Commit 5da57f42 authored by WANG Cong's avatar WANG Cong Committed by David S. Miller

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: default avatarCong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: default avatarJamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 33be6271
......@@ -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
......
......@@ -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);
......
......@@ -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;
......
......@@ -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;
......
......@@ -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;
......
......@@ -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;
......
......@@ -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;
......
......@@ -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;
......
......@@ -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;
......
......@@ -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;
}
......
......@@ -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;
......
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