diff options
Diffstat (limited to 'net/dsa')
| -rw-r--r-- | net/dsa/dsa.c | 206 | ||||
| -rw-r--r-- | net/dsa/dsa_priv.h | 8 | ||||
| -rw-r--r-- | net/dsa/slave.c | 394 | ||||
| -rw-r--r-- | net/dsa/tag_brcm.c | 15 | ||||
| -rw-r--r-- | net/dsa/tag_dsa.c | 12 | ||||
| -rw-r--r-- | net/dsa/tag_edsa.c | 12 | ||||
| -rw-r--r-- | net/dsa/tag_trailer.c | 14 |
7 files changed, 522 insertions, 139 deletions
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c index b445d492c..adb5325f4 100644 --- a/net/dsa/dsa.c +++ b/net/dsa/dsa.c @@ -22,6 +22,7 @@ #include <linux/of_platform.h> #include <linux/of_net.h> #include <linux/sysfs.h> +#include <linux/phy_fixed.h> #include "dsa_priv.h" char dsa_driver_version[] = "0.1"; @@ -176,6 +177,41 @@ __ATTRIBUTE_GROUPS(dsa_hwmon); #endif /* CONFIG_NET_DSA_HWMON */ /* basic switch operations **************************************************/ +static int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct net_device *master) +{ + struct dsa_chip_data *cd = ds->pd; + struct device_node *port_dn; + struct phy_device *phydev; + int ret, port, mode; + + for (port = 0; port < DSA_MAX_PORTS; port++) { + if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))) + continue; + + port_dn = cd->port_dn[port]; + if (of_phy_is_fixed_link(port_dn)) { + ret = of_phy_register_fixed_link(port_dn); + if (ret) { + netdev_err(master, + "failed to register fixed PHY\n"); + return ret; + } + phydev = of_phy_find_device(port_dn); + + mode = of_get_phy_mode(port_dn); + if (mode < 0) + mode = PHY_INTERFACE_MODE_NA; + phydev->interface = mode; + + genphy_config_init(phydev); + genphy_read_status(phydev); + if (ds->drv->adjust_link) + ds->drv->adjust_link(ds, port, phydev); + } + } + return 0; +} + static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent) { struct dsa_switch_driver *drv = ds->drv; @@ -270,7 +306,7 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent) if (ret < 0) goto out; - ds->slave_mii_bus = mdiobus_alloc(); + ds->slave_mii_bus = devm_mdiobus_alloc(parent); if (ds->slave_mii_bus == NULL) { ret = -ENOMEM; goto out; @@ -279,7 +315,7 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent) ret = mdiobus_register(ds->slave_mii_bus); if (ret < 0) - goto out_free; + goto out; /* @@ -297,6 +333,14 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent) } } + /* Perform configuration of the CPU and DSA ports */ + ret = dsa_cpu_dsa_setup(ds, dst->master_netdev); + if (ret < 0) { + netdev_err(dst->master_netdev, "[%d] : can't configure CPU and DSA ports\n", + index); + ret = 0; + } + #ifdef CONFIG_NET_DSA_HWMON /* If the switch provides a temperature sensor, * register with hardware monitoring subsystem. @@ -324,10 +368,7 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent) return ret; -out_free: - mdiobus_free(ds->slave_mii_bus); out: - kfree(ds); return ret; } @@ -357,7 +398,7 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index, /* * Allocate and initialise switch state. */ - ds = kzalloc(sizeof(*ds) + drv->priv_size, GFP_KERNEL); + ds = devm_kzalloc(parent, sizeof(*ds) + drv->priv_size, GFP_KERNEL); if (ds == NULL) return ERR_PTR(-ENOMEM); @@ -377,10 +418,47 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index, static void dsa_switch_destroy(struct dsa_switch *ds) { + struct device_node *port_dn; + struct phy_device *phydev; + struct dsa_chip_data *cd = ds->pd; + int