diff options
author | Teng Qin <qinteng@fb.com> | 2017-04-24 19:00:37 -0700 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-09 09:50:19 +0200 |
commit | fcbc8d0e7dbef92a6b611a6d3d1ed8ea228464a0 (patch) | |
tree | 799f1810aae0dc200326eca8db17a244ab0eda14 /include | |
parent | 8f54ead2389feeb1c9d4a308af7cb4e8496716ff (diff) |
bpf: map_get_next_key to return first key on NULL
commit 8fe45924387be6b5c1be59a7eb330790c61d5d10 upstream.
When iterating through a map, we need to find a key that does not exist
in the map so map_get_next_key will give us the first key of the map.
This often requires a lot of guessing in production systems.
This patch makes map_get_next_key return the first key when the key
pointer in the parameter is NULL.
Signed-off-by: Teng Qin <qinteng@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Chenbo Feng <fengc@google.com>
Cc: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions