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Diffstat (limited to 'net/sched/act_api.c')
-rw-r--r--net/sched/act_api.c80
1 files changed, 65 insertions, 15 deletions
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index f2e9ed34a963..02fcb0c78a28 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -110,6 +110,8 @@ static int tcf_dump_walker(struct tcf_hashinfo *hinfo, struct sk_buff *skb,
struct netlink_callback *cb)
{
int err = 0, index = -1, i = 0, s_i = 0, n_i = 0;
+ u32 act_flags = cb->args[2];
+ unsigned long jiffy_since = cb->args[3];
struct nlattr *nest;
spin_lock_bh(&hinfo->lock);
@@ -127,6 +129,11 @@ static int tcf_dump_walker(struct tcf_hashinfo *hinfo, struct sk_buff *skb,
if (index < s_i)
continue;
+ if (jiffy_since &&
+ time_after(jiffy_since,
+ (unsigned long)p->tcfa_tm.lastuse))
+ continue;
+
nest = nla_nest_start(skb, n_i);
if (nest == NULL)
goto nla_put_failure;
@@ -138,14 +145,20 @@ static int tcf_dump_walker(struct tcf_hashinfo *hinfo, struct sk_buff *skb,
}
nla_nest_end(skb, nest);
n_i++;
- if (n_i >= TCA_ACT_MAX_PRIO)
+ if (!(act_flags & TCA_FLAG_LARGE_DUMP_ON) &&
+ n_i >= TCA_ACT_MAX_PRIO)
goto done;
}
}
done:
+ if (index >= 0)
+ cb->args[0] = index + 1;
+
spin_unlock_bh(&hinfo->lock);
- if (n_i)
- cb->args[0] += n_i;
+ if (n_i) {
+ if (act_flags & TCA_FLAG_LARGE_DUMP_ON)
+ cb->args[1] = n_i;
+ }
return n_i;
nla_put_failure:
@@ -460,9 +473,10 @@ static struct tc_action_ops *tc_lookup_action(struct nlattr *kind)
int tcf_action_exec(struct sk_buff *skb, struct tc_action **actions,
int nr_actions, struct tcf_result *res)
{
- int ret = -1, i;
u32 jmp_prgcnt = 0;
u32 jmp_ttl = TCA_ACT_MAX_PRIO; /*matches actions per filter */
+ int i;
+ int ret = TC_ACT_OK;
if (skb_skip_tc_classify(skb))
return TC_ACT_OK;
@@ -1068,11 +1082,18 @@ static int tcf_action_add(struct net *net, struct nlattr *nla,
return tcf_add_notify(net, n, &actions, portid);
}
+static u32 tcaa_root_flags_allowed = TCA_FLAG_LARGE_DUMP_ON;
+static const struct nla_policy tcaa_policy[TCA_ROOT_MAX + 1] = {
+ [TCA_ROOT_FLAGS] = { .type = NLA_BITFIELD32,
+ .validation_data = &tcaa_root_flags_allowed },
+ [TCA_ROOT_TIME_DELTA] = { .type = NLA_U32 },
+};
+
static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n,
struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
- struct nlattr *tca[TCA_ACT_MAX + 1];
+ struct nlattr *tca[TCA_ROOT_MAX + 1];
u32 portid = skb ? NETLINK_CB(skb).portid : 0;
int ret = 0, ovr = 0;
@@ -1080,7 +1101,7 @@ static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n,
!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
- ret = nlmsg_parse(n, sizeof(struct tcamsg), tca, TCA_ACT_MAX, NULL,
+ ret = nlmsg_parse(n, sizeof(struct tcamsg), tca, TCA_ROOT_MAX, NULL,
extack);
if (ret < 0)
return ret;
@@ -1121,16 +1142,12 @@ replay:
return ret;
}
-static struct nlattr *find_dump_kind(const struct nlmsghdr *n)
+static struct nlattr *find_dump_kind(struct nlattr **nla)
{
struct nlattr *tb1, *tb2[TCA_ACT_MAX + 1];
struct nlattr *tb[TCA_ACT_MAX_PRIO + 1];
- struct nlattr *nla[TCAA_MAX + 1];
struct nlattr *kind;
- if (nlmsg_parse(n, sizeof(struct tcamsg), nla, TCAA_MAX,
- NULL, NULL) < 0)
- return NULL;
tb1 = nla[TCA_ACT_TAB];
if (tb1 == NULL)
return NULL;
@@ -1157,8 +1174,20 @@ static int tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
struct tc_action_ops *a_o;
int ret = 0;
struct tcamsg *t = (struct tcamsg *) nlmsg_data(cb->nlh);
- struct nlattr *kind = find_dump_kind(cb->nlh);
+ struct nlattr *tb[TCA_ROOT_MAX + 1];
+ struct nlattr *count_attr = NULL;
+ unsigned long jiffy_since = 0;
+ struct nlattr *kind = NULL;
+ struct nla_bitfield32 bf;
+ u32 msecs_since = 0;
+ u32 act_count = 0;
+
+ ret = nlmsg_parse(cb->nlh, sizeof(struct tcamsg), tb, TCA_ROOT_MAX,
+ tcaa_policy, NULL);
+ if (ret < 0)
+ return ret;
+ kind = find_dump_kind(tb);
if (kind == NULL) {
pr_info("tc_dump_action: action bad kind\n");
return 0;
@@ -1168,14 +1197,32 @@ static int tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
if (a_o == NULL)
return 0;
+ cb->args[2] = 0;
+ if (tb[TCA_ROOT_FLAGS]) {
+ bf = nla_get_bitfield32(tb[TCA_ROOT_FLAGS]);
+ cb->args[2] = bf.value;
+ }
+
+ if (tb[TCA_ROOT_TIME_DELTA]) {
+ msecs_since = nla_get_u32(tb[TCA_ROOT_TIME_DELTA]);
+ }
+
nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
cb->nlh->nlmsg_type, sizeof(*t), 0);
if (!nlh)
goto out_module_put;
+
+ if (msecs_since)
+ jiffy_since = jiffies - msecs_to_jiffies(msecs_since);
+
t = nlmsg_data(nlh);
t->tca_family = AF_UNSPEC;
t->tca__pad1 = 0;
t->tca__pad2 = 0;
+ cb->args[3] = jiffy_since;
+ count_attr = nla_reserve(skb, TCA_ROOT_COUNT, sizeof(u32));
+ if (!count_attr)
+ goto out_module_put;
nest = nla_nest_start(skb, TCA_ACT_TAB);
if (nest == NULL)
@@ -1188,6 +1235,9 @@ static int tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
if (ret > 0) {
nla_nest_end(skb, nest);
ret = skb->len;
+ act_count = cb->args[1];
+ memcpy(nla_data(count_attr), &act_count, sizeof(u32));
+ cb->args[1] = 0;
} else
nlmsg_trim(skb, b);
@@ -1205,10 +1255,10 @@ out_module_put:
static int __init tc_action_init(void)
{
- rtnl_register(PF_UNSPEC, RTM_NEWACTION, tc_ctl_action, NULL, NULL);
- rtnl_register(PF_UNSPEC, RTM_DELACTION, tc_ctl_action, NULL, NULL);
+ rtnl_register(PF_UNSPEC, RTM_NEWACTION, tc_ctl_action, NULL, 0);
+ rtnl_register(PF_UNSPEC, RTM_DELACTION, tc_ctl_action, NULL, 0);
rtnl_register(PF_UNSPEC, RTM_GETACTION, tc_ctl_action, tc_dump_action,
- NULL);
+ 0);
return 0;
}