[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/net/sched/act_vlan.c b/src/kernel/linux/v4.19/net/sched/act_vlan.c
new file mode 100644
index 0000000..41528b9
--- /dev/null
+++ b/src/kernel/linux/v4.19/net/sched/act_vlan.c
@@ -0,0 +1,357 @@
+/*
+ * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/skbuff.h>
+#include <linux/rtnetlink.h>
+#include <linux/if_vlan.h>
+#include <net/netlink.h>
+#include <net/pkt_sched.h>
+
+#include <linux/tc_act/tc_vlan.h>
+#include <net/tc_act/tc_vlan.h>
+
+static unsigned int vlan_net_id;
+static struct tc_action_ops act_vlan_ops;
+
+static int tcf_vlan_act(struct sk_buff *skb, const struct tc_action *a,
+ struct tcf_result *res)
+{
+ struct tcf_vlan *v = to_vlan(a);
+ struct tcf_vlan_params *p;
+ int action;
+ int err;
+ u16 tci;
+
+ tcf_lastuse_update(&v->tcf_tm);
+ bstats_cpu_update(this_cpu_ptr(v->common.cpu_bstats), skb);
+
+ /* Ensure 'data' points at mac_header prior calling vlan manipulating
+ * functions.
+ */
+ if (skb_at_tc_ingress(skb))
+ skb_push_rcsum(skb, skb->mac_len);
+
+ action = READ_ONCE(v->tcf_action);
+
+ p = rcu_dereference_bh(v->vlan_p);
+
+ switch (p->tcfv_action) {
+ case TCA_VLAN_ACT_POP:
+ err = skb_vlan_pop(skb);
+ if (err)
+ goto drop;
+ break;
+ case TCA_VLAN_ACT_PUSH:
+ err = skb_vlan_push(skb, p->tcfv_push_proto, p->tcfv_push_vid |
+ (p->tcfv_push_prio << VLAN_PRIO_SHIFT));
+ if (err)
+ goto drop;
+ break;
+ case TCA_VLAN_ACT_MODIFY:
+ /* No-op if no vlan tag (either hw-accel or in-payload) */
+ if (!skb_vlan_tagged(skb))
+ goto out;
+ /* extract existing tag (and guarantee no hw-accel tag) */
+ if (skb_vlan_tag_present(skb)) {
+ tci = skb_vlan_tag_get(skb);
+ skb->vlan_tci = 0;
+ } else {
+ /* in-payload vlan tag, pop it */
+ err = __skb_vlan_pop(skb, &tci);
+ if (err)
+ goto drop;
+ }
+ /* replace the vid */
+ tci = (tci & ~VLAN_VID_MASK) | p->tcfv_push_vid;
+ /* replace prio bits, if tcfv_push_prio specified */
+ if (p->tcfv_push_prio) {
+ tci &= ~VLAN_PRIO_MASK;
+ tci |= p->tcfv_push_prio << VLAN_PRIO_SHIFT;
+ }
+ /* put updated tci as hwaccel tag */
+ __vlan_hwaccel_put_tag(skb, p->tcfv_push_proto, tci);
+ break;
+ default:
+ BUG();
+ }
+
+out:
+ if (skb_at_tc_ingress(skb))
+ skb_pull_rcsum(skb, skb->mac_len);
+
+ return action;
+
+drop:
+ qstats_drop_inc(this_cpu_ptr(v->common.cpu_qstats));
+ return TC_ACT_SHOT;
+}
+
+static const struct nla_policy vlan_policy[TCA_VLAN_MAX + 1] = {
+ [TCA_VLAN_PARMS] = { .len = sizeof(struct tc_vlan) },
+ [TCA_VLAN_PUSH_VLAN_ID] = { .type = NLA_U16 },
+ [TCA_VLAN_PUSH_VLAN_PROTOCOL] = { .type = NLA_U16 },
+ [TCA_VLAN_PUSH_VLAN_PRIORITY] = { .type = NLA_U8 },
+};
+
+static int tcf_vlan_init(struct net *net, struct nlattr *nla,
+ struct nlattr *est, struct tc_action **a,
+ int ovr, int bind, bool rtnl_held,
+ struct netlink_ext_ack *extack)
+{
+ struct tc_action_net *tn = net_generic(net, vlan_net_id);
+ struct nlattr *tb[TCA_VLAN_MAX + 1];
+ struct tcf_vlan_params *p;
