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Enable the following function pointers:
* ndo_open
* ndo_stop
* ndo_start_xmit
* ndo_set_rx_mode
* ndo_validate_addr
* ndo_set_mac_address
* ndo_change_mtu
* ndo_tx_timeout
* ndo_set_tx_maxrate
* ndo_get_stats64

Add missing dev_addr_add function as well. Remove VLAN features from ixgbe (to
be explored in the future)
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

In the native kernel, usleep_range leans on the hrtimer interface. As we don't
have any timer support inside LCDs, make this api perform an udelay instead.
Both usleep_range and msleep needs to be fixed in the future
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Pass dma_mask and other ref pointer as well
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

As dma support is added to liblcd, remove the old stubs
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Just bring in the normal nommu_ops for now which uses scatterlists for sg dma.
Kernel uses SWIOTLB by default if no iommu= option is specified in the command
line for x86_64 systems. Bring in SWIOTLB as well when it is absolutely
necessary.
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Define helpers for __get_free_page(s) and free_page(s)
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Also remove spin_unlock_restore stub
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Some options are not supported by the LCD driver as of now, such as IOV, DMA,
DCA, DCB. #ifdef all those functions.
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

checksum and DQL (dynamic queue limits) are used by ixgbe driver. Add this to
liblcd as this may be used by other modules too in the future.
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

A module parameter is added to the KLCD module, which is exposed by the kernel
in sysfs. The dispatch loop monitors for a change in this variable and sends a
message to LCD to exit, thereby paving way for LCD to gracefully exit.
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

msleep is just a wrapper around udelay, which is a tight loop. msleep must be
replaced with a real timer in the future
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

A detailed list of functions supported
* register_netdev
* ether_setup
* eth_mac_addr
* eth_validate_addr
* free_netdev
* netif_carrier_off
* netif_carrier_on
* netif_device_attach
* netif_device_detach
* netif_set_real_num_rx_queues
* netif_set_real_num_tx_queues
* consume_skb
* unregister_netdev
* eth_platform_get_mac_address
* dev_addr_del
* device_set_wakeup_enable
* eth_get_headlen
* netif_tx_stop_all_queues
* pci_disable_pcie_error_reporting
* pci_bus_read_config_word
* pci_bus_write_config_word
* pci_cleanup_aer_uncorrect_error_status
* pci_disable_device
* pci_disable_msi
* pci_disable_msix
* pci_enable_msix_range
* pci_enable_msi_range
* pci_enable_pcie_error_reporting
* pcie_capability_read_word
* pcie_get_minimum_link
* pci_enable_device_mem
* pci_request_selected_regions
* pci_request_selected_regions_exclusive
* pci_set_master
* pci_save_state
* pci_restore_state
* pci_prepare_to_sleep
* pci_set_power_state
* pci_release_selected_regions
* pci_select_bars
* pci_wake_from_d3
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Replace
* dev_{warn,err,info,crit} with LIBLCD variants.
* v{m,z}alloc with kmalloc for now as vmalloc is not fully supported in the liblcd
implementation.
* {alloc,free}_pages with lcd variants

Mask functions that won't be used with LCD driver (for instance irq related
stuff). Add stubs for other functions that are unlikely to be RPC-ed or pulled
in.
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Add the original driver, stripping all the files that are not necessary for our
82599 hardware.  Also remove (#ifdef) unneeded fancy features such as SRIOV,
PTP, HWMON, DEBUGFS, DCA, DCB. Compiles fine. There are unresolved symbols
though.
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

PCI bar regions are accessed by corresponding drivers. ixgbe accesses only BAR0
region. Map this into the lcd using lcd_ioremap.
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Instead of using naive schedule() that hogs the cpu, use a wait queue and wake
up the thread when someone pulls the plug.
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Add support for remove function pointer and alloc_etherdev_mqs rpc. Also add
appropriate support in the cap for insertion/removal of newly introduced
containers.
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

struct net_device is wrapped inside a container for the sake of LCDs. To
facilitate this, allocate memory for net_device_container instead of
net_device. Alter the api for accessing private area of net_device struct
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Populate boot, lcd, klcd modules of ixgbe and add a minimal ixgbe_main.c file
which tries to do pci_register_driver during load and unregister during exit.
Functions supported:
  * probe
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Update build scripts to build ixgbe test_module as well
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

oh! no. not again!
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

This script creates a tree structure with the necessary files for an LCD
module.
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

   -- Needed to move ASYNC macro inside loop in pmfs dispatch loop
   -- Add pre_hook.h and post_hook.h headers to pmfs source files
   -- Fix get_current to return current_task global in liblcd/resolve.c,
      rather than use %gs percpu variable (was causing page fault)

Switching gears for a moment to fix some things in libasync.

ioremap_cache and friends just assume the memory is already
mapped in the address spaces, and does a phys -> virt translation.

request/release memory regions is a no-op inside the LCD. The
non-isolated glue for mount will need to invoke these functions.

unregister fs does a synchronize_rcu, which basically waits
for all cpu's to enter a "quiescent" state. The PMFS LCD thread
was never yielding as it waited for the response, so we had a
deadlock. I just needed to move cond_resched into the right place
in microkernel/run.c.

Kmalloc memory is not executable by default.

I also needed to make the maximum size ram map allocation bigger
in order to map 2 GBs.