ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/target/linux/generic/files/drivers/net/phy/swconfig.c b/target/linux/generic/files/drivers/net/phy/swconfig.c
new file mode 100644
index 0000000..a734e57
--- /dev/null
+++ b/target/linux/generic/files/drivers/net/phy/swconfig.c
@@ -0,0 +1,1242 @@
+/*
+ * swconfig.c: Switch configuration API
+ *
+ * Copyright (C) 2008 Felix Fietkau <nbd@nbd.name>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/if.h>
+#include <linux/if_ether.h>
+#include <linux/capability.h>
+#include <linux/skbuff.h>
+#include <linux/switch.h>
+#include <linux/of.h>
+#include <linux/version.h>
+#include <uapi/linux/mii.h>
+
+#define SWCONFIG_DEVNAME "switch%d"
+
+#include "swconfig_leds.c"
+
+MODULE_AUTHOR("Felix Fietkau <nbd@nbd.name>");
+MODULE_LICENSE("GPL");
+
+static int swdev_id;
+static struct list_head swdevs;
+static DEFINE_MUTEX(swdevs_lock);
+struct swconfig_callback;
+
+struct swconfig_callback {
+ struct sk_buff *msg;
+ struct genlmsghdr *hdr;
+ struct genl_info *info;
+ int cmd;
+
+ /* callback for filling in the message data */
+ int (*fill)(struct swconfig_callback *cb, void *arg);
+
+ /* callback for closing the message before sending it */
+ int (*close)(struct swconfig_callback *cb, void *arg);
+
+ struct nlattr *nest[4];
+ int args[4];
+};
+
+/* defaults */
+
+static int
+swconfig_get_vlan_ports(struct switch_dev *dev, const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ int ret;
+ if (val->port_vlan >= dev->vlans)
+ return -EINVAL;
+
+ if (!dev->ops->get_vlan_ports)
+ return -EOPNOTSUPP;
+
+ ret = dev->ops->get_vlan_ports(dev, val);
+ return ret;
+}
+
+static int
+swconfig_set_vlan_ports(struct switch_dev *dev, const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ struct switch_port *ports = val->value.ports;
+ const struct switch_dev_ops *ops = dev->ops;
+ int i;
+
+ if (val->port_vlan >= dev->vlans)
+ return -EINVAL;
+
+ /* validate ports */
+ if (val->len > dev->ports)
+ return -EINVAL;
+
+ if (!ops->set_vlan_ports)
+ return -EOPNOTSUPP;
+
+ for (i = 0; i < val->len; i++) {
+ if (ports[i].id >= dev->ports)
+ return -EINVAL;
+
+ if (ops->set_port_pvid &&
+ !(ports[i].flags & (1 << SWITCH_PORT_FLAG_TAGGED)))
+ ops->set_port_pvid(dev, ports[i].id, val->port_vlan);
+ }
+
+ return ops->set_vlan_ports(dev, val);
+}
+
+static int
+swconfig_set_pvid(struct switch_dev *dev, const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ if (val->port_vlan >= dev->ports)
+ return -EINVAL;
+
+ if (!dev->ops->set_port_pvid)
+ return -EOPNOTSUPP;
+
+ return dev->ops->set_port_pvid(dev, val->port_vlan, val->value.i);
+}
+
+static int
+swconfig_get_pvid(struct switch_dev *dev, const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ if (val->port_vlan >= dev->ports)
+ return -EINVAL;
+
+ if (!dev->ops->get_port_pvid)
+ return -EOPNOTSUPP;
+
+ return dev->ops->get_port_pvid(dev, val->port_vlan, &val->value.i);
+}
+
+static int
+swconfig_set_link(struct switch_dev *dev, const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ if (!dev->ops->set_port_link)
+ return -EOPNOTSUPP;
+
+ return dev->ops->set_port_link(dev, val->port_vlan, val->value.link);
+}
+
+static int
+swconfig_get_link(struct switch_dev *dev, const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ struct switch_port_link *link = val->value.link;
+
+ if (val->port_vlan >= dev->ports)
+ return -EINVAL;
+
+ if (!dev->ops->get_port_link)
+ return -EOPNOTSUPP;
+
+ memset(link, 0, sizeof(*link));
