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58 lines
1.5 KiB
58 lines
1.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _SOCK_REUSEPORT_H |
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#define _SOCK_REUSEPORT_H |
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#include <linux/filter.h> |
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#include <linux/skbuff.h> |
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#include <linux/types.h> |
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#include <linux/spinlock.h> |
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#include <net/sock.h> |
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extern spinlock_t reuseport_lock; |
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struct sock_reuseport { |
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struct rcu_head rcu; |
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u16 max_socks; /* length of socks */ |
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u16 num_socks; /* elements in socks */ |
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/* The last synq overflow event timestamp of this |
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* reuse->socks[] group. |
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*/ |
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unsigned int synq_overflow_ts; |
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/* ID stays the same even after the size of socks[] grows. */ |
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unsigned int reuseport_id; |
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unsigned int bind_inany:1; |
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unsigned int has_conns:1; |
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struct bpf_prog __rcu *prog; /* optional BPF sock selector */ |
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struct sock *socks[]; /* array of sock pointers */ |
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}; |
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extern int reuseport_alloc(struct sock *sk, bool bind_inany); |
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extern int reuseport_add_sock(struct sock *sk, struct sock *sk2, |
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bool bind_inany); |
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extern void reuseport_detach_sock(struct sock *sk); |
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extern struct sock *reuseport_select_sock(struct sock *sk, |
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u32 hash, |
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struct sk_buff *skb, |
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int hdr_len); |
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extern int reuseport_attach_prog(struct sock *sk, struct bpf_prog *prog); |
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extern int reuseport_detach_prog(struct sock *sk); |
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static inline bool reuseport_has_conns(struct sock *sk, bool set) |
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{ |
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struct sock_reuseport *reuse; |
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bool ret = false; |
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rcu_read_lock(); |
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reuse = rcu_dereference(sk->sk_reuseport_cb); |
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if (reuse) { |
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if (set) |
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reuse->has_conns = 1; |
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ret = reuse->has_conns; |
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} |
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rcu_read_unlock(); |
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return ret; |
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} |
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#endif /* _SOCK_REUSEPORT_H */
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