diff options
| author | tobhe <tobhe@cvs.openbsd.org> | 2021-07-05 12:01:21 +0000 |
|---|---|---|
| committer | tobhe <tobhe@cvs.openbsd.org> | 2021-07-05 12:01:21 +0000 |
| commit | ae28cdc182dee1a511b5cf201b30ddb84f422f59 (patch) | |
| tree | cf3ad820d8bbb81f642fde23e04883907e9eed6a /sys/net/pfkeyv2.c | |
| parent | e705188ae4173be816a2cc1f3506d566d215a407 (diff) | |
Export tdb MTU to userland via SADB_GET. This helps debug path MTU
discovery issues with ESP in UDP.
ok bluhm@ sthen@ mpi@
Diffstat (limited to 'sys/net/pfkeyv2.c')
| -rw-r--r-- | sys/net/pfkeyv2.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sys/net/pfkeyv2.c b/sys/net/pfkeyv2.c index c7c09f6fec0..66ab56eb624 100644 --- a/sys/net/pfkeyv2.c +++ b/sys/net/pfkeyv2.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pfkeyv2.c,v 1.215 2021/05/30 21:01:27 bluhm Exp $ */ +/* $OpenBSD: pfkeyv2.c,v 1.216 2021/07/05 12:01:20 tobhe Exp $ */ /* * @(#)COPYRIGHT 1.1 (NRL) 17 January 1995 @@ -859,6 +859,9 @@ pfkeyv2_get(struct tdb *tdb, void **headers, void **buffer, int *lenp, if (tdb->tdb_udpencap_port) i += sizeof(struct sadb_x_udpencap); + if (tdb->tdb_mtu > 0) + i+= sizeof(struct sadb_x_mtu); + if (tdb->tdb_rdomain != tdb->tdb_rdomain_post) i += sizeof(struct sadb_x_rdomain); @@ -952,6 +955,11 @@ pfkeyv2_get(struct tdb *tdb, void **headers, void **buffer, int *lenp, export_udpencap(&p, tdb); } + if (tdb->tdb_mtu > 0) { + headers[SADB_X_EXT_MTU] = p; + export_mtu(&p, tdb); + } + /* Export rdomain switch, if present */ if (tdb->tdb_rdomain != tdb->tdb_rdomain_post) { headers[SADB_X_EXT_RDOMAIN] = p; |