[{"id":3674805,"web_url":"http://patchwork.ozlabs.org/comment/3674805/","msgid":"","list_archive_url":null,"date":"2026-04-08T14:27:49","subject":"Re: [Intel-wired-lan] [PATCH iwl-next v2] ice: call\n netif_keep_dst() once when entering switchdev mode","submitter":{"id":70275,"url":"http://patchwork.ozlabs.org/api/people/70275/","name":"Paul Menzel","email":"pmenzel@molgen.mpg.de"},"content":"Dear Aleksandr, dear Marcin,\n\n\nThank you for the patch.\n\nAm 08.04.26 um 16:14 schrieb Aleksandr Loktionov:\n> From: Marcin Szycik \n> \n> netif_keep_dst() only needs to be called once for the uplink VSI, not\n> once for each port representor. Move it from ice_eswitch_setup_repr()\n> to ice_eswitch_enable_switchdev().\n\nIt’d be great, if you could share the commands, how to verify your change.\n\n> Fixes: defd52455aee (\"ice: do Tx through PF netdev in slow-path\")\n> Signed-off-by: Marcin Szycik \n> Signed-off-by: Aleksandr Loktionov \n> ---\n> v1 -> v2:\n> - Verified Fixes: tag via bisect - defd52455aee introduced the redundant\n> per-repr call to netif_keep_dst(uplink_vsi->netdev) by changing the\n> target netdev to the uplink VSI inside the per-representor setup\n> function. Before that commit, each call was on a distinct repr->netdev\n> so no Fixes: predating it applies.\n> \n> drivers/net/ethernet/intel/ice/ice_eswitch.c | 4 ++--\n> 1 file changed, 2 insertions(+), 2 deletions(-)\n> \n> diff --git a/drivers/net/ethernet/intel/ice/ice_eswitch.c b/drivers/net/ethernet/intel/ice/ice_eswitch.c\n> index 2e4f096..c30e27b 100644\n> --- a/drivers/net/ethernet/intel/ice/ice_eswitch.c\n> +++ b/drivers/net/ethernet/intel/ice/ice_eswitch.c\n> @@ -117,8 +117,6 @@ static int ice_eswitch_setup_repr(struct ice_pf *pf, struct ice_repr *repr)\n> \tif (!repr->dst)\n> \t\treturn -ENOMEM;\n> \n> -\tnetif_keep_dst(uplink_vsi->netdev);\n> -\n> \tdst = repr->dst;\n> \tdst->u.port_info.port_id = vsi->vsi_num;\n> \tdst->u.port_info.lower_dev = uplink_vsi->netdev;\n> @@ -312,6 +310,8 @@ static int ice_eswitch_enable_switchdev(struct ice_pf *pf)\n> \tif (ice_eswitch_br_offloads_init(pf))\n> \t\tgoto err_br_offloads;\n> \n> +\tnetif_keep_dst(uplink_vsi->netdev);\n> +\n> \tpf->eswitch.is_running = true;\n> \n> \treturn 0;\n\nReviewed-by: Paul Menzel \n\n\nKind regards,\n\nPaul","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","intel-wired-lan@lists.osuosl.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","intel-wired-lan@lists.osuosl.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=osuosl.org header.i=@osuosl.org header.a=rsa-sha256\n header.s=default header.b=pLdih2pM;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=osuosl.org\n (client-ip=2605:bc80:3010::138; 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charset=UTF-8; format=flowed","Content-Transfer-Encoding":"8bit","X-Mailman-Original-Authentication-Results":"smtp2.osuosl.org;\n dmarc=none (p=none dis=none)\n header.from=molgen.mpg.de","Subject":"Re: [Intel-wired-lan] [PATCH iwl-next v2] ice: call\n netif_keep_dst() once when entering switchdev mode","X-BeenThere":"intel-wired-lan@osuosl.org","X-Mailman-Version":"2.1.30","Precedence":"list","List-Id":"Intel Wired Ethernet Linux Kernel Driver Development\n ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"intel-wired-lan-bounces@osuosl.org","Sender":"\"Intel-wired-lan\" "}},{"id":3677147,"web_url":"http://patchwork.ozlabs.org/comment/3677147/","msgid":"","list_archive_url":null,"date":"2026-04-14T11:44:10","subject":"Re: [Intel-wired-lan] [PATCH iwl-next v2] ice: call\n netif_keep_dst() once when entering switchdev mode","submitter":{"id":92910,"url":"http://patchwork.ozlabs.org/api/people/92910/","name":"Holda, Patryk","email":"patryk.holda@intel.com"},"content":"> -----Original Message-----\n> From: Intel-wired-lan On Behalf Of\n> Paul Menzel\n> Sent: Wednesday, April 8, 2026 4:28 PM\n> To: Loktionov, Aleksandr \n> Cc: intel-wired-lan@lists.osuosl.org; Nguyen, Anthony L\n> ; netdev@vger.kernel.org; Szycik, Marcin\n> \n> Subject: Re: [Intel-wired-lan] [PATCH iwl-next v2] ice: call netif_keep_dst()\n> once when entering switchdev mode\n> \n> Dear Aleksandr, dear Marcin,\n> \n> \n> Thank you for the patch.\n> \n> Am 08.04.26 um 16:14 schrieb Aleksandr Loktionov:\n> > From: Marcin Szycik \n> >\n> > netif_keep_dst() only needs to be called once for the uplink VSI, not\n> > once for each port representor. Move it from ice_eswitch_setup_repr()\n> > to ice_eswitch_enable_switchdev().\n> \n> It’d be great, if you could share the commands, how to verify your change.\n> \n> > Fixes: defd52455aee (\"ice: do Tx through PF netdev in slow-path\")\n> > Signed-off-by: Marcin Szycik \n> > Signed-off-by: Aleksandr Loktionov \n> > ---\n> > v1 -> v2:\n> > - Verified Fixes: tag via bisect - defd52455aee introduced the redundant\n> > per-repr call to netif_keep_dst(uplink_vsi->netdev) by changing the\n> > target netdev to the uplink VSI inside the per-representor setup\n> > function. Before that commit, each call was on a distinct repr->netdev\n> > so no Fixes: predating it applies.\n> >\n> > drivers/net/ethernet/intel/ice/ice_eswitch.c | 4 ++--\n> > 1 file changed, 2 insertions(+), 2 deletions(-)\n> >\n> > diff --git a/drivers/net/ethernet/intel/ice/ice_eswitch.c\n> > b/drivers/net/ethernet/intel/ice/ice_eswitch.c\n> > index 2e4f096..c30e27b 100644\n> > --- a/drivers/net/ethernet/intel/ice/ice_eswitch.c\n> > +++ b/drivers/net/ethernet/intel/ice/ice_eswitch.c\n> > @@ -117,8 +117,6 @@ static int ice_eswitch_setup_repr(struct ice_pf\n> *pf, struct ice_repr *repr)\n> > \tif (!repr->dst)\n> > \t\treturn -ENOMEM;\n> >\n> > -\tnetif_keep_dst(uplink_vsi->netdev);\n> > -\n> > \tdst = repr->dst;\n> > \tdst->u.port_info.port_id = vsi->vsi_num;\n> > \tdst->u.port_info.lower_dev = uplink_vsi->netdev; @@ -312,6 +310,8\n> > @@ static int ice_eswitch_enable_switchdev(struct ice_pf *pf)\n> > \tif (ice_eswitch_br_offloads_init(pf))\n> > \t\tgoto err_br_offloads;\n> >\n> > +\tnetif_keep_dst(uplink_vsi->netdev);\n> > +\n> > \tpf->eswitch.is_running = true;\n> >\n> > \treturn 0;\n> \n> Reviewed-by: Paul Menzel \n> \n> \n> Kind regards,\n> \n> Paul\n\nTested-by: Patryk Holda ","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","intel-wired-lan@lists.osuosl.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","intel-wired-lan@lists.osuosl.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=osuosl.org header.i=@osuosl.org header.a=rsa-sha256\n header.s=default header.b=Ic1FiuEf;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=osuosl.org\n (client-ip=2605:bc80:3010::137; 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