From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Rasesh Mody <rmody@marvell.com>
Cc: dev@dpdk.org, Ferruh Yigit <ferruh.yigit@intel.com>,
stable@dpdk.org, Xi Zhang <xix.zhang@intel.com>
Subject: [dpdk-stable] [PATCH] examples/kni: fix crash during MTU set
Date: Thu, 21 May 2020 16:10:42 +0100 [thread overview]
Message-ID: <20200521151042.3730374-1-ferruh.yigit@intel.com> (raw)
During MTU set (kni_change_mtu) sample application setup queues, which
can free and re-allocate queues.
Meanwhile sample application keeps continues in Rx/Tx burst calls in
different threads, which may cause crash during queue setup.
Pausing application Rx/Tx calls before MTU set and starts it back
afterwards.
Bugzilla ID: 482
Fixes: a26b116749a3 ("examples/kni: fix MTU change to setup Tx queue")
Cc: stable@dpdk.org
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
Cc: Rasesh Mody <rmody@marvell.com>
Cc: Xi Zhang <xix.zhang@intel.com>
---
examples/kni/main.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/examples/kni/main.c b/examples/kni/main.c
index 7a927a50c0..80dd0353e7 100644
--- a/examples/kni/main.c
+++ b/examples/kni/main.c
@@ -768,9 +768,8 @@ monitor_all_ports_link_status(void *arg)
return NULL;
}
-/* Callback for request of changing MTU */
static int
-kni_change_mtu(uint16_t port_id, unsigned int new_mtu)
+kni_change_mtu_(uint16_t port_id, unsigned int new_mtu)
{
int ret;
uint16_t nb_rxd = NB_RXD;
@@ -851,6 +850,19 @@ kni_change_mtu(uint16_t port_id, unsigned int new_mtu)
return 0;
}
+/* Callback for request of changing MTU */
+static int
+kni_change_mtu(uint16_t port_id, unsigned int new_mtu)
+{
+ int ret;
+
+ rte_atomic32_inc(&kni_pause);
+ ret = kni_change_mtu_(port_id, new_mtu);
+ rte_atomic32_dec(&kni_pause);
+
+ return ret;
+}
+
/* Callback for request of configuring network interface up/down */
static int
kni_config_network_interface(uint16_t port_id, uint8_t if_up)
--
2.25.4
next reply other threads:[~2020-05-21 15:10 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-21 15:10 Ferruh Yigit [this message]
2020-05-21 15:37 ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
2020-05-21 15:46 ` Ferruh Yigit
2020-05-21 20:29 ` Thomas Monjalon
2020-05-21 17:32 ` [dpdk-stable] [EXT] " Rasesh Mody
2020-05-24 15:50 ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
2020-05-22 2:17 ` [dpdk-stable] " Zhang, XiX
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200521151042.3730374-1-ferruh.yigit@intel.com \
--to=ferruh.yigit@intel.com \
--cc=dev@dpdk.org \
--cc=rmody@marvell.com \
--cc=stable@dpdk.org \
--cc=xix.zhang@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).