port; + #ifdef CONFIG_NET_DSA_HWMON if (ds->hwmon_dev) hwmon_device_unregister(ds->hwmon_dev); #endif + + /* Disable configuration of the CPU and DSA ports */ + for (port = 0; port < DSA_MAX_PORTS; port++) { + if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))) + continue; + + port_dn = cd->port_dn[port]; + if (of_phy_is_fixed_link(port_dn)) { + phydev = of_phy_find_device(port_dn); + if (phydev) { + int addr = phydev->addr; + + phy_device_free(phydev); + of_node_put(port_dn); + fixed_phy_del(addr); + } + } + } + + /* Destroy network devices for physical switch ports. */ + for (port = 0; port < DSA_MAX_PORTS; port++) { + if (!(ds->phys_port_mask & (1 << port))) + continue; + + if (!ds->ports[port]) + continue; + + unregister_netdev(ds->ports[port]); + free_netdev(ds->ports[port]); + } + + mdiobus_unregister(ds->slave_mii_bus); } #ifdef CONFIG_PM_SLEEP @@ -554,6 +632,31 @@ static int dsa_of_setup_routing_table(struct dsa_platform_data *pd, return 0; } +static int dsa_of_probe_links(struct dsa_platform_data *pd, + struct dsa_chip_data *cd, + int chip_index, int port_index, + struct device_node *port, + const char *port_name) +{ + struct device_node *link; + int link_index; + int ret; + + for (link_index = 0;; link_index++) { + link = of_parse_phandle(port, "link", link_index); + if (!link) + break; + + if (!strcmp(port_name, "dsa") && pd->nr_chips > 1) { + ret = dsa_of_setup_routing_table(pd, cd, chip_index, + port_index, link); + if (ret) + return ret; + } + } + return 0; +} + static void dsa_of_free_platform_data(struct dsa_platform_data *pd) { int i; @@ -566,6 +669,10 @@ static void dsa_of_free_platform_data(struct dsa_platform_data *pd) port_index++; } kfree(pd->chip[i].rtable); + + /* Drop our reference to the MDIO bus device */ + if (pd->chip[i].host_dev) + put_device(pd->chip[i].host_dev); } kfree(pd->chip); } @@ -573,8 +680,8 @@ static void dsa_of_free_platform_data(struct dsa_platform_data *pd) static int dsa_of_probe(struct device *dev) { struct device_node *np = dev->of_node; - struct device_node *child, *mdio, *ethernet, *port, *link; - struct mii_bus *mdio_bus; + struct device_node *child, *mdio, *ethernet, *port; + struct mii_bus *mdio_bus, *mdio_bus_switch; struct net_device *ethernet_dev; struct dsa_platform_data *pd; struct dsa_chip_data *cd; @@ -593,16 +700,22 @@ static int dsa_of_probe(struct device *dev) return -EPROBE_DEFER; ethernet = of_parse_phandle(np, "dsa,ethernet", 0); - if (!ethernet) - return -EINVAL; + if (!ethernet) { + ret = -EINVAL; + goto out_put_mdio; + } ethernet_dev = of_find_net_device_by_node(ethernet); - if (!ethernet_dev) - return -EPROBE_DEFER; + if (!ethernet_dev) { + ret = -EPROBE_DEFER; + goto out_put_mdio; + } pd = kzalloc(sizeof(*pd), GFP_KERNEL); - if (!pd) - return -ENOMEM; + if (!pd) { + ret = -ENOMEM; + goto out_put_ethernet; + } dev->platform_data = pd; pd->of_netdev = ethernet_dev; @@ -623,7 +736,9 @@ static int dsa_of_probe(struct device *dev) cd = &pd->chip[chip_index]; cd->of_node = child; - cd->host_dev = &mdio_bus->dev; + + /* When assigning the host device, increment its refcount */ + cd->host_dev = get_device(&mdio_bus->dev); sw_addr = of_get_property(child, "reg", NULL); if (!sw_addr) @@ -636,6 +751,22 @@ static int dsa_of_probe(struct device *dev) if (!of_property_read_u32(child, "eeprom-length", &eeprom_len)) cd->eeprom_len = eeprom_len; + mdio = of_parse_phandle(child, "mii-bus", 0); + if (mdio) { + mdio_bus_switch = of_mdio_find_bus(mdio); + if (!mdio_bus_switch) { + ret = -EPROBE_DEFER; + goto out_free_chip; + } + + /* Drop the mdio_bus device ref, replacing the host + * device with the mdio_bus_switch device, keeping + * the refcount from of_mdio_find_bus() above. + */ + put_device(cd->host_dev); + cd->host_dev = &mdio_bus_switch->dev; + } + for_each_available_child_of_node(child, port) { port_reg = of_get_property(port, "reg", NULL); if (!port_reg) @@ -658,19 +789,18 @@ static int dsa_of_probe(struct device *dev) goto out_free_chip; } - link = of_parse_phandle(port, "link", 0); - - if (!strcmp(port_name, "dsa") && link && - pd->nr_chips > 1) { - ret = dsa_of_setup_routing_table(pd, cd, - chip_index, port_index, link); - if (ret) - goto out_free_chip; - } + ret = dsa_of_probe_links(pd, cd, chip_index, + port_index, port, port_name); + if (ret) + goto out_free_chip; } } + /* The individual chips hold their own refcount on the mdio bus, + * so drop ours */ + put_device(&mdio_bus->dev); + return 0; out_free_chip: @@ -678,6 +808,10 @@ out_free_chip: out_free: kfree(pd); dev->platform_data = NULL; +out_put_ethernet: + put_device(ðernet_dev->dev); +out_put_mdio: + put_device(&mdio_bus->dev); return ret; } @@ -689,6 +823,7 @@ static void dsa_of_remove(struct device *dev) return; dsa_of_free_platform_data(pd); + put_device(&pd->of_netdev->dev); kfree(pd); } #else @@ -702,10 +837,11 @@ static inline void dsa_of_remove(struct device *dev) } #endif -static void dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev, - struct device *parent, struct dsa_platform_data *pd) +static int dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev, + struct device *parent, struct dsa_platform_data *pd) { int i; + unsigned configured = 0; dst->pd = pd; dst->master_netdev = dev; @@ -725,9 +861,17 @@ static void dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev, dst->ds[i] = ds; if (ds->drv->poll_link != NULL) dst->link_poll_needed = 1; + + ++configured; } /* + * If no switch was found, exit cleanly + */ + if (!configured) + return -EPROBE_DEFER; + + /* * If we use a tagging format that doesn't have an ethertype * field, make sure that all packets from this point on get * sent to the tag format's receive function. @@ -743,6 +887,8 @@ static void dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev, dst->link_poll_timer.expires = round_jiffies(jiffies + HZ); add_timer(&dst->link_poll_timer); } + + return 0; } static int dsa_probe(struct platform_device *pdev) @@ -783,7 +929,7 @@ static int dsa_probe(struct platform_device *pdev) goto out; } - dst = kzalloc(sizeof(*dst), GFP_KERNEL); + dst = devm_kzalloc(&pdev->dev, sizeof(*dst), GFP_KERNEL); if (dst == NULL) { dev_put(dev); ret = -ENOMEM; @@ -792,7 +938,9 @@ static int dsa_probe(struct platform_device *pdev) platform_set_drvdata(pdev, dst); - dsa_setup_dst(dst, dev, &pdev->dev, pd); + ret = dsa_setup_dst(dst, dev, &pdev->dev, pd); + if (ret) + goto out; return 0; @@ -814,7 +962,7 @@ static void dsa_remove_dst(struct dsa_switch_tree *dst) for (i = 0; i < dst->pd->nr_chips; i++) { struct dsa_switch *ds = dst->ds[i]; - if (ds != NULL) + if (ds) dsa_switch_destroy(ds); } } diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h index d5f1f9b86..311796c80 100644 --- a/net/dsa/dsa_priv.h +++ b/net/dsa/dsa_priv.h @@ -13,9 +13,10 @@ #include <linux/phy.h> #include <linux/netdevice.h> +#include <linux/netpoll.h> struct dsa_device_ops { - netdev_tx_t (*xmit)(struct sk_buff *skb, struct net_device *dev); + struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev); int (*rcv)(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev); }; @@ -26,7 +27,7 @@ struct dsa_slave_priv { * switch port. */ struct net_device *dev; - netdev_tx_t (*xmit)(struct sk_buff *skb, + struct sk_buff * (*xmit)(struct sk_buff *skb, struct net_device *dev); /* @@ -47,6 +48,9 @@ struct dsa_slave_priv { int old_duplex; struct net_device *bridge_dev; +#ifdef CONFIG_NET_POLL_CONTROLLER + struct netpoll *netpoll; +#endif }; /* dsa.c */ diff --git a/net/dsa/slave.c b/net/dsa/slave.c index 25dbb91e1..7d91f4612 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -18,6 +18,7 @@ #include <net/rtnetlink.h> #include <net/switchdev.h> #include <linux/if_bridge.h> +#include <linux/netpoll.h> #include "dsa_priv.h" /* slave mii_bus handling ***************************************************/ @@ -199,103 +200,212 @@ out: return 0; } -static int dsa_slave_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], - struct net_device *dev, - const unsigned char *addr, u16 vid, u16 nlm_flags) +static int dsa_bridge_check_vlan_range(struct dsa_switch *ds, + const struct net_device *bridge, + u16 vid_begin, u16 vid_end) { + struct dsa_slave_priv *p; + struct net_device *dev, *vlan_br; + DECLARE_BITMAP(members, DSA_MAX_PORTS); + DECLARE_BITMAP(untagged, DSA_MAX_PORTS); + u16 vid; + int member, err; + + if (!ds->drv->vlan_getnext || !vid_begin) + return -EOPNOTSUPP; + + vid = vid_begin - 1; + + do { + err = ds->drv->vlan_getnext(ds, &vid, members, untagged); + if (err) + break; + + if (vid > vid_end) + break; + + member = find_first_bit(members, DSA_MAX_PORTS); + if (member == DSA_MAX_PORTS) + continue; + + dev = ds->ports[member]; + p = netdev_priv(dev); + vlan_br = p->bridge_dev; + if (vlan_br == bridge) + continue; + + netdev_dbg(vlan_br, "hardware VLAN %d already in use\n", vid); + return -EOPNOTSUPP; + } while (vid < vid_end); + + return err == -ENOENT ? 0 : err; +} + +static int dsa_slave_port_vlan_add(struct net_device *dev, + struct switchdev_obj *obj) +{ + struct switchdev_obj_vlan *vlan = &obj->u.vlan; struct dsa_slave_priv *p = netdev_priv(dev); struct dsa_switch *ds = p->parent; - int ret = -EOPNOTSUPP; + u16 vid; + int err; - if (ds->drv->fdb_add) - ret = ds->drv->fdb_add(ds, p->port, addr, vid); + switch (obj->trans) { + case SWITCHDEV_TRANS_PREPARE: + if (!ds->drv->port_vlan_add || !ds->drv->port_pvid_set) + return -EOPNOTSUPP; - return ret; + /* If the requested port doesn't belong to the same bridge as + * the VLAN members, fallback to software VLAN (hopefully). + */ + err = dsa_bridge_check_vlan_range(ds, p->bridge_dev, + vlan->vid_begin, + vlan->vid_end); + if (err) + return err; + break; + case SWITCHDEV_TRANS_COMMIT: + for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) { + err = ds->drv->port_vlan_add(ds, p->port, vid, + vlan->flags & + BRIDGE_VLAN_INFO_UNTAGGED); + if (!err && vlan->flags & BRIDGE_VLAN_INFO_PVID) + err = ds->drv->port_pvid_set(ds, p->port, vid); + if (err) + return err; + } + break; + default: + return -EOPNOTSUPP; + } + + return 0; } -static int dsa_slave_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], - struct net_device *dev, - const unsigned