[PATCH v2 09/10] e100: Support RXALL feature flag.
From: <hidden>
Date: 2012-02-08 19:56:30
Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Ben Greear <redacted> This allows the NIC to receive packets with bad FCS and other errors. Good for sniffing packets on flakey networks. Signed-off-by: Ben Greear <redacted> --- :100644 100644 c793939... a296ec4... M drivers/net/ethernet/intel/e100.c drivers/net/ethernet/intel/e100.c | 22 ++++++++++++++++++++-- 1 files changed, 20 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/intel/e100.c b/drivers/net/ethernet/intel/e100.c
index c793939..a296ec4 100644
--- a/drivers/net/ethernet/intel/e100.c
+++ b/drivers/net/ethernet/intel/e100.c@@ -462,7 +462,7 @@ struct config { /*5*/ u8 X(tx_dma_max_count:7, dma_max_count_enable:1); /*6*/ u8 X(X(X(X(X(X(X(late_scb_update:1, direct_rx_dma:1), tno_intr:1), cna_intr:1), standard_tcb:1), standard_stat_counter:1), - rx_discard_overruns:1), rx_save_bad_frames:1); + rx_save_overruns : 1), rx_save_bad_frames : 1); /*7*/ u8 X(X(X(X(X(rx_discard_short_frames:1, tx_underrun_retry:2), pad7:2), rx_extended_rfd:1), tx_two_frames_in_fifo:1), tx_dynamic_tbd:1);
@@ -1165,6 +1165,12 @@ static void e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb) } } + if (netdev->features & NETIF_F_RXALL) { + config->rx_save_overruns = 0x1; /* 1=save, 0=discard */ + config->rx_save_bad_frames = 0x1; /* 1=save, 0=discard */ + config->rx_discard_short_frames = 0x0; /* 1=discard, 0=save */ + } + netif_printk(nic, hw, KERN_DEBUG, nic->netdev, "[00-07]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n", c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7]);
@@ -1999,6 +2005,16 @@ static int e100_rx_indicate(struct nic *nic, struct rx *rx, skb_put(skb, actual_size); skb->protocol = eth_type_trans(skb, nic->netdev); + /* If we are receiving all frames, then don't bother + * checking for errors. + */ + if (unlikely(dev->features & NETIF_F_RXALL)) { + if (actual_size > nic->netdev->mtu + VLAN_ETH_HLEN) + /* Received oversized frame */ + dev->stats.rx_over_errors++; + goto process_skb; + } + if (unlikely(!(rfd_status & cb_ok))) { /* Don't indicate if hardware indicates errors */ dev_kfree_skb_any(skb);
@@ -2007,6 +2023,7 @@ static int e100_rx_indicate(struct nic *nic, struct rx *rx, nic->rx_over_length_errors++; dev_kfree_skb_any(skb); } else { +process_skb: dev->stats.rx_packets++; dev->stats.rx_bytes += actual_size; netif_receive_skb(skb);
@@ -2757,7 +2774,7 @@ static int e100_set_features(struct net_device *netdev, struct nic *nic = netdev_priv(netdev); netdev_features_t changed = features ^ netdev->features; - if (!(changed & (NETIF_F_RXFCS))) + if (!(changed & (NETIF_F_RXFCS | NETIF_F_RXALL))) return 0; netdev->features = features;
@@ -2793,6 +2810,7 @@ static int __devinit e100_probe(struct pci_dev *pdev, netdev->hw_features |= NETIF_F_RXFCS; netdev->priv_flags |= IFF_SUPP_NOFCS; + netdev->hw_features |= NETIF_F_RXALL; netdev->netdev_ops = &e100_netdev_ops; SET_ETHTOOL_OPS(netdev, &e100_ethtool_ops);
--
1.7.3.4