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Sean Anderson 033a71efab selftests: net: csum: Fix checksums for packets with non-zero padding 
[ Upstream commit e8a63d473b ]

Padding is not included in UDP and TCP checksums. Therefore, reduce the
length of the checksummed data to include only the data in the IP
payload. This fixes spurious reported checksum failures like

rx: pkt: sport=33000 len=26 csum=0xc850 verify=0xf9fe
pkt: bad csum

Technically it is possible for there to be trailing bytes after the UDP
data but before the Ethernet padding (e.g. if sizeof(ip) + sizeof(udp) +
udp.len < ip.len). However, we don't generate such packets.

Fixes: 91a7de8560 ("selftests/net: add csum offload test")
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20240906210743.627413-1-sean.anderson@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2024-09-18 19:24:09 +02:00
..
crypto/chacha20-s390 tools/testing/crypto: Use vzalloc instead of vmalloc+memset 2022-07-05 14:46:36 +02:00
cxl cxl/region: check interleave capability 2024-07-05 09:34:07 +02:00
fault-injection docs: fault-injection: convert docs to ReST and rename to *.rst 2019-06-14 14:21:07 -06:00
ktest ktest: force $buildonly = 1 for 'make_warnings_file' test type 2024-04-13 13:07:37 +02:00
kunit kunit: tool: fix parsing of test attributes 2024-02-05 20:14:15 +00:00
memblock memblock tests: fix warning ‘struct seq_file’ declared inside parameter list 2023-09-14 10:51:28 +03:00
nvdimm tools/testing/nvdimm: Drop empty platform remove function 2023-06-07 13:30:21 -07:00
radix-tree maple_tree: do not preallocate nodes for slot stores 2024-01-05 15:19:43 +01:00
scatterlist tools/testing/scatterlist: add missing defines 2022-01-30 09:56:58 +02:00
selftests selftests: net: csum: Fix checksums for packets with non-zero padding 2024-09-18 19:24:09 +02:00
vsock vsock/test: fix SEQPACKET message bounds test 2023-12-03 07:33:05 +01:00