Josef Bacik 9802d86585 bpf: add a bpf_override_function helper ... Error injection is sloppy and very ad-hoc. BPF could fill this niche perfectly with it's kprobe functionality. We could make sure errors are only triggered in specific call chains that we care about with very specific situations. Accomplish this with the bpf_override_funciton helper. This will modify the probe'd callers return value to the specified value and set the PC to an override function that simply returns, bypassing the originally probed function. This gives us a nice clean way to implement systematic error injection for all of our code paths. Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2017-12-12 09:02:34 -08:00
..
arraymap.c	perf/bpf: Extend the perf_event_read_local() interface, a.k.a. "bpf: perf event change needed for subsequent bpf helpers"	2017-10-27 10:31:56 +02:00
bpf_lru_list.c	bpf: lru: Lower the PERCPU_NR_SCANS from 16 to 4	2017-04-17 13:55:52 -04:00
bpf_lru_list.h	bpf: Only set node->ref = 1 if it has not been set	2017-09-01 09:57:39 -07:00
cgroup.c	bpf, cgroup: implement eBPF-based device controller for cgroup v2	2017-11-05 23:26:51 +09:00
core.c	bpf: add a bpf_override_function helper	2017-12-12 09:02:34 -08:00
cpumap.c	bpf: cpumap micro-optimization in cpu_map_enqueue	2017-11-02 16:13:14 +09:00
devmap.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-10-22 13:39:14 +01:00
disasm.c	bpf: move instruction printing into a separate file	2017-10-10 12:30:16 -07:00
disasm.h	bpf: move instruction printing into a separate file	2017-10-10 12:30:16 -07:00
hashtab.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-10-22 13:39:14 +01:00
helpers.c	bpf: rename ARG_PTR_TO_STACK	2017-01-09 16:56:27 -05:00
inode.c	bpf: Add file mode configuration into bpf maps	2017-10-20 13:32:59 +01:00
lpm_trie.c	bpf: Add file mode configuration into bpf maps	2017-10-20 13:32:59 +01:00
Makefile	bpf: offload: add infrastructure for loading programs for a specific netdev	2017-11-05 22:26:18 +09:00
map_in_map.c	bpf: Add syscall lookup support for fd array and htab	2017-06-29 13:13:25 -04:00
map_in_map.h	bpf: Add syscall lookup support for fd array and htab	2017-06-29 13:13:25 -04:00
offload.c	bpf: offload: add a license header	2017-11-27 22:24:51 +01:00
percpu_freelist.c	bpf: fix lockdep splat	2017-11-15 19:46:32 +09:00
percpu_freelist.h	bpf: introduce percpu_freelist	2016-03-08 15:28:31 -05:00
sockmap.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-11-02 15:23:39 +09:00
stackmap.c	bpf: Add file mode configuration into bpf maps	2017-10-20 13:32:59 +01:00
syscall.c	bpf: revert report offload info to user space	2017-11-21 00:37:35 +01:00
tnum.c	bpf/verifier: track signed and unsigned min/max values	2017-08-08 17:51:34 -07:00
verifier.c	bpf: add a bpf_override_function helper	2017-12-12 09:02:34 -08:00