diff options
| author | Alexander Frolkin <avf@eldamar.org.uk> | 2013-06-19 13:54:25 +0400 |
|---|---|---|
| committer | Simon Horman <horms@verge.net.au> | 2013-06-26 13:01:46 +0400 |
| commit | eba3b5a78799d21dea05118b294524958f0ab592 (patch) | |
| tree | 2f84838b89f17c7b10cee8fa618f232c64e9fc1d /include | |
| parent | acaac5d8bbedf6bd96f53960780942e1ad90d70e (diff) | |
| download | linux-eba3b5a78799d21dea05118b294524958f0ab592.tar.xz | |
ipvs: SH fallback and L4 hashing
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 <avf@eldamar.org.uk>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/ip_vs.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/uapi/linux/ip_vs.h b/include/uapi/linux/ip_vs.h index a24537725e80..29458223d044 100644 --- a/include/uapi/linux/ip_vs.h +++ b/include/uapi/linux/ip_vs.h @@ -20,6 +20,12 @@ #define IP_VS_SVC_F_PERSISTENT 0x0001 /* persistent port */ #define IP_VS_SVC_F_HASHED 0x0002 /* hashed entry */ #define IP_VS_SVC_F_ONEPACKET 0x0004 /* one-packet scheduling */ +#define IP_VS_SVC_F_SCHED1 0x0008 /* scheduler flag 1 */ +#define IP_VS_SVC_F_SCHED2 0x0010 /* scheduler flag 2 */ +#define IP_VS_SVC_F_SCHED3 0x0020 /* scheduler flag 3 */ + +#define IP_VS_SVC_F_SCHED_SH_FALLBACK IP_VS_SVC_F_SCHED1 /* SH fallback */ +#define IP_VS_SVC_F_SCHED_SH_PORT IP_VS_SVC_F_SCHED2 /* SH use port */ /* * Destination Server Flags |