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author | Michael Brown <mcb30@etherboot.org> | 2009-06-27 16:36:21 +0100 |
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committer | Michael Brown <mcb30@etherboot.org> | 2009-06-27 16:36:21 +0100 |
commit | c26a38b313389af157880efa8557ef894906e317 (patch) | |
tree | f058da3f63671b12f2608dc8b2ff4f7bfac12f1a /src/Makefile.housekeeping | |
parent | f186ada2d3ab7f4f03f3c3ac8e9bf3577fb00504 (diff) | |
download | ipxe-c26a38b313389af157880efa8557ef894906e317.zip ipxe-c26a38b313389af157880efa8557ef894906e317.tar.gz ipxe-c26a38b313389af157880efa8557ef894906e317.tar.bz2 |
[pxe] Update UNDI transmit count before transmitting packet
It is possible that the UNDI ISR may be triggered before netdev_tx()
returns control to pxenv_undi_transmit(). This means that
pxenv_undi_isr() may see a zero undi_tx_count, and so not check for TX
completions. This is not a significant problem, since it will check
for TX completions on the next call to pxenv_undi_isr() anyway; it
just means that the NBP will see a spurious IRQ that was apparently
caused by nothing.
Fix by updating the undi_tx_count before calling netdev_tx(), so that
pxenv_undi_isr() can decrement it and report the TX completion.
Diffstat (limited to 'src/Makefile.housekeeping')
0 files changed, 0 insertions, 0 deletions