char *addr, u16 vid) +static int dsa_slave_port_vlan_del(struct net_device *dev, + struct switchdev_obj *obj) { + struct switchdev_obj_vlan *vlan = &obj->u.vlan; struct dsa_slave_priv *p = netdev_priv(dev); struct dsa_switch *ds = p->parent; - int ret = -EOPNOTSUPP; + u16 vid; + int err; - if (ds->drv->fdb_del) - ret = ds->drv->fdb_del(ds, p->port, addr, vid); + if (!ds->drv->port_vlan_del) + return -EOPNOTSUPP; - return ret; + for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) { + err = ds->drv->port_vlan_del(ds, p->port, vid); + if (err) + return err; + } + + return 0; } -static int dsa_slave_fill_info(struct net_device *dev, struct sk_buff *skb, - const unsigned char *addr, u16 vid, - bool is_static, - u32 portid, u32 seq, int type, - unsigned int flags) +static int dsa_slave_port_vlan_dump(struct net_device *dev, + struct switchdev_obj *obj) { - struct nlmsghdr *nlh; - struct ndmsg *ndm; + struct switchdev_obj_vlan *vlan = &obj->u.vlan; + struct dsa_slave_priv *p = netdev_priv(dev); + struct dsa_switch *ds = p->parent; + DECLARE_BITMAP(members, DSA_MAX_PORTS); + DECLARE_BITMAP(untagged, DSA_MAX_PORTS); + u16 pvid, vid = 0; + int err; - nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags); - if (!nlh) - return -EMSGSIZE; + if (!ds->drv->vlan_getnext || !ds->drv->port_pvid_get) + return -EOPNOTSUPP; - ndm = nlmsg_data(nlh); - ndm->ndm_family = AF_BRIDGE; - ndm->ndm_pad1 = 0; - ndm->ndm_pad2 = 0; - ndm->ndm_flags = NTF_EXT_LEARNED; - ndm->ndm_type = 0; - ndm->ndm_ifindex = dev->ifindex; - ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE; + err = ds->drv->port_pvid_get(ds, p->port, &pvid); + if (err) + return err; - if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) - goto nla_put_failure; + for (;;) { + err = ds->drv->vlan_getnext(ds, &vid, members, untagged); + if (err) + break; - if (vid && nla_put_u16(skb, NDA_VLAN, vid)) - goto nla_put_failure; + if (!test_bit(p->port, members)) + continue; - nlmsg_end(skb, nlh); - return 0; + memset(vlan, 0, sizeof(*vlan)); + vlan->vid_begin = vlan->vid_end = vid; + + if (vid == pvid) + vlan->flags |= BRIDGE_VLAN_INFO_PVID; + + if (test_bit(p->port, untagged)) + vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED; + + err = obj->cb(dev, obj); + if (err) + break; + } + + return err == -ENOENT ? 0 : err; +} -nla_put_failure: - nlmsg_cancel(skb, nlh); - return -EMSGSIZE; +static int dsa_slave_port_fdb_add(struct net_device *dev, + struct switchdev_obj *obj) +{ + struct switchdev_obj_fdb *fdb = &obj->u.fdb; + struct dsa_slave_priv *p = netdev_priv(dev); + struct dsa_switch *ds = p->parent; + int ret = -EOPNOTSUPP; + + if (obj->trans == SWITCHDEV_TRANS_PREPARE) + ret = ds->drv->port_fdb_add ? 0 : -EOPNOTSUPP; + else if (obj->trans == SWITCHDEV_TRANS_COMMIT) + ret = ds->drv->port_fdb_add(ds, p->port, fdb->addr, fdb->vid); + + return ret; } -/* Dump information about entries, in response to GETNEIGH */ -static int dsa_slave_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, - struct net_device *dev, - struct net_device *filter_dev, int idx) +static int dsa_slave_port_fdb_del(struct net_device *dev, + struct switchdev_obj *obj) +{ + struct switchdev_obj_fdb *fdb = &obj->u.fdb; + struct dsa_slave_priv *p = netdev_priv(dev); + struct dsa_switch *ds = p->parent; + int ret = -EOPNOTSUPP; + + if (ds->drv->port_fdb_del) + ret = ds->drv->port_fdb_del(ds, p->port, fdb->addr, fdb->vid); + + return