diff --git a/include/net/ip.h b/include/net/ip.h index 0e795df05ec983d07d7acc52cddabd728ea6e0b1..2e8f055989c3c982df11c0160ae409e98814bcab 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -31,6 +31,7 @@ #include #include #include +#include struct sock; @@ -353,6 +354,19 @@ static inline __wsum inet_compute_pseudo(struct sk_buff *skb, int proto) skb->len, proto, 0); } +static inline void inet_set_txhash(struct sock *sk) +{ + struct inet_sock *inet = inet_sk(sk); + struct flow_keys keys; + + keys.src = inet->inet_saddr; + keys.dst = inet->inet_daddr; + keys.port16[0] = inet->inet_sport; + keys.port16[1] = inet->inet_dport; + + sk->sk_txhash = flow_hash_from_keys(&keys); +} + /* * Map a multicast IP onto multicast MAC for type ethernet. */ diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 574337fe72ddbd3038c061dab5aef142ea0f068b..2aa86e1135a1cc7e20370c680545ef2205263831 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -19,6 +19,7 @@ #include #include #include +#include #include #define SIN6_LEN_RFC2133 24 @@ -684,6 +685,20 @@ static inline int ip6_sk_dst_hoplimit(struct ipv6_pinfo *np, struct flowi6 *fl6, return hlimit; } +static inline void ip6_set_txhash(struct sock *sk) +{ + struct inet_sock *inet = inet_sk(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; + + sk->sk_txhash = flow_hash_from_keys(&keys); +} + /* * Header manipulation */ diff --git a/include/net/sock.h b/include/net/sock.h index 8d4c9473e7d721f35bb063f37318af567cb76e59..cb84b2f1ad8f16b58afe75bb0f4c469e08b36235 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -273,6 +273,7 @@ struct cg_proto; * @sk_rcvtimeo: %SO_RCVTIMEO setting * @sk_sndtimeo: %SO_SNDTIMEO setting * @sk_rxhash: flow hash received from netif layer + * @sk_txhash: computed flow hash for use on transmit * @sk_filter: socket filtering instructions * @sk_protinfo: private area, net family specific, when not using slab * @sk_timer: sock cleanup timer @@ -347,6 +348,7 @@ struct sock { #ifdef CONFIG_RPS __u32 sk_rxhash; #endif + __u32 sk_txhash; #ifdef CONFIG_NET_RX_BUSY_POLL unsigned int sk_napi_id; unsigned int sk_ll_usec; @@ -1980,6 +1982,14 @@ static inline void sock_poll_wait(struct file *filp, } } +static inline void skb_set_hash_from_sk(struct sk_buff *skb, struct sock *sk) +{ + if (sk->sk_txhash) { + skb->l4_hash = 1; + skb->hash = sk->sk_txhash; + } +} + /* * Queue a received datagram if it will fit. Stream and sequenced * protocols can't normally use this as they need to fit buffers in @@ -1994,6 +2004,7 @@ static inline void skb_set_owner_w(struct sk_buff *skb, struct sock *sk) skb_orphan(skb); skb->sk = sk; skb->destructor = sock_wfree; + skb_set_hash_from_sk(skb, sk); /* * We used to take a refcount on sk, but following operation * is enough to guarantee sk_free() wont free this sock until diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c index a3095fdefbed98ed4e320ac6c44ea3e18241d1a4..90c0e8386116177f4bbf412f2175aec93c64870c 100644 --- a/net/ipv4/datagram.c +++ b/net/ipv4/datagram.c @@ -76,6 +76,7 @@ int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) inet->inet_daddr = fl4->daddr; inet->inet_dport = usin->sin_port; sk->sk_state = TCP_ESTABLISHED; + inet_set_txhash(sk); inet->inet_id = jiffies; sk_dst_set(sk, &rt->dst); diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 52d0f6a1ec2c9b1b87310037c817f94a98238c82..1edc739b9da59e29decbc304e9c5dd037634bf09 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -208,6 +208,8 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) inet->inet_dport = usin->sin_port; inet->inet_daddr = daddr; + inet_set_txhash(sk); + inet_csk(sk)->icsk_ext_hdr_len = 0; if (inet_opt) inet_csk(sk)->icsk_ext_hdr_len = inet_opt->opt.optlen; @@ -1334,6 +1336,7 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb, newinet->mc_ttl = ip_hdr(skb)->ttl; newinet->rcv_tos = ip_hdr(skb)->tos; inet_csk(newsk)->icsk_ext_hdr_len = 0; + inet_set_txhash(newsk); if (inet_opt) inet_csk(newsk)->icsk_ext_hdr_len = inet_opt->opt.optlen; newinet->inet_id = newtp->write_seq ^ jiffies; diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index f8f2a944a1ce091f216d7ca7968667419fe6ed0a..bcee13c4627cc29deb17695454c0413d2b0b87ff 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -916,6 +916,7 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it, skb_orphan(skb); skb->sk = sk; skb->destructor = tcp_wfree; + skb_set_hash_from_sk(skb, sk); atomic_add(skb->truesize, &sk->sk_wmem_alloc); /* Build TCP header and checksum it. */ diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c index c3bf2d2e519ea3ec86c07c43dffaff85fad80b5e..2753319524f1acabb34a0520ea29ee361c1dfe9e 100644 --- a/net/ipv6/datagram.c +++ b/net/ipv6/datagram.c @@ -199,6 +199,7 @@ ipv4_connected: NULL); sk->sk_state = TCP_ESTABLISHED; + ip6_set_txhash(sk); out: fl6_sock_release(flowlabel); return err; diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index a97c95585da8debd5960c4e8b15b9c923329513c..22055b098428df812ca0dfabe3e39420b650d321 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -198,6 +198,8 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr, sk->sk_v6_daddr = usin->sin6_addr; np->flow_label = fl6.flowlabel; + ip6_set_txhash(sk); + /* * TCP over IPv4 */ @@ -1132,6 +1134,8 @@ static struct sock *tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb, newsk->sk_v6_rcv_saddr = ireq->ir_v6_loc_addr; newsk->sk_bound_dev_if = ireq->ir_iif; + ip6_set_txhash(newsk); + /* Now IPv6 options... First: no IPv4 options.