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Message-ID: <20131216004158.13453.63053.stgit@monster-03.cumulusnetworks.com>
Date: Sun, 15 Dec 2013 16:41:58 -0800
From: Scott Feldman <sfeldma@...ulusnetworks.com>
To: vfalico@...hat.com, fubar@...ibm.com, andy@...yhouse.net
Cc: netdev@...r.kernel.org, roopa@...ulusnetworks.com,
shm@...ulusnetworks.com
Subject: [PATCH net-next 2/5] bonding: add primary_select attribute netlink
support
Add IFLA_BOND_PRIMARY_SELECT to allow get/set of bonding parameter
primary_select via netlink.
Signed-off-by: Scott Feldman <sfeldma@...ulusnetworks.com>
---
drivers/net/bonding/bond_netlink.c | 14 ++++++++++++++
drivers/net/bonding/bond_options.c | 16 ++++++++++++++++
drivers/net/bonding/bond_sysfs.c | 24 ++++++++----------------
drivers/net/bonding/bonding.h | 2 ++
include/uapi/linux/if_link.h | 1 +
5 files changed, 41 insertions(+), 16 deletions(-)
diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index 4715b5f..9d11e43 100644
--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -33,6 +33,7 @@ static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
[IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 },
[IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 },
[IFLA_BOND_PRIMARY] = { .type = NLA_U32 },
+ [IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 },
};
static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
@@ -168,6 +169,14 @@ static int bond_changelink(struct net_device *bond_dev,
if (err)
return err;
}
+ if (data[IFLA_BOND_PRIMARY_RESELECT]) {
+ int primary_reselect =
+ nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]);
+
+ err = bond_option_primary_reselect_set(bond, primary_reselect);
+ if (err)
+ return err;
+ }
return 0;
}
@@ -197,6 +206,7 @@ static size_t bond_get_size(const struct net_device *bond_dev)
nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */
+ nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */
0;
}
@@ -261,6 +271,10 @@ static int bond_fill_info(struct sk_buff *skb,
bond->primary_slave->dev->ifindex))
goto nla_put_failure;
+ if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT,
+ bond->params.primary_reselect))
+ 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 c410d2d..80a9df4 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -519,3 +519,19 @@ out:
return err;
}
+
+int bond_option_primary_reselect_set(struct bonding *bond, int primary_reselect)
+{
+ bond->params.primary_reselect = primary_reselect;
+ pr_info("%s: setting primary_reselect to %s (%d).\n",
+ bond->dev->name, pri_reselect_tbl[primary_reselect].modename,
+ primary_reselect);
+
+ block_netpoll_tx();
+ write_lock_bh(&bond->curr_slave_lock);
+ bond_select_active_slave(bond);
+ write_unlock_bh(&bond->curr_slave_lock);
+ unblock_netpoll_tx();
+
+ return 0;
+}
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 7304c2b..324afa5 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -909,32 +909,24 @@ static ssize_t bonding_store_primary_reselect(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();
-
new_value = bond_parse_parm(buf, pri_reselect_tbl);
if (new_value < 0) {
pr_err("%s: Ignoring invalid primary_reselect value %.*s.\n",
bond->dev->name,
(int) strlen(buf) - 1, buf);
- ret = -EINVAL;
- goto out;
+ return -EINVAL;
}
- bond->params.primary_reselect = new_value;
- pr_info("%s: setting primary_reselect to %s (%d).\n",
- bond->dev->name, pri_reselect_tbl[new_value].modename,
- new_value);
+ if (!rtnl_trylock())
+ return restart_syscall();
+
+ ret = bond_option_primary_reselect_set(bond, new_value);
+ if (!ret)
+ ret = count;
- block_netpoll_tx();
- write_lock_bh(&bond->curr_slave_lock);
- bond_select_active_slave(bond);
- write_unlock_bh(&bond->curr_slave_lock);
- unblock_netpoll_tx();
-out:
rtnl_unlock();
return ret;
}
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index ec35802..4e89d04 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -455,6 +455,8 @@ int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target);
int bond_option_arp_validate_set(struct bonding *bond, int arp_validate);
int bond_option_arp_all_targets_set(struct bonding *bond, int arp_all_targets);
int bond_option_primary_set(struct bonding *bond, const char *primary);
+int bond_option_primary_reselect_set(struct bonding *bond,
+ int primary_reselect);
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 fb3cfe2..cf59d54 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -340,6 +340,7 @@ enum {
IFLA_BOND_ARP_VALIDATE,
IFLA_BOND_ARP_ALL_TARGETS,
IFLA_BOND_PRIMARY,
+ IFLA_BOND_PRIMARY_RESELECT,
__IFLA_BOND_MAX,
};
--
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