mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
55199df6d2
Let switch drivers indicate how many TX queues they support. Some switches, such as Broadcom Starfighter 2 are designed with 8 egress queues. Future changes will allow us to leverage the queue mapping and direct the transmission towards a particular queue. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1526 lines
36 KiB
C
1526 lines
36 KiB
C
/*
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* net/dsa/slave.c - Slave device handling
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* Copyright (c) 2008-2009 Marvell Semiconductor
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/list.h>
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#include <linux/etherdevice.h>
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#include <linux/netdevice.h>
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#include <linux/phy.h>
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#include <linux/phy_fixed.h>
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#include <linux/of_net.h>
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#include <linux/of_mdio.h>
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#include <linux/mdio.h>
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#include <linux/list.h>
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#include <net/rtnetlink.h>
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#include <net/pkt_cls.h>
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#include <net/tc_act/tc_mirred.h>
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#include <linux/if_bridge.h>
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#include <linux/netpoll.h>
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#include "dsa_priv.h"
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static bool dsa_slave_dev_check(struct net_device *dev);
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/* slave mii_bus handling ***************************************************/
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static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg)
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{
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struct dsa_switch *ds = bus->priv;
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if (ds->phys_mii_mask & (1 << addr))
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return ds->ops->phy_read(ds, addr, reg);
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return 0xffff;
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}
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static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val)
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{
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struct dsa_switch *ds = bus->priv;
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if (ds->phys_mii_mask & (1 << addr))
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return ds->ops->phy_write(ds, addr, reg, val);
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return 0;
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}
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void dsa_slave_mii_bus_init(struct dsa_switch *ds)
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{
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ds->slave_mii_bus->priv = (void *)ds;
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ds->slave_mii_bus->name = "dsa slave smi";
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ds->slave_mii_bus->read = dsa_slave_phy_read;
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ds->slave_mii_bus->write = dsa_slave_phy_write;
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snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d.%d",
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ds->dst->tree, ds->index);
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ds->slave_mii_bus->parent = ds->dev;
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ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask;
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}
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/* slave device handling ****************************************************/
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static int dsa_slave_get_iflink(const struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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return dsa_master_netdev(p)->ifindex;
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}
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static int dsa_slave_open(struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_port *dp = p->dp;
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struct dsa_switch *ds = dp->ds;
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struct net_device *master = dsa_master_netdev(p);
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u8 stp_state = dp->bridge_dev ? BR_STATE_BLOCKING : BR_STATE_FORWARDING;
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int err;
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if (!(master->flags & IFF_UP))
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return -ENETDOWN;
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if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) {
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err = dev_uc_add(master, dev->dev_addr);
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if (err < 0)
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goto out;
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}
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if (dev->flags & IFF_ALLMULTI) {
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err = dev_set_allmulti(master, 1);
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if (err < 0)
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goto del_unicast;
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}
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if (dev->flags & IFF_PROMISC) {
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err = dev_set_promiscuity(master, 1);
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if (err < 0)
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goto clear_allmulti;
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}
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if (ds->ops->port_enable) {
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err = ds->ops->port_enable(ds, p->dp->index, p->phy);
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if (err)
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goto clear_promisc;
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}
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dsa_port_set_state_now(p->dp, stp_state);
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if (p->phy)
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phy_start(p->phy);
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return 0;
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clear_promisc:
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if (dev->flags & IFF_PROMISC)
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dev_set_promiscuity(master, -1);
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clear_allmulti:
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if (dev->flags & IFF_ALLMULTI)
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dev_set_allmulti(master, -1);
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del_unicast:
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if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
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dev_uc_del(master, dev->dev_addr);
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out:
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return err;
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}
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static int dsa_slave_close(struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct net_device *master = dsa_master_netdev(p);
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struct dsa_switch *ds = p->dp->ds;
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if (p->phy)
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phy_stop(p->phy);
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dev_mc_unsync(master, dev);
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dev_uc_unsync(master, dev);
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if (dev->flags & IFF_ALLMULTI)
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dev_set_allmulti(master, -1);
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if (dev->flags & IFF_PROMISC)
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dev_set_promiscuity(master, -1);
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if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
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dev_uc_del(master, dev->dev_addr);
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if (ds->ops->port_disable)
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ds->ops->port_disable(ds, p->dp->index, p->phy);
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dsa_port_set_state_now(p->dp, BR_STATE_DISABLED);
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return 0;
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}
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static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct net_device *master = dsa_master_netdev(p);
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if (change & IFF_ALLMULTI)
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dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1);
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if (change & IFF_PROMISC)
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dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1);
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}
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static void dsa_slave_set_rx_mode(struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct net_device *master = dsa_master_netdev(p);
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dev_mc_sync(master, dev);
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dev_uc_sync(master, dev);
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}
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static int dsa_slave_set_mac_address(struct net_device *dev, void *a)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct net_device *master = dsa_master_netdev(p);
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struct sockaddr *addr = a;
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int err;
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if (!is_valid_ether_addr(addr->sa_data))
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return -EADDRNOTAVAIL;
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if (!(dev->flags & IFF_UP))
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goto out;
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if (!ether_addr_equal(addr->sa_data, master->dev_addr)) {
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err = dev_uc_add(master, addr->sa_data);
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if (err < 0)
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return err;
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}
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if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
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dev_uc_del(master, dev->dev_addr);
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out:
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ether_addr_copy(dev->dev_addr, addr->sa_data);
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return 0;
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}
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struct dsa_slave_dump_ctx {
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struct net_device *dev;
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struct sk_buff *skb;
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struct netlink_callback *cb;
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int idx;
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};
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static int
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dsa_slave_port_fdb_do_dump(const unsigned char *addr, u16 vid,
