diff options
Diffstat (limited to 'runsc')
| -rw-r--r-- | runsc/boot/config.go | 9 | ||||
| -rw-r--r-- | runsc/boot/filter/config.go | 9 | ||||
| -rw-r--r-- | runsc/boot/network.go | 14 | ||||
| -rw-r--r-- | runsc/main.go | 6 | ||||
| -rw-r--r-- | runsc/sandbox/BUILD | 1 | ||||
| -rw-r--r-- | runsc/sandbox/network.go | 12 |
6 files changed, 38 insertions, 13 deletions
diff --git a/runsc/boot/config.go b/runsc/boot/config.go index 01a29e8d5..72a33534f 100644 --- a/runsc/boot/config.go +++ b/runsc/boot/config.go @@ -178,8 +178,11 @@ type Config struct { // capabilities. EnableRaw bool - // GSO indicates that generic segmentation offload is enabled. - GSO bool + // HardwareGSO indicates that hardware segmentation offload is enabled. + HardwareGSO bool + + // SoftwareGSO indicates that software segmentation offload is enabled. + SoftwareGSO bool // LogPackets indicates that all network packets should be logged. LogPackets bool @@ -275,6 +278,8 @@ func (c *Config) ToFlags() []string { "--rootless=" + strconv.FormatBool(c.Rootless), "--alsologtostderr=" + strconv.FormatBool(c.AlsoLogToStderr), "--ref-leak-mode=" + refsLeakModeToString(c.ReferenceLeakMode), + "--gso=" + strconv.FormatBool(c.HardwareGSO), + "--software-gso=" + strconv.FormatBool(c.SoftwareGSO), "--overlayfs-stale-read=" + strconv.FormatBool(c.OverlayfsStaleRead), } // Only include these if set since it is never to be used by users. diff --git a/runsc/boot/filter/config.go b/runsc/boot/filter/config.go index efbf1fd4a..5ad108261 100644 --- a/runsc/boot/filter/config.go +++ b/runsc/boot/filter/config.go @@ -243,6 +243,15 @@ var allowedSyscalls = seccomp.SyscallRules{ seccomp.AllowValue(0), }, }, + unix.SYS_SENDMMSG: []seccomp.Rule{ + { + seccomp.AllowAny{}, + seccomp.AllowAny{}, + seccomp.AllowAny{}, + seccomp.AllowValue(syscall.MSG_DONTWAIT), + seccomp.AllowValue(0), + }, + }, syscall.SYS_RESTART_SYSCALL: {}, syscall.SYS_RT_SIGACTION: {}, syscall.SYS_RT_SIGPROCMASK: {}, diff --git a/runsc/boot/network.go b/runsc/boot/network.go index 32cba5ac1..f98c5fd36 100644 --- a/runsc/boot/network.go +++ b/runsc/boot/network.go @@ -50,12 +50,13 @@ type DefaultRoute struct { // FDBasedLink configures an fd-based link. type FDBasedLink struct { - Name string - MTU int - Addresses []net.IP - Routes []Route - GSOMaxSize uint32 - LinkAddress net.HardwareAddr + Name string + MTU int + Addresses []net.IP + Routes []Route + GSOMaxSize uint32 + SoftwareGSOEnabled bool + LinkAddress net.HardwareAddr // NumChannels controls how many underlying FD's are to be used to // create this endpoint. @@ -163,6 +164,7 @@ func (n *Network) CreateLinksAndRoutes(args *CreateLinksAndRoutesArgs, _ *struct Address: mac, PacketDispatchMode: fdbased.RecvMMsg, GSOMaxSize: link.GSOMaxSize, + SoftwareGSOEnabled: link.SoftwareGSOEnabled, RXChecksumOffload: true, }) if err != nil { diff --git a/runsc/main.go b/runsc/main.go index 80b2d300c..ae906c661 100644 --- a/runsc/main.go +++ b/runsc/main.go @@ -66,7 +66,8 @@ var ( // Flags that control sandbox runtime behavior. platformName = flag.String("platform", "ptrace", "specifies which platform to use: ptrace (default), kvm.") network = flag.String("network", "sandbox", "specifies which network to use: sandbox (default), host, none. Using network inside the sandbox is more secure because it's isolated from the host network.") - gso = flag.Bool("gso", true, "enable generic segmenation offload.") + hardwareGSO = flag.Bool("gso", true, "enable hardware segmentation offload if it is supported by a network device.") + softwareGSO = flag.Bool("software-gso", true, "enable