mirror of
https://passt.top/passt
synced 2024-06-30 15:02:40 +00:00
8218d99013
union epoll_ref has a deeply nested set of structs and unions to let us subdivide it into the various different fields we want. This means that referencing elements can involve an awkward long string of intermediate fields. Using C11 anonymous structs and unions lets us do this less clumsily. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/* 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_sock_handler(struct ctx *c, union epoll_ref ref, uint32_t events,
|
|
const struct timespec *now);
|
|
int udp_tap_handler(struct ctx *c, int af, const void *addr,
|
|
const struct pool *p, 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 *ts);
|
|
void udp_update_l2_buf(const unsigned char *eth_d, const unsigned char *eth_s,
|
|
const struct in_addr *ip_da);
|
|
|
|
/**
|
|
* union udp_epoll_ref - epoll reference portion for TCP connections
|
|
* @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"
|
|
* @ns: Set if this is a socket in the pasta network namespace
|
|
* @v6: Set for IPv6 sockets or connections
|
|
* @port: Source port for connected sockets, bound port otherwise
|
|
* @u32: Opaque u32 value of reference
|
|
*/
|
|
union udp_epoll_ref {
|
|
struct {
|
|
bool splice:1,
|
|
orig:1,
|
|
ns:1,
|
|
v6:1;
|
|
uint32_t port:16;
|
|
};
|
|
uint32_t u32;
|
|
};
|
|
|
|
|
|
/**
|
|
* udp_port_fwd - UDP specific port forwarding configuration
|
|
* @f: Generic forwarding configuration
|
|
* @rdelta: Reversed delta map to translate source ports on return packets
|
|
*/
|
|
struct udp_port_fwd {
|
|
struct port_fwd f;
|
|
in_port_t rdelta[NUM_PORTS];
|
|
};
|
|
|
|
/**
|
|
* 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 udp_port_fwd fwd_in;
|
|
struct udp_port_fwd fwd_out;
|
|
struct timespec timer_run;
|
|
};
|
|
|
|
#endif /* UDP_H */
|