diff options
| author | Eric Dumazet <edumazet@google.com> | 2024-03-06 17:00:27 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-03-08 06:12:43 +0100 |
| commit | 6e0735723ab437793cfab02d50b3ae3539aeb520 (patch) | |
| tree | 4cd1f0fc1b3a701d34aa23e9b20299f3b9bfabb3 /net/ipv4/inet_hashtables.c | |
| parent | inet: move tcp_protocol and udp_protocol to net_hotdata (diff) | |
| download | linux-6e0735723ab437793cfab02d50b3ae3539aeb520.tar.xz linux-6e0735723ab437793cfab02d50b3ae3539aeb520.zip | |
inet: move inet_ehash_secret and udp_ehash_secret into net_hotdata
"struct net_protocol" has a 32bit hole in 32bit arches.
Use it to store the 32bit secret used by UDP and TCP,
to increase cache locality in rx path.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20240306160031.874438-15-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ipv4/inet_hashtables.c')
| -rw-r--r-- | net/ipv4/inet_hashtables.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c index 308ff34002ea..7498af320164 100644 --- a/net/ipv4/inet_hashtables.c +++ b/net/ipv4/inet_hashtables.c @@ -24,6 +24,7 @@ #include <net/inet6_hashtables.h> #endif #include <net/secure_seq.h> +#include <net/hotdata.h> #include <net/ip.h> #include <net/tcp.h> #include <net/sock_reuseport.h> @@ -32,8 +33,6 @@ u32 inet_ehashfn(const struct net *net, const __be32 laddr, const __u16 lport, const __be32 faddr, const __be16 fport) { - static u32 inet_ehash_secret __read_mostly; - net_get_random_once(&inet_ehash_secret, sizeof(inet_ehash_secret)); return __inet_ehashfn(laddr, lport, faddr, fport, |