diff options
Diffstat (limited to 'arch/um/os-Linux/drivers/ethertap_kern.c')
-rw-r--r-- | arch/um/os-Linux/drivers/ethertap_kern.c | 52 |
1 files changed, 22 insertions, 30 deletions
diff --git a/arch/um/os-Linux/drivers/ethertap_kern.c b/arch/um/os-Linux/drivers/ethertap_kern.c index 12689141414..04f11b9f1ac 100644 --- a/arch/um/os-Linux/drivers/ethertap_kern.c +++ b/arch/um/os-Linux/drivers/ethertap_kern.c @@ -1,16 +1,15 @@ /* - * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and + * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and * James Leu (jleu@mindspring.net). + * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) * Copyright (C) 2001 by various other people who didn't put their name here. * Licensed under the GPL. */ #include "linux/init.h" -#include "linux/netdevice.h" -#include "linux/etherdevice.h" -#include "net_kern.h" -#include "net_user.h" +#include <linux/netdevice.h> #include "etap.h" +#include "net_kern.h" struct ethertap_init { char *dev_name; @@ -37,32 +36,24 @@ static void etap_init(struct net_device *dev, void *data) printk("\n"); } -static int etap_read(int fd, struct sk_buff **skb, struct uml_net_private *lp) +static int etap_read(int fd, struct sk_buff *skb, struct uml_net_private *lp) { int len; - *skb = ether_adjust_skb(*skb, ETH_HEADER_ETHERTAP); - if(*skb == NULL) return(-ENOMEM); - len = net_recvfrom(fd, skb_mac_header(*skb), - (*skb)->dev->mtu + 2 * ETH_HEADER_ETHERTAP); - if(len <= 0) return(len); - skb_pull(*skb, 2); + len = net_recvfrom(fd, skb_mac_header(skb), + skb->dev->mtu + 2 + ETH_HEADER_ETHERTAP); + if (len <= 0) + return(len); + + skb_pull(skb, 2); len -= 2; - return(len); + return len; } -static int etap_write(int fd, struct sk_buff **skb, struct uml_net_private *lp) +static int etap_write(int fd, struct sk_buff *skb, struct uml_net_private *lp) { - if(skb_headroom(*skb) < 2){ - struct sk_buff *skb2; - - skb2 = skb_realloc_headroom(*skb, 2); - dev_kfree_skb(*skb); - if (skb2 == NULL) return(-ENOMEM); - *skb = skb2; - } - skb_push(*skb, 2); - return(net_send(fd, (*skb)->data, (*skb)->len)); + skb_push(skb, 2); + return net_send(fd, skb->data, skb->len); } const struct net_kern_info ethertap_kern_info = { @@ -79,15 +70,15 @@ int ethertap_setup(char *str, char **mac_out, void *data) *init = ((struct ethertap_init) { .dev_name = NULL, .gate_addr = NULL }); - if(tap_setup_common(str, "ethertap", &init->dev_name, mac_out, + if (tap_setup_common(str, "ethertap", &init->dev_name, mac_out, &init->gate_addr)) - return(0); - if(init->dev_name == NULL){ - printk("ethertap_setup : Missing tap device name\n"); - return(0); + return 0; + if (init->dev_name == NULL) { + printk(KERN_ERR "ethertap_setup : Missing tap device name\n"); + return 0; } - return(1); + return 1; } static struct transport ethertap_transport = { @@ -97,6 +88,7 @@ static struct transport ethertap_transport = { .user = ðertap_user_info, .kern = ðertap_kern_info, .private_size = sizeof(struct ethertap_data), + .setup_size = sizeof(struct ethertap_init), }; static int register_ethertap(void) |