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tcp, udp: Allow binding ports in init namespace to both tap and loopback

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Traffic with loopback source address will be forwarded to the direct
loopback connection in the namespace, and the tap interface is used
for the rest.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
Stefano Brivio 2021-07-26 14:10:29 +02:00
parent f4aaa471a1
commit 86b273150a
6 changed files with 144 additions and 64 deletions

10
util.h
View file

@ -115,11 +115,17 @@ void debug(const char *format, ...);
#include <linux/ip.h>
#include <limits.h>
enum bind_type {
BIND_ANY = 0,
BIND_LOOPBACK,
BIND_EXT,
};
struct ctx;
char *ipv6_l4hdr(struct ipv6hdr *ip6h, uint8_t *proto);
int sock_l4(struct ctx *c, int af, uint8_t proto, uint16_t port, int lo,
uint32_t data);
int sock_l4(struct ctx *c, int af, uint8_t proto, uint16_t port,
enum bind_type bind_addr, uint32_t data);
int timespec_diff_ms(struct timespec *a, struct timespec *b);
void bitmap_set(uint8_t *map, int bit);
void bitmap_clear(uint8_t *map, int bit);