diff options
Diffstat (limited to 'include/net/sock.h')
| -rw-r--r-- | include/net/sock.h | 36 |
1 files changed, 27 insertions, 9 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 341f8bafa0cf..6cbc16136357 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * INET An implementation of the TCP/IP protocol suite for the LINUX * operating system. INET is implemented using the BSD Socket @@ -30,12 +31,6 @@ * respective headers and ipv4/v6, etc now * use private slabcaches for its socks * Pedro Hortas : New flags field for socket options - * - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #ifndef _SOCK_H #define _SOCK_H @@ -236,6 +231,8 @@ struct sock_common { /* public: */ }; +struct bpf_sk_storage; + /** * struct sock - network layer representation of sockets * @__sk_common: shared layout with inet_timewait_sock @@ -368,6 +365,7 @@ struct sock { atomic_t sk_drops; int sk_rcvlowat; struct sk_buff_head sk_error_queue; + struct sk_buff *sk_rx_skb_cache; struct sk_buff_head sk_receive_queue; /* * The backlog queue is special, it is always used with @@ -414,6 +412,7 @@ struct sock { struct sk_buff *sk_send_head; struct rb_root tcp_rtx_queue; }; + struct sk_buff *sk_tx_skb_cache; struct sk_buff_head sk_write_queue; __s32 sk_peek_off; int sk_write_pending; @@ -508,6 +507,9 @@ struct sock { #endif void (*sk_destruct)(struct sock *sk); struct sock_reuseport __rcu *sk_reuseport_cb; +#ifdef CONFIG_BPF_SYSCALL + struct bpf_sk_storage __rcu *sk_bpf_storage; +#endif struct rcu_head sk_rcu; }; @@ -966,7 +968,7 @@ static inline void sock_rps_record_flow_hash(__u32 hash) static inline void sock_rps_record_flow(const struct sock *sk) { #ifdef CONFIG_RPS - if (static_key_false(&rfs_needed)) { + if (static_branch_unlikely(&rfs_needed)) { /* Reading sk->sk_rxhash might incur an expensive cache line * miss. * @@ -1461,11 +1463,18 @@ static inline void sk_mem_uncharge(struct sock *sk, int size) __sk_mem_reclaim(sk, 1 << 20); } +DECLARE_STATIC_KEY_FALSE(tcp_tx_skb_cache_key); static inline void sk_wmem_free_skb(struct sock *sk, struct sk_buff *skb) { sock_set_flag(sk, SOCK_QUEUE_SHRUNK); sk->sk_wmem_queued -= skb->truesize; sk_mem_uncharge(sk, skb->truesize); + if (static_branch_unlikely(&tcp_tx_skb_cache_key) && + !sk->sk_tx_skb_cache && !skb_cloned(skb)) { + skb_zcopy_clear(skb, true); + sk->sk_tx_skb_cache = skb; + return; + } __kfree_skb(skb); } @@ -1607,6 +1616,8 @@ int sock_setsockopt(struct socket *sock, int level, int op, int sock_getsockopt(struct socket *sock, int level, int op, char __user *optval, int __user *optlen); +int sock_gettstamp(struct socket *sock, void __user *userstamp, + bool timeval, bool time32); struct sk_buff *sock_alloc_send_skb(struct sock *sk, unsigned long size, int noblock, int *errcode); struct sk_buff *sock_alloc_send_pskb(struct sock *sk, unsigned long header_len, @@ -2424,9 +2435,16 @@ static inline void skb_setup_tx_timestamp(struct sk_buff *skb, __u16 tsflags) * This routine must be called with interrupts disabled or with the socket * locked so that the sk_buff queue operation is ok. */ +DECLARE_STATIC_KEY_FALSE(tcp_rx_skb_cache_key); static inline void sk_eat_skb(struct sock *sk, struct sk_buff *skb) { __skb_unlink(skb, &sk->sk_receive_queue); + if (static_branch_unlikely(&tcp_rx_skb_cache_key) && + !sk->sk_rx_skb_cache) { + sk->sk_rx_skb_cache = skb; + skb_orphan(skb); + return; + } __kfree_skb(skb); } @@ -2487,8 +2505,6 @@ static inline bool sk_listener(const struct sock *sk) } void sock_enable_timestamp(struct sock *sk, int flag); -int sock_get_timestamp(struct sock *, struct timeval __user *); -int sock_get_timestampns(struct sock *, struct timespec __user *); int sock_recv_errqueue(struct sock *sk, struct msghdr *msg, int len, int level, int type); @@ -2518,6 +2534,8 @@ extern int sysctl_optmem_max; extern __u32 sysctl_wmem_default; extern __u32 sysctl_rmem_default; +DECLARE_STATIC_KEY_FALSE(net_high_order_alloc_disable_key); + static inline int sk_get_wmem0(const struct sock *sk, const struct proto *proto) { /* Does this proto have per netns sysctl_wmem ? */ |