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From 981c7553f55c8200e00e845224b283059dc07c92 Mon Sep 17 00:00:00 2001
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From: Alex Vesker <valex@mellanox.com>
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Date: Sun, 6 Oct 2019 11:22:37 +0300
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Subject: [PATCH rdma-core 07/13] mlx5: Allow insertion of duplicate rules
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using DR API
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[ Upstream commit b7c0d4d4611ac14f18024a6388d75f672aa7457a ]
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Duplicate rules were not allowed to be configured with SW steering,
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unlike when working over root, fix to allow that.
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This functionality is useful for replacing rules without dropping
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packets.
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Fixes: a91e8c2bbedf ('mlx5: Expose steering rule functionality')
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Signed-off-by: Alex Vesker <valex@mellanox.com>
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Reviewed-by: Erez Shitrit <erezsh@mellanox.com>
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Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
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Signed-off-by: Nicolas Morey-Chaisemartin <nmoreychaisemartin@suse.com>
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---
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providers/mlx5/dr_rule.c | 10 ++++------
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1 file changed, 4 insertions(+), 6 deletions(-)
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diff --git a/providers/mlx5/dr_rule.c b/providers/mlx5/dr_rule.c
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index 1b873744..1e2d1813 100644
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--- a/providers/mlx5/dr_rule.c
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+++ b/providers/mlx5/dr_rule.c
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@@ -815,12 +815,10 @@ again:
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* it means that all the previous stes are the same,
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* if so, this rule is duplicated.
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*/
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- if (dr_ste_is_last_in_rule(nic_matcher, matched_ste->ste_chain_location)) {
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- dr_dbg(dmn, "Duplicate rule inserted, aborting\n");
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- errno = EINVAL;
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- return NULL;
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- }
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- return matched_ste;
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+ if (!dr_ste_is_last_in_rule(nic_matcher, ste_location))
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+ return matched_ste;
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+
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+ dr_dbg(dmn, "Duplicate rule inserted\n");
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}
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if (!skip_rehash && dr_rule_need_enlarge_hash(cur_htbl, dmn, nic_dmn)) {
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--
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2.20.1
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