| 1 | --- a/net80211/ieee80211_output.c |
| 2 | +++ b/net80211/ieee80211_output.c |
| 3 | @@ -73,6 +73,29 @@ doprint(struct ieee80211vap *vap, int su |
| 4 | } |
| 5 | #endif |
| 6 | |
| 7 | +static const int ieee802_1d_to_ac[8] = { |
| 8 | + WME_AC_BE, WME_AC_BK, WME_AC_BK, WME_AC_BE, |
| 9 | + WME_AC_VI, WME_AC_VI, WME_AC_VO, WME_AC_VO |
| 10 | +}; |
| 11 | + |
| 12 | +/* Given a data frame determine the 802.1p/1d tag to use. */ |
| 13 | +static unsigned int ieee80211_classify_ip(struct sk_buff *skb) |
| 14 | +{ |
| 15 | + const struct ether_header *eh = (struct ether_header *) skb->data; |
| 16 | + const struct iphdr *ip = (struct iphdr *) |
| 17 | + (skb->data + sizeof (struct ether_header)); |
| 18 | + unsigned int dscp; |
| 19 | + |
| 20 | + switch (skb->protocol) { |
| 21 | + case __constant_htons(ETH_P_IP): |
| 22 | + dscp = ip->tos & 0xfc; |
| 23 | + break; |
| 24 | + default: |
| 25 | + return 0; |
| 26 | + } |
| 27 | + |
| 28 | + return dscp >> 5; |
| 29 | +} |
| 30 | |
| 31 | /* |
| 32 | * Determine the priority based on VLAN and/or IP TOS. Priority is |
| 33 | @@ -83,90 +106,24 @@ static int |
| 34 | ieee80211_classify(struct ieee80211_node *ni, struct sk_buff *skb) |
| 35 | { |
| 36 | struct ieee80211vap *vap = ni->ni_vap; |
| 37 | - struct ether_header *eh = (struct ether_header *) skb->data; |
| 38 | - int v_wme_ac = 0, d_wme_ac = 0; |
| 39 | |
| 40 | - /* default priority */ |
| 41 | - skb->priority = WME_AC_BE; |
| 42 | - |
| 43 | - if (!(ni->ni_flags & IEEE80211_NODE_QOS)) |
| 44 | - return 0; |
| 45 | - |
| 46 | - /* |
| 47 | - * If node has a vlan tag then all traffic |
| 48 | - * to it must have a matching vlan id. |
| 49 | + /* skb->priority values from 256->263 are magic values to |
| 50 | + * directly indicate a specific 802.1d priority. This is used |
| 51 | + * to allow 802.1d priority to be passed directly in from VLAN |
| 52 | + * tags, etc. |
| 53 | */ |
| 54 | - if (ni->ni_vlan != 0 && vlan_tx_tag_present(skb)) { |
| 55 | - u_int32_t tag=0; |
| 56 | - int v_pri; |
| 57 | - |
| 58 | - if (vap->iv_vlgrp == NULL) { |
| 59 | - IEEE80211_NODE_STAT(ni, tx_novlantag); |
| 60 | - ni->ni_stats.ns_tx_novlantag++; |
| 61 | - return 1; |
| 62 | - } |
| 63 | - if (((tag = vlan_tx_tag_get(skb)) & VLAN_VID_MASK) != |
| 64 | - (ni->ni_vlan & VLAN_VID_MASK)) { |
| 65 | - IEEE80211_NODE_STAT(ni, tx_vlanmismatch); |
| 66 | - ni->ni_stats.ns_tx_vlanmismatch++; |
| 67 | - return 1; |
| 68 | - } |
| 69 | - if (ni->ni_flags & IEEE80211_NODE_QOS) { |
| 70 | - v_pri = (tag >> VLAN_PRI_SHIFT) & VLAN_PRI_MASK; |
| 71 | - switch (v_pri) { |
| 72 | - case 1: |
| 73 | - case 2: /* Background (BK) */ |
| 74 | - v_wme_ac = WME_AC_BK; |
| 75 | - break; |
| 76 | - case 0: |
| 77 | - case 3: /* Best Effort (BE) */ |
| 78 | - v_wme_ac = WME_AC_BE; |
| 79 | - break; |
| 80 | - case 4: |
| 81 | - case 5: /* Video (VI) */ |
| 82 | - v_wme_ac = WME_AC_VI; |
| 83 | - break; |
| 84 | - case 6: |
| 85 | - case 7: /* Voice (VO) */ |
| 86 | - v_wme_ac = WME_AC_VO; |
| 87 | - break; |
| 88 | - } |
| 89 | - } |
| 90 | + if (skb->priority >= 256 && skb->priority <= 263) { |
| 91 | + skb->priority = ieee802_1d_to_ac[skb->priority - 256]; |
| 92 | + return 0; |
| 93 | } |
| 94 | |
| 95 | - if (eh->ether_type == __constant_htons(ETHERTYPE_IP)) { |
| 96 | - const struct iphdr *ip = (struct iphdr *) |
| 97 | - (skb->data + sizeof (struct ether_header)); |
| 98 | - /* |
| 99 | - * IP frame, map the TOS field. |
| 100 | - * |
| 101 | - * XXX: fill out these mappings??? |
| 102 | - */ |
| 103 | - switch (ip->tos) { |
| 104 | - case 0x08: /* Background */ |
| 105 | - case 0x20: |
| 106 | - d_wme_ac = WME_AC_BK; |
| 107 | - break; |
| 108 | - case 0x28: /* Video */ |
| 109 | - case 0xa0: |
| 110 | - d_wme_ac = WME_AC_VI; |
| 111 | - break; |
| 112 | - case 0x30: /* Voice */ |
| 113 | - case 0xe0: |
| 114 | - case 0x88: /* XXX UPSD */ |
| 115 | - case 0xb8: |
| 116 | - d_wme_ac = WME_AC_VO; |
| 117 | - break; |
| 118 | - default: /* All others */ |
| 119 | - d_wme_ac = WME_AC_BE; |
| 120 | - break; |
| 121 | - } |
| 122 | - } else { |
| 123 | - d_wme_ac = WME_AC_BE; |
| 124 | + if (!(ni->ni_flags & IEEE80211_NODE_QOS)) { |
| 125 | + /* default priority */ |
| 126 | + skb->priority = WME_AC_BE; |
| 127 | + return 0; |
| 128 | } |
| 129 | - skb->priority = d_wme_ac; |
| 130 | - if (v_wme_ac > d_wme_ac) |
| 131 | - skb->priority = v_wme_ac; |
| 132 | + |
| 133 | + skb->priority = ieee802_1d_to_ac[ieee80211_classify_ip(skb)]; |
| 134 | |
| 135 | /* Applying ACM policy */ |
| 136 | if (vap->iv_opmode == IEEE80211_M_STA) { |
| 137 | |