+ struct tc_vlan *parm;
+ struct tcf_vlan *v;
+ int action;
+ u16 push_vid = 0;
+ __be16 push_proto = 0;
+ u8 push_prio = 0;
+ bool exists = false;
+ int ret = 0, err;
+ u32 index;
+
+ if (!nla)
+ return -EINVAL;
+
+ err = nla_parse_nested(tb, TCA_VLAN_MAX, nla, vlan_policy, NULL);
+ if (err < 0)
+ return err;
+
+ if (!tb[TCA_VLAN_PARMS])
+ return -EINVAL;
+ parm = nla_data(tb[TCA_VLAN_PARMS]);
+ index = parm->index;
+ err = tcf_idr_check_alloc(tn, &index, a, bind);
+ if (err < 0)
+ return err;
+ exists = err;
+ if (exists && bind)
+ return 0;
+
+ switch (parm->v_action) {
+ case TCA_VLAN_ACT_POP:
+ break;
+ case TCA_VLAN_ACT_PUSH:
+ case TCA_VLAN_ACT_MODIFY:
+ if (!tb[TCA_VLAN_PUSH_VLAN_ID]) {
+ if (exists)
+ tcf_idr_release(*a, bind);
+ else
+ tcf_idr_cleanup(tn, index);
+ return -EINVAL;
+ }
+ push_vid = nla_get_u16(tb[TCA_VLAN_PUSH_VLAN_ID]);
+ if (push_vid >= VLAN_VID_MASK) {
+ if (exists)
+ tcf_idr_release(*a, bind);
+ else
+ tcf_idr_cleanup(tn, index);
+ return -ERANGE;
+ }
+
+ if (tb[TCA_VLAN_PUSH_VLAN_PROTOCOL]) {
+ push_proto = nla_get_be16(tb[TCA_VLAN_PUSH_VLAN_PROTOCOL]);
+ switch (push_proto) {
+ case htons(ETH_P_8021Q):
+ case htons(ETH_P_8021AD):
+ break;
+ default:
+ if (exists)
+ tcf_idr_release(*a, bind);
+ else
+ tcf_idr_cleanup(tn, index);
+ return -EPROTONOSUPPORT;
+ }
+ } else {
+ push_proto = htons(ETH_P_8021Q);
+ }
+
+ if (tb[TCA_VLAN_PUSH_VLAN_PRIORITY])
+ push_prio = nla_get_u8(tb[TCA_VLAN_PUSH_VLAN_PRIORITY]);
+ break;
+ default:
+ if (exists)
+ tcf_idr_release(*a, bind);
+ else
+ tcf_idr_cleanup(tn, index);
+ return -EINVAL;
+ }
+ action = parm->v_action;
+
+ if (!exists) {
+ ret = tcf_idr_create(tn, index, est, a,
+ &act_vlan_ops, bind, true);
+ if (ret) {
+ tcf_idr_cleanup(tn, index);
+ return ret;
+ }
+
+ ret = ACT_P_CREATED;
+ } else if (!ovr) {
+ tcf_idr_release(*a, bind);
+ return -EEXIST;
+ }
+
+ v = to_vlan(*a);
+
+ p = kzalloc(sizeof(*p), GFP_KERNEL);
+ if (!p) {
+ tcf_idr_release(*a, bind);
+ return -ENOMEM;
+ }
+
+ p->tcfv_action = action;
+ p->tcfv_push_vid = push_vid;
+ p->tcfv_push_prio = push_prio;
+ p->tcfv_push_proto = push_proto;
+
+ spin_lock_bh(&v->tcf_lock);
+ v->tcf_action = parm->action;
+ rcu_swap_protected(v->vlan_p, p, lockdep_is_held(&v->tcf_lock));
+ spin_unlock_bh(&v->tcf_lock);
+
+ if (p)
+ kfree_rcu(p, rcu);
+
+ if (ret == ACT_P_CREATED)
+ tcf_idr_insert(tn, *a);
+ return ret;
+}
+
+static void tcf_vlan_cleanup(struct tc_action *a)
+{
+ struct tcf_vlan *v = to_vlan(a);
+ struct tcf_vlan_params *p;
+
+ p = rcu_dereference_protected(v->vlan_p, 1);
+ if (p)
+ kfree_rcu(p, rcu);
+}
+
+static int tcf_vlan_dump(struct sk_buff *skb, struct tc_action *a,
+ int bind, int ref)
+{
+ unsigned char *b = skb_tail_pointer(skb);
+ struct tcf_vlan *v = to_vlan(a);
+ struct tcf_vlan_params *p;
+ struct tc_vlan opt = {
+ .index = v->tcf_index,
+ .refcnt = refcount_read(&v->tcf_refcnt) - ref,
+ .bindcnt = atomic_read(&v->tcf_bindcnt) - bind,
+ };
+ struct tcf_t t;
