Quote:
int (*hard_start_xmit) (struct sk_buff *skb, struct net_device *dev);
Method that initiates the transmission of a packet. The full packet (protocol
headers and all) is contained in a socket buffer (sk_buff) structure. Socket buffers
are introduced later in this chapter.
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In the source, not sure you'll find something...
Maybe there :
net/core/dev.c
Get Linux Kernel device driver 3