diff options
| author | Lorenz Bauer <lmb@isovalent.com> | 2023-07-20 18:30:08 +0300 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2023-07-25 23:51:44 +0300 |
| commit | 0f495f7617229772403e683033abc473f0f0553c (patch) | |
| tree | 14162556d8b75af77a81d29a147babdbbf9c8735 /include/net/inet6_hashtables.h | |
| parent | ce796e60b3b196b61fcc565df195443cbb846ef0 (diff) | |
| download | linux-0f495f7617229772403e683033abc473f0f0553c.tar.xz | |
net: remove duplicate reuseport_lookup functions
There are currently four copies of reuseport_lookup: one each for
(TCP, UDP)x(IPv4, IPv6). This forces us to duplicate all callers of
those functions as well. This is already the case for sk_lookup
helpers (inet,inet6,udp4,udp6)_lookup_run_bpf.
There are two differences between the reuseport_lookup helpers:
1. They call different hash functions depending on protocol
2. UDP reuseport_lookup checks that sk_state != TCP_ESTABLISHED
Move the check for sk_state into the caller and use the INDIRECT_CALL
infrastructure to cut down the helpers to one per IP version.
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Lorenz Bauer <lmb@isovalent.com>
Link: https://lore.kernel.org/r/20230720-so-reuseport-v6-4-7021b683cdae@isovalent.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Diffstat (limited to 'include/net/inet6_hashtables.h')
| -rw-r--r-- | include/net/inet6_hashtables.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/include/net/inet6_hashtables.h b/include/net/inet6_hashtables.h index 032ddab48f8f..f89320b6fee3 100644 --- a/include/net/inet6_hashtables.h +++ b/include/net/inet6_hashtables.h @@ -48,12 +48,21 @@ struct sock *__inet6_lookup_established(struct net *net, const u16 hnum, const int dif, const int sdif); +typedef u32 (inet6_ehashfn_t)(const struct net *net, + const struct in6_addr *laddr, const u16 lport, + const struct in6_addr *faddr, const __be16 fport); + +inet6_ehashfn_t inet6_ehashfn; + +INDIRECT_CALLABLE_DECLARE(inet6_ehashfn_t udp6_ehashfn); + struct sock *inet6_lookup_reuseport(struct net *net, struct sock *sk, struct sk_buff *skb, int doff, const struct in6_addr *saddr, __be16 sport, const struct in6_addr *daddr, - unsigned short hnum); + unsigned short hnum, + inet6_ehashfn_t *ehashfn); struct sock *inet6_lookup_listener(struct net *net, struct inet_hashinfo *hashinfo, |