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71d4364abd
Now that DSA supports MTU configuration, undo the effects of commit
8b1efc0f83 ("net: remove MTU limits on a few ether_setup callers") and
let DSA interfaces use the default min_mtu and max_mtu specified by
ether_setup(). This is more important for min_mtu: since DSA is
Ethernet, the minimum MTU is the same as of any other Ethernet
interface, and definitely not zero. For the max_mtu, we have a callback
through which drivers can override that, if they want to.
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2115 lines
52 KiB
C
2115 lines
52 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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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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#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/phylink.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 <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 <linux/ptp_classify.h>
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#include "dsa_priv.h"
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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->index, 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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return dsa_slave_to_master(dev)->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 net_device *master = dsa_slave_to_master(dev);
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struct dsa_port *dp = dsa_slave_to_port(dev);
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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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err = dsa_port_enable_rt(dp, dev->phydev);
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if (err)
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goto clear_promisc;
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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 net_device *master = dsa_slave_to_master(dev);
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struct dsa_port *dp = dsa_slave_to_port(dev);
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dsa_port_disable_rt(dp);
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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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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 net_device *master = dsa_slave_to_master(dev);
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if (dev->flags & IFF_UP) {
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if (change & IFF_ALLMULTI)
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dev_set_allmulti(master,
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dev->flags & IFF_ALLMULTI ? 1 : -1);
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if (change & IFF_PROMISC)
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dev_set_promiscuity(master,
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dev->flags & IFF_PROMISC ? 1 : -1);
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}
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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 net_device *master = dsa_slave_to_master(dev);
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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 net_device *master = dsa_slave_to_master(dev);
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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_port *dp = dsa_slave_to_port(dev);
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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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int err;
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err = dsa_port_fdb_dump(dp, dsa_slave_port_fdb_do_dump, &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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struct dsa_switch *ds = p->dp->ds;
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int port = p->dp->index;
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/* Pass through to switch driver if it supports timestamping */
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switch (cmd) {
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case SIOCGHWTSTAMP:
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if (ds->ops->port_hwtstamp_get)
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return ds->ops->port_hwtstamp_get(ds, port, ifr);
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break;
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case SIOCSHWTSTAMP:
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if (ds->ops->port_hwtstamp_set)
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return ds->ops->port_hwtstamp_set(ds, port, ifr);
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break;
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}
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return phylink_mii_ioctl(p->dp->pl, ifr, cmd);
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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_port *dp = dsa_slave_to_port(dev);
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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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case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
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ret = dsa_port_pre_bridge_flags(dp, attr->u.brport_flags,
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trans);
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break;
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case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
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ret = dsa_port_bridge_flags(dp, attr->u.brport_flags, trans);
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break;
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case SWITCHDEV_ATTR_ID_BRIDGE_MROUTER:
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ret = dsa_port_mrouter(dp->cpu_dp, attr->u.mrouter, 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_vlan_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_port *dp = dsa_slave_to_port(dev);
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struct switchdev_obj_port_vlan vlan;
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int err;
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if (obj->orig_dev != dev)
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return -EOPNOTSUPP;
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if (dsa_port_skip_vlan_configuration(dp))
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return 0;
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vlan = *SWITCHDEV_OBJ_PORT_VLAN(obj);
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err = dsa_port_vlan_add(dp, &vlan, trans);
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if (err)
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return err;
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/* We need the dedicated CPU port to be a member of the VLAN as well.
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* Even though drivers often handle CPU membership in special ways,
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* it doesn't make sense to program a PVID, so clear this flag.
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*/
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vlan.flags &= ~BRIDGE_VLAN_INFO_PVID;
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err = dsa_port_vlan_add(dp->cpu_dp, &vlan, trans);
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if (err)
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return err;
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return 0;
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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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struct netlink_ext_ack *extack)
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{
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struct dsa_port *dp = dsa_slave_to_port(dev);
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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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if (obj->orig_dev != dev)
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return -EOPNOTSUPP;
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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_HOST_MDB:
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/* DSA can directly translate this to a normal MDB add,
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* but on the CPU port.
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*/
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err = dsa_port_mdb_add(dp->cpu_dp, SWITCHDEV_OBJ_PORT_MDB(obj),
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trans);
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break;
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case SWITCHDEV_OBJ_ID_PORT_VLAN:
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err = dsa_slave_vlan_add(dev, obj, 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_vlan_del(struct net_device *dev,
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const struct switchdev_obj *obj)
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{
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struct dsa_port *dp = dsa_slave_to_port(dev);
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if (obj->orig_dev != dev)
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return -EOPNOTSUPP;
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if (dsa_port_skip_vlan_configuration(dp))
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return 0;
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/* Do not deprogram the CPU port as it may be shared with other user
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* ports which can be members of this VLAN as well.
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*/
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return dsa_port_vlan_del(dp, SWITCHDEV_OBJ_PORT_VLAN(obj));
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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_port *dp = dsa_slave_to_port(dev);
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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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if (obj->orig_dev != dev)
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return -EOPNOTSUPP;
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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_HOST_MDB:
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/* DSA can directly translate this to a normal MDB add,
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* but on the CPU port.
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*/
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err = dsa_port_mdb_del(dp->cpu_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_slave_vlan_del(dev, 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_get_port_parent_id(struct net_device *dev,
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struct netdev_phys_item_id *ppid)
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{
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struct dsa_port *dp = dsa_slave_to_port(dev);
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struct dsa_switch *ds = dp->ds;
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struct dsa_switch_tree *dst = ds->dst;
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/* For non-legacy ports, devlink is used and it takes
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* care of the name generation. This ndo implementation
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* should be removed with legacy support.
