mirror of https://github.com/ipxe/ipxe.git
[efi] Raise TPL within EFI_SIMPLE_NETWORK_PROTOCOL entry points
Signed-off-by: Michael Brown <mcb30@ipxe.org>pull/68/merge
Michael Brown
parent
c89a446cf0
commit
a272b7ce57
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@ -233,8 +233,10 @@ efi_snp_stop ( EFI_SIMPLE_NETWORK_PROTOCOL *snp ) {
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static EFI_STATUS EFIAPI
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efi_snp_initialize ( EFI_SIMPLE_NETWORK_PROTOCOL *snp,
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UINTN extra_rx_bufsize, UINTN extra_tx_bufsize ) {
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EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
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struct efi_snp_device *snpdev =
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container_of ( snp, struct efi_snp_device, snp );
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EFI_TPL saved_tpl;
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int rc;
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DBGC ( snpdev, "SNPDEV %p INITIALIZE (%ld extra RX, %ld extra TX)\n",
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@ -242,17 +244,26 @@ efi_snp_initialize ( EFI_SIMPLE_NETWORK_PROTOCOL *snp,
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( ( unsigned long ) extra_tx_bufsize ) );
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/* Fail if net device is currently claimed for use by iPXE */
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if ( efi_snp_claimed )
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return EFI_NOT_READY;
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if ( efi_snp_claimed ) {
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rc = -EAGAIN;
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goto err_claimed;
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}
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/* Raise TPL */
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saved_tpl = bs->RaiseTPL ( TPL_CALLBACK );
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/* Open network device */
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if ( ( rc = netdev_open ( snpdev->netdev ) ) != 0 ) {
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DBGC ( snpdev, "SNPDEV %p could not open %s: %s\n",
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snpdev, snpdev->netdev->name, strerror ( rc ) );
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return EFIRC ( rc );
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goto err_open;
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}
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efi_snp_set_state ( snpdev );
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return 0;
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err_open:
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bs->RestoreTPL ( saved_tpl );
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err_claimed:
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return EFIRC ( rc );
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}
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/**
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@ -264,29 +275,41 @@ efi_snp_initialize ( EFI_SIMPLE_NETWORK_PROTOCOL *snp,
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*/
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static EFI_STATUS EFIAPI
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efi_snp_reset ( EFI_SIMPLE_NETWORK_PROTOCOL *snp, BOOLEAN ext_verify ) {
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EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
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struct efi_snp_device *snpdev =
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container_of ( snp, struct efi_snp_device, snp );
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EFI_TPL saved_tpl;
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int rc;
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DBGC ( snpdev, "SNPDEV %p RESET (%s extended verification)\n",
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snpdev, ( ext_verify ? "with" : "without" ) );
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/* Fail if net device is currently claimed for use by iPXE */
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if ( efi_snp_claimed )
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return EFI_NOT_READY;
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if ( efi_snp_claimed ) {
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rc = -EAGAIN;
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goto err_claimed;
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}
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/* Raise TPL */
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saved_tpl = bs->RaiseTPL ( TPL_CALLBACK );
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/* Close network device */
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netdev_close ( snpdev->netdev );
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efi_snp_set_state ( snpdev );
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efi_snp_flush ( snpdev );
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/* Reopen network device */
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if ( ( rc = netdev_open ( snpdev->netdev ) ) != 0 ) {
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DBGC ( snpdev, "SNPDEV %p could not reopen %s: %s\n",
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snpdev, snpdev->netdev->name, strerror ( rc ) );
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return EFIRC ( rc );
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goto err_open;
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}
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efi_snp_set_state ( snpdev );
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return 0;
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err_open:
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bs->RestoreTPL ( saved_tpl );
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err_claimed:
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return EFIRC ( rc );
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}
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/**
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@ -297,8 +320,10 @@ efi_snp_reset ( EFI_SIMPLE_NETWORK_PROTOCOL *snp, BOOLEAN ext_verify ) {
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*/
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static EFI_STATUS EFIAPI
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efi_snp_shutdown ( EFI_SIMPLE_NETWORK_PROTOCOL *snp ) {
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EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
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struct efi_snp_device *snpdev =
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container_of ( snp, struct efi_snp_device, snp );
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EFI_TPL saved_tpl;
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DBGC ( snpdev, "SNPDEV %p SHUTDOWN\n", snpdev );
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@ -306,10 +331,17 @@ efi_snp_shutdown ( EFI_SIMPLE_NETWORK_PROTOCOL *snp ) {
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if ( efi_snp_claimed )
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return EFI_NOT_READY;
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/* Raise TPL */
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saved_tpl = bs->RaiseTPL ( TPL_CALLBACK );
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/* Close network device */
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netdev_close ( snpdev->netdev );
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efi_snp_set_state ( snpdev );
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efi_snp_flush ( snpdev );
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/* Restore TPL */
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bs->RestoreTPL ( saved_tpl );
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return 0;
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}
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@ -512,8 +544,10 @@ efi_snp_nvdata ( EFI_SIMPLE_NETWORK_PROTOCOL *snp, BOOLEAN read,
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static EFI_STATUS EFIAPI
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efi_snp_get_status ( EFI_SIMPLE_NETWORK_PROTOCOL *snp,
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UINT32 *interrupts, VOID **txbuf ) {
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EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
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struct efi_snp_device *snpdev =
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container_of ( snp, struct efi_snp_device, snp );
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EFI_TPL saved_tpl;
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DBGC2 ( snpdev, "SNPDEV %p GET_STATUS", snpdev );
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@ -523,6 +557,9 @@ efi_snp_get_status ( EFI_SIMPLE_NETWORK_PROTOCOL *snp,
