diff options
Diffstat (limited to 'include/net/dst_metadata.h')
| -rw-r--r-- | include/net/dst_metadata.h | 81 |
1 files changed, 72 insertions, 9 deletions
diff --git a/include/net/dst_metadata.h b/include/net/dst_metadata.h index 56cb3c38569a..1fc2fb03ce3f 100644 --- a/include/net/dst_metadata.h +++ b/include/net/dst_metadata.h @@ -3,12 +3,16 @@ #define __NET_DST_METADATA_H 1 #include <linux/skbuff.h> +#include <net/ip.h> #include <net/ip_tunnels.h> +#include <net/macsec.h> #include <net/dst.h> enum metadata_type { METADATA_IP_TUNNEL, METADATA_HW_PORT_MUX, + METADATA_MACSEC, + METADATA_XFRM, }; struct hw_port_info { @@ -16,12 +20,24 @@ struct hw_port_info { u32 port_id; }; +struct macsec_info { + sci_t sci; +}; + +struct xfrm_md_info { + u32 if_id; + int link; + struct dst_entry *dst_orig; +}; + struct metadata_dst { struct dst_entry dst; enum metadata_type type; union { struct ip_tunnel_info tun_info; struct hw_port_info port_info; + struct macsec_info macsec_info; + struct xfrm_md_info xfrm_info; } u; }; @@ -45,12 +61,35 @@ skb_tunnel_info(const struct sk_buff *skb) return &md_dst->u.tun_info; dst = skb_dst(skb); - if (dst && dst->lwtstate) + if (dst && dst->lwtstate && + (dst->lwtstate->type == LWTUNNEL_ENCAP_IP || + dst->lwtstate->type == LWTUNNEL_ENCAP_IP6)) return lwt_tun_info(dst->lwtstate); return NULL; } +static inline struct xfrm_md_info *lwt_xfrm_info(struct lwtunnel_state *lwt) +{ + return (struct xfrm_md_info *)lwt->data; +} + +static inline struct xfrm_md_info *skb_xfrm_md_info(const struct sk_buff *skb) +{ + struct metadata_dst *md_dst = skb_metadata_dst(skb); + struct dst_entry *dst; + + if (md_dst && md_dst->type == METADATA_XFRM) + return &md_dst->u.xfrm_info; + + dst = skb_dst(skb); + if (dst && dst->lwtstate && + dst->lwtstate->type == LWTUNNEL_ENCAP_XFRM) + return lwt_xfrm_info(dst->lwtstate); + + return NULL; +} + static inline bool skb_valid_dst(const struct sk_buff *skb) { struct dst_entry *dst = skb_dst(skb); @@ -80,6 +119,12 @@ static inline int skb_metadata_dst_cmp(const struct sk_buff *skb_a, return memcmp(&a->u.tun_info, &b->u.tun_info, sizeof(a->u.tun_info) + a->u.tun_info.options_len); + case METADATA_MACSEC: + return memcmp(&a->u.macsec_info, &b->u.macsec_info, + sizeof(a->u.macsec_info)); + case METADATA_XFRM: + return memcmp(&a->u.xfrm_info, &b->u.xfrm_info, + sizeof(a->u.xfrm_info)); default: return 1; } @@ -121,8 +166,20 @@ static inline struct metadata_dst *tun_dst_unclone(struct sk_buff *skb) memcpy(&new_md->u.tun_info, &md_dst->u.tun_info, sizeof(struct ip_tunnel_info) + md_size); +#ifdef CONFIG_DST_CACHE + /* Unclone the dst cache if there is one */ + if (new_md->u.tun_info.dst_cache.cache) { + int ret; + + ret = dst_cache_init(&new_md->u.tun_info.dst_cache, GFP_ATOMIC); + if (ret) { + metadata_dst_free(new_md); + return ERR_PTR(ret); + } + } +#endif + skb_dst_drop(skb); - dst_hold(&new_md->dst); skb_dst_set(skb, &new_md->dst); return new_md; } @@ -142,7 +199,7 @@ static inline struct metadata_dst *__ip_tun_set_dst(__be32 saddr, __be32 daddr, __u8 tos, __u8 ttl, __be16 tp_dst, - __be16 flags, + const unsigned long *flags, __be64 tunnel_id, int md_size) { @@ -159,14 +216,20 @@ static inline struct metadata_dst *__ip_tun_set_dst(__be32 saddr, } static inline struct metadata_dst *ip_tun_rx_dst(struct sk_buff *skb, - __be16 flags, + const unsigned long *flags, __be64 tunnel_id, int md_size) { const struct iphdr *iph = ip_hdr(skb); + struct metadata_dst *tun_dst; - return __ip_tun_set_dst(iph->saddr, iph->daddr, iph->tos, iph->ttl, - 0, flags, tunnel_id, md_size); + tun_dst = __ip_tun_set_dst(iph->saddr, iph->daddr, iph->tos, iph->ttl, + 0, flags, tunnel_id, md_size); + + if (tun_dst && (iph->frag_off & htons(IP_DF))) + __set_bit(IP_TUNNEL_DONT_FRAGMENT_BIT, + tun_dst->u.tun_info.key.tun_flags); + return tun_dst; } static inline struct metadata_dst *__ipv6_tun_set_dst(const struct in6_addr *saddr, @@ -174,7 +237,7 @@ static inline struct metadata_dst *__ipv6_tun_set_dst(const struct in6_addr *sad __u8 tos, __u8 ttl, __be16 tp_dst, __be32 label, - __be16 flags, + const unsigned long *flags, __be64 tunnel_id, int md_size) { @@ -187,7 +250,7 @@ static inline struct metadata_dst *__ipv6_tun_set_dst(const struct in6_addr *sad info = &tun_dst->u.tun_info; info->mode = IP_TUNNEL_INFO_IPV6; - info->key.tun_flags = flags; + ip_tunnel_flags_copy(info->key.tun_flags, flags); info->key.tun_id = tunnel_id; info->key.tp_src = 0; info->key.tp_dst = tp_dst; @@ -203,7 +266,7 @@ static inline struct metadata_dst *__ipv6_tun_set_dst(const struct in6_addr *sad } static inline struct metadata_dst *ipv6_tun_rx_dst(struct sk_buff *skb, - __be16 flags, + const unsigned long *flags, __be64 tunnel_id, int md_size) { |