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correct WMM packet classification:

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o use TID_TO_WME_AC on vlan tag priority
o ignore ECN bits in DSCP when mapping IP TOS and use TID_TO_WME_AC

MFC after:	3 days
This commit is contained in:
Sam Leffler 2007-11-23 06:24:57 +00:00
parent ce8977dff3
commit f4558c9a6f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=173867
1 changed files with 9 additions and 40 deletions
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49
sys/net80211/ieee80211_output.c
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@ -426,53 +426,22 @@ ieee80211_classify(struct ieee80211com *ic, struct mbuf *m, struct ieee80211_nod
return 1;
}
/* map vlan priority to AC */
switch (EVL_PRIOFTAG(ni->ni_vlan)) {
case 1:
case 2:
v_wme_ac = WME_AC_BK;
break;
case 0:
case 3:
v_wme_ac = WME_AC_BE;
break;
case 4:
case 5:
v_wme_ac = WME_AC_VI;
break;
case 6:
case 7:
v_wme_ac = WME_AC_VO;
break;
}
v_wme_ac = TID_TO_WME_AC(EVL_PRIOFTAG(ni->ni_vlan));
}
#ifdef INET
eh = mtod(m, struct ether_header *);
if (eh->ether_type == htons(ETHERTYPE_IP)) {
const struct ip *ip = (struct ip *)
(mtod(m, uint8_t *) + sizeof (*eh));
uint8_t tos;
/*
* IP frame, map the TOS field.
* IP frame, map the DSCP bits from the TOS field.
*/
switch (ip->ip_tos) {
case 0x08:
case 0x20:
d_wme_ac = WME_AC_BK; /* background */
break;
case 0x28:
case 0xa0:
d_wme_ac = WME_AC_VI; /* video */
break;
case 0x30: /* voice */
case 0xe0:
case 0x88: /* XXX UPSD */
case 0xb8:
d_wme_ac = WME_AC_VO;
break;
default:
d_wme_ac = WME_AC_BE;
break;
}
/* XXX m_copydata may be too slow for fast path */
/* NB: ip header may not be in first mbuf */
m_copydata(m, sizeof(struct ether_header) +
offsetof(struct ip, ip_tos), sizeof(tos), &tos);
tos >>= 5; /* NB: ECN + low 3 bits of DSCP */
d_wme_ac = TID_TO_WME_AC(tos);
} else {
#endif /* INET */
d_wme_ac = WME_AC_BE;