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Message-ID: <20131218053009.13529.4563.stgit@monster-03.cumulusnetworks.com>
Date: Tue, 17 Dec 2013 21:30:09 -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 1/5] bonding: add num_grat_arp attribute netlink
support
Add IFLA_BOND_NUM_PEER_NOTIF to allow get/set of bonding parameter
num_grat_arp via netlink. Bonding parameter num_unsol_na is
synonymous with num_grat_arp, so add only one netlink attribute
to represent both bonding parameters.
Signed-off-by: Scott Feldman <sfeldma@...ulusnetworks.com>
---
drivers/net/bonding/bond_netlink.c | 14 ++++++++++++++
drivers/net/bonding/bond_options.c | 6 ++++++
drivers/net/bonding/bond_sysfs.c | 21 +++++++++++++++++++--
drivers/net/bonding/bonding.h | 1 +
include/uapi/linux/if_link.h | 1 +
5 files changed, 41 insertions(+), 2 deletions(-)
diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index 428b394..4a79b01 100644
--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -37,6 +37,7 @@ static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
[IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 },
[IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 },
[IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 },
+ [IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 },
};
static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
@@ -204,6 +205,14 @@ static int bond_changelink(struct net_device *bond_dev,
if (err)
return err;
}
+ if (data[IFLA_BOND_NUM_PEER_NOTIF]) {
+ int num_peer_notif =
+ nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);
+
+ err = bond_option_num_peer_notif_set(bond, num_peer_notif);
+ if (err)
+ return err;
+ }
return 0;
}
@@ -237,6 +246,7 @@ static size_t bond_get_size(const struct net_device *bond_dev)
nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */
+ nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */
0;
}
@@ -317,6 +327,10 @@ static int bond_fill_info(struct sk_buff *skb,
bond->params.resend_igmp))
goto nla_put_failure;
+ if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
+ bond->params.num_peer_notif))
+ 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 1ed7dff..01a9669 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -576,3 +576,9 @@ int bond_option_resend_igmp_set(struct bonding *bond, int resend_igmp)
return 0;
}
+
+int bond_option_num_peer_notif_set(struct bonding *bond, int num_peer_notif)
+{
+ bond->params.num_peer_notif = num_peer_notif;
+ return 0;
+}
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index f5c1a54..7efa33a 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -790,8 +790,25 @@ static ssize_t bonding_store_num_peer_notif(struct device *d,
const char *buf, size_t count)
{
struct bonding *bond = to_bond(d);
- int err = kstrtou8(buf, 10, &bond->params.num_peer_notif);
- return err ? err : count;
+ u8 new_value;
+ int ret;
+
+ ret = kstrtou8(buf, 10, &new_value);
+ if (!ret) {
+ pr_err("%s: invalid value %s specified.\n",
+ bond->dev->name, buf);
+ return ret;
+ }
+
+ if (!rtnl_trylock())
+ return restart_syscall();
+
+ ret = bond_option_num_peer_notif_set(bond, new_value);
+ if (!ret)
+ ret = count;
+
+ rtnl_unlock();
+ return ret;
}
static DEVICE_ATTR(num_grat_arp, S_IRUGO | S_IWUSR,
bonding_show_num_peer_notif, bonding_store_num_peer_notif);
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index c70ad9f..73538b7 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -461,6 +461,7 @@ int bond_option_fail_over_mac_set(struct bonding *bond, int fail_over_mac);
int bond_option_xmit_hash_policy_set(struct bonding *bond,
int xmit_hash_policy);
int bond_option_resend_igmp_set(struct bonding *bond, int resend_igmp);
+int bond_option_num_peer_notif_set(struct bonding *bond, int num_peer_notif);
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 6e275d5..bfe3d3b 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -344,6 +344,7 @@ enum {
IFLA_BOND_FAIL_OVER_MAC,
IFLA_BOND_XMIT_HASH_POLICY,
IFLA_BOND_RESEND_IGMP,
+ IFLA_BOND_NUM_PEER_NOTIF,
__IFLA_BOND_MAX,
};
--
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