855 lines
22 KiB
C
855 lines
22 KiB
C
/*
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* Copyright (c) 2015, Mellanox Technologies inc. 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 "core_priv.h"
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#include <linux/in.h>
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#include <linux/in6.h>
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/* For in6_dev_get/in6_dev_put */
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#include <net/addrconf.h>
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#include <net/bonding.h>
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#include <rdma/ib_cache.h>
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#include <rdma/ib_addr.h>
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static struct workqueue_struct *gid_cache_wq;
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enum gid_op_type {
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GID_DEL = 0,
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GID_ADD
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};
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struct update_gid_event_work {
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struct work_struct work;
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union ib_gid gid;
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struct ib_gid_attr gid_attr;
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enum gid_op_type gid_op;
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};
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#define ROCE_NETDEV_CALLBACK_SZ 3
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struct netdev_event_work_cmd {
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roce_netdev_callback cb;
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roce_netdev_filter filter;
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struct net_device *ndev;
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struct net_device *filter_ndev;
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};
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struct netdev_event_work {
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struct work_struct work;
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struct netdev_event_work_cmd cmds[ROCE_NETDEV_CALLBACK_SZ];
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};
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static const struct {
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bool (*is_supported)(const struct ib_device *device, u8 port_num);
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enum ib_gid_type gid_type;
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} PORT_CAP_TO_GID_TYPE[] = {
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{rdma_protocol_roce_eth_encap, IB_GID_TYPE_ROCE},
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{rdma_protocol_roce_udp_encap, IB_GID_TYPE_ROCE_UDP_ENCAP},
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};
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#define CAP_TO_GID_TABLE_SIZE ARRAY_SIZE(PORT_CAP_TO_GID_TYPE)
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unsigned long roce_gid_type_mask_support(struct ib_device *ib_dev, u8 port)
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{
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int i;
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unsigned int ret_flags = 0;
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if (!rdma_protocol_roce(ib_dev, port))
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return 1UL << IB_GID_TYPE_IB;
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for (i = 0; i < CAP_TO_GID_TABLE_SIZE; i++)
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if (PORT_CAP_TO_GID_TYPE[i].is_supported(ib_dev, port))
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ret_flags |= 1UL << PORT_CAP_TO_GID_TYPE[i].gid_type;
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return ret_flags;
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}
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EXPORT_SYMBOL(roce_gid_type_mask_support);
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static void update_gid(enum gid_op_type gid_op, struct ib_device *ib_dev,
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u8 port, union ib_gid *gid,
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struct ib_gid_attr *gid_attr)
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{
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int i;
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unsigned long gid_type_mask = roce_gid_type_mask_support(ib_dev, port);
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for (i = 0; i < IB_GID_TYPE_SIZE; i++) {
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if ((1UL << i) & gid_type_mask) {
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gid_attr->gid_type = i;
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switch (gid_op) {
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case GID_ADD:
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ib_cache_gid_add(ib_dev, port,
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gid, gid_attr);
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break;
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case GID_DEL:
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ib_cache_gid_del(ib_dev, port,
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gid, gid_attr);
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break;
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}
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}
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}
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}
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enum bonding_slave_state {
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BONDING_SLAVE_STATE_ACTIVE = 1UL << 0,
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BONDING_SLAVE_STATE_INACTIVE = 1UL << 1,
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/* No primary slave or the device isn't a slave in bonding */
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BONDING_SLAVE_STATE_NA = 1UL << 2,
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};
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static enum bonding_slave_state is_eth_active_slave_of_bonding_rcu(struct net_device *dev,
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struct net_device *upper)
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{
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if (upper && netif_is_bond_master(upper)) {
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struct net_device *pdev =
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bond_option_active_slave_get_rcu(netdev_priv(upper));
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if (pdev)
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return dev == pdev ? BONDING_SLAVE_STATE_ACTIVE :
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BONDING_SLAVE_STATE_INACTIVE;
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}
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return BONDING_SLAVE_STATE_NA;
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}
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#define REQUIRED_BOND_STATES (BONDING_SLAVE_STATE_ACTIVE | \
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BONDING_SLAVE_STATE_NA)
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static int is_eth_port_of_netdev(struct ib_device *ib_dev, u8 port,
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struct net_device *rdma_ndev, void *cookie)
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{
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struct net_device *real_dev;
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int res;
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if (!rdma_ndev)
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return 0;
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rcu_read_lock();
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real_dev = rdma_vlan_dev_real_dev(cookie);
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if (!real_dev)
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real_dev = cookie;
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res = ((rdma_is_upper_dev_rcu(rdma_ndev, cookie) &&
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(is_eth_active_slave_of_bonding_rcu(rdma_ndev, real_dev) &
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REQUIRED_BOND_STATES)) ||
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real_dev == rdma_ndev);
