[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/include/net/dst_metadata.h b/src/kernel/linux/v4.14/include/net/dst_metadata.h
new file mode 100644
index 0000000..91bc7bd
--- /dev/null
+++ b/src/kernel/linux/v4.14/include/net/dst_metadata.h
@@ -0,0 +1,215 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NET_DST_METADATA_H
+#define __NET_DST_METADATA_H 1
+
+#include <linux/skbuff.h>
+#include <net/ip_tunnels.h>
+#include <net/dst.h>
+
+enum metadata_type {
+ METADATA_IP_TUNNEL,
+ METADATA_HW_PORT_MUX,
+};
+
+struct hw_port_info {
+ struct net_device *lower_dev;
+ u32 port_id;
+};
+
+struct metadata_dst {
+ struct dst_entry dst;
+ enum metadata_type type;
+ union {
+ struct ip_tunnel_info tun_info;
+ struct hw_port_info port_info;
+ } u;
+};
+
+static inline struct metadata_dst *skb_metadata_dst(struct sk_buff *skb)
+{
+ struct metadata_dst *md_dst = (struct metadata_dst *) skb_dst(skb);
+
+ if (md_dst && md_dst->dst.flags & DST_METADATA)
+ return md_dst;
+
+ return NULL;
+}
+
+static inline struct ip_tunnel_info *skb_tunnel_info(struct sk_buff *skb)
+{
+ struct metadata_dst *md_dst = skb_metadata_dst(skb);
+ struct dst_entry *dst;
+
+ if (md_dst && md_dst->type == METADATA_IP_TUNNEL)
+ return &md_dst->u.tun_info;
+
+ dst = skb_dst(skb);
+ if (dst && dst->lwtstate)
+ return lwt_tun_info(dst->lwtstate);
+
+ return NULL;
+}
+
+static inline bool skb_valid_dst(const struct sk_buff *skb)
+{
+ struct dst_entry *dst = skb_dst(skb);
+
+ return dst && !(dst->flags & DST_METADATA);
+}
+
+static inline int skb_metadata_dst_cmp(const struct sk_buff *skb_a,
+ const struct sk_buff *skb_b)
+{
+ const struct metadata_dst *a, *b;
+
+ if (!(skb_a->_skb_refdst | skb_b->_skb_refdst))
+ return 0;
+
+ a = (const struct metadata_dst *) skb_dst(skb_a);
+ b = (const struct metadata_dst *) skb_dst(skb_b);
+
+ if (!a != !b || a->type != b->type)
+ return 1;
+
+ switch (a->type) {
+ case METADATA_HW_PORT_MUX:
+ return memcmp(&a->u.port_info, &b->u.port_info,
+ sizeof(a->u.port_info));
+ case METADATA_IP_TUNNEL:
+ return memcmp(&a->u.tun_info, &b->u.tun_info,
+ sizeof(a->u.tun_info) +
+ a->u.tun_info.options_len);
+ default:
+ return 1;
+ }
+}
+
+void metadata_dst_free(struct metadata_dst *);
+struct metadata_dst *metadata_dst_alloc(u8 optslen, enum metadata_type type,
+ gfp_t flags);
+struct metadata_dst __percpu *
+metadata_dst_alloc_percpu(u8 optslen, enum metadata_type type, gfp_t flags);
+
+static inline struct metadata_dst *tun_rx_dst(int md_size)
+{
+ struct metadata_dst *tun_dst;
+
+ tun_dst = metadata_dst_alloc(md_size, METADATA_IP_TUNNEL, GFP_ATOMIC);
+ if (!tun_dst)
+ return NULL;
+
+ tun_dst->u.tun_info.options_len = 0;
