- switch (ntohs(mask)) {
- case 0xffff:
- if (tci == htons(0)) {
- /* Match only packets that have no 802.1Q header. */
- rule->wc.wildcards &= ~(OFPFW_DL_VLAN | OFPFW_DL_VLAN_PCP);
- rule->flow.dl_vlan = htons(OFP_VLAN_NONE);
- rule->flow.dl_vlan_pcp = 0;
- return true;
- } else if (tci & htons(VLAN_CFI)) {
- /* Match only packets that have a specific 802.1Q VID and PCP. */
- rule->wc.wildcards &= ~(OFPFW_DL_VLAN | OFPFW_DL_VLAN_PCP);
- rule->flow.dl_vlan = htons(vlan_tci_to_vid(tci));
- rule->flow.dl_vlan_pcp = vlan_tci_to_pcp(tci);
- return true;
- } else {
- /* Impossible. */
- return false;
- }
-
- case 0x1fff:
- if (!(tci & htons(VLAN_CFI))) {
- return false;
- } else {
- /* Match only packets that have a specific 802.1Q VID. */
- cls_rule_set_dl_vlan(rule, tci & htons(VLAN_VID_MASK));
- rule->wc.wildcards |= OFPFW_DL_VLAN_PCP;
- rule->flow.dl_vlan_pcp = 0;
- return true;
- }
-
- case 0xf000:
- if (!(tci & htons(VLAN_CFI))) {
- return false;
- } else {
- /* Match only packets that have a specific 802.1Q PCP. */
- cls_rule_set_dl_vlan_pcp(rule, vlan_tci_to_pcp(tci));
- rule->wc.wildcards |= OFPFW_DL_VLAN;
- rule->flow.dl_vlan = 0;
- return true;
- }
-
- case 0x0000:
- /* Match anything. */
- rule->wc.wildcards |= OFPFW_DL_VLAN | OFPFW_DL_VLAN_PCP;
- rule->flow.dl_vlan = htons(0);
- rule->flow.dl_vlan_pcp = 0;
- return true;