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Patch from Matt Thomas to fix mbuf leak in FDDI driver.

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This commit is contained in:
David Greenman 1995-04-01 01:43:56 +00:00
parent 478140b95f
commit 1fca221ae2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=7542
1 changed files with 10 additions and 3 deletions
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13
sys/pci/pdq.c
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@ -21,9 +21,13 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id: pdq.c,v 1.2 1995/03/21 22:43:04 se Exp $
* $Id: pdq.c,v 1.3 1995/03/25 22:40:48 bde Exp $
*
* $Log: pdq.c,v $
* Revision 1.3 1995/03/25 22:40:48 bde
* Remove wrong redeclarations of printf() and bzero(). Include the correct
* header to declare DELAY().
*
* Revision 1.2 1995/03/21 22:43:04 se
* Silence "gcc -Wall".
*
@ -715,6 +719,7 @@ pdq_process_received_data(
pdq_uint32_t ring_mask)
{
pdq_uint32_t completion = rx->rx_completion;
pdq_uint32_t producer = rx->rx_producer;
PDQ_OS_DATABUF_T **buffers = (PDQ_OS_DATABUF_T **) rx->rx_buffers;
pdq_rxdesc_t *rxd;
pdq_uint32_t idx;
@ -779,7 +784,7 @@ pdq_process_received_data(
}
PDQ_OS_DATABUF_NEXT_SET(lpdu, NULL);
for (idx = 0; idx < PDQ_RX_SEGCNT; idx++) {
buffers[(rx->rx_producer + idx) & ring_mask] =
buffers[(producer + idx) & ring_mask] =
buffers[(completion + idx) & ring_mask];
buffers[(completion + idx) & ring_mask] = NULL;
}
@ -792,6 +797,7 @@ pdq_process_received_data(
}
pdq_os_receive_pdu(pdq, fpdu, pdulen);
rx->rx_free += PDQ_RX_SEGCNT;
PDQ_ADVANCE(producer, PDQ_RX_SEGCNT, ring_mask);
PDQ_ADVANCE(completion, PDQ_RX_SEGCNT, ring_mask);
continue;
} else {
@ -816,7 +822,7 @@ pdq_process_received_data(
* ring entries were freed.
*/
for (idx = 0; idx < PDQ_RX_SEGCNT; idx++) {
buffers[rx->rx_producer] = buffers[completion];
buffers[producer] = buffers[completion];
buffers[completion] = NULL;
rxd = &receives[rx->rx_producer];
if (idx == 0) {
@ -828,6 +834,7 @@ pdq_process_received_data(
rxd->rxd_seg_len_hi = PDQ_OS_DATABUF_SIZE / 16;
rxd->rxd_pa_lo = PDQ_OS_VA_TO_PA(PDQ_OS_DATABUF_PTR(buffers[rx->rx_producer]));
PDQ_ADVANCE(rx->rx_producer, 1, ring_mask);
PDQ_ADVANCE(producer, 1, ring_mask);
PDQ_ADVANCE(completion, 1, ring_mask);
}
}