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net_sched: cls: refactor out struct tcf_ext_map 

These information can be saved in tcf_exts, and this will
simplify the code.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
WANG Cong 2013-12-15 20:15:07 -08:00 committed by David S. Miller
parent 33be627159
commit 5da57f422d
11 changed files with 69 additions and 114 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
include/net/pkt_cls.h
View File

@ -65,21 +65,21 @@ struct tcf_exts {
__u32 type; /* for backward compat(TCA_OLD_COMPAT) */
struct list_head actions;
#endif
};
/* Map to export classifier specific extension TLV types to the
* generic extensions API. Unsupported extensions must be set to 0.
*/
struct tcf_ext_map {
/* Map to export classifier specific extension TLV types to the
* generic extensions API. Unsupported extensions must be set to 0.
*/
int action;
int police;
};
static inline void tcf_exts_init(struct tcf_exts *exts)
static inline void tcf_exts_init(struct tcf_exts *exts, int action, int police)
{
#ifdef CONFIG_NET_CLS_ACT
exts->type = 0;
INIT_LIST_HEAD(&exts->actions);
#endif
exts->action = action;
exts->police = police;
}
/**
@ -136,15 +136,12 @@ tcf_exts_exec(struct sk_buff *skb, struct tcf_exts *exts,
int tcf_exts_validate(struct net *net, struct tcf_proto *tp,
struct nlattr **tb, struct nlattr *rate_tlv,
struct tcf_exts *exts,
const struct tcf_ext_map *map);
struct tcf_exts *exts);
void tcf_exts_destroy(struct tcf_proto *tp, struct tcf_exts *exts);
void tcf_exts_change(struct tcf_proto *tp, struct tcf_exts *dst,
struct tcf_exts *src);
int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts,
const struct tcf_ext_map *map);
int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts,
const struct tcf_ext_map *map);
int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts);
int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts);
/**
* struct tcf_pkt_info - packet information

31
net/sched/cls_api.c
View File

@ -507,18 +507,15 @@ void tcf_exts_destroy(struct tcf_proto *tp, struct tcf_exts *exts)
EXPORT_SYMBOL(tcf_exts_destroy);
int tcf_exts_validate(struct net *net, struct tcf_proto *tp, struct nlattr **tb,
struct nlattr *rate_tlv, struct tcf_exts *exts,
const struct tcf_ext_map *map)
struct nlattr *rate_tlv, struct tcf_exts *exts)
{
memset(exts, 0, sizeof(*exts));
#ifdef CONFIG_NET_CLS_ACT
{
struct tc_action *act;
INIT_LIST_HEAD(&exts->actions);
if (map->police && tb[map->police]) {
act = tcf_action_init_1(net, tb[map->police], rate_tlv,
if (exts->police && tb[exts->police]) {
act = tcf_action_init_1(net, tb[exts->police], rate_tlv,
"police", TCA_ACT_NOREPLACE,
TCA_ACT_BIND);
if (IS_ERR(act))
@ -526,9 +523,9 @@ int tcf_exts_validate(struct net *net, struct tcf_proto *tp, struct nlattr **tb,
act->type = exts->type = TCA_OLD_COMPAT;
list_add(&act->list, &exts->actions);
} else if (map->action && tb[map->action]) {
} else if (exts->action && tb[exts->action]) {
int err;
err = tcf_action_init(net, tb[map->action], rate_tlv,
err = tcf_action_init(net, tb[exts->action], rate_tlv,
NULL, TCA_ACT_NOREPLACE,
TCA_ACT_BIND, &exts->actions);
if (err)
@ -536,8 +533,8 @@ int tcf_exts_validate(struct net *net, struct tcf_proto *tp, struct nlattr **tb,
}
}
#else
if ((map->action && tb[map->action]) ||
(map->police && tb[map->police]))
if ((exts->action && tb[exts->action]) ||
(exts->police && tb[exts->police]))
return -EOPNOTSUPP;
#endif
@ -564,11 +561,10 @@ EXPORT_SYMBOL(tcf_exts_change);
#define tcf_exts_first_act(ext) \
list_first_entry(&(exts)->actions, struct tc_action, list)
int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts,
const struct tcf_ext_map *map)
int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts)
{
#ifdef CONFIG_NET_CLS_ACT
if (map->action && !list_empty(&exts->actions)) {
if (exts->action && !list_empty(&exts->actions)) {
/*
* again for backward compatible mode - we want
* to work with both old and new modes of entering
@ -576,15 +572,15 @@ int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts,
*/
struct nlattr *nest;
if (exts->type != TCA_OLD_COMPAT) {
nest = nla_nest_start(skb, map->action);
nest = nla_nest_start(skb, exts->action);
if (nest == NULL)
goto nla_put_failure;
if (tcf_action_dump(skb, &exts->actions, 0, 0) < 0)
goto nla_put_failure;
nla_nest_end(skb, nest);
} else if (map->police) {
} else if (exts->police) {
struct tc_action *act = tcf_exts_first_act(exts);
nest = nla_nest_start(skb, map->police);
nest = nla_nest_start(skb, exts->police);
if (nest == NULL)
goto nla_put_failure;
if (tcf_action_dump_old(skb, act, 0, 0) < 0)
@ -600,8 +596,7 @@ nla_put_failure: __attribute__ ((unused))
EXPORT_SYMBOL(tcf_exts_dump);
int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts,
const struct tcf_ext_map *map)
int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts)
{
#ifdef CONFIG_NET_CLS_ACT
struct tc_action *a = tcf_exts_first_act(exts);

