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#include "efi.h"
#include "net.h"
#include "fs/pxe/pxe.h"
extern EFI_GUID Tcp4ServiceBindingProtocol;
extern EFI_GUID Tcp4Protocol;
extern struct efi_binding *efi_create_binding(EFI_GUID *, EFI_GUID *);
extern void efi_destroy_binding(struct efi_binding *, EFI_GUID *);
int core_tcp_open(struct pxe_pvt_inode *socket)
{
struct efi_binding *b;
b = efi_create_binding(&Tcp4ServiceBindingProtocol, &Tcp4Protocol);
if (!b)
return -1;
socket->net.efi.binding = b;
return 0;
}
static EFIAPI void null_cb(EFI_EVENT ev, void *context)
{
EFI_TCP4_COMPLETION_TOKEN *token = context;
(void)ev;
uefi_call_wrapper(BS->CloseEvent, 1, token->Event);
}
static int volatile cb_status = -1;
static EFIAPI void tcp_cb(EFI_EVENT ev, void *context)
{
EFI_TCP4_COMPLETION_TOKEN *token = context;
(void)ev;
if (token->Status == EFI_SUCCESS)
cb_status = 0;
else
cb_status = 1;
}
int core_tcp_connect(struct pxe_pvt_inode *socket, uint32_t ip, uint16_t port)
{
EFI_TCP4_CONNECTION_TOKEN token;
EFI_TCP4_ACCESS_POINT *ap;
EFI_TCP4_CONFIG_DATA tdata;
struct efi_binding *b = socket->net.efi.binding;
EFI_STATUS status;
EFI_TCP4 *tcp = (EFI_TCP4 *)b->this;
int rv = -1;
int unmapped = 1;
jiffies_t start, last, cur;
memset(&tdata, 0, sizeof(tdata));
ap = &tdata.AccessPoint;
ap->UseDefaultAddress = TRUE;
memcpy(&ap->RemoteAddress, &ip, sizeof(ip));
ap->RemotePort = port;
ap->ActiveFlag = TRUE; /* Initiate active open */
tdata.TimeToLive = 64;
last = start = jiffies();
while (unmapped){
status = uefi_call_wrapper(tcp->Configure, 2, tcp, &tdata);
if (status != EFI_NO_MAPPING)
unmapped = 0;
else {
cur = jiffies();
if ( (cur - last) >= EFI_NOMAP_PRINT_DELAY ) {
last = cur;
Print(L"core_tcp_connect: stalling on configure with no mapping\n");
} else if ( (cur - start) > EFI_NOMAP_PRINT_DELAY * EFI_NOMAP_PRINT_COUNT) {
Print(L"core_tcp_connect: aborting on no mapping\n");
unmapped = 0;
}
}
}
if (status != EFI_SUCCESS)
return -1;
status = efi_setup_event(&token.CompletionToken.Event,
(EFI_EVENT_NOTIFY)tcp_cb, &token.CompletionToken);
if (status != EFI_SUCCESS)
return -1;
status = uefi_call_wrapper(tcp->Connect, 2, tcp, &token);
if (status != EFI_SUCCESS) {
Print(L"Failed to connect: %d\n", status);
goto out;
}
while (cb_status == -1)
uefi_call_wrapper(tcp->Poll, 1, tcp);
if (cb_status == 0)
rv = 0;
/* Reset */
cb_status = -1;
out:
uefi_call_wrapper(BS->CloseEvent, 1, token.CompletionToken.Event);
return rv;
}
bool core_tcp_is_connected(struct pxe_pvt_inode *socket)
{
if (socket->net.efi.binding)
return true;
return false;
}
int core_tcp_write(struct pxe_pvt_inode *socket, const void *data,
size_t len, bool copy)
{
EFI_TCP4_TRANSMIT_DATA txdata;
EFI_TCP4_FRAGMENT_DATA *frag;
struct efi_binding *b = socket->net.efi.binding;
EFI_TCP4_IO_TOKEN iotoken;
EFI_STATUS status;
