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| author | Michael Brown | 2015-07-22 03:56:49 +0200 |
|---|---|---|
| committer | Michael Brown | 2015-07-22 22:17:47 +0200 |
| commit | d0325b1da64c8ff611cd4c3151e266dd2685c462 (patch) | |
| tree | aa8daf27408752e2c88cba632fe8443682922b50 /src/net/netdevice.c | |
| parent | [tcp] Ensure FIN is actually sent if connection is closed while idle (diff) | |
| download | ipxe-d0325b1da64c8ff611cd4c3151e266dd2685c462.tar.gz ipxe-d0325b1da64c8ff611cd4c3151e266dd2685c462.tar.xz ipxe-d0325b1da64c8ff611cd4c3151e266dd2685c462.zip | |
[fault] Generalise NETDEV_DISCARD_RATE fault injection mechanism
Provide a generic inject_fault() function that can be used to inject
random faults with configurable probabilities.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/net/netdevice.c')
| -rw-r--r-- | src/net/netdevice.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/src/net/netdevice.c b/src/net/netdevice.c index f2821efe..889b00c1 100644 --- a/src/net/netdevice.c +++ b/src/net/netdevice.c @@ -39,6 +39,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #include <ipxe/device.h> #include <ipxe/errortab.h> #include <ipxe/profile.h> +#include <ipxe/fault.h> #include <ipxe/vlan.h> #include <ipxe/netdevice.h> @@ -303,11 +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 ) @@ -457,14 +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; } |