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Date: Fri, 06 Feb 2015 22:19:34 -0800
From: Jay Vosburgh <jay.vosburgh@...onical.com>
To: Andy Gospodarek <gospo@...ulusnetworks.com>
cc: Mahesh Bandewar <maheshb@...gle.com>,
Andy Gospodarek <andy@...yhouse.net>,
Veaceslav Falico <vfalico@...il.com>,
Nikolay Aleksandrov <nikolay@...hat.com>,
David Miller <davem@...emloft.net>,
netdev <netdev@...r.kernel.org>,
Eric Dumazet <edumazet@...gle.com>
Subject: Re: [PATCH next 4/6] bonding: Allow userspace to set system_priority
Andy Gospodarek <gospo@...ulusnetworks.com> wrote:
>On Fri, Feb 06, 2015 at 04:51:54PM -0800, Mahesh Bandewar wrote:
>> 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
>
>If I can convince you to change 'ad_actor_system_macaddr' to something
>different can I also convince you to change this to something shorter,
>too? :)
>
>Maybe 'ad_sys_priority' or something?
The name, verbose as it is, is from the 802.1AX standard, and
there's also a "partner_system_priority" (which is not a user-settable
thing, it's a field in the LACPDUs). My suggestion would therefore be
"ad_actor_sys_prio" for this one, as I think there's some value in
continuity with the names from the standard.
The MAC address one in the standard is just "actor_system";
there's a "partner_system" here, too, which is also a field in the
LACPDU. I'm ok with calling that one just "actor_system," as presumably
anyone changing it will know what it means.
-J
>Thanks!
>
>> # 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
---
-Jay Vosburgh, jay.vosburgh@...onical.com
--
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