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bool is_static, void *data)
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{
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struct dsa_slave_dump_ctx *dump = data;
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u32 portid = NETLINK_CB(dump->cb->skb).portid;
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u32 seq = dump->cb->nlh->nlmsg_seq;
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struct nlmsghdr *nlh;
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struct ndmsg *ndm;
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if (dump->idx < dump->cb->args[2])
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goto skip;
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nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
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sizeof(*ndm), NLM_F_MULTI);
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if (!nlh)
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return -EMSGSIZE;
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ndm = nlmsg_data(nlh);
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ndm->ndm_family = AF_BRIDGE;
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ndm->ndm_pad1 = 0;
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ndm->ndm_pad2 = 0;
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ndm->ndm_flags = NTF_SELF;
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ndm->ndm_type = 0;
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ndm->ndm_ifindex = dump->dev->ifindex;
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ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
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if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr))
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goto nla_put_failure;
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if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid))
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goto nla_put_failure;
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nlmsg_end(dump->skb, nlh);
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skip:
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dump->idx++;
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return 0;
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nla_put_failure:
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nlmsg_cancel(dump->skb, nlh);
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return -EMSGSIZE;
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}
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static int
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dsa_slave_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
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struct net_device *dev, struct net_device *filter_dev,
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int *idx)
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{
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struct dsa_slave_dump_ctx dump = {
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.dev = dev,
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.skb = skb,
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.cb = cb,
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.idx = *idx,
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};
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_port *dp = p->dp;
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struct dsa_switch *ds = dp->ds;
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int err;
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if (!ds->ops->port_fdb_dump)
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return -EOPNOTSUPP;
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err = ds->ops->port_fdb_dump(ds, dp->index,
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dsa_slave_port_fdb_do_dump,
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&dump);
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*idx = dump.idx;
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return err;
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}
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static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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if (p->phy != NULL)
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return phy_mii_ioctl(p->phy, ifr, cmd);
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return -EOPNOTSUPP;
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}
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static int dsa_slave_port_attr_set(struct net_device *dev,
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const struct switchdev_attr *attr,
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struct switchdev_trans *trans)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_port *dp = p->dp;
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int ret;
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switch (attr->id) {
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case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
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ret = dsa_port_set_state(dp, attr->u.stp_state, trans);
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break;
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case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
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ret = dsa_port_vlan_filtering(dp, attr->u.vlan_filtering,
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trans);
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break;
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case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
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ret = dsa_port_ageing_time(dp, attr->u.ageing_time, trans);
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break;
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default:
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ret = -EOPNOTSUPP;
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break;
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}
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return ret;
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}
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static int dsa_slave_port_obj_add(struct net_device *dev,
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const struct switchdev_obj *obj,
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struct switchdev_trans *trans)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_port *dp = p->dp;
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int err;
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/* For the prepare phase, ensure the full set of changes is feasable in
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* one go in order to signal a failure properly. If an operation is not
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* supported, return -EOPNOTSUPP.
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*/
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switch (obj->id) {
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case SWITCHDEV_OBJ_ID_PORT_MDB:
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err = dsa_port_mdb_add(dp, SWITCHDEV_OBJ_PORT_MDB(obj), trans);
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break;
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case SWITCHDEV_OBJ_ID_PORT_VLAN:
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err = dsa_port_vlan_add(dp, SWITCHDEV_OBJ_PORT_VLAN(obj),
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trans);
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break;
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default:
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err = -EOPNOTSUPP;
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break;
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}
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return err;
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}
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static int dsa_slave_port_obj_del(struct net_device *dev,
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const struct switchdev_obj *obj)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_port *dp = p->dp;
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int err;
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switch (obj->id) {
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case SWITCHDEV_OBJ_ID_PORT_MDB:
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err = dsa_port_mdb_del(dp, SWITCHDEV_OBJ_PORT_MDB(obj));
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break;
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case SWITCHDEV_OBJ_ID_PORT_VLAN:
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err = dsa_port_vlan_del(dp, SWITCHDEV_OBJ_PORT_VLAN(obj));
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break;
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default:
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err = -EOPNOTSUPP;
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break;
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}
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return err;
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}
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static int dsa_slave_port_attr_get(struct net_device *dev,
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struct switchdev_attr *attr)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct dsa_switch *ds = p->dp->ds;
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switch (attr->id) {
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case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
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attr->u.ppid.id_len = sizeof(ds->index);
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memcpy(&attr->u.ppid.id, &ds->index, attr->u.ppid.id_len);
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break;
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case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT:
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attr->u.brport_flags_support = 0;
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break;
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default:
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return -EOPNOTSUPP;
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}
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return 0;
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}
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static inline netdev_tx_t dsa_netpoll_send_skb(struct dsa_slave_priv *p,
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struct sk_buff *skb)
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{
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#ifdef CONFIG_NET_POLL_CONTROLLER
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if (p->netpoll)
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netpoll_send_skb(p->netpoll, skb);
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#else
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BUG();
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#endif
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return NETDEV_TX_OK;
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}
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static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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struct pcpu_sw_netstats *s;
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struct sk_buff *nskb;
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s = this_cpu_ptr(p->stats64);
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u64_stats_update_begin(&s->syncp);
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s->tx_packets++;
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s->tx_bytes += skb->len;
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u64_stats_update_end(&s->syncp);
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|
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/* Transmit function may have to reallocate the original SKB,
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* in which case it must have freed it. Only free it here on error.