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rcu_read_unlock();
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return res;
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}
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static int is_eth_port_inactive_slave(struct ib_device *ib_dev, u8 port,
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struct net_device *rdma_ndev, void *cookie)
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{
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struct net_device *master_dev;
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int res;
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if (!rdma_ndev)
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return 0;
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rcu_read_lock();
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master_dev = netdev_master_upper_dev_get_rcu(rdma_ndev);
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res = is_eth_active_slave_of_bonding_rcu(rdma_ndev, master_dev) ==
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BONDING_SLAVE_STATE_INACTIVE;
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rcu_read_unlock();
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return res;
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}
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static int pass_all_filter(struct ib_device *ib_dev, u8 port,
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struct net_device *rdma_ndev, void *cookie)
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{
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return 1;
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}
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static int upper_device_filter(struct ib_device *ib_dev, u8 port,
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struct net_device *rdma_ndev, void *cookie)
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{
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int res;
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if (!rdma_ndev)
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return 0;
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if (rdma_ndev == cookie)
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return 1;
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rcu_read_lock();
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res = rdma_is_upper_dev_rcu(rdma_ndev, cookie);
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rcu_read_unlock();
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return res;
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}
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/**
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* is_upper_ndev_bond_master_filter - Check if a given netdevice
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* is bond master device of netdevice of the the RDMA device of port.
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* @ib_dev: IB device to check
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* @port: Port to consider for adding default GID
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* @rdma_ndev: Pointer to rdma netdevice
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* @cookie: Netdevice to consider to form a default GID
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*
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* is_upper_ndev_bond_master_filter() returns true if a cookie_netdev
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* is bond master device and rdma_ndev is its lower netdevice. It might
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* not have been established as slave device yet.
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*/
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static int
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is_upper_ndev_bond_master_filter(struct ib_device *ib_dev, u8 port,
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struct net_device *rdma_ndev,
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void *cookie)
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{
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struct net_device *cookie_ndev = cookie;
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bool match = false;
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rcu_read_lock();
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if (netif_is_bond_master(cookie_ndev) &&
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rdma_is_upper_dev_rcu(rdma_ndev, cookie_ndev))
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match = true;
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rcu_read_unlock();
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return match;
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}
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static void update_gid_ip(enum gid_op_type gid_op,
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struct ib_device *ib_dev,
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u8 port, struct net_device *ndev,
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struct sockaddr *addr)
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{
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union ib_gid gid;
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struct ib_gid_attr gid_attr;
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rdma_ip2gid(addr, &gid);
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memset(&gid_attr, 0, sizeof(gid_attr));
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gid_attr.ndev = ndev;
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update_gid(gid_op, ib_dev, port, &gid, &gid_attr);
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}
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static void enum_netdev_default_gids(struct ib_device *ib_dev,
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u8 port, struct net_device *event_ndev,
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struct net_device *rdma_ndev)
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{
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unsigned long gid_type_mask;
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rcu_read_lock();
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if (!rdma_ndev ||
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((rdma_ndev != event_ndev &&
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!rdma_is_upper_dev_rcu(rdma_ndev, event_ndev)) ||
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is_eth_active_slave_of_bonding_rcu(rdma_ndev,
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netdev_master_upper_dev_get_rcu(rdma_ndev)) ==
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BONDING_SLAVE_STATE_INACTIVE)) {
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rcu_read_unlock();
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return;
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}
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rcu_read_unlock();
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gid_type_mask = roce_gid_type_mask_support(ib_dev, port);
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ib_cache_gid_set_default_gid(ib_dev, port, rdma_ndev, gid_type_mask,
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IB_CACHE_GID_DEFAULT_MODE_SET);
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}
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static void bond_delete_netdev_default_gids(struct ib_device *ib_dev,
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u8 port,
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struct net_device *rdma_ndev,
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void *event_ndev)
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{
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struct net_device *real_dev = rdma_vlan_dev_real_dev(event_ndev);
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unsigned long gid_type_mask;
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if (!rdma_ndev)
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return;
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if (!real_dev)
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real_dev = event_ndev;
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rcu_read_lock();
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if (((rdma_ndev != event_ndev &&
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!rdma_is_upper_dev_rcu(rdma_ndev, event_ndev)) ||
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is_eth_active_slave_of_bonding_rcu(rdma_ndev, real_dev)
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==
