Files
Linux/tools/lib
Kev Jackson 11fc79fc9f libbpf: Fixes incorrect rx_ring_setup_done
When calling xsk_socket__create_shared(), the logic at line 1097 marks a
boolean flag true within the xsk_umem structure to track setup progress
in order to support multiple calls to the function.  However, instead of
marking umem->tx_ring_setup_done, the code incorrectly sets
umem->rx_ring_setup_done.  This leads to improper behaviour when
creating and destroying xsk and umem structures.

Multiple calls to this function is documented as supported.

Fixes: ca7a83e248 ("libbpf: Only create rx and tx XDP rings when necessary")
Signed-off-by: Kev Jackson <[email protected]>
Signed-off-by: Andrii Nakryiko <[email protected]>
Acked-by: Yonghong Song <[email protected]>
Link: https://lore.kernel.org/bpf/YL4aU4f3Aaik7CN0@linux-dev
2021-06-07 17:44:03 -07:00
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