# SPDX-License-Identifier: GPL-2.0
obj-y := leftover.o core.o netlink.o netlink_gen.o dev.o port.o sb.o dpipe.o \
- resource.o param.o region.o health.o trap.o
+ resource.o param.o region.o health.o trap.o rate.o
void devlink_trap_groups_notify_unregister(struct devlink *devlink);
void devlink_traps_notify_register(struct devlink *devlink);
void devlink_traps_notify_unregister(struct devlink *devlink);
+void devlink_rates_notify_register(struct devlink *devlink);
+void devlink_rates_notify_unregister(struct devlink *devlink);
/* Ports */
#define ASSERT_DEVLINK_PORT_INITIALIZED(devlink_port) \
struct genl_info *info);
int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
struct genl_info *info);
+int devlink_nl_cmd_rate_set_doit(struct sk_buff *skb, struct genl_info *info);
+int devlink_nl_cmd_rate_new_doit(struct sk_buff *skb, struct genl_info *info);
+int devlink_nl_cmd_rate_del_doit(struct sk_buff *skb, struct genl_info *info);
EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report);
-static inline bool
-devlink_rate_is_leaf(struct devlink_rate *devlink_rate)
-{
- return devlink_rate->type == DEVLINK_RATE_TYPE_LEAF;
-}
-
-static inline bool
-devlink_rate_is_node(struct devlink_rate *devlink_rate)
-{
- return devlink_rate->type == DEVLINK_RATE_TYPE_NODE;
-}
-
-static struct devlink_rate *
-devlink_rate_leaf_get_from_info(struct devlink *devlink, struct genl_info *info)
-{
- struct devlink_rate *devlink_rate;
- struct devlink_port *devlink_port;
-
- devlink_port = devlink_port_get_from_attrs(devlink, info->attrs);
- if (IS_ERR(devlink_port))
- return ERR_CAST(devlink_port);
- devlink_rate = devlink_port->devlink_rate;
- return devlink_rate ?: ERR_PTR(-ENODEV);
-}
-
-static struct devlink_rate *
-devlink_rate_node_get_by_name(struct devlink *devlink, const char *node_name)
-{
- static struct devlink_rate *devlink_rate;
-
- list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
- if (devlink_rate_is_node(devlink_rate) &&
- !strcmp(node_name, devlink_rate->name))
- return devlink_rate;
- }
- return ERR_PTR(-ENODEV);
-}
-
-static struct devlink_rate *
-devlink_rate_node_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
-{
- const char *rate_node_name;
- size_t len;
-
- if (!attrs[DEVLINK_ATTR_RATE_NODE_NAME])
- return ERR_PTR(-EINVAL);
- rate_node_name = nla_data(attrs[DEVLINK_ATTR_RATE_NODE_NAME]);
- len = strlen(rate_node_name);
- /* Name cannot be empty or decimal number */
- if (!len || strspn(rate_node_name, "0123456789") == len)
- return ERR_PTR(-EINVAL);
-
- return devlink_rate_node_get_by_name(devlink, rate_node_name);
-}
-
-static struct devlink_rate *
-devlink_rate_node_get_from_info(struct devlink *devlink, struct genl_info *info)
-{
- return devlink_rate_node_get_from_attrs(devlink, info->attrs);
-}
-
-static struct devlink_rate *
-devlink_rate_get_from_info(struct devlink *devlink, struct genl_info *info)
-{
- struct nlattr **attrs = info->attrs;
-
- if (attrs[DEVLINK_ATTR_PORT_INDEX])
- return devlink_rate_leaf_get_from_info(devlink, info);
- else if (attrs[DEVLINK_ATTR_RATE_NODE_NAME])
- return devlink_rate_node_get_from_info(devlink, info);
- else
- return ERR_PTR(-EINVAL);
-}
-
static struct devlink_linecard *
devlink_linecard_get_by_index(struct devlink *devlink,
unsigned int linecard_index)
return -EMSGSIZE;
}
-static int devlink_nl_rate_fill(struct sk_buff *msg,
- struct devlink_rate *devlink_rate,
- enum devlink_command cmd, u32 portid, u32 seq,
- int flags, struct netlink_ext_ack *extack)
-{
- struct devlink *devlink = devlink_rate->devlink;
- void *hdr;
-
- hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
- if (!hdr)
- return -EMSGSIZE;
-
- if (devlink_nl_put_handle(msg, devlink))
- goto nla_put_failure;
-
- if (nla_put_u16(msg, DEVLINK_ATTR_RATE_TYPE, devlink_rate->type))
- goto nla_put_failure;
-
- if (devlink_rate_is_leaf(devlink_rate)) {
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
- devlink_rate->devlink_port->index))
- goto nla_put_failure;
- } else if (devlink_rate_is_node(devlink_rate)) {
- if (nla_put_string(msg, DEVLINK_ATTR_RATE_NODE_NAME,
- devlink_rate->name))
- goto nla_put_failure;
- }
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_SHARE,
- devlink_rate->tx_share, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_MAX,
- devlink_rate->tx_max, DEVLINK_ATTR_PAD))
- goto nla_put_failure;
-
- if (nla_put_u32(msg, DEVLINK_ATTR_RATE_TX_PRIORITY,
- devlink_rate->tx_priority))
- goto nla_put_failure;
-
- if (nla_put_u32(msg, DEVLINK_ATTR_RATE_TX_WEIGHT,
- devlink_rate->tx_weight))
- goto nla_put_failure;
-
- if (devlink_rate->parent)
- if (nla_put_string(msg, DEVLINK_ATTR_RATE_PARENT_NODE_NAME,
- devlink_rate->parent->name))
- goto nla_put_failure;
-
- genlmsg_end(msg, hdr);
- return 0;
-
-nla_put_failure:
- genlmsg_cancel(msg, hdr);
- return -EMSGSIZE;
-}
-
-static void devlink_rate_notify(struct devlink_rate *devlink_rate,
- enum devlink_command cmd)
-{
- struct devlink *devlink = devlink_rate->devlink;
- struct sk_buff *msg;
- int err;
-
- WARN_ON(cmd != DEVLINK_CMD_RATE_NEW && cmd != DEVLINK_CMD_RATE_DEL);
