[DCCP]: Retrieve packet sequence number for error reporting
This fixes a problem when analysing erroneous packets in dccp_v{4,6}_err:
* dccp_hdr_seq currently takes an skb
* however, the transport headers in the skb are shifted, due to the
preceding IPv4/v6 header.
Fixed for v4 and v6 by changing dccp_hdr_seq to take a struct dccp_hdr as
argument. Verified that the correct sequence number is now reported in the
error handler.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index bbadd66..62428ff 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -173,7 +173,7 @@
icmpv6_err_convert(type, code, &err);
- seq = DCCP_SKB_CB(skb)->dccpd_seq;
+ seq = dccp_hdr_seq(dh);
/* Might be for an request_sock */
switch (sk->sk_state) {
struct request_sock *req, **prev;
@@ -787,7 +787,7 @@
dh = dccp_hdr(skb);
- DCCP_SKB_CB(skb)->dccpd_seq = dccp_hdr_seq(skb);
+ DCCP_SKB_CB(skb)->dccpd_seq = dccp_hdr_seq(dh);
DCCP_SKB_CB(skb)->dccpd_type = dh->dccph_type;
if (dccp_packet_without_ack(skb))