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*/
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if (dp->ds->devlink)
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return -EOPNOTSUPP;
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ppid->id_len = sizeof(dst->index);
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memcpy(&ppid->id, &dst->index, ppid->id_len);
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return 0;
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}
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|
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static inline netdev_tx_t dsa_slave_netpoll_send_skb(struct net_device *dev,
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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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struct dsa_slave_priv *p = netdev_priv(dev);
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return netpoll_send_skb(p->netpoll, skb);
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#else
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BUG();
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return NETDEV_TX_OK;
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#endif
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}
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static void dsa_skb_tx_timestamp(struct dsa_slave_priv *p,
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struct sk_buff *skb)
|
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{
|
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struct dsa_switch *ds = p->dp->ds;
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struct sk_buff *clone;
|
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unsigned int type;
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type = ptp_classify_raw(skb);
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if (type == PTP_CLASS_NONE)
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return;
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|
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if (!ds->ops->port_txtstamp)
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return;
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|
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clone = skb_clone_sk(skb);
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if (!clone)
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return;
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DSA_SKB_CB(skb)->clone = clone;
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|
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if (ds->ops->port_txtstamp(ds, p->dp->index, clone, type))
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return;
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|
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kfree_skb(clone);
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}
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|
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netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
/* SKB for netpoll still need to be mangled with the protocol-specific
|
|
* tag to be successfully transmitted
|
|
*/
|
|
if (unlikely(netpoll_tx_running(dev)))
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return dsa_slave_netpoll_send_skb(dev, skb);
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|
|
/* Queue the SKB for transmission on the parent interface, but
|
|
* do not modify its EtherType
|
|
*/
|
|
skb->dev = dsa_slave_to_master(dev);
|
|
dev_queue_xmit(skb);
|
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|
|
return NETDEV_TX_OK;
|
|
}
|
|
EXPORT_SYMBOL_GPL(dsa_enqueue_skb);
|
|
|
|
static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct pcpu_sw_netstats *s;
|
|
struct sk_buff *nskb;
|
|
|
|
s = this_cpu_ptr(p->stats64);
|
|
u64_stats_update_begin(&s->syncp);
|
|
s->tx_packets++;
|
|
s->tx_bytes += skb->len;
|
|
u64_stats_update_end(&s->syncp);
|
|
|
|
DSA_SKB_CB(skb)->clone = NULL;
|
|
|
|
/* Identify PTP protocol packets, clone them, and pass them to the
|
|
* switch driver
|
|
*/
|
|
dsa_skb_tx_timestamp(p, skb);
|
|
|
|
/* Transmit function may have to reallocate the original SKB,
|
|
* in which case it must have freed it. Only free it here on error.
|
|
*/
|
|
nskb = p->xmit(skb, dev);
|
|
if (!nskb) {
|
|
kfree_skb(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
return dsa_enqueue_skb(nskb, dev);
|
|
}
|
|
|
|
/* ethtool operations *******************************************************/
|
|
|
|
static void dsa_slave_get_drvinfo(struct net_device *dev,
|
|
struct ethtool_drvinfo *drvinfo)
|
|
{
|
|
strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver));
|
|
strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
|
|
strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
|
|
}
|
|
|
|
static int dsa_slave_get_regs_len(struct net_device *dev)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
if (ds->ops->get_regs_len)
|
|
return ds->ops->get_regs_len(ds, dp->index);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static void
|
|
dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
if (ds->ops->get_regs)
|
|
ds->ops->get_regs(ds, dp->index, regs, _p);
|
|
}
|
|
|
|
static int dsa_slave_nway_reset(struct net_device *dev)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
|
|
return phylink_ethtool_nway_reset(dp->pl);
|
|
}
|
|
|
|
static int dsa_slave_get_eeprom_len(struct net_device *dev)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = 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_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = 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_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = 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_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = 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, dp->index, stringset,
|
|
data + 4 * len);
|
|
}
|
|
}
|
|
|
|
static void dsa_slave_get_ethtool_stats(struct net_device *dev,
|
|
struct ethtool_stats *stats,
|
|
uint64_t *data)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = 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, dp->index, data + 4);
|
|
}
|
|
|
|
static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
if (sset == ETH_SS_STATS) {
|
|
int count;
|
|
|
|
count = 4;
|
|
if (ds->ops->get_sset_count)
|
|
count += ds->ops->get_sset_count(ds, dp->index, sset);
|
|
|
|
return count;
|
|
}
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
phylink_ethtool_get_wol(dp->pl, w);
|
|
|
|
if (ds->ops->get_wol)
|
|
ds->ops->get_wol(ds, dp->index, w);
|
|
}
|
|
|
|
static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = dp->ds;
|
|
int ret = -EOPNOTSUPP;
|
|
|
|
phylink_ethtool_set_wol(dp->pl, w);
|
|
|
|
if (ds->ops->set_wol)
|
|
ret = ds->ops->set_wol(ds, dp->index, w);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = dp->ds;
|
|
int ret;
|
|
|
|
/* Port's PHY and MAC both need to be EEE capable */
|
|
if (!dev->phydev || !dp->pl)
|
|
return -ENODEV;
|
|
|
|
if (!ds->ops->set_mac_eee)
|
|
return -EOPNOTSUPP;
|
|
|
|
ret = ds->ops->set_mac_eee(ds, dp->index, e);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return phylink_ethtool_set_eee(dp->pl, e);
|
|
}
|
|
|
|
static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = dp->ds;
|
|
int ret;
|
|
|
|
/* Port's PHY and MAC both need to be EEE capable */
|
|
if (!dev->phydev || !dp->pl)
|
|
return -ENODEV;
|
|
|
|
if (!ds->ops->get_mac_eee)
|
|
return -EOPNOTSUPP;
|
|
|
|
ret = ds->ops->get_mac_eee(ds, dp->index, e);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return phylink_ethtool_get_eee(dp->pl, e);
|
|
}
|
|
|
|
static int dsa_slave_get_link_ksettings(struct net_device *dev,
|
|
struct ethtool_link_ksettings *cmd)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
|
|
return phylink_ethtool_ksettings_get(dp->pl, cmd);
|
|
}
|
|
|
|
static int dsa_slave_set_link_ksettings(struct net_device *dev,
|
|
const struct ethtool_link_ksettings *cmd)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
|
|
return phylink_ethtool_ksettings_set(dp->pl, cmd);
|
|
}
|
|
|
|
static void dsa_slave_get_pauseparam(struct net_device *dev,
|
|
struct ethtool_pauseparam *pause)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
|
|
phylink_ethtool_get_pauseparam(dp->pl, pause);
|
|
}
|
|
|
|
static int dsa_slave_set_pauseparam(struct net_device *dev,
|
|
struct ethtool_pauseparam *pause)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
|
|
return phylink_ethtool_set_pauseparam(dp->pl, pause);
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
static int dsa_slave_netpoll_setup(struct net_device *dev,
|
|
struct netpoll_info *ni)
|
|
{
|
|
struct net_device *master = dsa_slave_to_master(dev);
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
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(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_port *dp = dsa_slave_to_port(dev);
|
|
|
|
/* For non-legacy ports, devlink is used and it takes
|
|
* care of the name generation. This ndo implementation
|
|
* should be removed with legacy support.
