diff options
Diffstat (limited to 'include/net/ipv6.h')
| -rw-r--r-- | include/net/ipv6.h | 43 |
1 files changed, 34 insertions, 9 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h index eec8ad3c9843..82dbdb092a5d 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -19,7 +19,7 @@ #include <net/if_inet6.h> #include <net/ndisc.h> #include <net/flow.h> -#include <net/flow_keys.h> +#include <net/flow_dissector.h> #include <net/snmp.h> #define SIN6_LEN_RFC2133 24 @@ -239,8 +239,10 @@ struct ip6_flowlabel { struct net *fl_net; }; -#define IPV6_FLOWINFO_MASK cpu_to_be32(0x0FFFFFFF) -#define IPV6_FLOWLABEL_MASK cpu_to_be32(0x000FFFFF) +#define IPV6_FLOWINFO_MASK cpu_to_be32(0x0FFFFFFF) +#define IPV6_FLOWLABEL_MASK cpu_to_be32(0x000FFFFF) +#define IPV6_FLOWLABEL_STATELESS_FLAG cpu_to_be32(0x00080000) + #define IPV6_TCLASS_MASK (IPV6_FLOWINFO_MASK & ~IPV6_FLOWLABEL_MASK) #define IPV6_TCLASS_SHIFT 20 @@ -669,8 +671,9 @@ static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_add return __ipv6_addr_diff(a1, a2, sizeof(struct in6_addr)); } -void ipv6_select_ident(struct net *net, struct frag_hdr *fhdr, - struct rt6_info *rt); +__be32 ipv6_select_ident(struct net *net, + const struct in6_addr *daddr, + const struct in6_addr *saddr); void ipv6_proxy_select_ident(struct net *net, struct sk_buff *skb); int ip6_dst_hoplimit(struct dst_entry *dst); @@ -689,6 +692,20 @@ static inline int ip6_sk_dst_hoplimit(struct ipv6_pinfo *np, struct flowi6 *fl6, return hlimit; } +/* copy IPv6 saddr & daddr to flow_keys, possibly using 64bit load/store + * Equivalent to : flow->v6addrs.src = iph->saddr; + * flow->v6addrs.dst = iph->daddr; + */ +static inline void iph_to_flow_copy_v6addrs(struct flow_keys *flow, + const struct ipv6hdr *iph) +{ + BUILD_BUG_ON(offsetof(typeof(flow->addrs), v6addrs.dst) != + offsetof(typeof(flow->addrs), v6addrs.src) + + sizeof(flow->addrs.v6addrs.src)); + memcpy(&flow->addrs.v6addrs, &iph->saddr, sizeof(flow->addrs.v6addrs)); + flow->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS; +} + #if IS_ENABLED(CONFIG_IPV6) static inline void ip6_set_txhash(struct sock *sk) { @@ -696,10 +713,15 @@ static inline void ip6_set_txhash(struct sock *sk) struct ipv6_pinfo *np = inet6_sk(sk); struct flow_keys keys; - keys.src = (__force __be32)ipv6_addr_hash(&np->saddr); - keys.dst = (__force __be32)ipv6_addr_hash(&sk->sk_v6_daddr); - keys.port16[0] = inet->inet_sport; - keys.port16[1] = inet->inet_dport; + memset(&keys, 0, sizeof(keys)); + + memcpy(&keys.addrs.v6addrs.src, &np->saddr, + sizeof(keys.addrs.v6addrs.src)); + memcpy(&keys.addrs.v6addrs.dst, &sk->sk_v6_daddr, + sizeof(keys.addrs.v6addrs.dst)); + keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS; + keys.ports.src = inet->inet_sport; + keys.ports.dst = inet->inet_dport; sk->sk_txhash = flow_hash_from_keys(&keys); } @@ -719,6 +741,9 @@ static inline __be32 ip6_make_flowlabel(struct net *net, struct sk_buff *skb, hash ^= hash >> 12; flowlabel = (__force __be32)hash & IPV6_FLOWLABEL_MASK; + + if (net->ipv6.sysctl.flowlabel_state_ranges) + flowlabel |= IPV6_FLOWLABEL_STATELESS_FLAG; } return flowlabel; |