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[PKT_SCHED]: Convert tc action functions to single skb pointers 

tcf_action_exec only gets a single skb pointer and doesn't own the skb,
but passes double skb pointers (to a local variable) to the action
functions. Change to use single skb pointers everywhere.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2006-01-08 22:15:34 -08:00 committed by David S. Miller
parent 538e43a4bd
commit f43c5a0df3
8 changed files with 11 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/net/act_api.h
View File

@ -63,7 +63,7 @@ struct tc_action_ops
__u32 type; /* TBD to match kind */ __u32 type; /* TBD to match kind */
__u32 capab; /* capabilities includes 4 bit version */ __u32 capab; /* capabilities includes 4 bit version */
struct module *owner; struct module *owner;
int (*act)(struct sk_buff **, struct tc_action *, struct tcf_result *); int (*act)(struct sk_buff *, struct tc_action *, struct tcf_result *);
int (*get_stats)(struct sk_buff *, struct tc_action *); int (*get_stats)(struct sk_buff *, struct tc_action *);
int (*dump)(struct sk_buff *, struct tc_action *,int , int); int (*dump)(struct sk_buff *, struct tc_action *,int , int);
int (*cleanup)(struct tc_action *, int bind); int (*cleanup)(struct tc_action *, int bind);

2
net/sched/act_api.c
View File

@ -165,7 +165,7 @@ int tcf_action_exec(struct sk_buff *skb, struct tc_action *act,
while ((a = act) != NULL) { while ((a = act) != NULL) {
repeat: repeat:
if (a->ops && a->ops->act) { if (a->ops && a->ops->act) {
ret = a->ops->act(&skb, a, res); ret = a->ops->act(skb, a, res);
if (TC_MUNGED & skb->tc_verd) { if (TC_MUNGED & skb->tc_verd) {
/* copied already, allow trampling */ /* copied already, allow trampling */
skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd); skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd);

3
net/sched/gact.c
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@ -135,10 +135,9 @@ tcf_gact_cleanup(struct tc_action *a, int bind)
} }
static int static int
tcf_gact(struct sk_buff **pskb, struct tc_action *a, struct tcf_result *res) tcf_gact(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res)
{ {
struct tcf_gact *p = PRIV(a, gact); struct tcf_gact *p = PRIV(a, gact);
struct sk_buff *skb = *pskb;
int action = TC_ACT_SHOT; int action = TC_ACT_SHOT;
spin_lock(&p->lock); spin_lock(&p->lock);

6
net/sched/ipt.c
View File

@ -201,11 +201,10 @@ tcf_ipt_cleanup(struct tc_action *a, int bind)
} }
static int static int
tcf_ipt(struct sk_buff **pskb, struct tc_action *a, struct tcf_result *res) tcf_ipt(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res)
{ {
int ret = 0, result = 0; int ret = 0, result = 0;
struct tcf_ipt *p = PRIV(a, ipt); struct tcf_ipt *p = PRIV(a, ipt);
struct sk_buff *skb = *pskb;
if (skb_cloned(skb)) { if (skb_cloned(skb)) {
if (pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) if (pskb_expand_head(skb, 0, 0, GFP_ATOMIC))
@ -222,6 +221,9 @@ tcf_ipt(struct sk_buff **pskb, struct tc_action *a, struct tcf_result *res)
worry later - danger - this API seems to have changed worry later - danger - this API seems to have changed
from earlier kernels */ from earlier kernels */
/* iptables targets take a double skb pointer in case the skb
* needs to be replaced. We don't own the skb, so this must not
* happen. The pskb_expand_head above should make sure of this */
ret = p->t->u.kernel.target->target(&skb, skb->dev, NULL, ret = p->t->u.kernel.target->target(&skb, skb->dev, NULL,
p->hook, p->t->data, NULL); p->hook, p->t->data, NULL);
switch (ret) { switch (ret) {

3
net/sched/mirred.c
View File

@ -158,12 +158,11 @@ tcf_mirred_cleanup(struct tc_action *a, int bind)
} }
static int static int
tcf_mirred(struct sk_buff **pskb, struct tc_action *a, struct tcf_result *res) tcf_mirred(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res)
{ {
struct tcf_mirred *p = PRIV(a, mirred); struct tcf_mirred *p = PRIV(a, mirred);
struct net_device *dev; struct net_device *dev;
struct sk_buff *skb2 = NULL; struct sk_buff *skb2 = NULL;
struct sk_buff *skb = *pskb;
u32 at = G_TC_AT(skb->tc_verd); u32 at = G_TC_AT(skb->tc_verd);
spin_lock(&p->lock); spin_lock(&p->lock);

3
net/sched/pedit.c
View File

@ -130,10 +130,9 @@ tcf_pedit_cleanup(struct tc_action *a, int bind)
} }
static int static int
tcf_pedit(struct sk_buff **pskb, struct tc_action *a, struct tcf_result *res) tcf_pedit(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res)
{ {
struct tcf_pedit *p = PRIV(a, pedit); struct tcf_pedit *p = PRIV(a, pedit);
struct sk_buff *skb = *pskb;
int i, munged = 0; int i, munged = 0;
u8 *pptr; u8 *pptr;

3
net/sched/police.c
View File

@ -284,11 +284,10 @@ static int tcf_act_police_cleanup(struct tc_action *a, int bind)
return 0; return 0;
} }
static int tcf_act_police(struct sk_buff **pskb, struct tc_action *a, static int tcf_act_police(struct sk_buff *skb, struct tc_action *a,
struct tcf_result *res) struct tcf_result *res)
{ {
psched_time_t now; psched_time_t now;
struct sk_buff *skb = *pskb;
struct tcf_police *p = PRIV(a); struct tcf_police *p = PRIV(a);
long toks; long toks;
long ptoks = 0; long ptoks = 0;

3
net/sched/simple.c
View File

@ -44,9 +44,8 @@ static DEFINE_RWLOCK(simp_lock);
#include <net/pkt_act.h> #include <net/pkt_act.h>
#include <net/act_generic.h> #include <net/act_generic.h>
static int tcf_simp(struct sk_buff **pskb, struct tc_action *a, struct tcf_result *res) static int tcf_simp(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res)
{ {
struct sk_buff *skb = *pskb;
struct tcf_defact *p = PRIV(a, defact); struct tcf_defact *p = PRIV(a, defact);
spin_lock(&p->lock); spin_lock(&p->lock);