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(parent: 4fb126c) | patch
xdp: XDP_REDIRECT should check IFF_UP and MTU
authorToshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Fri, 6 Jul 2018 02:49:00 +0000 (11:49 +0900)
committerAlexei Starovoitov <ast@kernel.org>
Sat, 7 Jul 2018 22:25:35 +0000 (15:25 -0700)
commitd8d7218ad842e18fc6976b87c08ed749e8d56313
tree57cdc7f8d2c55996b0ca1b6e74a8de8fa997b29ftree | snapshot
parent4fb126cbcbd6870851f0b3ba503e8ec0e66b9dd5commit | diff
xdp: XDP_REDIRECT should check IFF_UP and MTU

Otherwise we end up with attempting to send packets from down devices
or to send oversized packets, which may cause unexpected driver/device
behaviour. Generic XDP has already done this check, so reuse the logic
in native XDP.

Fixes: 814abfabef3c ("xdp: add bpf_redirect helper function")
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
include/linux/filter.h diff | blob | history
kernel/bpf/devmap.c diff | blob | history
net/core/filter.c diff | blob | history
Domain: System / Kernel; Licenses: GPL-2.0;