Impose minimum MTU of 1280 bytes.

Some people have seen extremely low pMTU values from the kernel. Not sure why, but let's impose a lower limit for now. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> (cherry picked from commit b37161f)
sailfishos-mirror · Feb 13, 2013 · cae5178 · cae5178
1 parent 173c314
commit cae5178
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/cstp.c b/cstp.c
@@ -144,6 +144,8 @@ static void calculate_mtu(struct openconnect_info *vpninfo, int *base_mtu, int *
 		/* Default */
 		*mtu = 1406;
 	}
+	if (*mtu < 1280)
+		*mtu = 1280;
 }
 
 static int start_cstp_connection(struct openconnect_info *vpninfo)