From c7461f9bf5a11bf88fdbd05b26c6d55b77dcd46d Mon Sep 17 00:00:00 2001 From: "sfeldma@cumulusnetworks.com" Date: Thu, 12 Dec 2013 14:10:09 -0800 Subject: [PATCH] bonding: add downdelay netlink support Add IFLA_BOND_DOWNDELAY to allow get/set of bonding parameter downdelay via netlink. Signed-off-by: Scott Feldman Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/bonding/bond_netlink.c | 13 ++++++++++ drivers/net/bonding/bond_options.c | 29 ++++++++++++++++++++++ drivers/net/bonding/bond_sysfs.c | 39 ++++++------------------------ drivers/net/bonding/bonding.h | 1 + include/uapi/linux/if_link.h | 1 + 5 files changed, 52 insertions(+), 31 deletions(-) diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c index 086cf4f5f0a6..a0a2e8c32fe5 100644 --- a/drivers/net/bonding/bond_netlink.c +++ b/drivers/net/bonding/bond_netlink.c @@ -26,6 +26,7 @@ static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = { [IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 }, [IFLA_BOND_MIIMON] = { .type = NLA_U32 }, [IFLA_BOND_UPDELAY] = { .type = NLA_U32 }, + [IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 }, }; static int bond_validate(struct nlattr *tb[], struct nlattr *data[]) @@ -85,6 +86,13 @@ static int bond_changelink(struct net_device *bond_dev, if (err) return err; } + if (data[IFLA_BOND_DOWNDELAY]) { + int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]); + + err = bond_option_downdelay_set(bond, downdelay); + if (err) + return err; + } return 0; } @@ -106,6 +114,7 @@ static size_t bond_get_size(const struct net_device *bond_dev) nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */ nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */ nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */ + nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */ 0; } @@ -129,6 +138,10 @@ static int bond_fill_info(struct sk_buff *skb, bond->params.updelay * bond->params.miimon)) goto nla_put_failure; + if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY, + bond->params.downdelay * bond->params.miimon)) + 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 ae94b847ffcc..2914d649ee34 100644 --- a/drivers/net/bonding/bond_options.c +++ b/drivers/net/bonding/bond_options.c @@ -216,3 +216,32 @@ int bond_option_updelay_set(struct bonding *bond, int updelay) return 0; } + +int bond_option_downdelay_set(struct bonding *bond, int downdelay) +{ + if (!(bond->params.miimon)) { + pr_err("%s: Unable to set down delay as MII monitoring is disabled\n", + bond->dev->name); + return -EPERM; + } + + if (downdelay < 0) { + pr_err("%s: Invalid down delay value %d not in range %d-%d; rejected.\n", + bond->dev->name, downdelay, 0, INT_MAX); + return -EINVAL; + } else { + if ((downdelay % bond->params.miimon) != 0) { + pr_warn("%s: Warning: down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n", + bond->dev->name, downdelay, + bond->params.miimon, + (downdelay / bond->params.miimon) * + bond->params.miimon); + } + bond->params.downdelay = downdelay / bond->params.miimon; + pr_info("%s: Setting down delay to %d.\n", + bond->dev->name, + bond->params.downdelay * bond->params.miimon); + } + + return 0; +} diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c index 4dcbec4e07c0..bec20bc08d31 100644 --- a/drivers/net/bonding/bond_sysfs.c +++ b/drivers/net/bonding/bond_sysfs.c @@ -689,44 +689,21 @@ static ssize_t bonding_store_downdelay(struct device *d, struct device_attribute *attr, const char *buf, size_t count) { - int new_value, ret = count; + int new_value, ret; struct bonding *bond = to_bond(d); - if (!rtnl_trylock()) - return restart_syscall(); - if (!(bond->params.miimon)) { - pr_err("%s: Unable to set down delay as MII monitoring is disabled\n", - bond->dev->name); - ret = -EPERM; - goto out; - } - if (sscanf(buf, "%d", &new_value) != 1) { pr_err("%s: no down delay value specified.\n", bond->dev->name); - ret = -EINVAL; - goto out; + return -EINVAL; } - if (new_value < 0) { - pr_err("%s: Invalid down delay value %d not in range %d-%d; rejected.\n", - bond->dev->name, new_value, 0, INT_MAX); - ret = -EINVAL; - goto out; - } else { - if ((new_value % bond->params.miimon) != 0) { - pr_warning("%s: Warning: down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n", - bond->dev->name, new_value, - bond->params.miimon, - (new_value / bond->params.miimon) * - bond->params.miimon); - } - bond->params.downdelay = new_value / bond->params.miimon; - pr_info("%s: Setting down delay to %d.\n", - bond->dev->name, - bond->params.downdelay * bond->params.miimon); - } + if (!rtnl_trylock()) + return restart_syscall(); + + ret = bond_option_downdelay_set(bond, new_value); + if (!ret) + ret = count; -out: rtnl_unlock(); return ret; } diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h index 8a91f7187e51..f5749b18d168 100644 --- a/drivers/net/bonding/bonding.h +++ b/drivers/net/bonding/bonding.h @@ -441,6 +441,7 @@ int bond_option_mode_set(struct bonding *bond, int mode); int bond_option_active_slave_set(struct bonding *bond, struct net_device *slave_dev); int bond_option_miimon_set(struct bonding *bond, int miimon); int bond_option_updelay_set(struct bonding *bond, int updelay); +int bond_option_downdelay_set(struct bonding *bond, int downdelay); 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 7588c8120e7f..f95506777710 100644 --- a/include/uapi/linux/if_link.h +++ b/include/uapi/linux/if_link.h @@ -333,6 +333,7 @@ enum { IFLA_BOND_ACTIVE_SLAVE, IFLA_BOND_MIIMON, IFLA_BOND_UPDELAY, + IFLA_BOND_DOWNDELAY, __IFLA_BOND_MAX, }; -- 2.20.1