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[stp] Fix interpretaton of hello time

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Times in STP packets are expressed in units of 1/256 of a second.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2015-06-25 17:30:12 +01:00
parent fb28c4a979
commit 94dbfb4374
1 changed files with 3 additions and 3 deletions
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6
src/net/stp.c
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@@ -65,7 +65,7 @@ static int stp_rx ( struct io_buffer *iobuf, struct net_device *netdev,
const void *ll_source __unused, const void *ll_source __unused,
unsigned int flags __unused ) { unsigned int flags __unused ) {
struct stp_bpdu *stp; struct stp_bpdu *stp;
unsigned int timeout; unsigned int hello;
int rc; int rc;
/* Sanity check */ /* Sanity check */
@@ -110,8 +110,8 @@ static int stp_rx ( struct io_buffer *iobuf, struct net_device *netdev,
"forwarding\n", "forwarding\n",
netdev->name, eth_ntoa ( stp->sender.mac ), netdev->name, eth_ntoa ( stp->sender.mac ),
ntohs ( stp->port ), stp->flags ); ntohs ( stp->port ), stp->flags );
timeout = ( ntohs ( stp->hello ) * TICKS_PER_SEC * 2 ); hello = ( ( ntohs ( stp->hello ) * TICKS_PER_SEC ) / 256 );
netdev_link_block ( netdev, timeout ); netdev_link_block ( netdev, ( hello * 2 ) );
rc = -ENETUNREACH; rc = -ENETUNREACH;
goto done; goto done;
} }