|
|
*/
|
|
if (dp->ds->devlink)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (snprintf(name, len, "p%d", dp->index) >= len)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct dsa_mall_tc_entry *
|
|
dsa_slave_mall_tc_entry_find(struct net_device *dev, unsigned long cookie)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
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_mirred(struct net_device *dev,
|
|
struct tc_cls_matchall_offload *cls,
|
|
bool ingress)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_mall_mirror_tc_entry *mirror;
|
|
struct dsa_mall_tc_entry *mall_tc_entry;
|
|
struct dsa_switch *ds = dp->ds;
|
|
struct flow_action_entry *act;
|
|
struct dsa_port *to_dp;
|
|
int err;
|
|
|
|
if (!ds->ops->port_mirror_add)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!flow_action_basic_hw_stats_check(&cls->rule->action,
|
|
cls->common.extack))
|
|
return -EOPNOTSUPP;
|
|
|
|
act = &cls->rule->action.entries[0];
|
|
|
|
if (!act->dev)
|
|
return -EINVAL;
|
|
|
|
if (!dsa_slave_dev_check(act->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_dp = dsa_slave_to_port(act->dev);
|
|
|
|
mirror->to_local_port = to_dp->index;
|
|
mirror->ingress = ingress;
|
|
|
|
err = ds->ops->port_mirror_add(ds, dp->index, mirror, ingress);
|
|
if (err) {
|
|
kfree(mall_tc_entry);
|
|
return err;
|
|
}
|
|
|
|
list_add_tail(&mall_tc_entry->list, &p->mall_tc_list);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
dsa_slave_add_cls_matchall_police(struct net_device *dev,
|
|
struct tc_cls_matchall_offload *cls,
|
|
bool ingress)
|
|
{
|
|
struct netlink_ext_ack *extack = cls->common.extack;
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_mall_policer_tc_entry *policer;
|
|
struct dsa_mall_tc_entry *mall_tc_entry;
|
|
struct dsa_switch *ds = dp->ds;
|
|
struct flow_action_entry *act;
|
|
int err;
|
|
|
|
if (!ds->ops->port_policer_add) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Policing offload not implemented");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (!ingress) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Only supported on ingress qdisc");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (!flow_action_basic_hw_stats_check(&cls->rule->action,
|
|
cls->common.extack))
|
|
return -EOPNOTSUPP;
|
|
|
|
list_for_each_entry(mall_tc_entry, &p->mall_tc_list, list) {
|
|
if (mall_tc_entry->type == DSA_PORT_MALL_POLICER) {
|
|
NL_SET_ERR_MSG_MOD(extack,
|
|
"Only one port policer allowed");
|
|
return -EEXIST;
|
|
}
|
|
}
|
|
|
|
act = &cls->rule->action.entries[0];
|
|
|
|
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_POLICER;
|
|
policer = &mall_tc_entry->policer;
|
|
policer->rate_bytes_per_sec = act->police.rate_bytes_ps;
|
|
policer->burst = act->police.burst;
|
|
|
|
err = ds->ops->port_policer_add(ds, dp->index, policer);
|
|
if (err) {
|
|
kfree(mall_tc_entry);
|
|
return err;
|
|
}
|
|
|
|
list_add_tail(&mall_tc_entry->list, &p->mall_tc_list);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int dsa_slave_add_cls_matchall(struct net_device *dev,
|
|
struct tc_cls_matchall_offload *cls,
|
|
bool ingress)
|
|
{
|
|
int err = -EOPNOTSUPP;
|
|
|
|
if (cls->common.protocol == htons(ETH_P_ALL) &&
|
|
flow_offload_has_one_action(&cls->rule->action) &&
|
|
cls->rule->action.entries[0].id == FLOW_ACTION_MIRRED)
|
|
err = dsa_slave_add_cls_matchall_mirred(dev, cls, ingress);
|
|
else if (flow_offload_has_one_action(&cls->rule->action) &&
|
|
cls->rule->action.entries[0].id == FLOW_ACTION_POLICE)
|
|
err = dsa_slave_add_cls_matchall_police(dev, cls, ingress);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void dsa_slave_del_cls_matchall(struct net_device *dev,
|
|
struct tc_cls_matchall_offload *cls)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_mall_tc_entry *mall_tc_entry;
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
mall_tc_entry = dsa_slave_mall_tc_entry_find(dev, cls->cookie);
|
|
if (!mall_tc_entry)
|
|
return;
|
|
|
|
list_del(&mall_tc_entry->list);
|
|
|
|
switch (mall_tc_entry->type) {
|
|
case DSA_PORT_MALL_MIRROR:
|
|
if (ds->ops->port_mirror_del)
|
|
ds->ops->port_mirror_del(ds, dp->index,
|
|
&mall_tc_entry->mirror);
|
|
break;
|
|
case DSA_PORT_MALL_POLICER:
|
|
if (ds->ops->port_policer_del)
|
|
ds->ops->port_policer_del(ds, dp->index);
|
|
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 (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_add_cls_flower(struct net_device *dev,
|
|
struct flow_cls_offload *cls,
|
|
bool ingress)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = dp->ds;
|
|
int port = dp->index;
|
|
|
|
if (!ds->ops->cls_flower_add)
|
|
return -EOPNOTSUPP;
|
|
|
|
return ds->ops->cls_flower_add(ds, port, cls, ingress);
|
|
}
|
|
|
|
static int dsa_slave_del_cls_flower(struct net_device *dev,
|
|
struct flow_cls_offload *cls,
|
|
