mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 18:47:06 +00:00
137 lines
3.4 KiB
Diff
137 lines
3.4 KiB
Diff
--- a/net80211/ieee80211_output.c
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+++ b/net80211/ieee80211_output.c
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@@ -73,6 +73,29 @@ doprint(struct ieee80211vap *vap, int su
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}
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#endif
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+static const int ieee802_1d_to_ac[8] = {
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+ WME_AC_BE, WME_AC_BK, WME_AC_BK, WME_AC_BE,
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+ WME_AC_VI, WME_AC_VI, WME_AC_VO, WME_AC_VO
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+};
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+
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+/* Given a data frame determine the 802.1p/1d tag to use. */
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+static unsigned int ieee80211_classify_ip(struct sk_buff *skb)
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+{
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+ const struct ether_header *eh = (struct ether_header *) skb->data;
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+ const struct iphdr *ip = (struct iphdr *)
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+ (skb->data + sizeof (struct ether_header));
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+ unsigned int dscp;
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+
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+ switch (skb->protocol) {
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+ case __constant_htons(ETH_P_IP):
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+ dscp = ip->tos & 0xfc;
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+ break;
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+ default:
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+ return 0;
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+ }
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+
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+ return dscp >> 5;
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+}
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/*
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* Determine the priority based on VLAN and/or IP TOS. Priority is
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@@ -83,90 +106,24 @@ static int
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ieee80211_classify(struct ieee80211_node *ni, struct sk_buff *skb)
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{
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struct ieee80211vap *vap = ni->ni_vap;
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- struct ether_header *eh = (struct ether_header *) skb->data;
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- int v_wme_ac = 0, d_wme_ac = 0;
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-
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- /* default priority */
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- skb->priority = WME_AC_BE;
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-
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- if (!(ni->ni_flags & IEEE80211_NODE_QOS))
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- return 0;
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- /*
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- * If node has a vlan tag then all traffic
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- * to it must have a matching vlan id.
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+ /* skb->priority values from 256->263 are magic values to
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+ * directly indicate a specific 802.1d priority. This is used
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+ * to allow 802.1d priority to be passed directly in from VLAN
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+ * tags, etc.
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*/
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- if (ni->ni_vlan != 0 && vlan_tx_tag_present(skb)) {
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- u_int32_t tag=0;
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- int v_pri;
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-
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- if (vap->iv_vlgrp == NULL) {
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- IEEE80211_NODE_STAT(ni, tx_novlantag);
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- ni->ni_stats.ns_tx_novlantag++;
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- return 1;
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- }
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- if (((tag = vlan_tx_tag_get(skb)) & VLAN_VID_MASK) !=
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- (ni->ni_vlan & VLAN_VID_MASK)) {
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- IEEE80211_NODE_STAT(ni, tx_vlanmismatch);
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- ni->ni_stats.ns_tx_vlanmismatch++;
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- return 1;
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- }
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- if (ni->ni_flags & IEEE80211_NODE_QOS) {
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- v_pri = (tag >> VLAN_PRI_SHIFT) & VLAN_PRI_MASK;
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- switch (v_pri) {
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- case 1:
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- case 2: /* Background (BK) */
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- v_wme_ac = WME_AC_BK;
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- break;
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- case 0:
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- case 3: /* Best Effort (BE) */
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- v_wme_ac = WME_AC_BE;
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- break;
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- case 4:
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- case 5: /* Video (VI) */
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- v_wme_ac = WME_AC_VI;
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- break;
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- case 6:
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- case 7: /* Voice (VO) */
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- v_wme_ac = WME_AC_VO;
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- break;
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- }
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- }
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+ if (skb->priority >= 256 && skb->priority <= 263) {
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+ skb->priority = ieee802_1d_to_ac[skb->priority - 256];
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+ return 0;
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}
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- if (eh->ether_type == __constant_htons(ETHERTYPE_IP)) {
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- const struct iphdr *ip = (struct iphdr *)
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- (skb->data + sizeof (struct ether_header));
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- /*
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- * IP frame, map the TOS field.
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- *
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- * XXX: fill out these mappings???
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- */
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- switch (ip->tos) {
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- case 0x08: /* Background */
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- case 0x20:
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- d_wme_ac = WME_AC_BK;
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- break;
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- case 0x28: /* Video */
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- case 0xa0:
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- d_wme_ac = WME_AC_VI;
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- break;
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- case 0x30: /* Voice */
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- case 0xe0:
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- case 0x88: /* XXX UPSD */
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- case 0xb8:
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- d_wme_ac = WME_AC_VO;
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- break;
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- default: /* All others */
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- d_wme_ac = WME_AC_BE;
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- break;
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- }
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- } else {
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- d_wme_ac = WME_AC_BE;
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+ if (!(ni->ni_flags & IEEE80211_NODE_QOS)) {
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+ /* default priority */
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+ skb->priority = WME_AC_BE;
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+ return 0;
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}
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- skb->priority = d_wme_ac;
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- if (v_wme_ac > d_wme_ac)
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- skb->priority = v_wme_ac;
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+
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+ skb->priority = ieee802_1d_to_ac[ieee80211_classify_ip(skb)];
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/* Applying ACM policy */
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if (vap->iv_opmode == IEEE80211_M_STA) {
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