+ return dev->ops->get_port_link(dev, val->port_vlan, link);
+}
+
+static int
+swconfig_apply_config(struct switch_dev *dev, const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ /* don't complain if not supported by the switch driver */
+ if (!dev->ops->apply_config)
+ return 0;
+
+ return dev->ops->apply_config(dev);
+}
+
+static int
+swconfig_reset_switch(struct switch_dev *dev, const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ /* don't complain if not supported by the switch driver */
+ if (!dev->ops->reset_switch)
+ return 0;
+
+ return dev->ops->reset_switch(dev);
+}
+
+enum global_defaults {
+ GLOBAL_APPLY,
+ GLOBAL_RESET,
+};
+
+enum vlan_defaults {
+ VLAN_PORTS,
+};
+
+enum port_defaults {
+ PORT_PVID,
+ PORT_LINK,
+};
+
+static struct switch_attr default_global[] = {
+ [GLOBAL_APPLY] = {
+ .type = SWITCH_TYPE_NOVAL,
+ .name = "apply",
+ .description = "Activate changes in the hardware",
+ .set = swconfig_apply_config,
+ },
+ [GLOBAL_RESET] = {
+ .type = SWITCH_TYPE_NOVAL,
+ .name = "reset",
+ .description = "Reset the switch",
+ .set = swconfig_reset_switch,
+ }
+};
+
+static struct switch_attr default_port[] = {
+ [PORT_PVID] = {
+ .type = SWITCH_TYPE_INT,
+ .name = "pvid",
+ .description = "Primary VLAN ID",
+ .set = swconfig_set_pvid,
+ .get = swconfig_get_pvid,
+ },
+ [PORT_LINK] = {
+ .type = SWITCH_TYPE_LINK,
+ .name = "link",
+ .description = "Get port link information",
+ .set = swconfig_set_link,
+ .get = swconfig_get_link,
+ }
+};
+
+static struct switch_attr default_vlan[] = {
+ [VLAN_PORTS] = {
+ .type = SWITCH_TYPE_PORTS,
+ .name = "ports",
+ .description = "VLAN port mapping",
+ .set = swconfig_set_vlan_ports,
+ .get = swconfig_get_vlan_ports,
+ },
+};
+
+static const struct switch_attr *
+swconfig_find_attr_by_name(const struct switch_attrlist *alist,
+ const char *name)
+{
+ int i;
+
+ for (i = 0; i < alist->n_attr; i++)
+ if (strcmp(name, alist->attr[i].name) == 0)
+ return &alist->attr[i];
+
+ return NULL;
+}
+
+static void swconfig_defaults_init(struct switch_dev *dev)
+{
+ const struct switch_dev_ops *ops = dev->ops;
+
+ dev->def_global = 0;
+ dev->def_vlan = 0;
+ dev->def_port = 0;
+
+ if (ops->get_vlan_ports || ops->set_vlan_ports)
+ set_bit(VLAN_PORTS, &dev->def_vlan);
+
+ if (ops->get_port_pvid || ops->set_port_pvid)
+ set_bit(PORT_PVID, &dev->def_port);
+
+ if (ops->get_port_link &&
+ !swconfig_find_attr_by_name(&ops->attr_port, "link"))
+ set_bit(PORT_LINK, &dev->def_port);
+
+ /* always present, can be no-op */
+ set_bit(GLOBAL_APPLY, &dev->def_global);
+ set_bit(GLOBAL_RESET, &dev->def_global);
+}
+
+
+static struct genl_family switch_fam;
+
+static const struct nla_policy switch_policy[SWITCH_ATTR_MAX+1] = {
+ [SWITCH_ATTR_ID] = { .type = NLA_U32 },
+ [SWITCH_ATTR_OP_ID] = { .type = NLA_U32 },
+ [SWITCH_ATTR_OP_PORT] = { .type = NLA_U32 },
+ [SWITCH_ATTR_OP_VLAN] = { .type = NLA_U32 },
+ [SWITCH_ATTR_OP_VALUE_INT] = { .type = NLA_U32 },
+ [SWITCH_ATTR_OP_VALUE_STR] = { .type = NLA_NUL_STRING },
+ [SWITCH_ATTR_OP_VALUE_PORTS] = { .type = NLA_NESTED },
+ [SWITCH_ATTR_TYPE] = { .type = NLA_U32 },
+};
+
+static const struct nla_policy port_policy[SWITCH_PORT_ATTR_MAX+1] = {
+ [SWITCH_PORT_ID] = { .type = NLA_U32 },
+ [SWITCH_PORT_FLAG_TAGGED] = { .type = NLA_FLAG },
+};
+
+static struct nla_policy link_policy[SWITCH_LINK_ATTR_MAX] = {
+ [SWITCH_LINK_FLAG_DUPLEX] = { .type = NLA_FLAG },
+ [SWITCH_LINK_FLAG_ANEG] = { .type = NLA_FLAG },
+ [SWITCH_LINK_SPEED] = { .type = NLA_U32 },