-
- if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
- return;
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return;
-
- err = devlink_nl_rate_fill(msg, devlink_rate, cmd, 0, 0, 0, NULL);
- if (err) {
- nlmsg_free(msg);
- return;
- }
-
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
- 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-}
-
-static void devlink_rates_notify_register(struct devlink *devlink)
-{
- struct devlink_rate *rate_node;
-
- list_for_each_entry(rate_node, &devlink->rate_list, list)
- devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
-}
-
-static void devlink_rates_notify_unregister(struct devlink *devlink)
-{
- struct devlink_rate *rate_node;
-
- list_for_each_entry_reverse(rate_node, &devlink->rate_list, list)
- devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
-}
-
-static int
-devlink_nl_rate_get_dump_one(struct sk_buff *msg, struct devlink *devlink,
- struct netlink_callback *cb, int flags)
-{
- struct devlink_nl_dump_state *state = devlink_dump_state(cb);
- struct devlink_rate *devlink_rate;
- int idx = 0;
- int err = 0;
-
- list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
- enum devlink_command cmd = DEVLINK_CMD_RATE_NEW;
- u32 id = NETLINK_CB(cb->skb).portid;
-
- if (idx < state->idx) {
- idx++;
- continue;
- }
- err = devlink_nl_rate_fill(msg, devlink_rate, cmd, id,
- cb->nlh->nlmsg_seq, flags, NULL);
- if (err) {
- state->idx = idx;
- break;
- }
- idx++;
- }
-
- return err;
-}
-
-int devlink_nl_rate_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
-{
- return devlink_nl_dumpit(skb, cb, devlink_nl_rate_get_dump_one);
-}
-
-int devlink_nl_rate_get_doit(struct sk_buff *skb, struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_rate *devlink_rate;
- struct sk_buff *msg;
- int err;
-
- devlink_rate = devlink_rate_get_from_info(devlink, info);
- if (IS_ERR(devlink_rate))
- return PTR_ERR(devlink_rate);
-
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
- if (!msg)
- return -ENOMEM;
-
- err = devlink_nl_rate_fill(msg, devlink_rate, DEVLINK_CMD_RATE_NEW,
- info->snd_portid, info->snd_seq, 0,
- info->extack);
- if (err) {
- nlmsg_free(msg);
- return err;
- }
-
- return genlmsg_reply(msg, info);
-}
-
-static bool
-devlink_rate_is_parent_node(struct devlink_rate *devlink_rate,
- struct devlink_rate *parent)
-{
- while (parent) {
- if (parent == devlink_rate)
- return true;
- parent = parent->parent;
- }
- return false;
-}
-
-static int
-devlink_nl_rate_parent_node_set(struct devlink_rate *devlink_rate,
- struct genl_info *info,
- struct nlattr *nla_parent)
-{
- struct devlink *devlink = devlink_rate->devlink;
- const char *parent_name = nla_data(nla_parent);
- const struct devlink_ops *ops = devlink->ops;
- size_t len = strlen(parent_name);
- struct devlink_rate *parent;
- int err = -EOPNOTSUPP;
-
- parent = devlink_rate->parent;
-
- if (parent && !len) {
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_parent_set(devlink_rate, NULL,
- devlink_rate->priv, NULL,
- info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_parent_set(devlink_rate, NULL,
- devlink_rate->priv, NULL,
- info->extack);
- if (err)
- return err;
-
- refcount_dec(&parent->refcnt);
- devlink_rate->parent = NULL;
- } else if (len) {
- parent = devlink_rate_node_get_by_name(devlink, parent_name);
- if (IS_ERR(parent))
- return -ENODEV;
-
- if (parent == devlink_rate) {
- NL_SET_ERR_MSG(info->extack, "Parent to self is not allowed");
- return -EINVAL;
- }
-
- if (devlink_rate_is_node(devlink_rate) &&
- devlink_rate_is_parent_node(devlink_rate, parent->parent)) {
- NL_SET_ERR_MSG(info->extack, "Node is already a parent of parent node.");
- return -EEXIST;
- }
-
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_parent_set(devlink_rate, parent,
- devlink_rate->priv, parent->priv,
- info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_parent_set(devlink_rate, parent,
- devlink_rate->priv, parent->priv,
- info->extack);
- if (err)
- return err;
-
- if (devlink_rate->parent)
- /* we're reassigning to other parent in this case */
- refcount_dec(&devlink_rate->parent->refcnt);
-
- refcount_inc(&parent->refcnt);
- devlink_rate->parent = parent;
- }
-
- return 0;
-}
-
-static int devlink_nl_rate_set(struct devlink_rate *devlink_rate,
- const struct devlink_ops *ops,
- struct genl_info *info)
-{
- struct nlattr *nla_parent, **attrs = info->attrs;
- int err = -EOPNOTSUPP;
- u32 priority;
- u32 weight;
- u64 rate;
-
- if (attrs[DEVLINK_ATTR_RATE_TX_SHARE]) {
- rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_SHARE]);
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_tx_share_set(devlink_rate, devlink_rate->priv,
- rate, info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_tx_share_set(devlink_rate, devlink_rate->priv,
- rate, info->extack);
- if (err)
- return err;
- devlink_rate->tx_share = rate;
- }
-
- if (attrs[DEVLINK_ATTR_RATE_TX_MAX]) {
- rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_MAX]);
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_tx_max_set(devlink_rate, devlink_rate->priv,