14
net/sched/cls_basic.c
View File

@ -34,11 +34,6 @@ struct basic_filter {
struct list_head link;
};
static const struct tcf_ext_map basic_ext_map = {
.action = TCA_BASIC_ACT,
.police = TCA_BASIC_POLICE
};
static int basic_classify(struct sk_buff *skb, const struct tcf_proto *tp,
struct tcf_result *res)
{
@ -141,7 +136,8 @@ static int basic_set_parms(struct net *net, struct tcf_proto *tp,
struct tcf_exts e;
struct tcf_ematch_tree t;
err = tcf_exts_validate(net, tp, tb, est, &e, &basic_ext_map);
tcf_exts_init(&e, TCA_BASIC_ACT, TCA_BASIC_POLICE);
err = tcf_exts_validate(net, tp, tb, est, &e);
if (err < 0)
return err;
@ -191,7 +187,7 @@ static int basic_change(struct net *net, struct sk_buff *in_skb,
if (f == NULL)
goto errout;
tcf_exts_init(&f->exts);
tcf_exts_init(&f->exts, TCA_BASIC_ACT, TCA_BASIC_POLICE);
err = -EINVAL;
if (handle)
f->handle = handle;
@ -264,13 +260,13 @@ static int basic_dump(struct tcf_proto *tp, unsigned long fh,
nla_put_u32(skb, TCA_BASIC_CLASSID, f->res.classid))
goto nla_put_failure;
if (tcf_exts_dump(skb, &f->exts, &basic_ext_map) < 0 ||
if (tcf_exts_dump(skb, &f->exts) < 0 ||
tcf_em_tree_dump(skb, &f->ematches, TCA_BASIC_EMATCHES) < 0)
goto nla_put_failure;
nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &f->exts, &basic_ext_map) < 0)
if (tcf_exts_dump_stats(skb, &f->exts) < 0)
goto nla_put_failure;
return skb->len;

14
net/sched/cls_bpf.c
View File

@ -46,11 +46,6 @@ static const struct nla_policy bpf_policy[TCA_BPF_MAX + 1] = {
.len = sizeof(struct sock_filter) * BPF_MAXINSNS },
};
static const struct tcf_ext_map bpf_ext_map = {
.action = TCA_BPF_ACT,
.police = TCA_BPF_POLICE,
};
static int cls_bpf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
struct tcf_result *res)
{
@ -174,7 +169,8 @@ static int cls_bpf_modify_existing(struct net *net, struct tcf_proto *tp,
if (!tb[TCA_BPF_OPS_LEN] || !tb[TCA_BPF_OPS] || !tb[TCA_BPF_CLASSID])
return -EINVAL;
ret = tcf_exts_validate(net, tp, tb, est, &exts, &bpf_ext_map);
tcf_exts_init(&exts, TCA_BPF_ACT, TCA_BPF_POLICE);
ret = tcf_exts_validate(net, tp, tb, est, &exts);
if (ret < 0)
return ret;
@ -271,7 +267,7 @@ static int cls_bpf_change(struct net *net, struct sk_buff *in_skb,
if (prog == NULL)
return -ENOBUFS;
tcf_exts_init(&prog->exts);
tcf_exts_init(&prog->exts, TCA_BPF_ACT, TCA_BPF_POLICE);
if (handle == 0)
prog->handle = cls_bpf_grab_new_handle(tp, head);
else
@ -326,12 +322,12 @@ static int cls_bpf_dump(struct tcf_proto *tp, unsigned long fh,
memcpy(nla_data(nla), prog->bpf_ops, nla_len(nla));
if (tcf_exts_dump(skb, &prog->exts, &bpf_ext_map) < 0)
if (tcf_exts_dump(skb, &prog->exts) < 0)
goto nla_put_failure;
nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &prog->exts, &bpf_ext_map) < 0)
if (tcf_exts_dump_stats(skb, &prog->exts) < 0)
goto nla_put_failure;
return skb->len;

