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net_sched: properly handle failure case of tcf_exts_init() 

After commit 22dc13c837 ("net_sched: convert tcf_exts from list to pointer array")
we do dynamic allocation in tcf_exts_init(), therefore we need
to handle the ENOMEM case properly.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
WANG Cong 2016-08-19 12:36:54 -07:00 committed by David S. Miller
parent c1346a7e70
commit b9a24bb76b
11 changed files with 182 additions and 75 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
include/net/pkt_cls.h
View File

@ -69,17 +69,19 @@ struct tcf_exts {
int police; int police;
}; };
static inline void tcf_exts_init(struct tcf_exts *exts, int action, int police) static inline int tcf_exts_init(struct tcf_exts *exts, int action, int police)
{ {
#ifdef CONFIG_NET_CLS_ACT #ifdef CONFIG_NET_CLS_ACT
exts->type = 0; exts->type = 0;
exts->nr_actions = 0; exts->nr_actions = 0;
exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *),
GFP_KERNEL); GFP_KERNEL);
WARN_ON(!exts->actions); /* TODO: propagate the error to callers */ if (!exts->actions)
return -ENOMEM;
#endif #endif
exts->action = action; exts->action = action;
exts->police = police; exts->police = police;
return 0;
} }
/** /**

12
net/sched/cls_basic.c
View File

@ -138,10 +138,12 @@ static int basic_set_parms(struct net *net, struct tcf_proto *tp,
struct tcf_exts e; struct tcf_exts e;
struct tcf_ematch_tree t; struct tcf_ematch_tree t;
tcf_exts_init(&e, TCA_BASIC_ACT, TCA_BASIC_POLICE); err = tcf_exts_init(&e, TCA_BASIC_ACT, TCA_BASIC_POLICE);
err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
if (err < 0) if (err < 0)
return err; return err;
err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
if (err < 0)
goto errout;
err = tcf_em_tree_validate(tp, tb[TCA_BASIC_EMATCHES], &t); err = tcf_em_tree_validate(tp, tb[TCA_BASIC_EMATCHES], &t);
if (err < 0) if (err < 0)
@ -189,7 +191,10 @@ static int basic_change(struct net *net, struct sk_buff *in_skb,
if (!fnew) if (!fnew)
return -ENOBUFS; return -ENOBUFS;
tcf_exts_init(&fnew->exts, TCA_BASIC_ACT, TCA_BASIC_POLICE); err = tcf_exts_init(&fnew->exts, TCA_BASIC_ACT, TCA_BASIC_POLICE);
if (err < 0)
goto errout;
err = -EINVAL; err = -EINVAL;
if (handle) { if (handle) {
fnew->handle = handle; fnew->handle = handle;
@ -226,6 +231,7 @@ static int basic_change(struct net *net, struct sk_buff *in_skb,
return 0; return 0;
errout: errout:
tcf_exts_destroy(&fnew->exts);
kfree(fnew); kfree(fnew);
return err; return err;
} }

