aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm64/net
diff options
context:
space:
mode:
authorMartin KaFai Lau <kafai@fb.com>2017-06-05 12:15:50 -0700
committerDavid S. Miller <davem@davemloft.net>2017-06-06 15:41:23 -0400
commitbd5f5f4ecb78e2698dad655645b6d6a2f7012a8c (patch)
tree3d3bc441f14e2494ada5a37143f5fd190075f540 /arch/arm64/net
parentbpf: Add BPF_PROG_GET_FD_BY_ID (diff)
downloadlinux-dev-bd5f5f4ecb78e2698dad655645b6d6a2f7012a8c.tar.xz
linux-dev-bd5f5f4ecb78e2698dad655645b6d6a2f7012a8c.zip
bpf: Add BPF_MAP_GET_FD_BY_ID
Add BPF_MAP_GET_FD_BY_ID command to allow user to get a fd from a bpf_map's ID. bpf_map_inc_not_zero() is added and is called with map_idr_lock held. __bpf_map_put() is also added which has the 'bool do_idr_lock' param to decide if the map_idr_lock should be acquired when freeing the map->id. In the error path of bpf_map_inc_not_zero(), it may have to call __bpf_map_put(map, false) which does not need to take the map_idr_lock when freeing the map->id. It is currently limited to CAP_SYS_ADMIN which we can consider to lift it in followup patches. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Acked-by: Alexei Starovoitov <ast@fb.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/arm64/net')
0 files changed, 0 insertions, 0 deletions