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Code Issues Releases Activity

Style cleanup.

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Approved by:	glebius (mentor)
This commit is contained in:
Alexander Motin 2007-05-16 12:11:09 +00:00
parent cd27e26ca7
commit ae1be01f9e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=169602
1 changed files with 88 additions and 99 deletions
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165
sys/netgraph/ng_car.c
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@ -38,13 +38,10 @@
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/ctype.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <netgraph/ng_message.h>
#include <netgraph/ng_parse.h>
@ -60,13 +57,13 @@ struct hookinfo {
hook_p dest; /* destination hook */
int64_t tc; /* commited token bucket counter */
int64_t te; /* exceeded / peak token bucket counter */
int64_t te; /* exceeded/peak token bucket counter */
struct timeval lastRefill; /* last token refill time */
struct ng_car_hookconf conf; /* hook configuration */
struct ng_car_hookstats stats; /* hook stats */
struct mbuf* q[NG_CAR_QUEUE_SIZE]; /* circular packet queue */
struct mbuf *q[NG_CAR_QUEUE_SIZE]; /* circular packet queue */
int q_first; /* first queue element */
int q_last; /* last queue element */
struct callout q_callout; /* periodic queue processing routine */
@ -188,9 +185,8 @@ ng_car_constructor(node_p node)
{
priv_p priv;
/* Initialize private descriptor */
MALLOC(priv, priv_p, sizeof(*priv), M_NETGRAPH,
M_NOWAIT | M_ZERO);
/* Initialize private descriptor. */
priv = malloc(sizeof(*priv), M_NETGRAPH, M_NOWAIT | M_ZERO);
if (priv == NULL)
return (ENOMEM);
@ -235,7 +231,7 @@ ng_car_constructor(node_p node)
}
/*
* Add a hook
* Add a hook.
*/
static int
ng_car_newhook(node_p node, hook_p hook, const char *name)
@ -258,7 +254,7 @@ ng_car_newhook(node_p node, hook_p hook, const char *name)
}
/*
* Data has arrived
* Data has arrived.
*/
static int
ng_car_rcvdata(hook_p hook, item_p item )
@ -287,7 +283,7 @@ ng_car_rcvdata(hook_p hook, item_p item )
do { \
switch (a) { \
case NG_CAR_ACTION_FORWARD: \
/* Do nothing */ \
/* Do nothing. */ \
break; \
case NG_CAR_ACTION_MARK: \
/* XXX find a way to mark packets (mbuf tag?) */ \
@ -295,78 +291,76 @@ ng_car_rcvdata(hook_p hook, item_p item )
break; \
case NG_CAR_ACTION_DROP: \
default: \
/* Drop packet and return */ \
/* Drop packet and return. */ \
NG_FREE_ITEM(item); \
++hinfo->stats.droped_pkts; \
return 0; \
return (0); \
} \
} \
while (0)
} while (0)
/* Check commited token bucket. */
if (hinfo->tc - m->m_pkthdr.len >= 0) {
/* This packet is green */
/* This packet is green. */
++hinfo->stats.green_pkts;
hinfo->tc -= m->m_pkthdr.len;
NG_CAR_PERFORM_MATCH_ACTION(hinfo->conf.green_action);
} else {
} else {
/* Refill only if not green without it. */
ng_car_refillhook(hinfo);
/* Refill only if not green without it. */
ng_car_refillhook(hinfo);
/* Check commited token bucket again after refill. */
if (hinfo->tc - m->m_pkthdr.len >= 0) {
/* This packet is green */
++hinfo->stats.green_pkts;
hinfo->tc -= m->m_pkthdr.len;
NG_CAR_PERFORM_MATCH_ACTION(hinfo->conf.green_action);
/* Check commited token bucket again after refill. */
if (hinfo->tc - m->m_pkthdr.len >= 0) {
/* This packet is green */
++hinfo->stats.green_pkts;
hinfo->tc -= m->m_pkthdr.len;
NG_CAR_PERFORM_MATCH_ACTION(hinfo->conf.green_action);
/* If not green and mode is SHAPE, enqueue packet. */
} else if (hinfo->conf.mode == NG_CAR_SHAPE) {
ng_car_enqueue(hinfo, item);
return (0);
/* If not green and mode is SHAPE, enqueue packet. */
} else if (hinfo->conf.mode == NG_CAR_SHAPE) {
ng_car_enqueue(hinfo, item);
return (0);
/* If not green and mode is RED, calculate probability. */
} else if (hinfo->conf.mode == NG_CAR_RED) {
/* Is packet is bigger then extended burst? */
if (m->m_pkthdr.len - (hinfo->tc - m->m_pkthdr.len)
> hinfo->conf.ebs) {
/* This packet is definitely red */
++hinfo->stats.red_pkts;
hinfo->te = 0;
NG_CAR_PERFORM_MATCH_ACTION(hinfo->conf.red_action);
/* Use token bucket to simulate RED-like drop probability. */
} else if (hinfo->te + (m->m_pkthdr.len - hinfo->tc)
< hinfo->conf.ebs) {
/* This packet is yellow */
++hinfo->stats.yellow_pkts;
