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Move the monitor physical parameter struct inside ieee80211_cb. Have same struct actually be an array. Add an evil struct definition that breaks if ieee80211_cb is bigger than 48 bytes; it serves no other purpose.

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git-svn-id: http://madwifi-project.org/svn/madwifi/trunk@3615 0192ed92-7a03-0410-a25b-9323aeb14dbd
This commit is contained in:
mentor 2008-05-05 23:51:16 +00:00
parent 094374b5ee
commit f577062ef7
4 changed files with 44 additions and 50 deletions
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15
ath/if_ath.c
View File

@ -3048,8 +3048,7 @@ ath_tx_startraw(struct net_device *dev, struct ath_buf *bf, struct sk_buff *skb)
{
struct ath_softc *sc = dev->priv;
struct ath_hal *ah = sc->sc_ah;
struct ieee80211_phy_params *ph = (struct ieee80211_phy_params *)
(SKB_CB(skb) + 1); /* NB: SKB_CB casts to CB struct*. */
struct ieee80211_phy_params *ph = &(SKB_CB(skb)->phy);
const HAL_RATE_TABLE *rt;
unsigned int pktlen, hdrlen, try0, power;
HAL_PKT_TYPE atype;
@ -3060,9 +3059,9 @@ ath_tx_startraw(struct net_device *dev, struct ath_buf *bf, struct sk_buff *skb)
struct ieee80211_frame *wh;
wh = (struct ieee80211_frame *)skb->data;
try0 = ph->try0;
try0 = ph->try[0];
rt = sc->sc_currates;
txrate = dot11_to_ratecode(sc, rt, ph->rate0);
txrate = dot11_to_ratecode(sc, rt, ph->rate[0]);
power = ph->power > 60 ? 60 : ph->power;
hdrlen = ieee80211_anyhdrsize(wh);
pktlen = skb->len + IEEE80211_CRC_LEN;
@ -3113,11 +3112,11 @@ ath_tx_startraw(struct net_device *dev, struct ath_buf *bf, struct sk_buff *skb)
ATH_COMP_PROC_NO_COMP_NO_CCS /* comp scheme */
);
if (ph->try1) {
if (ph->try[1]) {
ath_hal_setupxtxdesc(sc->sc_ah, ds,
dot11_to_ratecode(sc, rt, ph->rate1), ph->try1,
dot11_to_ratecode(sc, rt, ph->rate2), ph->try2,
dot11_to_ratecode(sc, rt, ph->rate3), ph->try3
dot11_to_ratecode(sc, rt, ph->rate[1]), ph->try[1],
dot11_to_ratecode(sc, rt, ph->rate[2]), ph->try[2],
dot11_to_ratecode(sc, rt, ph->rate[3]), ph->try[3]
);
}
bf->bf_flags = flags; /* record for post-processing */

18
net80211/ieee80211_linux.h
View File

@ -388,8 +388,18 @@ typedef spinlock_t acl_lock_t;
* NB: sizeof(cb) == 48 and the vlan code grabs the first
* 8 bytes so we reserve/avoid it.
*/
struct ieee80211_cb {
u_int8_t vlan[8]; /* reserve for vlan tag info */
struct ieee80211_phy_params {
u_int8_t rate[4];
u_int8_t try[4];
u_int8_t power;
u_int32_t flags;
};
struct ieee80211_cb {
u_int8_t __reserved_vlan[8]; /* reserve for vlan tag info */
struct ieee80211_phy_params phy;
struct ieee80211_node *ni;
u_int32_t flags;
#define M_LINK0 0x01 /* frame needs WEP encryption */
@ -404,6 +414,10 @@ typedef spinlock_t acl_lock_t;
struct sk_buff *next; /* fast frame sk_buf chain */
};
struct __assert {
int __ieee80211_cb_size[sizeof(struct ieee80211_cb) <= 48 ? 0 : -1];
};
struct ieee80211com;
struct ieee80211vap;

45
net80211/ieee80211_monitor.c
View File

@ -61,7 +61,6 @@
#include <ath/if_athvar.h>
static int
ratecode_to_dot11(int ratecode)
{
@ -128,24 +127,22 @@ struct ar5212_openbsd_desc {
void
ieee80211_monitor_encap(struct ieee80211vap *vap, struct sk_buff *skb)
{
struct ieee80211_phy_params *ph = (struct ieee80211_phy_params *)
(SKB_CB(skb) + 1); /* NB: SKB_CB casts to CB struct*. */
struct ieee80211_phy_params *ph = &(SKB_CB(skb)->phy);
SKB_CB(skb)->flags = M_RAW;
SKB_NI(skb) = NULL;
SKB_CB(skb)->next = NULL;
memset(ph, 0, sizeof(struct ieee80211_phy_params));
/* send at a static rate if it is configured */
ph->rate0 = vap->iv_fixed_rate > 0 ? vap->iv_fixed_rate : 2;
ph->rate[0] = vap->iv_fixed_rate > 0 ? vap->iv_fixed_rate : 2;
/* don't retry control packets */
ph->try0 = 11;
ph->try[0] = 11;
ph->power = 60;
switch (skb->dev->type) {
case ARPHRD_IEEE80211: {
struct ieee80211_frame *wh = (struct ieee80211_frame *) skb->data;
if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL)
ph->try0 = 1;
ph->try[0] = 1;
break;
}
case ARPHRD_IEEE80211_PRISM: {
@ -156,12 +153,12 @@ ieee80211_monitor_encap(struct ieee80211vap *vap, struct sk_buff *skb)
if (skb->len > sizeof(struct wlan_ng_prism2_header) &&
p2h->msgcode == DIDmsg_lnxind_wlansniffrm &&
p2h->rate.did == DIDmsg_lnxind_wlansniffrm_rate) {
ph->rate0 = p2h->rate.data;
ph->rate[0] = p2h->rate.data;
skb_pull(skb, sizeof(struct wlan_ng_prism2_header));
}
wh = (struct ieee80211_frame *) skb->data;
if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL)
ph->try0 = 1;
ph->try[0] = 1;
break;
}
case ARPHRD_IEEE80211_RADIOTAP: {
@ -201,7 +198,7 @@ ieee80211_monitor_encap(struct ieee80211vap *vap, struct sk_buff *skb)
continue;
switch (bit) {
case IEEE80211_RADIOTAP_RATE:
ph->rate0 = *p;
ph->rate[0] = *p;
p++;
break;
@ -247,7 +244,7 @@ ieee80211_monitor_encap(struct ieee80211vap *vap, struct sk_buff *skb)
break;
case IEEE80211_RADIOTAP_DATA_RETRIES:
ph->try0 = *p + 1;
ph->try[0] = *p + 1;
p++;
break;
@ -261,9 +258,9 @@ ieee80211_monitor_encap(struct ieee80211vap *vap, struct sk_buff *skb)
/* Remove FCS from the end of frames to transmit */
skb_trim(skb, skb->len - IEEE80211_CRC_LEN);
wh = (struct ieee80211_frame *)skb->data;
if (!ph->try0 &&
if (!ph->try[0] &&
(wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL)
ph->try0 = 1;
ph->try[0] = 1;
break;
}
case ARPHRD_IEEE80211_ATHDESC: {
@ -271,14 +268,14 @@ ieee80211_monitor_encap(struct ieee80211vap *vap, struct sk_buff *skb)
struct ar5212_openbsd_desc *desc =
(struct ar5212_openbsd_desc *) (skb->data + 8);
ph->power = desc->xmit_power;
ph->rate0 = ratecode_to_dot11(desc->xmit_rate0);
ph->rate1 = ratecode_to_dot11(desc->xmit_rate1);
ph->rate2 = ratecode_to_dot11(desc->xmit_rate2);
ph->rate3 = ratecode_to_dot11(desc->xmit_rate3);
ph->try0 = desc->xmit_tries0;
ph->try1 = desc->xmit_tries1;
ph->try2 = desc->xmit_tries2;
ph->try3 = desc->xmit_tries3;
ph->rate[0] = ratecode_to_dot11(desc->xmit_rate0);
ph->rate[1] = ratecode_to_dot11(desc->xmit_rate1);
ph->rate[2] = ratecode_to_dot11(desc->xmit_rate2);
ph->rate[3] = ratecode_to_dot11(desc->xmit_rate3);
ph->try[0] = desc->xmit_tries0;
ph->try[1] = desc->xmit_tries1;
ph->try[2] = desc->xmit_tries2;
ph->try[3] = desc->xmit_tries3;
skb_pull(skb, ATHDESC_HEADER_SIZE);
}
break;
@ -287,9 +284,9 @@ ieee80211_monitor_encap(struct ieee80211vap *vap, struct sk_buff *skb)
break;
}
if (!ph->rate0) {
ph->rate0 = 0;
ph->try0 = 11;
if (!ph->rate[0]) {
ph->rate[0] = 0;
ph->try[0] = 11;
}
}
EXPORT_SYMBOL(ieee80211_monitor_encap);

16
net80211/ieee80211_monitor.h
View File

@ -47,22 +47,6 @@
A_MAX(sizeof(struct ath_tx_radiotap_header), \
A_MAX(sizeof(struct wlan_ng_prism2_header), \
ATHDESC_HEADER_SIZE)))
struct ieee80211_phy_params {
u_int8_t rate0;
u_int8_t rate1;
u_int8_t rate2;
u_int8_t rate3;
u_int8_t try0;
u_int8_t try1;
u_int8_t try2;
u_int8_t try3;
u_int8_t power;
u_int32_t flags;
};
enum {
DIDmsg_lnxind_wlansniffrm = 0x00000044,
DIDmsg_lnxind_wlansniffrm_hosttime = 0x00010044,