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*/
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nskb = p->xmit(skb, dev);
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if (!nskb) {
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kfree_skb(skb);
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return NETDEV_TX_OK;
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}
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|
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/* SKB for netpoll still need to be mangled with the protocol-specific
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* tag to be successfully transmitted
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*/
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if (unlikely(netpoll_tx_running(dev)))
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return dsa_netpoll_send_skb(p, nskb);
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|
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/* Queue the SKB for transmission on the parent interface, but
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* do not modify its EtherType
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*/
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nskb->dev = dsa_master_netdev(p);
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dev_queue_xmit(nskb);
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|
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return NETDEV_TX_OK;
|
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}
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|
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/* ethtool operations *******************************************************/
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static int
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dsa_slave_get_link_ksettings(struct net_device *dev,
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struct ethtool_link_ksettings *cmd)
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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|
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if (!p->phy)
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return -EOPNOTSUPP;
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|
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phy_ethtool_ksettings_get(p->phy, cmd);
|
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|
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return 0;
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}
|
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|
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static int
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dsa_slave_set_link_ksettings(struct net_device *dev,
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const struct ethtool_link_ksettings *cmd)
|
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
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|
|
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if (p->phy != NULL)
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return phy_ethtool_ksettings_set(p->phy, cmd);
|
|
|
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return -EOPNOTSUPP;
|
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}
|
|
|
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static void dsa_slave_get_drvinfo(struct net_device *dev,
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struct ethtool_drvinfo *drvinfo)
|
|
{
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strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver));
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strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
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strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
|
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}
|
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|
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static int dsa_slave_get_regs_len(struct net_device *dev)
|
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
|
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struct dsa_switch *ds = p->dp->ds;
|
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|
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if (ds->ops->get_regs_len)
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return ds->ops->get_regs_len(ds, p->dp->index);
|
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|
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return -EOPNOTSUPP;
|
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}
|
|
|
|
static void
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dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
|
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{
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struct dsa_slave_priv *p = netdev_priv(dev);
|
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struct dsa_switch *ds = p->dp->ds;
|
|
|
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if (ds->ops->get_regs)
|
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ds->ops->get_regs(ds, p->dp->index, regs, _p);
|
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}
|
|
|
|
static int dsa_slave_nway_reset(struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
|
|
if (p->phy != NULL)
|
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return genphy_restart_aneg(p->phy);
|
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|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static u32 dsa_slave_get_link(struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
|
|
if (p->phy != NULL) {
|
|
genphy_update_link(p->phy);
|
|
return p->phy->link;
|
|
}