29
net/sched/cls_bpf.c
View File

@ -311,17 +311,19 @@ static int cls_bpf_modify_existing(struct net *net, struct tcf_proto *tp,
if ((!is_bpf && !is_ebpf) || (is_bpf && is_ebpf)) if ((!is_bpf && !is_ebpf) || (is_bpf && is_ebpf))
return -EINVAL; return -EINVAL;
tcf_exts_init(&exts, TCA_BPF_ACT, TCA_BPF_POLICE); ret = tcf_exts_init(&exts, TCA_BPF_ACT, TCA_BPF_POLICE);
ret = tcf_exts_validate(net, tp, tb, est, &exts, ovr);
if (ret < 0) if (ret < 0)
return ret; return ret;
ret = tcf_exts_validate(net, tp, tb, est, &exts, ovr);
if (ret < 0)
goto errout;
if (tb[TCA_BPF_FLAGS]) { if (tb[TCA_BPF_FLAGS]) {
u32 bpf_flags = nla_get_u32(tb[TCA_BPF_FLAGS]); u32 bpf_flags = nla_get_u32(tb[TCA_BPF_FLAGS]);
if (bpf_flags & ~TCA_BPF_FLAG_ACT_DIRECT) { if (bpf_flags & ~TCA_BPF_FLAG_ACT_DIRECT) {
tcf_exts_destroy(&exts); ret = -EINVAL;
return -EINVAL; goto errout;
} }
have_exts = bpf_flags & TCA_BPF_FLAG_ACT_DIRECT; have_exts = bpf_flags & TCA_BPF_FLAG_ACT_DIRECT;
@ -331,10 +333,8 @@ static int cls_bpf_modify_existing(struct net *net, struct tcf_proto *tp,
ret = is_bpf ? cls_bpf_prog_from_ops(tb, prog) : ret = is_bpf ? cls_bpf_prog_from_ops(tb, prog) :
cls_bpf_prog_from_efd(tb, prog, tp); cls_bpf_prog_from_efd(tb, prog, tp);
if (ret < 0) { if (ret < 0)
tcf_exts_destroy(&exts); goto errout;
return ret;
}
if (tb[TCA_BPF_CLASSID]) { if (tb[TCA_BPF_CLASSID]) {
prog->res.classid = nla_get_u32(tb[TCA_BPF_CLASSID]); prog->res.classid = nla_get_u32(tb[TCA_BPF_CLASSID]);
@ -343,6 +343,10 @@ static int cls_bpf_modify_existing(struct net *net, struct tcf_proto *tp,
tcf_exts_change(tp, &prog->exts, &exts); tcf_exts_change(tp, &prog->exts, &exts);
return 0; return 0;
errout:
tcf_exts_destroy(&exts);
return ret;
} }
static u32 cls_bpf_grab_new_handle(struct tcf_proto *tp, static u32 cls_bpf_grab_new_handle(struct tcf_proto *tp,
@ -388,7 +392,9 @@ static int cls_bpf_change(struct net *net, struct sk_buff *in_skb,
if (!prog) if (!prog)
return -ENOBUFS; return -ENOBUFS;
tcf_exts_init(&prog->exts, TCA_BPF_ACT, TCA_BPF_POLICE); ret = tcf_exts_init(&prog->exts, TCA_BPF_ACT, TCA_BPF_POLICE);
if (ret < 0)
goto errout;
if (oldprog) { if (oldprog) {
if (handle && oldprog->handle != handle) { if (handle && oldprog->handle != handle) {
@ -420,9 +426,10 @@ static int cls_bpf_change(struct net *net, struct sk_buff *in_skb,
*arg = (unsigned long) prog; *arg = (unsigned long) prog;
return 0; return 0;
errout:
kfree(prog);
errout:
tcf_exts_destroy(&prog->exts);
kfree(prog);
return ret; return ret;
} }

13
net/sched/cls_cgroup.c
View File

@ -93,7 +93,9 @@ static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
if (!new) if (!new)
return -ENOBUFS; return -ENOBUFS;
tcf_exts_init(&new->exts, TCA_CGROUP_ACT, TCA_CGROUP_POLICE); err = tcf_exts_init(&new->exts, TCA_CGROUP_ACT, TCA_CGROUP_POLICE);
if (err < 0)
goto errout;
new->handle = handle; new->handle = handle;
new->tp = tp; new->tp = tp;
err = nla_parse_nested(tb, TCA_CGROUP_MAX, tca[TCA_OPTIONS], err = nla_parse_nested(tb, TCA_CGROUP_MAX, tca[TCA_OPTIONS],
@ -101,10 +103,14 @@ static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
if (err < 0) if (err < 0)
goto errout; goto errout;
tcf_exts_init(&e, TCA_CGROUP_ACT, TCA_CGROUP_POLICE); err = tcf_exts_init(&e, TCA_CGROUP_ACT, TCA_CGROUP_POLICE);
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, ovr);
if (err < 0) if (err < 0)
goto errout; goto errout;
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, ovr);
if (err < 0) {
tcf_exts_destroy(&e);
goto errout;
}
err = tcf_em_tree_validate(tp, tb[TCA_CGROUP_EMATCHES], &t); err = tcf_em_tree_validate(tp, tb[TCA_CGROUP_EMATCHES], &t);
if (err < 0) { if (err < 0) {
@ -120,6 +126,7 @@ static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
call_rcu(&head->rcu, cls_cgroup_destroy_rcu); call_rcu(&head->rcu, cls_cgroup_destroy_rcu);
return 0; return 0;
errout: errout:
tcf_exts_destroy(&new->exts);
kfree(new); kfree(new);
return err; return err;
} }

