Hi!
This series allows us to pass ifindex automatically when we
set up TC cls_bpf or XDP offload. There is a fair bit of
refactoring to separate the parse and load stages of lib/bpf.c.
In case of TC the skip_sw flag may come after the program
arguments (e.g. "bpf obj prog.o da skip_sw"), so we can't
just load the program as we parse the arguments. Note that
this impacts only loading of the program, all other supported
methods of finding a program (pinned, bytecode, bytefile-file)
are handled as previously, the load call will do nothing for
them.
To simplify the implementation f_bpf and m_bpf will no longer
allow specifying programs multiple times. Device ifindex is
also resolved before running filter-specific code.
Jakub Kicinski (11):
bpf: pass program type in struct bpf_cfg_in
bpf: keep parsed program mode in struct bpf_cfg_in
bpf: allocate opcode table in struct bpf_cfg_in
bpf: split parse from program loading
bpf: rename bpf_parse_common() to bpf_parse_and_load_common()
bpf: expose bpf_parse_common() and bpf_load_common()
bpf: allow loading programs for a specific ifindex
{f,m}_bpf: don't allow specifying multiple bpf programs
tc_filter: resolve device name before parsing filter
f_bpf: communicate ifindex for eBPF offload
iplink: communicate ifindex for xdp offload
include/bpf_util.h | 25 +++++++-
ip/iplink.c | 4 +-
ip/iplink_xdp.c | 13 ++++-
ip/iproute_lwtunnel.c | 3 +-
ip/xdp.h | 4 +-
lib/bpf.c | 155 ++++++++++++++++++++++++++++++--------------------
tc/f_bpf.c | 18 +++++-
tc/m_bpf.c | 6 +-
tc/tc_filter.c | 50 ++++++++--------
9 files changed, 178 insertions(+), 100 deletions(-)
--
2.14.1
