I wish to be personally CC'ed the answers/comments posted to the list in
response to my posting.
I have 2 ports(eth0, eth1) in my device. I use kernel(2.6.23) bonding driver
v3.1.3 (June 13, 2007) to bond 2 ports to one aggregator and use the
following commands to setup the environment:
insmod ./bonding.ko mode=4 miimon=100
ifconfig bond0 172.23.26.223 netmask 255.255.255.0
ifconfig eth0 down
ifconfig eth1 down
ifenslave bond0 eth0 eth1
After the setting, I cat the proc entry and got the following information
Bonding Mode: IEEE 802.3ad Dynamic link aggregation
Transmit Hash Policy: layer2 (0)
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
802.3ad info
LACP rate: slow
Active Aggregator Info:
Aggregator ID: 1
Number of ports: 1
Actor Key: 17
Partner Key: 1
Partner Mac Address: 00:00:00:00:00:00
Slave Interface: eth0
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:e0:0c:48:00:04
Aggregator ID: 1
Slave Interface: eth1
MII Status: up
Link Failure Count: 0
Permanent HW addr: 6f:74:66:73:74:79
Aggregator ID: 2
It shows that 2 ports could not bond to a aggregator. After I trace the the
bonding driver code, I modify the ad_port_selection_logic() in bond_3ad.c as
following:
- ((MAC_ADDRESS_COMPARE(&(port->partner_oper_system), &(null_mac_addr)) &&
// partner answers
+ (!(MAC_ADDRESS_COMPARE(&(port->partner_oper_system), &(null_mac_addr)) &&
// partner answers
!aggregator->is_individual) // but is not individual OR
)
After the modification, I cat the proc entry again and the result is as
following:
/home/shares # cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.1.3 (June 13, 2007)
Bonding Mode: IEEE 802.3ad Dynamic link aggregation
Transmit Hash Policy: layer2 (0)
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
802.3ad info
LACP rate: slow
Active Aggregator Info:
Aggregator ID: 1
Number of ports: 2
Actor Key: 17
Partner Key: 1
Partner Mac Address: 00:00:00:00:00:00
Slave Interface: eth0
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:e0:0c:48:00:04
Aggregator ID: 1
Slave Interface: eth1
MII Status: up
Link Failure Count: 0
Permanent HW addr: 6f:74:66:73:74:79
Aggregator ID: 1
The behavior changes from 'one aggregator with one port' to 'one aggregator
with 2 ports', the latter seems more accurate. Is there a bug in bonding
driver code v3.1.3 (June 13, 2007)?
Best regards,
Lewis Li
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