Fix IXGBE driver with drop and update user with working userland networking

kernel/Cargo.lock

@@ -196,6 +196,7 @@ dependencies = [
 [[package]]
 name = "isomorphic_drivers"
 version = "0.1.0"
+source = "git+https://github.com/rcore-os/isomorphic_drivers#4a6546922bc5b1255631840f63d6b8b595b39de9"
 dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "spin 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -315,7 +316,7 @@ dependencies = [
  "console-traits 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "device_tree 1.0.3 (git+https://github.com/rcore-os/device_tree-rs)",
  "heapless 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "isomorphic_drivers 0.1.0",
+ "isomorphic_drivers 0.1.0 (git+https://github.com/rcore-os/isomorphic_drivers)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "once 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -611,6 +612,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum getopts 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)" = "0a7292d30132fb5424b354f5dc02512a86e4c516fe544bb7a25e7f266951b797"
 "checksum hash32 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "12d790435639c06a7b798af9e1e331ae245b7ef915b92f70a39b4cf8c00686af"
 "checksum heapless 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "56b960caff1a46f1fb3c1eb05f0575ac21c6248364ebebde11b11116e099881c"
+"checksum isomorphic_drivers 0.1.0 (git+https://github.com/rcore-os/isomorphic_drivers)" = "<none>"
 "checksum lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bc5729f27f159ddd61f4df6228e827e86643d4d3e7c32183cb30a1c08f604a14"
 "checksum libc 0.2.50 (registry+https://github.com/rust-lang/crates.io-index)" = "aab692d7759f5cd8c859e169db98ae5b52c924add2af5fbbca11d12fefb567c1"
 "checksum log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e19e8d5c34a3e0e2223db8e060f9e8264aeeb5c5fc64a4ee9965c062211c024b"

kernel/src/arch/x86_64/consts.rs

@@ -23,7 +23,7 @@ pub const KERNEL_SIZE: usize = PML4_SIZE;
 pub const KERNEL_HEAP_OFFSET: usize = KERNEL_OFFSET - PML4_SIZE;
 pub const KERNEL_HEAP_PML4: usize = (KERNEL_HEAP_OFFSET & PML4_MASK) / PML4_SIZE;
 /// Size of kernel heap
-pub const KERNEL_HEAP_SIZE: usize = 64 * 1024 * 1024; // 64 MB
+pub const KERNEL_HEAP_SIZE: usize = 32 * 1024 * 1024; // 32 MB
 
 pub const MEMORY_OFFSET: usize = 0;
 

kernel/src/drivers/net/ixgbe.rs

@@ -25,9 +25,9 @@ use volatile::Volatile;
 
 use crate::memory::active_table;
 use crate::net::SOCKETS;
+use crate::sync::FlagsGuard;
 use crate::sync::SpinNoIrqLock as Mutex;
 use crate::sync::{MutexGuard, SpinNoIrq};
-use crate::sync::FlagsGuard;
 use crate::HEAP_ALLOCATOR;
 
 use super::super::{provider::Provider, DeviceType, Driver, DRIVERS, NET_DRIVERS, SOCKET_ACTIVITY};
@@ -39,6 +39,21 @@ struct IXGBEDriver {
     size: usize,
 }
 
+impl Drop for IXGBEDriver {
+    fn drop(&mut self) {
+        let _ = FlagsGuard::no_irq_region();
+        let header = self.header;
+        let size = self.size;
+        if let None = active_table().get_entry(header) {
+            let mut current_addr = header;
+            while current_addr < header + size {
+                active_table().map_if_not_exists(current_addr, current_addr);
+                current_addr = current_addr + PAGE_SIZE;
+            }
+        }
+    }
+}
+
 pub struct IXGBEInterface {
     iface: Mutex<EthernetInterface<'static, 'static, 'static, IXGBEDriver>>,
     driver: IXGBEDriver,
@@ -225,7 +240,7 @@ pub fn ixgbe_init(
     let ixgbe = ixgbe::IXGBEDriver::init(Provider::new(), header, size);
     let ethernet_addr = EthernetAddress::from_bytes(&ixgbe.get_mac().as_bytes());
 
-    let net_driver = IXGBEDriver{
+    let net_driver = IXGBEDriver {
         inner: ixgbe,
         header,
         size,

user

@@ -1 +1 @@
-Subproject commit 9484651b977e75d66a56f0f99b3865e424ea8d48
+Subproject commit fae914b11b8de423d3b11f7259db03cf6cdf3d21