svn commit: r192866 - projects/mesh11s/sys/net80211

[Rui Paulo]

Author: rpaulo
Date: Wed May 27 00:20:33 2009
New Revision: 192866
URL: http://svn.freebsd.org/changeset/base/192866

Log:
  Initial handling of PREPs.
  
  Sponsored by:	The FreeBSD Foundation

Modified:
  projects/mesh11s/sys/net80211/ieee80211_hwmp.c

Modified: projects/mesh11s/sys/net80211/ieee80211_hwmp.c
==============================================================================
--- projects/mesh11s/sys/net80211/ieee80211_hwmp.c	Wed May 27 00:06:19 2009	(r192865)
+++ projects/mesh11s/sys/net80211/ieee80211_hwmp.c	Wed May 27 00:20:33 2009	(r192866)
@@ -295,10 +295,8 @@ hwmp_recv_preq(struct ieee80211vap *vap,
 		/* XXX */
 		prep.prep_origseq = 1;
 		vargs.ptrarg = &prep;
-		ieee80211_send_action(ni,
-		    IEEE80211_ACTION_CAT_MESHPATH,
-		    IEEE80211_ACTION_MESHPATH_REP,
-		    vargs);
+		ieee80211_send_action(ni, IEEE80211_ACTION_CAT_MESHPATH,
+		    IEEE80211_ACTION_MESHPATH_REP, vargs);
 		return;
 	}
 
@@ -339,6 +337,55 @@ static void
 hwmp_recv_prep(struct ieee80211vap *vap, struct ieee80211_node *ni,
     const struct ieee80211_meshprep_ie *prep)
 {
+	union ieee80211_send_action_args vargs;                 
+
+	/*
+	 * Acceptance criteria: if the PREP was not generated by us and
+	 * forwarding is disabled, discard this PREP.
+	 */
+	if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, prep->prep_origaddr) &&
+	    !ieee80211_mesh_forwarding)
+		return;
+
+	/*
+	 * Step 1: Update the Forwarding Information.
+	 */
+
+	/*
+	 * Step 2: If it's NOT for us, propagate the PREP if TTL is
+	 * greater than 1.
+	 */
+	if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, prep->prep_targetaddr) &&
+	    prep->prep_ttl > 1) {
+		struct ieee80211_meshprep_ie pprep; /* propagated PREP */
+
+		memcpy(&pprep, prep, sizeof(pprep));
+		pprep.prep_hopcount += 1;
+		pprep.prep_ttl -= 1;
+		pprep.prep_metric += ieee80211_airtime_calc(vap, ni);
+		IEEE80211_ADDR_COPY(pprep.prep_origaddr, vap->iv_myaddr);
+		pprep.prep_origseq = 1; /* XXX */
+
+		vargs.ptrarg = &pprep;
+		ieee80211_send_action(ni, IEEE80211_ACTION_CAT_MESHPATH,
+		    IEEE80211_ACTION_MESHPATH_REQ, vargs);
+
+		/*
+		 * XXX: Step 5: update the precursor list.
+		 */
+		return;
+	}
+
+	/*
+	 * XXX: Step 3: If it's for us and the AE bit is set, update the
+	 * proxy information table.
+	 */
+
+	/*
+	 * XXX: Step 4: If it's NOT for us and the AE bit is set,
+	 * update the proxy information table.
+	 */
+
 
 }