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sizeof(struct llc) includes padding on arm; use LLC_SNAPFRAMELEN for now

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Submitted by:	jhay
MFC after:	2 weeks
This commit is contained in:
Sam Leffler 2006-12-01 05:48:35 +00:00
parent d2d67b956c
commit 8c86f43df4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=164782
2 changed files with 4 additions and 4 deletions
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2
sys/net80211/ieee80211_input.c
View File

@ -746,7 +746,7 @@ ieee80211_decap(struct ieee80211com *ic, struct mbuf *m, int hdrlen)
if (llc->llc_dsap == LLC_SNAP_LSAP && llc->llc_ssap == LLC_SNAP_LSAP &&
llc->llc_control == LLC_UI && llc->llc_snap.org_code[0] == 0 &&
llc->llc_snap.org_code[1] == 0 && llc->llc_snap.org_code[2] == 0) {
m_adj(m, hdrlen + sizeof(struct llc) - sizeof(*eh));
m_adj(m, hdrlen + LLC_SNAPFRAMELEN - sizeof(*eh));
llc = NULL;
} else {
m_adj(m, hdrlen - sizeof(*eh));

6
sys/net80211/ieee80211_output.c
View File

@ -500,7 +500,7 @@ static struct mbuf *
ieee80211_mbuf_adjust(struct ieee80211com *ic, int hdrsize,
struct ieee80211_key *key, struct mbuf *m)
{
#define TO_BE_RECLAIMED (sizeof(struct ether_header) - sizeof(struct llc))
#define TO_BE_RECLAIMED (sizeof(struct ether_header) - LLC_SNAPFRAMELEN)
int needed_space = hdrsize;
if (key != NULL) {
@ -527,7 +527,7 @@ ieee80211_mbuf_adjust(struct ieee80211com *ic, int hdrsize,
* We know we are called just before stripping an Ethernet
* header and prepending an LLC header. This means we know
* there will be
* sizeof(struct ether_header) - sizeof(struct llc)
* sizeof(struct ether_header) - LLC_SNAPFRAMELEN
* bytes recovered to which we need additional space for the
* 802.11 header and any crypto header.
*/
@ -675,7 +675,7 @@ ieee80211_encap(struct ieee80211com *ic, struct mbuf *m,
}
/* NB: this could be optimized because of ieee80211_mbuf_adjust */
m_adj(m, sizeof(struct ether_header) - sizeof(struct llc));
m_adj(m, sizeof(struct ether_header) - LLC_SNAPFRAMELEN);
llc = mtod(m, struct llc *);
llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP;
llc->llc_control = LLC_UI;