diff options
Diffstat (limited to 'qemu/roms/ipxe/src/include/ipxe/netdevice.h')
| -rw-r--r-- | qemu/roms/ipxe/src/include/ipxe/netdevice.h | 41 |
1 files changed, 33 insertions, 8 deletions
diff --git a/qemu/roms/ipxe/src/include/ipxe/netdevice.h b/qemu/roms/ipxe/src/include/ipxe/netdevice.h index 95ad1cf1b..a1d207ffc 100644 --- a/qemu/roms/ipxe/src/include/ipxe/netdevice.h +++ b/qemu/roms/ipxe/src/include/ipxe/netdevice.h @@ -7,7 +7,7 @@ * */ -FILE_LICENCE ( GPL2_OR_LATER ); +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #include <stdint.h> #include <ipxe/list.h> @@ -15,6 +15,7 @@ FILE_LICENCE ( GPL2_OR_LATER ); #include <ipxe/refcnt.h> #include <ipxe/settings.h> #include <ipxe/interface.h> +#include <ipxe/retry.h> struct io_buffer; struct net_device; @@ -36,13 +37,12 @@ struct device; /** Maximum length of a link-layer header * - * The longest currently-supported link-layer header is for 802.11: a - * 24-byte frame header plus an 8-byte 802.3 LLC/SNAP header, plus a - * possible 4-byte VLAN header. (The IPoIB link-layer pseudo-header - * doesn't actually include link-layer addresses; see ipoib.c for - * details.) + * The longest currently-supported link-layer header is for RNDIS: an + * 8-byte RNDIS header, a 32-byte RNDIS packet message header, a + * 14-byte Ethernet header and a possible 4-byte VLAN header. Round + * up to 64 bytes. */ -#define MAX_LL_HEADER_LEN 36 +#define MAX_LL_HEADER_LEN 64 /** Maximum length of a network-layer address */ #define MAX_NET_ADDR_LEN 16 @@ -393,6 +393,8 @@ struct net_device { * indicates the error preventing link-up. */ int link_rc; + /** Link block timer */ + struct retry_timer link_block; /** Maximum packet length * * This length includes any link-layer headers. @@ -428,6 +430,14 @@ struct net_device { /** Network device receive queue processing is frozen */ #define NETDEV_RX_FROZEN 0x0004 +/** Network device interrupts are unsupported + * + * This flag can be used by a network device to indicate that + * interrupts are not supported despite the presence of an irq() + * method. + */ +#define NETDEV_IRQ_UNSUPPORTED 0x0008 + /** Link-layer protocol table */ #define LL_PROTOCOLS __table ( struct ll_protocol, "ll_protocols" ) @@ -615,6 +625,17 @@ netdev_link_ok ( struct net_device *netdev ) { } /** + * Check link block state of network device + * + * @v netdev Network device + * @ret link_blocked Link is blocked + */ +static inline __attribute__ (( always_inline )) int +netdev_link_blocked ( struct net_device *netdev ) { + return ( timer_running ( &netdev->link_block ) ); +} + +/** * Check whether or not network device is open * * @v netdev Network device @@ -633,7 +654,8 @@ netdev_is_open ( struct net_device *netdev ) { */ static inline __attribute__ (( always_inline )) int netdev_irq_supported ( struct net_device *netdev ) { - return ( netdev->op->irq != NULL ); + return ( ( netdev->op->irq != NULL ) && + ! ( netdev->state & NETDEV_IRQ_UNSUPPORTED ) ); } /** @@ -662,6 +684,9 @@ extern void netdev_rx_freeze ( struct net_device *netdev ); extern void netdev_rx_unfreeze ( struct net_device *netdev ); extern void netdev_link_err ( struct net_device *netdev, int rc ); extern void netdev_link_down ( struct net_device *netdev ); +extern void netdev_link_block ( struct net_device *netdev, + unsigned long timeout ); +extern void netdev_link_unblock ( struct net_device *netdev ); extern int netdev_tx ( struct net_device *netdev, struct io_buffer *iobuf ); extern void netdev_tx_defer ( struct net_device *netdev, struct io_buffer *iobuf ); |