- rate, info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_tx_max_set(devlink_rate, devlink_rate->priv,
- rate, info->extack);
- if (err)
- return err;
- devlink_rate->tx_max = rate;
- }
-
- if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY]) {
- priority = nla_get_u32(attrs[DEVLINK_ATTR_RATE_TX_PRIORITY]);
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_tx_priority_set(devlink_rate, devlink_rate->priv,
- priority, info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_tx_priority_set(devlink_rate, devlink_rate->priv,
- priority, info->extack);
-
- if (err)
- return err;
- devlink_rate->tx_priority = priority;
- }
-
- if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT]) {
- weight = nla_get_u32(attrs[DEVLINK_ATTR_RATE_TX_WEIGHT]);
- if (devlink_rate_is_leaf(devlink_rate))
- err = ops->rate_leaf_tx_weight_set(devlink_rate, devlink_rate->priv,
- weight, info->extack);
- else if (devlink_rate_is_node(devlink_rate))
- err = ops->rate_node_tx_weight_set(devlink_rate, devlink_rate->priv,
- weight, info->extack);
-
- if (err)
- return err;
- devlink_rate->tx_weight = weight;
- }
-
- nla_parent = attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME];
- if (nla_parent) {
- err = devlink_nl_rate_parent_node_set(devlink_rate, info,
- nla_parent);
- if (err)
- return err;
- }
-
- return 0;
-}
-
-static bool devlink_rate_set_ops_supported(const struct devlink_ops *ops,
- struct genl_info *info,
- enum devlink_rate_type type)
-{
- struct nlattr **attrs = info->attrs;
-
- if (type == DEVLINK_RATE_TYPE_LEAF) {
- if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_leaf_tx_share_set) {
- NL_SET_ERR_MSG(info->extack, "TX share set isn't supported for the leafs");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_leaf_tx_max_set) {
- NL_SET_ERR_MSG(info->extack, "TX max set isn't supported for the leafs");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
- !ops->rate_leaf_parent_set) {
- NL_SET_ERR_MSG(info->extack, "Parent set isn't supported for the leafs");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY] && !ops->rate_leaf_tx_priority_set) {
- NL_SET_ERR_MSG_ATTR(info->extack,
- attrs[DEVLINK_ATTR_RATE_TX_PRIORITY],
- "TX priority set isn't supported for the leafs");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT] && !ops->rate_leaf_tx_weight_set) {
- NL_SET_ERR_MSG_ATTR(info->extack,
- attrs[DEVLINK_ATTR_RATE_TX_WEIGHT],
- "TX weight set isn't supported for the leafs");
- return false;
- }
- } else if (type == DEVLINK_RATE_TYPE_NODE) {
- if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_node_tx_share_set) {
- NL_SET_ERR_MSG(info->extack, "TX share set isn't supported for the nodes");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_node_tx_max_set) {
- NL_SET_ERR_MSG(info->extack, "TX max set isn't supported for the nodes");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
- !ops->rate_node_parent_set) {
- NL_SET_ERR_MSG(info->extack, "Parent set isn't supported for the nodes");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY] && !ops->rate_node_tx_priority_set) {
- NL_SET_ERR_MSG_ATTR(info->extack,
- attrs[DEVLINK_ATTR_RATE_TX_PRIORITY],
- "TX priority set isn't supported for the nodes");
- return false;
- }
- if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT] && !ops->rate_node_tx_weight_set) {
- NL_SET_ERR_MSG_ATTR(info->extack,
- attrs[DEVLINK_ATTR_RATE_TX_WEIGHT],
- "TX weight set isn't supported for the nodes");
- return false;
- }
- } else {
- WARN(1, "Unknown type of rate object");
- return false;
- }
-
- return true;
-}
-
-static int devlink_nl_cmd_rate_set_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_rate *devlink_rate;
- const struct devlink_ops *ops;
- int err;
-
- devlink_rate = devlink_rate_get_from_info(devlink, info);
- if (IS_ERR(devlink_rate))
- return PTR_ERR(devlink_rate);
-
- ops = devlink->ops;
- if (!ops || !devlink_rate_set_ops_supported(ops, info, devlink_rate->type))
- return -EOPNOTSUPP;
-
- err = devlink_nl_rate_set(devlink_rate, ops, info);
-
- if (!err)
- devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
- return err;
-}
-
-static int devlink_nl_cmd_rate_new_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_rate *rate_node;
- const struct devlink_ops *ops;
- int err;
-
- ops = devlink->ops;
- if (!ops || !ops->rate_node_new || !ops->rate_node_del) {
- NL_SET_ERR_MSG(info->extack, "Rate nodes aren't supported");
- return -EOPNOTSUPP;
- }
-
- if (!devlink_rate_set_ops_supported(ops, info, DEVLINK_RATE_TYPE_NODE))
- return -EOPNOTSUPP;
-
- rate_node = devlink_rate_node_get_from_attrs(devlink, info->attrs);
- if (!IS_ERR(rate_node))
- return -EEXIST;
- else if (rate_node == ERR_PTR(-EINVAL))
- return -EINVAL;
-
- rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL);
- if (!rate_node)
- return -ENOMEM;
-
- rate_node->devlink = devlink;
- rate_node->type = DEVLINK_RATE_TYPE_NODE;
- rate_node->name = nla_strdup(info->attrs[DEVLINK_ATTR_RATE_NODE_NAME], GFP_KERNEL);
- if (!rate_node->name) {
- err = -ENOMEM;
- goto err_strdup;
- }
