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Enable DF (don't fragment) flag on listening UDP sockets

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This commits uses the isc__nm_socket_dontfrag() helper function to
enable setting DF bit on the outgoing UDP packets.
This commit is contained in:
Ondřej Surý
2020-10-05 10:51:40 +02:00
committed by Ondřej Surý
parent 63c29dcdfa
commit b9a42446e8
1 changed files with 4 additions and 2 deletions
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6
lib/isc/netmgr/udp.c
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@@ -66,7 +66,7 @@ isc_nm_listenudp(isc_nm_t *mgr, isc_nmiface_t *iface, isc_nm_recv_cb_t cb,
for (size_t i = 0; i < mgr->nworkers; i++) {
isc_result_t result;
uint16_t family = iface->addr.type.sa.sa_family;
sa_family_t sa_family = iface->addr.type.sa.sa_family;
isc__netievent_udplisten_t *ievent = NULL;
isc_nmsocket_t *csock = &nsock->children[i];
@@ -79,7 +79,7 @@ isc_nm_listenudp(isc_nm_t *mgr, isc_nmiface_t *iface, isc_nm_recv_cb_t cb,
INSIST(csock->recv_cb == NULL && csock->recv_cbarg == NULL);
csock->recv_cb = cb;
csock->recv_cbarg = cbarg;
csock->fd = socket(family, SOCK_DGRAM, 0);
csock->fd = socket(sa_family, SOCK_DGRAM, 0);
RUNTIME_CHECK(csock->fd >= 0);
result = isc__nm_socket_reuse(csock->fd);
@@ -96,6 +96,8 @@ isc_nm_listenudp(isc_nm_t *mgr, isc_nmiface_t *iface, isc_nm_recv_cb_t cb,
*/
(void)isc__nm_socket_incoming_cpu(csock->fd);
(void)isc__nm_socket_dontfrag(csock->fd, sa_family);
ievent = isc__nm_get_ievent(mgr, netievent_udplisten);
ievent->sock = csock;
isc__nm_enqueue_ievent(&mgr->workers[i],