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sch_cake: Make sure we can write the IP header before changing DSCP bits
authorToke Høiland-Jørgensen <toke@redhat.com>
Thu, 4 Apr 2019 13:01:33 +0000 (15:01 +0200)
committerDavid S. Miller <davem@davemloft.net>
Thu, 4 Apr 2019 17:55:59 +0000 (10:55 -0700)
commit555362652f049f7f6355b20ef895b67249676eb3
tree745972ccb1eada0d1672c97b65bbde019890316ctree | snapshot
parenta66635c1fe991cdca6306e627e0c5ad696da5147commit | diff
sch_cake: Make sure we can write the IP header before changing DSCP bits

There is not actually any guarantee that the IP headers are valid before we
access the DSCP bits of the packets. Fix this using the same approach taken
in sch_dsmark.

Reported-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/sched/sch_cake.c diff | blob | history
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