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BONDING_SLAVE_STATE_INACTIVE)) {
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rcu_read_unlock();
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return;
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}
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rcu_read_unlock();
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gid_type_mask = roce_gid_type_mask_support(ib_dev, port);
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ib_cache_gid_set_default_gid(ib_dev, port, rdma_ndev,
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gid_type_mask,
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IB_CACHE_GID_DEFAULT_MODE_DELETE);
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}
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static void enum_netdev_ipv4_ips(struct ib_device *ib_dev,
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u8 port, struct net_device *ndev)
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{
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struct in_device *in_dev;
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struct sin_list {
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struct list_head list;
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struct sockaddr_in ip;
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};
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struct sin_list *sin_iter;
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struct sin_list *sin_temp;
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LIST_HEAD(sin_list);
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if (ndev->reg_state >= NETREG_UNREGISTERING)
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return;
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rcu_read_lock();
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in_dev = __in_dev_get_rcu(ndev);
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if (!in_dev) {
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rcu_read_unlock();
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return;
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}
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for_ifa(in_dev) {
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struct sin_list *entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
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if (!entry)
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continue;
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entry->ip.sin_family = AF_INET;
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entry->ip.sin_addr.s_addr = ifa->ifa_address;
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list_add_tail(&entry->list, &sin_list);
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}
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endfor_ifa(in_dev);
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rcu_read_unlock();
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list_for_each_entry_safe(sin_iter, sin_temp, &sin_list, list) {
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update_gid_ip(GID_ADD, ib_dev, port, ndev,
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(struct sockaddr *)&sin_iter->ip);
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list_del(&sin_iter->list);
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kfree(sin_iter);
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}
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}
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static void enum_netdev_ipv6_ips(struct ib_device *ib_dev,
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u8 port, struct net_device *ndev)
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{
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struct inet6_ifaddr *ifp;
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struct inet6_dev *in6_dev;
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struct sin6_list {
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struct list_head list;
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struct sockaddr_in6 sin6;
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};
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struct sin6_list *sin6_iter;
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struct sin6_list *sin6_temp;
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struct ib_gid_attr gid_attr = {.ndev = ndev};
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LIST_HEAD(sin6_list);
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if (ndev->reg_state >= NETREG_UNREGISTERING)
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return;
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in6_dev = in6_dev_get(ndev);
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if (!in6_dev)
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return;
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read_lock_bh(&in6_dev->lock);
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list_for_each_entry(ifp, &in6_dev->addr_list, if_list) {
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struct sin6_list *entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
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if (!entry)
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continue;
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entry->sin6.sin6_family = AF_INET6;
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entry->sin6.sin6_addr = ifp->addr;
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list_add_tail(&entry->list, &sin6_list);
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}
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read_unlock_bh(&in6_dev->lock);
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in6_dev_put(in6_dev);
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list_for_each_entry_safe(sin6_iter, sin6_temp, &sin6_list, list) {
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union ib_gid gid;
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rdma_ip2gid((struct sockaddr *)&sin6_iter->sin6, &gid);
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update_gid(GID_ADD, ib_dev, port, &gid, &gid_attr);
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list_del(&sin6_iter->list);
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kfree(sin6_iter);
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}
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}
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static void _add_netdev_ips(struct ib_device *ib_dev, u8 port,
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struct net_device *ndev)
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{
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enum_netdev_ipv4_ips(ib_dev, port, ndev);
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if (IS_ENABLED(CONFIG_IPV6))
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enum_netdev_ipv6_ips(ib_dev, port, ndev);
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}
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static void add_netdev_ips(struct ib_device *ib_dev, u8 port,
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struct net_device *rdma_ndev, void *cookie)
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{
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enum_netdev_default_gids(ib_dev, port, cookie, rdma_ndev);
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_add_netdev_ips(ib_dev, port, cookie);
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}
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static void del_netdev_ips(struct ib_device *ib_dev, u8 port,
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struct net_device *rdma_ndev, void *cookie)
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{
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ib_cache_gid_del_all_netdev_gids(ib_dev, port, cookie);
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}
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/**
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* del_default_gids - Delete default GIDs of the event/cookie netdevice
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* @ib_dev: RDMA device pointer
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* @port: Port of the RDMA device whose GID table to consider
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* @rdma_ndev: Unused rdma netdevice
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* @cookie: Pointer to event netdevice
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*
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* del_default_gids() deletes the default GIDs of the event/cookie netdevice.
