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d="scan'208";a="7421799" Received: from unknown (HELO mev-dev) ([10.237.112.144]) by fmviesa003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Feb 2024 02:01:12 -0800 Date: Tue, 13 Feb 2024 11:01:08 +0100 From: Michal Swiatkowski To: Jiri Pirko Message-ID: References: <20240213073509.77622-1-michal.swiatkowski@linux.intel.com> <20240213073509.77622-2-michal.swiatkowski@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1707818476; x=1739354476; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=a6wpWKZPkcC/8/bakQZqtczHaevmk6f9hWDKjFCqlzQ=; b=MyZpRCZ0i5NkKrhBkA7VQpQtunYJ9RTx1HJvpAEQ3JFB7xye6RpmVwWs Qjixp1joMip+v4Hux+gHD4WAymwTQ0Q8wY6Z9663J0yxgaKQoY2NBDkeS BOhVVDxwDvT5xeBbCBwMNJxZCbk4Ge8QqJDOItUsS7Rjo/U+G+ZBqb91w pSiKu523+iMOLM14E9EOt1B6B8W87S+bKYsmlp+1dw1hdHe6fM2KAbfN9 UBpdteK2zX9H2dV2C05x2lTX0LbgFgp7bX0TcdRB208xHUzBkIPbmjMio m61ioWuKT4T2KgSc/FZ0omCKVaUJLh6SvpySbjnHVvTQ7qUcWLGBxG4wJ Q==; X-Mailman-Original-Authentication-Results: smtp2.osuosl.org; dmarc=none (p=none dis=none) header.from=linux.intel.com X-Mailman-Original-Authentication-Results: smtp2.osuosl.org; dkim=pass (2048-bit key, unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=MyZpRCZ0 Subject: Re: [Intel-wired-lan] [iwl-next v1 1/7] ice: devlink PF MSI-X max and min parameter X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wojciech.drewek@intel.com, marcin.szycik@intel.com, netdev@vger.kernel.org, konrad.knitter@intel.com, pawel.chmielewski@intel.com, intel-wired-lan@lists.osuosl.org, nex.sw.ncis.nat.hpm.dev@intel.com, pio.raczynski@gmail.com, sridhar.samudrala@intel.com, jacob.e.keller@intel.com, przemyslaw.kitszel@intel.com Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" On Tue, Feb 13, 2024 at 10:03:05AM +0100, Jiri Pirko wrote: > Tue, Feb 13, 2024 at 08:35:03AM CET, michal.swiatkowski@linux.intel.com wrote: > >Use generic devlink PF MSI-X parameter to allow user to change MSI-X > >range. > > > >Reviewed-by: Wojciech Drewek > >Signed-off-by: Michal Swiatkowski > >--- > > drivers/net/ethernet/intel/ice/ice.h | 8 ++ > > drivers/net/ethernet/intel/ice/ice_devlink.c | 82 ++++++++++++++++++++ > > drivers/net/ethernet/intel/ice/ice_irq.c | 6 ++ > > 3 files changed, 96 insertions(+) > > > >diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h > >index c4127d5f2be3..24085f3c0966 100644 > >--- a/drivers/net/ethernet/intel/ice/ice.h > >+++ b/drivers/net/ethernet/intel/ice/ice.h > >@@ -94,6 +94,7 @@ > > #define ICE_MIN_LAN_TXRX_MSIX 1 > > #define ICE_MIN_LAN_OICR_MSIX 1 > > #define ICE_MIN_MSIX (ICE_MIN_LAN_TXRX_MSIX + ICE_MIN_LAN_OICR_MSIX) > >+#define ICE_MAX_MSIX 256 > > #define ICE_FDIR_MSIX 2 > > #define ICE_RDMA_NUM_AEQ_MSIX 4 > > #define ICE_MIN_RDMA_MSIX 2 > >@@ -535,6 +536,12 @@ struct ice_agg_node { > > u8 valid; > > }; > > > >+struct ice_pf_msix { > >+ u16 cur; > >+ u16 min; > >+ u16 max; > >+}; > >+ > > struct ice_pf { > > struct pci_dev *pdev; > > > >@@ -604,6 +611,7 @@ struct ice_pf { > > struct msi_map ll_ts_irq; /* LL_TS interrupt MSIX vector */ > > u16 max_pf_txqs; /* Total Tx queues PF wide */ > > u16 max_pf_rxqs; /* Total Rx queues PF wide */ > >+ struct ice_pf_msix msix; > > u16 num_lan_msix; /* Total MSIX vectors for base driver */ > > u16 num_lan_tx; /* num LAN Tx queues setup */ > > u16 num_lan_rx; /* num LAN Rx queues setup */ > >diff --git a/drivers/net/ethernet/intel/ice/ice_devlink.c b/drivers/net/ethernet/intel/ice/ice_devlink.c > >index cc717175178b..b82ff9556a4b 100644 > >--- a/drivers/net/ethernet/intel/ice/ice_devlink.c > >+++ b/drivers/net/ethernet/intel/ice/ice_devlink.c > >@@ -1603,6 +1603,78 @@ enum ice_param_id { > > ICE_DEVLINK_PARAM_ID_LOOPBACK, > > }; > > > >+static int > >+ice_devlink_msix_max_pf_get(struct devlink *devlink, u32 id, > >+ struct devlink_param_gset_ctx *ctx) > >+{ > >+ struct ice_pf *pf = devlink_priv(devlink); > >+ > >+ ctx->val.vu16 = pf->msix.max; > >+ > >+ return 0; > >+} > >+ > >+static int > >+ice_devlink_msix_max_pf_set(struct devlink *devlink, u32 id, > >+ struct devlink_param_gset_ctx *ctx) > >+{ > >+ struct ice_pf *pf = devlink_priv(devlink); > >+ u16 max = ctx->val.vu16; > >+ > >+ pf->msix.max = max; > > What's permanent about this exactly? > I want to store the value here after driver reinit. Isn't it enough to use this parameter type? Which one should be used for this purpose? > > >+ > >+ return 0; > >+} > >+ > >+static int > >+ice_devlink_msix_max_pf_validate(struct devlink *devlink, u32 id, > >+ union devlink_param_value val, > >+ struct netlink_ext_ack *extack) > >+{ > >+ if (val.vu16 > ICE_MAX_MSIX) { > >+ NL_SET_ERR_MSG_MOD(extack, "PF max MSI-X is too high"); > >+ return -EINVAL; > >+ } > >+ > >+ return 0; > >+} > >+ > >+static int > >+ice_devlink_msix_min_pf_get(struct devlink *devlink, u32 id, > >+ struct devlink_param_gset_ctx *ctx) > >+{ > >+ struct ice_pf *pf = devlink_priv(devlink); > >+ > >+ ctx->val.vu16 = pf->msix.min; > >+ > >+ return 0; > >+} > >+ > >+static int > >+ice_devlink_msix_min_pf_set(struct devlink *devlink, u32 id, > >+ struct devlink_param_gset_ctx *ctx) > >+{ > >+ struct ice_pf *pf = devlink_priv(devlink); > >+ u16 min = ctx->val.vu16; > >+ > >+ pf->msix.min = min; > > What's permanent about this exactly? > The same as with max. > > >+ > >+ return 0; > >+} > >+ > >+static int > >+ice_devlink_msix_min_pf_validate(struct devlink *devlink, u32 id, > >+ union devlink_param_value val, > >+ struct netlink_ext_ack *extack) > >+{ > >+ if (val.vu16 <= ICE_MIN_MSIX) { > >+ NL_SET_ERR_MSG_MOD(extack, "PF min MSI-X is too low"); > >+ return -EINVAL; > >+ } > >+ > >+ return 0; > >+} > >+ > > static const struct devlink_param ice_devlink_params[] = { > > DEVLINK_PARAM_GENERIC(ENABLE_ROCE, BIT(DEVLINK_PARAM_CMODE_RUNTIME), > > ice_devlink_enable_roce_get, > >@@ -1618,6 +1690,16 @@ static const struct devlink_param ice_devlink_params[] = { > > ice_devlink_loopback_get, > > ice_devlink_loopback_set, > > ice_devlink_loopback_validate), > >+ DEVLINK_PARAM_GENERIC(MSIX_VEC_PER_PF_MAX, > >+ BIT(DEVLINK_PARAM_CMODE_PERMANENT), > >+ ice_devlink_msix_max_pf_get, > >+ ice_devlink_msix_max_pf_set, > >+ ice_devlink_msix_max_pf_validate), > >+ DEVLINK_PARAM_GENERIC(MSIX_VEC_PER_PF_MIN, > >+ BIT(DEVLINK_PARAM_CMODE_PERMANENT), > > .... > > > pw-bot: cr > > > >+ ice_devlink_msix_min_pf_get, > >+ ice_devlink_msix_min_pf_set, > >+ ice_devlink_msix_min_pf_validate), > > }; > > > > static void ice_devlink_free(void *devlink_ptr) > >diff --git a/drivers/net/ethernet/intel/ice/ice_irq.c b/drivers/net/ethernet/intel/ice/ice_irq.c > >index ad82ff7d1995..fa7178a68b94 100644 > >--- a/drivers/net/ethernet/intel/ice/ice_irq.c > >+++ b/drivers/net/ethernet/intel/ice/ice_irq.c > >@@ -254,6 +254,12 @@ int ice_init_interrupt_scheme(struct ice_pf *pf) > > int total_vectors = pf->hw.func_caps.common_cap.num_msix_vectors; > > int vectors, max_vectors; > > > >+ /* load default PF MSI-X range */ > >+ if (!pf->msix.min) > >+ pf->msix.min = ICE_MIN_MSIX; > >+ if (!pf->msix.max) > >+ pf->msix.max = total_vectors / 2; > >+ > > vectors = ice_ena_msix_range(pf); > > > > if (vectors < 0) > >-- > >2.42.0 > > > >