network1

unikernel-demo/Makefile

@@ -1,6 +0,0 @@
-export ukl-obj-m := fs1.o
-    
-all:
-	$(MAKE) -C ../whiterose/ UKL=$(PWD) bzImage
-qemu:
-	qemu-system-x86_64 -enable-kvm -m 1G -s -kernel ../whiterose/arch/x86/boot/bzImage -append "console=ttyS0 ukl quiet" -nographic

unikernel-demo/fs1/Makefile

@@ -0,0 +1,9 @@
+export ukl-obj-m := main.o
+    
+all:
+	$(MAKE) -C ../../whiterose/ UKL=$(PWD) bzImage
+
+qemu:
+	qemu-system-x86_64 -enable-kvm -s -m 1G -nographic -cpu host\
+	       	-kernel ../whiterose/arch/x86/boot/bzImage\
+		-append "console=ttyS0 ukl quiet"\

unikernel-demo/network1/Makefile

@@ -0,0 +1,26 @@
+PACKAGES = bash coreutils iputils net-tools strace util-linux iproute pciutils 
+TARGET = min-initrd.d
+SMD = supermin.d
+bzImage = ../../whiterose/x86/boot/bzImage
+
+export ukl-obj-m := main.o
+    
+all: $(target)/root
+	$(MAKE) -C ../../whiterose/ UKL=$(PWD) bzImage
+
+supermin.d/packages:
+	supermin --prepare $(PACKAGES) -o $(SMD)
+
+supermin.d/init.tar.gz: init
+	tar zcf $@ $^
+
+$(TARGET)/root: supermin.d/packages supermin.d/init.tar.gz 
+	supermin --build -v -v -v --size 8G --if-newer --format ext2 supermin.d -o ${@D}
+
+qemu:
+	qemu-system-x86_64 -enable-kvm -s -m 1G -nographic -cpu host\
+	       	-kernel $(bzImage)\
+		-initrd min-initrd.d/initrd\
+		-hda min-initrd.d/root\
+		-append "console=ttyS0 ukl quiet"\
+	       	--device  virtio-net,netdev=usernet -netdev user,id=usernet,hostfwd=tcp::5555-:5555

unikernel-demo/network1/main.c

@@ -0,0 +1,49 @@
+// https://github.com/mafintosh/echo-servers.c/blob/master/tcp-echo-server.c
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <unistd.h> 
+#include <netinet/in.h> 
+
+#define BUFFER_SIZE 1024
+
+int main(int argc, char *argv[]) {
+
+  int port = 5555;
+
+  int server_fd, client_fd, err;
+  struct sockaddr_in server, client;
+  char buf[BUFFER_SIZE];
+
+  server_fd = socket(AF_INET, SOCK_STREAM, 0); // ukl_socket
+
+  server.sin_family = AF_INET;
+  server.sin_port = __builtin_bswap16 (port);
+  server.sin_addr.s_addr = (uint32_t) 0x00000000;
+
+  int opt_val = 1;
+  setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &opt_val, sizeof opt_val); // ukl_
+
+  err = bind(server_fd, (struct sockaddr *) &server, sizeof(server));
+
+  err = listen(server_fd, 128);
+
+  while (1) {
+    socklen_t client_len = sizeof(client);
+    client_fd = accept(server_fd, (struct sockaddr *) &client, &client_len); // ukl_accept
+
+    while (1) {
+      int read = recv(client_fd, buf, BUFFER_SIZE, 0); //  (recvfrom, fd, buf, len, flags, NULL, NULL);
+
+      if (!read) break;
+
+      err = send(client_fd, buf, read, 0); // (sendto, fd, buf, len, flags, NULL, 0);
+
+    }
+  }
+
+  return 0;
+}