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net: move tcpv4_offload and tcpv6_offload to net_hotdata 

These are used in TCP fast paths.

Move them into net_hotdata for better cache locality.

v2: tcpv6_offload definition depends on CONFIG_INET

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/20240306160031.874438-8-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet 2024-03-06 16:00:20 +00:00 committed by Jakub Kicinski
parent 61a0be1a53
commit 0139806eeb
3 changed files with 19 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/net/hotdata.h
View File

@ -4,12 +4,15 @@
#include <linux/types.h>
#include <linux/netdevice.h>
#include <net/protocol.h>
/* Read mostly data used in network fast paths. */
struct net_hotdata {
#if IS_ENABLED(CONFIG_INET)
struct packet_offload ip_packet_offload;
struct net_offload tcpv4_offload;
struct packet_offload ipv6_packet_offload;
struct net_offload tcpv6_offload;
#endif
struct list_head offload_base;
struct list_head ptype_all;

17
net/ipv4/tcp_offload.c
View File

@ -345,15 +345,14 @@ INDIRECT_CALLABLE_SCOPE int tcp4_gro_complete(struct sk_buff *skb, int thoff)
return 0;
}
static const struct net_offload tcpv4_offload = {
.callbacks = {
.gso_segment = tcp4_gso_segment,
.gro_receive = tcp4_gro_receive,
.gro_complete = tcp4_gro_complete,
},
};
int __init tcpv4_offload_init(void)
{
return inet_add_offload(&tcpv4_offload, IPPROTO_TCP);
net_hotdata.tcpv4_offload = (struct net_offload) {
.callbacks = {
.gso_segment = tcp4_gso_segment,
.gro_receive = tcp4_gro_receive,
.gro_complete = tcp4_gro_complete,
},
};
return inet_add_offload(&net_hotdata.tcpv4_offload, IPPROTO_TCP);
}

16
net/ipv6/tcpv6_offload.c
View File

@ -66,15 +66,15 @@ static struct sk_buff *tcp6_gso_segment(struct sk_buff *skb,
return tcp_gso_segment(skb, features);
}
static const struct net_offload tcpv6_offload = {
.callbacks = {
.gso_segment = tcp6_gso_segment,
.gro_receive = tcp6_gro_receive,
.gro_complete = tcp6_gro_complete,
},
};
int __init tcpv6_offload_init(void)
{
return inet6_add_offload(&tcpv6_offload, IPPROTO_TCP);
net_hotdata.tcpv6_offload = (struct net_offload) {
.callbacks = {
.gso_segment = tcp6_gso_segment,
.gro_receive = tcp6_gro_receive,
.gro_complete = tcp6_gro_complete,
},
};
return inet6_add_offload(&net_hotdata.tcpv6_offload, IPPROTO_TCP);
}