lwn.git/tools/testing/selftests/net/route_hint.sh, branch master Linux kernel documentation tree maintained by Jonathan Corbet http://mirrors.hust.edu.cn/git/lwn.git/atom?h=master 2025-08-25T23:07:16+00:00 selftests: net: add test for dst hint mechanism with directed broadcast addresses 2025-08-25T23:07:16+00:00 Oscar Maes oscmaes92@gmail.com 2025-08-19T17:46:42+00:00 urn:sha1:bd0d9e751b9beaaefb1cff012f41dc2098a932e3 Add a test for ensuring that the dst hint mechanism is used for directed broadcast addresses. This test relies on mausezahn for sending directed broadcast packets. Additionally, a high GRO flush timeout is set to ensure that packets will be received as lists. The test determines if the hint mechanism was used by checking the in_brd statistic using lnstat. Signed-off-by: Oscar Maes <oscmaes92@gmail.com> Link: https://patch.msgid.link/20250819174642.5148-3-oscmaes92@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>