ret; +} + +static int dsa_slave_port_fdb_dump(struct net_device *dev, + struct switchdev_obj *obj) { struct dsa_slave_priv *p = netdev_priv(dev); struct dsa_switch *ds = p->parent; unsigned char addr[ETH_ALEN] = { 0 }; + u16 vid = 0; int ret; - if (!ds->drv->fdb_getnext) + if (!ds->drv->port_fdb_getnext) return -EOPNOTSUPP; - for (; ; idx++) { + for (;;) { bool is_static; - ret = ds->drv->fdb_getnext(ds, p->port, addr, &is_static); + ret = ds->drv->port_fdb_getnext(ds, p->port, addr, &vid, + &is_static); if (ret < 0) break; - if (idx < cb->args[0]) - continue; + obj->u.fdb.addr = addr; + obj->u.fdb.vid = vid; + obj->u.fdb.ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE; - ret = dsa_slave_fill_info(dev, skb, addr, 0, - is_static, - NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, - RTM_NEWNEIGH, NLM_F_MULTI); + ret = obj->cb(dev, obj); if (ret < 0) break; } - return idx; + return ret == -ENOENT ? 0 : ret; } static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) @@ -368,6 +478,71 @@ static int dsa_slave_port_attr_set(struct net_device *dev, return ret; } +static int dsa_slave_port_obj_add(struct net_device *dev, + struct switchdev_obj *obj) +{ + int err; + + /* For the prepare phase, ensure the full set of changes is feasable in + * one go in order to signal a failure properly. If an operation is not + * supported, return -EOPNOTSUPP. + */ + + switch (obj->id) { + case SWITCHDEV_OBJ_PORT_FDB: + err = dsa_slave_port_fdb_add(dev, obj); + break; + case SWITCHDEV_OBJ_PORT_VLAN: + err = dsa_slave_port_vlan_add(dev, obj); + break; + default: + err = -EOPNOTSUPP; + break; + } + + return err; +} + +static int dsa_slave_port_obj_del(struct net_device *dev, + struct switchdev_obj *obj) +{ + int err; + + switch (obj->id) { + case SWITCHDEV_OBJ_PORT_FDB: + err = dsa_slave_port_fdb_del(dev, obj); + break; + case SWITCHDEV_OBJ_PORT_VLAN: + err = dsa_slave_port_vlan_del(dev, obj); + break; + default: + err = -EOPNOTSUPP; + break; + } + + return err; +} + +static int dsa_slave_port_obj_dump(struct net_device *dev, + struct switchdev_obj *obj) +{ + int err; + + switch (obj->id) { + case SWITCHDEV_OBJ_PORT_FDB: + err = dsa_slave_port_fdb_dump(dev, obj); + break; + case SWITCHDEV_OBJ_PORT_VLAN: + err = dsa_slave_port_vlan_dump(dev, obj); + break; + default: + err = -EOPNOTSUPP; + break; + } + + return err; +} + static int dsa_slave_bridge_port_join(struct net_device *dev, struct net_device *br) { @@ -423,24 +598,53 @@ static int dsa_slave_port_attr_get(struct net_device *dev, return 0; } -static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev) +static inline netdev_tx_t dsa_netpoll_send_skb(struct dsa_slave_priv *p, + struct sk_buff *skb) { - struct dsa_slave_priv *p = netdev_priv(dev); - - return p->xmit(skb, dev); +#ifdef CONFIG_NET_POLL_CONTROLLER + if (p->netpoll) + netpoll_send_skb(p->netpoll, skb); +#else + BUG(); +#endif + return NETDEV_TX_OK; } -static netdev_tx_t dsa_slave_notag_xmit(struct sk_buff *skb, - struct net_device *dev) +static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev) { struct dsa_slave_priv *p = netdev_priv(dev); + struct sk_buff *nskb; + + dev->stats.tx_packets++; + dev->stats.tx_bytes += skb->len; + + /* Transmit function may have to reallocate the original SKB */ + nskb = p->xmit(skb, dev); + if (!nskb) + return NETDEV_TX_OK; - skb->dev = p->parent->dst->master_netdev; - dev_queue_xmit(skb); + /* SKB for netpoll still need to be mangled with the protocol-specific + * tag to be successfully transmitted + */ + if (unlikely(netpoll_tx_running(dev))) + return dsa_netpoll_send_skb(p, nskb); + + /* Queue the SKB for transmission on the parent interface, but + * do not modify its EtherType + */ + nskb->dev = p->parent->dst->master_netdev; + dev_queue_xmit(nskb); return NETDEV_TX_OK; } +static struct sk_buff *dsa_slave_notag_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + /* Just return the original SKB */ + return skb; +} + /* ethtool operations *******************************************************/ static int @@ -670,6 +874,49 @@ static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e) return ret; } +#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 dsa_switch *ds = p->parent; + struct net_device *master = ds->dst->master_netdev; + 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 const struct ethtool_ops dsa_slave_ethtool_ops = { .get_settings = dsa_slave_get_settings, .set_settings = dsa_slave_set_settings, @@ -697,16 +944,27 @@ static const struct net_device_ops dsa_slave_netdev_ops = { .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_slave_fdb_add, - .ndo_fdb_del = dsa_slave_fdb_del, - .ndo_fdb_dump = dsa_slave_fdb_dump, + .ndo_fdb_add = switchdev_port_fdb_add, + .ndo_fdb_del = switchdev_port_fdb_del, + .ndo_fdb_dump = switchdev_port_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_bridge_getlink = switchdev_port_bridge_getlink, + .ndo_bridge_setlink = switchdev_port_bridge_setlink, + .ndo_bridge_dellink = switchdev_port_bridge_dellink, }; 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, + .switchdev_port_obj_dump = dsa_slave_port_obj_dump, }; static void dsa_slave_adjust_link(struct net_device *dev) @@ -894,7 +1152,7 @@ int dsa_slave_create(struct dsa_switch *ds, struct device *parent, slave_dev->features = master->vlan_features; slave_dev->ethtool_ops = &dsa_slave_ethtool_ops; eth_hw_addr_inherit(slave_dev, master); - slave_dev->tx_queue_len = 0; + slave_dev->priv_flags |= IFF_NO_QUEUE; slave_dev->netdev_ops = &dsa_slave_netdev_ops; slave_dev->switchdev_ops = &dsa_slave_switchdev_ops; diff --git a/net/dsa/tag_brcm.c b/net/dsa/tag_brcm.c index 83d3572cd..e2aadb731 100644 --- a/net/dsa/tag_brcm.c +++ b/net/dsa/tag_brcm.c @@ -58,14 +58,11 @@ #define BRCM_EG_TC_MASK 0x7 #define BRCM_EG_PID_MASK 0x1f -static netdev_tx_t brcm_tag_xmit(struct sk_buff *skb, struct net_device *dev) +static struct sk_buff *brcm_tag_xmit(struct sk_buff *skb, struct net_device *dev) { struct dsa_slave_priv *p = netdev_priv(dev); u8 *brcm_tag; - dev->stats.tx_packets++; - dev->stats.tx_bytes += skb->len; - if (skb_cow_head(skb, BRCM_TAG_LEN) < 0) goto out_free; @@ -87,17 +84,11 @@ static netdev_tx_t brcm_tag_xmit(struct sk_buff *skb, struct net_device *dev) brcm_tag[2] = BRCM_IG_DSTMAP2_MASK; brcm_tag[3] = (1 << p->port) & BRCM_IG_DSTMAP1_MASK; - /* Queue the SKB for transmission on the parent interface, but - * do not modify its EtherType - */ - skb->dev = p->parent->dst->master_netdev; - dev_queue_xmit(skb); - - return NETDEV_TX_OK; + return skb; out_free: kfree_skb(skb); - return NETDEV_TX_OK; + return NULL; } static int brcm_tag_rcv(struct sk_buff *skb, struct net_device *dev, diff --git a/net/dsa/tag_dsa.c b/net/dsa/tag_dsa.c index 2dab27063..aa780e4ac 