15
net/sched/cls_cgroup.c
View File

@ -172,11 +172,6 @@ static int cls_cgroup_init(struct tcf_proto *tp)
return 0;
}
static const struct tcf_ext_map cgroup_ext_map = {
.action = TCA_CGROUP_ACT,
.police = TCA_CGROUP_POLICE,
};
static const struct nla_policy cgroup_policy[TCA_CGROUP_MAX + 1] = {
[TCA_CGROUP_EMATCHES] = { .type = NLA_NESTED },
};
@ -203,7 +198,7 @@ static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
if (head == NULL)
return -ENOBUFS;
tcf_exts_init(&head->exts);
tcf_exts_init(&head->exts, TCA_CGROUP_ACT, TCA_CGROUP_POLICE);
head->handle = handle;
tcf_tree_lock(tp);
@ -219,8 +214,8 @@ static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
if (err < 0)
return err;
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e,
&cgroup_ext_map);
tcf_exts_init(&e, TCA_CGROUP_ACT, TCA_CGROUP_POLICE);
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e);
if (err < 0)
return err;
@ -278,13 +273,13 @@ static int cls_cgroup_dump(struct tcf_proto *tp, unsigned long fh,
if (nest == NULL)
goto nla_put_failure;
if (tcf_exts_dump(skb, &head->exts, &cgroup_ext_map) < 0 ||
if (tcf_exts_dump(skb, &head->exts) < 0 ||
tcf_em_tree_dump(skb, &head->ematches, TCA_CGROUP_EMATCHES) < 0)
goto nla_put_failure;
nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &head->exts, &cgroup_ext_map) < 0)
if (tcf_exts_dump_stats(skb, &head->exts) < 0)
goto nla_put_failure;
return skb->len;

14
net/sched/cls_flow.c
View File

@ -56,11 +56,6 @@ struct flow_filter {
u32 hashrnd;
};
static const struct tcf_ext_map flow_ext_map = {
.action = TCA_FLOW_ACT,
.police = TCA_FLOW_POLICE,
};
static inline u32 addr_fold(void *addr)
{
unsigned long a = (unsigned long)addr;
@ -397,7 +392,8 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
return -EOPNOTSUPP;
}
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, &flow_ext_map);
tcf_exts_init(&e, TCA_FLOW_ACT, TCA_FLOW_POLICE);
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e);
if (err < 0)
return err;
@ -455,7 +451,7 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
f->handle = handle;
f->mask = ~0U;
tcf_exts_init(&f->exts);
tcf_exts_init(&f->exts, TCA_FLOW_ACT, TCA_FLOW_POLICE);
get_random_bytes(&f->hashrnd, 4);
f->perturb_timer.function = flow_perturbation;
@ -609,7 +605,7 @@ static int flow_dump(struct tcf_proto *tp, unsigned long fh,
nla_put_u32(skb, TCA_FLOW_PERTURB, f->perturb_period / HZ))
goto nla_put_failure;
if (tcf_exts_dump(skb, &f->exts, &flow_ext_map) < 0)
if (tcf_exts_dump(skb, &f->exts) < 0)
goto nla_put_failure;
#ifdef CONFIG_NET_EMATCH
if (f->ematches.hdr.nmatches &&
@ -618,7 +614,7 @@ static int flow_dump(struct tcf_proto *tp, unsigned long fh,
#endif
nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &f->exts, &flow_ext_map) < 0)
if (tcf_exts_dump_stats(skb, &f->exts) < 0)
goto nla_put_failure;
return skb->len;

