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/* SPDX-License-Identifier: GPL-2.0-or-later
 * Copyright (c) 2021 Red Hat GmbH
 * Author: Stefano Brivio <sbrivio@redhat.com>
 */

#ifndef UDP_H
#define UDP_H

#define UDP_TIMER_INTERVAL		1000 /* ms */

void udp_portmap_clear(void);
void udp_buf_sock_handler(const struct ctx *c, union epoll_ref ref, uint32_t events,
		      const struct timespec *now);
int udp_tap_handler(const struct ctx *c, uint8_t pif,
		    sa_family_t af, const void *saddr, const void *daddr,
		    const struct pool *p, int idx, const struct timespec *now);
int udp_sock_init(const struct ctx *c, int ns, sa_family_t af,
		  const void *addr, const char *ifname, in_port_t port);
int udp_init(struct ctx *c);
void udp_timer(struct ctx *c, const struct timespec *now);
void udp_update_l2_buf(const unsigned char *eth_d, const unsigned char *eth_s);

/**
 * union udp_epoll_ref - epoll reference portion for TCP connections
 * @port:		Source port for connected sockets, bound port otherwise
 * @pif:		pif for this socket
 * @bound:		Set if this file descriptor is a bound socket
 * @splice:		Set if descriptor packets to be "spliced"
 * @orig:		Set if a spliced socket which can originate "connections"
 * @v6:			Set for IPv6 sockets or connections
 * @u32:		Opaque u32 value of reference
 */
union udp_epoll_ref {
	struct {
		in_port_t	port;
		uint8_t		pif;
		bool		splice:1,
				orig:1,
				v6:1;
	};
	uint32_t u32;
};


/**
 * struct udp_ctx - Execution context for UDP
 * @fwd_in:		Port forwarding configuration for inbound packets
 * @fwd_out:		Port forwarding configuration for outbound packets
 * @timer_run:		Timestamp of most recent timer run
 */
struct udp_ctx {
	struct fwd_ports fwd_in;
	struct fwd_ports fwd_out;
	struct timespec timer_run;
};

#endif /* UDP_H */

debug log:

solving 4ae65723 ...
found 4ae65723 in https://archives.passt.top/passt-dev/20240614061348.3814736-26-david@gibson.dropbear.id.au/
found d25e66cb in https://archives.passt.top/passt-dev/20240614061348.3814736-21-david@gibson.dropbear.id.au/
found 5865def2 in https://passt.top/passt
preparing index
index prepared:
100644 5865def20856a269dddb05ae690ccff8b53bc41d	udp.h

applying [1/2] https://archives.passt.top/passt-dev/20240614061348.3814736-21-david@gibson.dropbear.id.au/
diff --git a/udp.h b/udp.h
index 5865def2..d25e66cb 100644


applying [2/2] https://archives.passt.top/passt-dev/20240614061348.3814736-26-david@gibson.dropbear.id.au/
diff --git a/udp.h b/udp.h
index d25e66cb..4ae65723 100644

Checking patch udp.h...
Applied patch udp.h cleanly.
Checking patch udp.h...
Applied patch udp.h cleanly.

index at:
100644 4ae657234ff7db5628904b93687da9a1147856df	udp.h

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