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teach ieee80211_classify about ipv6 packets

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Reviewed by:	bz, rrs
This commit is contained in:
Sam Leffler 2009-06-07 22:06:15 +00:00
parent ee5cf10652
commit e755a73d19
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=193658
1 changed files with 23 additions and 1 deletions
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24
sys/net80211/ieee80211_output.c
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@ -28,6 +28,7 @@
__FBSDID("$FreeBSD$");
#include "opt_inet.h"
#include "opt_inet6.h"
#include "opt_wlan.h"
#include <sys/param.h>
@ -61,6 +62,9 @@ __FBSDID("$FreeBSD$");
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#endif
#ifdef INET6
#include <netinet/ip6.h>
#endif
#include <security/mac/mac_framework.h>
@ -730,13 +734,13 @@ ieee80211_classify(struct ieee80211_node *ni, struct mbuf *m)
v_wme_ac = TID_TO_WME_AC(EVL_PRIOFTAG(ni->ni_vlan));
}
/* XXX m_copydata may be too slow for fast path */
#ifdef INET
if (eh->ether_type == htons(ETHERTYPE_IP)) {
uint8_t tos;
/*
* IP frame, map the DSCP bits from the TOS field.
*/
/* 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);
@ -744,7 +748,25 @@ ieee80211_classify(struct ieee80211_node *ni, struct mbuf *m)
d_wme_ac = TID_TO_WME_AC(tos);
} else {
#endif /* INET */
#ifdef INET6
if (eh->ether_type == htons(ETHERTYPE_IPV6)) {
uint32_t flow;
uint8_t tos;
/*
* IPv6 frame, map the DSCP bits from the TOS field.
*/
m_copydata(m, sizeof(struct ether_header) +
offsetof(struct ip6_hdr, ip6_flow), sizeof(flow),
(caddr_t) &flow);
tos = (uint8_t)(ntohl(flow) >> 20);
tos >>= 5; /* NB: ECN + low 3 bits of DSCP */
d_wme_ac = TID_TO_WME_AC(tos);
} else {
#endif /* INET6 */
d_wme_ac = WME_AC_BE;
#ifdef INET6
}
#endif
#ifdef INET
}
#endif