+ tun_dst->u.tun_info.mode = 0;
+ return tun_dst;
+}
+
+static inline struct metadata_dst *tun_dst_unclone(struct sk_buff *skb)
+{
+ struct metadata_dst *md_dst = skb_metadata_dst(skb);
+ int md_size;
+ struct metadata_dst *new_md;
+
+ if (!md_dst || md_dst->type != METADATA_IP_TUNNEL)
+ return ERR_PTR(-EINVAL);
+
+ md_size = md_dst->u.tun_info.options_len;
+ new_md = metadata_dst_alloc(md_size, METADATA_IP_TUNNEL, GFP_ATOMIC);
+ if (!new_md)
+ return ERR_PTR(-ENOMEM);
+
+ memcpy(&new_md->u.tun_info, &md_dst->u.tun_info,
+ sizeof(struct ip_tunnel_info) + md_size);
+ skb_dst_drop(skb);
+ dst_hold(&new_md->dst);
+ skb_dst_set(skb, &new_md->dst);
+ return new_md;
+}
+
+static inline struct ip_tunnel_info *skb_tunnel_info_unclone(struct sk_buff *skb)
+{
+ struct metadata_dst *dst;
+
+ dst = tun_dst_unclone(skb);
+ if (IS_ERR(dst))
+ return NULL;
+
+ return &dst->u.tun_info;
+}
+
+static inline struct metadata_dst *__ip_tun_set_dst(__be32 saddr,
+ __be32 daddr,
+ __u8 tos, __u8 ttl,
+ __be16 tp_dst,
+ __be16 flags,
+ __be64 tunnel_id,
+ int md_size)
+{
+ struct metadata_dst *tun_dst;
+
+ tun_dst = tun_rx_dst(md_size);
+ if (!tun_dst)
+ return NULL;
+
+ ip_tunnel_key_init(&tun_dst->u.tun_info.key,
+ saddr, daddr, tos, ttl,
+ 0, 0, tp_dst, tunnel_id, flags);
+ return tun_dst;
+}
+
+static inline struct metadata_dst *ip_tun_rx_dst(struct sk_buff *skb,
+ __be16 flags,
+ __be64 tunnel_id,
+ int md_size)
+{
+ const struct iphdr *iph = ip_hdr(skb);
+
+ return __ip_tun_set_dst(iph->saddr, iph->daddr, iph->tos, iph->ttl,
+ 0, flags, tunnel_id, md_size);
+}
+
+static inline struct metadata_dst *__ipv6_tun_set_dst(const struct in6_addr *saddr,
+ const struct in6_addr *daddr,
+ __u8 tos, __u8 ttl,
+ __be16 tp_dst,
+ __be32 label,
+ __be16 flags,
+ __be64 tunnel_id,
+ int md_size)
+{
+ struct metadata_dst *tun_dst;
+ struct ip_tunnel_info *info;
+
+ tun_dst = tun_rx_dst(md_size);
+ if (!tun_dst)
+ return NULL;
+
+ info = &tun_dst->u.tun_info;
+ info->mode = IP_TUNNEL_INFO_IPV6;
+ info->key.tun_flags = flags;
+ info->key.tun_id = tunnel_id;
+ info->key.tp_src = 0;
+ info->key.tp_dst = tp_dst;
+
+ info->key.u.ipv6.src = *saddr;
+ info->key.u.ipv6.dst = *daddr;
+
+ info->key.tos = tos;
+ info->key.ttl = ttl;
+ info->key.label = label;
+
+ return tun_dst;
+}
+
+static inline struct metadata_dst *ipv6_tun_rx_dst(struct sk_buff *skb,
+ __be16 flags,
+ __be64 tunnel_id,
+ int md_size)
+{
+ const struct ipv6hdr *ip6h = ipv6_hdr(skb);
+
+ return __ipv6_tun_set_dst(&ip6h->saddr, &ip6h->daddr,
+ ipv6_get_dsfield(ip6h), ip6h->hop_limit,
+ 0, ip6_flowlabel(ip6h), flags, tunnel_id,
+ md_size);
+}
+#endif /* __NET_DST_METADATA_H */