-
- err = ops->rate_node_new(rate_node, &rate_node->priv, info->extack);
- if (err)
- goto err_node_new;
-
- err = devlink_nl_rate_set(rate_node, ops, info);
- if (err)
- goto err_rate_set;
-
- refcount_set(&rate_node->refcnt, 1);
- list_add(&rate_node->list, &devlink->rate_list);
- devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
- return 0;
-
-err_rate_set:
- ops->rate_node_del(rate_node, rate_node->priv, info->extack);
-err_node_new:
- kfree(rate_node->name);
-err_strdup:
- kfree(rate_node);
- return err;
-}
-
-static int devlink_nl_cmd_rate_del_doit(struct sk_buff *skb,
- struct genl_info *info)
-{
- struct devlink *devlink = info->user_ptr[0];
- struct devlink_rate *rate_node;
- int err;
-
- rate_node = devlink_rate_node_get_from_info(devlink, info);
- if (IS_ERR(rate_node))
- return PTR_ERR(rate_node);
-
- if (refcount_read(&rate_node->refcnt) > 1) {
- NL_SET_ERR_MSG(info->extack, "Node has children. Cannot delete node.");
- return -EBUSY;
- }
-
- devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
- err = devlink->ops->rate_node_del(rate_node, rate_node->priv,
- info->extack);
- if (rate_node->parent)
- refcount_dec(&rate_node->parent->refcnt);
- list_del(&rate_node->list);
- kfree(rate_node->name);
- kfree(rate_node);
- return err;
-}
-
struct devlink_linecard_type {
const char *type;
const void *priv;
return 0;
}
-int devlink_rate_nodes_check(struct devlink *devlink, u16 mode,
- struct netlink_ext_ack *extack)
-{
- struct devlink_rate *devlink_rate;
-
- list_for_each_entry(devlink_rate, &devlink->rate_list, list)
- if (devlink_rate_is_node(devlink_rate)) {
- NL_SET_ERR_MSG(extack, "Rate node(s) exists.");
- return -EBUSY;
- }
- return 0;
-}
-
const struct genl_small_ops devlink_nl_small_ops[40] = {
{
.cmd = DEVLINK_CMD_PORT_SET,
devlink_notify(devlink, DEVLINK_CMD_DEL);
}
-/**
- * devl_rate_node_create - create devlink rate node
- * @devlink: devlink instance
- * @priv: driver private data
- * @node_name: name of the resulting node
- * @parent: parent devlink_rate struct
- *
- * Create devlink rate object of type node
- */
-struct devlink_rate *
-devl_rate_node_create(struct devlink *devlink, void *priv, char *node_name,
- struct devlink_rate *parent)
-{
- struct devlink_rate *rate_node;
-
- rate_node = devlink_rate_node_get_by_name(devlink, node_name);
- if (!IS_ERR(rate_node))
- return ERR_PTR(-EEXIST);
-
- rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL);
- if (!rate_node)
- return ERR_PTR(-ENOMEM);
-
- if (parent) {
- rate_node->parent = parent;
- refcount_inc(&rate_node->parent->refcnt);
- }
-
- rate_node->type = DEVLINK_RATE_TYPE_NODE;
- rate_node->devlink = devlink;
- rate_node->priv = priv;
-
- rate_node->name = kstrdup(node_name, GFP_KERNEL);
- if (!rate_node->name) {
- kfree(rate_node);
- return ERR_PTR(-ENOMEM);
- }
-
- refcount_set(&rate_node->refcnt, 1);
- list_add(&rate_node->list, &devlink->rate_list);
- devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
- return rate_node;
-}
-EXPORT_SYMBOL_GPL(devl_rate_node_create);
-
-/**
- * devl_rate_leaf_create - create devlink rate leaf
- * @devlink_port: devlink port object to create rate object on
- * @priv: driver private data
- * @parent: parent devlink_rate struct
- *
- * Create devlink rate object of type leaf on provided @devlink_port.
- */
-int devl_rate_leaf_create(struct devlink_port *devlink_port, void *priv,
- struct devlink_rate *parent)
-{
- struct devlink *devlink = devlink_port->devlink;
- struct devlink_rate *devlink_rate;
-
- devl_assert_locked(devlink_port->devlink);
-
- if (WARN_ON(devlink_port->devlink_rate))
- return -EBUSY;
-
- devlink_rate = kzalloc(sizeof(*devlink_rate), GFP_KERNEL);
- if (!devlink_rate)
- return -ENOMEM;
-
- if (parent) {
- devlink_rate->parent = parent;
- refcount_inc(&devlink_rate->parent->refcnt);
- }
-
- devlink_rate->type = DEVLINK_RATE_TYPE_LEAF;
- devlink_rate->devlink = devlink;
- devlink_rate->devlink_port = devlink_port;
- devlink_rate->priv = priv;
- list_add_tail(&devlink_rate->list, &devlink->rate_list);
- devlink_port->devlink_rate = devlink_rate;
- devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(devl_rate_leaf_create);
-
-/**
- * devl_rate_leaf_destroy - destroy devlink rate leaf
- *
- * @devlink_port: devlink port linked to the rate object
- *
- * Destroy the devlink rate object of type leaf on provided @devlink_port.
- */
-void devl_rate_leaf_destroy(struct devlink_port *devlink_port)
-{
- struct devlink_rate *devlink_rate = devlink_port->devlink_rate;
-
- devl_assert_locked(devlink_port->devlink);
- if (!devlink_rate)
- return;
-
- devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_DEL);
- if (devlink_rate->parent)
- refcount_dec(&devlink_rate->parent->refcnt);
- list_del(&devlink_rate->list);
- devlink_port->devlink_rate = NULL;
- kfree(devlink_rate);
-}
-EXPORT_SYMBOL_GPL(devl_rate_leaf_destroy);
-
-/**
- * devl_rate_nodes_destroy - destroy all devlink rate nodes on device
- * @devlink: devlink instance
- *
- * Unset parent for all rate objects and destroy all rate nodes
- * on specified device.