bool ingress)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = dp->ds;
|
|
int port = dp->index;
|
|
|
|
if (!ds->ops->cls_flower_del)
|
|
return -EOPNOTSUPP;
|
|
|
|
return ds->ops->cls_flower_del(ds, port, cls, ingress);
|
|
}
|
|
|
|
static int dsa_slave_stats_cls_flower(struct net_device *dev,
|
|
struct flow_cls_offload *cls,
|
|
bool ingress)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = dp->ds;
|
|
int port = dp->index;
|
|
|
|
if (!ds->ops->cls_flower_stats)
|
|
return -EOPNOTSUPP;
|
|
|
|
return ds->ops->cls_flower_stats(ds, port, cls, ingress);
|
|
}
|
|
|
|
static int dsa_slave_setup_tc_cls_flower(struct net_device *dev,
|
|
struct flow_cls_offload *cls,
|
|
bool ingress)
|
|
{
|
|
switch (cls->command) {
|
|
case FLOW_CLS_REPLACE:
|
|
return dsa_slave_add_cls_flower(dev, cls, ingress);
|
|
case FLOW_CLS_DESTROY:
|
|
return dsa_slave_del_cls_flower(dev, cls, ingress);
|
|
case FLOW_CLS_STATS:
|
|
return dsa_slave_stats_cls_flower(dev, cls, ingress);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
static int dsa_slave_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
|
|
void *cb_priv, bool ingress)
|
|
{
|
|
struct net_device *dev = cb_priv;
|
|
|
|
if (!tc_can_offload(dev))
|
|
return -EOPNOTSUPP;
|
|
|
|
switch (type) {
|
|
case TC_SETUP_CLSMATCHALL:
|
|
return dsa_slave_setup_tc_cls_matchall(dev, type_data, ingress);
|
|
case TC_SETUP_CLSFLOWER:
|
|
return dsa_slave_setup_tc_cls_flower(dev, type_data, ingress);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
static int dsa_slave_setup_tc_block_cb_ig(enum tc_setup_type type,
|
|
void *type_data, void *cb_priv)
|
|
{
|
|
return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, true);
|
|
}
|
|
|
|
static int dsa_slave_setup_tc_block_cb_eg(enum tc_setup_type type,
|
|
void *type_data, void *cb_priv)
|
|
{
|
|
return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, false);
|
|
}
|
|
|
|
static LIST_HEAD(dsa_slave_block_cb_list);
|
|
|
|
static int dsa_slave_setup_tc_block(struct net_device *dev,
|
|
struct flow_block_offload *f)
|
|
{
|
|
struct flow_block_cb *block_cb;
|
|
flow_setup_cb_t *cb;
|
|
|
|
if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
|
|
cb = dsa_slave_setup_tc_block_cb_ig;
|
|
else if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS)
|
|
cb = dsa_slave_setup_tc_block_cb_eg;
|
|
else
|
|
return -EOPNOTSUPP;
|
|
|
|
f->driver_block_list = &dsa_slave_block_cb_list;
|
|
|
|
switch (f->command) {
|
|
case FLOW_BLOCK_BIND:
|
|
if (flow_block_cb_is_busy(cb, dev, &dsa_slave_block_cb_list))
|
|
return -EBUSY;
|
|
|
|
block_cb = flow_block_cb_alloc(cb, dev, dev, NULL);
|
|
if (IS_ERR(block_cb))
|
|
return PTR_ERR(block_cb);
|
|
|
|
flow_block_cb_add(block_cb, f);
|
|
list_add_tail(&block_cb->driver_list, &dsa_slave_block_cb_list);
|
|
return 0;
|
|
case FLOW_BLOCK_UNBIND:
|
|
block_cb = flow_block_cb_lookup(f->block, cb, dev);
|
|
if (!block_cb)
|
|
return -ENOENT;
|
|
|
|
flow_block_cb_remove(block_cb, f);
|
|
list_del(&block_cb->driver_list);
|
|
return 0;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
static int dsa_slave_setup_tc(struct net_device *dev, enum tc_setup_type type,
|
|
void *type_data)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
if (type == TC_SETUP_BLOCK)
|
|
return dsa_slave_setup_tc_block(dev, type_data);
|
|
|
|
if (!ds->ops->port_setup_tc)
|
|
return -EOPNOTSUPP;
|
|
|
|
return ds->ops->port_setup_tc(ds, dp->index, type, type_data);
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
static int dsa_slave_get_rxnfc(struct net_device *dev,
|
|
struct ethtool_rxnfc *nfc, u32 *rule_locs)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
if (!ds->ops->get_rxnfc)
|
|
return -EOPNOTSUPP;
|
|
|
|
return ds->ops->get_rxnfc(ds, dp->index, nfc, rule_locs);
|
|
}
|
|
|
|
static int dsa_slave_set_rxnfc(struct net_device *dev,
|
|
struct ethtool_rxnfc *nfc)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
if (!ds->ops->set_rxnfc)
|
|
return -EOPNOTSUPP;
|
|
|
|
return ds->ops->set_rxnfc(ds, dp->index, nfc);
|
|
}
|
|
|
|
static int dsa_slave_get_ts_info(struct net_device *dev,
|
|
struct ethtool_ts_info *ts)
|
|
{
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
|
|
if (!ds->ops->get_ts_info)
|
|
return -EOPNOTSUPP;
|
|
|
|
return ds->ops->get_ts_info(ds, p->dp->index, ts);
|
|
}
|
|
|
|
static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
|
|
u16 vid)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct bridge_vlan_info info;
|
|
int ret;
|
|
|
|
/* Check for a possible bridge VLAN entry now since there is no
|
|
* need to emulate the switchdev prepare + commit phase.
|
|
*/
|
|
if (dp->bridge_dev) {
|
|
if (dsa_port_skip_vlan_configuration(dp))
|
|
return 0;
|
|
|
|
/* br_vlan_get_info() returns -EINVAL or -ENOENT if the
|
|
* device, respectively the VID is not found, returning
|
|
* 0 means success, which is a failure for us here.
