This patch set adds some new capabilities to flow_dissector:
- Add flags to flow dissector functions to control dissection
- Flag to stop dissection when L3 header is seen (don't
dissect L4)
- Flag to stop dissection when encapsulation is detected
- Flag to parse first fragment of fragmented packet. This
may provide L4 ports
- Added new reporting in key_control
- Packet is a fragment
- Packet is a first fragment
- Packet has encapsulation
Also:
- Make __skb_set_sw_hash a general function
- Create functions to get a flow hash based on flowi4 or flowi6
structures without an reference to an skbuff
- Ignore flow dissector return value from ___skb_get_hash. Just
use whatever key fields are found to make a hash
Tested:
Ran 200 netperf TCP_RR instances for IPv6 and IPv4. Did not see any
regression. Ran UDP_RR with 10000 byte request and response size
for IPv4 and IPv6, no regression observed however I did see better
performance with IPv6 flow labels due to use of flow labels for L4
hash.
Tom Herbert (11):
flow_dissector: Move skb related functions to skbuff.h
skbuff: Make __skb_set_sw_hash a general function
flowi: Abstract out functions to get flow hash based on flowi
flow_dissector: Jump to exit code in __skb_flow_dissect
flow_dissector: Add flags argument to skb_flow_dissector functions
flow_dissector: Add control/reporting of fragmentation
flow_dissector: Support IPv6 fragment header
flow_dissector: Add flag to stop parsing at L3
flow_dissector: Add flag to stop parsing when an IPv6 flow label is
seen
flow_dissector: Add control/reporting of encapsulation
flow_dissector: Ignore flow dissector return value from
___skb_get_hash
drivers/net/bonding/bond_main.c | 2 +-
drivers/net/ethernet/cisco/enic/enic_clsf.c | 2 +-
drivers/net/hyperv/netvsc_drv.c | 2 +-
include/linux/skbuff.h | 113 +++++++++++++++++----
include/net/flow.h | 19 ++++
include/net/flow_dissector.h | 65 +++----------
net/core/flow.c | 36 +++++++
net/core/flow_dissector.c | 146 ++++++++++++++++++----------
net/ethernet/eth.c | 2 +-
net/sched/cls_flow.c | 2 +-
net/sched/cls_flower.c | 2 +-
net/sched/sch_choke.c | 4 +-
12 files changed, 267 insertions(+), 128 deletions(-)
--
1.8.1
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