datapath: Add multicast tunnel support.

[sliver-openvswitch.git] / lib / netdev-vport.c

diff --git a/lib/netdev-vport.c b/lib/netdev-vport.c
index d85d528..f6dbd03 100644 (file)
--- a/lib/netdev-vport.c
+++ b/lib/netdev-vport.c
@@ -21,6 +21,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <sys/socket.h>
+#include <linux/openvswitch.h>
 #include <linux/rtnetlink.h>
 #include <net/if.h>
 #include <sys/ioctl.h>
@@ -38,12 +39,12 @@
 #include "netlink-notifier.h"
 #include "netlink-socket.h"
 #include "ofpbuf.h"
-#include "openvswitch/datapath-protocol.h"
 #include "openvswitch/tunnel.h"
 #include "packets.h"
 #include "route-table.h"
 #include "shash.h"
 #include "socket-util.h"
+#include "unaligned.h"
 #include "vlog.h"
 
 VLOG_DEFINE_THIS_MODULE(netdev_vport);
@@ -361,22 +362,21 @@ netdev_vport_get_etheraddr(const struct netdev *netdev,
     return error;
 }
 
-#define COPY_OVS_STATS                                      \
-    dst->rx_packets = src->rx_packets;                      \
-    dst->tx_packets = src->tx_packets;                      \
-    dst->rx_bytes = src->rx_bytes;                          \
-    dst->tx_bytes = src->tx_bytes;                          \
-    dst->rx_errors = src->rx_errors;                        \
-    dst->tx_errors = src->tx_errors;                        \
-    dst->rx_dropped = src->rx_dropped;                      \
-    dst->tx_dropped = src->tx_dropped;
-
-/* Copies 'src' into 'dst', performing format conversion in the process. */
+/* Copies 'src' into 'dst', performing format conversion in the process.
+ *
+ * 'src' is allowed to be misaligned. */
 static void
 netdev_stats_from_ovs_vport_stats(struct netdev_stats *dst,
                                   const struct ovs_vport_stats *src)
 {
-    COPY_OVS_STATS
+    dst->rx_packets = get_unaligned_u64(&src->rx_packets);
+    dst->tx_packets = get_unaligned_u64(&src->tx_packets);
+    dst->rx_bytes = get_unaligned_u64(&src->rx_bytes);
+    dst->tx_bytes = get_unaligned_u64(&src->tx_bytes);
+    dst->rx_errors = get_unaligned_u64(&src->rx_errors);
+    dst->tx_errors = get_unaligned_u64(&src->tx_errors);
+    dst->rx_dropped = get_unaligned_u64(&src->rx_dropped);
+    dst->tx_dropped = get_unaligned_u64(&src->tx_dropped);
     dst->multicast = 0;
     dst->collisions = 0;
     dst->rx_length_errors = 0;
@@ -397,7 +397,14 @@ static void
 netdev_stats_to_ovs_vport_stats(struct ovs_vport_stats *dst,
                                 const struct netdev_stats *src)
 {
-    COPY_OVS_STATS
+    dst->rx_packets = src->rx_packets;
+    dst->tx_packets = src->tx_packets;
+    dst->rx_bytes = src->rx_bytes;
+    dst->tx_bytes = src->tx_bytes;
+    dst->rx_errors = src->rx_errors;
+    dst->tx_errors = src->tx_errors;
+    dst->rx_dropped = src->rx_dropped;
+    dst->tx_dropped = src->tx_dropped;
 }
 
 int
@@ -571,6 +578,7 @@ parse_tunnel_config(const char *name, const char *type,
     struct shash_node *node;
     bool ipsec_mech_set = false;
     ovs_be32 daddr = htonl(0);
+    ovs_be32 saddr = htonl(0);
     uint32_t flags;
 
     flags = TNL_F_DF_DEFAULT | TNL_F_PMTUD | TNL_F_HDR_CACHE;
@@ -596,8 +604,7 @@ parse_tunnel_config(const char *name, const char *type,
             if (lookup_ip(node->data, &in_addr)) {
                 VLOG_WARN("%s: bad %s 'local_ip'", name, type);
             } else {
-                nl_msg_put_be32(options, OVS_TUNNEL_ATTR_SRC_IPV4,
-                                in_addr.s_addr);
+                saddr = in_addr.s_addr;
             }
         } else if (!strcmp(node->name, "tos")) {
             if (!strcmp(node->data, "inherit")) {
@@ -700,6 +707,14 @@ parse_tunnel_config(const char *name, const char *type,
     }
     nl_msg_put_be32(options, OVS_TUNNEL_ATTR_DST_IPV4, daddr);
 
+    if (saddr) {
+        if (ip_is_multicast(daddr)) {
+            VLOG_WARN("%s: remote_ip is multicast, ignoring local_ip", name);
+        } else {
+            nl_msg_put_be32(options, OVS_TUNNEL_ATTR_SRC_IPV4, saddr);
+        }
+    }
+
     nl_msg_put_u32(options, OVS_TUNNEL_ATTR_FLAGS, flags);
 
     return 0;
@@ -885,8 +900,6 @@ unparse_patch_config(const char *name OVS_UNUSED, const char *type OVS_UNUSED,
     netdev_vport_open,                                      \
     netdev_vport_close,                                     \
                                                             \
-    NULL,                       /* enumerate */             \
-                                                            \
     NULL,                       /* listen */                \
     NULL,                       /* recv */                  \
     NULL,                       /* recv_wait */             \
@@ -901,6 +914,7 @@ unparse_patch_config(const char *name OVS_UNUSED, const char *type OVS_UNUSED,
     NULL,                       /* set_mtu */               \
     NULL,                       /* get_ifindex */           \
     NULL,                       /* get_carrier */           \
+    NULL,                       /* get_carrier_resets */    \
     NULL,                       /* get_miimon */            \
     netdev_vport_get_stats,                                 \
     netdev_vport_set_stats,                                 \