EFI_TCP4 *tcp = (EFI_TCP4 *)b->this;
int rv = -1;
(void)copy;
memset(&iotoken, 0, sizeof(iotoken));
memset(&txdata, 0, sizeof(txdata));
txdata.DataLength = len;
txdata.FragmentCount = 1;
frag = &txdata.FragmentTable[0];
frag->FragmentLength = len;
frag->FragmentBuffer = (void *)data;
iotoken.Packet.TxData = &txdata;
status = efi_setup_event(&iotoken.CompletionToken.Event,
(EFI_EVENT_NOTIFY)tcp_cb, &iotoken.CompletionToken);
if (status != EFI_SUCCESS)
return -1;
status = uefi_call_wrapper(tcp->Transmit, 2, tcp, &iotoken);
if (status != EFI_SUCCESS) {
Print(L"tcp transmit failed, %d\n", status);
goto out;
}
while (cb_status == -1)
uefi_call_wrapper(tcp->Poll, 1, tcp);
if (cb_status == 0)
rv = 0;
/* Reset */
cb_status = -1;
out:
uefi_call_wrapper(BS->CloseEvent, 1, iotoken.CompletionToken.Event);
return rv;
}
void core_tcp_close_file(struct inode *inode)
{
struct pxe_pvt_inode *socket = PVT(inode);
struct efi_binding *b = socket->net.efi.binding;
EFI_TCP4_CLOSE_TOKEN token;
EFI_STATUS status;
EFI_TCP4 *tcp = (EFI_TCP4 *)b->this;
if (!socket->tftp_goteof) {
memset(&token, 0, sizeof(token));
status = efi_setup_event(&token.CompletionToken.Event,
(EFI_EVENT_NOTIFY)null_cb,
&token.CompletionToken);
if (status != EFI_SUCCESS)
return;
status = uefi_call_wrapper(tcp->Close, 2, tcp, &token);
if (status != EFI_SUCCESS)
Print(L"tcp close failed: %d\n", status);
}
efi_destroy_binding(b, &Tcp4ServiceBindingProtocol);
socket->net.efi.binding = NULL;
}
static char databuf[8192];
void core_tcp_fill_buffer(struct inode *inode)
{
struct pxe_pvt_inode *socket = PVT(inode);
struct efi_binding *b = socket->net.efi.binding;
EFI_TCP4_IO_TOKEN iotoken;
EFI_TCP4_RECEIVE_DATA rxdata;
EFI_TCP4_FRAGMENT_DATA *frag;
EFI_STATUS status;
EFI_TCP4 *tcp = (EFI_TCP4 *)b->this;
void *data;
size_t len;
memset(&iotoken, 0, sizeof(iotoken));
memset(&rxdata, 0, sizeof(rxdata));
status = efi_setup_event(&iotoken.CompletionToken.Event,
(EFI_EVENT_NOTIFY)tcp_cb, &iotoken.CompletionToken);
if (status != EFI_SUCCESS)
return;
iotoken.Packet.RxData = &rxdata;
rxdata.FragmentCount = 1;
rxdata.DataLength = sizeof(databuf);
frag = &rxdata.FragmentTable[0];
frag->FragmentBuffer = databuf;
frag->FragmentLength = sizeof(databuf);
status = uefi_call_wrapper(tcp->Receive, 2, tcp, &iotoken);
if (status == EFI_CONNECTION_FIN) {
socket->tftp_goteof = 1;
if (inode->size == (uint64_t)-1)
inode->size = socket->tftp_filepos;
socket->ops->close(inode);
goto out;
}
while (cb_status == -1)
uefi_call_wrapper(tcp->Poll, 1, tcp);
/* Reset */
cb_status = -1;
len = frag->FragmentLength;
memcpy(databuf, frag->FragmentBuffer, len);
data = databuf;
socket->tftp_dataptr = data;
socket->tftp_filepos += len;
socket->tftp_bytesleft = len;
out:
uefi_call_wrapper(BS->CloseEvent, 1, iotoken.CompletionToken.Event);
}
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