Adding upstream version 4.22.0.upstream/4.22.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 69 insertions, 0 deletions

diff --git a/upstream/mageia-cauldron/man9/skb_unlink.9 b/upstream/mageia-cauldron/man9/skb_unlink.9
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+.\" -*- nroff -*-
+.\"
+.\" copyright (C) 1997 Cyrus Durgin <cider@speakeasy.org>
+.\"
+.\" Permission is granted to make and distribute verbatim copies of this
+.\" manual provided the copyright notice and this permission notice are
+.\" preserved on all copies.
+.\"
+.\" Permission is granted to copy and distribute modified versions of this
+.\" manual under the conditions for verbatim copying, provided that the
+.\" entire resulting derived work is distributed under the terms of a
+.\" permission notice identical to this one
+.\" 
+.\" Since the Linux kernel and libraries are constantly changing, this
+.\" manual page may be incorrect or out-of-date.  The author(s) assume no
+.\" responsibility for errors or omissions, or for damages resulting from
+.\" the use of the information contained herein.  The author(s) may not
+.\" have taken the same level of care in the production of this manual,
+.\" which is licensed free of charge, as they might when working
+.\" professionally.
+.\" 
+.\" Formatted or processed versions of this manual, if unaccompanied by
+.\" the source, must acknowledge the copyright and authors of this work.
+.\"
+.TH SKB_UNLINK 9 "November 24, 1997" "Linux DDI" "Networking Functions"
+.hlm 0
+.na
+.SH NAME
+__skb_unlink, skb_unlink \- remove an sk_buff from its list
+.SH SYNOPSIS
+.B #include <linux/skbuff.h>
+.HP
+.BI "void __skb_unlink(struct sk_buff " *skb ", struct sk_buff_head " *list ");"
+.TP
+.BI "void skb_unlink(struct sk_buff " *skb ");"
+.hlm 1
+.ad
+.SH DESCRIPTION
+The \fBskb_unlink\fP function is a wrapper for \fB__skb_unlink\fP.
+\fB__skb_unlink\fP removes \fIskb\fP from its sk_buff_head.
+It decrements the list qlen pointer, and cleanly detaches the sk_buff
+from its queue.  This function should always be used instead of
+performing this task manually, as it provides a clean, standardized
+way of manipulating an sk_buff_head, and provides interrupt disabling (see
+\fBNOTES\fP below.)  Most users will not call \fB__skb_unlink\fP
+directly, as it requires that two arguments be supplied and does not
+provide any interrupt handling.  \fBskb_unlink\fP determines the list
+from which \fIskb\fP should be detached, and disables interrupts.
+.SH "RETURN VALUE"
+None.
+.SH NOTES
+It is important to note the difference between not only \fB__skb_unlink\fP
+and \fBskb_unlink\fP, but all the \fB__skb_\fP functions and their
+\fBskb_\fP counterparts.  Essentially, the \fB__skb_\fP functions are
+non-atomic, and should only be used with interrupts disabled.  As a convenience,
+the \fBskb_\fP functions are provided, which perform interrupt disable /
+enable wrapper functionality in addition to performing their specific tasks.
+.SH AVAILABILITY
+Linux 1.0+
+.SH "SEE ALSO"
+.hlm 0
+.na
+.BR intro "(9), " skb_dequeue "(9), " skb_insert "(9), " skb_queue_head "(9), " skb_queue_tail "(9)"
+.ad
+.hlm 1
+.PP
+/usr/src/linux/net/core/skbuff.c /usr/src/linux/net/ipv4/af_inet.c /usr/src/linux/net/ipv4/ip_output.c /usr/src/linux/net/ipv4/tcp.c
+.SH AUTHOR
+Cyrus Durgin <cider@speakeasy.org>