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kernel_optimize_test/tools
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Davide Caratti e3ccad57ac flow_dissector: fix TTL and TOS dissection on IPv4 fragments 
[ Upstream commit d2126838050ccd1dadf310ffb78b2204f3b032b9 ]

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 15:00:07 +02:00
..
accounting
arch x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes 2020-12-06 09:58:13 +01:00
bootconfig tools/bootconfig: Add tracing_on support to helper scripts 2021-01-19 18:27:19 +01:00
bpf tools/resolve_btfids: Fix build error with older host toolchains 2021-03-17 17:06:16 +01:00
build tools: Factor HOSTCC, HOSTLD, HOSTAR definitions 2021-01-30 13:55:19 +01:00
cgroup
debugging
edid
firewire
firmware
gpio tools: gpio: fix %llu warning in gpio-watch.c 2021-01-27 11:55:20 +01:00
hv
iio
include static_call: Allow module use without exposing static_call_key 2021-03-30 14:31:53 +02:00
io_uring tools/io_uring: fix compile breakage 2020-09-21 07:50:58 -06:00
kvm/kvm_stat tools/kvm_stat: Exempt time-based counters 2020-12-11 19:18:51 -05:00
laptop
leds
lib libbpf: Fix BTF dump of pointer-to-array-of-struct 2021-03-30 14:32:03 +02:00
memory-model
objtool static_call: Allow module use without exposing static_call_key 2021-03-30 14:31:53 +02:00
pci
pcmcia
perf perf synthetic events: Avoid write of uninitialized memory when generating PERF_RECORD_MMAP* records 2021-03-30 14:32:06 +02:00
power tools/power/x86/intel-speed-select: Set higher of cpuinfo_max_freq or base_frequency 2021-02-07 15:37:13 +01:00
scripts tools: Factor HOSTCC, HOSTLD, HOSTAR definitions 2021-01-30 13:55:19 +01:00
spi
testing flow_dissector: fix TTL and TOS dissection on IPv4 fragments 2021-04-07 15:00:07 +02:00
thermal/tmon
time
usb
virtio
vm
wmi
Makefile