diff options
Diffstat (limited to 'net/caif/chnl_net.c')
| -rw-r--r-- | net/caif/chnl_net.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/net/caif/chnl_net.c b/net/caif/chnl_net.c index 865690948bbc..20618dd3088b 100644 --- a/net/caif/chnl_net.c +++ b/net/caif/chnl_net.c @@ -28,6 +28,7 @@ /* 5 sec. connect timeout */ #define CONNECT_TIMEOUT (5 * HZ) #define CAIF_NET_DEFAULT_QUEUE_LEN 500 +#define UNDEF_CONNID 0xffffffff /*This list is protected by the rtnl lock. */ static LIST_HEAD(chnl_net_list); @@ -72,14 +73,12 @@ static void robust_list_del(struct list_head *delete_node) 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); + struct chnl_net *priv; int pktlen; - int err = 0; const u8 *ip_version; u8 buf; priv = container_of(layr, struct chnl_net, chnl); - if (!priv) return -EINVAL; @@ -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; } @@ -409,7 +409,7 @@ static void ipcaif_net_setup(struct net_device *dev) priv->conn_req.link_selector = CAIF_LINK_HIGH_BANDW; priv->conn_req.priority = CAIF_PRIO_LOW; /* Insert illegal value */ - priv->conn_req.sockaddr.u.dgm.connection_id = 0; + priv->conn_req.sockaddr.u.dgm.connection_id = UNDEF_CONNID; priv->flowenabled = false; init_waitqueue_head(&priv->netmgmt_wq); @@ -472,9 +472,11 @@ static int ipcaif_newlink(struct net *src_net, struct net_device *dev, else list_add(&caifdev->list_field, &chnl_net_list); - /* Take ifindex as connection-id if null */ - if (caifdev->conn_req.sockaddr.u.dgm.connection_id == 0) + /* Use ifindex as connection id, and use loopback channel default. */ + if (caifdev->conn_req.sockaddr.u.dgm.connection_id == UNDEF_CONNID) { caifdev->conn_req.sockaddr.u.dgm.connection_id = dev->ifindex; + caifdev->conn_req.protocol = CAIFPROTO_DATAGRAM_LOOP; + } return ret; } |