From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-next PATCH 5/8] igb: add PF to pool Date: Fri, 13 Mar 2009 23:41:37 -0700 Message-ID: <20090314064136.4052.86331.stgit@lost.foo-projects.org> References: <20090314064020.4052.46249.stgit@lost.foo-projects.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, gospo@redhat.com, Alexander Duyck , Jeff Kirsher To: davem@davemloft.net Return-path: Received: from qmta06.emeryville.ca.mail.comcast.net ([76.96.30.56]:35944 "EHLO QMTA06.emeryville.ca.mail.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752060AbZCNGl4 (ORCPT ); Sat, 14 Mar 2009 02:41:56 -0400 In-Reply-To: <20090314064020.4052.46249.stgit@lost.foo-projects.org> Sender: netdev-owner@vger.kernel.org List-ID: From: Alexander Duyck Add Pf to pool if adding a VLVF register value and the VFTA bit is already set. This patch addresses the unlikely situation that the PF adds a vlan entry when the vlvf is full, and a vf later adds the vlan to the vlvf. Signed-off-by: Alexander Duyck Signed-off-by: Jeff Kirsher --- drivers/net/igb/e1000_mac.c | 21 ++++++++++++++------- drivers/net/igb/e1000_mac.h | 2 +- drivers/net/igb/igb_main.c | 9 +++++++-- 3 files changed, 22 insertions(+), 10 deletions(-) diff --git a/drivers/net/igb/e1000_mac.c b/drivers/net/igb/e1000_mac.c index 2804db0..f11592f 100644 --- a/drivers/net/igb/e1000_mac.c +++ b/drivers/net/igb/e1000_mac.c @@ -126,19 +126,26 @@ void igb_write_vfta(struct e1000_hw *hw, u32 offset, u32 value) * Sets or clears a bit in the VLAN filter table array based on VLAN id * and if we are adding or removing the filter **/ -void igb_vfta_set(struct e1000_hw *hw, u32 vid, bool add) +s32 igb_vfta_set(struct e1000_hw *hw, u32 vid, bool add) { u32 index = (vid >> E1000_VFTA_ENTRY_SHIFT) & E1000_VFTA_ENTRY_MASK; u32 mask = 1 < (vid & E1000_VFTA_ENTRY_BIT_SHIFT_MASK); - u32 vfta; + u32 vfta = array_rd32(E1000_VFTA, index); + s32 ret_val = 0; - vfta = array_rd32(E1000_VFTA, index); - if (add) - vfta |= mask; - else - vfta &= ~mask; + /* bit was set/cleared before we started */ + if ((!!(vfta & mask)) == add) { + ret_val = -E1000_ERR_CONFIG; + } else { + if (add) + vfta |= mask; + else + vfta &= ~mask; + } igb_write_vfta(hw, index, vfta); + + return ret_val; } /** diff --git a/drivers/net/igb/e1000_mac.h b/drivers/net/igb/e1000_mac.h index eccc353..a34de52 100644 --- a/drivers/net/igb/e1000_mac.h +++ b/drivers/net/igb/e1000_mac.h @@ -58,7 +58,7 @@ s32 igb_write_8bit_ctrl_reg(struct e1000_hw *hw, u32 reg, void igb_clear_hw_cntrs_base(struct e1000_hw *hw); void igb_clear_vfta(struct e1000_hw *hw); -void igb_vfta_set(struct e1000_hw *hw, u32 vid, bool add); +s32 igb_vfta_set(struct e1000_hw *hw, u32 vid, bool add); void igb_config_collision_dist(struct e1000_hw *hw); void igb_mta_set(struct e1000_hw *hw, u32 hash_value); void igb_put_hw_semaphore(struct e1000_hw *hw); diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index 4e2cb82..d972f91 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -3873,10 +3873,15 @@ static s32 igb_vlvf_set(struct igb_adapter *adapter, u32 vid, bool add, u32 vf) /* if !enabled we need to set this up in vfta */ if (!(reg & E1000_VLVF_VLANID_ENABLE)) { - /* add VID to filter table */ - igb_vfta_set(hw, vid, true); + /* add VID to filter table, if bit already set + * PF must have added it outside of table */ + if (igb_vfta_set(hw, vid, true)) + reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + + adapter->vfs_allocated_count); reg |= E1000_VLVF_VLANID_ENABLE; } + reg &= ~E1000_VLVF_VLANID_MASK; + reg |= vid; wr32(E1000_VLVF(i), reg); return 0;