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Shell Programming and Scripting
shell script to convert file_size from bytes to megabytes
Post 302341828 by a1_win on Thursday 6th of August 2009 04:31:15 PM
08-06-2009
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LEARN ABOUT SUSE
__skb_recv_datagram
__SKB_RECV_DATAGRAM(9) Linux Networking __SKB_RECV_DATAGRAM(9) NAME
__skb_recv_datagram - Receive a datagram skbuff SYNOPSIS
struct sk_buff * __skb_recv_datagram(struct sock * sk, unsigned flags, int * peeked, int * err); ARGUMENTS
sk socket flags MSG_ flags peeked returns non-zero if this packet has been seen before err error code returned DESCRIPTION
Get a datagram skbuff, understands the peeking, nonblocking wakeups and possible races. This replaces identical code in packet, raw and udp, as well as the IPX AX.25 and Appletalk. It also finally fixes the long standing peek and read race for datagram sockets. If you alter this routine remember it must be re-entrant. This function will lock the socket if a skb is returned, so the caller needs to unlock the socket in that case (usually by calling skb_free_datagram) * It does not lock socket since today. This function is * free of race conditions. This measure should/can improve * significantly datagram socket latencies at high loads, * when data copying to user space takes lots of time. * (BTW I've just killed the last cli in IP/IPv6/core/netlink/packet * 8) Great win.) * --ANK (980729) The order of the tests when we find no data waiting are specified quite explicitly by POSIX 1003.1g, don't change them without having the standard around please. COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 __SKB_RECV_DATAGRAM(9)