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-rw-r--r--net/dccp/qpolicy.c137
1 files changed, 0 insertions, 137 deletions
diff --git a/net/dccp/qpolicy.c b/net/dccp/qpolicy.c
deleted file mode 100644
index 27383f88c75..00000000000
--- a/net/dccp/qpolicy.c
+++ /dev/null
@@ -1,137 +0,0 @@
-/*
- * net/dccp/qpolicy.c
- *
- * Policy-based packet dequeueing interface for DCCP.
- *
- * Copyright (c) 2008 Tomasz Grobelny <tomasz@grobelny.oswiecenia.net>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License v2
- * as published by the Free Software Foundation.
- */
-#include "dccp.h"
-
-/*
- * Simple Dequeueing Policy:
- * If tx_qlen is different from 0, enqueue up to tx_qlen elements.
- */
-static void qpolicy_simple_push(struct sock *sk, struct sk_buff *skb)
-{
- skb_queue_tail(&sk->sk_write_queue, skb);
-}
-
-static bool qpolicy_simple_full(struct sock *sk)
-{
- return dccp_sk(sk)->dccps_tx_qlen &&
- sk->sk_write_queue.qlen >= dccp_sk(sk)->dccps_tx_qlen;
-}
-
-static struct sk_buff *qpolicy_simple_top(struct sock *sk)
-{
- return skb_peek(&sk->sk_write_queue);
-}
-
-/*
- * Priority-based Dequeueing Policy:
- * If tx_qlen is different from 0 and the queue has reached its upper bound
- * of tx_qlen elements, replace older packets lowest-priority-first.
- */
-static struct sk_buff *qpolicy_prio_best_skb(struct sock *sk)
-{
- struct sk_buff *skb, *best = NULL;
-
- skb_queue_walk(&sk->sk_write_queue, skb)
- if (best == NULL || skb->priority > best->priority)
- best = skb;
- return best;
-}
-
-static struct sk_buff *qpolicy_prio_worst_skb(struct sock *sk)
-{
- struct sk_buff *skb, *worst = NULL;
-
- skb_queue_walk(&sk->sk_write_queue, skb)
- if (worst == NULL || skb->priority < worst->priority)
- worst = skb;
- return worst;
-}
-
-static bool qpolicy_prio_full(struct sock *sk)
-{
- if (qpolicy_simple_full(sk))
- dccp_qpolicy_drop(sk, qpolicy_prio_worst_skb(sk));
- return false;
-}
-
-/**
- * struct dccp_qpolicy_operations - TX Packet Dequeueing Interface
- * @push: add a new @skb to the write queue
- * @full: indicates that no more packets will be admitted
- * @top: peeks at whatever the queueing policy defines as its `top'
- */
-static struct dccp_qpolicy_operations {
- void (*push) (struct sock *sk, struct sk_buff *skb);
- bool (*full) (struct sock *sk);
- struct sk_buff* (*top) (struct sock *sk);
- __be32 params;
-
-} qpol_table[DCCPQ_POLICY_MAX] = {
- [DCCPQ_POLICY_SIMPLE] = {
- .push = qpolicy_simple_push,
- .full = qpolicy_simple_full,
- .top = qpolicy_simple_top,
- .params = 0,
- },
- [DCCPQ_POLICY_PRIO] = {
- .push = qpolicy_simple_push,
- .full = qpolicy_prio_full,
- .top = qpolicy_prio_best_skb,
- .params = DCCP_SCM_PRIORITY,
- },
-};
-
-/*
- * Externally visible interface
- */
-void dccp_qpolicy_push(struct sock *sk, struct sk_buff *skb)
-{
- qpol_table[dccp_sk(sk)->dccps_qpolicy].push(sk, skb);
-}
-
-bool dccp_qpolicy_full(struct sock *sk)
-{
- return qpol_table[dccp_sk(sk)->dccps_qpolicy].full(sk);
-}
-
-void dccp_qpolicy_drop(struct sock *sk, struct sk_buff *skb)
-{
- if (skb != NULL) {
- skb_unlink(skb, &sk->sk_write_queue);
- kfree_skb(skb);
- }
-}
-
-struct sk_buff *dccp_qpolicy_top(struct sock *sk)
-{
- return qpol_table[dccp_sk(sk)->dccps_qpolicy].top(sk);
-}
-
-struct sk_buff *dccp_qpolicy_pop(struct sock *sk)
-{
- struct sk_buff *skb = dccp_qpolicy_top(sk);
-
- /* Clear any skb fields that we used internally */
- skb->priority = 0;
-
- if (skb)
- skb_unlink(skb, &sk->sk_write_queue);
- return skb;
-}
-
-bool dccp_qpolicy_param_ok(struct sock *sk, __be32 param)
-{
- /* check if exactly one bit is set */
- if (!param || (param & (param - 1)))
- return false;
- return (qpol_table[dccp_sk(sk)->dccps_qpolicy].params & param) == param;
-}