The support of doing RSS for rte_flow_action was a cool idea
but it has been broken for several releases of DPDK as the
kernel and BPF infrastructure changed.
This series cleans up the BPF program, implements several
features that were never completed in the original code
and changes to use the current BPF toolchain.
The result should be easier to read and maintain.
The build process checks for the required components
and if not there will stub out to not supported.
This patch series is mostly the same as the original RFC,
most of the changes are to split it up and always build
the BPF from source.
v3 - fix handling of case where libbpf not present and
therefore the not supported needs to be returned.
Stephen Hemminger (7):
net/tap: remove unused RSS hash types
net/tap: validate and setup parameters for BPF RSS
tap: stop "vendoring" linux bpf headers
net/tap: rewrite the RSS BPF program
net/tap: use libbpf to load new BPF program
net/tap: remove no longer used files
MAINTAINERS: add maintainer for TAP device
.gitignore | 3 -
MAINTAINERS | 1 +
drivers/net/tap/bpf/Makefile | 19 -
drivers/net/tap/bpf/README | 12 +
drivers/net/tap/bpf/bpf_api.h | 276 ----
drivers/net/tap/bpf/bpf_elf.h | 53 -
drivers/net/tap/bpf/bpf_extract.py | 86 --
drivers/net/tap/bpf/meson.build | 81 ++
drivers/net/tap/bpf/tap_bpf_program.c | 255 ----
drivers/net/tap/bpf/tap_bpf_program.o | Bin 0 -> 28080 bytes
drivers/net/tap/bpf/tap_rss.c | 272 ++++
drivers/net/tap/meson.build | 26 +-
drivers/net/tap/rte_eth_tap.c | 2 +
drivers/net/tap/rte_eth_tap.h | 9 +-
drivers/net/tap/tap_bpf.h | 121 --
drivers/net/tap/tap_bpf_api.c | 190 ---
drivers/net/tap/tap_bpf_insns.h | 1743 -------------------------
drivers/net/tap/tap_flow.c | 521 +++-----
drivers/net/tap/tap_flow.h | 11 +-
drivers/net/tap/tap_rss.h | 14 +-
drivers/net/tap/tap_tcmsgs.h | 4 +-
21 files changed, 534 insertions(+), 3165 deletions(-)
delete mode 100644 drivers/net/tap/bpf/Makefile
create mode 100644 drivers/net/tap/bpf/README
delete mode 100644 drivers/net/tap/bpf/bpf_api.h
delete mode 100644 drivers/net/tap/bpf/bpf_elf.h
delete mode 100644 drivers/net/tap/bpf/bpf_extract.py
create mode 100644 drivers/net/tap/bpf/meson.build
delete mode 100644 drivers/net/tap/bpf/tap_bpf_program.c
create mode 100644 drivers/net/tap/bpf/tap_bpf_program.o
create mode 100644 drivers/net/tap/bpf/tap_rss.c
delete mode 100644 drivers/net/tap/tap_bpf.h
delete mode 100644 drivers/net/tap/tap_bpf_api.c
delete mode 100644 drivers/net/tap/tap_bpf_insns.h
--
2.43.0
