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Date: Fri, 6 Feb 2015 22:38:47 -0500
From: Andy Gospodarek <gospo@...ulusnetworks.com>
To: Mahesh Bandewar <maheshb@...gle.com>
Cc: 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>,
netdev <netdev@...r.kernel.org>,
Eric Dumazet <edumazet@...gle.com>
Subject: Re: [PATCH next 4/6] bonding: Allow userspace to set system_priority
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?
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
>
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