The patch adds VxLAN encap tc-offload support. The userspace datapath,
dpif-netdev,
flow format differs than the kernel datapath in case of tunnel encap. Unlike
kernel,
the dpif-netdev does not use set and output action, but uses a single clone
action with
all the tunnel info nested inside. As an exmaple blow:
actions:clone(tnl_push(tnl_port(5),
header(size=50,type=4,eth(dst=06:1d:6e:a3:f1:61,src=26:df:25:f6:7b:4f,dl_type=0x0800),
ipv4(src=172.31.1.100,dst=172.31.1.1,proto=17,tos=0,ttl=64,frag=0x4000),
udp(src=0,dst=4789,csum=0x0),
vxlan(flags=0x8000000,vni=0x0)),out_port(2)
), 3)
The patch parses the above tunnel encap format and passes to the tc for
offloading the VxLAN tunnel. The idea is similar to the recent dpdk
offload patchset:
netdev-offload-dpdk: Support offload of clone tnl_push/output actions
Example of tc format:
$ tc -s filter show dev ovs-p1 ingress
filter protocol ip pref 3 flower chain 0
filter protocol ip pref 3 flower chain 0 handle 0x1
dst_mac 56:2a:1f:3c:bb:f2
src_mac 96:0c:a7:b0:60:a4
eth_type ipv4
ip_tos 0/0x3
ip_flags nofrag
skip_hw
not_in_hw
action order 1: tunnel_key set
src_ip 172.31.1.100
dst_ip 172.31.1.1
key_id 0
dst_port 4789
nocsum
ttl 64 pipe
index 2 ref 1 bind 1 installed 0 sec used 0 sec
Action statistics:
Sent 168 bytes 2 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
no_percpu
action order 2: mirred (Egress Redirect to device ovs-p0) stolen
index 2 ref 1 bind 1 installed 0 sec used 0 sec
Action statistics:
Sent 168 bytes 2 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
cookie b46e99079448ce581d0fe7a9853c0bb5
no_percpu
Ilya Maximets (2):
netdev: Allow storing dpif type into netdev structure.
netdev-offload: Use dpif type instead of class.
William Tu (1):
netdev-offload-tc: Add VxLAN encap support.
lib/dpif-netdev.c | 15 ++---
lib/dpif-netlink.c | 23 ++++----
lib/dpif.c | 21 ++++---
lib/netdev-offload-dpdk.c | 17 +++---
lib/netdev-offload-tc.c | 124 +++++++++++++++++++++++++++++++++++++++++-
lib/netdev-offload.c | 52 +++++++++---------
lib/netdev-offload.h | 16 +++---
lib/netdev-provider.h | 3 +-
lib/netdev.c | 16 ++++++
lib/netdev.h | 2 +
ofproto/ofproto-dpif-upcall.c | 5 +-
11 files changed, 217 insertions(+), 77 deletions(-)
--
2.7.4
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