| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Sat, 7 Feb 2015 11:26:23 -0800
From: Mahesh Bandewar <maheshb@...gle.com>
To: Jay Vosburgh <jay.vosburgh@...onical.com>
Cc: Andy Gospodarek <gospo@...ulusnetworks.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 6, 2015 at 10:19 PM, Jay Vosburgh
<jay.vosburgh@...onical.com> wrote:
> 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.
>
Thank you guys for the suggestions. I didn't like those very long
names either but when there is something that already has name
similar, I defaulted to being verbose. I will have the name changed to
-
ad_actor_system_priority - ad_actor_sys_prio
ad_actor_system_mac_address - ad_actor_system
ad_actor_user_port_key - ad_user_portkey
Is this reasonable enough?
> -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
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists