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wext: Emit event stream entries correctly when compat.

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Three major portions to this change:

1) Add IW_EV_COMPAT_LCP_LEN, IW_EV_COMPAT_POINT_OFF,
   and IW_EV_COMPAT_POINT_LEN helper defines.

2) Delete iw_stream_check_add_*(), they are unused.

3) Add iw_request_info argument to iwe_stream_add_*(), and use it to
   size the event and pointer lengths correctly depending upon whether
   IW_REQUEST_FLAG_COMPAT is set or not.

4) The mechanical transformations to the drivers and wireless stack
   bits to get the iw_request_info passed down into the routines
   modified in #3.  Also, explicit references to IW_EV_LCP_LEN are
   replaced with iwe_stream_lcp_len(info).

With a lot of help and bug fixes from Masakazu Mokuno.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2008-06-16 18:50:49 -07:00
parent 0f5cabba49
commit ccc580571c
18 changed files with 351 additions and 314 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/net/wireless/airo.c
View File

@@ -7156,6 +7156,7 @@ out:
* format that the Wireless Tools will understand - Jean II
*/
static inline char *airo_translate_scan(struct net_device *dev,
struct iw_request_info *info,
char *current_ev,
char *end_buf,
BSSListRid *bss)
@@ -7172,7 +7173,8 @@ static inline char *airo_translate_scan(struct net_device *dev,
iwe.cmd = SIOCGIWAP;
iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN);
current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_ADDR_LEN);
current_ev = iwe_stream_add_event(info, current_ev, end_buf,
&iwe, IW_EV_ADDR_LEN);
/* Other entries will be displayed in the order we give them */
@@ -7182,7 +7184,8 @@ static inline char *airo_translate_scan(struct net_device *dev,
iwe.u.data.length = 32;
iwe.cmd = SIOCGIWESSID;
iwe.u.data.flags = 1;
current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, bss->ssid);
current_ev = iwe_stream_add_point(info, current_ev, end_buf,
&iwe, bss->ssid);
/* Add mode */
iwe.cmd = SIOCGIWMODE;
@@ -7192,7 +7195,8 @@ static inline char *airo_translate_scan(struct net_device *dev,
iwe.u.mode = IW_MODE_MASTER;
else
iwe.u.mode = IW_MODE_ADHOC;
current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_UINT_LEN);
current_ev = iwe_stream_add_event(info, current_ev, end_buf,
&iwe, IW_EV_UINT_LEN);
}
/* Add frequency */
@@ -7203,7 +7207,8 @@ static inline char *airo_translate_scan(struct net_device *dev,
*/
iwe.u.freq.m = frequency_list[iwe.u.freq.m - 1] * 100000;
iwe.u.freq.e = 1;
current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_FREQ_LEN);
current_ev = iwe_stream_add_event(info, current_ev, end_buf,
&iwe, IW_EV_FREQ_LEN);
dBm = le16_to_cpu(bss->dBm);
@@ -7223,7 +7228,8 @@ static inline char *airo_translate_scan(struct net_device *dev,
| IW_QUAL_DBM;
}
iwe.u.qual.noise = ai->wstats.qual.noise;
current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_QUAL_LEN);
current_ev = iwe_stream_add_event(info, current_ev, end_buf,
&iwe, IW_EV_QUAL_LEN);
/* Add encryption capability */
iwe.cmd = SIOCGIWENCODE;
@@ -7232,11 +7238,12 @@ static inline char *airo_translate_scan(struct net_device *dev,
else
iwe.u.data.flags = IW_ENCODE_DISABLED;
iwe.u.data.length = 0;
current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, bss->ssid);
current_ev = iwe_stream_add_point(info, current_ev, end_buf,
&iwe, bss->ssid);
/* Rate : stuffing multiple values in a single event require a bit
* more of magic - Jean II */
current_val = current_ev + IW_EV_LCP_LEN;
current_val = current_ev + iwe_stream_lcp_len(info);
iwe.cmd = SIOCGIWRATE;
/* Those two flags are ignored... */
@@ -7249,10 +7256,12 @@ static inline char *airo_translate_scan(struct net_device *dev,
/* Bit rate given in 500 kb/s units (+ 0x80) */
iwe.u.bitrate.value = ((bss->rates[i] & 0x7f) * 500000);
/* Add new value to event */
current_val = iwe_stream_add_value(current_ev, current_val, end_buf, &iwe, IW_EV_PARAM_LEN);
current_val = iwe_stream_add_value(info, current_ev,
current_val, end_buf,
&iwe, IW_EV_PARAM_LEN);
}
/* Check if we added any event */
if((current_val - current_ev) > IW_EV_LCP_LEN)
if ((current_val - current_ev) > iwe_stream_lcp_len(info))
current_ev = current_val;
/* Beacon interval */
@@ -7261,7 +7270,8 @@ static inline char *airo_translate_scan(struct net_device *dev,
iwe.cmd = IWEVCUSTOM;
sprintf(buf, "bcn_int=%d", bss->beaconInterval);
iwe.u.data.length = strlen(buf);
current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, buf);
current_ev = iwe_stream_add_point(info, current_ev, end_buf,
&iwe, buf);
kfree(buf);
}
@@ -7295,8 +7305,10 @@ static inline char *airo_translate_scan(struct net_device *dev,
iwe.cmd = IWEVGENIE;
iwe.u.data.length = min(info_element->len + 2,
MAX_WPA_IE_LEN);
current_ev = iwe_stream_add_point(current_ev, end_buf,
&iwe, (char *) info_element);
current_ev = iwe_stream_add_point(
info, current_ev,
end_buf, &iwe,
(char *) info_element);
}
break;
@@ -7304,8 +7316,9 @@ static inline char *airo_translate_scan(struct net_device *dev,
iwe.cmd = IWEVGENIE;
iwe.u.data.length = min(info_element->len + 2,
MAX_WPA_IE_LEN);
current_ev = iwe_stream_add_point(current_ev, end_buf,
&iwe, (char *) info_element);
current_ev = iwe_stream_add_point(
info, current_ev, end_buf,
&iwe, (char *) info_element);
break;
default:
@@ -7344,7 +7357,7 @@ static int airo_get_scan(struct net_device *dev,
list_for_each_entry (net, &ai->network_list, list) {
/* Translate to WE format this entry */
current_ev = airo_translate_scan(dev, current_ev,
current_ev = airo_translate_scan(dev, info, current_ev,
extra + dwrq->length,
&net->bss);