Author: shurd
Date: Tue Dec 11 17:46:01 2018
New Revision: 341824
URL: https://svnweb.freebsd.org/changeset/base/341824
Log:
Fix !tx_abdicate error from r336560
r336560 was supposed to restore pre-r323954 behaviour when tx_abdicate is
not set (the default case). However, it appears that rather than the drainage
check being made conditional on tx_abdicate being set, it was duplicated
so it occured twice if tx_abdicate was set and once if it was not.
Now when !tx_abdicate, drainage is only checked if the doorbell isn't
pending.
Reported by: lev
MFC after: 1 week
Sponsored by: Limelight Networks
Modified:
head/sys/net/iflib.c
Modified: head/sys/net/iflib.c
==============================================================================
--- head/sys/net/iflib.c Tue Dec 11 17:39:49 2018 (r341823)
+++ head/sys/net/iflib.c Tue Dec 11 17:46:01 2018 (r341824)
@@ -3582,7 +3582,6 @@ _task_fn_tx(void *context)
*/
if (abdicate)
ifmp_ring_check_drainage(txq->ift_br, TX_BATCH_SIZE);
- ifmp_ring_check_drainage(txq->ift_br, TX_BATCH_SIZE);
if (ctx->ifc_flags & IFC_LEGACY)
IFDI_INTR_ENABLE(ctx);
else {
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