By default the SH scheduler rejects connections that are hashed onto a
realserver of weight 0. This patch adds a flag to make SH choose a
different realserver in this case, instead of rejecting the connection.
The patch also adds a flag to make SH include the source port (TCP, UDP,
SCTP) in the hash as well as the source address. This basically allows
for deterministic round-robin load balancing (i.e., where any director
in a cluster of directors with identical config will send the same
packet the same way).
The flags are service flags (IP_VS_SVC_F_SCHED*) so that these options
can be set per service. They are set using a new option to ipvsadm.
Signed-off-by: Alexander Frolkin <[email protected]>
Acked-by: Julian Anastasov <[email protected]>
Signed-off-by: Simon Horman <[email protected]>
Some service fields are in network order:
- netmask: used once in network order and also as prefix len for IPv6
- port
Other parameters are in host order:
- struct ip_vs_flags: flags and mask moved between user and kernel only
- sync state: moved between user and kernel only
- syncid: sent over network as single octet
Signed-off-by: Julian Anastasov <[email protected]>
Signed-off-by: Simon Horman <[email protected]>
Julian Anastasov