cxgb4: Add debugfs facility to inject FL starvation

[linux-2.6-microblaze.git] / drivers / net / ethernet / chelsio / cxgb4 / sge.c

diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index dd18fcb..19886d5 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -588,6 +588,11 @@ static unsigned int refill_fl(struct adapter *adap, struct sge_fl *q, int n,
        struct rx_sw_desc *sd = &q->sdesc[q->pidx];
        int node;
 
+#ifdef CONFIG_DEBUG_FS
+       if (test_bit(q->cntxt_id - adap->sge.egr_start, adap->sge.blocked_fl))
+               goto out;
+#endif
+
        gfp |= __GFP_NOWARN;
        node = dev_to_node(adap->pdev_dev);