- */
-void devl_rate_nodes_destroy(struct devlink *devlink)
-{
- static struct devlink_rate *devlink_rate, *tmp;
- const struct devlink_ops *ops = devlink->ops;
-
- devl_assert_locked(devlink);
-
- list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
- if (!devlink_rate->parent)
- continue;
-
- refcount_dec(&devlink_rate->parent->refcnt);
- if (devlink_rate_is_leaf(devlink_rate))
- ops->rate_leaf_parent_set(devlink_rate, NULL, devlink_rate->priv,
- NULL, NULL);
- else if (devlink_rate_is_node(devlink_rate))
- ops->rate_node_parent_set(devlink_rate, NULL, devlink_rate->priv,
- NULL, NULL);
- }
- list_for_each_entry_safe(devlink_rate, tmp, &devlink->rate_list, list) {
- if (devlink_rate_is_node(devlink_rate)) {
- ops->rate_node_del(devlink_rate, devlink_rate->priv, NULL);
- list_del(&devlink_rate->list);
- kfree(devlink_rate->name);
- kfree(devlink_rate);
- }
- }
-}
-EXPORT_SYMBOL_GPL(devl_rate_nodes_destroy);
-
static int devlink_linecard_types_init(struct devlink_linecard *linecard)
{
struct devlink_linecard_type *linecard_type;
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
+ */
+
+#include "devl_internal.h"
+
+static inline bool
+devlink_rate_is_leaf(struct devlink_rate *devlink_rate)
+{
+ return devlink_rate->type == DEVLINK_RATE_TYPE_LEAF;
+}
+
+static inline bool
+devlink_rate_is_node(struct devlink_rate *devlink_rate)
+{
+ return devlink_rate->type == DEVLINK_RATE_TYPE_NODE;
+}
+
+static struct devlink_rate *
+devlink_rate_leaf_get_from_info(struct devlink *devlink, struct genl_info *info)
+{
+ struct devlink_rate *devlink_rate;
+ struct devlink_port *devlink_port;
+
+ devlink_port = devlink_port_get_from_attrs(devlink, info->attrs);
+ if (IS_ERR(devlink_port))
+ return ERR_CAST(devlink_port);
+ devlink_rate = devlink_port->devlink_rate;
+ return devlink_rate ?: ERR_PTR(-ENODEV);
+}
+
+static struct devlink_rate *
+devlink_rate_node_get_by_name(struct devlink *devlink, const char *node_name)
+{
+ static struct devlink_rate *devlink_rate;
+
+ list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
+ if (devlink_rate_is_node(devlink_rate) &&
+ !strcmp(node_name, devlink_rate->name))
+ return devlink_rate;
+ }
+ return ERR_PTR(-ENODEV);
+}
+
+static struct devlink_rate *
+devlink_rate_node_get_from_attrs(struct devlink *devlink, struct nlattr **attrs)
+{
+ const char *rate_node_name;
+ size_t len;
+
+ if (!attrs[DEVLINK_ATTR_RATE_NODE_NAME])
+ return ERR_PTR(-EINVAL);
+ rate_node_name = nla_data(attrs[DEVLINK_ATTR_RATE_NODE_NAME]);
+ len = strlen(rate_node_name);
+ /* Name cannot be empty or decimal number */
+ if (!len || strspn(rate_node_name, "0123456789") == len)
+ return ERR_PTR(-EINVAL);
+
+ return devlink_rate_node_get_by_name(devlink, rate_node_name);
+}
+
+static struct devlink_rate *
+devlink_rate_node_get_from_info(struct devlink *devlink, struct genl_info *info)
+{
+ return devlink_rate_node_get_from_attrs(devlink, info->attrs);
+}
+
+static struct devlink_rate *
+devlink_rate_get_from_info(struct devlink *devlink, struct genl_info *info)
+{
+ struct nlattr **attrs = info->attrs;
+
+ if (attrs[DEVLINK_ATTR_PORT_INDEX])
+ return devlink_rate_leaf_get_from_info(devlink, info);
+ else if (attrs[DEVLINK_ATTR_RATE_NODE_NAME])
+ return devlink_rate_node_get_from_info(devlink, info);
+ else
+ return ERR_PTR(-EINVAL);
+}
+
+static int devlink_nl_rate_fill(struct sk_buff *msg,
+ struct devlink_rate *devlink_rate,
+ enum devlink_command cmd, u32 portid, u32 seq,
+ int flags, struct netlink_ext_ack *extack)
+{
+ struct devlink *devlink = devlink_rate->devlink;
+ void *hdr;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_u16(msg, DEVLINK_ATTR_RATE_TYPE, devlink_rate->type))
+ goto nla_put_failure;
+
+ if (devlink_rate_is_leaf(devlink_rate)) {
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
+ devlink_rate->devlink_port->index))
+ goto nla_put_failure;
+ } else if (devlink_rate_is_node(devlink_rate)) {
+ if (nla_put_string(msg, DEVLINK_ATTR_RATE_NODE_NAME,
+ devlink_rate->name))
+ goto nla_put_failure;
+ }
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_SHARE,
+ devlink_rate->tx_share, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_RATE_TX_MAX,
+ devlink_rate->tx_max, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u32(msg, DEVLINK_ATTR_RATE_TX_PRIORITY,
+ devlink_rate->tx_priority))
+ goto nla_put_failure;
+
+ if (nla_put_u32(msg, DEVLINK_ATTR_RATE_TX_WEIGHT,
+ devlink_rate->tx_weight))
+ goto nla_put_failure;
+
+ if (devlink_rate->parent)
+ if (nla_put_string(msg, DEVLINK_ATTR_RATE_PARENT_NODE_NAME,
+ devlink_rate->parent->name))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void devlink_rate_notify(struct devlink_rate *devlink_rate,
+ enum devlink_command cmd)
+{
+ struct devlink *devlink = devlink_rate->devlink;
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_RATE_NEW && cmd != DEVLINK_CMD_RATE_DEL);
+
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_rate_fill(msg, devlink_rate, cmd, 0, 0, 0, NULL);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
+ 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+void devlink_rates_notify_register(struct devlink *devlink)
+{