hinfo->te += m->m_pkthdr.len - hinfo->tc;
hinfo->tc -= m->m_pkthdr.len; /* go to negative tokens */
NG_CAR_PERFORM_MATCH_ACTION(hinfo->conf.yellow_action);
/* If not green and mode is RED, calculate probability. */
} else if (hinfo->conf.mode == NG_CAR_RED) {
/* Is packet is bigger then extended burst? */
if (m->m_pkthdr.len - (hinfo->tc - m->m_pkthdr.len) >
hinfo->conf.ebs) {
/* This packet is definitely red. */
++hinfo->stats.red_pkts;
hinfo->te = 0;
NG_CAR_PERFORM_MATCH_ACTION(hinfo->conf.red_action);
/* Use token bucket to simulate RED-like drop
probability. */
} else if (hinfo->te + (m->m_pkthdr.len - hinfo->tc) <
hinfo->conf.ebs) {
/* This packet is yellow */
++hinfo->stats.yellow_pkts;
hinfo->te += m->m_pkthdr.len - hinfo->tc;
/* Go to negative tokens. */
hinfo->tc -= m->m_pkthdr.len;
NG_CAR_PERFORM_MATCH_ACTION(hinfo->conf.yellow_action);
} else {
/* This packet is probaly red. */
++hinfo->stats.red_pkts;
hinfo->te = 0;
NG_CAR_PERFORM_MATCH_ACTION(hinfo->conf.red_action);
}
/* If not green and mode is SINGLE/DOUBLE RATE. */
} else {
/* This packet is probaly red */
++hinfo->stats.red_pkts;
hinfo->te = 0;
NG_CAR_PERFORM_MATCH_ACTION(hinfo->conf.red_action);
/* Check extended token bucket. */
if (hinfo->te - m->m_pkthdr.len >= 0) {
/* This packet is yellow */
++hinfo->stats.yellow_pkts;
hinfo->te -= m->m_pkthdr.len;
NG_CAR_PERFORM_MATCH_ACTION(hinfo->conf.yellow_action);
} else {
/* This packet is red */
++hinfo->stats.red_pkts;
NG_CAR_PERFORM_MATCH_ACTION(hinfo->conf.red_action);
}
}
/* If not green and mode is SINGLE/DOUBLE RATE. */
} else {
/* Check extended token bucket. */
if (hinfo->te - m->m_pkthdr.len >= 0) {
/* This packet is yellow */
++hinfo->stats.yellow_pkts;
hinfo->te -= m->m_pkthdr.len;
NG_CAR_PERFORM_MATCH_ACTION(hinfo->conf.yellow_action);
} else {
/* This packet is red */
++hinfo->stats.red_pkts;
NG_CAR_PERFORM_MATCH_ACTION(hinfo->conf.red_action);
}
}
}
#undef NG_CAR_PERFORM_MATCH_ACTION
@ -376,11 +370,11 @@ ng_car_rcvdata(hook_p hook, item_p item )
++hinfo->stats.errors;
++hinfo->stats.passed_pkts;
return error;
return (error);
}
/*
* Receive a control message
* Receive a control message.
*/
static int
ng_car_rcvmsg(node_p node, item_p item, hook_p lasthook)
@ -505,9 +499,8 @@ ng_car_shutdown(node_p node)
mtx_destroy(&priv->upper.q_mtx);
mtx_destroy(&priv->lower.q_mtx);
NG_NODE_SET_PRIVATE(node, NULL);
NG_NODE_UNREF(priv->node);
FREE(priv, M_NETGRAPH);
free(priv, M_NETGRAPH);
return (0);
}
@ -608,8 +601,6 @@ ng_car_refillhook(struct hookinfo *h)
/* Remember this moment. */
h->lastRefill = newt;
return;
}
/*
@ -646,9 +637,8 @@ ng_car_q_event(node_p node, hook_p hook, void *arg, int arg2)
/* Send packet. */
m = hinfo->q[hinfo->q_first];
if ((item = ng_package_data(m, NG_NOFLAGS)) != NULL) {
if ((item = ng_package_data(m, NG_NOFLAGS)) != NULL)
NG_FWD_ITEM_HOOK(error, item, hinfo->dest);
}
/* Get next one. */
hinfo->q_first++;
@ -666,10 +656,9 @@ ng_car_q_event(node_p node, hook_p hook, void *arg, int arg2)
}
/* If something left */
if (hinfo->q_first != hinfo->q_last) {
/* schedule queue processing. */
if (hinfo->q_first != hinfo->q_last)
/* Schedule queue processing. */
ng_car_schedule(hinfo);
}
}
/*
@ -684,18 +673,18 @@ ng_car_enqueue(struct hookinfo *hinfo, item_p item)
NGI_GET_M(item, m);
NG_FREE_ITEM(item);
/* Lock queue mutex */
/* Lock queue mutex. */
mtx_lock(&hinfo->q_mtx);
/* Calculate used queue length */
/* Calculate used queue length. */
len = hinfo->q_last - hinfo->q_first;
if (len < 0)
len += NG_CAR_QUEUE_SIZE;
/* If queue is overflowed or we have no RED tokens */
/* If queue is overflowed or we have no RED tokens. */
if ((len >= (NG_CAR_QUEUE_SIZE - 1)) ||
(hinfo->te + len >= NG_CAR_QUEUE_SIZE)) {
/* drop packet. */
/* Drop packet. */
++hinfo->stats.red_pkts;
NG_FREE_M(m);
@ -714,15 +703,15 @@ ng_car_enqueue(struct hookinfo *hinfo, item_p item)
if (len > NG_CAR_QUEUE_MIN_TH)
hinfo->te += len - NG_CAR_QUEUE_MIN_TH;
/* If this is a first packet it the queue */
/* If this is a first packet in the queue. */
if (len == 0) {
hinfo->tc -= m->m_pkthdr.len;
/* schedule queue processing. */
/* Schedule queue processing. */
ng_car_schedule(hinfo);
}
}
/* Unlock queue mutex */
/* Unlock queue mutex. */
mtx_unlock(&hinfo->q_mtx);
}