ofproto: As of Open Flow 1.1 switch_features has no capabilities field

In Open Flow 1.0 switch_features has a capabilities field.
However, in Open Flow 1.1, 1.2 and 1.3 this field is reserved.
Thus it should not be read on decode and it seems most appropriate
to set as zero on encode.

This patch takes the approach of setting the features field to
all available features for Open Flow 1.1+. I am unsure if it would
be sufficient to just set it to zero.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>

diff --git a/lib/ofp-print.c b/lib/ofp-print.c
index dc9fb6d..832e008 100644 (file)
--- a/lib/ofp-print.c
+++ b/lib/ofp-print.c
@@ -507,10 +507,19 @@ ofp_print_switch_features(struct ds *string, const struct ofp_header *oh)
                         ofputil_capabilities_to_name, ' ');
     ds_put_char(string, '\n');
 
-    ds_put_cstr(string, "actions: ");
-    ofp_print_bit_names(string, features.actions,
-                        ofputil_action_bitmap_to_name, ' ');
-    ds_put_char(string, '\n');
+    switch ((enum ofp_version)oh->version) {
+    case OFP10_VERSION:
+        ds_put_cstr(string, "actions: ");
+        ofp_print_bit_names(string, features.actions,
+                            ofputil_action_bitmap_to_name, ' ');
+        ds_put_char(string, '\n');
+        break;
+    case OFP11_VERSION:
+    case OFP12_VERSION:
+        break;
+    default:
+        NOT_REACHED();
+    }
 
     ofp_print_phy_ports(string, oh->version, &b);
 }

diff --git a/lib/ofp-util.c b/lib/ofp-util.c
index a943b4e..3c3513c 100644 (file)
--- a/lib/ofp-util.c
+++ b/lib/ofp-util.c
@@ -2418,7 +2418,16 @@ ofputil_decode_switch_features(const struct ofp_header *oh,
         if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) {
             features->capabilities |= OFPUTIL_C_GROUP_STATS;
         }
-        features->actions = decode_action_bits(osf->actions, of11_action_bits);
+        switch ((enum ofp_version)oh->version) {
+        case OFP11_VERSION:
+        case OFP12_VERSION:
+            features->actions = decode_action_bits(htonl(UINT32_MAX),
+                                                   of11_action_bits);
+            break;
+        case OFP10_VERSION:
+        default:
+            NOT_REACHED();
+        }
     } else {
         return OFPERR_OFPBRC_BAD_VERSION;
     }
@@ -2517,7 +2526,6 @@ ofputil_encode_switch_features(const struct ofputil_switch_features *features,
         if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
             osf->capabilities |= htonl(OFPC11_GROUP_STATS);
         }
-        osf->actions = encode_action_bits(features->actions, of11_action_bits);
         break;
     default:
         NOT_REACHED();

diff --git a/tests/ofp-print.at b/tests/ofp-print.at
index 35faaff..2146624 100644 (file)
--- a/tests/ofp-print.at
+++ b/tests/ofp-print.at
@@ -202,7 +202,6 @@ ff ff ff fe 00 00 00 00 50 54 00 00 00 01 00 00 \
 OFPT_FEATURES_REPLY (OF1.1) (xid=0x1): dpid:0000505400000001
 n_tables:2, n_buffers:256
 capabilities: FLOW_STATS TABLE_STATS PORT_STATS ARP_MATCH_IP
-actions: OUTPUT SET_VLAN_VID SET_VLAN_PCP SET_DL_SRC SET_DL_DST SET_NW_SRC SET_NW_DST SET_NW_ECN SET_NW_TOS SET_TP_SRC SET_TP_DST COPY_TTL_OUT COPY_TTL_IN SET_MPLS_LABEL SET_MPLS_TC SET_MPLS_TTL
  3(eth0): addr:50:54:00:00:00:01
      config:     0
      state:      0