linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2019-02-01	samples/bpf: Check the prog id before exiting	Maciej Fijalkowski	1	-5/+29
	Check the program id within the signal handler on polling xdp samples that were previously converted to libbpf usage. Avoid the situation of unloading the program that was not attached by sample that is exiting. Handle also the case where bpf_get_link_xdp_id didn't exit with an error but the xdp program was not found on an interface. Reported-by: Michal Papaj <michal.papaj@intel.com> Reported-by: Jakub Spizewski <jakub.spizewski@intel.com> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-02-01	samples/bpf: Add a "force" flag to XDP samples	Maciej Fijalkowski	1	-8/+32
	Make xdp samples consistent with iproute2 behavior and set the XDP_FLAGS_UPDATE_IF_NOEXIST by default when setting the xdp program on interface. Provide an option for user to force the program loading, which as a result will not include the mentioned flag in bpf_set_link_xdp_fd call. Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-02-01	samples/bpf: Extend RLIMIT_MEMLOCK for xdp_{sample_pkts, router_ipv4}	Maciej Fijalkowski	1	-0/+7
	There is a common problem with xdp samples that happens when user wants to run a particular sample and some bpf program is already loaded. The default 64kb RLIMIT_MEMLOCK resource limit will cause a following error (assuming that xdp sample that is failing was converted to libbpf usage): libbpf: Error in bpf_object__probe_name():Operation not permitted(1). Couldn't load basic 'r0 = 0' BPF program. libbpf: failed to load object './xdp_sample_pkts_kern.o' Fix it in xdp_sample_pkts and xdp_router_ipv4 by setting RLIMIT_MEMLOCK to RLIM_INFINITY. Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-06-27	samples/bpf: Add xdp_sample_pkts example	Toke Høiland-Jørgensen	1	-0/+169
	Add an example program showing how to sample packets from XDP using the perf event buffer. The example userspace program just prints the ethernet header for every packet sampled. Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>