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*/
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static void del_default_gids(struct ib_device *ib_dev, u8 port,
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struct net_device *rdma_ndev, void *cookie)
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{
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struct net_device *cookie_ndev = cookie;
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unsigned long gid_type_mask;
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gid_type_mask = roce_gid_type_mask_support(ib_dev, port);
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ib_cache_gid_set_default_gid(ib_dev, port, cookie_ndev, gid_type_mask,
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IB_CACHE_GID_DEFAULT_MODE_DELETE);
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}
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static void enum_all_gids_of_dev_cb(struct ib_device *ib_dev,
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u8 port,
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struct net_device *rdma_ndev,
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void *cookie)
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{
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struct net *net;
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struct net_device *ndev;
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/* Lock the rtnl to make sure the netdevs does not move under
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* our feet
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*/
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rtnl_lock();
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down_read(&net_rwsem);
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for_each_net(net)
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for_each_netdev(net, ndev)
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if (is_eth_port_of_netdev(ib_dev, port, rdma_ndev, ndev))
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add_netdev_ips(ib_dev, port, rdma_ndev, ndev);
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up_read(&net_rwsem);
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rtnl_unlock();
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}
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/**
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* rdma_roce_rescan_device - Rescan all of the network devices in the system
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* and add their gids, as needed, to the relevant RoCE devices.
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*
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* @device: the rdma device
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*/
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void rdma_roce_rescan_device(struct ib_device *ib_dev)
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{
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ib_enum_roce_netdev(ib_dev, pass_all_filter, NULL,
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enum_all_gids_of_dev_cb, NULL);
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}
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EXPORT_SYMBOL(rdma_roce_rescan_device);
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static void callback_for_addr_gid_device_scan(struct ib_device *device,
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u8 port,
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struct net_device *rdma_ndev,
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void *cookie)
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{
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struct update_gid_event_work *parsed = cookie;
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return update_gid(parsed->gid_op, device,
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port, &parsed->gid,
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&parsed->gid_attr);
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}
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struct upper_list {
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struct list_head list;
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struct net_device *upper;
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};
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static int netdev_upper_walk(struct net_device *upper, void *data)
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{
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struct upper_list *entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
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struct list_head *upper_list = data;