+};
+
+static inline void
+swconfig_lock(void)
+{
+ mutex_lock(&swdevs_lock);
+}
+
+static inline void
+swconfig_unlock(void)
+{
+ mutex_unlock(&swdevs_lock);
+}
+
+static struct switch_dev *
+swconfig_get_dev(struct genl_info *info)
+{
+ struct switch_dev *dev = NULL;
+ struct switch_dev *p;
+ int id;
+
+ if (!info->attrs[SWITCH_ATTR_ID])
+ goto done;
+
+ id = nla_get_u32(info->attrs[SWITCH_ATTR_ID]);
+ swconfig_lock();
+ list_for_each_entry(p, &swdevs, dev_list) {
+ if (id != p->id)
+ continue;
+
+ dev = p;
+ break;
+ }
+ if (dev)
+ mutex_lock(&dev->sw_mutex);
+ else
+ pr_debug("device %d not found\n", id);
+ swconfig_unlock();
+done:
+ return dev;
+}
+
+static inline void
+swconfig_put_dev(struct switch_dev *dev)
+{
+ mutex_unlock(&dev->sw_mutex);
+}
+
+static int
+swconfig_dump_attr(struct swconfig_callback *cb, void *arg)
+{
+ struct switch_attr *op = arg;
+ struct genl_info *info = cb->info;
+ struct sk_buff *msg = cb->msg;
+ int id = cb->args[0];
+ void *hdr;
+
+ hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &switch_fam,
+ NLM_F_MULTI, SWITCH_CMD_NEW_ATTR);
+ if (IS_ERR(hdr))
+ return -1;
+
+ if (nla_put_u32(msg, SWITCH_ATTR_OP_ID, id))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, SWITCH_ATTR_OP_TYPE, op->type))
+ goto nla_put_failure;
+ if (nla_put_string(msg, SWITCH_ATTR_OP_NAME, op->name))
+ goto nla_put_failure;
+ if (op->description)
+ if (nla_put_string(msg, SWITCH_ATTR_OP_DESCRIPTION,
+ op->description))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return msg->len;
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+/* spread multipart messages across multiple message buffers */
+static int
+swconfig_send_multipart(struct swconfig_callback *cb, void *arg)
+{
+ struct genl_info *info = cb->info;
+ int restart = 0;
+ int err;
+
+ do {
+ if (!cb->msg) {
+ cb->msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (cb->msg == NULL)
+ goto error;
+ }
+
+ if (!(cb->fill(cb, arg) < 0))
+ break;
+
+ /* fill failed, check if this was already the second attempt */
+ if (restart)
+ goto error;
+
+ /* try again in a new message, send the current one */
+ restart = 1;
+ if (cb->close) {
+ if (cb->close(cb, arg) < 0)
+ goto error;
+ }
+ err = genlmsg_reply(cb->msg, info);
+ cb->msg = NULL;
+ if (err < 0)
+ goto error;
+
+ } while (restart);
+
+ return 0;
+
+error:
+ if (cb->msg)
+ nlmsg_free(cb->msg);
+ return -1;
+}
+
+static int
+swconfig_list_attrs(struct sk_buff *skb, struct genl_info *info)
+{
+ struct genlmsghdr *hdr = nlmsg_data(info->nlhdr);
+ const struct switch_attrlist *alist;
+ struct switch_dev *dev;
+ struct swconfig_callback cb;
+ int err = -EINVAL;
+ int i;
+
+ /* defaults */
+ struct switch_attr *def_list;
+ unsigned long *def_active;
+ int n_def;
+
+ dev = swconfig_get_dev(info);
+ if (!dev)
+ return -EINVAL;
+
+ switch (hdr->cmd) {
+ case SWITCH_CMD_LIST_GLOBAL:
+ alist = &dev->ops->attr_global;
+ def_list = default_global;
+ def_active = &dev->def_global;
+ n_def = ARRAY_SIZE(default_global);
+ break;
+ case SWITCH_CMD_LIST_VLAN:
+ alist = &dev->ops->attr_vlan;
+ def_list = default_vlan;
+ def_active = &dev->def_vlan;
+ n_def = ARRAY_SIZE(default_vlan);
+ break;
+ case SWITCH_CMD_LIST_PORT:
+ alist = &dev->ops->attr_port;
+ def_list = default_port;
+ def_active = &dev->def_port;
+ n_def = ARRAY_SIZE(default_port);
+ break;
+ default:
+ WARN_ON(1);
+ goto out;
+ }
+
+ memset(&cb, 0, sizeof(cb));
+ cb.info = info;
+ cb.fill = swconfig_dump_attr;
