diff options
Diffstat (limited to 'kernel/network/ipv4.c')
| -rw-r--r-- | kernel/network/ipv4.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/network/ipv4.c b/kernel/network/ipv4.c index 69ceef7..6074141 100644 --- a/kernel/network/ipv4.c +++ b/kernel/network/ipv4.c @@ -26,6 +26,7 @@ static u16 ip_checksum(const u16 *data, u16 length) { return htons(~acc); } +u8 ipv4_buffer[0x1000]; void send_ipv4_packet(ipv4_t ip, u8 protocol, const u8 *payload, u16 length) { u16 header[10]; header[0] = (4 /*version*/ << 4) | (5 /*IHL*/); @@ -46,7 +47,8 @@ void send_ipv4_packet(ipv4_t ip, u8 protocol, const u8 *payload, u16 length) { header[5] = ip_checksum(header, 20); u16 packet_length = length + 20; - u8 *packet = kmalloc(packet_length); + assert(packet_length < sizeof(ipv4_buffer)); + u8 *packet = ipv4_buffer; memcpy(packet, header, 20); memcpy(packet + 20, payload, length); @@ -54,7 +56,6 @@ void send_ipv4_packet(ipv4_t ip, u8 protocol, const u8 *payload, u16 length) { for (; !get_mac_from_ip(ip, mac);) ; send_ethernet_packet(mac, 0x0800, packet, packet_length); - kfree(packet); } void handle_ipv4(const u8 *payload, u32 packet_length) { |