From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 34D5D43CE0; Mon, 18 Mar 2024 08:48:19 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 15BA1402EB; Mon, 18 Mar 2024 08:48:15 +0100 (CET) Received: from smtp.cecloud.com (unknown [1.203.97.246]) by mails.dpdk.org (Postfix) with ESMTP id D46C7402BF for ; Mon, 18 Mar 2024 03:48:15 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by smtp.cecloud.com (Postfix) with ESMTP id A68617C0115 for ; Mon, 18 Mar 2024 10:48:12 +0800 (CST) X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 bpcheck: 1 X-ANTISPAM-LEVEL: 2 X-ABS-CHECKED: 1 Received: from desktop-db736ns (unknown [111.48.58.10]) by smtp.cecloud.com (postfix) whith ESMTP id P235493T281471621263728S1710730091605844_; Mon, 18 Mar 2024 10:48:12 +0800 (CST) X-IP-DOMAINF: 1 X-RL-SENDER: junwang01@cestc.cn X-SENDER: junwang01@cestc.cn X-LOGIN-NAME: junwang01@cestc.cn X-FST-TO: stephen@networkplumber.org X-RCPT-COUNT: 2 X-LOCAL-RCPT-COUNT: 0 X-MUTI-DOMAIN-COUNT: 0 X-SENDER-IP: 111.48.58.10 X-ATTACHMENT-NUM: 0 X-UNIQUE-TAG: X-System-Flag: 0 Date: Mon, 18 Mar 2024 10:48:03 +0800 From: "junwang01@cestc.cn" To: "Stephen Hemminger" Cc: dev Subject: Re: Re: dumpcap coredump for 82599 NIC References: <202403131000157988276@cestc.cn>, <20240313092953.517ac6c7@hermes.local>, <2024031417223703681414@cestc.cn> X-Priority: 3 X-GUID: 488C6160-2B73-41B0-8A9E-E6534B1ABBB9 X-Has-Attach: no X-Mailer: Foxmail 7, 1, 3, 52[cn] Mime-Version: 1.0 Message-ID: <2024031810480057847316@cestc.cn> Content-Type: multipart/alternative; boundary="----=_001_NextPart263114264125_=----" X-Mailman-Approved-At: Mon, 18 Mar 2024 08:48:13 +0100 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org 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The issue indeed lies with the ixgbe dr=
iver. After making the following modifications, dpdk-dumpcap is now functi=
oning properly.


 









junwang01@cestc.cn


 




From: junwang01@cestc.cn


Date: 2024-03-14 17:22



CC: dev


Subject: Re: Re: dumpcap coredump for 82599=20
NIC









Yes, I think you are right. After adding some debug information, I ca=
n=20
confirm that it's probably an initialization issue with the ixgbe driver. =



Secondary processes should initialize some callback functions, but th=
ey=20
seem to be missing. 


 




I made some minor modifications by moving the ixgbe_init_shared_code(=
hw)=20
position before the secondary processes.


While this brought about some changes, there still occurred a core=20
dump.


I suspect there might be other issues or that such modification might=
 not=20
be appropriate.


 




[root@xc03-compute3 /]# /dpdk/app/dpdk-dumpcap -i 0000:18:00.0


mlx5_net: Cannot attach mlx5 shared data


mlx5_net: Unable to init PMD global data: No such file or directory

mlx5_common: Failed to load driver mlx5_eth


EAL: Requested device 0000:3b:00.0 cannot be used


mlx5_net: Cannot attach mlx5 shared data


mlx5_net: Unable to init PMD global data: No such file or directory

mlx5_common: Failed to load driver mlx5_eth


EAL: Requested device 0000:3b:00.1 cannot be used


File: /tmp/dpdk-dumpcap_0_0000:18:00.0_20240314091910.pcapng


Capturing on '0000:18:00.0'


Packets captured: 2 Primary process is no longer active, exiting...

