From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-next-2.6 PATCH 06/11] ixgbe: Enable FCoE redirection table feature in 82599 Date: Sun, 17 May 2009 15:34:14 -0700 Message-ID: <20090517223413.14124.35244.stgit@localhost.localdomain> References: <20090517223213.14124.61405.stgit@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20090517223213.14124.61405.stgit@localhost.localdomain> Sender: netdev-owner@vger.kernel.org To: davem@davemloft.net Cc: netdev@vger.kernel.org, linux-scsi@vger.kernel.org, Yi Zou , Jeff Kirsher List-Id: linux-scsi@vger.kernel.org From: Yi Zou Enable using FCoE redirection table feature in 82599. The FCoE redirection table has maximum of eight entries, corresponding to maximum of eight receive queues to be used for distributing incoming FCoE packets. This patch sets up the FCoE redirection table when multiple receive queues are available for FCoE. Signed-off-by: Yi Zou Signed-off-by: Jeff Kirsher --- drivers/net/ixgbe/ixgbe_fcoe.c | 28 ++++++++++++++++++++++++---- 1 files changed, 24 insertions(+), 4 deletions(-) diff --git a/drivers/net/ixgbe/ixgbe_fcoe.c b/drivers/net/ixgbe/ixgbe_fcoe.c index a11c620..d5939de 100644 --- a/drivers/net/ixgbe/ixgbe_fcoe.c +++ b/drivers/net/ixgbe/ixgbe_fcoe.c @@ -482,8 +482,10 @@ int ixgbe_fso(struct ixgbe_adapter *adapter, */ void ixgbe_configure_fcoe(struct ixgbe_adapter *adapter) { + int i, fcoe_q, fcoe_i; struct ixgbe_hw *hw = &adapter->hw; struct ixgbe_fcoe *fcoe = &adapter->fcoe; + struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE]; /* create the pool for ddp if not created yet */ if (!fcoe->pool) { @@ -497,12 +499,30 @@ void ixgbe_configure_fcoe(struct ixgbe_adapter *adapter) spin_lock_init(&fcoe->lock); } - /* L2 filter for FCoE: default to queue 0 */ + + /* Enable L2 eth type filter for FCoE */ IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FCOE), (ETH_P_FCOE | IXGBE_ETQF_FCOE | IXGBE_ETQF_FILTER_EN)); - IXGBE_WRITE_REG(hw, IXGBE_FCRECTL, 0); - IXGBE_WRITE_REG(hw, IXGBE_ETQS(IXGBE_ETQF_FILTER_FCOE), - IXGBE_ETQS_QUEUE_EN); + if (adapter->ring_feature[RING_F_FCOE].indices) { + /* Use multiple rx queues for FCoE by redirection table */ + for (i = 0; i < IXGBE_FCRETA_SIZE; i++) { + fcoe_i = f->mask + i % f->indices; + fcoe_i &= IXGBE_FCRETA_ENTRY_MASK; + fcoe_q = adapter->rx_ring[fcoe_i].reg_idx; + IXGBE_WRITE_REG(hw, IXGBE_FCRETA(i), fcoe_q); + } + IXGBE_WRITE_REG(hw, IXGBE_FCRECTL, IXGBE_FCRECTL_ENA); + IXGBE_WRITE_REG(hw, IXGBE_ETQS(IXGBE_ETQF_FILTER_FCOE), 0); + } else { + /* Use single rx queue for FCoE */ + fcoe_i = f->mask; + fcoe_q = adapter->rx_ring[fcoe_i].reg_idx; + IXGBE_WRITE_REG(hw, IXGBE_FCRECTL, 0); + IXGBE_WRITE_REG(hw, IXGBE_ETQS(IXGBE_ETQF_FILTER_FCOE), + IXGBE_ETQS_QUEUE_EN | + (fcoe_q << IXGBE_ETQS_RX_QUEUE_SHIFT)); + } + IXGBE_WRITE_REG(hw, IXGBE_FCRXCTRL, IXGBE_FCRXCTRL_FCOELLI | IXGBE_FCRXCTRL_FCCRCBO |