These patches add a new module to support encap/decap of Network Service Header (NSH) as defined in:
https://tools.ietf.org/html/draft-ietf-sfc-nsh-01 Both NSH Type 1 and Type 2 metadata are supported with a simple registration hook to allow listeners to register to see packets with Type 1 or a specific class of Type 2 metadata. NSH could be added to packets sent over a variety of link types, eg. VxLAN, GRE, ethernet. v2 - fix copyright notices and tidy up use of types v3 - fix various style issues in nsh module remove VxLAN-GPE changes add nsh logging module as example add nsh netfilter encap target as example The previous version included mods to allow NSH over VxLAN-GPE but I've withdrawn this as VxLAN-GPE is currently being added in a much more complete patchset. My intention would be to add NSH support on top of that once it's applied. I've added the NSH logging module to illustrate the use of the simple mechanism to register for incoming decap'd NSH metadata. I've added the NSH netfilter target to illustrate metadata being NSH encap'd. Brian Russell (3): nsh: encapsulation module nsh: logging module nsh: netfilter target include/net/nsh.h | 147 +++++++++++++++ include/uapi/linux/if_ether.h | 1 + include/uapi/linux/netfilter/xt_NSH.h | 25 +++ net/ipv4/Kconfig | 18 ++ net/ipv4/Makefile | 2 + net/ipv4/nsh.c | 335 ++++++++++++++++++++++++++++++++++ net/ipv4/nsh_log.c | 135 ++++++++++++++ net/netfilter/Kconfig | 9 + net/netfilter/Makefile | 1 + net/netfilter/xt_NSH.c | 95 ++++++++++ 10 files changed, 768 insertions(+) create mode 100644 include/net/nsh.h create mode 100644 include/uapi/linux/netfilter/xt_NSH.h create mode 100644 net/ipv4/nsh.c create mode 100644 net/ipv4/nsh_log.c create mode 100644 net/netfilter/xt_NSH.c -- 2.1.4