EAL: Fail to recv reply for request=20
/var/run/dpdk/rte/mp_socket:mp_pdump


pdump_prepare_client_request(): client request for pdump enable/disab=
le=20
failed


Floating point exception (core dumped)


 


diff --git a/drivers/=
net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index d6cf00317e77b64f9822c155115f388ae62241eb..0bf885d7eaba3689fb9b98cdca=
a6a928aa787985 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -1104,6 +1104,24 @@ eth_ixgbe_dev_init(struct rte_eth_dev *eth_dev, voi=
d *init_params __rte_unused)
 	eth_dev->tx_pkt_burst =3D &ixgbe_xmit_pkts;
 	eth_dev->tx_pkt_prepare =3D &ixgbe_prep_pkts;
=20
+	/* Vendor and Device ID need to be set before init of shared code */
+	hw->device_id =3D pci_dev->id.device_id;
+	hw->vendor_id =3D pci_dev->id.vendor_id;
+	hw->hw_addr =3D (void *)pci_dev->mem_resource[0].addr;
+	hw->allow_unsupported_sfp =3D 1;
+
+	/* Initialize the shared code (base driver) */
+#ifdef RTE_LIBRTE_IXGBE_BYPASS
+	diag =3D ixgbe_bypass_init_shared_code(hw);
+#else
+	diag =3D ixgbe_init_shared_code(hw);
+#endif /* RTE_LIBRTE_IXGBE_BYPASS */
+
+	if (diag !=3D IXGBE_SUCCESS) {
+		PMD_INIT_LOG(ERR, "Shared code init failed: %d", diag);
+		return -EIO;
+	}
+
 	/*
 	 * For secondary processes, we don't initialise any further as primary
 	 * has already done this work. Only check we don't need a different
@@ -1135,24 +1153,6 @@ eth_ixgbe_dev_init(struct rte_eth_dev *eth_dev, voi=
d *init_params __rte_unused)
 	rte_eth_copy_pci_info(eth_dev, pci_dev);
 	eth_dev->data->dev_flags |=3D RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;
=20
-	/* Vendor and Device ID need to be set before init of shared code */
-	hw->device_id =3D pci_dev->id.device_id;
-	hw->vendor_id =3D pci_dev->id.vendor_id;
-	hw->hw_addr =3D (void *)pci_dev->mem_resource[0].addr;
-	hw->allow_unsupported_sfp =3D 1;
-
-	/* Initialize the shared code (base driver) */
-#ifdef RTE_LIBRTE_IXGBE_BYPASS
-	diag =3D ixgbe_bypass_init_shared_code(hw);
-#else
-	diag =3D ixgbe_init_shared_code(hw);
-#endif /* RTE_LIBRTE_IXGBE_BYPASS */
-
-	if (diag !=3D IXGBE_SUCCESS) {
-		PMD_INIT_LOG(ERR, "Shared code init failed: %d", diag);
-		return -EIO;
-	}
-
 	if (hw->mac.ops.fw_recovery_mode && hw->mac.ops.fw_recover=
y_mode(hw)) {
 		PMD_INIT_LOG(ERR, "\nERROR: "
 			"Firmware recovery mode detected. Limiting functionality.\n"


 


 


Additionally, I'm using a debug build, but the printed call stack sti=
ll=20
doesn't feel clear enough, which is quite strange. 


 




    meson  -Dc_args=3D"-mno-avx512f"=20
-Ddisable_drivers=3Dnet/ark,net/atlantic,net/avp,net/axgbe,net/pfe,net/net=
vsc=20
-Dmax_numa_nodes=3D8 -Dmax_ethports=3D128 --buildtype=3Ddebug --optimizati=
on=3D0 build=20



    ninja -C build install


 









junwang01@cestc.cn


 





Date: 2024-03-14 00:29


To: junwang01@cestc.cn


CC: dev


Subject: Re: dumpcap coredump for 82599 NIC




On Wed, 13 Mar 2024 10:00:17 +0800


"junwang01@cestc.cn" <junwang01@cestc.cn> wrote:


 


> Hi, when I use dumpcap to capture packets on the 82559 network c=
ard,=20
coredump appears. 


> The network card bound to ovs-dpdk is 82599, but when I capture=20
packets in other non-82599 network cards (mellanox CX5/C6 or Intel's E810)=
, it=20
is normal. ,


> the dpdk version I am using is 22.11.1, but I see that the call =
stack=20
is strange, so I am asking you for help. 


> 


> 


> 


>  


> 


> I thought the new version of dpdk might solve it, so I upgraded =
the=20
dpdk version to 23.11, but the problem is still the same, but the call sta=
ck is=20
different and weirder. 


> 


> 


> 


> 


> 


> 


> junwang01@cestc.cn


 


This is not an issue with dumpcap. The problem is in ixgbe driver.

Some part of the code for checking link status is not safe to be call=
ed=20
in


secondary process.


 


The backtrace looks a bit messed up, since ixgbe driver should not be=
=20
calling i40e code.


Maybe do a debug build (so more complete symbols available).


 


 


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