diff options
author | 2016-05-18 13:18:31 +0300 | |
---|---|---|
committer | 2016-05-18 13:42:15 +0300 | |
commit | 437fd90c0250dee670290f9b714253671a990160 (patch) | |
tree | b871786c360704244a07411c69fb58da9ead4a06 /qemu/roms/ipxe/src/net/netdevice.c | |
parent | 5bbd6fe9b8bab2a93e548c5a53b032d1939eec05 (diff) |
These changes are the raw update to qemu-2.6.
Collission happened in the following patches:
migration: do cleanup operation after completion(738df5b9)
Bug fix.(1750c932f86)
kvmclock: add a new function to update env->tsc.(b52baab2)
The code provided by the patches was already in the upstreamed
version.
Change-Id: I3cc11841a6a76ae20887b2e245710199e1ea7f9a
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'qemu/roms/ipxe/src/net/netdevice.c')
-rw-r--r-- | qemu/roms/ipxe/src/net/netdevice.c | 74 |
1 files changed, 63 insertions, 11 deletions
diff --git a/qemu/roms/ipxe/src/net/netdevice.c b/qemu/roms/ipxe/src/net/netdevice.c index a55e6b7d7..7c40a2ac8 100644 --- a/qemu/roms/ipxe/src/net/netdevice.c +++ b/qemu/roms/ipxe/src/net/netdevice.c @@ -15,9 +15,13 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. + * + * You can also choose to distribute this program under the terms of + * the Unmodified Binary Distribution Licence (as given in the file + * COPYING.UBDL), provided that you have satisfied its requirements. */ -FILE_LICENCE ( GPL2_OR_LATER ); +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #include <stdint.h> #include <stdlib.h> @@ -35,6 +39,7 @@ FILE_LICENCE ( GPL2_OR_LATER ); #include <ipxe/device.h> #include <ipxe/errortab.h> #include <ipxe/profile.h> +#include <ipxe/fault.h> #include <ipxe/vlan.h> #include <ipxe/netdevice.h> @@ -157,6 +162,9 @@ void netdev_rx_unfreeze ( struct net_device *netdev ) { */ void netdev_link_err ( struct net_device *netdev, int rc ) { + /* Stop link block timer */ + stop_timer ( &netdev->link_block ); + /* Record link state */ netdev->link_rc = rc; if ( netdev->link_rc == 0 ) { @@ -187,6 +195,50 @@ void netdev_link_down ( struct net_device *netdev ) { } /** + * Mark network device link as being blocked + * + * @v netdev Network device + * @v timeout Timeout (in ticks) + */ +void netdev_link_block ( struct net_device *netdev, unsigned long timeout ) { + + /* Start link block timer */ + if ( ! netdev_link_blocked ( netdev ) ) { + DBGC ( netdev, "NETDEV %s link blocked for %ld ticks\n", + netdev->name, timeout ); + } + start_timer_fixed ( &netdev->link_block, timeout ); +} + +/** + * Mark network device link as being unblocked + * + * @v netdev Network device + */ +void netdev_link_unblock ( struct net_device *netdev ) { + + /* Stop link block timer */ + if ( netdev_link_blocked ( netdev ) ) + DBGC ( netdev, "NETDEV %s link unblocked\n", netdev->name ); + stop_timer ( &netdev->link_block ); +} + +/** + * Handle network device link block timer expiry + * + * @v timer Link block timer + * @v fail Failure indicator + */ +static void netdev_link_block_expired ( struct retry_timer *timer, + int fail __unused ) { + struct net_device *netdev = + container_of ( timer, struct net_device, link_block ); + + /* Assume link is no longer blocked */ + DBGC ( netdev, "NETDEV %s link block expired\n", netdev->name ); +} + +/** * Record network device statistic * * @v stats Network device statistics @@ -252,11 +304,8 @@ int netdev_tx ( struct net_device *netdev, struct io_buffer *iobuf ) { } /* Discard packet (for test purposes) if applicable */ - if ( ( NETDEV_DISCARD_RATE > 0 ) && - ( ( random() % NETDEV_DISCARD_RATE ) == 0 ) ) { - rc = -EAGAIN; + if ( ( rc = inject_fault ( NETDEV_DISCARD_RATE ) ) != 0 ) goto err; - } /* Transmit packet */ if ( ( rc = netdev->op->transmit ( netdev, iobuf ) ) != 0 ) @@ -406,14 +455,14 @@ static void netdev_tx_flush ( struct net_device *netdev ) { * function takes ownership of the I/O buffer. */ void netdev_rx ( struct net_device *netdev, struct io_buffer *iobuf ) { + int rc; DBGC2 ( netdev, "NETDEV %s received %p (%p+%zx)\n", netdev->name, iobuf, iobuf->data, iob_len ( iobuf ) ); /* Discard packet (for test purposes) if applicable */ - if ( ( NETDEV_DISCARD_RATE > 0 ) && - ( ( random() % NETDEV_DISCARD_RATE ) == 0 ) ) { - netdev_rx_err ( netdev, iobuf, -EAGAIN ); + if ( ( rc = inject_fault ( NETDEV_DISCARD_RATE ) ) != 0 ) { + netdev_rx_err ( netdev, iobuf, rc ); return; } @@ -541,7 +590,8 @@ static struct interface_descriptor netdev_config_desc = static void free_netdev ( struct refcnt *refcnt ) { struct net_device *netdev = container_of ( refcnt, struct net_device, refcnt ); - + + stop_timer ( &netdev->link_block ); netdev_tx_flush ( netdev ); netdev_rx_flush ( netdev ); clear_settings ( netdev_settings ( netdev ) ); @@ -571,6 +621,8 @@ struct net_device * alloc_netdev ( size_t priv_len ) { if ( netdev ) { ref_init ( &netdev->refcnt, free_netdev ); netdev->link_rc = -EUNKNOWN_LINK_STATUS; + timer_init ( &netdev->link_block, netdev_link_block_expired, + &netdev->refcnt ); INIT_LIST_HEAD ( &netdev->tx_queue ); INIT_LIST_HEAD ( &netdev->tx_deferred ); INIT_LIST_HEAD ( &netdev->rx_queue ); @@ -624,11 +676,11 @@ int register_netdev ( struct net_device *netdev ) { } /* Record device index and create device name */ - netdev->index = netdev_index++; if ( netdev->name[0] == '\0' ) { snprintf ( netdev->name, sizeof ( netdev->name ), "net%d", - netdev->index ); + netdev_index ); } + netdev->index = ++netdev_index; /* Use least significant bits of the link-layer address to * improve the randomness of the (non-cryptographic) random |