[NET_SCHED]: Convert packet schedulers from rtnetlink to new netlink API
Convert packet schedulers to use the netlink API. Unfortunately a gradual
conversion is not possible without breaking compilation in the middle or
adding lots of casts, so this patch converts them all in one step. The
patch has been mostly generated automatically with some minor edits to
at least allow seperate conversion of classifiers and actions.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index dc89a93..7abb028 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -213,14 +213,14 @@
/* Find queueing discipline by name */
-static struct Qdisc_ops *qdisc_lookup_ops(struct rtattr *kind)
+static struct Qdisc_ops *qdisc_lookup_ops(struct nlattr *kind)
{
struct Qdisc_ops *q = NULL;
if (kind) {
read_lock(&qdisc_mod_lock);
for (q = qdisc_base; q; q = q->next) {
- if (rtattr_strcmp(kind, q->id) == 0) {
+ if (nla_strcmp(kind, q->id) == 0) {
if (!try_module_get(q->owner))
q = NULL;
break;
@@ -233,7 +233,7 @@
static struct qdisc_rate_table *qdisc_rtab_list;
-struct qdisc_rate_table *qdisc_get_rtab(struct tc_ratespec *r, struct rtattr *tab)
+struct qdisc_rate_table *qdisc_get_rtab(struct tc_ratespec *r, struct nlattr *tab)
{
struct qdisc_rate_table *rtab;
@@ -244,14 +244,14 @@
}
}
- if (tab == NULL || r->rate == 0 || r->cell_log == 0 || RTA_PAYLOAD(tab) != 1024)
+ if (tab == NULL || r->rate == 0 || r->cell_log == 0 || nla_len(tab) != 1024)
return NULL;
rtab = kmalloc(sizeof(*rtab), GFP_KERNEL);
if (rtab) {
rtab->rate = *r;
rtab->refcnt = 1;
- memcpy(rtab->data, RTA_DATA(tab), 1024);
+ memcpy(rtab->data, nla_data(tab), 1024);
rtab->next = qdisc_rtab_list;
qdisc_rtab_list = rtab;
}
@@ -445,10 +445,10 @@
static struct Qdisc *
qdisc_create(struct net_device *dev, u32 parent, u32 handle,
- struct rtattr **tca, int *errp)
+ struct nlattr **tca, int *errp)
{
int err;
- struct rtattr *kind = tca[TCA_KIND-1];
+ struct nlattr *kind = tca[TCA_KIND];
struct Qdisc *sch;
struct Qdisc_ops *ops;
@@ -456,7 +456,7 @@
#ifdef CONFIG_KMOD
if (ops == NULL && kind != NULL) {
char name[IFNAMSIZ];
- if (rtattr_strlcpy(name, kind, IFNAMSIZ) < IFNAMSIZ) {
+ if (nla_strlcpy(name, kind, IFNAMSIZ) < IFNAMSIZ) {
/* We dropped the RTNL semaphore in order to
* perform the module load. So, even if we
* succeeded in loading the module we have to
@@ -509,11 +509,11 @@
sch->handle = handle;
- if (!ops->init || (err = ops->init(sch, tca[TCA_OPTIONS-1])) == 0) {
- if (tca[TCA_RATE-1]) {
+ if (!ops->init || (err = ops->init(sch, tca[TCA_OPTIONS])) == 0) {
+ if (tca[TCA_RATE]) {
err = gen_new_estimator(&sch->bstats, &sch->rate_est,
sch->stats_lock,
- tca[TCA_RATE-1]);
+ tca[TCA_RATE]);
if (err) {
/*
* Any broken qdiscs that would require
@@ -541,20 +541,20 @@
return NULL;
}
-static int qdisc_change(struct Qdisc *sch, struct rtattr **tca)
+static int qdisc_change(struct Qdisc *sch, struct nlattr **tca)
{
- if (tca[TCA_OPTIONS-1]) {
+ if (tca[TCA_OPTIONS]) {
int err;
if (sch->ops->change == NULL)
return -EINVAL;
- err = sch->ops->change(sch, tca[TCA_OPTIONS-1]);
+ err = sch->ops->change(sch, tca[TCA_OPTIONS]);
if (err)
return err;
}
- if (tca[TCA_RATE-1])
+ if (tca[TCA_RATE])
gen_replace_estimator(&sch->bstats, &sch->rate_est,
- sch->stats_lock, tca[TCA_RATE-1]);
+ sch->stats_lock, tca[TCA_RATE]);
return 0;
}
@@ -606,7 +606,7 @@
{
struct net *net = skb->sk->sk_net;
struct tcmsg *tcm = NLMSG_DATA(n);
- struct rtattr **tca = arg;
+ struct nlattr *tca[TCA_MAX + 1];
struct net_device *dev;
u32 clid = tcm->tcm_parent;
struct Qdisc *q = NULL;
@@ -619,6 +619,10 @@
if ((dev = __dev_get_by_index(&init_net, tcm->tcm_ifindex)) == NULL)
return -ENODEV;
+ err = nlmsg_parse(n, sizeof(*tcm), tca, TCA_MAX, NULL);
+ if (err < 0)
+ return err;
+
if (clid) {
if (clid != TC_H_ROOT) {
if (TC_H_MAJ(clid) != TC_H_MAJ(TC_H_INGRESS)) {
@@ -641,7 +645,7 @@
return -ENOENT;
}
- if (tca[TCA_KIND-1] && rtattr_strcmp(tca[TCA_KIND-1], q->ops->id))
