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| author | Lennart Poettering <lennart@poettering.net> | 2020-11-06 13:32:53 +0100 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2021-02-15 23:14:32 +0100 |
| commit | 80710ade03d971a8877fde8ce9d42eb2b07f4c47 (patch) | |
| tree | da07a32bb5416b4b26a20b5b1a3217a970726f9b /src/resolve/resolved-manager.h | |
| parent | 0886999416a299beeafdf91233eeb52512b1fbb9 (diff) | |
| download | systemd-80710ade03d971a8877fde8ce9d42eb2b07f4c47.tar.gz | |
resolved: instead of closing DNS UDP transaction fds right-away, add them to a socket "graveyard"
The "socket graveyard" shall contain sockets we have sent a question out
of, but not received a reply. If we'd close thus sockets immediately
when we are not interested anymore, we'd trigger ICMP port unreachable
messages once we after all *do* get a reply. Let's avoid that, by
leaving the fds open for a bit longer, until a timeout is reached or a
reply datagram received.
Fixes: #17421
Diffstat (limited to 'src/resolve/resolved-manager.h')
| -rw-r--r-- | src/resolve/resolved-manager.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/resolve/resolved-manager.h b/src/resolve/resolved-manager.h index 4dc55e6e41..90f5586230 100644 --- a/src/resolve/resolved-manager.h +++ b/src/resolve/resolved-manager.h @@ -21,6 +21,7 @@ typedef struct Manager Manager; #include "resolved-dns-stub.h" #include "resolved-dns-trust-anchor.h" #include "resolved-link.h" +#include "resolved-socket-graveyard.h" #define MANAGER_SEARCH_DOMAINS_MAX 256 #define MANAGER_DNS_SERVERS_MAX 256 @@ -144,6 +145,10 @@ struct Manager { VarlinkServer *varlink_server; sd_event_source *clock_change_event_source; + + LIST_HEAD(SocketGraveyard, socket_graveyard); + SocketGraveyard *socket_graveyard_oldest; + size_t n_socket_graveyard; }; /* Manager */ |