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wlan: netdev operations

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Matheus
2026-09-09 22:40:04 -03:00
parent daebfd89b5
commit 36369449fa
1 changed files with 36 additions and 5 deletions
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kernel-src/io/net/wlan.c
+36 -5
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@@ -1,10 +1,13 @@
#include <kernel/wlan.h>
#include <u80211/u80211.h>
#include <kernel/net.h>
#include <kernel/eth.h>
#include <logging.h>
#include <string.h>
#include <errno.h>
#define WLAN_MTU 1500
typedef struct {
netdev_t netdev;
void *driver_handle;
@@ -13,6 +16,8 @@ typedef struct {
int id;
} wlan_device_t;
// TODO: change how netdesc_t is handled in kernel overall (?)
// TODO: map u80211 errors to errnos
// TODO: in u80211, change the device ops to take a (void *) handle
// TODO: general netdev cleanup:
// - use struct ops instead of having function pointers in netdev struct
@@ -77,16 +82,42 @@ static u80211_device_ops_t ops = {
.del_key = del_key
};
static int wlan_alloc_desc(netdev_t *netdev, size_t requestedsize, netdesc_t *desc) {
static int wlan_alloc_desc(netdev_t *netdev, size_t requested_size, netdesc_t *desc) {
wlan_device_t *wlan = (wlan_device_t *)netdev;
if (requested_size > WLAN_MTU)
return E2BIG;
u80211_tx_buffer_descriptor_t u80211_desc;
int status = u80211_allocate_tx_buffer(wlan->u80211_device, &u80211_desc);
if (status != U80211_STATUS_SUCCESS)
return EINVAL;
desc->address = u80211_desc.data;
desc->curroffset = u80211_desc.current_offset;
desc->size = u80211_desc.size;
return 0;
}
static int wlan_free_desc(netdev_t *netdev, netdesc_t *desc) {
// TODO: u80211 free descriptor call
}
static int wlan_send_packet(netdev_t *_internal, netdesc_t desc, mac_t targetmac, int proto) {
static int wlan_send_packet(netdev_t *netdev, netdesc_t desc, mac_t target, int proto) {
wlan_device_t *wlan = (wlan_device_t *)netdev;
ethframe_t *ethframe = desc.address;
ethframe->type = cpu_to_be_w(proto);
memcpy(&ethframe->source, &wlan->netdev.mac, sizeof(mac_t));
memcpy(&ethframe->destination, &target, sizeof(mac_t));
u80211_tx_buffer_descriptor_t descriptor = {
.data = desc.address,
.current_offset = desc.curroffset,
.size = desc.size
};
return u80211_transmit_buffer(wlan->u80211_device, &descriptor) == U80211_STATUS_SUCCESS ? 0 : EINVAL;
}
int wlan_register(void *handle, const u80211_drv_device_metadata_t *drv_metadata, const u80211_drv_device_ops_t *drv_ops, u80211_drv_network_device_handle_t *network_device) {
@@ -97,7 +128,7 @@ int wlan_register(void *handle, const u80211_drv_device_metadata_t *drv_metadata
wlan->driver_handle = handle;
wlan->ops = drv_ops;
wlan->netdev.mtu = 1500;
wlan->netdev.mtu = WLAN_MTU;
wlan->netdev.sendpacket = wlan_send_packet;
wlan->netdev.allocdesc = wlan_alloc_desc;
wlan->netdev.freedesc = wlan_free_desc;