100644 --- a/net/dsa/tag_dsa.c +++ b/net/dsa/tag_dsa.c @@ -15,14 +15,11 @@ #define DSA_HLEN 4 -static netdev_tx_t dsa_xmit(struct sk_buff *skb, struct net_device *dev) +static struct sk_buff *dsa_xmit(struct sk_buff *skb, struct net_device *dev) { struct dsa_slave_priv *p = netdev_priv(dev); u8 *dsa_header; - dev->stats.tx_packets++; - dev->stats.tx_bytes += skb->len; - /* * Convert the outermost 802.1q tag to a DSA tag for tagged * packets, or insert a DSA tag between the addresses and @@ -63,14 +60,11 @@ static netdev_tx_t dsa_xmit(struct sk_buff *skb, struct net_device *dev) dsa_header[3] = 0x00; } - skb->dev = p->parent->dst->master_netdev; - dev_queue_xmit(skb); - - return NETDEV_TX_OK; + return skb; out_free: kfree_skb(skb); - return NETDEV_TX_OK; + return NULL; } static int dsa_rcv(struct sk_buff *skb, struct net_device *dev, diff --git a/net/dsa/tag_edsa.c b/net/dsa/tag_edsa.c index 9aeda596f..2288c8098 100644 --- a/net/dsa/tag_edsa.c +++ b/net/dsa/tag_edsa.c @@ -16,14 +16,11 @@ #define DSA_HLEN 4 #define EDSA_HLEN 8 -static netdev_tx_t edsa_xmit(struct sk_buff *skb, struct net_device *dev) +static struct sk_buff *edsa_xmit(struct sk_buff *skb, struct net_device *dev) { struct dsa_slave_priv *p = netdev_priv(dev); u8 *edsa_header; - dev->stats.tx_packets++; - dev->stats.tx_bytes += skb->len; - /* * Convert the outermost 802.1q tag to a DSA tag and prepend * a DSA ethertype field is the packet is tagged, or insert @@ -76,14 +73,11 @@ static netdev_tx_t edsa_xmit(struct sk_buff *skb, struct net_device *dev) edsa_header[7] = 0x00; } - skb->dev = p->parent->dst->master_netdev; - dev_queue_xmit(skb); - - return NETDEV_TX_OK; + return skb; out_free: kfree_skb(skb); - return NETDEV_TX_OK; + return NULL; } static int edsa_rcv(struct sk_buff *skb, struct net_device *dev, diff --git a/net/dsa/tag_trailer.c b/net/dsa/tag_trailer.c index e268f9db8..b6ca0890d 100644 --- a/net/dsa/tag_trailer.c +++ b/net/dsa/tag_trailer.c @@ -13,16 +13,13 @@ #include <linux/slab.h> #include "dsa_priv.h" -static netdev_tx_t trailer_xmit(struct sk_buff *skb, struct net_device *dev) +static struct sk_buff *trailer_xmit(struct sk_buff *skb, struct net_device *dev) { struct dsa_slave_priv *p = netdev_priv(dev); struct sk_buff *nskb; int padlen; u8 *trailer; - dev->stats.tx_packets++; - dev->stats.tx_bytes += skb->len; - /* * We have to make sure that the trailer ends up as the very * last 4 bytes of the packet. This means that we have to pad @@ -36,7 +33,7 @@ static netdev_tx_t trailer_xmit(struct sk_buff *skb, struct net_device *dev) nskb = alloc_skb(NET_IP_ALIGN + skb->len + padlen + 4, GFP_ATOMIC); if (nskb == NULL) { kfree_skb(skb); - return NETDEV_TX_OK; + return NULL; } skb_reserve(nskb, NET_IP_ALIGN); @@ -57,10 +54,7 @@ static netdev_tx_t trailer_xmit(struct sk_buff *skb, struct net_device *dev) trailer[2] = 0x10; trailer[3] = 0x00; - nskb->dev = p->parent->dst->master_netdev; - dev_queue_xmit(nskb); - - return NETDEV_TX_OK; + return nskb; } static int trailer_rcv(struct sk_buff *skb, struct net_device *dev, @@ -84,7 +78,7 @@ static int trailer_rcv(struct sk_buff *skb, struct net_device *dev, trailer = skb_tail_pointer(skb) - 4; if (trailer[0] != 0x80 || (trailer[1] & 0xf8) != 0x00 || - (trailer[3] & 0xef) != 0x00 || trailer[3] != 0x00) + (trailer[2] & 0xef) != 0x00 || trailer[3] != 0x00) goto out_drop; source_port = trailer[1] & 7; |