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if (!entry)
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return 0;
|
|
|
|
list_add_tail(&entry->list, upper_list);
|
|
dev_hold(upper);
|
|
entry->upper = upper;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void handle_netdev_upper(struct ib_device *ib_dev, u8 port,
|
|
void *cookie,
|
|
void (*handle_netdev)(struct ib_device *ib_dev,
|
|
u8 port,
|
|
struct net_device *ndev))
|
|
{
|
|
struct net_device *ndev = cookie;
|
|
struct upper_list *upper_iter;
|
|
struct upper_list *upper_temp;
|
|
LIST_HEAD(upper_list);
|
|
|
|
rcu_read_lock();
|
|
netdev_walk_all_upper_dev_rcu(ndev, netdev_upper_walk, &upper_list);
|
|
rcu_read_unlock();
|
|
|
|
handle_netdev(ib_dev, port, ndev);
|
|
list_for_each_entry_safe(upper_iter, upper_temp, &upper_list,
|
|
list) {
|
|
handle_netdev(ib_dev, port, upper_iter->upper);
|
|
dev_put(upper_iter->upper);
|
|
list_del(&upper_iter->list);
|
|
kfree(upper_iter);
|
|
}
|
|
}
|
|
|
|
static void _roce_del_all_netdev_gids(struct ib_device *ib_dev, u8 port,
|
|
struct net_device *event_ndev)
|
|
{
|
|
ib_cache_gid_del_all_netdev_gids(ib_dev, port, event_ndev);
|
|
}
|
|
|
|
static void del_netdev_upper_ips(struct ib_device *ib_dev, u8 port,
|
|
struct net_device *rdma_ndev, void *cookie)
|
|
{
|
|
handle_netdev_upper(ib_dev, port, cookie, _roce_del_all_netdev_gids);
|
|
}
|
|
|
|
static void add_netdev_upper_ips(struct ib_device *ib_dev, u8 port,
|
|
struct net_device *rdma_ndev, void *cookie)
|
|
{
|
|
handle_netdev_upper(ib_dev, port, cookie, _add_netdev_ips);
|
|
}
|
|
|
|
static void del_netdev_default_ips_join(struct ib_device *ib_dev, u8 port,
|
|
struct net_device *rdma_ndev,
|
|
void *cookie)
|
|
{
|
|
struct net_device *master_ndev;
|
|
|
|
rcu_read_lock();
|
|
master_ndev = netdev_master_upper_dev_get_rcu(rdma_ndev);
|
|
if (master_ndev)
|
|
dev_hold(master_ndev);
|
|
rcu_read_unlock();
|
|
|
|
if (master_ndev) {
|
|
bond_delete_netdev_default_gids(ib_dev, port, rdma_ndev,
|
|
master_ndev);
|
|
dev_put(master_ndev);
|
|
}
|
|
}
|
|
|
|
/* The following functions operate on all IB devices. netdevice_event and
|
|
* addr_event execute ib_enum_all_roce_netdevs through a work.
|
|
* ib_enum_all_roce_netdevs iterates through all IB devices.
|
|
*/
|
|
|
|
static void netdevice_event_work_handler(struct work_struct *_work)
|
|
{
|
|
struct netdev_event_work *work =
|
|
container_of(_work, struct netdev_event_work, work);
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(work->cmds) && work->cmds[i].cb; i++) {
|
|
ib_enum_all_roce_netdevs(work->cmds[i].filter,
|
|
work->cmds[i].filter_ndev,
|
|
work->cmds[i].cb,
|
|
work->cmds[i].ndev);
|
|
dev_put(work->cmds[i].ndev);
|
|
dev_put(work->cmds[i].filter_ndev);
|
|
}
|
|
|
|
kfree(work);
|
|
}
|
|
|
|
static int netdevice_queue_work(struct netdev_event_work_cmd *cmds,
|
|
struct net_device *ndev)
|
|
{
|
|
unsigned int i;
|
|
struct netdev_event_work *ndev_work =
|
|
kmalloc(sizeof(*ndev_work), GFP_KERNEL);
|
|
|
|
if (!ndev_work)
|
|
return NOTIFY_DONE;
|
|
|
|
memcpy(ndev_work->cmds, cmds, sizeof(ndev_work->cmds));
|
|
for (i = 0; i < ARRAY_SIZE(ndev_work->cmds) && ndev_work->cmds[i].cb; i++) {
|
|
if (!ndev_work->cmds[i].ndev)
|
|
ndev_work->cmds[i].ndev = ndev;
|
|
if (!ndev_work->cmds[i].filter_ndev)
|
|
ndev_work->cmds[i].filter_ndev = ndev;
|
|
dev_hold(ndev_work->cmds[i].ndev);
|
|
dev_hold(ndev_work->cmds[i].filter_ndev);
|
|
}
|
|
INIT_WORK(&ndev_work->work, netdevice_event_work_handler);
|
|
|
|
queue_work(gid_cache_wq, &ndev_work->work);
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
static const struct netdev_event_work_cmd add_cmd = {
|
|
.cb = add_netdev_ips, .filter = is_eth_port_of_netdev};
|
|
static const struct netdev_event_work_cmd add_cmd_upper_ips = {
|
|
.cb = add_netdev_upper_ips, .filter = is_eth_port_of_netdev};
|
|
|
|
static void
|
|
ndev_event_unlink(struct netdev_notifier_changeupper_info *changeupper_info,
|
|
struct netdev_event_work_cmd *cmds)
|
|
{
|
|
static const struct netdev_event_work_cmd
|
|
upper_ips_del_cmd = {
|
|
.cb = del_netdev_upper_ips,
|
|
.filter = upper_device_filter
|
|
};
|
|
|
|
cmds[0] = upper_ips_del_cmd;
|
|
cmds[0].ndev = changeupper_info->upper_dev;
|
|
cmds[1] = add_cmd;
|
|
}
|
|
|
|
static void
|
|
ndev_event_link(struct net_device *event_ndev,
|
|
struct netdev_notifier_changeupper_info *changeupper_info,
|
|
struct netdev_event_work_cmd *cmds)
|
|
{
|
|
static const struct netdev_event_work_cmd
|
|
bonding_default_del_cmd = {
|
|
.cb = del_default_gids,
|
|
.filter = is_upper_ndev_bond_master_filter
|
|
};
|
|
/*
|
|
* When a lower netdev is linked to its upper bonding
|
|
* netdev, delete lower slave netdev's default GIDs.
