X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=ofproto%2Ftunnel.c;h=1a39aeac31e2f256fe94fcb2a68cb490a6ca70f2;hb=abcd4402fec44a473a19cc790a9a3f00444a123f;hp=82879376dbd57cdb413c531616beef3bf366e6bc;hpb=4863c249769ac74d3e873b898114fde71145e720;p=sliver-openvswitch.git

diff --git a/ofproto/tunnel.c b/ofproto/tunnel.c
index 82879376d..1a39aeac3 100644
--- a/ofproto/tunnel.c
+++ b/ofproto/tunnel.c
@@ -30,24 +30,17 @@
 #include "tunnel.h"
 #include "vlog.h"
 
-/* XXX:
- *
- * Ability to generate actions on input for ECN
- * Ability to generate metadata for packet-outs
- * Disallow netdevs with names like "gre64_system" to prevent collisions. */
-
 VLOG_DEFINE_THIS_MODULE(tunnel);
 
-/* skb mark used for IPsec tunnel packets */
-#define IPSEC_MARK 1
-
 struct tnl_match {
     ovs_be64 in_key;
     ovs_be32 ip_src;
     ovs_be32 ip_dst;
-    uint32_t odp_port;
+    odp_port_t odp_port;
     uint32_t skb_mark;
     bool in_key_flow;
+    bool ip_src_flow;
+    bool ip_dst_flow;
 };
 
 struct tnl_port {
@@ -78,7 +71,7 @@ static void tnl_port_mod_log(const struct tnl_port *, const char *action);
 static const char *tnl_port_get_name(const struct tnl_port *);
 
 static struct tnl_port *
-tnl_port_add__(const struct ofport *ofport, uint32_t odp_port,
+tnl_port_add__(const struct ofport *ofport, odp_port_t odp_port,
                bool warn)
 {
     const struct netdev_tunnel_config *cfg;
@@ -95,6 +88,8 @@ tnl_port_add__(const struct ofport *ofport, uint32_t odp_port,
     tnl_port->match.in_key = cfg->in_key;
     tnl_port->match.ip_src = cfg->ip_src;
     tnl_port->match.ip_dst = cfg->ip_dst;
+    tnl_port->match.ip_src_flow = cfg->ip_src_flow;
+    tnl_port->match.ip_dst_flow = cfg->ip_dst_flow;
     tnl_port->match.skb_mark = cfg->ipsec ? IPSEC_MARK : 0;
     tnl_port->match.in_key_flow = cfg->in_key_flow;
     tnl_port->match.odp_port = odp_port;
@@ -123,7 +118,7 @@ tnl_port_add__(const struct ofport *ofport, uint32_t odp_port,
  * must be added before they can be used by the module. 'ofport' must be a
  * tunnel. */
 struct tnl_port *
-tnl_port_add(const struct ofport *ofport, uint32_t odp_port)
+tnl_port_add(const struct ofport *ofport, odp_port_t odp_port)
 {
     return tnl_port_add__(ofport, odp_port, true);
 }
@@ -134,7 +129,7 @@ tnl_port_add(const struct ofport *ofport, uint32_t odp_port)
  * 'ofport' and 'odp_port' should be the same as would be passed to
  * tnl_port_add(). */
 bool
-tnl_port_reconfigure(const struct ofport *ofport, uint32_t odp_port,
+tnl_port_reconfigure(const struct ofport *ofport, odp_port_t odp_port,
                      struct tnl_port **tnl_portp)
 {
     struct tnl_port *tnl_port = *tnl_portp;
@@ -164,24 +159,21 @@ tnl_port_del(struct tnl_port *tnl_port)
     }
 }
 
-/* Transforms 'flow' so that it appears to have been received by a tunnel
- * OpenFlow port controlled by this module instead of the datapath port it
- * actually came in on.  Sets 'flow''s in_port to the appropriate OpenFlow port
- * number.  Returns the 'ofport' corresponding to the new in_port.
+/* Looks in the table of tunnels for a tunnel matching the metadata in 'flow'.
+ * Returns the 'ofport' corresponding to the new in_port, or a null pointer if
+ * none is found.
  *
  * Callers should verify that 'flow' needs to be received by calling
- * tnl_port_should_receive() before this function.
- *
- * Leaves 'flow' untouched and returns null if unsuccessful. */
+ * tnl_port_should_receive() before this function. */
 const struct ofport *
-tnl_port_receive(struct flow *flow)
+tnl_port_receive(const struct flow *flow)
 {
     char *pre_flow_str = NULL;
     struct tnl_port *tnl_port;
     struct tnl_match match;
 
     memset(&match, 0, sizeof match);
-    match.odp_port = flow->in_port;
+    match.odp_port = flow->in_port.odp_port;
     match.ip_src = flow->tunnel.ip_dst;
     match.ip_dst = flow->tunnel.ip_src;
     match.in_key = flow->tunnel.tun_id;
@@ -201,10 +193,6 @@ tnl_port_receive(struct flow *flow)
         pre_flow_str = flow_to_string(flow);
     }
 
-    flow->in_port = tnl_port->ofport->ofp_port;
-    memset(&flow->tunnel, 0, sizeof flow->tunnel);
-    flow->tunnel.tun_id = match.in_key;
-
     if (pre_flow_str) {
         char *post_flow_str = flow_to_string(flow);
         char *tnl_str = tnl_port_fmt(tnl_port);
@@ -222,16 +210,17 @@ tnl_port_receive(struct flow *flow)
 
 /* Given that 'flow' should be output to the ofport corresponding to
  * 'tnl_port', updates 'flow''s tunnel headers and returns the actual datapath
- * port that the output should happen on.  May return OVSP_NONE if the output
+ * port that the output should happen on.  May return ODPP_NONE if the output
  * shouldn't occur. */
-uint32_t
-tnl_port_send(const struct tnl_port *tnl_port, struct flow *flow)
+odp_port_t
+tnl_port_send(const struct tnl_port *tnl_port, struct flow *flow,
+              struct flow_wildcards *wc)
 {
     const struct netdev_tunnel_config *cfg;
     char *pre_flow_str = NULL;
 
     if (tnl_port == &void_tnl_port) {
-        return OVSP_NONE;
+        return ODPP_NONE;
     }
 
     cfg = netdev_get_tunnel_config(tnl_port->ofport->netdev);
@@ -241,8 +230,12 @@ tnl_port_send(const struct tnl_port *tnl_port, struct flow *flow)
         pre_flow_str = flow_to_string(flow);
     }
 
-    flow->tunnel.ip_src = tnl_port->match.ip_src;
-    flow->tunnel.ip_dst = tnl_port->match.ip_dst;
+    if (!cfg->ip_src_flow) {
+        flow->tunnel.ip_src = tnl_port->match.ip_src;
+    }
+    if (!cfg->ip_dst_flow) {
+        flow->tunnel.ip_dst = tnl_port->match.ip_dst;
+    }
     flow->skb_mark = tnl_port->match.skb_mark;
 
     if (!cfg->out_key_flow) {
@@ -250,17 +243,24 @@ tnl_port_send(const struct tnl_port *tnl_port, struct flow *flow)
     }
 
     if (cfg->ttl_inherit && is_ip_any(flow)) {
+        wc->masks.nw_ttl = 0xff;
         flow->tunnel.ip_ttl = flow->nw_ttl;
     } else {
         flow->tunnel.ip_ttl = cfg->ttl;
     }
 
     if (cfg->tos_inherit && is_ip_any(flow)) {
+        wc->masks.nw_tos = 0xff;
         flow->tunnel.ip_tos = flow->nw_tos & IP_DSCP_MASK;
     } else {
         flow->tunnel.ip_tos = cfg->tos;
     }
 
+    /* ECN fields are always inherited. */
+    if (is_ip_any(flow)) {
+        wc->masks.nw_tos |= IP_ECN_MASK;
+    }
+
     if ((flow->nw_tos & IP_ECN_MASK) == IP_ECN_CE) {
         flow->tunnel.ip_tos |= IP_ECN_ECT_0;
     } else {
@@ -343,14 +343,36 @@ tnl_find(struct tnl_match *match_)
         return tnl_port;
     }
 
+    /* Flow-based remote */
+    match.ip_dst = 0;
+    match.ip_dst_flow = true;
+    tnl_port = tnl_find_exact(&match);
+    if (tnl_port) {
+        return tnl_port;
+    }
+
+    /* Flow-based everything */
+    match.ip_src = 0;
+    match.ip_src_flow = true;
+    tnl_port = tnl_find_exact(&match);
+    if (tnl_port) {
+        return tnl_port;
+    }
+
     return NULL;
 }
 
 static void
 tnl_match_fmt(const struct tnl_match *match, struct ds *ds)
 {
-    ds_put_format(ds, IP_FMT"->"IP_FMT, IP_ARGS(match->ip_src),
-                  IP_ARGS(match->ip_dst));
+    if (!match->ip_dst_flow) {
+        ds_put_format(ds, IP_FMT"->"IP_FMT, IP_ARGS(match->ip_src),
+                      IP_ARGS(match->ip_dst));
+    } else if (!match->ip_src_flow) {
+        ds_put_format(ds, IP_FMT"->flow", IP_ARGS(match->ip_src));
+    } else {
+        ds_put_cstr(ds, "flow->flow");
+    }
 
     if (match->in_key_flow) {
         ds_put_cstr(ds, ", key=flow");