d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

cxgbe(4): Always dispatch all work requests that have been written to the

Browse Source 
descriptor ring before leaving drain_wrq_wr_list.
This commit is contained in:
np 2016-04-12 22:11:29 +00:00
parent 421a097e61
commit b38b6a219d
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
sys/dev/cxgbe/t4_sge.c
View File

@ -1726,7 +1726,8 @@ drain_wrq_wr_list(struct adapter *sc, struct sge_wrq *wrq)
MPASS(TAILQ_EMPTY(&wrq->incomplete_wrs));
wr = STAILQ_FIRST(&wrq->wr_list);
MPASS(wr != NULL); /* Must be called with something useful to do */
dbdiff = IDXDIFF(eq->pidx, eq->dbidx, eq->sidx);
MPASS(eq->pidx == eq->dbidx);
dbdiff = 0;
do {
eq->cidx = read_hw_cidx(eq);
@ -1738,7 +1739,7 @@ drain_wrq_wr_list(struct adapter *sc, struct sge_wrq *wrq)
MPASS(wr->wrq == wrq);
n = howmany(wr->wr_len, EQ_ESIZE);
if (available < n)
return;
break;
dst = (void *)&eq->desc[eq->pidx];
if (__predict_true(eq->sidx - eq->pidx > n)) {