26
net/sched/cls_flow.c
View File

@ -418,10 +418,12 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
return -EOPNOTSUPP; return -EOPNOTSUPP;
} }
tcf_exts_init(&e, TCA_FLOW_ACT, TCA_FLOW_POLICE); err = tcf_exts_init(&e, TCA_FLOW_ACT, TCA_FLOW_POLICE);
if (err < 0)
goto err1;
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, ovr); err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, ovr);
if (err < 0) if (err < 0)
return err; goto err1;
err = tcf_em_tree_validate(tp, tb[TCA_FLOW_EMATCHES], &t); err = tcf_em_tree_validate(tp, tb[TCA_FLOW_EMATCHES], &t);
if (err < 0) if (err < 0)
@ -432,13 +434,15 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
if (!fnew) if (!fnew)
goto err2; goto err2;
tcf_exts_init(&fnew->exts, TCA_FLOW_ACT, TCA_FLOW_POLICE); err = tcf_exts_init(&fnew->exts, TCA_FLOW_ACT, TCA_FLOW_POLICE);
if (err < 0)
goto err3;
fold = (struct flow_filter *)*arg; fold = (struct flow_filter *)*arg;
if (fold) { if (fold) {
err = -EINVAL; err = -EINVAL;
if (fold->handle != handle && handle) if (fold->handle != handle && handle)
goto err2; goto err3;
/* Copy fold into fnew */ /* Copy fold into fnew */
fnew->tp = fold->tp; fnew->tp = fold->tp;
@ -458,31 +462,31 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
if (tb[TCA_FLOW_MODE]) if (tb[TCA_FLOW_MODE])
mode = nla_get_u32(tb[TCA_FLOW_MODE]); mode = nla_get_u32(tb[TCA_FLOW_MODE]);
if (mode != FLOW_MODE_HASH && nkeys > 1) if (mode != FLOW_MODE_HASH && nkeys > 1)
goto err2; goto err3;
if (mode == FLOW_MODE_HASH) if (mode == FLOW_MODE_HASH)
perturb_period = fold->perturb_period; perturb_period = fold->perturb_period;
if (tb[TCA_FLOW_PERTURB]) { if (tb[TCA_FLOW_PERTURB]) {
if (mode != FLOW_MODE_HASH) if (mode != FLOW_MODE_HASH)
goto err2; goto err3;
perturb_period = nla_get_u32(tb[TCA_FLOW_PERTURB]) * HZ; perturb_period = nla_get_u32(tb[TCA_FLOW_PERTURB]) * HZ;
} }
} else { } else {
err = -EINVAL; err = -EINVAL;
if (!handle) if (!handle)
goto err2; goto err3;
if (!tb[TCA_FLOW_KEYS]) if (!tb[TCA_FLOW_KEYS])
goto err2; goto err3;
mode = FLOW_MODE_MAP; mode = FLOW_MODE_MAP;
if (tb[TCA_FLOW_MODE]) if (tb[TCA_FLOW_MODE])
mode = nla_get_u32(tb[TCA_FLOW_MODE]); mode = nla_get_u32(tb[TCA_FLOW_MODE]);
if (mode != FLOW_MODE_HASH && nkeys > 1) if (mode != FLOW_MODE_HASH && nkeys > 1)
goto err2; goto err3;
if (tb[TCA_FLOW_PERTURB]) { if (tb[TCA_FLOW_PERTURB]) {
if (mode != FLOW_MODE_HASH) if (mode != FLOW_MODE_HASH)
goto err2; goto err3;
perturb_period = nla_get_u32(tb[TCA_FLOW_PERTURB]) * HZ; perturb_period = nla_get_u32(tb[TCA_FLOW_PERTURB]) * HZ;
} }
@ -542,6 +546,8 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
call_rcu(&fold->rcu, flow_destroy_filter); call_rcu(&fold->rcu, flow_destroy_filter);
return 0; return 0;
err3:
tcf_exts_destroy(&fnew->exts);
err2: err2:
tcf_em_tree_destroy(&t); tcf_em_tree_destroy(&t);
kfree(fnew); kfree(fnew);

