summaryrefslogtreecommitdiff
path: root/scripts/lib/kdoc/kdoc_files.py
diff options
context:
space:
mode:
authorBui Quang Minh <minhquangbui99@gmail.com>2025-06-30 22:13:14 +0700
committerPaolo Abeni <pabeni@redhat.com>2025-07-03 11:23:03 +0200
commit5177373c31318c3c6a190383bfd232e6cf565c36 (patch)
tree544872488cc2a5026a7fbc990fb67d8af078479b /scripts/lib/kdoc/kdoc_files.py
parentc9cbbe7ab6f31ba91c47c09eee75017d5b69462d (diff)
virtio-net: xsk: rx: fix the frame's length check
When calling buf_to_xdp, the len argument is the frame data's length without virtio header's length (vi->hdr_len). We check that len with xsk_pool_get_rx_frame_size() + vi->hdr_len to ensure the provided len does not larger than the allocated chunk size. The additional vi->hdr_len is because in virtnet_add_recvbuf_xsk, we use part of XDP_PACKET_HEADROOM for virtio header and ask the vhost to start placing data from hard_start + XDP_PACKET_HEADROOM - vi->hdr_len not hard_start + XDP_PACKET_HEADROOM But the first buffer has virtio_header, so the maximum frame's length in the first buffer can only be xsk_pool_get_rx_frame_size() not xsk_pool_get_rx_frame_size() + vi->hdr_len like in the current check. This commit adds an additional argument to buf_to_xdp differentiate between the first buffer and other ones to correctly calculate the maximum frame's length. Cc: stable@vger.kernel.org Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Fixes: a4e7ba702701 ("virtio_net: xsk: rx: support recv small mode") Signed-off-by: Bui Quang Minh <minhquangbui99@gmail.com> Link: https://patch.msgid.link/20250630151315.86722-2-minhquangbui99@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'scripts/lib/kdoc/kdoc_files.py')
0 files changed, 0 insertions, 0 deletions