+ for (i = 0; i < alist->n_attr; i++) {
+ if (alist->attr[i].disabled)
+ continue;
+ cb.args[0] = i;
+ err = swconfig_send_multipart(&cb, (void *) &alist->attr[i]);
+ if (err < 0)
+ goto error;
+ }
+
+ /* defaults */
+ for (i = 0; i < n_def; i++) {
+ if (!test_bit(i, def_active))
+ continue;
+ cb.args[0] = SWITCH_ATTR_DEFAULTS_OFFSET + i;
+ err = swconfig_send_multipart(&cb, (void *) &def_list[i]);
+ if (err < 0)
+ goto error;
+ }
+ swconfig_put_dev(dev);
+
+ if (!cb.msg)
+ return 0;
+
+ return genlmsg_reply(cb.msg, info);
+
+error:
+ if (cb.msg)
+ nlmsg_free(cb.msg);
+out:
+ swconfig_put_dev(dev);
+ return err;
+}
+
+static const struct switch_attr *
+swconfig_lookup_attr(struct switch_dev *dev, struct genl_info *info,
+ struct switch_val *val)
+{
+ struct genlmsghdr *hdr = nlmsg_data(info->nlhdr);
+ const struct switch_attrlist *alist;
+ const struct switch_attr *attr = NULL;
+ unsigned int attr_id;
+
+ /* defaults */
+ struct switch_attr *def_list;
+ unsigned long *def_active;
+ int n_def;
+
+ if (!info->attrs[SWITCH_ATTR_OP_ID])
+ goto done;
+
+ switch (hdr->cmd) {
+ case SWITCH_CMD_SET_GLOBAL:
+ case SWITCH_CMD_GET_GLOBAL:
+ alist = &dev->ops->attr_global;
+ def_list = default_global;
+ def_active = &dev->def_global;
+ n_def = ARRAY_SIZE(default_global);
+ break;
+ case SWITCH_CMD_SET_VLAN:
+ case SWITCH_CMD_GET_VLAN:
+ alist = &dev->ops->attr_vlan;
+ def_list = default_vlan;
+ def_active = &dev->def_vlan;
+ n_def = ARRAY_SIZE(default_vlan);
+ if (!info->attrs[SWITCH_ATTR_OP_VLAN])
+ goto done;
+ val->port_vlan = nla_get_u32(info->attrs[SWITCH_ATTR_OP_VLAN]);
+ if (val->port_vlan >= dev->vlans)
+ goto done;
+ break;
+ case SWITCH_CMD_SET_PORT:
+ case SWITCH_CMD_GET_PORT:
+ alist = &dev->ops->attr_port;
+ def_list = default_port;
+ def_active = &dev->def_port;
+ n_def = ARRAY_SIZE(default_port);
+ if (!info->attrs[SWITCH_ATTR_OP_PORT])
+ goto done;
+ val->port_vlan = nla_get_u32(info->attrs[SWITCH_ATTR_OP_PORT]);
+ if (val->port_vlan >= dev->ports)
+ goto done;
+ break;
+ default:
+ WARN_ON(1);
+ goto done;
+ }
+
+ if (!alist)
+ goto done;
+
+ attr_id = nla_get_u32(info->attrs[SWITCH_ATTR_OP_ID]);
+ if (attr_id >= SWITCH_ATTR_DEFAULTS_OFFSET) {
+ attr_id -= SWITCH_ATTR_DEFAULTS_OFFSET;
+ if (attr_id >= n_def)
+ goto done;
+ if (!test_bit(attr_id, def_active))
+ goto done;
+ attr = &def_list[attr_id];
+ } else {
+ if (attr_id >= alist->n_attr)
+ goto done;
+ attr = &alist->attr[attr_id];
+ }
+
+ if (attr->disabled)
+ attr = NULL;
+
+done:
+ if (!attr)
+ pr_debug("attribute lookup failed\n");
+ val->attr = attr;
+ return attr;
+}
+
+static int
+swconfig_parse_ports(struct sk_buff *msg, struct nlattr *head,
+ struct switch_val *val, int max)
+{
+ struct nlattr *nla;
+ int rem;
+
+ val->len = 0;
+ nla_for_each_nested(nla, head, rem) {
+ struct nlattr *tb[SWITCH_PORT_ATTR_MAX+1];
+ struct switch_port *port;
+
+ if (val->len >= max)
+ return -EINVAL;
+
+ port = &val->value.ports[val->len];
+
+ if (nla_parse_nested_deprecated(tb, SWITCH_PORT_ATTR_MAX, nla,
+ port_policy, NULL))
+ return -EINVAL;
+
+ if (!tb[SWITCH_PORT_ID])
+ return -EINVAL;
+
+ port->id = nla_get_u32(tb[SWITCH_PORT_ID]);
+ if (tb[SWITCH_PORT_FLAG_TAGGED])
+ port->flags |= (1 << SWITCH_PORT_FLAG_TAGGED);
+ val->len++;
+ }
+
+ return 0;
+}
+
+static int
+swconfig_parse_link(struct sk_buff *msg, struct nlattr *nla,
+ struct switch_port_link *link)
+{
+ struct nlattr *tb[SWITCH_LINK_ATTR_MAX + 1];
+
+ if (nla_parse_nested_deprecated(tb, SWITCH_LINK_ATTR_MAX, nla, link_policy, NULL))
