https://github.com/torvalds/linux
Revision e8161345ddbb66e449abde10d2fdce93f867eba9 authored by Willy Tarreau on 02 May 2022, 08:46:14 UTC, committed by Jakub Kicinski on 05 May 2022, 02:22:33 UTC
In commit 190cc82489f4 ("tcp: change source port randomizarion at
connect() time"), the table_perturb[] array was introduced and an
index was taken from the port_offset via hash_32(). But it turns
out that hash_32() performs a multiplication while the input here
comes from the output of SipHash in secure_seq, that is well
distributed enough to avoid the need for yet another hash.
Suggested-by: Amit Klein <aksecurity@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
1 parent 4c2c8f0
Tip revision: e8161345ddbb66e449abde10d2fdce93f867eba9 authored by Willy Tarreau on 02 May 2022, 08:46:14 UTC
tcp: drop the hash_32() part from the index calculation
tcp: drop the hash_32() part from the index calculation
Tip revision: e816134
.gitignore
# SPDX-License-Identifier: GPL-2.0-only
#
# NOTE! Don't add files that are generated in specific
# subdirectories here. Add them in the ".gitignore" file
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# NOTE! Please use 'git ls-files -i --exclude-standard'
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