Porting PicoTCP WIP

kernel/syscall/ipcnetsock.c

@@ -0,0 +1,84 @@
+#include <stddef.h>
+#include <stdint.h>
+#include "syscall.h"
+#include "spinlock/spinlock.h"
+#include "ipc/netsock/netsock.h"
+#include "util/util.h"
+#include "errors.h"
+
+int32_t SYSCALL3(sys_ipc_netsockmake, net1, proto1, port1) {
+  uint16_t net = net1;
+  uint16_t proto = proto1;
+  uint16_t port = port1;
+
+  IpcNetSock *netsock = ipc_netsockmake(net, proto, port);
+
+  if (netsock == NULL) {
+    return E_NOMEMORY;
+  }
+
+  spinlock_acquire(&IPC_NETSOCKS.spinlock);
+  size_t idx = 0;
+  IpcNetSock *ns = NULL, *nstmp = NULL;
+  LL_FOREACH_SAFE_IDX(IPC_NETSOCKS.netsocks, ns, nstmp, idx) {
+    if (ns == netsock) {
+      break;
+    }
+  }
+  spinlock_release(&IPC_NETSOCKS.spinlock);
+
+  return idx;
+}
+
+int32_t SYSCALL2(sys_ipc_netsocklisten, socknum1, maxlisteners1) {
+  size_t socknum = socknum1;
+  size_t maxlisteners = maxlisteners1;
+
+  spinlock_acquire(&IPC_NETSOCKS.spinlock);
+  size_t idx = 0;
+  IpcNetSock *ns = NULL, *nstmp = NULL;
+  LL_FOREACH_SAFE_IDX(IPC_NETSOCKS.netsocks, ns, nstmp, idx) {
+    if (idx == socknum) {
+      break;
+    }
+  }
+  spinlock_release(&IPC_NETSOCKS.spinlock);
+
+  if (ns == NULL) {
+    return E_NOENTRY;
+  }
+
+  return ipc_netsocklisten(ns, maxlisteners);
+}
+
+int32_t SYSCALL1(sys_ipc_netsockpollev, socknum1) {
+  size_t socknum = socknum1;
+
+  spinlock_acquire(&IPC_NETSOCKS.spinlock);
+  size_t idx = 0;
+  IpcNetSock *ns, *nstmp;
+  LL_FOREACH_SAFE_IDX(IPC_NETSOCKS.netsocks, ns, nstmp, idx) {
+    if (idx == socknum) {
+      break;
+    }
+  }
+  spinlock_release(&IPC_NETSOCKS.spinlock);
+
+  if (ns == NULL) {
+    return E_NOENTRY;
+  }
+
+  spinlock_acquire(&ns->spinlock);
+
+  IpcNetSockEventBuffer ev;
+  bool empty = false;
+  rbuft_pop(&ns->eventbuffer, &ev, &empty);
+
+  spinlock_release(&ns->spinlock);
+
+  if (empty) {
+    return E_NOTYET;
+  }
+
+  return (int32_t)ev;
+}