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6e0735723a
"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>
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef _NET_HOTDATA_H
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#define _NET_HOTDATA_H
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#include <linux/types.h>
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#include <linux/netdevice.h>
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#include <net/protocol.h>
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/* Read mostly data used in network fast paths. */
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struct net_hotdata {
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#if IS_ENABLED(CONFIG_INET)
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struct packet_offload ip_packet_offload;
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struct net_offload tcpv4_offload;
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struct net_protocol tcp_protocol;
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struct net_offload udpv4_offload;
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struct net_protocol udp_protocol;
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struct packet_offload ipv6_packet_offload;
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struct net_offload tcpv6_offload;
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#if IS_ENABLED(CONFIG_IPV6)
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struct inet6_protocol tcpv6_protocol;
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struct inet6_protocol udpv6_protocol;
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#endif
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struct net_offload udpv6_offload;
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#endif
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struct list_head offload_base;
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struct list_head ptype_all;
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struct kmem_cache *skbuff_cache;
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struct kmem_cache *skbuff_fclone_cache;
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struct kmem_cache *skb_small_head_cache;
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int gro_normal_batch;
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int netdev_budget;
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int netdev_budget_usecs;
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int tstamp_prequeue;
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int max_backlog;
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int dev_tx_weight;
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int dev_rx_weight;
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};
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#define inet_ehash_secret net_hotdata.tcp_protocol.secret
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#define udp_ehash_secret net_hotdata.udp_protocol.secret
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extern struct net_hotdata net_hotdata;
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#endif /* _NET_HOTDATA_H */
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