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authorDivy Le Ray <divy@chelsio.com>2007-09-05 15:58:20 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:51:04 -0700
commitb4687ff753c2c5c330989efed7cdf1a6bc6b512e (patch)
tree0fdce28a3da7a32c114edacd6cf3be85f823f054 /drivers/net
parent3eea3337a08a2ed2addac1551a9d446f2c16acd5 (diff)
cxgb3 - remove false positive in xgmac workaround
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@chelsio.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/cxgb3/common.h1
-rw-r--r--drivers/net/cxgb3/xgmac.c4
2 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/cxgb3/common.h b/drivers/net/cxgb3/common.h
index ada5e4b89cd8..7e9e43d1074e 100644
--- a/drivers/net/cxgb3/common.h
+++ b/drivers/net/cxgb3/common.h
@@ -513,6 +513,7 @@ 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 1d1c3919ab66..ff9e9dcbd87d 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 */