diff options
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/net-sysfs.c | 141 | ||||
| -rw-r--r-- | net/core/netprio_cgroup.c | 72 |
2 files changed, 113 insertions, 100 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index 8826b0d..3f40ea9 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -60,12 +60,19 @@ static ssize_t format_##field(const struct net_device *net, char *buf) \ { \ return sprintf(buf, format_string, net->field); \ } \ -static ssize_t show_##field(struct device *dev, \ +static ssize_t field##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ return netdev_show(dev, attr, buf, format_##field); \ -} +} \ + +#define NETDEVICE_SHOW_RO(field, format_string) \ +NETDEVICE_SHOW(field, format_string); \ +static DEVICE_ATTR_RO(field) +#define NETDEVICE_SHOW_RW(field, format_string) \ +NETDEVICE_SHOW(field, format_string); \ +static DEVICE_ATTR_RW(field) /* use same locking and permission rules as SIF* ioctl's */ static ssize_t netdev_store(struct device *dev, struct device_attribute *attr, @@ -96,16 +103,16 @@ static ssize_t netdev_store(struct device *dev, struct device_attribute *attr, return ret; } -NETDEVICE_SHOW(dev_id, fmt_hex); -NETDEVICE_SHOW(addr_assign_type, fmt_dec); -NETDEVICE_SHOW(addr_len, fmt_dec); -NETDEVICE_SHOW(iflink, fmt_dec); -NETDEVICE_SHOW(ifindex, fmt_dec); -NETDEVICE_SHOW(type, fmt_dec); -NETDEVICE_SHOW(link_mode, fmt_dec); +NETDEVICE_SHOW_RO(dev_id, fmt_hex); +NETDEVICE_SHOW_RO(addr_assign_type, fmt_dec); +NETDEVICE_SHOW_RO(addr_len, fmt_dec); +NETDEVICE_SHOW_RO(iflink, fmt_dec); +NETDEVICE_SHOW_RO(ifindex, fmt_dec); +NETDEVICE_SHOW_RO(type, fmt_dec); +NETDEVICE_SHOW_RO(link_mode, fmt_dec); /* use same locking rules as GIFHWADDR ioctl's */ -static ssize_t show_address(struct device *dev, struct device_attribute *attr, +static ssize_t address_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *net = to_net_dev(dev); @@ -117,15 +124,17 @@ static ssize_t show_address(struct device *dev, struct device_attribute *attr, read_unlock(&dev_base_lock); return ret; } +static DEVICE_ATTR_RO(address); -static ssize_t show_broadcast(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t broadcast_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct net_device *net = to_net_dev(dev); if (dev_isalive(net)) return sysfs_format_mac(buf, net->broadcast, net->addr_len); return -EINVAL; } +static DEVICE_ATTR_RO(broadcast); static int change_carrier(struct net_device *net, unsigned long new_carrier) { @@ -134,13 +143,13 @@ static int change_carrier(struct net_device *net, unsigned long new_carrier) return dev_change_carrier(net, (bool) new_carrier); } -static ssize_t store_carrier(struct device *dev, struct device_attribute *attr, - const char *buf, size_t len) +static ssize_t carrier_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t len) { return netdev_store(dev, attr, buf, len, change_carrier); } -static ssize_t show_carrier(struct device *dev, +static ssize_t carrier_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *netdev = to_net_dev(dev); @@ -149,8 +158,9 @@ static ssize_t show_carrier(struct device *dev, } return -EINVAL; } +static DEVICE_ATTR_RW(carrier); -static ssize_t show_speed(struct device *dev, +static ssize_t speed_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *netdev = to_net_dev(dev); @@ -167,8 +177,9 @@ static ssize_t show_speed(struct device *dev, rtnl_unlock(); return ret; } +static DEVICE_ATTR_RO(speed); -static ssize_t show_duplex(struct device *dev, +static ssize_t duplex_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *netdev = to_net_dev(dev); @@ -198,8 +209,9 @@ static ssize_t show_duplex(struct device *dev, rtnl_unlock(); return ret; } +static DEVICE_ATTR_RO(duplex); -static ssize_t show_dormant(struct device *dev, +static ssize_t dormant_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *netdev = to_net_dev(dev); @@ -209,6 +221,7 @@ static