+ struct devlink_rate *rate_node;
+
+ list_for_each_entry(rate_node, &devlink->rate_list, list)
+ devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
+}
+
+void devlink_rates_notify_unregister(struct devlink *devlink)
+{
+ struct devlink_rate *rate_node;
+
+ list_for_each_entry_reverse(rate_node, &devlink->rate_list, list)
+ devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
+}
+
+static int
+devlink_nl_rate_get_dump_one(struct sk_buff *msg, struct devlink *devlink,
+ struct netlink_callback *cb, int flags)
+{
+ struct devlink_nl_dump_state *state = devlink_dump_state(cb);
+ struct devlink_rate *devlink_rate;
+ int idx = 0;
+ int err = 0;
+
+ list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
+ enum devlink_command cmd = DEVLINK_CMD_RATE_NEW;
+ u32 id = NETLINK_CB(cb->skb).portid;
+
+ if (idx < state->idx) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_rate_fill(msg, devlink_rate, cmd, id,
+ cb->nlh->nlmsg_seq, flags, NULL);
+ if (err) {
+ state->idx = idx;
+ break;
+ }
+ idx++;
+ }
+
+ return err;
+}
+
+int devlink_nl_rate_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ return devlink_nl_dumpit(skb, cb, devlink_nl_rate_get_dump_one);
+}
+
+int devlink_nl_rate_get_doit(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_rate *devlink_rate;
+ struct sk_buff *msg;
+ int err;
+
+ devlink_rate = devlink_rate_get_from_info(devlink, info);
+ if (IS_ERR(devlink_rate))
+ return PTR_ERR(devlink_rate);
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_rate_fill(msg, devlink_rate, DEVLINK_CMD_RATE_NEW,
+ info->snd_portid, info->snd_seq, 0,
+ info->extack);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static bool
+devlink_rate_is_parent_node(struct devlink_rate *devlink_rate,
+ struct devlink_rate *parent)
+{
+ while (parent) {
+ if (parent == devlink_rate)
+ return true;
+ parent = parent->parent;
+ }
+ return false;
+}
+
+static int
+devlink_nl_rate_parent_node_set(struct devlink_rate *devlink_rate,
+ struct genl_info *info,
+ struct nlattr *nla_parent)
+{
+ struct devlink *devlink = devlink_rate->devlink;
+ const char *parent_name = nla_data(nla_parent);
+ const struct devlink_ops *ops = devlink->ops;
+ size_t len = strlen(parent_name);
+ struct devlink_rate *parent;
+ int err = -EOPNOTSUPP;
+
+ parent = devlink_rate->parent;
+
+ if (parent && !len) {
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_parent_set(devlink_rate, NULL,
+ devlink_rate->priv, NULL,
+ info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_parent_set(devlink_rate, NULL,
+ devlink_rate->priv, NULL,
+ info->extack);
+ if (err)
+ return err;
+
+ refcount_dec(&parent->refcnt);
+ devlink_rate->parent = NULL;
+ } else if (len) {
+ parent = devlink_rate_node_get_by_name(devlink, parent_name);
+ if (IS_ERR(parent))
+ return -ENODEV;
+
+ if (parent == devlink_rate) {
+ NL_SET_ERR_MSG(info->extack, "Parent to self is not allowed");
+ return -EINVAL;
+ }
+
+ if (devlink_rate_is_node(devlink_rate) &&
+ devlink_rate_is_parent_node(devlink_rate, parent->parent)) {
+ NL_SET_ERR_MSG(info->extack, "Node is already a parent of parent node.");
+ return -EEXIST;
+ }
+
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_parent_set(devlink_rate, parent,
+ devlink_rate->priv, parent->priv,
+ info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_parent_set(devlink_rate, parent,
+ devlink_rate->priv, parent->priv,
+ info->extack);
+ if (err)
+ return err;
+
+ if (devlink_rate->parent)
+ /* we're reassigning to other parent in this case */
+ refcount_dec(&devlink_rate->parent->refcnt);
+
+ refcount_inc(&parent->refcnt);
+ devlink_rate->parent = parent;
+ }
+
+ return 0;
+}
+
+static int devlink_nl_rate_set(struct devlink_rate *devlink_rate,
+ const struct devlink_ops *ops,
+ struct genl_info *info)
+{
+ struct nlattr *nla_parent, **attrs = info->attrs;
+ int err = -EOPNOTSUPP;
+ u32 priority;
+ u32 weight;
+ u64 rate;
+
+ if (attrs[DEVLINK_ATTR_RATE_TX_SHARE]) {
+ rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_SHARE]);
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_tx_share_set(devlink_rate, devlink_rate->priv,
+ rate, info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_tx_share_set(devlink_rate, devlink_rate->priv,
+ rate, info->extack);
+ if (err)
+ return err;
+ devlink_rate->tx_share = rate;
+ }
+
+ if (attrs[DEVLINK_ATTR_RATE_TX_MAX]) {
+ rate = nla_get_u64(attrs[DEVLINK_ATTR_RATE_TX_MAX]);
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_tx_max_set(devlink_rate, devlink_rate->priv,
+ rate, info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_tx_max_set(devlink_rate, devlink_rate->priv,
+ rate, info->extack);
+ if (err)
+ return err;
+ devlink_rate->tx_max = rate;
+ }
+
+ if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY]) {
+ priority = nla_get_u32(attrs[DEVLINK_ATTR_RATE_TX_PRIORITY]);
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_tx_priority_set(devlink_rate, devlink_rate->priv,
+ priority, info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_tx_priority_set(devlink_rate, devlink_rate->priv,
+ priority, info->extack);
+
+ if (err)
+ return err;
+ devlink_rate->tx_priority = priority;