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int dsa_slave_get_eeprom_len(struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
if (ds->cd && ds->cd->eeprom_len)
|
|
return ds->cd->eeprom_len;
|
|
|
|
if (ds->ops->get_eeprom_len)
|
|
return ds->ops->get_eeprom_len(ds);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dsa_slave_get_eeprom(struct net_device *dev,
|
|
struct ethtool_eeprom *eeprom, u8 *data)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
if (ds->ops->get_eeprom)
|
|
return ds->ops->get_eeprom(ds, eeprom, data);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int dsa_slave_set_eeprom(struct net_device *dev,
|
|
struct ethtool_eeprom *eeprom, u8 *data)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
if (ds->ops->set_eeprom)
|
|
return ds->ops->set_eeprom(ds, eeprom, data);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static void dsa_slave_get_strings(struct net_device *dev,
|
|
uint32_t stringset, uint8_t *data)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
if (stringset == ETH_SS_STATS) {
|
|
int len = ETH_GSTRING_LEN;
|
|
|
|
strncpy(data, "tx_packets", len);
|
|
strncpy(data + len, "tx_bytes", len);
|
|
strncpy(data + 2 * len, "rx_packets", len);
|
|
strncpy(data + 3 * len, "rx_bytes", len);
|
|
if (ds->ops->get_strings)
|
|
ds->ops->get_strings(ds, p->dp->index, data + 4 * len);
|
|
}
|
|
}
|
|
|
|
static void dsa_cpu_port_get_ethtool_stats(struct net_device *dev,
|
|
struct ethtool_stats *stats,
|
|
uint64_t *data)
|
|
{
|
|
struct dsa_switch_tree *dst = dev->dsa_ptr;
|
|
struct dsa_port *cpu_dp = dsa_get_cpu_port(dst);
|
|
struct dsa_switch *ds = cpu_dp->ds;
|
|
s8 cpu_port = cpu_dp->index;
|
|
int count = 0;
|
|
|
|
if (cpu_dp->ethtool_ops.get_sset_count) {
|
|
count = cpu_dp->ethtool_ops.get_sset_count(dev, ETH_SS_STATS);
|
|
cpu_dp->ethtool_ops.get_ethtool_stats(dev, stats, data);
|
|
}
|
|
|
|
if (ds->ops->get_ethtool_stats)
|
|
ds->ops->get_ethtool_stats(ds, cpu_port, data + count);
|
|
}
|
|
|
|
static int dsa_cpu_port_get_sset_count(struct net_device *dev, int sset)
|
|
{
|
|
struct dsa_switch_tree *dst = dev->dsa_ptr;
|
|
struct dsa_port *cpu_dp = dsa_get_cpu_port(dst);
|
|
struct dsa_switch *ds = cpu_dp->ds;
|
|
int count = 0;
|
|
|
|
if (cpu_dp->ethtool_ops.get_sset_count)
|
|
count += cpu_dp->ethtool_ops.get_sset_count(dev, sset);
|
|
|
|
if (sset == ETH_SS_STATS && ds->ops->get_sset_count)
|
|
count += ds->ops->get_sset_count(ds);
|
|
|
|
return count;
|
|
}
|
|
|
|
static void dsa_cpu_port_get_strings(struct net_device *dev,
|
|
uint32_t stringset, uint8_t *data)
|
|
{
|
|
struct dsa_switch_tree *dst = dev->dsa_ptr;
|
|
struct dsa_port *cpu_dp = dsa_get_cpu_port(dst);
|
|
struct dsa_switch *ds = cpu_dp->ds;
|
|
s8 cpu_port = cpu_dp->index;
|
|
int len = ETH_GSTRING_LEN;
|
|
int mcount = 0, count;
|
|
unsigned int i;
|
|
uint8_t pfx[4];
|
|
uint8_t *ndata;
|
|
|
|
snprintf(pfx, sizeof(pfx), "p%.2d", cpu_port);
|
|
/* We do not want to be NULL-terminated, since this is a prefix */
|
|
pfx[sizeof(pfx) - 1] = '_';
|
|
|
|
if (cpu_dp->ethtool_ops.get_sset_count) {
|
|
mcount = cpu_dp->ethtool_ops.get_sset_count(dev, ETH_SS_STATS);
|
|
cpu_dp->ethtool_ops.get_strings(dev, stringset, data);
|
|
}
|
|
|
|
if (stringset == ETH_SS_STATS && ds->ops->get_strings) {
|
|
ndata = data + mcount * len;
|
|
/* This function copies ETH_GSTRINGS_LEN bytes, we will mangle
|
|
* the output after to prepend our CPU port prefix we
|
|
* constructed earlier
|
|
*/
|
|
ds->ops->get_strings(ds, cpu_port, ndata);
|
|
count = ds->ops->get_sset_count(ds);
|
|
for (i = 0; i < count; i++) {
|
|
memmove(ndata + (i * len + sizeof(pfx)),
|
|
ndata + i * len, len - sizeof(pfx));
|
|
memcpy(ndata + i * len, pfx, sizeof(pfx));
|
|
}
|
|
}
|
|
}
|
|
|
|
static void dsa_slave_get_ethtool_stats(struct net_device *dev,
|
|
struct ethtool_stats *stats,
|
|
uint64_t *data)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
struct pcpu_sw_netstats *s;
|
|
unsigned int start;
|
|
int i;
|
|
|
|
for_each_possible_cpu(i) {
|
|
u64 tx_packets, tx_bytes, rx_packets, rx_bytes;
|
|
|
|
s = per_cpu_ptr(p->stats64, i);
|
|
do {
|
|
start = u64_stats_fetch_begin_irq(&s->syncp);
|
|
tx_packets = s->tx_packets;
|
|
tx_bytes = s->tx_bytes;
|
|
rx_packets = s->rx_packets;
|
|
rx_bytes = s->rx_bytes;
|
|
} while (u64_stats_fetch_retry_irq(&s->syncp, start));
|
|
data[0] += tx_packets;
|
|
data[1] += tx_bytes;
|
|
data[2] += rx_packets;
|
|
data[3] += rx_bytes;
|
|
}
|
|
if (ds->ops->get_ethtool_stats)
|
|
ds->ops->get_ethtool_stats(ds, p->dp->index, data + 4);
|
|
}
|
|
|
|
static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
if (sset == ETH_SS_STATS) {
|
|
int count;
|
|
|
|
count = 4;
|
|
if (ds->ops->get_sset_count)
|
|
count += ds->ops->get_sset_count(ds);
|
|
|
|
return count;
|
|
}
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
if (ds->ops->get_wol)
|
|
ds->ops->get_wol(ds, p->dp->index, w);
|
|
}
|
|
|
|
static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
int ret = -EOPNOTSUPP;
|
|
|
|
if (ds->ops->set_wol)
|
|
ret = ds->ops->set_wol(ds, p->dp->index, w);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
int ret;
|
|
|
|
/* Port's PHY and MAC both need to be EEE capable */
|
|
if (!p->phy)
|
|
return -ENODEV;
|
|
|
|
if (!ds->ops->set_mac_eee)
|
|
return -EOPNOTSUPP;
|
|
|
|
ret = ds->ops->set_mac_eee(ds, p->dp->index, e);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (e->eee_enabled) {
|
|
ret = phy_init_eee(p->phy, 0);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return phy_ethtool_set_eee(p->phy, e);
|
|
}
|
|
|
|
static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
int ret;
|
|
|
|
/* Port's PHY and MAC both need to be EEE capable */
|
|
if (!p->phy)
|
|
return -ENODEV;
|
|
|
|
if (!ds->ops->get_mac_eee)
