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Diffstat (limited to 'net/sched/cls_bpf.c')
-rw-r--r--net/sched/cls_bpf.c99
1 files changed, 42 insertions, 57 deletions
diff --git a/net/sched/cls_bpf.c b/net/sched/cls_bpf.c
index f57bd531ba98..520c5027646a 100644
--- a/net/sched/cls_bpf.c
+++ b/net/sched/cls_bpf.c
@@ -147,24 +147,18 @@ static int cls_bpf_offload_cmd(struct tcf_proto *tp, struct cls_bpf_prog *prog,
enum tc_clsbpf_command cmd)
{
struct net_device *dev = tp->q->dev_queue->dev;
- struct tc_cls_bpf_offload bpf_offload = {};
- struct tc_to_netdev offload;
+ struct tc_cls_bpf_offload cls_bpf = {};
int err;
- offload.type = TC_SETUP_CLSBPF;
- offload.cls_bpf = &bpf_offload;
-
- bpf_offload.command = cmd;
- bpf_offload.exts = &prog->exts;
- bpf_offload.prog = prog->filter;
- bpf_offload.name = prog->bpf_name;
- bpf_offload.exts_integrated = prog->exts_integrated;
- bpf_offload.gen_flags = prog->gen_flags;
-
- err = dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle,
- tp->chain->index,
- tp->protocol, &offload);
+ tc_cls_common_offload_init(&cls_bpf.common, tp);
+ cls_bpf.command = cmd;
+ cls_bpf.exts = &prog->exts;
+ cls_bpf.prog = prog->filter;
+ cls_bpf.name = prog->bpf_name;
+ cls_bpf.exts_integrated = prog->exts_integrated;
+ cls_bpf.gen_flags = prog->gen_flags;
+ err = dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_CLSBPF, &cls_bpf);
if (!err && (cmd == TC_CLSBPF_ADD || cmd == TC_CLSBPF_REPLACE))
prog->gen_flags |= TCA_CLS_FLAGS_IN_HW;
@@ -184,7 +178,7 @@ static int cls_bpf_offload(struct tcf_proto *tp, struct cls_bpf_prog *prog,
(oldprog && tc_skip_sw(oldprog->gen_flags));
if (oldprog && oldprog->offloaded) {
- if (tc_should_offload(dev, tp, prog->gen_flags)) {
+ if (tc_should_offload(dev, prog->gen_flags)) {
cmd = TC_CLSBPF_REPLACE;
} else if (!tc_skip_sw(prog->gen_flags)) {
obj = oldprog;
@@ -193,7 +187,7 @@ static int cls_bpf_offload(struct tcf_proto *tp, struct cls_bpf_prog *prog,
return -EINVAL;
}
} else {
- if (!tc_should_offload(dev, tp, prog->gen_flags))
+ if (!tc_should_offload(dev, prog->gen_flags))
return skip_sw ? -EINVAL : 0;
cmd = TC_CLSBPF_ADD;
}
@@ -276,11 +270,11 @@ static void __cls_bpf_delete(struct tcf_proto *tp, struct cls_bpf_prog *prog)
call_rcu(&prog->rcu, cls_bpf_delete_prog_rcu);
}
-static int cls_bpf_delete(struct tcf_proto *tp, unsigned long arg, bool *last)
+static int cls_bpf_delete(struct tcf_proto *tp, void *arg, bool *last)
{
struct cls_bpf_head *head = rtnl_dereference(tp->root);
- __cls_bpf_delete(tp, (struct cls_bpf_prog *) arg);
+ __cls_bpf_delete(tp, arg);
*last = list_empty(&head->plist);
return 0;
}
@@ -296,20 +290,17 @@ static void cls_bpf_destroy(struct tcf_proto *tp)
kfree_rcu(head, rcu);
}
-static unsigned long cls_bpf_get(struct tcf_proto *tp, u32 handle)
+static void *cls_bpf_get(struct tcf_proto *tp, u32 handle)
{
struct cls_bpf_head *head = rtnl_dereference(tp->root);
struct cls_bpf_prog *prog;
- unsigned long ret = 0UL;
list_for_each_entry(prog, &head->plist, link) {
- if (prog->handle == handle) {
- ret = (unsigned long) prog;
- break;
- }
+ if (prog->handle == handle)
+ return prog;
}
- return ret;
+ return NULL;
}
static int cls_bpf_prog_from_ops(struct nlattr **tb, struct cls_bpf_prog *prog)
@@ -382,13 +373,11 @@ static int cls_bpf_prog_from_efd(struct nlattr **tb, struct cls_bpf_prog *prog,
return 0;
}
-static int cls_bpf_modify_existing(struct net *net, struct tcf_proto *tp,
- struct cls_bpf_prog *prog,
- unsigned long base, struct nlattr **tb,
- struct nlattr *est, bool ovr)
+static int cls_bpf_set_parms(struct net *net, struct tcf_proto *tp,
+ struct cls_bpf_prog *prog, unsigned long base,
+ struct nlattr **tb, struct nlattr *est, bool ovr)
{
bool is_bpf, is_ebpf, have_exts = false;
- struct tcf_exts exts;
