From feeb2721a7a0bd0cfa5b8847f80aec93aa2cc00d Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Wed, 3 Feb 2010 21:59:51 +0000 Subject: igb: make certain to reassign legacy interrupt vectors after reset This change corrects an issue that will cause false hangs when using either 82575 or 82580 in legacy interrupt mode. The issue is caused when there is a slow traffic flow and an "ethtool -r" is executed while using legacy or MSI interrupts. MSI-X is not affected by this issue due to the fact that we were already reconfiguring the vectors after reset. If possible it would be best to push this for net-2.6 since it is resolving a bug but if that is not possible then net-next-2.6 will be fine. Signed-off-by: Alexander Duyck Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/igb/igb_main.c | 20 +++++--------------- 1 file changed, 5 insertions(+), 15 deletions(-) (limited to 'drivers/net') diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index 997124d2992..c881347cb26 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -421,6 +421,8 @@ static void igb_assign_vector(struct igb_q_vector *q_vector, int msix_vector) msixbm = E1000_EICR_RX_QUEUE0 << rx_queue; if (tx_queue > IGB_N0_QUEUE) msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue; + if (!adapter->msix_entries && msix_vector == 0) + msixbm |= E1000_EIMS_OTHER; array_wr32(E1000_MSIXBM(0), msix_vector, msixbm); q_vector->eims_value = msixbm; break; @@ -877,7 +879,6 @@ static int igb_request_irq(struct igb_adapter *adapter) { struct net_device *netdev = adapter->netdev; struct pci_dev *pdev = adapter->pdev; - struct e1000_hw *hw = &adapter->hw; int err = 0; if (adapter->msix_entries) { @@ -909,20 +910,7 @@ static int igb_request_irq(struct igb_adapter *adapter) igb_setup_all_tx_resources(adapter); igb_setup_all_rx_resources(adapter); } else { - switch (hw->mac.type) { - case e1000_82575: - wr32(E1000_MSIXBM(0), - (E1000_EICR_RX_QUEUE0 | - E1000_EICR_TX_QUEUE0 | - E1000_EIMS_OTHER)); - break; - case e1000_82580: - case e1000_82576: - wr32(E1000_IVAR0, E1000_IVAR_VALID); - break; - default: - break; - } + igb_assign_vector(adapter->q_vector[0], 0); } if (adapter->flags & IGB_FLAG_HAS_MSI) { @@ -1140,6 +1128,8 @@ int igb_up(struct igb_adapter *adapter) } if (adapter->msix_entries) igb_configure_msix(adapter); + else + igb_assign_vector(adapter->q_vector[0], 0); /* Clear any pending interrupts. */ rd32(E1000_ICR); -- cgit v1.2.3 From 2d171886b183982feb03446997c65e9e212b948e Mon Sep 17 00:00:00 2001 From: Divy Le Ray Date: Mon, 8 Feb 2010 22:37:24 -0800 Subject: cxgb3: fix GRO checksum check Verify the HW checksum state for frames handed to GRO processing. Signed-off-by: Divy Le Ray Signed-off-by: David S. Miller --- drivers/net/cxgb3/sge.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) (limited to 'drivers/net') diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c index bdbd14727e4..318a018ca7c 100644 --- a/drivers/net/cxgb3/sge.c +++ b/drivers/net/cxgb3/sge.c @@ -2079,6 +2079,7 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs, struct sge_fl *fl, int len, int complete) { struct rx_sw_desc *sd = &fl->sdesc[fl->cidx]; + struct port_info *pi = netdev_priv(qs->netdev); struct sk_buff *skb = NULL; struct cpl_rx_pkt *cpl; struct skb_frag_struct *rx_frag; @@ -2116,11 +2117,18 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs, if (!nr_frags) { offset = 2 + sizeof(struct cpl_rx_pkt); - qs->lro_va = sd->pg_chunk.va + 2; - } - len -= offset; + cpl = qs->lro_va = sd->pg_chunk.va + 2; - prefetch(qs->lro_va); + if ((pi->rx_offload & T3_RX_CSUM) && + cpl->csum_valid && cpl->csum == htons(0xffff)) { + skb->ip_summed = CHECKSUM_UNNECESSARY; + qs->port_stats[SGE_PSTAT_RX_CSUM_GOOD]++; + } else + skb->ip_summed = CHECKSUM_NONE; + } else + cpl = qs->lro_va; + + len -= offset; rx_frag += nr_frags; rx_frag->page = sd->pg_chunk.page; @@ -2136,12 +2144,8 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs, return; skb_record_rx_queue(skb, qs - &adap->sge.qs[0]); - skb->ip_summed = CHECKSUM_UNNECESSARY; - cpl = qs->lro_va; if (unlikely(cpl->vlan_valid)) { - struct net_device *dev = qs->netdev; - struct port_info *pi = netdev_priv(dev); struct vlan_group *grp = pi->vlan_grp; if (likely(grp != NULL)) { -- cgit v1.2.3 From bcf4d812e66ee95f762b38063d654fd1ff7156b0 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Mon, 8 Feb 2010 22:44:18 -0800 Subject: drivers/net: Correct NULL test Test the value that was just allocated rather than the previously tested one. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @r@ expression *x; expression e; identifier l; @@ if (x == NULL || ...) { ... when forall return ...; } ... when != goto l; when != x = e when != &x *x == NULL // Signed-off-by: Julia Lawall Signed-off-by: David S. Miller --- drivers/net/ax88796.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net') diff --git a/drivers/net/ax88796.c b/drivers/net/ax88796.c index 62d9c9cc567..1dd4403247c 100644 --- a/drivers/net/ax88796.c +++ b/drivers/net/ax88796.c @@ -921,7 +921,7 @@ static int ax_probe(struct platform_device *pdev) size = (res->end - res->start) + 1; ax->mem2 = request_mem_region(res->start, size, pdev->name); - if (ax->mem == NULL) { + if (ax->mem2 == NULL) { dev_err(&pdev->dev, "cannot reserve registers\n"); ret = -ENXIO; goto exit_mem1; -- cgit v1.2.3