diff options
| author | Jakub Sitnicki <jakub@cloudflare.com> | 2020-07-17 12:35:24 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-07-17 20:18:16 -0700 |
| commit | 80b373f74f9e28b0093930a6b95c929732f02512 (patch) | |
| tree | 7174381683aa6f3bb0c48a77033ea00c7bb4efdf /net/ipv4/inet_hashtables.c | |
| parent | e9ddbb7707ff5891616240026062b8c1e29864ca (diff) | |
inet: Extract helper for selecting socket from reuseport group
Prepare for calling into reuseport from __inet_lookup_listener as well.
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200717103536.397595-4-jakub@cloudflare.com
Diffstat (limited to 'net/ipv4/inet_hashtables.c')
| -rw-r--r-- | net/ipv4/inet_hashtables.c | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c index 2bbaaf0c7176..ab64834837c8 100644 --- a/net/ipv4/inet_hashtables.c +++ b/net/ipv4/inet_hashtables.c @@ -246,6 +246,21 @@ static inline int compute_score(struct sock *sk, struct net *net, return score; } +static inline struct sock *lookup_reuseport(struct net *net, struct sock *sk, + struct sk_buff *skb, int doff, + __be32 saddr, __be16 sport, + __be32 daddr, unsigned short hnum) +{ + struct sock *reuse_sk = NULL; + u32 phash; + + if (sk->sk_reuseport) { + phash = inet_ehashfn(net, daddr, hnum, saddr, sport); + reuse_sk = reuseport_select_sock(sk, phash, skb, doff); + } + return reuse_sk; +} + /* * Here are some nice properties to exploit here. The BSD API * does not allow a listening sock to specify the remote port nor the @@ -265,21 +280,17 @@ static struct sock *inet_lhash2_lookup(struct net *net, struct inet_connection_sock *icsk; struct sock *sk, *result = NULL; int score, hiscore = 0; - u32 phash = 0; inet_lhash2_for_each_icsk_rcu(icsk, &ilb2->head) { sk = (struct sock *)icsk; score = compute_score(sk, net, hnum, daddr, dif, sdif, exact_dif); if (score > hiscore) { - if (sk->sk_reuseport) { - phash = inet_ehashfn(net, daddr, hnum, - saddr, sport); - result = reuseport_select_sock(sk, phash, - skb, doff); - if (result) - return result; - } + result = lookup_reuseport(net, sk, skb, doff, + saddr, sport, daddr, hnum); + if (result) + return result; + result = sk; hiscore = score; } |