+ if (tca[TCA_KIND] && nla_strcmp(tca[TCA_KIND], q->ops->id))
return -EINVAL;
if (n->nlmsg_type == RTM_DELQDISC) {
@@ -671,7 +675,7 @@
{
struct net *net = skb->sk->sk_net;
struct tcmsg *tcm;
- struct rtattr **tca;
+ struct nlattr *tca[TCA_MAX + 1];
struct net_device *dev;
u32 clid;
struct Qdisc *q, *p;
@@ -683,13 +687,16 @@
replay:
/* Reinit, just in case something touches this. */
tcm = NLMSG_DATA(n);
- tca = arg;
clid = tcm->tcm_parent;
q = p = NULL;
if ((dev = __dev_get_by_index(&init_net, tcm->tcm_ifindex)) == NULL)
return -ENODEV;
+ err = nlmsg_parse(n, sizeof(*tcm), tca, TCA_MAX, NULL);
+ if (err < 0)
+ return err;
+
if (clid) {
if (clid != TC_H_ROOT) {
if (clid != TC_H_INGRESS) {
@@ -717,7 +724,7 @@
goto create_n_graft;
if (n->nlmsg_flags&NLM_F_EXCL)
return -EEXIST;
- if (tca[TCA_KIND-1] && rtattr_strcmp(tca[TCA_KIND-1], q->ops->id))
+ if (tca[TCA_KIND] && nla_strcmp(tca[TCA_KIND], q->ops->id))
return -EINVAL;
if (q == p ||
(p && check_loop(q, p, 0)))
@@ -750,8 +757,8 @@
if ((n->nlmsg_flags&NLM_F_CREATE) &&
(n->nlmsg_flags&NLM_F_REPLACE) &&
((n->nlmsg_flags&NLM_F_EXCL) ||
- (tca[TCA_KIND-1] &&
- rtattr_strcmp(tca[TCA_KIND-1], q->ops->id))))
+ (tca[TCA_KIND] &&
+ nla_strcmp(tca[TCA_KIND], q->ops->id))))
goto create_n_graft;
}
}
@@ -766,7 +773,7 @@
return -ENOENT;
if (n->nlmsg_flags&NLM_F_EXCL)
return -EEXIST;
- if (tca[TCA_KIND-1] && rtattr_strcmp(tca[TCA_KIND-1], q->ops->id))
+ if (tca[TCA_KIND] && nla_strcmp(tca[TCA_KIND], q->ops->id))
return -EINVAL;
err = qdisc_change(q, tca);
if (err == 0)
@@ -827,31 +834,31 @@
tcm->tcm_parent = clid;
tcm->tcm_handle = q->handle;
tcm->tcm_info = atomic_read(&q->refcnt);
- RTA_PUT(skb, TCA_KIND, IFNAMSIZ, q->ops->id);
+ NLA_PUT(skb, TCA_KIND, IFNAMSIZ, q->ops->id);
if (q->ops->dump && q->ops->dump(q, skb) < 0)
- goto rtattr_failure;
+ goto nla_put_failure;
q->qstats.qlen = q->q.qlen;
if (gnet_stats_start_copy_compat(skb, TCA_STATS2, TCA_STATS,
TCA_XSTATS, q->stats_lock, &d) < 0)
- goto rtattr_failure;
+ goto nla_put_failure;
if (q->ops->dump_stats && q->ops->dump_stats(q, &d) < 0)
- goto rtattr_failure;
+ goto nla_put_failure;
if (gnet_stats_copy_basic(&d, &q->bstats) < 0 ||
gnet_stats_copy_rate_est(&d, &q->rate_est) < 0 ||
gnet_stats_copy_queue(&d, &q->qstats) < 0)
- goto rtattr_failure;
+ goto nla_put_failure;
if (gnet_stats_finish_copy(&d) < 0)
- goto rtattr_failure;
+ goto nla_put_failure;
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
return skb->len;
nlmsg_failure:
-rtattr_failure:
+nla_put_failure:
nlmsg_trim(skb, b);
return -1;
}
@@ -939,7 +946,7 @@
{
struct net *net = skb->sk->sk_net;
struct tcmsg *tcm = NLMSG_DATA(n);
- struct rtattr **tca = arg;
+ struct nlattr *tca[TCA_MAX + 1];
struct net_device *dev;
struct Qdisc *q = NULL;
const struct Qdisc_class_ops *cops;
@@ -956,6 +963,10 @@
if ((dev = __dev_get_by_index(&init_net, tcm->tcm_ifindex)) == NULL)
return -ENODEV;
+ err = nlmsg_parse(n, sizeof(*tcm), tca, TCA_MAX, NULL);
+ if (err < 0)
+ return err;
+
/*
parent == TC_H_UNSPEC - unspecified parent.
parent == TC_H_ROOT - class is root, which has no parent.
@@ -1069,25 +1080,25 @@
tcm->tcm_parent = q->handle;
tcm->tcm_handle = q->handle;
tcm->tcm_info = 0;
- RTA_PUT(skb, TCA_KIND, IFNAMSIZ, q->ops->id);
+ NLA_PUT(skb, TCA_KIND, IFNAMSIZ, q->ops->id);
if (cl_ops->dump && cl_ops->dump(q, cl, skb, tcm) < 0)
- goto rtattr_failure;
+ goto nla_put_failure;
if (gnet_stats_start_copy_compat(skb, TCA_STATS2, TCA_STATS,
TCA_XSTATS, q->stats_lock, &d) < 0)
- goto rtattr_failure;
+ goto nla_put_failure;
if (cl_ops->dump_stats && cl_ops->dump_stats(q, cl, &d) < 0)
- goto rtattr_failure;
+ goto nla_put_failure;
if (gnet_stats_finish_copy(&d) < 0)
- goto rtattr_failure;
+ goto nla_put_failure;
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
return skb->len;
nlmsg_failure:
-rtattr_failure:
+nla_put_failure:
nlmsg_trim(skb, b);
return -1;
}