diff options
| author | Divy Le Ray <divy@chelsio.com> | 2007-11-16 11:22:21 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 15:04:12 -0800 |
| commit | afefce66a5c73aef597074b184b83a4df9704afd (patch) | |
| tree | 6e877448c409fb68c00492d3e62fb377f1021d8d /drivers/net | |
| parent | a2604be5488095657aeb1a09c3f08d9f760132ec (diff) | |
| download | blackbird-op-linux-afefce66a5c73aef597074b184b83a4df9704afd.tar.gz blackbird-op-linux-afefce66a5c73aef597074b184b83a4df9704afd.zip | |
cxgb3 - Fix I/O synchronization
Synchronize memory access before ringing
the Tx door bell.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/cxgb3/sge.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c index 7b13d8a31e38..666c317dc6d6 100644 --- a/drivers/net/cxgb3/sge.c +++ b/drivers/net/cxgb3/sge.c @@ -174,6 +174,7 @@ static inline struct sge_qset *txq_to_qset(const struct sge_txq *q, int qidx) static inline void refill_rspq(struct adapter *adapter, const struct sge_rspq *q, unsigned int credits) { + rmb(); t3_write_reg(adapter, A_SG_RSPQ_CREDIT_RETURN, V_RSPQ(q->cntxt_id) | V_CREDITS(credits)); } @@ -458,7 +459,7 @@ nomem: q->alloc_failed++; } q->credits++; } - + wmb(); t3_write_reg(adap, A_SG_KDOORBELL, V_EGRCNTX(q->cntxt_id)); } @@ -1353,6 +1354,7 @@ static void restart_ctrlq(unsigned long data) } spin_unlock(&q->lock); + wmb(); t3_write_reg(qs->adap, A_SG_KDOORBELL, F_SELEGRCNTX | V_EGRCNTX(q->cntxt_id)); } @@ -1572,6 +1574,7 @@ static void restart_offloadq(unsigned long data) set_bit(TXQ_RUNNING, &q->flags); set_bit(TXQ_LAST_PKT_DB, &q->flags); #endif + wmb(); t3_write_reg(adap, A_SG_KDOORBELL, F_SELEGRCNTX | V_EGRCNTX(q->cntxt_id)); } @@ -1737,7 +1740,6 @@ static inline int rx_offload(struct t3cdev *tdev, struct sge_rspq *rq, struct sk_buff *skb, struct sk_buff *rx_gather[], unsigned int gather_idx) { - rq->offload_pkts++; skb_reset_mac_header(skb); skb_reset_network_header(skb); skb_reset_transport_header(skb); @@ -2031,6 +2033,7 @@ no_mem: if (eth) rx_eth(adap, q, skb, ethpad); else { + q->offload_pkts++; /* Preserve the RSS info in csum & priority */ skb->csum = rss_hi; skb->priority = rss_lo; |
