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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /include/net/sock_reuseport.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/net/sock_reuseport.h')
-rw-r--r--include/net/sock_reuseport.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/include/net/sock_reuseport.h b/include/net/sock_reuseport.h
new file mode 100644
index 0000000000..6ec140b0a6
--- /dev/null
+++ b/include/net/sock_reuseport.h
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _SOCK_REUSEPORT_H
+#define _SOCK_REUSEPORT_H
+
+#include <linux/filter.h>
+#include <linux/skbuff.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <net/sock.h>
+
+extern spinlock_t reuseport_lock;
+
+struct sock_reuseport {
+ struct rcu_head rcu;
+
+ u16 max_socks; /* length of socks */
+ u16 num_socks; /* elements in socks */
+ u16 num_closed_socks; /* closed elements in socks */
+ u16 incoming_cpu;
+ /* The last synq overflow event timestamp of this
+ * reuse->socks[] group.
+ */
+ unsigned int synq_overflow_ts;
+ /* ID stays the same even after the size of socks[] grows. */
+ unsigned int reuseport_id;
+ unsigned int bind_inany:1;
+ unsigned int has_conns:1;
+ struct bpf_prog __rcu *prog; /* optional BPF sock selector */
+ struct sock *socks[]; /* array of sock pointers */
+};
+
+extern int reuseport_alloc(struct sock *sk, bool bind_inany);
+extern int reuseport_add_sock(struct sock *sk, struct sock *sk2,
+ bool bind_inany);
+extern void reuseport_detach_sock(struct sock *sk);
+void reuseport_stop_listen_sock(struct sock *sk);
+extern struct sock *reuseport_select_sock(struct sock *sk,
+ u32 hash,
+ struct sk_buff *skb,
+ int hdr_len);
+struct sock *reuseport_migrate_sock(struct sock *sk,
+ struct sock *migrating_sk,
+ struct sk_buff *skb);
+extern int reuseport_attach_prog(struct sock *sk, struct bpf_prog *prog);
+extern int reuseport_detach_prog(struct sock *sk);
+
+static inline bool reuseport_has_conns(struct sock *sk)
+{
+ struct sock_reuseport *reuse;
+ bool ret = false;
+
+ rcu_read_lock();
+ reuse = rcu_dereference(sk->sk_reuseport_cb);
+ if (reuse && reuse->has_conns)
+ ret = true;
+ rcu_read_unlock();
+
+ return ret;
+}
+
+void reuseport_has_conns_set(struct sock *sk);
+void reuseport_update_incoming_cpu(struct sock *sk, int val);
+
+#endif /* _SOCK_REUSEPORT_H */