diff mbox series

[net-next,15/18] ipv6: move inet6_ehash_secret and udp6_ehash_secret into net_hotdata

Message ID 20240305160413.2231423-16-edumazet@google.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net: group together hot data | expand

Checks

Context Check Description
netdev/series_format fail Series longer than 15 patches (and no cover letter)
netdev/tree_selection success Clearly marked for net-next, async
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1053 this patch: 1053
netdev/build_tools success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 6 of 6 maintainers
netdev/build_clang success Errors and warnings before: 957 this patch: 957
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1071 this patch: 1071
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 36 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Eric Dumazet March 5, 2024, 4:04 p.m. UTC 
"struct inet6_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>
---
 include/net/hotdata.h       | 2 ++
 include/net/protocol.h      | 1 +
 net/ipv6/inet6_hashtables.c | 2 +-
 net/ipv6/udp.c              | 1 -
 4 files changed, 4 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/include/net/hotdata.h b/include/net/hotdata.h
index 4dd86be99116ff83f2524461a006565b2ade2241..e4dac2f859efd421b975a61360536af949046d0e 100644
--- a/include/net/hotdata.h
+++ b/include/net/hotdata.h
@@ -38,6 +38,8 @@  struct net_hotdata {
 
 #define inet_ehash_secret	net_hotdata.tcp_protocol.secret
 #define udp_ehash_secret	net_hotdata.udp_protocol.secret
+#define inet6_ehash_secret	net_hotdata.tcpv6_protocol.secret
+#define udp6_ehash_secret	net_hotdata.udpv6_protocol.secret
 
 extern struct net_hotdata net_hotdata;
 
diff --git a/include/net/protocol.h b/include/net/protocol.h
index 3ff26e66735cec98b08eadb1c3f129e011923cb0..213649d2ab098edc4eb9f44a5403540887c2b8ef 100644
--- a/include/net/protocol.h
+++ b/include/net/protocol.h
@@ -60,6 +60,7 @@  struct inet6_protocol {
 			       __be32 info);
 
 	unsigned int	flags;	/* INET6_PROTO_xxx */
+	u32		secret;
 };
 
 #define INET6_PROTO_NOPOLICY	0x1
diff --git a/net/ipv6/inet6_hashtables.c b/net/ipv6/inet6_hashtables.c
index b0e8d278e8a9b794d0001efdc0f43716f9a34f8f..0fee97f3166cf8326b3b714ac6bde48ca5188cec 100644
--- a/net/ipv6/inet6_hashtables.c
+++ b/net/ipv6/inet6_hashtables.c
@@ -14,6 +14,7 @@ 
 #include <linux/random.h>
 
 #include <net/addrconf.h>
+#include <net/hotdata.h>
 #include <net/inet_connection_sock.h>
 #include <net/inet_hashtables.h>
 #include <net/inet6_hashtables.h>
@@ -25,7 +26,6 @@  u32 inet6_ehashfn(const struct net *net,
 		  const struct in6_addr *laddr, const u16 lport,
 		  const struct in6_addr *faddr, const __be16 fport)
 {
-	static u32 inet6_ehash_secret __read_mostly;
 	static u32 ipv6_hash_secret __read_mostly;
 
 	u32 lhash, fhash;
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 97d86909aabb6588d0bba901f6df1f23a4f2e561..1e1c67a51675e8534a953a6d4d63211388d95ca9 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -79,7 +79,6 @@  u32 udp6_ehashfn(const struct net *net,
 		 const struct in6_addr *faddr,
 		 const __be16 fport)
 {
-	static u32 udp6_ehash_secret __read_mostly;
 	static u32 udp_ipv6_hash_secret __read_mostly;
 
 	u32 lhash, fhash;