Changeset 1856

Timestamp:

12/14/06 02:38:00 (2 years ago)

Author:

scottr

Message:

This patch implementing user control of the short/long preamble via iwpriv ioctl.
By default as before is the short preamble option on.

Usage:
iwpriv wlan0 shpreamble 1 (enable short preamble) (default)
iwpriv wlan0 shpreamble 0 (disable short preamble)
iwpriv wlan0 get_shpreamble (return curret value)

Note:
Preamble can be controlled for for 802.11b/g. 802.11a do not implement it.
Short preamble is a capability option, so when its turned off at accesspoint,
any stations capable to use short preamble will use long preamble. When
is accesspoint capable to use short preamble and station not, ap and station
will use long preamble. Outdoor with poor signal condition is better to use
long preamble.

Signed-off-by: Jiri Fojtasek <jiri.fojtasek@hlohovec.net>

Files:

• trunk/net80211/ieee80211_input.c (modified) (2 diffs)
• trunk/net80211/ieee80211_ioctl.h (modified) (1 diff)
• trunk/net80211/ieee80211_node.c (modified) (1 diff)
• trunk/net80211/ieee80211_wireless.c (modified) (3 diffs)

trunk/net80211/ieee80211_input.c

@@ -3472 +3472 @@
-                 */
-                if (IEEE80211_IS_CHAN_A(ic->ic_curchan) ||
-
+
+
-                        ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
-                        ic->ic_flags &= ~IEEE80211_F_USEBARKER;
@@ -3497 +3498 @@
-                        "%sassoc success: %s preamble, %s slot time%s%s%s%s%s%s%s",
-                        ISREASSOC(subtype) ? "re" : "",
-
+
+
-                        ic->ic_flags&IEEE80211_F_SHSLOT ? "short" : "long",
-                        ic->ic_flags&IEEE80211_F_USEPROT ? ", protection" : "",

trunk/net80211/ieee80211_ioctl.h

@@ -599 +599 @@
-        IEEE80211_PARAM_REGCLASS        = 59,   /* enable regclass ids in country IE */
-        IEEE80211_PARAM_DROPUNENC_EAPOL = 60,   /* drop unencrypted eapol frames */
+        IEEE80211_PARAM_SHPREAMBLE      = 61,   /* Short Preamble */
-};
-

trunk/net80211/ieee80211_node.c

@@ -1846 +1846 @@
-                newassoc ? "" : "re",
-                IEEE80211_NODE_AID(ni),
-
+
+
-                ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long",
-                ic->ic_flags & IEEE80211_F_USEPROT ? ", protection" : "",

trunk/net80211/ieee80211_wireless.c

@@ -2377 +2377 @@
-                retv = ENETRESET;       /* XXX: need something this drastic? */
-                break;
+        case IEEE80211_PARAM_SHPREAMBLE:
+                if (value) {
+                        ic->ic_caps |= IEEE80211_C_SHPREAMBLE;
+                        ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
+                        ic->ic_flags &= ~IEEE80211_F_USEBARKER;
+                } else {
+                        ic->ic_caps &= ~IEEE80211_C_SHPREAMBLE;
+                        ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
+                        ic->ic_flags |= IEEE80211_F_USEBARKER;
+                }       
+                retv = ENETRESET;       /* requires restart */
+                break;
-        case IEEE80211_PARAM_PWRTARGET:
-                ic->ic_curchanmaxpwr = value;
@@ -2772 +2784 @@
-        case IEEE80211_PARAM_DOTH:
-                param[0] = (ic->ic_flags & IEEE80211_F_DOTH) != 0;
+                break;
+        case IEEE80211_PARAM_SHPREAMBLE:
+                param[0] = (ic->ic_caps & IEEE80211_C_SHPREAMBLE) != 0;
-                break;
-        case IEEE80211_PARAM_PWRTARGET:
@@ -5087 +5102 @@
-        { IEEE80211_PARAM_DROPUNENC_EAPOL,
-          0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_dropunencea" },
+        { IEEE80211_PARAM_SHPREAMBLE,
+          IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "shpreamble" },
+        { IEEE80211_PARAM_SHPREAMBLE,
+          0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_shpreamble" },
-        /*
-         * NB: these should be roamrssi* etc, but iwpriv usurps all