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net/mlx5: DR, Fix 'stack guard page was hit' error in dr_rule

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BugLink: https://bugs.launchpad.net/bugs/2084941

[ Upstream commit 94a3ad6c081381fa9ee523781789802b4ed00faf ]

This patch reduces the size of hw_ste_arr_optimized array that is
allocated on stack from 640 bytes (5 match STEs + 5 action STES)
to 448 bytes (2 match STEs + 5 action STES).
This fixes the 'stack guard page was hit' issue, while still fitting
majority of the usecases (up to 2 match STEs).

Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Link: https://patch.msgid.link/20240730061638.1831002-4-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Yevgeny Kliteynik
2024-07-30 09:16:32 +03:00
committed by Mehmet Basaran
parent c0b9d1514c
commit 6d7d7fb9a5
1 changed files with 1 additions and 1 deletions
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drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c
+1 -1
View File
@@ -7,7 +7,7 @@
/* don't try to optimize STE allocation if the stack is too constaraining */
#define DR_RULE_MAX_STES_OPTIMIZED 0
#else
#define DR_RULE_MAX_STES_OPTIMIZED 5
#define DR_RULE_MAX_STES_OPTIMIZED 2
#endif
#define DR_RULE_MAX_STE_CHAIN_OPTIMIZED (DR_RULE_MAX_STES_OPTIMIZED + DR_ACTION_MAX_STES)