+
+ spin_lock_bh(&v->tcf_lock);
+ opt.action = v->tcf_action;
+ p = rcu_dereference_protected(v->vlan_p, lockdep_is_held(&v->tcf_lock));
+ opt.v_action = p->tcfv_action;
+ if (nla_put(skb, TCA_VLAN_PARMS, sizeof(opt), &opt))
+ goto nla_put_failure;
+
+ if ((p->tcfv_action == TCA_VLAN_ACT_PUSH ||
+ p->tcfv_action == TCA_VLAN_ACT_MODIFY) &&
+ (nla_put_u16(skb, TCA_VLAN_PUSH_VLAN_ID, p->tcfv_push_vid) ||
+ nla_put_be16(skb, TCA_VLAN_PUSH_VLAN_PROTOCOL,
+ p->tcfv_push_proto) ||
+ (nla_put_u8(skb, TCA_VLAN_PUSH_VLAN_PRIORITY,
+ p->tcfv_push_prio))))
+ goto nla_put_failure;
+
+ tcf_tm_dump(&t, &v->tcf_tm);
+ if (nla_put_64bit(skb, TCA_VLAN_TM, sizeof(t), &t, TCA_VLAN_PAD))
+ goto nla_put_failure;
+ spin_unlock_bh(&v->tcf_lock);
+
+ return skb->len;
+
+nla_put_failure:
+ spin_unlock_bh(&v->tcf_lock);
+ nlmsg_trim(skb, b);
+ return -1;
+}
+
+static int tcf_vlan_walker(struct net *net, struct sk_buff *skb,
+ struct netlink_callback *cb, int type,
+ const struct tc_action_ops *ops,
+ struct netlink_ext_ack *extack)
+{
+ struct tc_action_net *tn = net_generic(net, vlan_net_id);
+
+ return tcf_generic_walker(tn, skb, cb, type, ops, extack);
+}
+
+static int tcf_vlan_search(struct net *net, struct tc_action **a, u32 index,
+ struct netlink_ext_ack *extack)
+{
+ struct tc_action_net *tn = net_generic(net, vlan_net_id);
+
+ return tcf_idr_search(tn, a, index);
+}
+
+static size_t tcf_vlan_get_fill_size(const struct tc_action *act)
+{
+ return nla_total_size(sizeof(struct tc_vlan))
+ + nla_total_size(sizeof(u16)) /* TCA_VLAN_PUSH_VLAN_ID */
+ + nla_total_size(sizeof(u16)) /* TCA_VLAN_PUSH_VLAN_PROTOCOL */
+ + nla_total_size(sizeof(u8)); /* TCA_VLAN_PUSH_VLAN_PRIORITY */
+}
+
+static struct tc_action_ops act_vlan_ops = {
+ .kind = "vlan",
+ .type = TCA_ACT_VLAN,
+ .owner = THIS_MODULE,
+ .act = tcf_vlan_act,
+ .dump = tcf_vlan_dump,
+ .init = tcf_vlan_init,
+ .cleanup = tcf_vlan_cleanup,
+ .walk = tcf_vlan_walker,
+ .get_fill_size = tcf_vlan_get_fill_size,
+ .lookup = tcf_vlan_search,
+ .size = sizeof(struct tcf_vlan),
+};
+
+static __net_init int vlan_init_net(struct net *net)
+{
+ struct tc_action_net *tn = net_generic(net, vlan_net_id);
+
+ return tc_action_net_init(net, tn, &act_vlan_ops);
+}
+
+static void __net_exit vlan_exit_net(struct list_head *net_list)
+{
+ tc_action_net_exit(net_list, vlan_net_id);
+}
+
+static struct pernet_operations vlan_net_ops = {
+ .init = vlan_init_net,
+ .exit_batch = vlan_exit_net,
+ .id = &vlan_net_id,
+ .size = sizeof(struct tc_action_net),
+};
+
+static int __init vlan_init_module(void)
+{
+ return tcf_register_action(&act_vlan_ops, &vlan_net_ops);
+}
+
+static void __exit vlan_cleanup_module(void)
+{
+ tcf_unregister_action(&act_vlan_ops, &vlan_net_ops);
+}
+
+module_init(vlan_init_module);
+module_exit(vlan_cleanup_module);
+
+MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
+MODULE_DESCRIPTION("vlan manipulation actions");
+MODULE_LICENSE("GPL v2");