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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: silicom-usa.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: VI1PR0402MB3517.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5ecdac6d-46e9-4125-6a15-08da21860696 X-MS-Exchange-CrossTenant-originalarrivaltime: 18 Apr 2022 21:54:34.5420 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: c9e326d8-ce47-4930-8612-cc99d3c87ad1 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: ag3PGtFF6Fc7KQsCUb11fH2Tb9Zk58C1X+WTJbJfwctjYtr7GIyp54iUHnm5a8NyIu9CAcnrptdt4ZscjgabIw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR04MB7943 X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org > -----Original Message----- > From: Wang, Haiyue > Sent: Thursday, April 14, 2022 8:11 AM > To: Jeff Daly ; dev@dpdk.org > Cc: stable@dpdk.org > Subject: RE: [PATCH v6 2/2] net/ixgbe: Fix SFP detection and linking on > hotplug >=20 > Caution: This is an external email. Please take care when clicking links = or > opening attachments. >=20 >=20 > > -----Original Message----- > > From: Jeff Daly > > Sent: Thursday, April 14, 2022 18:41 > > To: Wang, Haiyue ; dev@dpdk.org > > Cc: stable@dpdk.org > > Subject: RE: [PATCH v6 2/2] net/ixgbe: Fix SFP detection and linking > > on hotplug > > > > > > > > > -----Original Message----- > > > From: Wang, Haiyue > > > Sent: Wednesday, April 13, 2022 11:00 PM > > > To: Jeff Daly ; dev@dpdk.org > > > Cc: stable@dpdk.org; Stephen Douthit > > > Subject: RE: [PATCH v6 2/2] net/ixgbe: Fix SFP detection and linking > > > on hotplug > > > > > > Caution: This is an external email. Please take care when clicking > > > links or opening attachments. > > > > > > > > > > -----Original Message----- > > > > From: Wang, Haiyue > > > > Sent: Thursday, April 14, 2022 10:49 > > > > To: Jeff Daly ; dev@dpdk.org > > > > Cc: stable@dpdk.org; Stephen Douthit > > > > Subject: RE: [PATCH v6 2/2] net/ixgbe: Fix SFP detection and > > > > linking on hotplug > > > > > > > > > -----Original Message----- > > > > > From: Jeff Daly > > > > > Sent: Wednesday, April 13, 2022 01:42 > > > > > To: dev@dpdk.org > > > > > Cc: stable@dpdk.org; Stephen Douthit ; > > > > > Wang, Haiyue > > > > > Subject: [PATCH v6 2/2] net/ixgbe: Fix SFP detection and linking > > > > > on hotplug > > > > > > > > > > Currently the ixgbe driver does not ID any SFP except for the > > > > > first one plugged in. This can lead to no-link, or incorrect spee= d > conditions. > > > > > > > > > > For example: > > > > > > > > > > * If link is initially established with a 1G SFP, and later a > > > > > 1G/10G multispeed part is later installed, then the MAC link > > > > > setup functions are never called to change from 1000BASE-X to > > > > > 10GBASE-R mode, and the link stays running at the slower rate. > > > > > > > > > > * If link is initially established with a 1G SFP, and later a > > > > > 10G only module is later installed, no link is established, > > > > > since we are still trasnsmitting in 1000BASE-X mode to a 10GBASE-= R > only partner. > > > > > > > > > > Refactor the SFP ID/setup, and link setup code, to more closely > > > > > match the flow of the mainline kernel driver which does not have > > > > > these issues. In that driver a service task runs periodically > > > > > to handle these operations based on bit flags that have been set > > > > > (usually via interrupt or userspace request), and then get > > > > > cleared once the requested subtask has been completed. > > > > > > > > > > Fixes: af75078fece ("first public release") > > > > > Cc: stable@dpdk.org > > > > > > > > > > Signed-off-by: Stephen Douthit > > > > > Signed-off-by: Jeff Daly > > > > > --- > > > > > drivers/net/ixgbe/ixgbe_ethdev.c | 533 > > > > > +++++++++++++++++++++++-------- > > > > > +++++++++++++++++++++++drivers/net/ixgbe/ixgbe_ethdev.h | > > > > > 14 +- > > > > > 2 files changed, 410 insertions(+), 137 deletions(-) > > > > > > > > > > > > > > > > > > > > > > > struct ixgbe_stat_mapping_registers { @@ -510,7 +509,7 @@ > > > > > struct ixgbe_adapter { > > > > > uint8_t pflink_fullchk; > > > > > uint8_t mac_ctrl_frame_fwd; > > > > > rte_atomic32_t link_thread_running; > > > > > - pthread_t link_thread_tid; > > > > > + pthread_t service_thread_tid; > > > > > > > > No need to rename this variable, > > > > > > Let's do link related service now, so we can keep it, I missed to > > > add my comment. ;-) > > > > > > > I don't understand this reply, are you still asking to rework the patch= or > not? > > >=20 > Different thing. >=20 > 1. This var can be kept to trace the created thread. (change less code to= keep > the patch clean.) > 2. Yes, two patches. >=20 ok, I guess I'm just being thick-headed here, but I still don't understand = why you are saying it should be split into=20 2 patches. if I understand *what* you are asking, you're saying make the o= riginal thread periodic to continuously do ixgbe_link_setup() ? I believe the problem with the setup is that the s= fp_type is only detected once at initialization time and if nothing is in the cage then the code just ret= urns IXGBE_SUCCESS, in which case making=20 this task periodic is useless. the whole issue of hotplug is only addresse= d by the entire patch which 1) makes the task periodic, 2) changes the actions of the task to look for whether the c= age has something in it and whether its been changed and needs to be configured again. > > > > we can separate this patch as least into two patches: > > > > > > > > > > > > > > 1st, change the thread handle 'ixgbe_dev_setup_link_thread_handler' > > > > from > > > > > > > > run-once to as periodical, to handle the original issue. > > > > > > > > The name 'ixgbe_dev_setup_link_thread_handler' may be not suitable > > > > now, as it is a service thread. > > > > > > > > We can change it to "'ixgbe_link_service_thread_handler'" to > > > > reflect the change purpose. > > > > > > > > 2nd, add the SFP hotplug in this patch. > > > > > > > > > > > > > > > > > }; > > > > > > > > > > -- > > > > > 2.25.1