[PATCH 2/3] caif: Add drop count for caif_net device.
From: Sjur Brændeland <hidden>
Date: 2012-02-03 14:36:39
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Count dropped packets in CAIF Netdevice. Signed-off-by: Sjur Brændeland <redacted> --- net/caif/chnl_net.c | 12 ++++++------ 1 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/net/caif/chnl_net.c b/net/caif/chnl_net.c
index 8656909..a751d9b 100644
--- a/net/caif/chnl_net.c
+++ b/net/caif/chnl_net.c@@ -74,7 +74,6 @@ static int chnl_recv_cb(struct cflayer *layr, struct cfpkt *pkt) struct sk_buff *skb; struct chnl_net *priv = container_of(layr, struct chnl_net, chnl); int pktlen; - int err = 0; const u8 *ip_version; u8 buf;
@@ -95,8 +94,7 @@ static int chnl_recv_cb(struct cflayer *layr, struct cfpkt *pkt) /* check the version of IP */ ip_version = skb_header_pointer(skb, 0, 1, &buf); - if (!ip_version) - return -EINVAL; + switch (*ip_version >> 4) { case 4: skb->protocol = htons(ETH_P_IP);
@@ -105,6 +103,7 @@ static int chnl_recv_cb(struct cflayer *layr, struct cfpkt *pkt) skb->protocol = htons(ETH_P_IPV6); break; default: + priv->netdev->stats.rx_errors++; return -EINVAL; }
@@ -123,7 +122,7 @@ static int chnl_recv_cb(struct cflayer *layr, struct cfpkt *pkt) priv->netdev->stats.rx_packets++; priv->netdev->stats.rx_bytes += pktlen; - return err; + return 0; } static int delete_device(struct chnl_net *dev)
@@ -221,11 +220,13 @@ static int chnl_net_start_xmit(struct sk_buff *skb, struct net_device *dev) if (skb->len > priv->netdev->mtu) { pr_warn("Size of skb exceeded MTU\n"); + dev->stats.tx_errors++; return -ENOSPC; } if (!priv->flowenabled) { pr_debug("dropping packets flow off\n"); + dev->stats.tx_dropped++; return NETDEV_TX_BUSY; }
@@ -240,8 +241,7 @@ static int chnl_net_start_xmit(struct sk_buff *skb, struct net_device *dev) /* Send the packet down the stack. */ result = priv->chnl.dn->transmit(priv->chnl.dn, pkt); if (result) { - if (result == -EAGAIN) - result = NETDEV_TX_BUSY; + dev->stats.tx_dropped++; return result; }
--
1.7.5.4