mirror of
https://passt.top/passt
synced 2024-07-01 23:42:41 +00:00
64a0ba3b27
Packets are received directly onto pre-cooked, static buffers for IPv4 (with partial checksum pre-calculation) and IPv6 frames, with pre-filled Ethernet addresses and, partially, IP headers, and sent out from the same buffers with sendmmsg(), for both passt and pasta (non-local traffic only) modes. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
#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,
|
|
struct timespec *now);
|
|
int udp_tap_handler(struct ctx *c, int af, void *addr,
|
|
struct tap_msg *msg, int count, struct timespec *now);
|
|
int udp_sock_init(struct ctx *c);
|
|
void udp_timer(struct ctx *c, struct timespec *ts);
|
|
void udp_update_l2_buf(unsigned char *eth_d, unsigned char *eth_s,
|
|
uint32_t *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 is associated to "spliced" connection
|
|
* @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 {
|
|
uint32_t bound:1,
|
|
splice:3,
|
|
#define UDP_TO_NS 1
|
|
#define UDP_TO_INIT 2
|
|
#define UDP_BACK_TO_NS 3
|
|
#define UDP_BACK_TO_INIT 4
|
|
|
|
v6:1,
|
|
port:16;
|
|
};
|
|
uint32_t u32;
|
|
};
|
|
|
|
|
|
/**
|
|
* struct udp_ctx - Execution context for UDP
|
|
* @port_to_tap: Ports bound host/init-side, packets to guest/tap
|
|
* @port_to_init: Ports bound namespace-side, spliced to init
|
|
* @port_to_ns: Ports bound init-side, spliced to namespace
|
|
* @timer_run: Timestamp of most recent timer run
|
|
*/
|
|
struct udp_ctx {
|
|
uint8_t port_to_tap [USHRT_MAX / 8];
|
|
uint8_t port_to_init [USHRT_MAX / 8];
|
|
uint8_t port_to_ns [USHRT_MAX / 8];
|
|
struct timespec timer_run;
|
|
};
|
|
|
|
#endif /* UDP_H */
|