mirror of
https://passt.top/passt
synced 2025-06-23 06:55:34 +02:00
a7775e9550
Now that ICMP pass-through from socket-to-tap is in place, it is easy to support UDP based traceroute functionality in direction tap-to-socket. We fix that in this commit. Link: https://bugs.passt.top/show_bug.cgi?id=64 Signed-off-by: Jon Maloy <jmaloy@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later
|
|
* Copyright Red Hat
|
|
* Author: David Gibson <david@gibson.dropbear.id.au>
|
|
*
|
|
* UDP flow tracking data structures
|
|
*/
|
|
#ifndef UDP_FLOW_H
|
|
#define UDP_FLOW_H
|
|
|
|
/**
|
|
* struct udp_flow - Descriptor for a flow of UDP packets
|
|
* @f: Generic flow information
|
|
* @closed: Flow is already closed
|
|
* @ts: Activity timestamp
|
|
* @s: Socket fd (or -1) for each side of the flow
|
|
* @ttl: TTL or hop_limit for both sides
|
|
*/
|
|
struct udp_flow {
|
|
/* Must be first element */
|
|
struct flow_common f;
|
|
|
|
bool closed :1;
|
|
time_t ts;
|
|
int s[SIDES];
|
|
uint8_t ttl[SIDES];
|
|
};
|
|
|
|
struct udp_flow *udp_at_sidx(flow_sidx_t sidx);
|
|
flow_sidx_t udp_flow_from_sock(const struct ctx *c, union epoll_ref ref,
|
|
const union sockaddr_inany *s_in,
|
|
const struct timespec *now);
|
|
flow_sidx_t udp_flow_from_tap(const struct ctx *c,
|
|
uint8_t pif, sa_family_t af,
|
|
const void *saddr, const void *daddr,
|
|
in_port_t srcport, in_port_t dstport,
|
|
const struct timespec *now);
|
|
void udp_flow_close(const struct ctx *c, struct udp_flow *uflow);
|
|
bool udp_flow_defer(const struct udp_flow *uflow);
|
|
bool udp_flow_timer(const struct ctx *c, struct udp_flow *uflow,
|
|
const struct timespec *now);
|
|
|
|
#endif /* UDP_FLOW_H */
|