From: Duncan Roe <duncan_roe@optusnet.com.au>
To: pablo@netfilter.org
Cc: netfilter-devel@vger.kernel.org
Subject: [PATCH libnetfilter_queue 1/1] src: Fix value returned by nfq_tcp_get_payload_len()
Date: Wed, 8 Jan 2020 08:42:24 +1100 [thread overview]
Message-ID: <20200107214224.9549-2-duncan_roe@optusnet.com.au> (raw)
In-Reply-To: <20200107214224.9549-1-duncan_roe@optusnet.com.au>
Remember to subtract the TCP header length.
Signed-off-by: Duncan Roe <duncan_roe@optusnet.com.au>
---
| 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--git a/src/extra/tcp.c b/src/extra/tcp.c
index 0f83500..236663f 100644
--- a/src/extra/tcp.c
+++ b/src/extra/tcp.c
@@ -83,7 +83,7 @@ void *nfq_tcp_get_payload(struct tcphdr *tcph, struct pkt_buff *pktb)
EXPORT_SYMBOL
unsigned int nfq_tcp_get_payload_len(struct tcphdr *tcph, struct pkt_buff *pktb)
{
- return pktb->tail - pktb->transport_header;
+ return pktb->tail - pktb->transport_header -tcph->doff * 4;
}
/**
--
2.14.5
next prev parent reply other threads:[~2020-01-07 21:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-07 21:42 [PATCH libnetfilter_queue 0/1] src: Fix value returned by nfq_tcp_get_payload_len() Duncan Roe
2020-01-07 21:42 ` Duncan Roe [this message]
2020-01-10 11:18 ` [PATCH libnetfilter_queue 1/1] " Pablo Neira Ayuso
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