|
|
return -EOPNOTSUPP;
|
|
|
|
ret = ds->ops->get_mac_eee(ds, p->dp->index, e);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return phy_ethtool_get_eee(p->phy, e);
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
static int dsa_slave_netpoll_setup(struct net_device *dev,
|
|
struct netpoll_info *ni)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct net_device *master = dsa_master_netdev(p);
|
|
struct netpoll *netpoll;
|
|
int err = 0;
|
|
|
|
netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
|
|
if (!netpoll)
|
|
return -ENOMEM;
|
|
|
|
err = __netpoll_setup(netpoll, master);
|
|
if (err) {
|
|
kfree(netpoll);
|
|
goto out;
|
|
}
|
|
|
|
p->netpoll = netpoll;
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static void dsa_slave_netpoll_cleanup(struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct netpoll *netpoll = p->netpoll;
|
|
|
|
if (!netpoll)
|
|
return;
|
|
|
|
p->netpoll = NULL;
|
|
|
|
__netpoll_free_async(netpoll);
|
|
}
|
|
|
|
static void dsa_slave_poll_controller(struct net_device *dev)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
static int dsa_slave_get_phys_port_name(struct net_device *dev,
|
|
char *name, size_t len)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
|
|
if (snprintf(name, len, "p%d", p->dp->index) >= len)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct dsa_mall_tc_entry *
|
|
dsa_slave_mall_tc_entry_find(struct dsa_slave_priv *p,
|
|
unsigned long cookie)
|
|
{
|
|
struct dsa_mall_tc_entry *mall_tc_entry;
|
|
|
|
list_for_each_entry(mall_tc_entry, &p->mall_tc_list, list)
|
|
if (mall_tc_entry->cookie == cookie)
|
|
return mall_tc_entry;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int dsa_slave_add_cls_matchall(struct net_device *dev,
|
|
struct tc_cls_matchall_offload *cls,
|
|
bool ingress)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_mall_tc_entry *mall_tc_entry;
|
|
__be16 protocol = cls->common.protocol;
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
struct net *net = dev_net(dev);
|
|
struct dsa_slave_priv *to_p;
|
|
struct net_device *to_dev;
|
|
const struct tc_action *a;
|
|
int err = -EOPNOTSUPP;
|
|
LIST_HEAD(actions);
|
|
int ifindex;
|
|
|
|
if (!ds->ops->port_mirror_add)
|
|
return err;
|
|
|
|
if (!tcf_exts_has_one_action(cls->exts))
|
|
return err;
|
|
|
|
tcf_exts_to_list(cls->exts, &actions);
|
|
a = list_first_entry(&actions, struct tc_action, list);
|
|
|
|
if (is_tcf_mirred_egress_mirror(a) && protocol == htons(ETH_P_ALL)) {
|
|
struct dsa_mall_mirror_tc_entry *mirror;
|
|
|
|
ifindex = tcf_mirred_ifindex(a);
|
|
to_dev = __dev_get_by_index(net, ifindex);
|
|
if (!to_dev)
|
|
return -EINVAL;
|
|
|
|
if (!dsa_slave_dev_check(to_dev))
|
|
return -EOPNOTSUPP;
|
|
|
|
mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
|
|
if (!mall_tc_entry)
|
|
return -ENOMEM;
|
|
|
|
mall_tc_entry->cookie = cls->cookie;
|
|
mall_tc_entry->type = DSA_PORT_MALL_MIRROR;
|
|
mirror = &mall_tc_entry->mirror;
|
|
|
|
to_p = netdev_priv(to_dev);
|
|
|
|
mirror->to_local_port = to_p->dp->index;
|
|
mirror->ingress = ingress;
|
|
|
|
err = ds->ops->port_mirror_add(ds, p->dp->index, mirror,
|
|
ingress);
|
|
if (err) {
|
|
kfree(mall_tc_entry);
|
|
return err;
|
|
}
|
|
|
|
list_add_tail(&mall_tc_entry->list, &p->mall_tc_list);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dsa_slave_del_cls_matchall(struct net_device *dev,
|
|
struct tc_cls_matchall_offload *cls)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_mall_tc_entry *mall_tc_entry;
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
if (!ds->ops->port_mirror_del)
|
|
return;
|
|
|
|
mall_tc_entry = dsa_slave_mall_tc_entry_find(p, cls->cookie);
|
|
if (!mall_tc_entry)
|
|
return;
|
|
|
|
list_del(&mall_tc_entry->list);
|
|
|
|
switch (mall_tc_entry->type) {
|
|
case DSA_PORT_MALL_MIRROR:
|
|
ds->ops->port_mirror_del(ds, p->dp->index,
|
|
&mall_tc_entry->mirror);
|
|
break;
|
|
default:
|
|
WARN_ON(1);
|
|
}
|
|
|
|
kfree(mall_tc_entry);
|
|
}
|
|
|
|
static int dsa_slave_setup_tc_cls_matchall(struct net_device *dev,
|
|
struct tc_cls_matchall_offload *cls)
|
|
{
|
|
bool ingress;
|
|
|
|
if (is_classid_clsact_ingress(cls->common.classid))
|
|
ingress = true;
|
|
else if (is_classid_clsact_egress(cls->common.classid))
|
|
ingress = false;
|
|
else
|
|
return -EOPNOTSUPP;
|
|
|
|
if (cls->common.chain_index)
|
|
return -EOPNOTSUPP;
|
|
|
|
switch (cls->command) {
|
|
case TC_CLSMATCHALL_REPLACE:
|
|
return dsa_slave_add_cls_matchall(dev, cls, ingress);
|
|
case TC_CLSMATCHALL_DESTROY:
|
|
dsa_slave_del_cls_matchall(dev, cls);
|
|
return 0;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
static int dsa_slave_setup_tc(struct net_device *dev, enum tc_setup_type type,
|
|
void *type_data)
|
|
{
|
|
switch (type) {
|
|
case TC_SETUP_CLSMATCHALL:
|
|
return dsa_slave_setup_tc_cls_matchall(dev, type_data);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
static void dsa_slave_get_stats64(struct net_device *dev,
|
|
struct rtnl_link_stats64 *stats)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct pcpu_sw_netstats *s;
|
|
unsigned int start;
|
|
int i;
|
|
|
|
netdev_stats_to_stats64(stats, &dev->stats);
|
|
for_each_possible_cpu(i) {
|
|
u64 tx_packets, tx_bytes, rx_packets, rx_bytes;
|
|
|
|
s = per_cpu_ptr(p->stats64, i);
|
|
do {
|
|
start = u64_stats_fetch_begin_irq(&s->syncp);
|
|
tx_packets = s->tx_packets;
|
|
tx_bytes = s->tx_bytes;
|
|
rx_packets = s->rx_packets;
|
|
rx_bytes = s->rx_bytes;
|
|
} while (u64_stats_fetch_retry_irq(&s->syncp, start));
|
|
|
|
stats->tx_packets += tx_packets;
|
|
stats->tx_bytes += tx_bytes;
|
|
stats->rx_packets += rx_packets;
|
|
stats->rx_bytes += rx_bytes;
|
|
}
|
|
}
|
|
|
|
void dsa_cpu_port_ethtool_init(struct ethtool_ops *ops)
|
|
{
|
|
