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-rw-r--r--net/tap-linux.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/net/tap-linux.c b/net/tap-linux.c
index f54f308d35..30fcca1bc2 100644
--- a/net/tap-linux.c
+++ b/net/tap-linux.c
@@ -237,7 +237,7 @@ int tap_fd_set_vnet_be(int fd, int is_be)
 }
 
 void tap_fd_set_offload(int fd, int csum, int tso4,
-                        int tso6, int ecn, int ufo)
+                        int tso6, int ecn, int ufo, int uso4, int uso6)
 {
     unsigned int offload = 0;
 
@@ -256,13 +256,22 @@ void tap_fd_set_offload(int fd, int csum, int tso4,
             offload |= TUN_F_TSO_ECN;
         if (ufo)
             offload |= TUN_F_UFO;
+        if (uso4) {
+            offload |= TUN_F_USO4;
+        }
+        if (uso6) {
+            offload |= TUN_F_USO6;
+        }
     }
 
     if (ioctl(fd, TUNSETOFFLOAD, offload) != 0) {
-        offload &= ~TUN_F_UFO;
+        offload &= ~(TUN_F_USO4 | TUN_F_USO6);
         if (ioctl(fd, TUNSETOFFLOAD, offload) != 0) {
-            fprintf(stderr, "TUNSETOFFLOAD ioctl() failed: %s\n",
+            offload &= ~TUN_F_UFO;
+            if (ioctl(fd, TUNSETOFFLOAD, offload) != 0) {
+                fprintf(stderr, "TUNSETOFFLOAD ioctl() failed: %s\n",
                     strerror(errno));
+            }
         }
     }
 }