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-rw-r--r--net/batman-adv/hard-interface.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index 9fdfa9984f02..7bdc5f26442e 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -558,6 +558,9 @@ static void batadv_hardif_recalc_extra_skbroom(struct net_device *soft_iface)
needed_headroom = lower_headroom + (lower_header_len - ETH_HLEN);
needed_headroom += batadv_max_header_len();
+ /* fragmentation headers don't strip the unicast/... header */
+ needed_headroom += sizeof(struct batadv_frag_packet);
+
soft_iface->needed_headroom = needed_headroom;
soft_iface->needed_tailroom = lower_tailroom;
}