ops->get_sset_count = dsa_cpu_port_get_sset_count;
|
|
ops->get_ethtool_stats = dsa_cpu_port_get_ethtool_stats;
|
|
ops->get_strings = dsa_cpu_port_get_strings;
|
|
}
|
|
|
|
static int dsa_slave_get_rxnfc(struct net_device *dev,
|
|
struct ethtool_rxnfc *nfc, u32 *rule_locs)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
if (!ds->ops->get_rxnfc)
|
|
return -EOPNOTSUPP;
|
|
|
|
return ds->ops->get_rxnfc(ds, p->dp->index, nfc, rule_locs);
|
|
}
|
|
|
|
static int dsa_slave_set_rxnfc(struct net_device *dev,
|
|
struct ethtool_rxnfc *nfc)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
if (!ds->ops->set_rxnfc)
|
|
return -EOPNOTSUPP;
|
|
|
|
return ds->ops->set_rxnfc(ds, p->dp->index, nfc);
|
|
}
|
|
|
|
static const struct ethtool_ops dsa_slave_ethtool_ops = {
|
|
.get_drvinfo = dsa_slave_get_drvinfo,
|
|
.get_regs_len = dsa_slave_get_regs_len,
|
|
.get_regs = dsa_slave_get_regs,
|
|
.nway_reset = dsa_slave_nway_reset,
|
|
.get_link = dsa_slave_get_link,
|
|
.get_eeprom_len = dsa_slave_get_eeprom_len,
|
|
.get_eeprom = dsa_slave_get_eeprom,
|
|
.set_eeprom = dsa_slave_set_eeprom,
|
|
.get_strings = dsa_slave_get_strings,
|
|
.get_ethtool_stats = dsa_slave_get_ethtool_stats,
|
|
.get_sset_count = dsa_slave_get_sset_count,
|
|
.set_wol = dsa_slave_set_wol,
|
|
.get_wol = dsa_slave_get_wol,
|
|
.set_eee = dsa_slave_set_eee,
|
|
.get_eee = dsa_slave_get_eee,
|
|
.get_link_ksettings = dsa_slave_get_link_ksettings,
|
|
.set_link_ksettings = dsa_slave_set_link_ksettings,
|
|
.get_rxnfc = dsa_slave_get_rxnfc,
|
|
.set_rxnfc = dsa_slave_set_rxnfc,
|
|
};
|
|
|
|
static const struct net_device_ops dsa_slave_netdev_ops = {
|
|
.ndo_open = dsa_slave_open,
|
|
.ndo_stop = dsa_slave_close,
|
|
.ndo_start_xmit = dsa_slave_xmit,
|
|
.ndo_change_rx_flags = dsa_slave_change_rx_flags,
|
|
.ndo_set_rx_mode = dsa_slave_set_rx_mode,
|
|
.ndo_set_mac_address = dsa_slave_set_mac_address,
|
|
.ndo_fdb_add = dsa_legacy_fdb_add,
|
|
.ndo_fdb_del = dsa_legacy_fdb_del,
|
|
.ndo_fdb_dump = dsa_slave_fdb_dump,
|
|
.ndo_do_ioctl = dsa_slave_ioctl,
|
|
.ndo_get_iflink = dsa_slave_get_iflink,
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
.ndo_netpoll_setup = dsa_slave_netpoll_setup,
|
|
.ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup,
|
|
.ndo_poll_controller = dsa_slave_poll_controller,
|
|
#endif
|
|
.ndo_get_phys_port_name = dsa_slave_get_phys_port_name,
|
|
.ndo_setup_tc = dsa_slave_setup_tc,
|
|
.ndo_get_stats64 = dsa_slave_get_stats64,
|
|
};
|
|
|
|
static const struct switchdev_ops dsa_slave_switchdev_ops = {
|
|
.switchdev_port_attr_get = dsa_slave_port_attr_get,
|
|
.switchdev_port_attr_set = dsa_slave_port_attr_set,
|
|
.switchdev_port_obj_add = dsa_slave_port_obj_add,
|
|
.switchdev_port_obj_del = dsa_slave_port_obj_del,
|
|
};
|
|
|
|
static struct device_type dsa_type = {
|
|
.name = "dsa",
|
|
};
|
|
|
|
static void dsa_slave_adjust_link(struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
unsigned int status_changed = 0;
|
|
|
|
if (p->old_link != p->phy->link) {
|
|
status_changed = 1;
|
|
p->old_link = p->phy->link;
|
|
}
|
|
|
|
if (p->old_duplex != p->phy->duplex) {
|
|
status_changed = 1;
|
|
p->old_duplex = p->phy->duplex;
|
|
}
|
|
|
|
if (p->old_pause != p->phy->pause) {
|
|
status_changed = 1;
|
|
p->old_pause = p->phy->pause;
|
|
}
|
|
|
|
if (ds->ops->adjust_link && status_changed)
|
|
ds->ops->adjust_link(ds, p->dp->index, p->phy);
|
|
|
|
if (status_changed)
|
|
phy_print_status(p->phy);
|
|
}
|
|
|
|
static int dsa_slave_fixed_link_update(struct net_device *dev,
|
|
struct fixed_phy_status *status)
|
|
{
|
|
struct dsa_slave_priv *p;
|
|
struct dsa_switch *ds;
|
|
|
|
if (dev) {
|
|
p = netdev_priv(dev);
|
|
ds = p->dp->ds;
|
|
if (ds->ops->fixed_link_update)
|
|
ds->ops->fixed_link_update(ds, p->dp->index, status);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* slave device setup *******************************************************/
|
|
static int dsa_slave_phy_connect(struct dsa_slave_priv *p,
|
|
struct net_device *slave_dev,
|
|
int addr)
|
|
{
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
p->phy = mdiobus_get_phy(ds->slave_mii_bus, addr);
|
|
if (!p->phy) {
|
|
netdev_err(slave_dev, "no phy at %d\n", addr);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Use already configured phy mode */
|
|
if (p->phy_interface == PHY_INTERFACE_MODE_NA)
|
|
p->phy_interface = p->phy->interface;
|
|
return phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link,
|
|
p->phy_interface);
|
|
}
|
|
|
|
static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
|
|
struct net_device *slave_dev)
|
|
{
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
struct device_node *phy_dn, *port_dn;
|
|
bool phy_is_fixed = false;
|
|
u32 phy_flags = 0;
|
|
int mode, ret;
|
|
|
|
port_dn = p->dp->dn;
|
|
mode = of_get_phy_mode(port_dn);
|
|
if (mode < 0)
|
|
mode = PHY_INTERFACE_MODE_NA;
|
|
p->phy_interface = mode;
|
|
|
|
phy_dn = of_parse_phandle(port_dn, "phy-handle", 0);
|
|
if (!phy_dn && of_phy_is_fixed_link(port_dn)) {
|
|
/* In the case of a fixed PHY, the DT node associated
|
|
* to the fixed PHY is the Port DT node
|
|
*/
|
|
ret = of_phy_register_fixed_link(port_dn);
|
|
if (ret) {
|
|
netdev_err(slave_dev, "failed to register fixed PHY: %d\n", ret);
|
|
return ret;
|
|
}
|
|
phy_is_fixed = true;
|
|
phy_dn = of_node_get(port_dn);
|
|
}
|
|
|
|
if (ds->ops->get_phy_flags)
|
|
phy_flags = ds->ops->get_phy_flags(ds, p->dp->index);
|
|
|
|
if (phy_dn) {
|
|
int phy_id = of_mdio_parse_addr(&slave_dev->dev, phy_dn);
|
|
|
|
/* If this PHY address is part of phys_mii_mask, which means
|
|
* that we need to divert reads and writes to/from it, then we
|
|
* want to bind this device using the slave MII bus created by
|
|
* DSA to make that happen.
