X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=ofproto%2Fofproto-dpif.c;h=962df1579d1e4c85ea95aed2cc4fad8bd8e82800;hb=ce00d4982293323384f32e5a35eb3441f350d20a;hp=e3efed7d2c4755e13821423e5bdd2683ce0cae92;hpb=623e1caf2f493bfcd96e3f9381d4e89257c92798;p=openvswitch

diff --git a/ofproto/ofproto-dpif.c b/ofproto/ofproto-dpif.c
index e3efed7d..962df157 100644
--- a/ofproto/ofproto-dpif.c
+++ b/ofproto/ofproto-dpif.c
@@ -5856,47 +5856,6 @@ vlan_is_mirrored(const struct ofmirror *m, int vlan)
     return !m->vlans || bitmap_is_set(m->vlans, vlan);
 }
 
-/* Returns true if a packet with Ethernet destination MAC 'dst' may be mirrored
- * to a VLAN.  In general most packets may be mirrored but we want to drop
- * protocols that may confuse switches. */
-static bool
-eth_dst_may_rspan(const uint8_t dst[ETH_ADDR_LEN])
-{
-    /* If you change this function's behavior, please update corresponding
-     * documentation in vswitch.xml at the same time. */
-    if (dst[0] != 0x01) {
-        /* All the currently banned MACs happen to start with 01 currently, so
-         * this is a quick way to eliminate most of the good ones. */
-    } else {
-        if (eth_addr_is_reserved(dst)) {
-            /* Drop STP, IEEE pause frames, and other reserved protocols
-             * (01-80-c2-00-00-0x). */
-            return false;
-        }
-
-        if (dst[0] == 0x01 && dst[1] == 0x00 && dst[2] == 0x0c) {
-            /* Cisco OUI. */
-            if ((dst[3] & 0xfe) == 0xcc &&
-                (dst[4] & 0xfe) == 0xcc &&
-                (dst[5] & 0xfe) == 0xcc) {
-                /* Drop the following protocols plus others following the same
-                   pattern:
-
-                   CDP, VTP, DTP, PAgP  (01-00-0c-cc-cc-cc)
-                   Spanning Tree PVSTP+ (01-00-0c-cc-cc-cd)
-                   STP Uplink Fast      (01-00-0c-cd-cd-cd) */
-                return false;
-            }
-
-            if (!(dst[3] | dst[4] | dst[5])) {
-                /* Drop Inter Switch Link packets (01-00-0c-00-00-00). */
-                return false;
-            }
-        }
-    }
-    return true;
-}
-
 static void
 add_mirror_actions(struct action_xlate_ctx *ctx, const struct flow *orig_flow)
 {
@@ -5971,8 +5930,8 @@ add_mirror_actions(struct action_xlate_ctx *ctx, const struct flow *orig_flow)
         ctx->mirrors |= m->dup_mirrors;
         if (m->out) {
             output_normal(ctx, m->out, vlan);
-        } else if (eth_dst_may_rspan(orig_flow->dl_dst)
-                   && vlan != m->out_vlan) {
+        } else if (vlan != m->out_vlan
+                   && !eth_addr_is_reserved(orig_flow->dl_dst)) {
             struct ofbundle *bundle;
 
             HMAP_FOR_EACH (bundle, hmap_node, &ofproto->bundles) {
@@ -6130,7 +6089,7 @@ is_admissible(struct ofproto_dpif *ofproto, const struct flow *flow,
 
     /* Drop frames for reserved multicast addresses
      * only if forward_bpdu option is absent. */
-    if (eth_addr_is_reserved(flow->dl_dst) && !ofproto->up.forward_bpdu) {
+    if (!ofproto->up.forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) {
         return false;
     }