u32 gen_flags = 0;
int ret;
@@ -397,30 +386,23 @@ static int cls_bpf_modify_existing(struct net *net, struct tcf_proto *tp,
if ((!is_bpf && !is_ebpf) || (is_bpf && is_ebpf))
return -EINVAL;
- ret = tcf_exts_init(&exts, TCA_BPF_ACT, TCA_BPF_POLICE);
+ ret = tcf_exts_validate(net, tp, tb, est, &prog->exts, ovr);
if (ret < 0)
return ret;
- ret = tcf_exts_validate(net, tp, tb, est, &exts, ovr);
- if (ret < 0)
- goto errout;
if (tb[TCA_BPF_FLAGS]) {
u32 bpf_flags = nla_get_u32(tb[TCA_BPF_FLAGS]);
- if (bpf_flags & ~TCA_BPF_FLAG_ACT_DIRECT) {
- ret = -EINVAL;
- goto errout;
- }
+ if (bpf_flags & ~TCA_BPF_FLAG_ACT_DIRECT)
+ return -EINVAL;
have_exts = bpf_flags & TCA_BPF_FLAG_ACT_DIRECT;
}
if (tb[TCA_BPF_FLAGS_GEN]) {
gen_flags = nla_get_u32(tb[TCA_BPF_FLAGS_GEN]);
if (gen_flags & ~CLS_BPF_SUPPORTED_GEN_FLAGS ||
- !tc_flags_valid(gen_flags)) {
- ret = -EINVAL;
- goto errout;
- }
+ !tc_flags_valid(gen_flags))
+ return -EINVAL;
}
prog->exts_integrated = have_exts;
@@ -429,19 +411,14 @@ static int cls_bpf_modify_existing(struct net *net, struct tcf_proto *tp,
ret = is_bpf ? cls_bpf_prog_from_ops(tb, prog) :
cls_bpf_prog_from_efd(tb, prog, tp);
if (ret < 0)
- goto errout;
+ return ret;
if (tb[TCA_BPF_CLASSID]) {
prog->res.classid = nla_get_u32(tb[TCA_BPF_CLASSID]);
tcf_bind_filter(tp, &prog->res, base);
}
- tcf_exts_change(tp, &prog->exts, &exts);
return 0;
-
-errout:
- tcf_exts_destroy(&exts);
- return ret;
}
static u32 cls_bpf_grab_new_handle(struct tcf_proto *tp,
@@ -468,10 +445,10 @@ static u32 cls_bpf_grab_new_handle(struct tcf_proto *tp,
static int cls_bpf_change(struct net *net, struct sk_buff *in_skb,
struct tcf_proto *tp, unsigned long base,
u32 handle, struct nlattr **tca,
- unsigned long *arg, bool ovr)
+ void **arg, bool ovr)
{
struct cls_bpf_head *head = rtnl_dereference(tp->root);
- struct cls_bpf_prog *oldprog = (struct cls_bpf_prog *) *arg;
+ struct cls_bpf_prog *oldprog = *arg;
struct nlattr *tb[TCA_BPF_MAX + 1];
struct cls_bpf_prog *prog;
int ret;
@@ -508,8 +485,7 @@ static int cls_bpf_change(struct net *net, struct sk_buff *in_skb,
goto errout;
}
- ret = cls_bpf_modify_existing(net, tp, prog, base, tb, tca[TCA_RATE],
- ovr);
+ ret = cls_bpf_set_parms(net, tp, prog, base, tb, tca[TCA_RATE], ovr);
if (ret < 0)
goto errout;
@@ -530,7 +506,7 @@ static int cls_bpf_change(struct net *net, struct sk_buff *in_skb,
list_add_rcu(&prog->link, &head->plist);
}
- *arg = (unsigned long) prog;
+ *arg = prog;
return 0;
errout:
@@ -578,10 +554,10 @@ static int cls_bpf_dump_ebpf_info(const struct cls_bpf_prog *prog,
return 0;
}
-static int cls_bpf_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
+static int cls_bpf_dump(struct net *net, struct tcf_proto *tp, void *fh,
struct sk_buff *skb, struct tcmsg *tm)
{
- struct cls_bpf_prog *prog = (struct cls_bpf_prog *) fh;
+ struct cls_bpf_prog *prog = fh;
struct nlattr *nest;
u32 bpf_flags = 0;
int ret;
@@ -631,6 +607,14 @@ nla_put_failure:
return -1;
}
+static void cls_bpf_bind_class(void *fh, u32 classid, unsigned long cl)
+{
+ struct cls_bpf_prog *prog = fh;
+
+ if (prog && prog->res.classid == classid)
+ prog->res.class = cl;
+}
+
static void cls_bpf_walk(struct tcf_proto *tp, struct tcf_walker *arg)
{
struct cls_bpf_head *head = rtnl_dereference(tp->root);
@@ -639,7 +623,7 @@ static void cls_bpf_walk(struct tcf_proto *tp, struct tcf_walker *arg)
list_for_each_entry(prog, &head->plist, link) {
if (arg->count < arg->skip)
goto skip;
- if (arg->fn(tp, (unsigned long) prog, arg) < 0) {
+ if (arg->fn(tp, prog, arg) < 0) {
arg->stop = 1;
break;
}
@@ -659,6 +643,7 @@ static struct tcf_proto_ops cls_bpf_ops __read_mostly = {
.delete = cls_bpf_delete,
.walk = cls_bpf_walk,
.dump = cls_bpf_dump,
+ .bind_class = cls_bpf_bind_class,
};
static int __init cls_bpf_init_mod(void)