From f43c5a0df38e12f53a3023175a12da9b7ef0df63 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Sun, 8 Jan 2006 22:15:34 -0800 Subject: [PATCH] [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 Signed-off-by: David S. Miller --- include/net/act_api.h | 2 +- net/sched/act_api.c | 2 +- net/sched/gact.c | 3 +-- net/sched/ipt.c | 6 ++++-- net/sched/mirred.c | 3 +-- net/sched/pedit.c | 3 +-- net/sched/police.c | 3 +-- net/sched/simple.c | 3 +-- 8 files changed, 11 insertions(+), 14 deletions(-) diff --git a/include/net/act_api.h b/include/net/act_api.h index b55eb7c7f0..11e9eaf79f 100644 --- a/include/net/act_api.h +++ b/include/net/act_api.h @@ -63,7 +63,7 @@ struct tc_action_ops __u32 type; /* TBD to match kind */ __u32 capab; /* capabilities includes 4 bit version */ 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 (*dump)(struct sk_buff *, struct tc_action *,int , int); int (*cleanup)(struct tc_action *, int bind); diff --git a/net/sched/act_api.c b/net/sched/act_api.c index 2ce1cb2aa2..bd651a4088 100644 --- a/net/sched/act_api.c +++ b/net/sched/act_api.c @@ -165,7 +165,7 @@ int tcf_action_exec(struct sk_buff *skb, struct tc_action *act, while ((a = act) != NULL) { repeat: 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) { /* copied already, allow trampling */ skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd); diff --git a/net/sched/gact.c b/net/sched/gact.c index d1c6d54291..a1e68f78dc 100644 --- a/net/sched/gact.c +++ b/net/sched/gact.c @@ -135,10 +135,9 @@ tcf_gact_cleanup(struct tc_action *a, int bind) } 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 sk_buff *skb = *pskb; int action = TC_ACT_SHOT; spin_lock(&p->lock); diff --git a/net/sched/ipt.c b/net/sched/ipt.c index f50136eed2..b5001939b7 100644 --- a/net/sched/ipt.c +++ b/net/sched/ipt.c @@ -201,11 +201,10 @@ tcf_ipt_cleanup(struct tc_action *a, int bind) } 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; struct tcf_ipt *p = PRIV(a, ipt); - struct sk_buff *skb = *pskb; if (skb_cloned(skb)) { 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 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, p->hook, p->t->data, NULL); switch (ret) { diff --git a/net/sched/mirred.c b/net/sched/mirred.c index 20d06916dc..4fcccbd508 100644 --- a/net/sched/mirred.c +++ b/net/sched/mirred.c @@ -158,12 +158,11 @@ tcf_mirred_cleanup(struct tc_action *a, int bind) } 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 net_device *dev; struct sk_buff *skb2 = NULL; - struct sk_buff *skb = *pskb; u32 at = G_TC_AT(skb->tc_verd); spin_lock(&p->lock); diff --git a/net/sched/pedit.c b/net/sched/pedit.c index 767d24f461..b5167afec2 100644 --- a/net/sched/pedit.c +++ b/net/sched/pedit.c @@ -130,10 +130,9 @@ tcf_pedit_cleanup(struct tc_action *a, int bind) } 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 sk_buff *skb = *pskb; int i, munged = 0; u8 *pptr; diff --git a/net/sched/police.c b/net/sched/police.c index eb39fb2f39..a8345163cc 100644 --- a/net/sched/police.c +++ b/net/sched/police.c @@ -284,11 +284,10 @@ static int tcf_act_police_cleanup(struct tc_action *a, int bind) 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) { psched_time_t now; - struct sk_buff *skb = *pskb; struct tcf_police *p = PRIV(a); long toks; long ptoks = 0; diff --git a/net/sched/simple.c b/net/sched/simple.c index 8a6ae4f491..e5f2e1f431 100644 --- a/net/sched/simple.c +++ b/net/sched/simple.c @@ -44,9 +44,8 @@ static DEFINE_RWLOCK(simp_lock); #include #include -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); spin_lock(&p->lock); -- 2.39.5