ssize_t show_dormant(struct device *dev, return -EINVAL; } +static DEVICE_ATTR_RO(dormant); static const char *const operstates[] = { "unknown", @@ -220,7 +233,7 @@ static const char *const operstates[] = { "up" }; -static ssize_t show_operstate(struct device *dev, +static ssize_t operstate_show(struct device *dev, struct device_attribute *attr, char *buf) { const struct net_device *netdev = to_net_dev(dev); @@ -237,35 +250,33 @@ static ssize_t show_operstate(struct device *dev, return sprintf(buf, "%s\n", operstates[operstate]); } +static DEVICE_ATTR_RO(operstate); /* read-write attributes */ -NETDEVICE_SHOW(mtu, fmt_dec); static int change_mtu(struct net_device *net, unsigned long new_mtu) { return dev_set_mtu(net, (int) new_mtu); } -static ssize_t store_mtu(struct device *dev, struct device_attribute *attr, +static ssize_t mtu_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { return netdev_store(dev, attr, buf, len, change_mtu); } - -NETDEVICE_SHOW(flags, fmt_hex); +NETDEVICE_SHOW_RW(mtu, fmt_dec); static int change_flags(struct net_device *net, unsigned long new_flags) { return dev_change_flags(net, (unsigned int) new_flags); } -static ssize_t store_flags(struct device *dev, struct device_attribute *attr, +static ssize_t flags_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { return netdev_store(dev, attr, buf, len, change_flags); } - -NETDEVICE_SHOW(tx_queue_len, fmt_ulong); +NETDEVICE_SHOW_RW(flags, fmt_hex); static int change_tx_queue_len(struct net_device *net, unsigned long new_len) { @@ -273,7 +284,7 @@ static int change_tx_queue_len(struct net_device *net, unsigned long new_len) return 0; } -static ssize_t store_tx_queue_len(struct device *dev, +static ssize_t tx_queue_len_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { @@ -282,8 +293,9 @@ static ssize_t store_tx_queue_len(struct device *dev, return netdev_store(dev, attr, buf, len, change_tx_queue_len); } +NETDEVICE_SHOW_RW(tx_queue_len, fmt_ulong); -static ssize_t store_ifalias(struct device *dev, struct device_attribute *attr, +static ssize_t ifalias_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { struct net_device *netdev = to_net_dev(dev); @@ -306,7 +318,7 @@ static ssize_t store_ifalias(struct device *dev, struct device_attribute *attr, return ret < 0 ? ret : len; } -static ssize_t show_ifalias(struct device *dev, +static ssize_t ifalias_show(struct device *dev, struct device_attribute *attr, char *buf) { const struct net_device *netdev = to_net_dev(dev); @@ -319,8 +331,7 @@ static ssize_t show_ifalias(struct device *dev, rtnl_unlock(); return ret; } - -NETDEVICE_SHOW(group, fmt_dec); +static DEVICE_ATTR_RW(ifalias); static int change_group(struct net_device *net, unsigned long new_group) { @@ -328,13 +339,15 @@ static int change_group(struct net_device *net, unsigned long new_group) return 0; } -static ssize_t store_group(struct device *dev, struct device_attribute *attr, - const char *buf, size_t len) +static ssize_t group_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t len) { return netdev_store(dev, attr, buf, len, change_group); } +NETDEVICE_SHOW(group, fmt_dec); +static DEVICE_ATTR(netdev_group, S_IRUGO | S_IWUSR, group_show, group_store); -static ssize_t show_phys_port_id(struct device *dev, +static ssize_t phys_port_id_show(struct device *dev, struct device_attribute *attr, char *buf) { struct net_device *netdev = to_net_dev(dev); @@ -354,31 +367,32 @@ static ssize_t show_phys_port_id(struct device *dev, return ret; } - -static struct device_attribute net_class_attributes[] = { - __ATTR(addr_assign_type, S_IRUGO, show_addr_assign_type, NULL), - __ATTR(addr_len, S_IRUGO, show_addr_len, NULL), - __ATTR(dev_id, S_IRUGO, show_dev_id, NULL), - __ATTR(ifalias, S_IRUGO | S_IWUSR, show_ifalias, store_ifalias), - __ATTR(iflink, S_IRUGO, show_iflink, NULL), - __ATTR(ifindex, S_IRUGO, show_ifindex, NULL), - __ATTR(type, S_IRUGO, show_type, NULL), - __ATTR(link_mode, S_IRUGO, show_link_mode, NULL), - __ATTR(address, S_IRUGO, show_address, NULL), - __ATTR(broadcast, S_IRUGO, show_broadcast, NULL), - __ATTR(carrier, S_IRUGO | S_IWUSR, show_carrier, store_carrier), - __ATTR(speed, S_IRUGO, show_speed, NULL), - __ATTR(duplex, S_IRUGO, show_duplex, NULL), - __ATTR(dormant, S_IRUGO, show_dormant, NULL), - __ATTR(operstate, S_IRUGO, show_operstate, NULL), - __ATTR(mtu, S_IRUGO | S_IWUSR, show_mtu, store_mtu), - __ATTR(flags, S_IRUGO | S_IWUSR, show_flags, store_flags), - __ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len, - store_tx_queue_len), - __ATTR(netdev_group, S_IRUGO | S_IWUSR, show_group, store_group), - __ATTR(phys_port_id, S_IRUGO, show_phys_port_id, NULL), - {} +static DEVICE_ATTR_RO(phys_port_id); + +static struct attribute *net_class_attrs[] = { + &dev_attr_netdev_group.attr, + &dev_attr_type.attr, + &dev_attr_dev_id.attr, + &dev_attr_iflink.attr, + &dev_attr_ifindex.attr, + &dev_attr_addr_assign_type.attr, + &dev_attr_addr_len.attr, + &dev_attr_link_mode.attr, + &dev_attr_address.attr, + &dev_attr_broadcast.attr, + &dev_attr_speed.attr, + &dev_attr_duplex.attr, + &dev_attr_dormant.attr, + &dev_attr_operstate.attr, + &dev_attr_ifalias.attr, + &dev_attr_carrier.attr, + &dev_attr_mtu.attr, + &dev_attr_flags.attr, + &dev_attr_tx_queue_len.attr, + &dev_attr_phys_port_id.attr, + NULL, }; +ATTRIBUTE_GROUPS(net_class); /* Show a given an attribute in the statistics group */ static ssize_t netstat_show(const struct device *d, @@ -404,13 +418,13 @@ static ssize_t netstat_show(const struct device *d, /* generate a read-only statistics attribute */ #define NETSTAT_ENTRY(name) \ -static ssize_t show_##name(struct device *d, \ +static ssize_t name##_show(struct device *d, \ struct device_attribute *attr, char *buf) \ { \ return netstat_show(d, attr, buf, \ offsetof(struct rtnl_link_stats64, name)); \ } \ -static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL) +static DEVICE_ATTR_RO(name) NETSTAT_ENTRY(rx_packets); NETSTAT_ENTRY(tx_packets); @@ -479,6 +493,9 @@ static struct attribute_group wireless_group = { .attrs = wireless_attrs, }; #endif + +#else /* CONFIG_SYSFS */ +#define net_class_groups NULL #endif /* CONFIG_SYSFS */ #ifdef CONFIG_RPS @@ -1251,9 +1268,7 @@ static const void *net_namespace(struct device *d) static struct class net_class = { .name = "net", .dev_release = netdev_release, -#ifdef CONFIG_SYSFS - .dev_attrs = net_class_attributes, -#endif /* CONFIG_SYSFS */ + .dev_groups = net_class_groups, .dev_uevent = netdev_uevent, .ns_type = &net_ns_type_operations, .namespace = net_namespace, diff --git a/net/core/netprio_cgroup.c b/net/core/netprio_cgroup.c index e533259..d9cd627 100644 --- a/net/core/netprio_cgroup.c +++ b/net/core/netprio_cgroup.c @@ -29,12 +29,6 @@ #define PRIOMAP_MIN_SZ 128 -static inline struct cgroup_netprio_state *cgrp_netprio_state(struct cgroup *cgrp) -{ - return container_of(cgroup_subsys_state(cgrp, net_prio_subsys_id), - struct cgroup_netprio_state, css); -} - /* * Extend @dev->priomap so that it's large enough to accomodate * @target_idx. @dev->priomap.priomap_len > @target_idx after successful @@ -87,67 +81,70 @@ static int extend_netdev_table(struct net_device *dev, u32 target_idx) /** * netprio_prio - return the effective netprio of a cgroup-net_device pair - * @cgrp: cgroup part of the target pair + * @css: css part of the target pair * @dev: net_device part of the target pair * * Should be called under RCU read or rtnl lock. */ -static u32 netprio_prio(struct cgroup *cgrp, struct net_device *dev) +static u32 netprio_prio(struct cgroup_subsys_state *css, struct net_device *dev) { struct netprio_map *map = rcu_dereference_rtnl(dev->priomap); + int id = css->cgroup->id; - if (map && cgrp->id < map->priomap_len) - return map->priomap[cgrp->id]; + if (map && id < map->priomap_len) + return