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Date: Fri, 6 Feb 2015 16:51:54 -0800
From: Mahesh Bandewar <maheshb@...gle.com>
To: Jay Vosburgh <j.vosburgh@...il.com>,
Andy Gospodarek <andy@...yhouse.net>,
Veaceslav Falico <vfalico@...il.com>,
Nikolay Aleksandrov <nikolay@...hat.com>,
David Miller <davem@...emloft.net>
Cc: Mahesh Bandewar <maheshb@...gle.com>,
netdev <netdev@...r.kernel.org>,
Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH next 4/6] bonding: Allow userspace to set system_priority
This patch allows user to randomize the system-priority in an ad-system.
The allowed range is 1 - 0xFFFF while default value is 0xFFFF. If user
does not specify this value, the system defaults to 0xFFFF, which is
what it was before this patch.
Following example code could set the value -
# modprobe bonding mode=4
# sys_prio=$(( 1 + RANDOM + RANDOM ))
# echo $sys_prio > /sys/class/net/bond0/bonding/ad_actor_system_priority
# echo +eth1 > /sys/class/net/bond0/bonding/slaves
...
# ip link set bond0 up
Signed-off-by: Mahesh Bandewar <maheshb@...gle.com>
---
drivers/net/bonding/bond_3ad.c | 5 ++++-
drivers/net/bonding/bond_main.c | 14 ++++++++++++++
drivers/net/bonding/bond_options.c | 29 ++++++++++++++++++++++++++++-
drivers/net/bonding/bond_procfs.c | 2 ++
drivers/net/bonding/bond_sysfs.c | 15 +++++++++++++++
include/net/bond_options.h | 1 +
include/net/bonding.h | 1 +
7 files changed, 65 insertions(+), 2 deletions(-)
diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
index 2a69095266c1..1177f96194dd 100644
--- a/drivers/net/bonding/bond_3ad.c
+++ b/drivers/net/bonding/bond_3ad.c
@@ -1912,7 +1912,8 @@ void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution)
BOND_AD_INFO(bond).aggregator_identifier = 0;
- BOND_AD_INFO(bond).system.sys_priority = 0xFFFF;
+ BOND_AD_INFO(bond).system.sys_priority =
+ bond->params.ad_actor_sysprio;
BOND_AD_INFO(bond).system.sys_mac_addr = *((struct mac_addr *)bond->dev->dev_addr);
/* initialize how many times this module is called in one
@@ -1963,6 +1964,8 @@ void bond_3ad_bind_slave(struct slave *slave)
port->sm_vars &= ~AD_PORT_LACP_ENABLED;
/* actor system is the bond's system */
port->actor_system = BOND_AD_INFO(bond).system.sys_mac_addr;
+ port->actor_system_priority =
+ BOND_AD_INFO(bond).system.sys_priority;
/* tx timer(to verify that no more than MAX_TX_IN_SECOND
* lacpdu's are sent in one second)
*/
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index a50ec87486f3..561b2bde5aeb 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -4104,6 +4104,7 @@ static int bond_check_params(struct bond_params *params)
struct bond_opt_value newval;
const struct bond_opt_value *valptr;
int arp_all_targets_value;
+ u16 ad_actor_sysprio = 0;
/* Convert string parameters. */
if (mode) {
@@ -4398,6 +4399,18 @@ static int bond_check_params(struct bond_params *params)
fail_over_mac_value = BOND_FOM_NONE;
}
+ if (bond_mode == BOND_MODE_8023AD) {
+ bond_opt_initstr(&newval, "default");
+ valptr = bond_opt_parse(
+ bond_opt_get(BOND_OPT_AD_ACTOR_SYSPRIO),
+ &newval);
+ if (!valptr) {
+ pr_err("Error: No ad_actor_sysprio default value");
+ return -EINVAL;
+ }
+ ad_actor_sysprio = valptr->value;
+ }
+
if (lp_interval == 0) {
pr_warn("Warning: ip_interval must be between 1 and %d, so it was reset to %d\n",
INT_MAX, BOND_ALB_DEFAULT_LP_INTERVAL);
@@ -4426,6 +4439,7 @@ static int bond_check_params(struct bond_params *params)
params->lp_interval = lp_interval;
params->packets_per_slave = packets_per_slave;
params->tlb_dynamic_lb = 1; /* Default value */
+ params->ad_actor_sysprio = ad_actor_sysprio;
if (packets_per_slave > 0) {
params->reciprocal_packets_per_slave =
reciprocal_value(packets_per_slave);
diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c
index 4df28943d222..d8f6760143ae 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -70,6 +70,8 @@ static int bond_option_slaves_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