+ }
+
+ if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT]) {
+ weight = nla_get_u32(attrs[DEVLINK_ATTR_RATE_TX_WEIGHT]);
+ if (devlink_rate_is_leaf(devlink_rate))
+ err = ops->rate_leaf_tx_weight_set(devlink_rate, devlink_rate->priv,
+ weight, info->extack);
+ else if (devlink_rate_is_node(devlink_rate))
+ err = ops->rate_node_tx_weight_set(devlink_rate, devlink_rate->priv,
+ weight, info->extack);
+
+ if (err)
+ return err;
+ devlink_rate->tx_weight = weight;
+ }
+
+ nla_parent = attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME];
+ if (nla_parent) {
+ err = devlink_nl_rate_parent_node_set(devlink_rate, info,
+ nla_parent);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static bool devlink_rate_set_ops_supported(const struct devlink_ops *ops,
+ struct genl_info *info,
+ enum devlink_rate_type type)
+{
+ struct nlattr **attrs = info->attrs;
+
+ if (type == DEVLINK_RATE_TYPE_LEAF) {
+ if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_leaf_tx_share_set) {
+ NL_SET_ERR_MSG(info->extack, "TX share set isn't supported for the leafs");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_leaf_tx_max_set) {
+ NL_SET_ERR_MSG(info->extack, "TX max set isn't supported for the leafs");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
+ !ops->rate_leaf_parent_set) {
+ NL_SET_ERR_MSG(info->extack, "Parent set isn't supported for the leafs");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY] && !ops->rate_leaf_tx_priority_set) {
+ NL_SET_ERR_MSG_ATTR(info->extack,
+ attrs[DEVLINK_ATTR_RATE_TX_PRIORITY],
+ "TX priority set isn't supported for the leafs");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT] && !ops->rate_leaf_tx_weight_set) {
+ NL_SET_ERR_MSG_ATTR(info->extack,
+ attrs[DEVLINK_ATTR_RATE_TX_WEIGHT],
+ "TX weight set isn't supported for the leafs");
+ return false;
+ }
+ } else if (type == DEVLINK_RATE_TYPE_NODE) {
+ if (attrs[DEVLINK_ATTR_RATE_TX_SHARE] && !ops->rate_node_tx_share_set) {
+ NL_SET_ERR_MSG(info->extack, "TX share set isn't supported for the nodes");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_TX_MAX] && !ops->rate_node_tx_max_set) {
+ NL_SET_ERR_MSG(info->extack, "TX max set isn't supported for the nodes");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_PARENT_NODE_NAME] &&
+ !ops->rate_node_parent_set) {
+ NL_SET_ERR_MSG(info->extack, "Parent set isn't supported for the nodes");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_TX_PRIORITY] && !ops->rate_node_tx_priority_set) {
+ NL_SET_ERR_MSG_ATTR(info->extack,
+ attrs[DEVLINK_ATTR_RATE_TX_PRIORITY],
+ "TX priority set isn't supported for the nodes");
+ return false;
+ }
+ if (attrs[DEVLINK_ATTR_RATE_TX_WEIGHT] && !ops->rate_node_tx_weight_set) {
+ NL_SET_ERR_MSG_ATTR(info->extack,
+ attrs[DEVLINK_ATTR_RATE_TX_WEIGHT],
+ "TX weight set isn't supported for the nodes");
+ return false;
+ }
+ } else {
+ WARN(1, "Unknown type of rate object");
+ return false;
+ }
+
+ return true;
+}
+
+int devlink_nl_cmd_rate_set_doit(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_rate *devlink_rate;
+ const struct devlink_ops *ops;
+ int err;
+
+ devlink_rate = devlink_rate_get_from_info(devlink, info);
+ if (IS_ERR(devlink_rate))
+ return PTR_ERR(devlink_rate);
+
+ ops = devlink->ops;
+ if (!ops || !devlink_rate_set_ops_supported(ops, info, devlink_rate->type))
+ return -EOPNOTSUPP;
+
+ err = devlink_nl_rate_set(devlink_rate, ops, info);
+
+ if (!err)
+ devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
+ return err;
+}
+
+int devlink_nl_cmd_rate_new_doit(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_rate *rate_node;
+ const struct devlink_ops *ops;
+ int err;
+
+ ops = devlink->ops;
+ if (!ops || !ops->rate_node_new || !ops->rate_node_del) {
+ NL_SET_ERR_MSG(info->extack, "Rate nodes aren't supported");
+ return -EOPNOTSUPP;
+ }
+
+ if (!devlink_rate_set_ops_supported(ops, info, DEVLINK_RATE_TYPE_NODE))
+ return -EOPNOTSUPP;
+
+ rate_node = devlink_rate_node_get_from_attrs(devlink, info->attrs);
+ if (!IS_ERR(rate_node))
+ return -EEXIST;
+ else if (rate_node == ERR_PTR(-EINVAL))
+ return -EINVAL;
+
+ rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL);
+ if (!rate_node)
+ return -ENOMEM;
+
+ rate_node->devlink = devlink;
+ rate_node->type = DEVLINK_RATE_TYPE_NODE;
+ rate_node->name = nla_strdup(info->attrs[DEVLINK_ATTR_RATE_NODE_NAME], GFP_KERNEL);
+ if (!rate_node->name) {
+ err = -ENOMEM;
+ goto err_strdup;
+ }
+
+ err = ops->rate_node_new(rate_node, &rate_node->priv, info->extack);
+ if (err)
+ goto err_node_new;
+
+ err = devlink_nl_rate_set(rate_node, ops, info);
+ if (err)
+ goto err_rate_set;
+
+ refcount_set(&rate_node->refcnt, 1);
+ list_add(&rate_node->list, &devlink->rate_list);
+ devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
+ return 0;
+
+err_rate_set:
+ ops->rate_node_del(rate_node, rate_node->priv, info->extack);
+err_node_new:
+ kfree(rate_node->name);
+err_strdup:
+ kfree(rate_node);
+ return err;
+}
+
+int devlink_nl_cmd_rate_del_doit(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_rate *rate_node;
+ int err;
+
+ rate_node = devlink_rate_node_get_from_info(devlink, info);
