bpf: add MAP_LOOKUP_AND_DELETE_ELEM syscall
authorMauricio Vasquez B <mauricio.vasquez@polito.it>
Thu, 18 Oct 2018 13:16:30 +0000 (15:16 +0200)
committerAlexei Starovoitov <ast@kernel.org>
Fri, 19 Oct 2018 20:24:31 +0000 (13:24 -0700)
commitbd513cd08f10cbe28856f99ae951e86e86803861
tree4af4c4453badd34c259ad0c8f3140216c22519e2
parentf1a2e44a3aeccb3ff18d3ccc0b0203e70b95bd92
bpf: add MAP_LOOKUP_AND_DELETE_ELEM syscall

The previous patch implemented a bpf queue/stack maps that
provided the peek/pop/push functions.  There is not a direct
relationship between those functions and the current maps
syscalls, hence a new MAP_LOOKUP_AND_DELETE_ELEM syscall is added,
this is mapped to the pop operation in the queue/stack maps
and it is still to implement in other kind of maps.

Signed-off-by: Mauricio Vasquez B <mauricio.vasquez@polito.it>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
include/uapi/linux/bpf.h
kernel/bpf/syscall.c