|
|
*/
|
|
ret = br_vlan_get_info(dp->bridge_dev, vid, &info);
|
|
if (ret == 0)
|
|
return -EBUSY;
|
|
}
|
|
|
|
ret = dsa_port_vid_add(dp, vid, 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = dsa_port_vid_add(dp->cpu_dp, vid, 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dsa_slave_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
|
|
u16 vid)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct bridge_vlan_info info;
|
|
int ret;
|
|
|
|
/* Check for a possible bridge VLAN entry now since there is no
|
|
* need to emulate the switchdev prepare + commit phase.
|
|
*/
|
|
if (dp->bridge_dev) {
|
|
if (dsa_port_skip_vlan_configuration(dp))
|
|
return 0;
|
|
|
|
/* br_vlan_get_info() returns -EINVAL or -ENOENT if the
|
|
* device, respectively the VID is not found, returning
|
|
* 0 means success, which is a failure for us here.
|
|
*/
|
|
ret = br_vlan_get_info(dp->bridge_dev, vid, &info);
|
|
if (ret == 0)
|
|
return -EBUSY;
|
|
}
|
|
|
|
/* Do not deprogram the CPU port as it may be shared with other user
|
|
* ports which can be members of this VLAN as well.
|
|
*/
|
|
return dsa_port_vid_del(dp, vid);
|
|
}
|
|
|
|
struct dsa_hw_port {
|
|
struct list_head list;
|
|
struct net_device *dev;
|
|
int old_mtu;
|
|
};
|
|
|
|
static int dsa_hw_port_list_set_mtu(struct list_head *hw_port_list, int mtu)
|
|
{
|
|
const struct dsa_hw_port *p;
|
|
int err;
|
|
|
|
list_for_each_entry(p, hw_port_list, list) {
|
|
if (p->dev->mtu == mtu)
|
|
continue;
|
|
|
|
err = dev_set_mtu(p->dev, mtu);
|
|
if (err)
|
|
goto rollback;
|
|
}
|
|
|
|
return 0;
|
|
|
|
rollback:
|
|
list_for_each_entry_continue_reverse(p, hw_port_list, list) {
|
|
if (p->dev->mtu == p->old_mtu)
|
|
continue;
|
|
|
|
if (dev_set_mtu(p->dev, p->old_mtu))
|
|
netdev_err(p->dev, "Failed to restore MTU\n");
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static void dsa_hw_port_list_free(struct list_head *hw_port_list)
|
|
{
|
|
struct dsa_hw_port *p, *n;
|
|
|
|
list_for_each_entry_safe(p, n, hw_port_list, list)
|
|
kfree(p);
|
|
}
|
|
|
|
/* Make the hardware datapath to/from @dev limited to a common MTU */
|
|
static void dsa_bridge_mtu_normalization(struct dsa_port *dp)
|
|
{
|
|
struct list_head hw_port_list;
|
|
struct dsa_switch_tree *dst;
|
|
int min_mtu = ETH_MAX_MTU;
|
|
struct dsa_port *other_dp;
|
|
int err;
|
|
|
|
if (!dp->ds->mtu_enforcement_ingress)
|
|
return;
|
|
|
|
if (!dp->bridge_dev)
|
|
return;
|
|
|
|
INIT_LIST_HEAD(&hw_port_list);
|
|
|
|
/* Populate the list of ports that are part of the same bridge
|
|
* as the newly added/modified port
|
|
*/
|
|
list_for_each_entry(dst, &dsa_tree_list, list) {
|
|
list_for_each_entry(other_dp, &dst->ports, list) {
|
|
struct dsa_hw_port *hw_port;
|
|
struct net_device *slave;
|
|
|
|
if (other_dp->type != DSA_PORT_TYPE_USER)
|
|
continue;
|
|
|
|
if (other_dp->bridge_dev != dp->bridge_dev)
|
|
continue;
|
|
|
|
if (!other_dp->ds->mtu_enforcement_ingress)
|
|
continue;
|
|
|
|
slave = other_dp->slave;
|
|
|
|
if (min_mtu > slave->mtu)
|
|
min_mtu = slave->mtu;
|
|
|
|
hw_port = kzalloc(sizeof(*hw_port), GFP_KERNEL);
|
|
if (!hw_port)
|
|
goto out;
|
|
|
|
hw_port->dev = slave;
|
|
hw_port->old_mtu = slave->mtu;
|
|
|
|
list_add(&hw_port->list, &hw_port_list);
|
|
}
|
|
}
|
|
|
|
/* Attempt to configure the entire hardware bridge to the newly added
|
|
* interface's MTU first, regardless of whether the intention of the
|
|
* user was to raise or lower it.
|
|
*/
|
|
err = dsa_hw_port_list_set_mtu(&hw_port_list, dp->slave->mtu);
|
|
if (!err)
|
|
goto out;
|
|
|
|
/* Clearly that didn't work out so well, so just set the minimum MTU on
|
|
* all hardware bridge ports now. If this fails too, then all ports will
|
|
* still have their old MTU rolled back anyway.
|
|
*/
|
|
dsa_hw_port_list_set_mtu(&hw_port_list, min_mtu);
|
|
|
|
out:
|
|
dsa_hw_port_list_free(&hw_port_list);
|
|
}
|
|
|
|
static int dsa_slave_change_mtu(struct net_device *dev, int new_mtu)
|
|
{
|
|
struct net_device *master = dsa_slave_to_master(dev);
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_slave_priv *p = netdev_priv(dev);
|
|
struct dsa_switch *ds = p->dp->ds;
|
|
struct dsa_port *cpu_dp;
|
|
int port = p->dp->index;
|
|
int largest_mtu = 0;
|
|
int new_master_mtu;
|
|
int old_master_mtu;
|
|
int mtu_limit;
|
|
int cpu_mtu;
|
|
int err, i;
|
|
|
|
if (!ds->ops->port_change_mtu)
|
|
return -EOPNOTSUPP;
|
|
|
|
for (i = 0; i < ds->num_ports; i++) {
|
|
int slave_mtu;
|
|
|
|
if (!dsa_is_user_port(ds, i))
|
|
continue;
|
|
|
|
/* During probe, this function will be called for each slave
|
|
* device, while not all of them have been allocated. That's
|
|
* ok, it doesn't change what the maximum is, so ignore it.
