sentry: save inet stacks in proc files.

PiperOrigin-RevId: 204362791
Change-Id: If85ea7442741e299f0d7cddbc3d6b415e285da81

pkg/sentry/fs/proc/net.go

@@ -55,7 +55,7 @@ func (p *proc) newNetDir(ctx context.Context, msrc *fs.MountSource) *fs.Inode {
 
 // ifinet6 implements seqfile.SeqSource for /proc/net/if_inet6.
 type ifinet6 struct {
-	s inet.Stack `state:"nosave"` // S/R-FIXME
+	s inet.Stack
 }
 
 func (n *ifinet6) contents() []string {

pkg/sentry/fs/proc/sys_net.go

@@ -102,7 +102,7 @@ func (m *tcpMem) DeprecatedPwritev(ctx context.Context, src usermem.IOSequence,
 
 type tcpSack struct {
 	ramfs.Entry
-	s inet.Stack `state:"nosave"` // S/R-FIXME
+	s inet.Stack
 }
 
 func newTCPSackInode(ctx context.Context, msrc *fs.MountSource, s inet.Stack) *fs.Inode {