static int set_tcp(struct sk_buff *skb, const struct ovs_key_tcp *tcp_port_key) { struct tcphdr *th; int err; err = make_writable(skb, skb_transport_offset(skb) + sizeof(struct tcphdr)); if (unlikely(err)) return err; th = tcp_hdr(skb); if (tcp_port_key->tcp_src != th->source) set_tp_port(skb, &th->source, tcp_port_key->tcp_src, &th->check); if (tcp_port_key->tcp_dst != th->dest) set_tp_port(skb, &th->dest, tcp_port_key->tcp_dst, &th->check); return 0; }
static void set_udp_port(struct sk_buff *skb, __be16 *port, __be16 new_port) { struct udphdr *uh = udp_hdr(skb); if (uh->check && skb->ip_summed != CHECKSUM_PARTIAL) { set_tp_port(skb, port, new_port, &uh->check); if (!uh->check) uh->check = CSUM_MANGLED_0; } else { *port = new_port; skb->rxhash = 0; } }
static void set_udp_port(struct sk_buff *skb, __be16 *port, __be16 new_port) { struct udphdr *uh = udp_hdr(skb); if (uh->check && get_ip_summed(skb) != OVS_CSUM_PARTIAL) { set_tp_port(skb, port, new_port, &uh->check); if (!uh->check) uh->check = CSUM_MANGLED_0; } else { *port = new_port; skb_clear_rxhash(skb); } }