14
net/sched/cls_fw.c
View File

@ -46,11 +46,6 @@ struct fw_filter {
struct tcf_exts exts;
};
static const struct tcf_ext_map fw_ext_map = {
.action = TCA_FW_ACT,
.police = TCA_FW_POLICE
};
static inline int fw_hash(u32 handle)
{
if (HTSIZE == 4096)
@ -200,7 +195,8 @@ fw_change_attrs(struct net *net, struct tcf_proto *tp, struct fw_filter *f,
u32 mask;
int err;
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, &fw_ext_map);
tcf_exts_init(&e, TCA_FW_ACT, TCA_FW_POLICE);
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e);
if (err < 0)
return err;
@ -280,7 +276,7 @@ static int fw_change(struct net *net, struct sk_buff *in_skb,
if (f == NULL)
return -ENOBUFS;
tcf_exts_init(&f->exts);
tcf_exts_init(&f->exts, TCA_FW_ACT, TCA_FW_POLICE);
f->id = handle;
err = fw_change_attrs(net, tp, f, tb, tca, base);
@ -360,12 +356,12 @@ static int fw_dump(struct tcf_proto *tp, unsigned long fh,
nla_put_u32(skb, TCA_FW_MASK, head->mask))
goto nla_put_failure;
if (tcf_exts_dump(skb, &f->exts, &fw_ext_map) < 0)
if (tcf_exts_dump(skb, &f->exts) < 0)
goto nla_put_failure;
nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &f->exts, &fw_ext_map) < 0)
if (tcf_exts_dump_stats(skb, &f->exts) < 0)
goto nla_put_failure;
return skb->len;

14
net/sched/cls_route.c
View File

@ -59,11 +59,6 @@ struct route4_filter {
#define ROUTE4_FAILURE ((struct route4_filter *)(-1L))
static const struct tcf_ext_map route_ext_map = {
.police = TCA_ROUTE4_POLICE,
.action = TCA_ROUTE4_ACT
};
static inline int route4_fastmap_hash(u32 id, int iif)
{
return id & 0xF;
@ -347,7 +342,8 @@ static int route4_set_parms(struct net *net, struct tcf_proto *tp,
struct route4_bucket *b;
struct tcf_exts e;
err = tcf_exts_validate(net, tp, tb, est, &e, &route_ext_map);
tcf_exts_init(&e, TCA_ROUTE4_ACT, TCA_ROUTE4_POLICE);
err = tcf_exts_validate(net, tp, tb, est, &e);
if (err < 0)
return err;
@ -481,7 +477,7 @@ static int route4_change(struct net *net, struct sk_buff *in_skb,
if (f == NULL)
goto errout;
tcf_exts_init(&f->exts);
tcf_exts_init(&f->exts, TCA_ROUTE4_ACT, TCA_ROUTE4_POLICE);
err = route4_set_parms(net, tp, base, f, handle, head, tb,
tca[TCA_RATE], 1);
if (err < 0)
@ -590,12 +586,12 @@ static int route4_dump(struct tcf_proto *tp, unsigned long fh,
nla_put_u32(skb, TCA_ROUTE4_CLASSID, f->res.classid))
goto nla_put_failure;
if (tcf_exts_dump(skb, &f->exts, &route_ext_map) < 0)
if (tcf_exts_dump(skb, &f->exts) < 0)
goto nla_put_failure;
nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &f->exts, &route_ext_map) < 0)
if (tcf_exts_dump_stats(skb, &f->exts) < 0)
goto nla_put_failure;
return skb->len;

14
net/sched/cls_rsvp.h
View File

@ -116,11 +116,6 @@ static inline unsigned int hash_src(__be32 *src)
return h & 0xF;
}
static struct tcf_ext_map rsvp_ext_map = {
.police = TCA_RSVP_POLICE,
.action = TCA_RSVP_ACT
};
#define RSVP_APPLY_RESULT() \
{ \
int r = tcf_exts_exec(skb, &f->exts, res); \
@ -440,7 +435,8 @@ static int rsvp_change(struct net *net, struct sk_buff *in_skb,
if (err < 0)
return err;
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, &rsvp_ext_map);
tcf_exts_init(&e, TCA_RSVP_ACT, TCA_RSVP_POLICE);
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e);
if (err < 0)
return err;
@ -471,7 +467,7 @@ static int rsvp_change(struct net *net, struct sk_buff *in_skb,
if (f == NULL)
goto errout2;
tcf_exts_init(&f->exts);
tcf_exts_init(&f->exts, TCA_RSVP_ACT, TCA_RSVP_POLICE);
h2 = 16;
if (tb[TCA_RSVP_SRC]) {
memcpy(f->src, nla_data(tb[TCA_RSVP_SRC]), sizeof(f->src));
@ -634,12 +630,12 @@ static int rsvp_dump(struct tcf_proto *tp, unsigned long fh,
nla_put(skb, TCA_RSVP_SRC, sizeof(f->src), f->src))
goto nla_put_failure;
if (tcf_exts_dump(skb, &f->exts, &rsvp_ext_map) < 0)
if (tcf_exts_dump(skb, &f->exts) < 0)
goto nla_put_failure;
nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &f->exts, &rsvp_ext_map) < 0)
if (tcf_exts_dump_stats(skb, &f->exts) < 0)
goto nla_put_failure;
return skb->len;

