Run tests in Travis CI

.travis.yml

@@ -0,0 +1,11 @@
+language: c
+compiler:
+  - gcc
+
+before_install: "sudo apt-get update && sudo apt-get install -y linux-libc-dev"
+
+script:
+  - make && cd src && sudo make test_ci;
+
+after_script:
+  - ls testlog/* | xargs -l1 cat;

src/apps/vhost/vhost.lua

@@ -3,6 +3,7 @@ module(...,package.seeall)
 local ffi = require("ffi")
 local C = ffi.C
 
+local lib    = require("core.lib")
 local freelist = require("core.freelist")
 local memory   = require("core.memory")
 local buffer   = require("core.buffer")
@@ -15,6 +16,10 @@ local packet   = require("core.packet")
 vring_size = C.VHOST_VRING_SIZE
 uint64_t = ffi.typeof("uint64_t")
 
+function is_tuntap_available()
+  return lib.can_write("/dev/net/tun")
+end
+
 function new (tapname)
    local vhost = ffi.new("struct vhost")
    local dev = { vhost = vhost,

src/apps/vhost/vhost_apps.lua

@@ -40,6 +40,11 @@ function TapVhost:push ()
 end
 
 function selftest ()
+   if not vhost.is_tuntap_available() then
+      print("/dev/net/tun absent or not avaiable\nTest skipped")
+      os.exit(app.test_skipped_code)
+   end
+
    local c = config.new()
    config.app(c, "source", basic_apps.Source)
    config.app(c, "tapvhost", TapVhost, "snabb%d")

src/core/memory.lua

@@ -72,7 +72,7 @@ function get_huge_page_size ()
    local _,_,hugesize = meminfo:find("Hugepagesize: +([0-9]+) kB")
    return hugesize
       and tonumber(hugesize) * 1024
-       or 2048 -- A typical x86 system will have a Huge Page Size of 2048 kBytes
+       or base_page_size -- use base page size as default value
 end
 
 base_page_size = 4096
@@ -122,7 +122,7 @@ function set_use_physical_memory()
 end
 
 function set_default_allocator(use_hugetlb)
-    if use_hugetlb then
+    if use_hugetlb and lib.can_write("/proc/sys/vm/nr_hugepages") then
         allocate_RAM = function(size)
             for i =1, 3 do
                 local page = C.allocate_huge_page(size)