diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/cxgb4vf/cxgb4vf_main.c | 32 | ||||
| -rw-r--r-- | drivers/net/cxgb4vf/sge.c | 12 |
2 files changed, 16 insertions, 28 deletions
diff --git a/drivers/net/cxgb4vf/cxgb4vf_main.c b/drivers/net/cxgb4vf/cxgb4vf_main.c index e988031..d065516 100644 --- a/drivers/net/cxgb4vf/cxgb4vf_main.c +++ b/drivers/net/cxgb4vf/cxgb4vf_main.c @@ -423,12 +423,13 @@ static int fwevtq_handler(struct sge_rspq *rspq, const __be64 *rsp, case CPL_SGE_EGR_UPDATE: { /* - * We've received an Egress Queue status update message. - * We get these, as the SGE is currently configured, when - * the firmware passes certain points in processing our - * TX Ethernet Queue. We use these updates to determine - * when we may need to restart a TX Ethernet Queue which - * was stopped for lack of free slots ... + * We've received an Egress Queue Status Update message. We + * get these, if the SGE is configured to send these when the + * firmware passes certain points in processing our TX + * Ethernet Queue or if we make an explicit request for one. + * We use these updates to determine when we may need to + * restart a TX Ethernet Queue which was stopped for lack of + * free TX Queue Descriptors ... */ const struct cpl_sge_egr_update *p = (void *)cpl; unsigned int qid = EGR_QID(be32_to_cpu(p->opcode_qid)); @@ -436,7 +437,6 @@ static int fwevtq_handler(struct sge_rspq *rspq, const __be64 *rsp, struct sge_txq *tq; struct sge_eth_txq *txq; unsigned int eq_idx; - int hw_cidx, reclaimable, in_use; /* * Perform sanity checking on the Queue ID to make sure it @@ -466,24 +466,6 @@ static int fwevtq_handler(struct sge_rspq *rspq, const __be64 *rsp, } /* - * Skip TX Queues which aren't stopped. - */ - if (likely(!netif_tx_queue_stopped(txq->txq))) - break; - - /* - * Skip stopped TX Queues which have more than half of their - * DMA rings occupied with unacknowledged writes. - */ - hw_cidx = be16_to_cpu(txq->q.stat->cidx); - reclaimable = hw_cidx - txq->q.cidx; - if (reclaimable < 0) - reclaimable += txq->q.size; - in_use = txq->q.in_use - reclaimable; - if (in_use >= txq->q.size/2) - break; - - /* * Restart a stopped TX Queue which has less than half of its * TX ring in use ... */ diff --git a/drivers/net/cxgb4vf/sge.c b/drivers/net/cxgb4vf/sge.c index 37c6354..f2ee9b0 100644 --- a/drivers/net/cxgb4vf/sge.c +++ b/drivers/net/cxgb4vf/sge.c @@ -1070,6 +1070,7 @@ static inline void txq_advance(struct sge_txq *tq, unsigned int n) */ int t4vf_eth_xmit(struct sk_buff *skb, struct net_device *dev) { + u32 wr_mid; u64 cntrl, *end; int qidx, credits; unsigned int flits, ndesc; @@ -1143,14 +1144,19 @@ int t4vf_eth_xmit(struct sk_buff *skb, struct net_device *dev) goto out_free; } + wr_mid = FW_WR_LEN16(DIV_ROUND_UP(flits, 2)); if (unlikely(credits < ETHTXQ_STOP_THRES)) { /* * After we're done injecting the Work Request for this * packet, we'll be below our "stop threshhold" so stop the TX - * Queue now. The queue will get started later on when the - * firmware informs us that space has opened up. + * Queue now and schedule a request for an SGE Egress Queue + * Update message. The queue will get started later on when + * the firmware processes this Work Request and sends us an + * Egress Queue Status Update message indicating that space + * has opened up. */ txq_stop(txq); + wr_mid |= FW_WR_EQUEQ | FW_WR_EQUIQ; } /* @@ -1161,7 +1167,7 @@ int t4vf_eth_xmit(struct sk_buff *skb, struct net_device *dev) */ BUG_ON(DIV_ROUND_UP(ETHTXQ_MAX_HDR, TXD_PER_EQ_UNIT) > 1); wr = (void *)&txq->q.desc[txq->q.pidx]; - wr->equiq_to_len16 = cpu_to_be32(FW_WR_LEN16(DIV_ROUND_UP(flits, 2))); + wr->equiq_to_len16 = cpu_to_be32(wr_mid); wr->r3[0] = cpu_to_be64(0); wr->r3[1] = cpu_to_be64(0); skb_copy_from_linear_data(skb, (void *)wr->ethmacdst, fw_hdr_copy_len); |