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Date: Wed, 22 Aug 2007 23:37:49 -0700 From: Divy Le Ray <divy@...lsio.com> To: jeff@...zik.org Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, swise@...ngridcomputing.com Subject: [PATCH 12/11] cxgb3 - remove false positive in xgmac workaround From: Divy Le Ray <divy@...lsio.com> Qualify toggling of xgmac tx enable with not getting pause frames, we might not make forward progress because the peer is sending lots of pause frames. Signed-off-by: Divy Le Ray <divy@...lsio.com> --- drivers/net/cxgb3/common.h | 1 + drivers/net/cxgb3/xgmac.c | 4 +++- 2 files changed, 4 insertions(+), 1 deletions(-) diff --git a/drivers/net/cxgb3/common.h b/drivers/net/cxgb3/common.h index ff867c2..3e5b0db 100644 --- a/drivers/net/cxgb3/common.h +++ b/drivers/net/cxgb3/common.h @@ -514,6 +514,7 @@ struct cmac { u64 rx_mcnt; unsigned int toggle_cnt; unsigned int txen; + u64 rx_pause; struct mac_stats stats; }; diff --git a/drivers/net/cxgb3/xgmac.c b/drivers/net/cxgb3/xgmac.c index 1d1c391..ff9e9dc 100644 --- a/drivers/net/cxgb3/xgmac.c +++ b/drivers/net/cxgb3/xgmac.c @@ -452,6 +452,7 @@ int t3_mac_enable(struct cmac *mac, int which) A_XGM_TX_SPI4_SOP_EOP_CNT + oft))); mac->rx_mcnt = s->rx_frames; + mac->rx_pause = s->rx_pause; mac->rx_xcnt = (G_TXSPI4SOPCNT(t3_read_reg(adap, A_XGM_RX_SPI4_SOP_EOP_CNT + oft))); @@ -504,7 +505,7 @@ int t3b2_mac_watchdog_task(struct cmac *mac) tx_xcnt = 1; /* By default tx_xcnt is making progress */ tx_tcnt = mac->tx_tcnt; /* If tx_mcnt is progressing ignore tx_tcnt */ rx_xcnt = 1; /* By default rx_xcnt is making progress */ - if (tx_mcnt == mac->tx_mcnt) { + if (tx_mcnt == mac->tx_mcnt && mac->rx_pause == s->rx_pause) { tx_xcnt = (G_TXSPI4SOPCNT(t3_read_reg(adap, A_XGM_TX_SPI4_SOP_EOP_CNT + mac->offset))); @@ -560,6 +561,7 @@ out: mac->tx_mcnt = s->tx_frames; mac->rx_xcnt = rx_xcnt; mac->rx_mcnt = s->rx_frames; + mac->rx_pause = s->rx_pause; if (status == 1) { t3_write_reg(adap, A_XGM_TX_CTRL + mac->offset, 0); t3_read_reg(adap, A_XGM_TX_CTRL + mac->offset); /* flush */ - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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