11
net/sched/cls_flower.c
View File

@ -513,10 +513,12 @@ static int fl_set_parms(struct net *net, struct tcf_proto *tp,
struct tcf_exts e; struct tcf_exts e;
int err; int err;
tcf_exts_init(&e, TCA_FLOWER_ACT, 0); err = tcf_exts_init(&e, TCA_FLOWER_ACT, 0);
err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
if (err < 0) if (err < 0)
return err; return err;
err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
if (err < 0)
goto errout;
if (tb[TCA_FLOWER_CLASSID]) { if (tb[TCA_FLOWER_CLASSID]) {
f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]); f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
@ -585,7 +587,9 @@ static int fl_change(struct net *net, struct sk_buff *in_skb,
if (!fnew) if (!fnew)
return -ENOBUFS; return -ENOBUFS;
tcf_exts_init(&fnew->exts, TCA_FLOWER_ACT, 0); err = tcf_exts_init(&fnew->exts, TCA_FLOWER_ACT, 0);
if (err < 0)
goto errout;
if (!handle) { if (!handle) {
handle = fl_grab_new_handle(tp, head); handle = fl_grab_new_handle(tp, head);
@ -649,6 +653,7 @@ static int fl_change(struct net *net, struct sk_buff *in_skb,
return 0; return 0;
errout: errout:
tcf_exts_destroy(&fnew->exts);
kfree(fnew); kfree(fnew);
return err; return err;
} }

18
net/sched/cls_fw.c
View File

@ -195,10 +195,12 @@ fw_change_attrs(struct net *net, struct tcf_proto *tp, struct fw_filter *f,
u32 mask; u32 mask;
int err; int err;
tcf_exts_init(&e, TCA_FW_ACT, TCA_FW_POLICE); err = tcf_exts_init(&e, TCA_FW_ACT, TCA_FW_POLICE);
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, ovr);
if (err < 0) if (err < 0)
return err; return err;
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, ovr);
if (err < 0)
goto errout;
if (tb[TCA_FW_CLASSID]) { if (tb[TCA_FW_CLASSID]) {
f->res.classid = nla_get_u32(tb[TCA_FW_CLASSID]); f->res.classid = nla_get_u32(tb[TCA_FW_CLASSID]);
@ -270,10 +272,15 @@ static int fw_change(struct net *net, struct sk_buff *in_skb,
#endif /* CONFIG_NET_CLS_IND */ #endif /* CONFIG_NET_CLS_IND */
fnew->tp = f->tp; fnew->tp = f->tp;
tcf_exts_init(&fnew->exts, TCA_FW_ACT, TCA_FW_POLICE); err = tcf_exts_init(&fnew->exts, TCA_FW_ACT, TCA_FW_POLICE);
if (err < 0) {
kfree(fnew);
return err;
}
err = fw_change_attrs(net, tp, fnew, tb, tca, base, ovr); err = fw_change_attrs(net, tp, fnew, tb, tca, base, ovr);
if (err < 0) { if (err < 0) {
tcf_exts_destroy(&fnew->exts);
kfree(fnew); kfree(fnew);
return err; return err;
} }
@ -313,7 +320,9 @@ static int fw_change(struct net *net, struct sk_buff *in_skb,
if (f == NULL) if (f == NULL)
return -ENOBUFS; return -ENOBUFS;
tcf_exts_init(&f->exts, TCA_FW_ACT, TCA_FW_POLICE); err = tcf_exts_init(&f->exts, TCA_FW_ACT, TCA_FW_POLICE);
if (err < 0)
goto errout;
f->id = handle; f->id = handle;
f->tp = tp; f->tp = tp;
@ -328,6 +337,7 @@ static int fw_change(struct net *net, struct sk_buff *in_skb,
return 0; return 0;
errout: errout:
tcf_exts_destroy(&f->exts);
kfree(f); kfree(f);
return err; return err;
} }

14
net/sched/cls_route.c
View File

@ -383,17 +383,19 @@ static int route4_set_parms(struct net *net, struct tcf_proto *tp,
struct nlattr **tb, struct nlattr *est, int new, struct nlattr **tb, struct nlattr *est, int new,
bool ovr) bool ovr)
{ {
int err;
u32 id = 0, to = 0, nhandle = 0x8000; u32 id = 0, to = 0, nhandle = 0x8000;
struct route4_filter *fp; struct route4_filter *fp;
unsigned int h1; unsigned int h1;
struct route4_bucket *b; struct route4_bucket *b;
struct tcf_exts e; struct tcf_exts e;
int err;
tcf_exts_init(&e, TCA_ROUTE4_ACT, TCA_ROUTE4_POLICE); err = tcf_exts_init(&e, TCA_ROUTE4_ACT, TCA_ROUTE4_POLICE);
err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
if (err < 0) if (err < 0)
return err; return err;
err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
if (err < 0)
goto errout;
err = -EINVAL; err = -EINVAL;
if (tb[TCA_ROUTE4_TO]) { if (tb[TCA_ROUTE4_TO]) {
@ -503,7 +505,10 @@ static int route4_change(struct net *net, struct sk_buff *in_skb,
if (!f) if (!f)
goto errout; goto errout;
tcf_exts_init(&f->exts, TCA_ROUTE4_ACT, TCA_ROUTE4_POLICE); err = tcf_exts_init(&f->exts, TCA_ROUTE4_ACT, TCA_ROUTE4_POLICE);
if (err < 0)
goto errout;
if (fold) { if (fold) {
f->id = fold->id; f->id = fold->id;
f->iif = fold->iif; f->iif = fold->iif;
@ -557,6 +562,7 @@ static int route4_change(struct net *net, struct sk_buff *in_skb,
return 0; return 0;
errout: errout:
tcf_exts_destroy(&f->exts);
kfree(f); kfree(f);
return err; return err;
} }

