[Full-Disclosure] IPSEC on arm-linux board

[Pritesh Harivadan Shah <priteshshah@xxxxxxxxxxxxxxx>]

Dear All,

We have tested IPSEC on regular linux gateways.

Now we are testing it on arm-linux board.

We are able to establish IPSEC SA. But on arm-linux, ping from one end to
other end does not work.

By tracing, it looks that, ipsec interface takes the packet but does not
through out.

The moment we stop IPSEC, it starts pinging through interface, which is
attached to IPSEC. Basically packets are dropped by IPSEC interface, as per
log enclsoed and our observation.

Enclosed below log file with KLIPSDEbug on. Any help is appreciated.. I
suspect some problem either kernel level, or with
freeswan version. We are using freeswan 1.99 cross compiled one for arm
board.

******************************** LOG FILE  START

klips_debug:ipsec_tunnel_hard_header: skb->dev=ipsec0 dev=ipsec0.
klips_debug:ipsec_tunnel_hard_header: Revectored 0x00000000->0xc0b201c8
len=60 t
ype=2048 dev=ipsec0->wan dev_addr=00:01:03:13:96:ef ip=1e1e1e01->28282801
klips_debug:ipsec_tunnel_start_xmit: >>> skb->len=74
hard_header_len:14<6>klips_
debug:   IP: ihl:20 ver:4 tos:0 tlen:60 id:35719 frag_off:0 ttl:127 proto:1
(ICM
P) chk:9202 saddr:30.30.30.1 daddr:40.40.40.1 type:code=8:0
klips_debug:ipsec_findroute: 30.30.30.1->40.40.40.1
klips_debug:rj_match: * See if we match exactly as a host destination
klips_debug:rj_match: ** try to match a leaf, t=0xc09a4580
klips_debug:ipsec_findroute: found, points to proto=4, spi=1004,
dst=c0a80a3c.
klips_debug:ipsec_tunnel_start_xmit: checking for local udp/500 IKE packet
saddr
=1e1e1e01, er=c09a4580, daddr=28282801, er_dst=c0a80a3c, proto=1 sport=0
dport=0

klips_debug:ipsec_tunnel_start_xmit: Original head,tailroom: 18,1988
klips_debug:gettdb: linked entry in tdb table for hash=18 of
SA:tun0x1004@xxxxxx
8.10.60 requested.
klips_debug:ipsec_tunnel_start_xmit: found Tunnel Descriptor Block --
SA:<IPIP>
tun0x1004@xxxxxxxxxxxxx
klips_debug:ipsec_tunnel_start_xmit: calling room for <IPIP>,
SA:tun0x1004@xxxxx
68.10.60
klips_debug:ipsec_tunnel_start_xmit: Required head,tailroom: 20,0
klips_debug:ipsec_tunnel_start_xmit: TDB in dead state for
SA:<ESP_3DES_HMAC_MD5
Ø       esp0xe42b83e@xxxxxxxxxxxxx, can no longer be used, dropping packet.

************************************* LOG FILE END

Regards

Pritesh

"As a well spent day brings happy sleep, so life well used brings happy
death."  -   Leonardo da Vinci

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