From: Ding Tianhong <dingtianhong@huawei•com>
To: Andy Gospodarek <andy@greyhouse•net>,
Dan Williams <dcbw@redhat•com>,
David Miller <davem@davemloft•net>
Cc: <fubar@us•ibm.com>, <nikolay@redhat•com>, <vfalico@redhat•com>,
<netdev@vger•kernel.org>
Subject: [PATCH net v3] bonding: disable arp and enable mii monitoring when bond change to no uses arp mode
Date: Fri, 22 Nov 2013 22:28:43 +0800 [thread overview]
Message-ID: <528F6A1B.70904@huawei.com> (raw)
In-Reply-To: <528ACD8A.1010409@greyhouse.net>
Because the ARP monitoring is not support for 802.3ad, but I still
could change the mode to 802.3ad from ab mode while ARP monitoring
is running, it is incorrect.
So add a check for 802.3ad in bonding_store_mode to fix the problem,
and make a new macro BOND_NO_USES_ARP() to simplify the code.
v2: according to the Dan Williams's suggestion, bond mode is the most
important bond option, it should override any of the other sub-options.
So when the mode is changed, the conficting values should be cleared
or reset, otherwise the user has to duplicate more operations to modify
the logic. I disable the arp and enable mii monitoring when the bond mode
is changed to AB, TB and 8023AD if the arp interval is true.
v3: according to the Nik's suggestion, the default value of miimon should need
a name, there is several place to use it, and the bond_store_arp_interval()
could use micro BOND_NO_USES_ARP to make the code more simpify.
Suggested-by: Dan Williams <dcbw@redhat•com>
Suggested-by: Nikolay Aleksandrov <nikolay@redhat•com>
Signed-off-by: Ding Tianhong <dingtianhong@huawei•com>
---
drivers/net/bonding/bond_main.c | 4 ++--
drivers/net/bonding/bond_options.c | 13 +++++++++----
drivers/net/bonding/bond_sysfs.c | 4 +---
drivers/net/bonding/bonding.h | 7 +++++++
4 files changed, 19 insertions(+), 9 deletions(-)
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 4dd5ee2..36eab0c 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -4110,7 +4110,7 @@ static int bond_check_params(struct bond_params *params)
if (!miimon) {
pr_warning("Warning: miimon must be specified, otherwise bonding will not detect link failure, speed and duplex which are essential for 802.3ad operation\n");
pr_warning("Forcing miimon to 100msec\n");
- miimon = 100;
+ miimon = BOND_DEFAULT_MIIMON;
}
}
@@ -4147,7 +4147,7 @@ static int bond_check_params(struct bond_params *params)
if (!miimon) {
pr_warning("Warning: miimon must be specified, otherwise bonding will not detect link failure and link speed which are essential for TLB/ALB load balancing\n");
pr_warning("Forcing miimon to 100msec\n");
- miimon = 100;
+ miimon = BOND_DEFAULT_MIIMON;
}
}
diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c
index 9a5223c..ea6f640 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -45,10 +45,15 @@ int bond_option_mode_set(struct bonding *bond, int mode)
return -EPERM;
}
- if (BOND_MODE_IS_LB(mode) && bond->params.arp_interval) {
- pr_err("%s: %s mode is incompatible with arp monitoring.\n",
- bond->dev->name, bond_mode_tbl[mode].modename);
- return -EINVAL;
+ if (BOND_NO_USES_ARP(mode) && bond->params.arp_interval) {
+ pr_info("%s: %s mode is incompatible with arp monitoring, start mii monitoring\n",
+ bond->dev->name, bond_mode_tbl[mode].modename);
+ /* disable arp monitoring */
+ bond->params.arp_interval = 0;
+ /* set miimon to default value */
+ bond->params.miimon = BOND_DEFAULT_MIIMON;
+ pr_info("%s: Setting MII monitoring interval to %d.\n",
+ bond->dev->name, bond->params.miimon);
}
/* don't cache arp_validate between modes */
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 0ec2a7e..abf5e10 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -523,9 +523,7 @@ static ssize_t bonding_store_arp_interval(struct device *d,
ret = -EINVAL;
goto out;
}
- if (bond->params.mode == BOND_MODE_ALB ||
- bond->params.mode == BOND_MODE_TLB ||
- bond->params.mode == BOND_MODE_8023AD) {
+ if (BOND_NO_USES_ARP(bond->params.mode)) {
pr_info("%s: ARP monitoring cannot be used with ALB/TLB/802.3ad. Only MII monitoring is supported on %s.\n",
bond->dev->name, bond->dev->name);
ret = -EINVAL;
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h
index ca31286..a9f4f9f 100644
--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -35,6 +35,8 @@
#define BOND_MAX_ARP_TARGETS 16
+#define BOND_DEFAULT_MIIMON 100
+
#define IS_UP(dev) \
((((dev)->flags & IFF_UP) == IFF_UP) && \
netif_running(dev) && \
@@ -55,6 +57,11 @@
((mode) == BOND_MODE_TLB) || \
((mode) == BOND_MODE_ALB))
+#define BOND_NO_USES_ARP(mode) \
+ (((mode) == BOND_MODE_8023AD) || \
+ ((mode) == BOND_MODE_TLB) || \
+ ((mode) == BOND_MODE_ALB))
+
#define TX_QUEUE_OVERRIDE(mode) \
(((mode) == BOND_MODE_ACTIVEBACKUP) || \
((mode) == BOND_MODE_ROUNDROBIN))
--
1.8.0
next prev parent reply other threads:[~2013-11-22 14:30 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-16 6:30 [PATCH net RESEND] bonding: don't change to 802.3ad mode while ARP monitoring is running Ding Tianhong
2013-11-18 17:44 ` Dan Williams
2013-11-18 20:48 ` David Miller
2013-11-18 22:50 ` Dan Williams
2013-11-19 1:48 ` Ding Tianhong
2013-11-19 2:31 ` Andy Gospodarek
2013-11-19 3:02 ` Ding Tianhong
2013-11-22 2:12 ` [PATCH net v2] bonding: disable arp and enable mii monitoring when bond change to no uses arp mode Ding Tianhong
2013-11-22 13:55 ` Nikolay Aleksandrov
2013-11-22 14:12 ` Ding Tianhong
2013-11-22 13:36 ` [PATCH net RESEND] bonding: don't change to 802.3ad mode while ARP monitoring is running Nikolay Aleksandrov
2013-11-22 14:28 ` Ding Tianhong [this message]
2013-11-22 19:07 ` [PATCH net v3] bonding: disable arp and enable mii monitoring when bond change to no uses arp mode Dan Williams
2013-11-22 20:01 ` Nikolay Aleksandrov
2013-11-28 23:20 ` David Miller
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