|
|
*/
|
|
cmds[0] = bonding_default_del_cmd;
|
|
cmds[0].ndev = event_ndev;
|
|
cmds[0].filter_ndev = changeupper_info->upper_dev;
|
|
|
|
cmds[1] = add_cmd_upper_ips;
|
|
cmds[1].ndev = changeupper_info->upper_dev;
|
|
cmds[1].filter_ndev = changeupper_info->upper_dev;
|
|
}
|
|
|
|
static void netdevice_event_changeupper(struct net_device *event_ndev,
|
|
struct netdev_notifier_changeupper_info *changeupper_info,
|
|
struct netdev_event_work_cmd *cmds)
|
|
{
|
|
if (changeupper_info->linking)
|
|
ndev_event_link(event_ndev, changeupper_info, cmds);
|
|
else
|
|
ndev_event_unlink(changeupper_info, cmds);
|
|
}
|
|
|
|
static int netdevice_event(struct notifier_block *this, unsigned long event,
|
|
void *ptr)
|
|
{
|
|
static const struct netdev_event_work_cmd del_cmd = {
|
|
.cb = del_netdev_ips, .filter = pass_all_filter};
|
|
static const struct netdev_event_work_cmd bonding_default_del_cmd_join = {
|
|
.cb = del_netdev_default_ips_join, .filter = is_eth_port_inactive_slave};
|
|
static const struct netdev_event_work_cmd
|
|
default_del_cmd = {
|
|
.cb = bond_delete_netdev_default_gids,
|
|
.filter = pass_all_filter
|
|
};
|
|
static const struct netdev_event_work_cmd bonding_event_ips_del_cmd = {
|
|
.cb = del_netdev_upper_ips, .filter = upper_device_filter};
|
|
struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
|
|
struct netdev_event_work_cmd cmds[ROCE_NETDEV_CALLBACK_SZ] = { {NULL} };
|
|
|
|
if (ndev->type != ARPHRD_ETHER)
|
|
return NOTIFY_DONE;
|
|
|
|
switch (event) {
|
|
case NETDEV_REGISTER:
|
|
case NETDEV_UP:
|
|
cmds[0] = bonding_default_del_cmd_join;
|
|
cmds[1] = add_cmd;
|
|
break;
|
|
|
|
case NETDEV_UNREGISTER:
|
|
if (ndev->reg_state < NETREG_UNREGISTERED)
|
|
cmds[0] = del_cmd;
|
|
else
|
|
return NOTIFY_DONE;
|
|
break;
|
|
|
|
case NETDEV_CHANGEADDR:
|
|
cmds[0] = default_del_cmd;
|
|
cmds[1] = add_cmd;
|
|
break;
|
|
|
|
case NETDEV_CHANGEUPPER:
|
|
netdevice_event_changeupper(ndev,
|
|
container_of(ptr, struct netdev_notifier_changeupper_info, info),
|
|
cmds);
|
|
break;
|
|
|
|
case NETDEV_BONDING_FAILOVER:
|
|
cmds[0] = bonding_event_ips_del_cmd;
|
|
cmds[1] = bonding_default_del_cmd_join;
|
|
cmds[2] = add_cmd_upper_ips;
|
|
break;
|
|
|
|
default:
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
return netdevice_queue_work(cmds, ndev);
|
|
}
|
|
|
|
static void update_gid_event_work_handler(struct work_struct *_work)
|
|
{
|
|
struct update_gid_event_work *work =
|
|
container_of(_work, struct update_gid_event_work, work);
|
|
|
|
ib_enum_all_roce_netdevs(is_eth_port_of_netdev, work->gid_attr.ndev,
|
|
callback_for_addr_gid_device_scan, work);
|
|
|
|
dev_put(work->gid_attr.ndev);
|
|
kfree(work);
|
|
}
|
|
|
|
static int addr_event(struct notifier_block *this, unsigned long event,
|
|
struct sockaddr *sa, struct net_device *ndev)
|
|
{
|
|
struct update_gid_event_work *work;
