diff options
| -rw-r--r-- | net/ipv6/netfilter/nf_reject_ipv6.c | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/net/ipv6/netfilter/nf_reject_ipv6.c b/net/ipv6/netfilter/nf_reject_ipv6.c index dedee264b8f6..b9457473c176 100644 --- a/net/ipv6/netfilter/nf_reject_ipv6.c +++ b/net/ipv6/netfilter/nf_reject_ipv6.c @@ -223,33 +223,23 @@ void nf_reject_ip6_tcphdr_put(struct sk_buff *nskb, const struct tcphdr *oth, unsigned int otcplen) { struct tcphdr *tcph; - int needs_ack; skb_reset_transport_header(nskb); - tcph = skb_put(nskb, sizeof(struct tcphdr)); + tcph = skb_put_zero(nskb, sizeof(struct tcphdr)); /* Truncate to length (no data) */ tcph->doff = sizeof(struct tcphdr)/4; tcph->source = oth->dest; tcph->dest = oth->source; if (oth->ack) { - needs_ack = 0; tcph->seq = oth->ack_seq; - tcph->ack_seq = 0; } else { - needs_ack = 1; tcph->ack_seq = htonl(ntohl(oth->seq) + oth->syn + oth->fin + otcplen - (oth->doff<<2)); - tcph->seq = 0; + tcph->ack = 1; } - /* Reset flags */ - ((u_int8_t *)tcph)[13] = 0; tcph->rst = 1; - tcph->ack = needs_ack; - tcph->window = 0; - tcph->urg_ptr = 0; - tcph->check = 0; /* Adjust TCP checksum */ tcph->check = csum_ipv6_magic(&ipv6_hdr(nskb)->saddr, |