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authorEric Dumazet <edumazet@google.com>2024-03-06 16:00:27 +0000
committerJakub Kicinski <kuba@kernel.org>2024-03-07 21:12:43 -0800
commit6e0735723ab437793cfab02d50b3ae3539aeb520 (patch)
tree4cd1f0fc1b3a701d34aa23e9b20299f3b9bfabb3 /include
parent571bf020be9c3b135e8b6dd87421919953268c1f (diff)
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 'include')
-rw-r--r--include/net/hotdata.h3
-rw-r--r--include/net/protocol.h1
2 files changed, 4 insertions, 0 deletions
diff --git a/include/net/hotdata.h b/include/net/hotdata.h
index 87215f7ac200..7a210ea6899c 100644
--- a/include/net/hotdata.h
+++ b/include/net/hotdata.h
@@ -36,6 +36,9 @@ struct net_hotdata {
int dev_rx_weight;
};
+#define inet_ehash_secret net_hotdata.tcp_protocol.secret
+#define udp_ehash_secret net_hotdata.udp_protocol.secret
+
extern struct net_hotdata net_hotdata;
#endif /* _NET_HOTDATA_H */
diff --git a/include/net/protocol.h b/include/net/protocol.h
index 6aef8cb11cc8..3ff26e66735c 100644
--- a/include/net/protocol.h
+++ b/include/net/protocol.h
@@ -46,6 +46,7 @@ struct net_protocol {
* socket lookup?
*/
icmp_strict_tag_validation:1;
+ u32 secret;
};
#if IS_ENABLED(CONFIG_IPV6)