diff options
Diffstat (limited to 'Documentation/networking/filter.rst')
| -rw-r--r-- | Documentation/networking/filter.rst | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/networking/filter.rst b/Documentation/networking/filter.rst index b3f457802836..251c6bd73d15 100644 --- a/Documentation/networking/filter.rst +++ b/Documentation/networking/filter.rst @@ -1076,8 +1076,8 @@ off``. :: BPF_CMPXCHG This atomically compares the value addressed by ``dst_reg + off`` with -``R0``. If they match it is replaced with ``src_reg``, The value that was there -before is loaded back to ``R0``. +``R0``. If they match it is replaced with ``src_reg``. In either case, the +value that was there before is zero-extended and loaded back to ``R0``. Note that 1 and 2 byte atomic operations are not supported. |