17
net/sched/cls_rsvp.h
View File

@ -487,10 +487,12 @@ static int rsvp_change(struct net *net, struct sk_buff *in_skb,
if (err < 0) if (err < 0)
return err; return err;
tcf_exts_init(&e, TCA_RSVP_ACT, TCA_RSVP_POLICE); err = tcf_exts_init(&e, TCA_RSVP_ACT, TCA_RSVP_POLICE);
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, ovr);
if (err < 0) if (err < 0)
return err; return err;
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, ovr);
if (err < 0)
goto errout2;
f = (struct rsvp_filter *)*arg; f = (struct rsvp_filter *)*arg;
if (f) { if (f) {
@ -506,7 +508,11 @@ static int rsvp_change(struct net *net, struct sk_buff *in_skb,
goto errout2; goto errout2;
} }
tcf_exts_init(&n->exts, TCA_RSVP_ACT, TCA_RSVP_POLICE); err = tcf_exts_init(&n->exts, TCA_RSVP_ACT, TCA_RSVP_POLICE);
if (err < 0) {
kfree(n);
goto errout2;
}
if (tb[TCA_RSVP_CLASSID]) { if (tb[TCA_RSVP_CLASSID]) {
n->res.classid = nla_get_u32(tb[TCA_RSVP_CLASSID]); n->res.classid = nla_get_u32(tb[TCA_RSVP_CLASSID]);
@ -530,7 +536,9 @@ static int rsvp_change(struct net *net, struct sk_buff *in_skb,
if (f == NULL) if (f == NULL)
goto errout2; goto errout2;
tcf_exts_init(&f->exts, TCA_RSVP_ACT, TCA_RSVP_POLICE); err = tcf_exts_init(&f->exts, TCA_RSVP_ACT, TCA_RSVP_POLICE);
if (err < 0)
goto errout;
h2 = 16; h2 = 16;
if (tb[TCA_RSVP_SRC]) { if (tb[TCA_RSVP_SRC]) {
memcpy(f->src, nla_data(tb[TCA_RSVP_SRC]), sizeof(f->src)); memcpy(f->src, nla_data(tb[TCA_RSVP_SRC]), sizeof(f->src));
@ -627,6 +635,7 @@ insert:
goto insert; goto insert;
errout: errout:
tcf_exts_destroy(&f->exts);
kfree(f); kfree(f);
errout2: errout2:
tcf_exts_destroy(&e); tcf_exts_destroy(&e);