map->priomap[id]; return 0; } /** * netprio_set_prio - set netprio on a cgroup-net_device pair - * @cgrp: cgroup part of the target pair + * @css: css part of the target pair * @dev: net_device part of the target pair * @prio: prio to set * - * Set netprio to @prio on @cgrp-@dev pair. Should be called under rtnl + * Set netprio to @prio on @css-@dev pair. Should be called under rtnl * lock and may fail under memory pressure for non-zero @prio. */ -static int netprio_set_prio(struct cgroup *cgrp, struct net_device *dev, - u32 prio) +static int netprio_set_prio(struct cgroup_subsys_state *css, + struct net_device *dev, u32 prio) { struct netprio_map *map; + int id = css->cgroup->id; int ret; /* avoid extending priomap for zero writes */ map = rtnl_dereference(dev->priomap); - if (!prio && (!map || map->priomap_len <= cgrp->id)) + if (!prio && (!map || map->priomap_len <= id)) return 0; - ret = extend_netdev_table(dev, cgrp->id); + ret = extend_netdev_table(dev, id); if (ret) return ret; map = rtnl_dereference(dev->priomap); - map->priomap[cgrp->id] = prio; + map->priomap[id] = prio; return 0; } -static struct cgroup_subsys_state *cgrp_css_alloc(struct cgroup *cgrp) +static struct cgroup_subsys_state * +cgrp_css_alloc(struct cgroup_subsys_state *parent_css) { - struct cgroup_netprio_state *cs; + struct cgroup_subsys_state *css; - cs = kzalloc(sizeof(*cs), GFP_KERNEL); - if (!cs) + css = kzalloc(sizeof(*css), GFP_KERNEL); + if (!css) return ERR_PTR(-ENOMEM); - return &cs->css; + return css; } -static int cgrp_css_online(struct cgroup *cgrp) +static int cgrp_css_online(struct cgroup_subsys_state *css) { - struct cgroup *parent = cgrp->parent; + struct cgroup_subsys_state *parent_css = css_parent(css); struct net_device *dev; int ret = 0; - if (!parent) + if (!parent_css) return 0; rtnl_lock(); @@ -156,9 +153,9 @@ static int cgrp_css_online(struct cgroup *cgrp) * onlining, there is no need to clear them on offline. */ for_each_netdev(&init_net, dev) { - u32 prio = netprio_prio(parent, dev); + u32 prio = netprio_prio(parent_css, dev); - ret = netprio_set_prio(cgrp, dev, prio); + ret = netprio_set_prio(css, dev, prio); if (ret) break; } @@ -166,29 +163,29 @@ static int cgrp_css_online(struct cgroup *cgrp) return ret; } -static void cgrp_css_free(struct cgroup *cgrp) +static void cgrp_css_free(struct cgroup_subsys_state *css) { - kfree(cgrp_netprio_state(cgrp)); + kfree(css); } -static u64 read_prioidx(struct cgroup *cgrp, struct cftype *cft) +static u64 read_prioidx(struct cgroup_subsys_state *css, struct cftype *cft) { - return cgrp->id; + return css->cgroup->id; } -static int read_priomap(struct cgroup *cont, struct cftype *cft, +static int read_priomap(struct cgroup_subsys_state *css, struct cftype *cft, struct cgroup_map_cb *cb) { struct net_device *dev; rcu_read_lock(); for_each_netdev_rcu(&init_net, dev) - cb->fill(cb, dev->name, netprio_prio(cont, dev)); + cb->fill(cb, dev->name, netprio_prio(css, dev)); rcu_read_unlock(); return 0; } -static int write_priomap(struct cgroup *cgrp, struct cftype *cft, +static int write_priomap(struct cgroup_subsys_state *css, struct cftype *cft, const char *buffer) { char devname[IFNAMSIZ + 1]; @@ -205,7 +202,7 @@ static int write_priomap(struct cgroup *cgrp, struct cftype *cft, rtnl_lock(); - ret = netprio_set_prio(cgrp, dev, prio); + ret = netprio_set_prio(css, dev, prio); rtnl_unlock(); dev_put(dev); @@ -221,12 +218,13 @@ static int update_netprio(const void *v, struct file *file, unsigned n) return 0; } -static void net_prio_attach(struct cgroup *cgrp, struct cgroup_taskset *tset) +static void net_prio_attach(struct cgroup_subsys_state *css, + struct cgroup_taskset *tset) { struct task_struct *p; void *v; - cgroup_taskset_for_each(p, cgrp, tset) { + cgroup_taskset_for_each(p, css, tset) { task_lock(p); v = (void *)(unsigned long)task_netprioidx(p); iterate_fd(p->files, 0, update_netprio, v); |
