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Message-Id: <1308355783-22407-4-git-send-email-greearb@candelatech.com>
Date: Fri, 17 Jun 2011 17:09:41 -0700
From: greearb@...delatech.com
To: netdev@...r.kernel.org
Cc: Ben Greear <greearb@...delatech.com>
Subject: [RFC 3/5] e100: Support receiving errored frames.
From: Ben Greear <greearb@...delatech.com>
This can be helpful when sniffing dodgy networks.
Signed-off-by: Ben Greear <greearb@...delatech.com>
---
:100644 100644 647d8c6... aad303d... M drivers/net/e100.c
drivers/net/e100.c | 42 ++++++++++++++++++++++++++++++++++++++++--
1 files changed, 40 insertions(+), 2 deletions(-)
diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index 647d8c6..aad303d 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c
@@ -588,6 +588,7 @@ struct nic {
wol_magic = (1 << 3),
ich_10h_workaround = (1 << 4),
save_rxfcs = (1 << 5),
+ save_rxerr = (1 << 6),
} flags ____cacheline_aligned;
enum mac mac;
@@ -1126,9 +1127,13 @@ static void e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb)
config->full_duplex_force = 0x1; /* 1=force, 0=auto */
if (nic->flags & promiscuous || nic->loopback) {
+ config->promiscuous_mode = 0x1; /* 1=on, 0=off */
+ }
+
+ if (nic->flags & save_rxerr) {
+ config->rx_discard_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 */
- config->promiscuous_mode = 0x1; /* 1=on, 0=off */
}
if (nic->flags & save_rxfcs)
@@ -1983,7 +1988,18 @@ 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 (unlikely(!(rfd_status & cb_ok))) {
+ if (unlikely(nic->flags & save_rxerr)) {
+ if (!(rfd_status & cb_ok)) {
+ skb->pkt_type = PACKET_INVALID;
+ } else if (actual_size >
+ ETH_DATA_LEN + VLAN_ETH_HLEN + rxfcs_pad) {
+ nic->rx_over_length_errors++;
+ skb->pkt_type = PACKET_INVALID;
+ }
+ goto process_skb;
+ }
+
+ if (unlikely((nic->flags & save_rxerr) && !(rfd_status & cb_ok))) {
/* Don't indicate if hardware indicates errors */
dev_kfree_skb_any(skb);
} else if (actual_size > ETH_DATA_LEN + VLAN_ETH_HLEN + rxfcs_pad) {
@@ -1991,6 +2007,7 @@ 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);
@@ -2397,6 +2414,25 @@ static u32 e100_get_save_rxfcs(struct net_device *netdev)
return !!(nic->flags & save_rxfcs);
}
+static int e100_set_save_rxerr(struct net_device *netdev, u32 data)
+{
+ struct nic *nic = netdev_priv(netdev);
+ if (data)
+ nic->flags |= save_rxerr;
+ else
+ nic->flags &= ~save_rxerr;
+
+ e100_exec_cb(nic, NULL, e100_configure);
+
+ return 0;
+}
+
+static u32 e100_get_save_rxerr(struct net_device *netdev)
+{
+ struct nic *nic = netdev_priv(netdev);
+ return !!(nic->flags & save_rxerr);
+}
+
static void e100_get_drvinfo(struct net_device *netdev,
struct ethtool_drvinfo *info)
{
@@ -2718,6 +2754,8 @@ static const struct ethtool_ops e100_ethtool_ops = {
.get_sset_count = e100_get_sset_count,
.set_save_rxfcs = e100_set_save_rxfcs,
.get_save_rxfcs = e100_get_save_rxfcs,
+ .set_save_rxerr = e100_set_save_rxerr,
+ .get_save_rxerr = e100_get_save_rxerr,
};
static int e100_do_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
--
1.7.3.4
--
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