linux-stable/tools
Davide Caratti 7ca4feb37e flow_dissector: fix TTL and TOS dissection on IPv4 fragments
[ Upstream commit d212683805 ]

the following command:

 # tc filter add dev $h2 ingress protocol ip pref 1 handle 101 flower \
   $tcflags dst_ip 192.0.2.2 ip_ttl 63 action drop

doesn't drop all IPv4 packets that match the configured TTL / destination
address. In particular, if "fragment offset" or "more fragments" have non
zero value in the IPv4 header, setting of FLOW_DISSECTOR_KEY_IP is simply
ignored. Fix this dissecting IPv4 TTL and TOS before fragment info; while
at it, add a selftest for tc flower's match on 'ip_ttl' that verifies the
correct behavior.

Fixes: 518d8a2e9b ("net/flow_dissector: add support for dissection of misc ip header fields")
Reported-by: Shuang Li <shuali@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-04-07 14:47:40 +02:00
..
accounting tools/accounting/getdelays.c: fix netlink attribute length 2020-04-13 10:48:08 +02:00
arch x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes 2020-12-11 13:23:30 +01:00
bpf bpftool: Fix compilation failure for net.o with older glibc 2021-01-17 14:05:37 +01:00
build tools: Factor HOSTCC, HOSTLD, HOSTAR definitions 2021-01-30 13:54:10 +01:00
cgroup iocost_monitor: drop string wrap around numbers when outputting json 2020-06-22 09:31:01 +02:00
debugging
firewire
firmware
gpio tools: gpio-hammer: Avoid potential overflow in main 2020-10-01 13:17:47 +02:00
hv
iio
include tools headers UAPI: Sync linux/const.h with the kernel headers 2021-01-06 14:48:37 +01:00
io_uring tools/io_uring: fix compile breakage 2020-10-07 08:01:27 +02:00
kvm/kvm_stat
laptop
leds
lib libbpf: Fix BTF dump of pointer-to-array-of-struct 2021-03-30 14:35:27 +02:00
memory-model
nfsd
objtool objtool: Fix ".cold" section suffix check for newer versions of GCC 2021-03-04 10:26:30 +01:00
pci
pcmcia
perf perf auxtrace: Fix auxtrace queue conflict 2021-03-30 14:35:28 +02:00
power tools: Factor HOSTCC, HOSTLD, HOSTAR definitions 2021-01-30 13:54:10 +01:00
scripts tools: Factor HOSTCC, HOSTLD, HOSTAR definitions 2021-01-30 13:54:10 +01:00
spi
testing flow_dissector: fix TTL and TOS dissection on IPv4 fragments 2021-04-07 14:47:40 +02:00
thermal/tmon
time
usb usbip: tools: fix build error for multiple definition 2021-03-09 11:09:38 +01:00
virtio
vm tools/vm: fix cross-compile build 2020-04-29 16:33:15 +02:00
wmi
Makefile