software segmentation offload when hardware ofload can't be enabled.") fileAccess = flag.String("file-access", "exclusive", "specifies which filesystem to use for the root mount: exclusive (default), shared. Volume mounts are always shared.") fsGoferHostUDS = flag.Bool("fsgofer-host-uds", false, "allow the gofer to mount Unix Domain Sockets.") overlay = flag.Bool("overlay", false, "wrap filesystem mounts with writable overlay. All modifications are stored in memory inside the sandbox.") @@ -200,7 +201,8 @@ func main() { FSGoferHostUDS: *fsGoferHostUDS, Overlay: *overlay, Network: netType, - GSO: *gso, + HardwareGSO: *hardwareGSO, + SoftwareGSO: *softwareGSO, LogPackets: *logPackets, Platform: platformType, Strace: *strace, diff --git a/runsc/sandbox/BUILD b/runsc/sandbox/BUILD index 7fdceaab6..27459e6d1 100644 --- a/runsc/sandbox/BUILD +++ b/runsc/sandbox/BUILD @@ -19,6 +19,7 @@ go_library( "//pkg/log", "//pkg/sentry/control", "//pkg/sentry/platform", + "//pkg/tcpip/stack", "//pkg/urpc", "//runsc/boot", "//runsc/boot/platforms", diff --git a/runsc/sandbox/network.go b/runsc/sandbox/network.go index 5634f0707..d42de0176 100644 --- a/runsc/sandbox/network.go +++ b/runsc/sandbox/network.go @@ -28,6 +28,7 @@ import ( "github.com/vishvananda/netlink" "golang.org/x/sys/unix" "gvisor.dev/gvisor/pkg/log" + "gvisor.dev/gvisor/pkg/tcpip/stack" "gvisor.dev/gvisor/pkg/urpc" "gvisor.dev/gvisor/runsc/boot" "gvisor.dev/gvisor/runsc/specutils" @@ -61,7 +62,7 @@ func setupNetwork(conn *urpc.Client, pid int, spec *specs.Spec, conf *boot.Confi // Build the path to the net namespace of the sandbox process. // This is what we will copy. nsPath := filepath.Join("/proc", strconv.Itoa(pid), "ns/net") - if err := createInterfacesAndRoutesFromNS(conn, nsPath, conf.GSO, conf.NumNetworkChannels); err != nil { + if err := createInterfacesAndRoutesFromNS(conn, nsPath, conf.HardwareGSO, conf.SoftwareGSO, conf.NumNetworkChannels); err != nil { return fmt.Errorf("creating interfaces from net namespace %q: %v", nsPath, err) } case boot.NetworkHost: @@ -136,7 +137,7 @@ func isRootNS() (bool, error) { // createInterfacesAndRoutesFromNS scrapes the interface and routes from the // net namespace with the given path, creates them in the sandbox, and removes // them from the host. -func createInterfacesAndRoutesFromNS(conn *urpc.Client, nsPath string, enableGSO bool, numNetworkChannels int) error { +func createInterfacesAndRoutesFromNS(conn *urpc.Client, nsPath string, hardwareGSO bool, softwareGSO bool, numNetworkChannels int) error { // Join the network namespace that we will be copying. restore, err := joinNetNS(nsPath) if err != nil { @@ -232,7 +233,7 @@ func createInterfacesAndRoutesFromNS(conn *urpc.Client, nsPath string, enableGSO // Create the socket for the device. for i := 0; i < link.NumChannels; i++ { log.Debugf("Creating Channel %d", i) - socketEntry, err := createSocket(iface, ifaceLink, enableGSO) + socketEntry, err := createSocket(iface, ifaceLink, hardwareGSO) if err != nil { return fmt.Errorf("failed to createSocket for %s : %v", iface.Name, err) } @@ -246,6 +247,11 @@ func createInterfacesAndRoutesFromNS(conn *urpc.Client, nsPath string, enableGSO } args.FilePayload.Files = append(args.FilePayload.Files, socketEntry.deviceFile) } + if link.GSOMaxSize == 0 && softwareGSO { + // Hardware GSO is disabled. Let's enable software GSO. + link.GSOMaxSize = stack.SoftwareGSOMaxSize + link.SoftwareGSOEnabled = true + } // Collect the addresses for the interface, enable forwarding, // and remove them from the host. |