|
|
*/
|
|
if (!phy_is_fixed && phy_id >= 0 &&
|
|
(ds->phys_mii_mask & (1 << phy_id))) {
|
|
ret = dsa_slave_phy_connect(p, slave_dev, phy_id);
|
|
if (ret) {
|
|
netdev_err(slave_dev, "failed to connect to phy%d: %d\n", phy_id, ret);
|
|
of_node_put(phy_dn);
|
|
return ret;
|
|
}
|
|
} else {
|
|
p->phy = of_phy_connect(slave_dev, phy_dn,
|
|
dsa_slave_adjust_link,
|
|
phy_flags,
|
|
p->phy_interface);
|
|
}
|
|
|
|
of_node_put(phy_dn);
|
|
}
|
|
|
|
if (p->phy && phy_is_fixed)
|
|
fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update);
|
|
|
|
/* We could not connect to a designated PHY, so use the switch internal
|
|
* MDIO bus instead
|
|
*/
|
|
if (!p->phy) {
|
|
ret = dsa_slave_phy_connect(p, slave_dev, p->dp->index);
|
|
if (ret) {
|
|
netdev_err(slave_dev, "failed to connect to port %d: %d\n",
|
|
p->dp->index, ret);
|
|
if (phy_is_fixed)
|
|
of_phy_deregister_fixed_link(port_dn);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
phy_attached_info(p->phy);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct lock_class_key dsa_slave_netdev_xmit_lock_key;
|
|
static void dsa_slave_set_lockdep_class_one(struct net_device *dev,
|
|
struct netdev_queue *txq,
|
|
void *_unused)
|
|
{
|
|
lockdep_set_class(&txq->_xmit_lock,
|
|
&dsa_slave_netdev_xmit_lock_key);
|
|
}
|
|
|
|
int dsa_slave_suspend(struct net_device *slave_dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(slave_dev);
|
|
|
|
netif_device_detach(slave_dev);
|
|
|
|
if (p->phy) {
|
|
phy_stop(p->phy);
|
|
p->old_pause = -1;
|
|
p->old_link = -1;
|
|
p->old_duplex = -1;
|
|
phy_suspend(p->phy);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int dsa_slave_resume(struct net_device *slave_dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(slave_dev);
|
|
|
|
netif_device_attach(slave_dev);
|
|
|
|
if (p->phy) {
|
|
phy_resume(p->phy);
|
|
phy_start(p->phy);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int dsa_slave_create(struct dsa_port *port, const char *name)
|
|
{
|
|
struct dsa_switch *ds = port->ds;
|
|
struct dsa_switch_tree *dst = ds->dst;
|
|
struct net_device *master;
|
|
struct net_device *slave_dev;
|
|
struct dsa_slave_priv *p;
|
|
struct dsa_port *cpu_dp;
|
|
int ret;
|
|
|
|
cpu_dp = ds->dst->cpu_dp;
|
|
master = cpu_dp->netdev;
|
|
|
|
if (!ds->num_tx_queues)
|
|
ds->num_tx_queues = 1;
|
|
|
|
slave_dev = alloc_netdev_mqs(sizeof(struct dsa_slave_priv), name,
|
|
NET_NAME_UNKNOWN, ether_setup,
|
|
ds->num_tx_queues, 1);
|
|
if (slave_dev == NULL)
|
|
return -ENOMEM;
|
|
|
|
slave_dev->features = master->vlan_features | NETIF_F_HW_TC;
|
|
slave_dev->hw_features |= NETIF_F_HW_TC;
|
|
slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
|
|
eth_hw_addr_inherit(slave_dev, master);
|
|
slave_dev->priv_flags |= IFF_NO_QUEUE;
|
|
slave_dev->netdev_ops = &dsa_slave_netdev_ops;
|
|
slave_dev->switchdev_ops = &dsa_slave_switchdev_ops;
|
|
slave_dev->min_mtu = 0;
|
|
slave_dev->max_mtu = ETH_MAX_MTU;
|
|
SET_NETDEV_DEVTYPE(slave_dev, &dsa_type);
|
|
|
|
netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one,
|
|
NULL);
|
|
|
|
SET_NETDEV_DEV(slave_dev, port->ds->dev);
|
|
slave_dev->dev.of_node = port->dn;
|
|
slave_dev->vlan_features = master->vlan_features;
|
|
|
|
p = netdev_priv(slave_dev);
|
|
p->stats64 = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
|
|
if (!p->stats64) {
|
|
free_netdev(slave_dev);
|
|
return -ENOMEM;
|
|
}
|
|
p->dp = port;
|
|
INIT_LIST_HEAD(&p->mall_tc_list);
|
|
p->xmit = dst->tag_ops->xmit;
|
|
|
|
p->old_pause = -1;
|
|
p->old_link = -1;
|
|
p->old_duplex = -1;
|
|
|
|
port->netdev = slave_dev;
|
|
ret = register_netdev(slave_dev);
|
|
if (ret) {
|
|
netdev_err(master, "error %d registering interface %s\n",
|
|
ret, slave_dev->name);
|
|
port->netdev = NULL;
|
|
free_percpu(p->stats64);
|
|
free_netdev(slave_dev);
|
|
return ret;
|
|
}
|
|
|
|
netif_carrier_off(slave_dev);
|
|
|
|
ret = dsa_slave_phy_setup(p, slave_dev);
|
|
if (ret) {
|
|
netdev_err(master, "error %d setting up slave phy\n", ret);
|
|
unregister_netdev(slave_dev);
|
|
free_percpu(p->stats64);
|
|
free_netdev(slave_dev);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void dsa_slave_destroy(struct net_device *slave_dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(slave_dev);
|
|
struct device_node *port_dn;
|
|
|
|
port_dn = p->dp->dn;
|
|
|
|
netif_carrier_off(slave_dev);
|
|
if (p->phy) {
|
|
phy_disconnect(p->phy);
|
|
|
|
if (of_phy_is_fixed_link(port_dn))
|
|
of_phy_deregister_fixed_link(port_dn);
|
|
}
|
|
unregister_netdev(slave_dev);
|
|
free_percpu(p->stats64);
|
|
free_netdev(slave_dev);
|
|
}
|
|
|
|
static bool dsa_slave_dev_check(struct net_device *dev)
|
|
{
|
|
return dev->netdev_ops == &dsa_slave_netdev_ops;
|
|
}
|
|
|
|
