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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

15
passt.c
View file

@ -329,15 +329,27 @@ static int get_bound_ports_ns(void *arg)
procfs_scan_listen("tcp", c->tcp.port4_to_tap);
procfs_scan_listen("tcp", c->udp.port4_to_tap);
procfs_scan_listen("udp", c->udp.port4_to_tap);
procfs_scan_listen("tcp", c->tcp.port4_to_ns);
procfs_scan_listen("tcp", c->udp.port4_to_ns);
procfs_scan_listen("udp", c->udp.port4_to_ns);
}
if (c->v6) {
if (c->v4) {
procfs_scan_listen("tcp6", c->tcp.port4_to_tap);
procfs_scan_listen("tcp6", c->udp.port4_to_tap);
procfs_scan_listen("udp6", c->udp.port4_to_tap);
procfs_scan_listen("tcp6", c->tcp.port4_to_ns);
procfs_scan_listen("tcp6", c->udp.port4_to_ns);
procfs_scan_listen("udp6", c->udp.port4_to_ns);
}
procfs_scan_listen("tcp6", c->tcp.port6_to_tap);
procfs_scan_listen("tcp6", c->udp.port6_to_tap);
procfs_scan_listen("udp6", c->udp.port6_to_tap);
procfs_scan_listen("tcp6", c->tcp.port6_to_ns);
procfs_scan_listen("tcp6", c->udp.port6_to_ns);
procfs_scan_listen("udp6", c->udp.port6_to_ns);
@ -359,16 +371,19 @@ static void get_bound_ports(struct ctx *c)
if (c->v4) {
procfs_scan_listen("tcp", c->tcp.port4_to_init);
procfs_scan_listen("tcp", c->udp.port4_to_init);
procfs_scan_listen("udp", c->udp.port4_to_init);
}
if (c->v6) {
if (c->v4) {
procfs_scan_listen("tcp6", c->tcp.port4_to_init);
procfs_scan_listen("tcp6", c->udp.port4_to_init);
procfs_scan_listen("udp6", c->udp.port4_to_init);
}
procfs_scan_listen("tcp6", c->tcp.port6_to_init);
procfs_scan_listen("tcp6", c->udp.port6_to_init);
procfs_scan_listen("udp6", c->udp.port6_to_init);
}