ipf: Handle non-zero L2 padding for first fragments.

Fixes: 4ea96698f667 ("Userspace datapath: Add fragmentation handling.")
Signed-off-by: Darrell Ball <dlu998@gmail.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/ipf.c b/lib/ipf.c
index acddc0266..97d5b580a 100644
--- a/lib/ipf.c
+++ b/lib/ipf.c
@@ -407,6 +407,7 @@ ipf_reassemble_v4_frags(struct ipf_list *ipf_list)
 {
     struct ipf_frag *frag_list = ipf_list->frag_list;
     struct dp_packet *pkt = dp_packet_clone(frag_list[0].pkt);
+    dp_packet_set_size(pkt, dp_packet_size(pkt) - dp_packet_l2_pad_size(pkt));
     struct ip_header *l3 = dp_packet_l3(pkt);
     int len = ntohs(l3->ip_tot_len);
 
@@ -451,6 +452,7 @@ ipf_reassemble_v6_frags(struct ipf_list *ipf_list)
 {
     struct ipf_frag *frag_list = ipf_list->frag_list;
     struct dp_packet *pkt = dp_packet_clone(frag_list[0].pkt);
+    dp_packet_set_size(pkt, dp_packet_size(pkt) - dp_packet_l2_pad_size(pkt));
     struct  ovs_16aligned_ip6_hdr *l3 = dp_packet_l3(pkt);
     int pl = ntohs(l3->ip6_plen) - sizeof(struct ovs_16aligned_ip6_frag);