diff options
Diffstat (limited to 'drivers/net/ethernet/marvell/prestera/prestera_router.c')
| -rw-r--r-- | drivers/net/ethernet/marvell/prestera/prestera_router.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_router.c b/drivers/net/ethernet/marvell/prestera/prestera_router.c new file mode 100644 index 000000000000..8a3b7b664358 --- /dev/null +++ b/drivers/net/ethernet/marvell/prestera/prestera_router.c @@ -0,0 +1,182 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +/* Copyright (c) 2019-2021 Marvell International Ltd. All rights reserved */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/inetdevice.h> +#include <net/switchdev.h> + +#include "prestera.h" +#include "prestera_router_hw.h" + +/* This util to be used, to convert kernel rules for default vr in hw_vr */ +static u32 prestera_fix_tb_id(u32 tb_id) +{ + if (tb_id == RT_TABLE_UNSPEC || + tb_id == RT_TABLE_LOCAL || + tb_id == RT_TABLE_DEFAULT) + tb_id = RT_TABLE_MAIN; + + return tb_id; +} + +static int __prestera_inetaddr_port_event(struct net_device *port_dev, + unsigned long event, + struct netlink_ext_ack *extack) +{ + struct prestera_port *port = netdev_priv(port_dev); + int err; + struct prestera_rif_entry *re; + struct prestera_rif_entry_key re_key = {}; + u32 kern_tb_id; + + err = prestera_is_valid_mac_addr(port, port_dev->dev_addr); + if (err) { + NL_SET_ERR_MSG_MOD(extack, "RIF MAC must have the same prefix"); + return err; + } + + kern_tb_id = l3mdev_fib_table(port_dev); + re_key.iface.type = PRESTERA_IF_PORT_E; + re_key.iface.dev_port.hw_dev_num = port->dev_id; + re_key.iface.dev_port.port_num = port->hw_id; + re = prestera_rif_entry_find(port->sw, &re_key); + + switch (event) { + case NETDEV_UP: + if (re) { + NL_SET_ERR_MSG_MOD(extack, "rif_entry already exist"); + return -EEXIST; + } + re = prestera_rif_entry_create(port->sw, &re_key, + prestera_fix_tb_id(kern_tb_id), + port_dev->dev_addr); + if (!re) { + NL_SET_ERR_MSG_MOD(extack, "Can't create rif_entry"); + return -EINVAL; + } + dev_hold(port_dev); + break; + case NETDEV_DOWN: + if (!re) { + NL_SET_ERR_MSG_MOD(extack, "rif_entry not exist"); + return -EEXIST; + } + prestera_rif_entry_destroy(port->sw, re); + dev_put(port_dev); + break; + } + + return 0; +} + +static int __prestera_inetaddr_event(struct prestera_switch *sw, + struct net_device *dev, + unsigned long event, + struct netlink_ext_ack *extack) +{ + if (prestera_netdev_check(dev) && !netif_is_bridge_port(dev) && + !netif_is_lag_port(dev) && !netif_is_ovs_port(dev)) + return __prestera_inetaddr_port_event(dev, event, extack); + + return 0; +} + +static int __prestera_inetaddr_cb(struct notifier_block *nb, + unsigned long event, void *ptr) +{ + struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; + struct net_device *dev = ifa->ifa_dev->dev; + struct prestera_router *router = container_of(nb, + struct prestera_router, + inetaddr_nb); + struct in_device *idev; + int err = 0; + + if (event != NETDEV_DOWN) + goto out; + + /* Ignore if this is not latest address */ + idev = __in_dev_get_rtnl(dev); + if (idev && idev->ifa_list) + goto out; + + err = __prestera_inetaddr_event(router->sw, dev, event, NULL); +out: + return notifier_from_errno(err); +} + +static int __prestera_inetaddr_valid_cb(struct notifier_block *nb, + unsigned long event, void *ptr) +{ + struct in_validator_info *ivi = (struct in_validator_info *)ptr; + struct net_device *dev = ivi->ivi_dev->dev; + struct prestera_router *router = container_of(nb, + struct prestera_router, + inetaddr_valid_nb); + struct in_device *idev; + int err = 0; + + if (event != NETDEV_UP) + goto out; + + /* Ignore if this is not first address */ + idev = __in_dev_get_rtnl(dev); + if (idev && idev->ifa_list) + goto out; + + if (ipv4_is_multicast(ivi->ivi_addr)) { + err = -EINVAL; + goto out; + } + + err = __prestera_inetaddr_event(router->sw, dev, event, ivi->extack); +out: + return notifier_from_errno(err); +} + +int prestera_router_init(struct prestera_switch *sw) +{ + struct prestera_router *router; + int err; + + router = kzalloc(sizeof(*sw->router), GFP_KERNEL); + if (!router) + return -ENOMEM; + + sw->router = router; + router->sw = sw; + + err = prestera_router_hw_init(sw); + if (err) + goto err_router_lib_init; + + router->inetaddr_valid_nb.notifier_call = __prestera_inetaddr_valid_cb; + err = register_inetaddr_validator_notifier(&router->inetaddr_valid_nb); + if (err) + goto err_register_inetaddr_validator_notifier; + + router->inetaddr_nb.notifier_call = __prestera_inetaddr_cb; + err = register_inetaddr_notifier(&router->inetaddr_nb); + if (err) + goto err_register_inetaddr_notifier; + + return 0; + +err_register_inetaddr_notifier: + unregister_inetaddr_validator_notifier(&router->inetaddr_valid_nb); +err_register_inetaddr_validator_notifier: + /* prestera_router_hw_fini */ +err_router_lib_init: + kfree(sw->router); + return err; +} + +void prestera_router_fini(struct prestera_switch *sw) +{ + unregister_inetaddr_notifier(&sw->router->inetaddr_nb); + unregister_inetaddr_validator_notifier(&sw->router->inetaddr_valid_nb); + /* router_hw_fini */ + kfree(sw->router); + sw->router = NULL; +} |