diff options
| -rw-r--r-- | drivers/net/bonding/bond_netlink.c | 21 | ||||
| -rw-r--r-- | drivers/net/bonding/bond_options.c | 23 | ||||
| -rw-r--r-- | drivers/net/bonding/bond_sysfs.c | 28 | ||||
| -rw-r--r-- | drivers/net/bonding/bonding.h | 2 | ||||
| -rw-r--r-- | include/uapi/linux/if_link.h | 1 |
5 files changed, 58 insertions, 17 deletions
diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c index 6c8339bec1bf..84acd144d075 100644 --- a/drivers/net/bonding/bond_netlink.c +++ b/drivers/net/bonding/bond_netlink.c @@ -19,6 +19,7 @@ #include <linux/if_ether.h> #include <net/netlink.h> #include <net/rtnetlink.h> +#include <linux/reciprocal_div.h> #include "bonding.h" static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = { @@ -41,6 +42,7 @@ static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = { [IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 }, [IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 }, [IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 }, + [IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 }, }; static int bond_validate(struct nlattr *tb[], struct nlattr *data[]) @@ -241,6 +243,15 @@ static int bond_changelink(struct net_device *bond_dev, if (err) return err; } + if (data[IFLA_BOND_PACKETS_PER_SLAVE]) { + int packets_per_slave = + nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]); + + err = bond_option_packets_per_slave_set(bond, + packets_per_slave); + if (err) + return err; + } return 0; } @@ -278,6 +289,7 @@ static size_t bond_get_size(const struct net_device *bond_dev) nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */ nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */ nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */ + nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */ 0; } @@ -287,6 +299,7 @@ static int bond_fill_info(struct sk_buff *skb, struct bonding *bond = netdev_priv(bond_dev); struct net_device *slave_dev = bond_option_active_slave_get(bond); struct nlattr *targets; + unsigned int packets_per_slave; int i, targets_added; if (nla_put_u8(skb, IFLA_BOND_MODE, bond->params.mode)) @@ -374,6 +387,14 @@ static int bond_fill_info(struct sk_buff *skb, bond->params.lp_interval)) goto nla_put_failure; + packets_per_slave = bond->params.packets_per_slave; + if (packets_per_slave > 1) + packets_per_slave = reciprocal_value(packets_per_slave); + + if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE, + packets_per_slave)) + goto nla_put_failure; + return 0; nla_put_failure: diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c index e313a8f8fae0..f8a2cd8c7b57 100644 --- a/drivers/net/bonding/bond_options.c +++ b/drivers/net/bonding/bond_options.c @@ -16,6 +16,7 @@ #include <linux/netdevice.h> #include <linux/rwlock.h> #include <linux/rcupdate.h> +#include <linux/reciprocal_div.h> #include "bonding.h" static bool bond_mode_is_valid(int mode) @@ -633,3 +634,25 @@ int bond_option_lp_interval_set(struct bonding *bond, int lp_interval) return 0; } + +int bond_option_packets_per_slave_set(struct bonding *bond, + int packets_per_slave) +{ + if (packets_per_slave < 0 || packets_per_slave > USHRT_MAX) { + pr_err("%s: packets_per_slave must be between 0 and %u\n", + bond->dev->name, USHRT_MAX); + return -EINVAL; + } + + if (bond->params.mode != BOND_MODE_ROUNDROBIN) + pr_warn("%s: Warning: packets_per_slave has effect only in balance-rr mode\n", + bond->dev->name); + + if (packets_per_slave > 1) + bond->params.packets_per_slave = + reciprocal_value(packets_per_slave); + else + bond->params.packets_per_slave = packets_per_slave; + + return 0; +} diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c index c4cdbf6469ae..a0a3476fadba 100644 --- a/drivers/net/bonding/bond_sysfs.c +++ b/drivers/net/bonding/bond_sysfs.c @@ -1409,28 +1409,22 @@ static ssize_t bonding_store_packets_per_slave(struct device *d, const char *buf, size_t count) { struct bonding *bond = to_bond(d); - int new_value, ret = count; + int new_value, ret; if (sscanf(buf, "%d", &new_value) != 1) { pr_err("%s: no packets_per_slave value specified.\n", bond->dev->name); - ret = -EINVAL; - goto out; - } - if (new_value < 0 || new_value > USHRT_MAX) { - pr_err("%s: packets_per_slave must be between 0 and %u\n", - bond->dev->name, USHRT_MAX); - ret = -EINVAL; - goto out; + return -EINVAL; } - if (bond->params.mode != BOND_MODE_ROUNDROBIN) - pr_warn("%s: Warning: packets_per_slave has effect only in balance-rr mode\n", - bond->dev->name); - if (new_value > 1) - bond->params.packets_per_slave = reciprocal_value(new_value); - else - bond->params.packets_per_slave = new_value; -out: + + if (!rtnl_trylock()) + return restart_syscall(); + + ret = bond_option_packets_per_slave_set(bond, new_value); + if (!ret) + ret = count; + + rtnl_unlock(); return ret; } diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h index 0a1a69e001a4..5886f07dc1f3 100644 --- a/drivers/net/bonding/bonding.h +++ b/drivers/net/bonding/bonding.h @@ -466,6 +466,8 @@ int bond_option_all_slaves_active_set(struct bonding *bond, int all_slaves_active); int bond_option_min_links_set(struct bonding *bond, int min_links); int bond_option_lp_interval_set(struct bonding *bond, int min_links); +int bond_option_packets_per_slave_set(struct bonding *bond, + int packets_per_slave); struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond); struct net_device *bond_option_active_slave_get(struct bonding *bond); diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h index 4825ae74f1aa..8fbc7ca878b4 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -348,6 +348,7 @@ enum { IFLA_BOND_ALL_SLAVES_ACTIVE, IFLA_BOND_MIN_LINKS, IFLA_BOND_LP_INTERVAL, + IFLA_BOND_PACKETS_PER_SLAVE, __IFLA_BOND_MAX, }; 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