From 83ec8857a00ff11cb3abc4d7c003de8ea103b715 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Thu, 8 Nov 2018 19:50:35 -0800 Subject: [PATCH] nfp: parse vNIC TLV capabilities at alloc time In certain cases initialization logic which follows allocation of the vNIC structure may want to validate the capabilities of that vNIC. This is easy before vNIC is initialized for normal capabilities which are at fixed offsets in control memory, easy to locate and read, but poses a challenge if the capabilities are in form of TLVs. Parse the TLVs early on so other code can just access parsed info, instead of having to do the parsing by itself. Signed-off-by: Jakub Kicinski Reviewed-by: John Hurley Reviewed-by: Quentin Monnet Signed-off-by: David S. Miller --- .../ethernet/netronome/nfp/nfp_net_common.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c index 54ce8353715f..e00d5a2a41ee 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c @@ -3576,6 +3576,7 @@ nfp_net_alloc(struct pci_dev *pdev, void __iomem *ctrl_bar, bool needs_netdev, unsigned int max_tx_rings, unsigned int max_rx_rings) { struct nfp_net *nn; + int err; if (needs_netdev) { struct net_device *netdev; @@ -3618,7 +3619,19 @@ nfp_net_alloc(struct pci_dev *pdev, void __iomem *ctrl_bar, bool needs_netdev, timer_setup(&nn->reconfig_timer, nfp_net_reconfig_timer, 0); + err = nfp_net_tlv_caps_parse(&nn->pdev->dev, nn->dp.ctrl_bar, + &nn->tlv_caps); + if (err) + goto err_free_nn; + return nn; + +err_free_nn: + if (nn->dp.netdev) + free_netdev(nn->dp.netdev); + else + vfree(nn); + return ERR_PTR(err); } /** @@ -3891,11 +3904,6 @@ int nfp_net_init(struct nfp_net *nn) nn->dp.ctrl |= NFP_NET_CFG_CTRL_IRQMOD; } - err = nfp_net_tlv_caps_parse(&nn->pdev->dev, nn->dp.ctrl_bar, - &nn->tlv_caps); - if (err) - return err; - if (nn->dp.netdev) nfp_net_netdev_init(nn); -- 2.45.2