56 lines
1.7 KiB
Diff
56 lines
1.7 KiB
Diff
From 61efd6de2fbb8ee077863ee5a355ac3dfd9365b9 Mon Sep 17 00:00:00 2001
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Message-Id: <61efd6de2fbb8ee077863ee5a355ac3dfd9365b9.1599144624.git.lucien.xin@gmail.com>
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From: Xin Long <lucien.xin@gmail.com>
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Date: Tue, 1 Sep 2020 13:59:27 +0800
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Subject: [PATCH] Revert "teamd: Disregard current state when considering port
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enablement"
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This reverts commit deadb5b715227429a1879b187f5906b39151eca9.
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As Patrick noticed, with that commit, teamd_port_check_enable()
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would set the team port to the new state unconditionally, which
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triggers another change message from kernel to userspace, then
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teamd_port_check_enable() is called again to set the team port
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to the new state.
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This would go around and around to update the team port state,
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and even cause teamd to consume 100% cpu.
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As the issue caused by that commit is serious, it has to be
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reverted. As for the issued fixed by that commit, I would
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propose a new fix later.
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Signed-off-by: Jiri Pirko <jiri@nvidia.com>
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---
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teamd/teamd_per_port.c | 8 ++++++--
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1 file changed, 6 insertions(+), 2 deletions(-)
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diff --git a/teamd/teamd_per_port.c b/teamd/teamd_per_port.c
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index 166da57..d429753 100644
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--- a/teamd/teamd_per_port.c
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+++ b/teamd/teamd_per_port.c
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@@ -442,14 +442,18 @@ int teamd_port_check_enable(struct teamd_context *ctx,
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bool should_enable, bool should_disable)
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{
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bool new_enabled_state;
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+ bool curr_enabled_state;
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int err;
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if (!teamd_port_present(ctx, tdport))
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return 0;
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+ err = teamd_port_enabled(ctx, tdport, &curr_enabled_state);
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+ if (err)
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+ return err;
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- if (should_enable)
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+ if (!curr_enabled_state && should_enable)
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new_enabled_state = true;
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- else if (should_disable)
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+ else if (curr_enabled_state && should_disable)
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new_enabled_state = false;
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else
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return 0;
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--
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2.18.1
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