+ return -EINVAL;
+
+ link->duplex = !!tb[SWITCH_LINK_FLAG_DUPLEX];
+ link->aneg = !!tb[SWITCH_LINK_FLAG_ANEG];
+ link->speed = nla_get_u32(tb[SWITCH_LINK_SPEED]);
+
+ return 0;
+}
+
+static int
+swconfig_set_attr(struct sk_buff *skb, struct genl_info *info)
+{
+ const struct switch_attr *attr;
+ struct switch_dev *dev;
+ struct switch_val val;
+ int err = -EINVAL;
+
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ dev = swconfig_get_dev(info);
+ if (!dev)
+ return -EINVAL;
+
+ memset(&val, 0, sizeof(val));
+ attr = swconfig_lookup_attr(dev, info, &val);
+ if (!attr || !attr->set)
+ goto error;
+
+ val.attr = attr;
+ switch (attr->type) {
+ case SWITCH_TYPE_NOVAL:
+ break;
+ case SWITCH_TYPE_INT:
+ if (!info->attrs[SWITCH_ATTR_OP_VALUE_INT])
+ goto error;
+ val.value.i =
+ nla_get_u32(info->attrs[SWITCH_ATTR_OP_VALUE_INT]);
+ break;
+ case SWITCH_TYPE_STRING:
+ if (!info->attrs[SWITCH_ATTR_OP_VALUE_STR])
+ goto error;
+ val.value.s =
+ nla_data(info->attrs[SWITCH_ATTR_OP_VALUE_STR]);
+ break;
+ case SWITCH_TYPE_PORTS:
+ val.value.ports = dev->portbuf;
+ memset(dev->portbuf, 0,
+ sizeof(struct switch_port) * dev->ports);
+
+ /* TODO: implement multipart? */
+ if (info->attrs[SWITCH_ATTR_OP_VALUE_PORTS]) {
+ err = swconfig_parse_ports(skb,
+ info->attrs[SWITCH_ATTR_OP_VALUE_PORTS],
+ &val, dev->ports);
+ if (err < 0)
+ goto error;
+ } else {
+ val.len = 0;
+ err = 0;
+ }
+ break;
+ case SWITCH_TYPE_LINK:
+ val.value.link = &dev->linkbuf;
+ memset(&dev->linkbuf, 0, sizeof(struct switch_port_link));
+
+ if (info->attrs[SWITCH_ATTR_OP_VALUE_LINK]) {
+ err = swconfig_parse_link(skb,
+ info->attrs[SWITCH_ATTR_OP_VALUE_LINK],
+ val.value.link);
+ if (err < 0)
+ goto error;
+ } else {
+ val.len = 0;
+ err = 0;
+ }
+ break;
+ default:
+ goto error;
+ }
+
+ err = attr->set(dev, attr, &val);
+error:
+ swconfig_put_dev(dev);
+ return err;
+}
+
+static int
+swconfig_close_portlist(struct swconfig_callback *cb, void *arg)
+{
+ if (cb->nest[0])
+ nla_nest_end(cb->msg, cb->nest[0]);
+ return 0;
+}
+
+static int
+swconfig_send_port(struct swconfig_callback *cb, void *arg)
+{
+ const struct switch_port *port = arg;
+ struct nlattr *p = NULL;
+
+ if (!cb->nest[0]) {
+ cb->nest[0] = nla_nest_start(cb->msg, cb->cmd);
+ if (!cb->nest[0])
+ return -1;
+ }
+
+ p = nla_nest_start(cb->msg, SWITCH_ATTR_PORT);
+ if (!p)
+ goto error;
+
+ if (nla_put_u32(cb->msg, SWITCH_PORT_ID, port->id))
+ goto nla_put_failure;
+ if (port->flags & (1 << SWITCH_PORT_FLAG_TAGGED)) {
+ if (nla_put_flag(cb->msg, SWITCH_PORT_FLAG_TAGGED))
+ goto nla_put_failure;
+ }
+
+ nla_nest_end(cb->msg, p);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(cb->msg, p);
+error:
+ nla_nest_cancel(cb->msg, cb->nest[0]);
+ return -1;
+}
+
+static int
+swconfig_send_ports(struct sk_buff **msg, struct genl_info *info, int attr,
+ const struct switch_val *val)
+{
+ struct swconfig_callback cb;
+ int err = 0;
+ int i;
+
+ if (!val->value.ports)
+ return -EINVAL;
+
+ memset(&cb, 0, sizeof(cb));
+ cb.cmd = attr;
+ cb.msg = *msg;
+ cb.info = info;
+ cb.fill = swconfig_send_port;
+ cb.close = swconfig_close_portlist;
+
+ cb.nest[0] = nla_nest_start(cb.msg, cb.cmd);
+ for (i = 0; i < val->len; i++) {
+ err = swconfig_send_multipart(&cb, &val->value.ports[i]);
+ if (err)
+ goto done;
+ }
+ err = val->len;
+ swconfig_close_portlist(&cb, NULL);
+ *msg = cb.msg;
+
+done:
+ return err;
+}
+
+static int
+swconfig_send_link(struct sk_buff *msg, struct genl_info *info, int attr,