static int dsa_slave_changeupper(struct net_device *dev,
|
|
struct netdev_notifier_changeupper_info *info)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_port *dp = p->dp;
|
|
int err = NOTIFY_DONE;
|
|
|
|
if (netif_is_bridge_master(info->upper_dev)) {
|
|
if (info->linking) {
|
|
err = dsa_port_bridge_join(dp, info->upper_dev);
|
|
err = notifier_from_errno(err);
|
|
} else {
|
|
dsa_port_bridge_leave(dp, info->upper_dev);
|
|
err = NOTIFY_OK;
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int dsa_slave_netdevice_event(struct notifier_block *nb,
|
|
unsigned long event, void *ptr)
|
|
{
|
|
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
|
|
|
|
if (dev->netdev_ops != &dsa_slave_netdev_ops)
|
|
return NOTIFY_DONE;
|
|
|
|
if (event == NETDEV_CHANGEUPPER)
|
|
return dsa_slave_changeupper(dev, ptr);
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
struct dsa_switchdev_event_work {
|
|
struct work_struct work;
|
|
struct switchdev_notifier_fdb_info fdb_info;
|
|
struct net_device *dev;
|
|
unsigned long event;
|
|
};
|
|
|
|
static void dsa_slave_switchdev_event_work(struct work_struct *work)
|
|
{
|
|
struct dsa_switchdev_event_work *switchdev_work =
|
|
container_of(work, struct dsa_switchdev_event_work, work);
|
|
struct net_device *dev = switchdev_work->dev;
|
|
struct switchdev_notifier_fdb_info *fdb_info;
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
int err;
|
|
|
|
rtnl_lock();
|
|
switch (switchdev_work->event) {
|
|
case SWITCHDEV_FDB_ADD_TO_DEVICE:
|
|
fdb_info = &switchdev_work->fdb_info;
|
|
err = dsa_port_fdb_add(p->dp, fdb_info->addr, fdb_info->vid);
|
|
if (err) {
|
|
netdev_dbg(dev, "fdb add failed err=%d\n", err);
|
|
break;
|
|
}
|
|
call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev,
|
|
&fdb_info->info);
|
|
break;
|
|
|
|
case SWITCHDEV_FDB_DEL_TO_DEVICE:
|
|
fdb_info = &switchdev_work->fdb_info;
|
|
err = dsa_port_fdb_del(p->dp, fdb_info->addr, fdb_info->vid);
|
|
if (err) {
|
|
netdev_dbg(dev, "fdb del failed err=%d\n", err);
|
|
dev_close(dev);
|
|
}
|
|
break;
|
|
}
|
|
rtnl_unlock();
|
|
|
|
kfree(switchdev_work->fdb_info.addr);
|
|
kfree(switchdev_work);
|
|
dev_put(dev);
|
|
}
|
|
|
|
static int
|
|
dsa_slave_switchdev_fdb_work_init(struct dsa_switchdev_event_work *
|
|
switchdev_work,
|
|
const struct switchdev_notifier_fdb_info *
|
|
fdb_info)
|
|
{
|
|
memcpy(&switchdev_work->fdb_info, fdb_info,
|
|
sizeof(switchdev_work->fdb_info));
|
|
switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC);
|
|
if (!switchdev_work->fdb_info.addr)
|
|
return -ENOMEM;
|
|
ether_addr_copy((u8 *)switchdev_work->fdb_info.addr,
|
|
fdb_info->addr);
|
|
return 0;
|
|
}
|
|
|
|
/* Called under rcu_read_lock() */
|
|
static int dsa_slave_switchdev_event(struct notifier_block *unused,
|
|
unsigned long event, void *ptr)
|
|
{
|
|
struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
|
|
struct dsa_switchdev_event_work *switchdev_work;
|
|
|
|
if (!dsa_slave_dev_check(dev))
|
|
return NOTIFY_DONE;
|
|
|
|
switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
|
|
if (!switchdev_work)
|
|
return NOTIFY_BAD;
|
|
|
|
INIT_WORK(&switchdev_work->work,
|
|
dsa_slave_switchdev_event_work);
|
|
switchdev_work->dev = dev;
|
|
switchdev_work->event = event;
|
|
|
|
switch (event) {
|
|
case SWITCHDEV_FDB_ADD_TO_DEVICE: /* fall through */
|
|
case SWITCHDEV_FDB_DEL_TO_DEVICE:
|
|
if (dsa_slave_switchdev_fdb_work_init(switchdev_work,
|
|
ptr))
|
|
goto err_fdb_work_init;
|
|
dev_hold(dev);
|
|
break;
|
|
default:
|
|
kfree(switchdev_work);
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
dsa_schedule_work(&switchdev_work->work);
|
|
return NOTIFY_OK;
|
|
|
|
err_fdb_work_init:
|
|
kfree(switchdev_work);
|
|
return NOTIFY_BAD;
|
|
}
|
|
|
|
static struct notifier_block dsa_slave_nb __read_mostly = {
|
|
.notifier_call = dsa_slave_netdevice_event,
|
|
};
|
|
|
|
static struct notifier_block dsa_slave_switchdev_notifier = {
|
|
.notifier_call = dsa_slave_switchdev_event,
|
|
};
|
|
|
|
int dsa_slave_register_notifier(void)
|
|
{
|
|
int err;
|
|
|
|
err = register_netdevice_notifier(&dsa_slave_nb);
|
|
if (err)
|
|
return err;
|
|
|
|
err = register_switchdev_notifier(&dsa_slave_switchdev_notifier);
|
|
if (err)
|
|
goto err_switchdev_nb;
|
|
|
|
return 0;
|
|
|
|
err_switchdev_nb:
|
|
unregister_netdevice_notifier(&dsa_slave_nb);
|
|
return err;
|
|
}
|
|
|
|
void dsa_slave_unregister_notifier(void)
|
|
{
|
|
int err;
|
|
|
|
err = unregister_switchdev_notifier(&dsa_slave_switchdev_notifier);
|
|
if (err)
|
|
pr_err("DSA: failed to unregister switchdev notifier (%d)\n", err);
|
|
|
|
err = unregister_netdevice_notifier(&dsa_slave_nb);
|
|
if (err)
|
|
pr_err("DSA: failed to unregister slave notifier (%d)\n", err);
|
|
}
|