[dpdk-dev] [PATCH v6 0/6] TAP RSS eBPF cover letter

Ophir Munk ophirmu at mellanox.com
Sat Jan 20 22:11:31 CET 2018


The patches of TAP RSS eBPF follow the RFC on this issue
https://dpdk.org/dev/patchwork/patch/31781/

v6 changes with respect to v5
=============================
1. Reorder thes following commits (source file commit before byte code commit)
  net/tap: add eBPF program file
  net/tap: add eBPF bytes code
2. Add acknowledgment to commits 

v5 changes with respect to v4
=============================
Update TAP document guide with RSS

v4 changes with respect to v3
=============================
* Code updates based on review comments
* New commits organization (2-->5) based on review comments
  1. net/tap: support actions for different classifiers (preparations for BPF. 
     No BPF code yet)
  2. net/tap: add eBPF bytes code (BPF bytes code in a separate file)
  3. net/tap: add eBPF program file (Program source code of bytes code)
  4. net/tap: add eBPF API (BPF API to be used by TAP)
  5. net/tap: implement TAP RSS using eBPF

v3 changes with respect to v2
=============================
* Add support for IPv6 RSS in BPF program
* Bug fixes
* Updated compatibility to kernel versions:
  eBPF requires Linux version 4.9 configured with BPF
* New license header (SPDX) for newly added files

v2 changes with respect to v1
=============================
* v2 has new commits organization (3 --> 2)
* BPF program was revised. It is successfully tested on
  IPv4 L3 L4 layers (compatible to mlx4 device)
* Licensing: no comments received for using "Dual BSD/GPL"
  string during BPF program loading to the kernel.
  (v1 and v2 are using the same license strings)
  Any comments are welcome.
* Compatibility to kernel versions:
  eBPF requires Linux version 4.2 configured with BPF. TAP PMD will
  successfully compile on systems with old or non-BPF configured kernels.
  During compilation time the required Linux headers are searched for.
  If they are not present missing definitions are locally added
  (tap_autoconf.h).
  If the kernel cannot support a BPF operation - at runtime it will
  gracefully reject the netlink message (with BPF) sent to it.
Ophir Munk (6):
  net/tap: support actions for different classifiers
  net/tap: add eBPF program file
  net/tap: add eBPF bytes code
  net/tap: add eBPF API
  net/tap: implement TAP RSS using eBPF
  doc: detail new tap RSS feature in guides

 doc/guides/nics/tap.rst           |   60 ++
 drivers/net/tap/Makefile          |   34 +
 drivers/net/tap/rte_eth_tap.h     |    9 +-
 drivers/net/tap/tap_bpf.h         |  112 +++
 drivers/net/tap/tap_bpf_api.c     |  190 +++++
 drivers/net/tap/tap_bpf_insns.h   | 1693 +++++++++++++++++++++++++++++++++++++
 drivers/net/tap/tap_bpf_program.c |  221 +++++
 drivers/net/tap/tap_flow.c        |  648 +++++++++++---
 drivers/net/tap/tap_flow.h        |   13 +
 drivers/net/tap/tap_rss.h         |   34 +
 drivers/net/tap/tap_tcmsgs.h      |    4 +
 11 files changed, 2922 insertions(+), 96 deletions(-)
 create mode 100644 drivers/net/tap/tap_bpf.h
 create mode 100644 drivers/net/tap/tap_bpf_api.c
 create mode 100644 drivers/net/tap/tap_bpf_insns.h
 create mode 100644 drivers/net/tap/tap_bpf_program.c
 create mode 100644 drivers/net/tap/tap_rss.h

-- 
2.7.4



More information about the dev mailing list