From ec91e81a4fcfd7ee6bc4150f06d8740e82f808da Mon Sep 17 00:00:00 2001
From: Anton Kling <anton@kling.gg>
Date: Wed, 22 Nov 2023 21:58:30 +0100
Subject: Networking: Split network packets if they are too large
---
kernel/drivers/rtl8139.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
(limited to 'kernel/drivers/rtl8139.c')
diff --git a/kernel/drivers/rtl8139.c b/kernel/drivers/rtl8139.c
index 4b53ef4..dd81533 100644
--- a/kernel/drivers/rtl8139.c
+++ b/kernel/drivers/rtl8139.c
@@ -103,12 +103,16 @@ __attribute__((interrupt)) void rtl8139_handler(void *regs) {
EOI(0xB);
}
-int rtl8139_send_data(u8 *data, u16 data_size) {
+void rtl8139_send_data(u8 *data, u16 data_size) {
const struct PCI_DEVICE *device = &rtl8139;
// FIXME: It should block or fail if there is too little space for the
// buffer
- if (data_size > 0x1000)
- return 0;
+ if (data_size > 0x1000) {
+ rtl8139_send_data(data, 0x1000);
+ data += 0x1000;
+ data_size -= 0x1000;
+ return rtl8139_send_data(data, data_size);
+ }
if (send_buffers_loop > 3) {
send_buffers_loop = 0;
}
@@ -117,7 +121,6 @@ int rtl8139_send_data(u8 *data, u16 data_size) {
(u32)virtual_to_physical(send_buffers[send_buffers_loop], NULL));
outl(device->gen.base_mem_io + 0x10 + send_buffers_loop * 4, data_size);
send_buffers_loop += 1;
- return 1;
}
void get_mac_address(u8 mac[6]) {
--
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