const struct bond_opt_value *newval);
+static int bond_option_ad_actor_sysprio_set(struct bonding *bond,
+ const struct bond_opt_value *newval);
static const struct bond_opt_value bond_mode_tbl[] = {
@@ -186,6 +188,12 @@ static const struct bond_opt_value bond_tlb_dynamic_lb_tbl[] = {
{ NULL, -1, 0}
};
+static const struct bond_opt_value bond_ad_actor_sysprio_tbl[] = {
+ { "minval", 1, BOND_VALFLAG_MIN},
+ { "maxval", 65535, BOND_VALFLAG_MAX | BOND_VALFLAG_DEFAULT},
+ { NULL, -1, 0},
+};
+
static const struct bond_option bond_opts[BOND_OPT_LAST] = {
[BOND_OPT_MODE] = {
.id = BOND_OPT_MODE,
@@ -379,7 +387,15 @@ static const struct bond_option bond_opts[BOND_OPT_LAST] = {
.values = bond_tlb_dynamic_lb_tbl,
.flags = BOND_OPTFLAG_IFDOWN,
.set = bond_option_tlb_dynamic_lb_set,
- }
+ },
+ [BOND_OPT_AD_ACTOR_SYSPRIO] = {
+ .id = BOND_OPT_AD_ACTOR_SYSPRIO,
+ .name = "ad_actor_system_priority",
+ .unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
+ .flags = BOND_OPTFLAG_IFDOWN,
+ .values = bond_ad_actor_sysprio_tbl,
+ .set = bond_option_ad_actor_sysprio_set,
+ },
};
/* Searches for an option by name */
@@ -1349,3 +1365,14 @@ static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
return 0;
}
+
+
+static int bond_option_ad_actor_sysprio_set(struct bonding *bond,
+ const struct bond_opt_value *newval)
+{
+ netdev_info(bond->dev, "Setting ad_actor_sysprio to (%llu)\n",
+ newval->value);
+
+ bond->params.ad_actor_sysprio = newval->value;
+ return 0;
+}
diff --git a/drivers/net/bonding/bond_procfs.c b/drivers/net/bonding/bond_procfs.c
index 83095a0b4b90..9e33c48886ef 100644
--- a/drivers/net/bonding/bond_procfs.c
+++ b/drivers/net/bonding/bond_procfs.c
@@ -134,6 +134,8 @@ static void bond_info_show_master(struct seq_file *seq)
bond->params.ad_select);
seq_printf(seq, "Aggregator selection policy (ad_select): %s\n",
optval->string);
+ seq_printf(seq, "System priority: %d\n",
+ BOND_AD_INFO(bond).system.sys_priority);
if (__bond_3ad_get_active_agg_info(bond, &ad_info)) {
seq_printf(seq, "bond %s has no active aggregator\n",
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 7e9e151d4d61..4350aa06f867 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -692,6 +692,20 @@ static ssize_t bonding_show_packets_per_slave(struct device *d,
static DEVICE_ATTR(packets_per_slave, S_IRUGO | S_IWUSR,
bonding_show_packets_per_slave, bonding_sysfs_store_option);
+static ssize_t bonding_show_ad_actor_sysprio(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct bonding *bond = to_bond(d);
+
+ if (BOND_MODE(bond) == BOND_MODE_8023AD)
+ return sprintf(buf, "%hu\n", bond->params.ad_actor_sysprio);
+
+ return 0;
+}
+static DEVICE_ATTR(ad_actor_system_priority, S_IRUGO | S_IWUSR,
+ bonding_show_ad_actor_sysprio, bonding_sysfs_store_option);
+
static struct attribute *per_bond_attrs[] = {
&dev_attr_slaves.attr,
&dev_attr_mode.attr,
@@ -725,6 +739,7 @@ static struct attribute *per_bond_attrs[] = {
&dev_attr_lp_interval.attr,
&dev_attr_packets_per_slave.attr,
&dev_attr_tlb_dynamic_lb.attr,
+ &dev_attr_ad_actor_system_priority.attr,
NULL,
};
diff --git a/include/net/bond_options.h b/include/net/bond_options.h
index ea6546d2c946..c2af1db37354 100644
--- a/include/net/bond_options.h
+++ b/include/net/bond_options.h
@@ -63,6 +63,7 @@ enum {
BOND_OPT_LP_INTERVAL,
BOND_OPT_SLAVES,
BOND_OPT_TLB_DYNAMIC_LB,
+ BOND_OPT_AD_ACTOR_SYSPRIO,
BOND_OPT_LAST
};
diff --git a/include/net/bonding.h b/include/net/bonding.h
index 29f53eacac0a..7a5c79fcf866 100644
--- a/include/net/bonding.h
+++ b/include/net/bonding.h
@@ -143,6 +143,7 @@ struct bond_params {
int packets_per_slave;
int tlb_dynamic_lb;
struct reciprocal_value reciprocal_packets_per_slave;
+ u16 ad_actor_sysprio;
};
struct bond_parm_tbl {
--
2.2.0.rc0.207.ga3a616c
--
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