+ if (IS_ERR(rate_node))
+ return PTR_ERR(rate_node);
+
+ if (refcount_read(&rate_node->refcnt) > 1) {
+ NL_SET_ERR_MSG(info->extack, "Node has children. Cannot delete node.");
+ return -EBUSY;
+ }
+
+ devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_DEL);
+ err = devlink->ops->rate_node_del(rate_node, rate_node->priv,
+ info->extack);
+ if (rate_node->parent)
+ refcount_dec(&rate_node->parent->refcnt);
+ list_del(&rate_node->list);
+ kfree(rate_node->name);
+ kfree(rate_node);
+ return err;
+}
+
+int devlink_rate_nodes_check(struct devlink *devlink, u16 mode,
+ struct netlink_ext_ack *extack)
+{
+ struct devlink_rate *devlink_rate;
+
+ list_for_each_entry(devlink_rate, &devlink->rate_list, list)
+ if (devlink_rate_is_node(devlink_rate)) {
+ NL_SET_ERR_MSG(extack, "Rate node(s) exists.");
+ return -EBUSY;
+ }
+ return 0;
+}
+
+/**
+ * devl_rate_node_create - create devlink rate node
+ * @devlink: devlink instance
+ * @priv: driver private data
+ * @node_name: name of the resulting node
+ * @parent: parent devlink_rate struct
+ *
+ * Create devlink rate object of type node
+ */
+struct devlink_rate *
+devl_rate_node_create(struct devlink *devlink, void *priv, char *node_name,
+ struct devlink_rate *parent)
+{
+ struct devlink_rate *rate_node;
+
+ rate_node = devlink_rate_node_get_by_name(devlink, node_name);
+ if (!IS_ERR(rate_node))
+ return ERR_PTR(-EEXIST);
+
+ rate_node = kzalloc(sizeof(*rate_node), GFP_KERNEL);
+ if (!rate_node)
+ return ERR_PTR(-ENOMEM);
+
+ if (parent) {
+ rate_node->parent = parent;
+ refcount_inc(&rate_node->parent->refcnt);
+ }
+
+ rate_node->type = DEVLINK_RATE_TYPE_NODE;
+ rate_node->devlink = devlink;
+ rate_node->priv = priv;
+
+ rate_node->name = kstrdup(node_name, GFP_KERNEL);
+ if (!rate_node->name) {
+ kfree(rate_node);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ refcount_set(&rate_node->refcnt, 1);
+ list_add(&rate_node->list, &devlink->rate_list);
+ devlink_rate_notify(rate_node, DEVLINK_CMD_RATE_NEW);
+ return rate_node;
+}
+EXPORT_SYMBOL_GPL(devl_rate_node_create);
+
+/**
+ * devl_rate_leaf_create - create devlink rate leaf
+ * @devlink_port: devlink port object to create rate object on
+ * @priv: driver private data
+ * @parent: parent devlink_rate struct
+ *
+ * Create devlink rate object of type leaf on provided @devlink_port.
+ */
+int devl_rate_leaf_create(struct devlink_port *devlink_port, void *priv,
+ struct devlink_rate *parent)
+{
+ struct devlink *devlink = devlink_port->devlink;
+ struct devlink_rate *devlink_rate;
+
+ devl_assert_locked(devlink_port->devlink);
+
+ if (WARN_ON(devlink_port->devlink_rate))
+ return -EBUSY;
+
+ devlink_rate = kzalloc(sizeof(*devlink_rate), GFP_KERNEL);
+ if (!devlink_rate)
+ return -ENOMEM;
+
+ if (parent) {
+ devlink_rate->parent = parent;
+ refcount_inc(&devlink_rate->parent->refcnt);
+ }
+
+ devlink_rate->type = DEVLINK_RATE_TYPE_LEAF;
+ devlink_rate->devlink = devlink;
+ devlink_rate->devlink_port = devlink_port;
+ devlink_rate->priv = priv;
+ list_add_tail(&devlink_rate->list, &devlink->rate_list);
+ devlink_port->devlink_rate = devlink_rate;
+ devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_NEW);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devl_rate_leaf_create);
+
+/**
+ * devl_rate_leaf_destroy - destroy devlink rate leaf
+ *
+ * @devlink_port: devlink port linked to the rate object
+ *
+ * Destroy the devlink rate object of type leaf on provided @devlink_port.
+ */
+void devl_rate_leaf_destroy(struct devlink_port *devlink_port)
+{
+ struct devlink_rate *devlink_rate = devlink_port->devlink_rate;
+
+ devl_assert_locked(devlink_port->devlink);
+ if (!devlink_rate)
+ return;
+
+ devlink_rate_notify(devlink_rate, DEVLINK_CMD_RATE_DEL);
+ if (devlink_rate->parent)
+ refcount_dec(&devlink_rate->parent->refcnt);
+ list_del(&devlink_rate->list);
+ devlink_port->devlink_rate = NULL;
+ kfree(devlink_rate);
+}
+EXPORT_SYMBOL_GPL(devl_rate_leaf_destroy);
+
+/**
+ * devl_rate_nodes_destroy - destroy all devlink rate nodes on device
+ * @devlink: devlink instance
+ *
+ * Unset parent for all rate objects and destroy all rate nodes
+ * on specified device.
+ */
+void devl_rate_nodes_destroy(struct devlink *devlink)
+{
+ static struct devlink_rate *devlink_rate, *tmp;
+ const struct devlink_ops *ops = devlink->ops;
+
+ devl_assert_locked(devlink);
+
+ list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
+ if (!devlink_rate->parent)
+ continue;
+
+ refcount_dec(&devlink_rate->parent->refcnt);
+ if (devlink_rate_is_leaf(devlink_rate))
+ ops->rate_leaf_parent_set(devlink_rate, NULL, devlink_rate->priv,
+ NULL, NULL);
+ else if (devlink_rate_is_node(devlink_rate))
+ ops->rate_node_parent_set(devlink_rate, NULL, devlink_rate->priv,
+ NULL, NULL);
+ }
+ list_for_each_entry_safe(devlink_rate, tmp, &devlink->rate_list, list) {
+ if (devlink_rate_is_node(devlink_rate)) {
+ ops->rate_node_del(devlink_rate, devlink_rate->priv, NULL);
+ list_del(&devlink_rate->list);
+ kfree(devlink_rate->name);
+ kfree(devlink_rate);
+ }
+ }
+}
+EXPORT_SYMBOL_GPL(devl_rate_nodes_destroy);
projects / linux-2.6-block.git / commitdiff