|
|
*/
|
|
if (!dsa_to_port(ds, i)->slave)
|
|
continue;
|
|
|
|
/* Pretend that we already applied the setting, which we
|
|
* actually haven't (still haven't done all integrity checks)
|
|
*/
|
|
if (i == port)
|
|
slave_mtu = new_mtu;
|
|
else
|
|
slave_mtu = dsa_to_port(ds, i)->slave->mtu;
|
|
|
|
if (largest_mtu < slave_mtu)
|
|
largest_mtu = slave_mtu;
|
|
}
|
|
|
|
cpu_dp = dsa_to_port(ds, port)->cpu_dp;
|
|
|
|
mtu_limit = min_t(int, master->max_mtu, dev->max_mtu);
|
|
old_master_mtu = master->mtu;
|
|
new_master_mtu = largest_mtu + cpu_dp->tag_ops->overhead;
|
|
if (new_master_mtu > mtu_limit)
|
|
return -ERANGE;
|
|
|
|
/* If the master MTU isn't over limit, there's no need to check the CPU
|
|
* MTU, since that surely isn't either.
|
|
*/
|
|
cpu_mtu = largest_mtu;
|
|
|
|
/* Start applying stuff */
|
|
if (new_master_mtu != old_master_mtu) {
|
|
err = dev_set_mtu(master, new_master_mtu);
|
|
if (err < 0)
|
|
goto out_master_failed;
|
|
|
|
/* We only need to propagate the MTU of the CPU port to
|
|
* upstream switches.
|
|
*/
|
|
err = dsa_port_mtu_change(cpu_dp, cpu_mtu, true);
|
|
if (err)
|
|
goto out_cpu_failed;
|
|
}
|
|
|
|
err = dsa_port_mtu_change(dp, new_mtu, false);
|
|
if (err)
|
|
goto out_port_failed;
|
|
|
|
dev->mtu = new_mtu;
|
|
|
|
dsa_bridge_mtu_normalization(dp);
|
|
|
|
return 0;
|
|
|
|
out_port_failed:
|
|
if (new_master_mtu != old_master_mtu)
|
|
dsa_port_mtu_change(cpu_dp, old_master_mtu -
|
|
cpu_dp->tag_ops->overhead,
|
|
true);
|
|
out_cpu_failed:
|
|
if (new_master_mtu != old_master_mtu)
|
|
dev_set_mtu(master, old_master_mtu);
|
|
out_master_failed:
|
|
return err;
|
|
}
|
|
|
|
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 = ethtool_op_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_pauseparam = dsa_slave_get_pauseparam,
|
|
.set_pauseparam = dsa_slave_set_pauseparam,
|
|
.get_rxnfc = dsa_slave_get_rxnfc,
|
|
.set_rxnfc = dsa_slave_set_rxnfc,
|
|
.get_ts_info = dsa_slave_get_ts_info,
|
|
};
|
|
|
|
/* legacy way, bypassing the bridge *****************************************/
|
|
int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
|
|
struct net_device *dev,
|
|
const unsigned char *addr, u16 vid,
|
|
u16 flags,
|
|
struct netlink_ext_ack *extack)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
|
|
return dsa_port_fdb_add(dp, addr, vid);
|
|
}
|
|
|
|
int dsa_legacy_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
|
|
struct net_device *dev,
|
|
const unsigned char *addr, u16 vid)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
|
|
return dsa_port_fdb_del(dp, addr, vid);
|
|
}
|
|
|
|
static struct devlink_port *dsa_slave_get_devlink_port(struct net_device *dev)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
|
|
return dp->ds->devlink ? &dp->devlink_port : NULL;
|
|
}
|
|
|
|
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,
|
|
.ndo_get_port_parent_id = dsa_slave_get_port_parent_id,
|
|
.ndo_vlan_rx_add_vid = dsa_slave_vlan_rx_add_vid,
|
|
.ndo_vlan_rx_kill_vid = dsa_slave_vlan_rx_kill_vid,
|
|
.ndo_get_devlink_port = dsa_slave_get_devlink_port,
|
|
.ndo_change_mtu = dsa_slave_change_mtu,
|
|
};
|
|
|
|
static struct device_type dsa_type = {
|
|
.name = "dsa",
|
|
};
|
|
|
|
void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up)
|
|
{
|
|
const struct dsa_port *dp = dsa_to_port(ds, port);
|
|
|
|
if (dp->pl)
|
|
phylink_mac_change(dp->pl, up);
|
|
}
|
|
EXPORT_SYMBOL_GPL(dsa_port_phylink_mac_change);
|
|
|
|
static void dsa_slave_phylink_fixed_state(struct phylink_config *config,
|
|
struct phylink_link_state *state)
|
|
{
|
|
struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
/* No need to check that this operation is valid, the callback would
|
|
* not be called if it was not.
|
|
*/
|
|
ds->ops->phylink_fixed_state(ds, dp->index, state);
|
|
}
|
|
|
|
/* slave device setup *******************************************************/
|
|
static int dsa_slave_phy_connect(struct net_device *slave_dev, int addr)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(slave_dev);
|
|
struct dsa_switch *ds = dp->ds;
|
|
|
|
slave_dev->phydev = mdiobus_get_phy(ds->slave_mii_bus, addr);
|
|
if (!slave_dev->phydev) {
|
|
netdev_err(slave_dev, "no phy at %d\n", addr);
|
|
return -ENODEV;
|
|
}
|
|
|
|
return phylink_connect_phy(dp->pl, slave_dev->phydev);
|
|
}
|
|
|
|
static int dsa_slave_phy_setup(struct net_device *slave_dev)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(slave_dev);
|
|
struct device_node *port_dn = dp->dn;
|
|
struct dsa_switch *ds = dp->ds;
|
|
phy_interface_t mode;
|
|
u32 phy_flags = 0;
|
|
int ret;
|
|
|
|
ret = of_get_phy_mode(port_dn, &mode);
|
|
if (ret)
|
|
mode = PHY_INTERFACE_MODE_NA;
|
|
|
|
dp->pl_config.dev = &slave_dev->dev;
|
|
dp->pl_config.type = PHYLINK_NETDEV;
|
|
|
|
/* The get_fixed_state callback takes precedence over polling the
|
|
* link GPIO in PHYLINK (see phylink_get_fixed_state). Only set
|
|
* this if the switch provides such a callback.
