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Message-Id: <1516915211-5869-1-git-send-email-u9012063@gmail.com>
Date: Thu, 25 Jan 2018 13:20:08 -0800
From: William Tu <u9012063@...il.com>
To: netdev@...r.kernel.org
Cc: pshelar@....org
Subject: [PATCHv6 net-next 0/3] net: erspan: add support for openvswitch
The first patch refactors the erspan header definitions.
Originally, the erspan fields are defined as a group into a __be16 field,
and use mask and offset to access each field. This is more costly due to
calling ntohs/htons and error-prone. The first patch changes it to use
bitfields. The second patch creates erspan.h in UAPI and move the definition
'struct erspan_metadata' to it for later openvswitch to use. The final patch
introduces the new OVS tunnel key attribute, OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS,
to program both v1 and v2 erspan tunnel for openvswitch.
William Tu (3):
net: erspan: use bitfield instead of mask and offset
net: erspan: create erspan metadata uapi header
openvswitch: add erspan version I and II support
include/net/erspan.h | 123 +++++++++++++++++++++++++--------------
include/uapi/linux/erspan.h | 52 +++++++++++++++++
include/uapi/linux/openvswitch.h | 1 +
net/ipv4/ip_gre.c | 38 +++++-------
net/ipv6/ip6_gre.c | 36 +++++-------
net/openvswitch/flow_netlink.c | 52 ++++++++++++++++-
6 files changed, 209 insertions(+), 93 deletions(-)
create mode 100644 include/uapi/linux/erspan.h
---
v5->v6
move field 'version' to the begining of the struct for easy expansion later.
remove redundant erspan validation function
create erspan.h in uapi
v4->v5
rather than passing individual members of erspan_metadata,
just pass the whole binary structure between kernel and userspace,
suggested by Pravin.
v3->v4
change from be32 to u32 for OVS_ERSPAN_OPT_IDX, suggested by Jiri Benc.
v2->v3
revert the "openvswitch: Add erspan tunnel support." commit ceaa001a170e.
redesign the OVS_TUNNEL_KEY_ATTR_ERSPAN_OPTS as nested attribute
v1->v2
Fix compatibility issue suggested by Pravin.
--
2.7.4
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