+ const struct switch_port_link *link)
+{
+ struct nlattr *p = NULL;
+ int err = 0;
+
+ p = nla_nest_start(msg, attr);
+ if (link->link) {
+ if (nla_put_flag(msg, SWITCH_LINK_FLAG_LINK))
+ goto nla_put_failure;
+ }
+ if (link->duplex) {
+ if (nla_put_flag(msg, SWITCH_LINK_FLAG_DUPLEX))
+ goto nla_put_failure;
+ }
+ if (link->aneg) {
+ if (nla_put_flag(msg, SWITCH_LINK_FLAG_ANEG))
+ goto nla_put_failure;
+ }
+ if (link->tx_flow) {
+ if (nla_put_flag(msg, SWITCH_LINK_FLAG_TX_FLOW))
+ goto nla_put_failure;
+ }
+ if (link->rx_flow) {
+ if (nla_put_flag(msg, SWITCH_LINK_FLAG_RX_FLOW))
+ goto nla_put_failure;
+ }
+ if (nla_put_u32(msg, SWITCH_LINK_SPEED, link->speed))
+ goto nla_put_failure;
+ if (link->eee & ADVERTISED_100baseT_Full) {
+ if (nla_put_flag(msg, SWITCH_LINK_FLAG_EEE_100BASET))
+ goto nla_put_failure;
+ }
+ if (link->eee & ADVERTISED_1000baseT_Full) {
+ if (nla_put_flag(msg, SWITCH_LINK_FLAG_EEE_1000BASET))
+ goto nla_put_failure;
+ }
+ nla_nest_end(msg, p);
+
+ return err;
+
+nla_put_failure:
+ nla_nest_cancel(msg, p);
+ return -1;
+}
+
+static int
+swconfig_get_attr(struct sk_buff *skb, struct genl_info *info)
+{
+ struct genlmsghdr *hdr = nlmsg_data(info->nlhdr);
+ const struct switch_attr *attr;
+ struct switch_dev *dev;
+ struct sk_buff *msg = NULL;
+ struct switch_val val;
+ int err = -EINVAL;
+ int cmd = hdr->cmd;
+
+ dev = swconfig_get_dev(info);
+ if (!dev)
+ return -EINVAL;
+
+ memset(&val, 0, sizeof(val));
+ attr = swconfig_lookup_attr(dev, info, &val);
+ if (!attr || !attr->get)
+ goto error;
+
+ if (attr->type == SWITCH_TYPE_PORTS) {
+ val.value.ports = dev->portbuf;
+ memset(dev->portbuf, 0,
+ sizeof(struct switch_port) * dev->ports);
+ } else if (attr->type == SWITCH_TYPE_LINK) {
+ val.value.link = &dev->linkbuf;
+ memset(&dev->linkbuf, 0, sizeof(struct switch_port_link));
+ }
+
+ err = attr->get(dev, attr, &val);
+ if (err)
+ goto error;
+
+ msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!msg)
+ goto error;
+
+ hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &switch_fam,
+ 0, cmd);
+ if (IS_ERR(hdr))
+ goto nla_put_failure;
+
+ switch (attr->type) {
+ case SWITCH_TYPE_INT:
+ if (nla_put_u32(msg, SWITCH_ATTR_OP_VALUE_INT, val.value.i))
+ goto nla_put_failure;
+ break;
+ case SWITCH_TYPE_STRING:
+ if (nla_put_string(msg, SWITCH_ATTR_OP_VALUE_STR, val.value.s))
+ goto nla_put_failure;
+ break;
+ case SWITCH_TYPE_PORTS:
+ err = swconfig_send_ports(&msg, info,
+ SWITCH_ATTR_OP_VALUE_PORTS, &val);
+ if (err < 0)
+ goto nla_put_failure;
+ break;
+ case SWITCH_TYPE_LINK:
+ err = swconfig_send_link(msg, info,
+ SWITCH_ATTR_OP_VALUE_LINK, val.value.link);
+ if (err < 0)
+ goto nla_put_failure;
+ break;
+ default:
+ pr_debug("invalid type in attribute\n");
+ err = -EINVAL;
+ goto nla_put_failure;
+ }
+ genlmsg_end(msg, hdr);
+ err = msg->len;
+ if (err < 0)
+ goto nla_put_failure;
+
+ swconfig_put_dev(dev);
+ return genlmsg_reply(msg, info);
+
+nla_put_failure:
+ if (msg)
+ nlmsg_free(msg);
+error:
+ swconfig_put_dev(dev);
+ if (!err)
+ err = -ENOMEM;
+ return err;
+}
+
+static int
+swconfig_send_switch(struct sk_buff *msg, u32 pid, u32 seq, int flags,
+ const struct switch_dev *dev)
+{
+ struct nlattr *p = NULL, *m = NULL;
+ void *hdr;
+ int i;
+
+ hdr = genlmsg_put(msg, pid, seq, &switch_fam, flags,
+ SWITCH_CMD_NEW_ATTR);
+ if (IS_ERR(hdr))
+ return -1;
+
+ if (nla_put_u32(msg, SWITCH_ATTR_ID, dev->id))
+ goto nla_put_failure;
+ if (nla_put_string(msg, SWITCH_ATTR_DEV_NAME, dev->devname))