|
|
*/
|
|
if (ds->ops->phylink_fixed_state) {
|
|
dp->pl_config.get_fixed_state = dsa_slave_phylink_fixed_state;
|
|
dp->pl_config.poll_fixed_state = true;
|
|
}
|
|
|
|
dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn), mode,
|
|
&dsa_port_phylink_mac_ops);
|
|
if (IS_ERR(dp->pl)) {
|
|
netdev_err(slave_dev,
|
|
"error creating PHYLINK: %ld\n", PTR_ERR(dp->pl));
|
|
return PTR_ERR(dp->pl);
|
|
}
|
|
|
|
if (ds->ops->get_phy_flags)
|
|
phy_flags = ds->ops->get_phy_flags(ds, dp->index);
|
|
|
|
ret = phylink_of_phy_connect(dp->pl, port_dn, phy_flags);
|
|
if (ret == -ENODEV && ds->slave_mii_bus) {
|
|
/* We could not connect to a designated PHY or SFP, so try to
|
|
* use the switch internal MDIO bus instead
|
|
*/
|
|
ret = dsa_slave_phy_connect(slave_dev, dp->index);
|
|
if (ret) {
|
|
netdev_err(slave_dev,
|
|
"failed to connect to port %d: %d\n",
|
|
dp->index, ret);
|
|
phylink_destroy(dp->pl);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
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_port *dp = dsa_slave_to_port(slave_dev);
|
|
|
|
if (!netif_running(slave_dev))
|
|
return 0;
|
|
|
|
netif_device_detach(slave_dev);
|
|
|
|
rtnl_lock();
|
|
phylink_stop(dp->pl);
|
|
rtnl_unlock();
|
|
|
|
return 0;
|
|
}
|
|
|
|
int dsa_slave_resume(struct net_device *slave_dev)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(slave_dev);
|
|
|
|
if (!netif_running(slave_dev))
|
|
return 0;
|
|
|
|
netif_device_attach(slave_dev);
|
|
|
|
rtnl_lock();
|
|
phylink_start(dp->pl);
|
|
rtnl_unlock();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dsa_slave_notify(struct net_device *dev, unsigned long val)
|
|
{
|
|
struct net_device *master = dsa_slave_to_master(dev);
|
|
struct dsa_port *dp = dsa_slave_to_port(dev);
|
|
struct dsa_notifier_register_info rinfo = {
|
|
.switch_number = dp->ds->index,
|
|
.port_number = dp->index,
|
|
.master = master,
|
|
.info.dev = dev,
|
|
};
|
|
|
|
call_dsa_notifiers(val, dev, &rinfo.info);
|
|
}
|
|
|
|
int dsa_slave_create(struct dsa_port *port)
|
|
{
|
|
const struct dsa_port *cpu_dp = port->cpu_dp;
|
|
struct net_device *master = cpu_dp->master;
|
|
struct dsa_switch *ds = port->ds;
|
|
const char *name = port->name;
|
|
struct net_device *slave_dev;
|
|
struct dsa_slave_priv *p;
|
|
int ret;
|
|
|
|
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;
|
|
if (ds->ops->port_vlan_add && ds->ops->port_vlan_del)
|
|
slave_dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
|
|
slave_dev->hw_features |= NETIF_F_HW_TC;
|
|
slave_dev->features |= NETIF_F_LLTX;
|
|
slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
|
|
if (!IS_ERR_OR_NULL(port->mac))
|
|
ether_addr_copy(slave_dev->dev_addr, port->mac);
|
|
else
|
|
eth_hw_addr_inherit(slave_dev, master);
|
|
slave_dev->priv_flags |= IFF_NO_QUEUE;
|
|
slave_dev->netdev_ops = &dsa_slave_netdev_ops;
|
|
if (ds->ops->port_max_mtu)
|
|
slave_dev->max_mtu = ds->ops->port_max_mtu(ds, port->index);
|
|
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;
|
|
}
|
|
|
|
ret = gro_cells_init(&p->gcells, slave_dev);
|
|
if (ret)
|
|
goto out_free;
|
|
|
|
p->dp = port;
|
|
INIT_LIST_HEAD(&p->mall_tc_list);
|
|
p->xmit = cpu_dp->tag_ops->xmit;
|
|
port->slave = slave_dev;
|
|
|
|
rtnl_lock();
|
|
ret = dsa_slave_change_mtu(slave_dev, ETH_DATA_LEN);
|
|
rtnl_unlock();
|
|
if (ret)
|
|
dev_warn(ds->dev, "nonfatal error %d setting MTU on port %d\n",
|
|
ret, port->index);
|
|
|
|
netif_carrier_off(slave_dev);
|
|
|
|
ret = dsa_slave_phy_setup(slave_dev);
|
|
if (ret) {
|
|
netdev_err(master, "error %d setting up slave PHY for %s\n",
|
|
ret, slave_dev->name);
|
|
goto out_gcells;
|
|
}
|
|
|
|
dsa_slave_notify(slave_dev, DSA_PORT_REGISTER);
|
|
|
|
ret = register_netdev(slave_dev);
|
|
if (ret) {
|
|
netdev_err(master, "error %d registering interface %s\n",
|
|
ret, slave_dev->name);
|
|
goto out_phy;
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_phy:
|
|
rtnl_lock();
|
|
phylink_disconnect_phy(p->dp->pl);
|
|
rtnl_unlock();
|
|
phylink_destroy(p->dp->pl);
|
|
out_gcells:
|
|
gro_cells_destroy(&p->gcells);
|
|
out_free:
|
|
free_percpu(p->stats64);
|
|
free_netdev(slave_dev);
|
|
port->slave = NULL;
|
|
return ret;
|
|
}
|
|
|
|
void dsa_slave_destroy(struct net_device *slave_dev)
|
|
{
|
|
struct dsa_port *dp = dsa_slave_to_port(slave_dev);
|
|
struct dsa_slave_priv *p = netdev_priv(slave_dev);
|
|
|
|
netif_carrier_off(slave_dev);
|
|
rtnl_lock();
|
|
phylink_disconnect_phy(dp->pl);
|
|
rtnl_unlock();
|
|
|
|
dsa_slave_notify(slave_dev, DSA_PORT_UNREGISTER);
|
|
unregister_netdev(slave_dev);
|
|
phylink_destroy(dp->pl);