90
net/sched/cls_tcindex.c
View File

@ -219,10 +219,10 @@ static const struct nla_policy tcindex_policy[TCA_TCINDEX_MAX + 1] = {
[TCA_TCINDEX_CLASSID] = { .type = NLA_U32 }, [TCA_TCINDEX_CLASSID] = { .type = NLA_U32 },
}; };
static void tcindex_filter_result_init(struct tcindex_filter_result *r) static int tcindex_filter_result_init(struct tcindex_filter_result *r)
{ {
memset(r, 0, sizeof(*r)); memset(r, 0, sizeof(*r));
tcf_exts_init(&r->exts, TCA_TCINDEX_ACT, TCA_TCINDEX_POLICE); return tcf_exts_init(&r->exts, TCA_TCINDEX_ACT, TCA_TCINDEX_POLICE);
} }
static void __tcindex_partial_destroy(struct rcu_head *head) static void __tcindex_partial_destroy(struct rcu_head *head)
@ -233,23 +233,57 @@ static void __tcindex_partial_destroy(struct rcu_head *head)
kfree(p); kfree(p);
} }
static void tcindex_free_perfect_hash(struct tcindex_data *cp)
{
int i;
for (i = 0; i < cp->hash; i++)
tcf_exts_destroy(&cp->perfect[i].exts);
kfree(cp->perfect);
}
static int tcindex_alloc_perfect_hash(struct tcindex_data *cp)
{
int i, err = 0;
cp->perfect = kcalloc(cp->hash, sizeof(struct tcindex_filter_result),
GFP_KERNEL);
if (!cp->perfect)
return -ENOMEM;
for (i = 0; i < cp->hash; i++) {
err = tcf_exts_init(&cp->perfect[i].exts,
TCA_TCINDEX_ACT, TCA_TCINDEX_POLICE);
if (err < 0)
goto errout;
}
return 0;
errout:
tcindex_free_perfect_hash(cp);
return err;
}
static int static int
tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base, tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base,
u32 handle, struct tcindex_data *p, u32 handle, struct tcindex_data *p,
struct tcindex_filter_result *r, struct nlattr **tb, struct tcindex_filter_result *r, struct nlattr **tb,
struct nlattr *est, bool ovr) struct nlattr *est, bool ovr)
{ {
int err, balloc = 0;
struct tcindex_filter_result new_filter_result, *old_r = r; struct tcindex_filter_result new_filter_result, *old_r = r;
struct tcindex_filter_result cr; struct tcindex_filter_result cr;
struct tcindex_data *cp, *oldp; struct tcindex_data *cp = NULL, *oldp;
struct tcindex_filter *f = NULL; /* make gcc behave */ struct tcindex_filter *f = NULL; /* make gcc behave */
int err, balloc = 0;
struct tcf_exts e; struct tcf_exts e;
tcf_exts_init(&e, TCA_TCINDEX_ACT, TCA_TCINDEX_POLICE); err = tcf_exts_init(&e, TCA_TCINDEX_ACT, TCA_TCINDEX_POLICE);
err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
if (err < 0) if (err < 0)
return err; return err;
err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
if (err < 0)
goto errout;
err = -ENOMEM; err = -ENOMEM;
/* tcindex_data attributes must look atomic to classifier/lookup so /* tcindex_data attributes must look atomic to classifier/lookup so
@ -270,19 +304,20 @@ tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base,
if (p->perfect) { if (p->perfect) {
int i; int i;
cp->perfect = kmemdup(p->perfect, if (tcindex_alloc_perfect_hash(cp) < 0)
sizeof(*r) * cp->hash, GFP_KERNEL);
if (!cp->perfect)
goto errout; goto errout;
for (i = 0; i < cp->hash; i++) for (i = 0; i < cp->hash; i++)
tcf_exts_init(&cp->perfect[i].exts, cp->perfect[i].res = p->perfect[i].res;
TCA_TCINDEX_ACT, TCA_TCINDEX_POLICE);
balloc = 1; balloc = 1;
} }
cp->h = p->h; cp->h = p->h;
tcindex_filter_result_init(&new_filter_result); err = tcindex_filter_result_init(&new_filter_result);
tcindex_filter_result_init(&cr); if (err < 0)
goto errout1;
err = tcindex_filter_result_init(&cr);
if (err < 0)
goto errout1;
if (old_r) if (old_r)
cr.res = r->res; cr.res = r->res;
@ -338,15 +373,8 @@ tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base,
err = -ENOMEM; err = -ENOMEM;
if (!cp->perfect && !cp->h) { if (!cp->perfect && !cp->h) {
if (valid_perfect_hash(cp)) { if (valid_perfect_hash(cp)) {
int i; if (tcindex_alloc_perfect_hash(cp) < 0)
cp->perfect = kcalloc(cp->hash, sizeof(*r), GFP_KERNEL);
if (!cp->perfect)
goto errout_alloc; goto errout_alloc;
for (i = 0; i < cp->hash; i++)
tcf_exts_init(&cp->perfect[i].exts,
TCA_TCINDEX_ACT,
TCA_TCINDEX_POLICE);
balloc = 1; balloc = 1;
} else { } else {
struct tcindex_filter __rcu **hash; struct tcindex_filter __rcu **hash;
@ -373,8 +401,12 @@ tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base,
if (!f) if (!f)
goto errout_alloc; goto errout_alloc;
f->key = handle; f->key = handle;
tcindex_filter_result_init(&f->result);
f->next = NULL; f->next = NULL;
err = tcindex_filter_result_init(&f->result);
if (err < 0) {
kfree(f);
goto errout_alloc;
}
} }
if (tb[TCA_TCINDEX_CLASSID]) { if (tb[TCA_TCINDEX_CLASSID]) {
@ -387,8 +419,13 @@ tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base,
else else
tcf_exts_change(tp, &cr.exts, &e); tcf_exts_change(tp, &cr.exts, &e);
if (old_r && old_r != r) if (old_r && old_r != r) {
tcindex_filter_result_init(old_r); err = tcindex_filter_result_init(old_r);
if (err < 0) {
kfree(f);
goto errout_alloc;
}
}
oldp = p; oldp = p;
r->res = cr.res; r->res = cr.res;
@ -415,9 +452,12 @@ tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base,
errout_alloc: errout_alloc:
if (balloc == 1) if (balloc == 1)
kfree(cp->perfect); tcindex_free_perfect_hash(cp);
else if (balloc == 2) else if (balloc == 2)
kfree(cp->h); kfree(cp->h);
errout1:
tcf_exts_destroy(&cr.exts);
tcf_exts_destroy(&new_filter_result.exts);
errout: errout:
kfree(cp); kfree(cp);
tcf_exts_destroy(&e); tcf_exts_destroy(&e);

