From da614d042ac236e5db52c56c7d7d8accd325dd40 Mon Sep 17 00:00:00 2001 From: Emil Tantilov Date: Fri, 20 Jan 2017 14:11:50 -0800 Subject: ixgbe: return early instead of wrap block in if statement Since we exit at the end of the block, we can save a level of indentation by performing an early return, and make the next several sections of code more legible, with fewer 80 character line breaks. Also moved allocating vfinfo at the beginning and the notification for enabling SRIOV at the end of the function when we know that it will succeed. Signed-off-by: Emil Tantilov Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 85 +++++++++++++------------- 1 file changed, 41 insertions(+), 44 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c index d10b25fa0be4..16952d33730e 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c @@ -74,9 +74,9 @@ static inline void ixgbe_alloc_vf_macvlans(struct ixgbe_adapter *adapter) static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; + int i; adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED; - e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs); /* Enable VMDq flag so device will be set in VM mode */ adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED; @@ -84,60 +84,57 @@ static int __ixgbe_enable_sriov(struct ixgbe_adapter *adapter) adapter->ring_feature[RING_F_VMDQ].limit = 1; adapter->ring_feature[RING_F_VMDQ].offset = adapter->num_vfs; - /* Initialize default switching mode VEB */ - IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); - adapter->bridge_mode = BRIDGE_MODE_VEB; - - ixgbe_alloc_vf_macvlans(adapter); - /* If call to enable VFs succeeded then allocate memory * for per VF control structures. */ - adapter->vfinfo = - kcalloc(adapter->num_vfs, - sizeof(struct vf_data_storage), GFP_KERNEL); - if (adapter->vfinfo) { - int i; - - /* limit trafffic classes based on VFs enabled */ - if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && - (adapter->num_vfs < 16)) { - adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; - adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; - } else if (adapter->num_vfs < 32) { - adapter->dcb_cfg.num_tcs.pg_tcs = 4; - adapter->dcb_cfg.num_tcs.pfc_tcs = 4; - } else { - adapter->dcb_cfg.num_tcs.pg_tcs = 1; - adapter->dcb_cfg.num_tcs.pfc_tcs = 1; - } + adapter->vfinfo = kcalloc(adapter->num_vfs, + sizeof(struct vf_data_storage), GFP_KERNEL); + if (!adapter->vfinfo) + return -ENOMEM; + + ixgbe_alloc_vf_macvlans(adapter); + + /* Initialize default switching mode VEB */ + IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); + adapter->bridge_mode = BRIDGE_MODE_VEB; - /* Disable RSC when in SR-IOV mode */ - adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | - IXGBE_FLAG2_RSC_ENABLED); + /* limit trafffic classes based on VFs enabled */ + if ((adapter->hw.mac.type == ixgbe_mac_82599EB) && + (adapter->num_vfs < 16)) { + adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; + adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; + } else if (adapter->num_vfs < 32) { + adapter->dcb_cfg.num_tcs.pg_tcs = 4; + adapter->dcb_cfg.num_tcs.pfc_tcs = 4; + } else { + adapter->dcb_cfg.num_tcs.pg_tcs = 1; + adapter->dcb_cfg.num_tcs.pfc_tcs = 1; + } - for (i = 0; i < adapter->num_vfs; i++) { - /* enable spoof checking for all VFs */ - adapter->vfinfo[i].spoofchk_enabled = true; + /* Disable RSC when in SR-IOV mode */ + adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE | + IXGBE_FLAG2_RSC_ENABLED); - /* We support VF RSS querying only for 82599 and x540 - * devices at the moment. These devices share RSS - * indirection table and RSS hash key with PF therefore - * we want to disable the querying by default. - */ - adapter->vfinfo[i].rss_query_enabled = 0; + for (i = 0; i < adapter->num_vfs; i++) { + /* enable spoof checking for all VFs */ + adapter->vfinfo[i].spoofchk_enabled = true; - /* Untrust all VFs */ - adapter->vfinfo[i].trusted = false; + /* We support VF RSS querying only for 82599 and x540 + * devices at the moment. These devices share RSS + * indirection table and RSS hash key with PF therefore + * we want to disable the querying by default. + */ + adapter->vfinfo[i].rss_query_enabled = 0; - /* set the default xcast mode */ - adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE; - } + /* Untrust all VFs */ + adapter->vfinfo[i].trusted = false; - return 0; + /* set the default xcast mode */ + adapter->vfinfo[i].xcast_mode = IXGBEVF_XCAST_MODE_NONE; } - return -ENOMEM; + e_info(probe, "SR-IOV enabled with %d VFs\n", adapter->num_vfs); + return 0; } /** -- cgit v1.2.3-59-g8ed1b