16
net/sched/cls_tcindex.c
View File

@ -50,11 +50,6 @@ struct tcindex_data {
int fall_through; /* 0: only classify if explicit match */
};
static const struct tcf_ext_map tcindex_ext_map = {
.police = TCA_TCINDEX_POLICE,
.action = TCA_TCINDEX_ACT
};
static inline int
tcindex_filter_is_set(struct tcindex_filter_result *r)
{
@ -209,19 +204,20 @@ tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base,
struct tcindex_filter *f = NULL; /* make gcc behave */
struct tcf_exts e;
err = tcf_exts_validate(net, tp, tb, est, &e, &tcindex_ext_map);
tcf_exts_init(&e, TCA_TCINDEX_ACT, TCA_TCINDEX_POLICE);
err = tcf_exts_validate(net, tp, tb, est, &e);
if (err < 0)
return err;
memcpy(&cp, p, sizeof(cp));
memset(&new_filter_result, 0, sizeof(new_filter_result));
tcf_exts_init(&new_filter_result.exts);
tcf_exts_init(&new_filter_result.exts, TCA_TCINDEX_ACT, TCA_TCINDEX_POLICE);
if (old_r)
memcpy(&cr, r, sizeof(cr));
else {
memset(&cr, 0, sizeof(cr));
tcf_exts_init(&cr.exts);
tcf_exts_init(&cr.exts, TCA_TCINDEX_ACT, TCA_TCINDEX_POLICE);
}
if (tb[TCA_TCINDEX_HASH])
@ -471,11 +467,11 @@ static int tcindex_dump(struct tcf_proto *tp, unsigned long fh,
nla_put_u32(skb, TCA_TCINDEX_CLASSID, r->res.classid))
goto nla_put_failure;
if (tcf_exts_dump(skb, &r->exts, &tcindex_ext_map) < 0)
if (tcf_exts_dump(skb, &r->exts) < 0)
goto nla_put_failure;
nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &r->exts, &tcindex_ext_map) < 0)
if (tcf_exts_dump_stats(skb, &r->exts) < 0)
goto nla_put_failure;
}

14
net/sched/cls_u32.c
View File

@ -79,11 +79,6 @@ struct tc_u_common {
u32 hgenerator;
};
static const struct tcf_ext_map u32_ext_map = {
.action = TCA_U32_ACT,
.police = TCA_U32_POLICE
};
static inline unsigned int u32_hash_fold(__be32 key,
const struct tc_u32_sel *sel,
u8 fshift)
@ -496,7 +491,8 @@ static int u32_set_parms(struct net *net, struct tcf_proto *tp,
int err;
struct tcf_exts e;
err = tcf_exts_validate(net, tp, tb, est, &e, &u32_ext_map);
tcf_exts_init(&e, TCA_U32_ACT, TCA_U32_POLICE);
err = tcf_exts_validate(net, tp, tb, est, &e);
if (err < 0)
return err;
@ -646,7 +642,7 @@ static int u32_change(struct net *net, struct sk_buff *in_skb,
n->ht_up = ht;
n->handle = handle;
n->fshift = s->hmask ? ffs(ntohl(s->hmask)) - 1 : 0;
tcf_exts_init(&n->exts);
tcf_exts_init(&n->exts, TCA_U32_ACT, TCA_U32_POLICE);
#ifdef CONFIG_CLS_U32_MARK
if (tb[TCA_U32_MARK]) {
@ -760,7 +756,7 @@ static int u32_dump(struct tcf_proto *tp, unsigned long fh,
goto nla_put_failure;
#endif
if (tcf_exts_dump(skb, &n->exts, &u32_ext_map) < 0)
if (tcf_exts_dump(skb, &n->exts) < 0)
goto nla_put_failure;
#ifdef CONFIG_NET_CLS_IND
@ -779,7 +775,7 @@ static int u32_dump(struct tcf_proto *tp, unsigned long fh,
nla_nest_end(skb, nest);
if (TC_U32_KEY(n->handle))
if (tcf_exts_dump_stats(skb, &n->exts, &u32_ext_map) < 0)
if (tcf_exts_dump_stats(skb, &n->exts) < 0)
goto nla_put_failure;
return skb->len;