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| author | Kev Jackson <foamdino@gmail.com> | 2021-06-07 14:08:35 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-23 14:43:55 +0200 |
| commit | c54a64e7c0accd096e0b2ec7b61379a19ba0106e (patch) | |
| tree | 9ef86a0ef1df32deb9e464627458b854974682e6 /tools | |
| parent | ffc6be4cb86133ddb1c398bc3b3ca5207026d1c0 (diff) | |
| download | linux-c54a64e7c0accd096e0b2ec7b61379a19ba0106e.tar.gz linux-c54a64e7c0accd096e0b2ec7b61379a19ba0106e.tar.bz2 linux-c54a64e7c0accd096e0b2ec7b61379a19ba0106e.zip | |
libbpf: Fixes incorrect rx_ring_setup_done
[ Upstream commit 11fc79fc9f2e395aa39fa5baccae62767c5d8280 ]
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: ca7a83e2487a ("libbpf: Only create rx and tx XDP rings when necessary")
Signed-off-by: Kev Jackson <foamdino@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/YL4aU4f3Aaik7CN0@linux-dev
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/lib/bpf/xsk.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/lib/bpf/xsk.c b/tools/lib/bpf/xsk.c index 007fe5d59438..fe2bec500bf6 100644 --- a/tools/lib/bpf/xsk.c +++ b/tools/lib/bpf/xsk.c @@ -928,7 +928,7 @@ int xsk_socket__create_shared(struct xsk_socket **xsk_ptr, goto out_put_ctx; } if (xsk->fd == umem->fd) - umem->rx_ring_setup_done = true; + umem->tx_ring_setup_done = true; } err = xsk_get_mmap_offsets(xsk->fd, &off); |