|
|
enum gid_op_type gid_op;
|
|
|
|
if (ndev->type != ARPHRD_ETHER)
|
|
return NOTIFY_DONE;
|
|
|
|
switch (event) {
|
|
case NETDEV_UP:
|
|
gid_op = GID_ADD;
|
|
break;
|
|
|
|
case NETDEV_DOWN:
|
|
gid_op = GID_DEL;
|
|
break;
|
|
|
|
default:
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
work = kmalloc(sizeof(*work), GFP_ATOMIC);
|
|
if (!work)
|
|
return NOTIFY_DONE;
|
|
|
|
INIT_WORK(&work->work, update_gid_event_work_handler);
|
|
|
|
rdma_ip2gid(sa, &work->gid);
|
|
work->gid_op = gid_op;
|
|
|
|
memset(&work->gid_attr, 0, sizeof(work->gid_attr));
|
|
dev_hold(ndev);
|
|
work->gid_attr.ndev = ndev;
|
|
|
|
queue_work(gid_cache_wq, &work->work);
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
static int inetaddr_event(struct notifier_block *this, unsigned long event,
|
|
void *ptr)
|
|
{
|
|
struct sockaddr_in in;
|
|
struct net_device *ndev;
|
|
struct in_ifaddr *ifa = ptr;
|
|
|
|
in.sin_family = AF_INET;
|
|
in.sin_addr.s_addr = ifa->ifa_address;
|
|
ndev = ifa->ifa_dev->dev;
|
|
|
|
return addr_event(this, event, (struct sockaddr *)&in, ndev);
|
|
}
|
|
|
|
static int inet6addr_event(struct notifier_block *this, unsigned long event,
|
|
void *ptr)
|
|
{
|
|
struct sockaddr_in6 in6;
|
|
struct net_device *ndev;
|
|
struct inet6_ifaddr *ifa6 = ptr;
|
|
|
|
in6.sin6_family = AF_INET6;
|
|
in6.sin6_addr = ifa6->addr;
|
|
ndev = ifa6->idev->dev;
|
|
|
|
return addr_event(this, event, (struct sockaddr *)&in6, ndev);
|
|
}
|
|
|
|
static struct notifier_block nb_netdevice = {
|
|
.notifier_call = netdevice_event
|
|
};
|
|
|
|
static struct notifier_block nb_inetaddr = {
|
|
.notifier_call = inetaddr_event
|
|
};
|
|
|
|
static struct notifier_block nb_inet6addr = {
|
|
.notifier_call = inet6addr_event
|
|
};
|
|
|
|
int __init roce_gid_mgmt_init(void)
|
|
{
|
|
gid_cache_wq = alloc_ordered_workqueue("gid-cache-wq", 0);
|
|
if (!gid_cache_wq)
|
|
return -ENOMEM;
|
|
|
|
register_inetaddr_notifier(&nb_inetaddr);
|
|
if (IS_ENABLED(CONFIG_IPV6))
|
|
register_inet6addr_notifier(&nb_inet6addr);
|
|
/* We relay on the netdevice notifier to enumerate all
|
|
* existing devices in the system. Register to this notifier
|
|
* last to make sure we will not miss any IP add/del
|
|
* callbacks.
|
|
*/
|
|
register_netdevice_notifier(&nb_netdevice);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void __exit roce_gid_mgmt_cleanup(void)
|
|
{
|
|
if (IS_ENABLED(CONFIG_IPV6))
|
|
unregister_inet6addr_notifier(&nb_inet6addr);
|
|
unregister_inetaddr_notifier(&nb_inetaddr);
|
|
unregister_netdevice_notifier(&nb_netdevice);
|
|
/* Ensure all gid deletion tasks complete before we go down,
|
|
* to avoid any reference to free'd memory. By the time
|
|
* ib-core is removed, all physical devices have been removed,
|
|
* so no issue with remaining hardware contexts.
|
|
*/
|
|
destroy_workqueue(gid_cache_wq);
|
|
}
|