+ goto nla_put_failure;
+ if (nla_put_string(msg, SWITCH_ATTR_ALIAS, dev->alias))
+ goto nla_put_failure;
+ if (nla_put_string(msg, SWITCH_ATTR_NAME, dev->name))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, SWITCH_ATTR_VLANS, dev->vlans))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, SWITCH_ATTR_PORTS, dev->ports))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, SWITCH_ATTR_CPU_PORT, dev->cpu_port))
+ goto nla_put_failure;
+
+ m = nla_nest_start(msg, SWITCH_ATTR_PORTMAP);
+ if (!m)
+ goto nla_put_failure;
+ for (i = 0; i < dev->ports; i++) {
+ p = nla_nest_start(msg, SWITCH_ATTR_PORTS);
+ if (!p)
+ continue;
+ if (dev->portmap[i].s) {
+ if (nla_put_string(msg, SWITCH_PORTMAP_SEGMENT,
+ dev->portmap[i].s))
+ goto nla_put_failure;
+ if (nla_put_u32(msg, SWITCH_PORTMAP_VIRT,
+ dev->portmap[i].virt))
+ goto nla_put_failure;
+ }
+ nla_nest_end(msg, p);
+ }
+ nla_nest_end(msg, m);
+ genlmsg_end(msg, hdr);
+ return msg->len;
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int swconfig_dump_switches(struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ struct switch_dev *dev;
+ int start = cb->args[0];
+ int idx = 0;
+
+ swconfig_lock();
+ list_for_each_entry(dev, &swdevs, dev_list) {
+ if (++idx <= start)
+ continue;
+ if (swconfig_send_switch(skb, NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI,
+ dev) < 0)
+ break;
+ }
+ swconfig_unlock();
+ cb->args[0] = idx;
+
+ return skb->len;
+}
+
+static int
+swconfig_done(struct netlink_callback *cb)
+{
+ return 0;
+}
+
+static struct genl_ops swconfig_ops[] = {
+ {
+ .cmd = SWITCH_CMD_LIST_GLOBAL,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = swconfig_list_attrs,
+ },
+ {
+ .cmd = SWITCH_CMD_LIST_VLAN,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = swconfig_list_attrs,
+ },
+ {
+ .cmd = SWITCH_CMD_LIST_PORT,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = swconfig_list_attrs,
+ },
+ {
+ .cmd = SWITCH_CMD_GET_GLOBAL,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = swconfig_get_attr,
+ },
+ {
+ .cmd = SWITCH_CMD_GET_VLAN,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = swconfig_get_attr,
+ },
+ {
+ .cmd = SWITCH_CMD_GET_PORT,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = swconfig_get_attr,
+ },
+ {
+ .cmd = SWITCH_CMD_SET_GLOBAL,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .flags = GENL_ADMIN_PERM,
+ .doit = swconfig_set_attr,
+ },
+ {
+ .cmd = SWITCH_CMD_SET_VLAN,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .flags = GENL_ADMIN_PERM,
+ .doit = swconfig_set_attr,
+ },
+ {
+ .cmd = SWITCH_CMD_SET_PORT,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .flags = GENL_ADMIN_PERM,
+ .doit = swconfig_set_attr,
+ },
+ {
+ .cmd = SWITCH_CMD_GET_SWITCH,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .dumpit = swconfig_dump_switches,
+ .done = swconfig_done,
+ }
+};
+
+static struct genl_family switch_fam = {
+ .name = "switch",
+ .hdrsize = 0,
+ .version = 1,
+ .maxattr = SWITCH_ATTR_MAX,
+ .policy = switch_policy,
+ .module = THIS_MODULE,
+ .ops = swconfig_ops,
+ .n_ops = ARRAY_SIZE(swconfig_ops),
+};
+
+#ifdef CONFIG_OF
+void
+of_switch_load_portmap(struct switch_dev *dev)
+{
+ struct device_node *port;
+
+ if (!dev->of_node)
+ return;
+
+ for_each_child_of_node(dev->of_node, port) {
+ const __be32 *prop;
+ const char *segment;
+ int size, phys;
+
+ if (!of_device_is_compatible(port, "swconfig,port"))
+ continue;
+
+ if (of_property_read_string(port, "swconfig,segment", &segment))