|
|
gro_cells_destroy(&p->gcells);
|
|
free_percpu(p->stats64);
|
|
free_netdev(slave_dev);
|
|
}
|
|
|
|
bool dsa_slave_dev_check(const 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_port *dp = dsa_slave_to_port(dev);
|
|
int err = NOTIFY_DONE;
|
|
|
|
if (netif_is_bridge_master(info->upper_dev)) {
|
|
if (info->linking) {
|
|
err = dsa_port_bridge_join(dp, info->upper_dev);
|
|
if (!err)
|
|
dsa_bridge_mtu_normalization(dp);
|
|
err = notifier_from_errno(err);
|
|
} else {
|
|
dsa_port_bridge_leave(dp, info->upper_dev);
|
|
err = NOTIFY_OK;
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int dsa_slave_upper_vlan_check(struct net_device *dev,
|
|
struct netdev_notifier_changeupper_info *
|
|
info)
|
|
{
|
|
struct netlink_ext_ack *ext_ack;
|
|
struct net_device *slave;
|
|
struct dsa_port *dp;
|
|
|
|
ext_ack = netdev_notifier_info_to_extack(&info->info);
|
|
|
|
if (!is_vlan_dev(dev))
|
|
return NOTIFY_DONE;
|
|
|
|
slave = vlan_dev_real_dev(dev);
|
|
if (!dsa_slave_dev_check(slave))
|
|
return NOTIFY_DONE;
|
|
|
|
dp = dsa_slave_to_port(slave);
|
|
if (!dp->bridge_dev)
|
|
return NOTIFY_DONE;
|
|
|
|
/* Deny enslaving a VLAN device into a VLAN-aware bridge */
|
|
if (br_vlan_enabled(dp->bridge_dev) &&
|
|
netif_is_bridge_master(info->upper_dev) && info->linking) {
|
|
NL_SET_ERR_MSG_MOD(ext_ack,
|
|
"Cannot enslave VLAN device into VLAN aware bridge");
|
|
return notifier_from_errno(-EINVAL);
|
|
}
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
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 (event == NETDEV_CHANGEUPPER) {
|
|
if (!dsa_slave_dev_check(dev))
|
|
return dsa_slave_upper_vlan_check(dev, ptr);
|
|
|
|
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_port *dp = dsa_slave_to_port(dev);
|
|
int err;
|
|
|
|
rtnl_lock();
|
|
switch (switchdev_work->event) {
|
|
case SWITCHDEV_FDB_ADD_TO_DEVICE:
|
|
fdb_info = &switchdev_work->fdb_info;
|
|
if (!fdb_info->added_by_user)
|
|
break;
|
|
|
|
err = dsa_port_fdb_add(dp, fdb_info->addr, fdb_info->vid);
|
|
if (err) {
|
|
netdev_dbg(dev, "fdb add failed err=%d\n", err);
|
|
break;
|
|
}
|
|
fdb_info->offloaded = true;
|
|
call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev,
|
|
&fdb_info->info, NULL);
|
|
break;
|
|
|
|
case SWITCHDEV_FDB_DEL_TO_DEVICE:
|
|
fdb_info = &switchdev_work->fdb_info;
|
|
if (!fdb_info->added_by_user)
|
|
break;
|
|
|
|
err = dsa_port_fdb_del(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;
|
|
int err;
|
|
|
|
if (event == SWITCHDEV_PORT_ATTR_SET) {
|
|
err = switchdev_handle_port_attr_set(dev, ptr,
|
|
dsa_slave_dev_check,
|
|
dsa_slave_port_attr_set);
|
|
return notifier_from_errno(err);
|
|
}
|
|
|
|
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 int dsa_slave_switchdev_blocking_event(struct notifier_block *unused,
|
|
unsigned long event, void *ptr)
|
|
{
|
|
struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
|
|
int err;
|
|
|
|
switch (event) {
|
|
case SWITCHDEV_PORT_OBJ_ADD:
|
|
err = switchdev_handle_port_obj_add(dev, ptr,
|
|
dsa_slave_dev_check,
|
|
dsa_slave_port_obj_add);
|
|
return notifier_from_errno(err);
|
|
case SWITCHDEV_PORT_OBJ_DEL:
|
|
err = switchdev_handle_port_obj_del(dev, ptr,
|
|
dsa_slave_dev_check,
|
|
dsa_slave_port_obj_del);
|
|
return notifier_from_errno(err);
|
|
case SWITCHDEV_PORT_ATTR_SET:
|
|
err = switchdev_handle_port_attr_set(dev, ptr,
|
|
dsa_slave_dev_check,
|
|
dsa_slave_port_attr_set);
|
|
return notifier_from_errno(err);
|
|
}
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
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,
|
|
};
|
|
|
|
static struct notifier_block dsa_slave_switchdev_blocking_notifier = {
|
|
.notifier_call = dsa_slave_switchdev_blocking_event,
|
|
};
|
|
|
|
int dsa_slave_register_notifier(void)
|
|
{
|
|
struct notifier_block *nb;
|
|
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;
|
|
|
|
nb = &dsa_slave_switchdev_blocking_notifier;
|
|
err = register_switchdev_blocking_notifier(nb);
|
|
if (err)
|
|
goto err_switchdev_blocking_nb;
|
|
|
|
return 0;
|
|
|
|
err_switchdev_blocking_nb:
|
|
unregister_switchdev_notifier(&dsa_slave_switchdev_notifier);
|
|
err_switchdev_nb:
|
|
unregister_netdevice_notifier(&dsa_slave_nb);
|
|
return err;
|
|
}
|
|
|
|
void dsa_slave_unregister_notifier(void)
|
|
{
|
|
struct notifier_block *nb;
|
|
int err;
|
|
|
|
nb = &dsa_slave_switchdev_blocking_notifier;
|
|
err = unregister_switchdev_blocking_notifier(nb);
|
|
if (err)
|
|
pr_err("DSA: failed to unregister switchdev blocking notifier (%d)\n", 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);
|
|
}
|