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return EFI_NOT_READY;
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}
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/* Raise TPL */
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saved_tpl = bs->RaiseTPL ( TPL_CALLBACK );
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/* Poll the network device */
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efi_snp_poll ( snpdev );
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@ -545,6 +582,9 @@ efi_snp_get_status ( EFI_SIMPLE_NETWORK_PROTOCOL *snp,
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DBGC2 ( snpdev, " TX:%p", *txbuf );
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}
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/* Restore TPL */
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bs->RestoreTPL ( saved_tpl );
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DBGC2 ( snpdev, "\n" );
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return 0;
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}
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@ -566,12 +606,14 @@ efi_snp_transmit ( EFI_SIMPLE_NETWORK_PROTOCOL *snp,
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UINTN ll_header_len, UINTN len, VOID *data,
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EFI_MAC_ADDRESS *ll_src, EFI_MAC_ADDRESS *ll_dest,
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UINT16 *net_proto ) {
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EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
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struct efi_snp_device *snpdev =
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container_of ( snp, struct efi_snp_device, snp );
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struct ll_protocol *ll_protocol = snpdev->netdev->ll_protocol;
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struct io_buffer *iobuf;
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size_t payload_len;
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unsigned int tx_fill;
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EFI_TPL saved_tpl;
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int rc;
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DBGC2 ( snpdev, "SNPDEV %p TRANSMIT %p+%lx", snpdev, data,
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@ -592,8 +634,13 @@ efi_snp_transmit ( EFI_SIMPLE_NETWORK_PROTOCOL *snp,
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DBGC2 ( snpdev, "\n" );
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/* Fail if net device is currently claimed for use by iPXE */
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if ( efi_snp_claimed )
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return EFI_NOT_READY;
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if ( efi_snp_claimed ) {
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rc = -EAGAIN;
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goto err_claimed;
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}
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/* Raise TPL */
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saved_tpl = bs->RaiseTPL ( TPL_CALLBACK );
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/* Sanity checks */
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if ( ll_header_len ) {
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@ -677,6 +724,9 @@ efi_snp_transmit ( EFI_SIMPLE_NETWORK_PROTOCOL *snp,
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snpdev->tx[ snpdev->tx_prod++ % EFI_SNP_NUM_TX ] = data;
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snpdev->interrupts |= EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;
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/* Restore TPL */
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bs->RestoreTPL ( saved_tpl );
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return 0;
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err_ring_full:
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@ -685,6 +735,8 @@ efi_snp_transmit ( EFI_SIMPLE_NETWORK_PROTOCOL *snp,
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free_iob ( iobuf );
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err_alloc_iob:
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err_sanity:
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bs->RestoreTPL ( saved_tpl );
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err_claimed:
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return EFIRC ( rc );
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}
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@ -705,6 +757,7 @@ efi_snp_receive ( EFI_SIMPLE_NETWORK_PROTOCOL *snp,
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UINTN *ll_header_len, UINTN *len, VOID *data,
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EFI_MAC_ADDRESS *ll_src, EFI_MAC_ADDRESS *ll_dest,
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UINT16 *net_proto ) {
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EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
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struct efi_snp_device *snpdev =
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container_of ( snp, struct efi_snp_device, snp );
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struct ll_protocol *ll_protocol = snpdev->netdev->ll_protocol;
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@ -714,14 +767,20 @@ efi_snp_receive ( EFI_SIMPLE_NETWORK_PROTOCOL *snp,
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uint16_t iob_net_proto;
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unsigned int iob_flags;
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size_t copy_len;
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EFI_TPL saved_tpl;
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int rc;
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DBGC2 ( snpdev, "SNPDEV %p RECEIVE %p(+%lx)", snpdev, data,
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( ( unsigned long ) *len ) );
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/* Fail if net device is currently claimed for use by iPXE */
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if ( efi_snp_claimed )
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return EFI_NOT_READY;
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if ( efi_snp_claimed ) {
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rc = -EAGAIN;
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goto err_claimed;
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}
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/* Raise TPL */
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saved_tpl = bs->RaiseTPL ( TPL_CALLBACK );
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/* Poll the network device */
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efi_snp_poll ( snpdev );
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@ -770,6 +829,8 @@ efi_snp_receive ( EFI_SIMPLE_NETWORK_PROTOCOL *snp,
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out_bad_ll_header:
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free_iob ( iobuf );
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out_no_packet:
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bs->RestoreTPL ( saved_tpl );
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err_claimed:
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return EFIRC ( rc );
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}
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@ -781,7 +842,9 @@ efi_snp_receive ( EFI_SIMPLE_NETWORK_PROTOCOL *snp,
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*/
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static VOID EFIAPI efi_snp_wait_for_packet ( EFI_EVENT event __unused,
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VOID *context ) {
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EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
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struct efi_snp_device *snpdev = context;
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EFI_TPL saved_tpl;
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DBGCP ( snpdev, "SNPDEV %p WAIT_FOR_PACKET\n", snpdev );
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@ -793,8 +856,14 @@ static VOID EFIAPI efi_snp_wait_for_packet ( EFI_EVENT event __unused,
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if ( efi_snp_claimed )
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return;
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/* Raise TPL */
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saved_tpl = bs->RaiseTPL ( TPL_CALLBACK );
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/* Poll the network device */
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efi_snp_poll ( snpdev );
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/* Restore TPL */
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bs->RestoreTPL ( saved_tpl );
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}
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/** SNP interface */
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