21
net/sched/cls_u32.c
View File

@ -709,13 +709,15 @@ static int u32_set_parms(struct net *net, struct tcf_proto *tp,
struct tc_u_knode *n, struct nlattr **tb, struct tc_u_knode *n, struct nlattr **tb,
struct nlattr *est, bool ovr) struct nlattr *est, bool ovr)
{ {
int err;
struct tcf_exts e; struct tcf_exts e;
int err;
tcf_exts_init(&e, TCA_U32_ACT, TCA_U32_POLICE); err = tcf_exts_init(&e, TCA_U32_ACT, TCA_U32_POLICE);
err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
if (err < 0) if (err < 0)
return err; return err;
err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
if (err < 0)
goto errout;
err = -EINVAL; err = -EINVAL;
if (tb[TCA_U32_LINK]) { if (tb[TCA_U32_LINK]) {
@ -833,7 +835,10 @@ static struct tc_u_knode *u32_init_knode(struct tcf_proto *tp,
new->tp = tp; new->tp = tp;
memcpy(&new->sel, s, sizeof(*s) + s->nkeys*sizeof(struct tc_u32_key)); memcpy(&new->sel, s, sizeof(*s) + s->nkeys*sizeof(struct tc_u32_key));
tcf_exts_init(&new->exts, TCA_U32_ACT, TCA_U32_POLICE); if (tcf_exts_init(&new->exts, TCA_U32_ACT, TCA_U32_POLICE)) {
kfree(new);
return NULL;
}
return new; return new;
} }
@ -985,9 +990,12 @@ static int u32_change(struct net *net, struct sk_buff *in_skb,
n->handle = handle; n->handle = handle;
n->fshift = s->hmask ? ffs(ntohl(s->hmask)) - 1 : 0; n->fshift = s->hmask ? ffs(ntohl(s->hmask)) - 1 : 0;
n->flags = flags; n->flags = flags;
tcf_exts_init(&n->exts, TCA_U32_ACT, TCA_U32_POLICE);
n->tp = tp; n->tp = tp;
err = tcf_exts_init(&n->exts, TCA_U32_ACT, TCA_U32_POLICE);
if (err < 0)
goto errout;
#ifdef CONFIG_CLS_U32_MARK #ifdef CONFIG_CLS_U32_MARK
n->pcpu_success = alloc_percpu(u32); n->pcpu_success = alloc_percpu(u32);
if (!n->pcpu_success) { if (!n->pcpu_success) {
@ -1028,9 +1036,10 @@ static int u32_change(struct net *net, struct sk_buff *in_skb,
errhw: errhw:
#ifdef CONFIG_CLS_U32_MARK #ifdef CONFIG_CLS_U32_MARK
free_percpu(n->pcpu_success); free_percpu(n->pcpu_success);
errout:
#endif #endif
errout:
tcf_exts_destroy(&n->exts);
#ifdef CONFIG_CLS_U32_PERF #ifdef CONFIG_CLS_U32_PERF
free_percpu(n->pf); free_percpu(n->pf);
#endif #endif