From: kys@exchange.microsoft.com
To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com,
vkuznets@redhat.com, jasowang@redhat.com,
leann.ogasawara@canonical.com, marcelo.cerri@canonical.com,
sthemmin@microsoft.com
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Subject: [PATCH 4/6] drivers: hv: vmbus: Increase the time between retries in vmbus_post_msg()
Date: Thu, 18 May 2017 10:46:05 -0700 [thread overview]
Message-ID: <1495129567-13744-4-git-send-email-kys@exchange.microsoft.com> (raw)
In-Reply-To: <1495129534-13628-1-git-send-email-kys@exchange.microsoft.com>
From: K. Y. Srinivasan <kys@microsoft.com>
Commit c0bb03924f1a ("Drivers: hv: vmbus: Raise retry/wait limits in
vmbus_post_msg()") increased the retry/wait limits of vmbus_post_msg()
to address the new DoS protection policies in WS2016.
Increase the time between retries to make the
code more robust.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
drivers/hv/connection.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c
index c2d74ee..59c11ff 100644
--- a/drivers/hv/connection.c
+++ b/drivers/hv/connection.c
@@ -390,7 +390,7 @@ int vmbus_post_msg(void *buffer, size_t buflen, bool can_sleep)
else
mdelay(usec / 1000);
- if (usec < 256000)
+ if (retries < 22)
usec *= 2;
}
return ret;
--
1.7.1
next prev parent reply other threads:[~2017-05-18 17:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-18 17:45 [PATCH 0/6] Drivers: hv: vmbus: Some miscellaneous fixes kys
2017-05-18 17:46 ` [PATCH 1/6] Drivers: hv: vmbus: Get the current time from the current clocksource kys
2017-05-18 17:46 ` [PATCH 2/6] hv_utils: drop .getcrosststamp() support from PTP driver kys
2017-05-18 17:46 ` [PATCH 3/6] hv_utils: fix TimeSync work on pre-TimeSync-v4 hosts kys
2017-05-18 17:46 ` kys [this message]
2017-05-18 17:46 ` [PATCH 5/6] vmbus: Reuse uuid_le_to_bin() helper kys
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