend_reqs;
|
|
list_del(&req->group_list);
|
|
list_del(&req->func_list);
|
|
kfree(req);
|
|
atomic_dec(&group->refcount);
|
|
}
|
|
}
|
|
|
|
if (!pend && (!list_empty(&group->func[vf].pending) || group->func[vf].num_pend_reqs)) {
|
|
mcg_warn_group(group, "DRIVER BUG: list_empty %d, num_pend_reqs %d\n",
|
|
list_empty(&group->func[vf].pending), group->func[vf].num_pend_reqs);
|
|
}
|
|
}
|
|
|
|
static int push_deleteing_req(struct mcast_group *group, int slave)
|
|
{
|
|
struct mcast_req *req;
|
|
struct mcast_req *pend_req;
|
|
|
|
if (!group->func[slave].join_state)
|
|
return 0;
|
|
|
|
req = kzalloc(sizeof *req, GFP_KERNEL);
|
|
if (!req) {
|
|
mcg_warn_group(group, "failed allocation - may leave stall groups\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (!list_empty(&group->func[slave].pending)) {
|
|
pend_req = list_entry(group->func[slave].pending.prev, struct mcast_req, group_list);
|
|
if (pend_req->clean) {
|
|
kfree(req);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
req->clean = 1;
|
|
req->func = slave;
|
|
req->group = group;
|
|
++group->func[slave].num_pend_reqs;
|
|
build_leave_mad(req);
|
|
queue_req(req);
|
|
return 0;
|
|
}
|
|
|
|
void clean_vf_mcast(struct mlx4_ib_demux_ctx *ctx, int slave)
|
|
{
|
|
struct mcast_group *group;
|
|
struct rb_node *p;
|
|
|
|
mutex_lock(&ctx->mcg_table_lock);
|
|
for (p = rb_first(&ctx->mcg_table); p; p = rb_next(p)) {
|
|
group = rb_entry(p, struct mcast_group, node);
|
|
mutex_lock(&group->lock);
|
|
if (atomic_read(&group->refcount)) {
|
|
/* clear pending requests of this VF */
|
|
clear_pending_reqs(group, slave);
|
|
push_deleteing_req(group, slave);
|
|
}
|
|
mutex_unlock(&group->lock);
|
|
}
|
|
mutex_unlock(&ctx->mcg_table_lock);
|
|
}
|
|
|
|
|
|
int mlx4_ib_mcg_init(void)
|
|
{
|
|
clean_wq = create_singlethread_workqueue("mlx4_ib_mcg");
|
|
if (!clean_wq)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void mlx4_ib_mcg_destroy(void)
|
|
{
|
|
destroy_workqueue(clean_wq);
|
|
}
|