+ continue;
+
+ prop = of_get_property(port, "swconfig,portmap", &size);
+ if (!prop)
+ continue;
+
+ if (size != (2 * sizeof(*prop))) {
+ pr_err("%s: failed to parse port mapping\n",
+ port->name);
+ continue;
+ }
+
+ phys = be32_to_cpup(prop++);
+ if ((phys < 0) | (phys >= dev->ports)) {
+ pr_err("%s: physical port index out of range\n",
+ port->name);
+ continue;
+ }
+
+ dev->portmap[phys].s = kstrdup(segment, GFP_KERNEL);
+ dev->portmap[phys].virt = be32_to_cpup(prop);
+ pr_debug("Found port: %s, physical: %d, virtual: %d\n",
+ segment, phys, dev->portmap[phys].virt);
+ }
+}
+#endif
+
+int
+register_switch(struct switch_dev *dev, struct net_device *netdev)
+{
+ struct switch_dev *sdev;
+ const int max_switches = 8 * sizeof(unsigned long);
+ unsigned long in_use = 0;
+ int err;
+ int i;
+
+ INIT_LIST_HEAD(&dev->dev_list);
+ if (netdev) {
+ dev->netdev = netdev;
+ if (!dev->alias)
+ dev->alias = netdev->name;
+ }
+ BUG_ON(!dev->alias);
+
+ /* Make sure swdev_id doesn't overflow */
+ if (swdev_id == INT_MAX) {
+ return -ENOMEM;
+ }
+
+ if (dev->ports > 0) {
+ dev->portbuf = kzalloc(sizeof(struct switch_port) *
+ dev->ports, GFP_KERNEL);
+ if (!dev->portbuf)
+ return -ENOMEM;
+ dev->portmap = kzalloc(sizeof(struct switch_portmap) *
+ dev->ports, GFP_KERNEL);
+ if (!dev->portmap) {
+ kfree(dev->portbuf);
+ return -ENOMEM;
+ }
+ }
+ swconfig_defaults_init(dev);
+ mutex_init(&dev->sw_mutex);
+ swconfig_lock();
+ dev->id = ++swdev_id;
+
+ list_for_each_entry(sdev, &swdevs, dev_list) {
+ if (!sscanf(sdev->devname, SWCONFIG_DEVNAME, &i))
+ continue;
+ if (i < 0 || i > max_switches)
+ continue;
+
+ set_bit(i, &in_use);
+ }
+ i = find_first_zero_bit(&in_use, max_switches);
+
+ if (i == max_switches) {
+ swconfig_unlock();
+ return -ENFILE;
+ }
+
+#ifdef CONFIG_OF
+ if (dev->ports)
+ of_switch_load_portmap(dev);
+#endif
+
+ /* fill device name */
+ snprintf(dev->devname, IFNAMSIZ, SWCONFIG_DEVNAME, i);
+
+ list_add_tail(&dev->dev_list, &swdevs);
+ swconfig_unlock();
+
+ err = swconfig_create_led_trigger(dev);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(register_switch);
+
+void
+unregister_switch(struct switch_dev *dev)
+{
+ swconfig_destroy_led_trigger(dev);
+ kfree(dev->portbuf);
+ mutex_lock(&dev->sw_mutex);
+ swconfig_lock();
+ list_del(&dev->dev_list);
+ swconfig_unlock();
+ mutex_unlock(&dev->sw_mutex);
+}
+EXPORT_SYMBOL_GPL(unregister_switch);
+
+int
+switch_generic_set_link(struct switch_dev *dev, int port,
+ struct switch_port_link *link)
+{
+ if (WARN_ON(!dev->ops->phy_write16))
+ return -ENOTSUPP;
+
+ /* Generic implementation */
+ if (link->aneg) {
+ dev->ops->phy_write16(dev, port, MII_BMCR, 0x0000);
+ dev->ops->phy_write16(dev, port, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
+ } else {
+ u16 bmcr = 0;
+
+ if (link->duplex)
+ bmcr |= BMCR_FULLDPLX;
+
+ switch (link->speed) {
+ case SWITCH_PORT_SPEED_10:
+ break;
+ case SWITCH_PORT_SPEED_100:
+ bmcr |= BMCR_SPEED100;
+ break;
+ case SWITCH_PORT_SPEED_1000:
+ bmcr |= BMCR_SPEED1000;
+ break;
+ default:
+ return -ENOTSUPP;
+ }
+
+ dev->ops->phy_write16(dev, port, MII_BMCR, bmcr);
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(switch_generic_set_link);
+
+static int __init
+swconfig_init(void)
+{
+ INIT_LIST_HEAD(&swdevs);
+
+ return genl_register_family(&switch_fam);
+}
+
+static void __exit
+swconfig_exit(void)
+{
+ genl_unregister_family(&switch_fam);
+}
+
+module_init(swconfig_init);
+module_exit(swconfig_exit);