passt/icmp.h
Stefano Brivio dd581730e5 tap: Completely de-serialise input message batches
Until now, messages would be passed to protocol handlers in a single
batch only if they happened to be dequeued in a row. Packets
interleaved between different connections would result in multiple
calls to the same protocol handler for a single connection.

Instead, keep track of incoming packet descriptors, arrange them in
sequences, and call protocol handlers only as we completely sorted
input messages in batches.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
2021-09-27 01:28:02 +02:00

36 lines
864 B
C

#ifndef ICMP_H
#define ICMP_H
#define ICMP_TIMER_INTERVAL 1000 /* ms */
struct ctx;
void icmp_sock_handler(struct ctx *c, union epoll_ref ref, uint32_t events,
struct timespec *now);
int icmp_tap_handler(struct ctx *c, int af, void *addr,
struct tap_l4_msg *msg, int count, struct timespec *now);
void icmp_timer(struct ctx *c, struct timespec *ts);
/**
* union icmp_epoll_ref - epoll reference portion for ICMP tracking
* @v6: Set for IPv6 sockets or connections
* @u32: Opaque u32 value of reference
* @id: Associated echo identifier, needed if bind() fails
*/
union icmp_epoll_ref {
struct {
uint32_t v6:1,
id:16;
};
uint32_t u32;
};
/**
* struct icmp_ctx - Execution context for ICMP routines
* @timer_run: Timestamp of most recent timer run
*/
struct icmp_ctx {
struct timespec timer_run;
};
#endif /* ICMP_H */