netfilter: only warn once on wrong seqadj usage

[platform/adaptation/renesas_rcar/renesas_kernel.git] / net / netfilter / nf_conntrack_seqadj.c

diff --git a/net/netfilter/nf_conntrack_seqadj.c b/net/netfilter/nf_conntrack_seqadj.c
index 5f9bfd0..f6e2ae9 100644 (file)
--- a/net/netfilter/nf_conntrack_seqadj.c
+++ b/net/netfilter/nf_conntrack_seqadj.c
@@ -36,13 +36,18 @@ int nf_ct_seqadj_set(struct nf_conn *ct, enum ip_conntrack_info ctinfo,
        if (off == 0)
                return 0;
 
+       if (unlikely(!seqadj)) {
+               WARN_ONCE(1, "Missing nfct_seqadj_ext_add() setup call\n");
+               return 0;
+       }
+
        set_bit(IPS_SEQ_ADJUST_BIT, &ct->status);
 
        spin_lock_bh(&ct->lock);
        this_way = &seqadj->seq[dir];
        if (this_way->offset_before == this_way->offset_after ||
-           before(this_way->correction_pos, seq)) {
-               this_way->correction_pos = seq;
+           before(this_way->correction_pos, ntohl(seq))) {
+               this_way->correction_pos = ntohl(seq);
                this_way->offset_before  = this_way->offset_after;
                this_way->offset_after  += off;
        }