commit 4b0d29dcfca9eafbf6e940862ab022df3ef2dd6f
author Ben Hutchings <bhutchings@solarflare.com> Sun Nov 29 03:42:18 2009 +0000
committer David S. Miller <davem@davemloft.net> Sun Nov 29 16:46:26 2009 -0800
tree 13af38825d9c0f290f6486f2ae38dc8c55061723
parent 674979d33566ab7e524e25fdc227923e27a3fb78

sfc: Turn pause frame generation on and off at the MAC, not the RX FIFO

Pause frame generation is gated by both RX_XOFF_MAC_EN and an enable
bit in each MAC.  RX_XOFF_MAC_EN bit always reads back as 0 so we need
to set it correctly every time we modify RX_CFG_REG.  Simplify this by
always setting it to 1 and only changing the enable bits in the MACs.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/sfc/falcon_xmac.c

diff --git a/drivers/net/sfc/falcon_xmac.c b/drivers/net/sfc/falcon_xmac.c
index 1523efd..60dc097 100644
--- a/drivers/net/sfc/falcon_xmac.c
+++ b/drivers/net/sfc/falcon_xmac.c
@@ -148,6 +148,7 @@
 	unsigned int max_frame_len;
 	efx_oword_t reg;
 	bool rx_fc = !!(efx->link_state.fc & EFX_FC_RX);
+	bool tx_fc = !!(efx->link_state.fc & EFX_FC_TX);
 
 	/* Configure MAC  - cut-thru mode is hard wired on */
 	EFX_POPULATE_OWORD_3(reg,
@@ -162,7 +163,7 @@
 			     FRF_AB_XM_TX_PRMBL, 1,
 			     FRF_AB_XM_AUTO_PAD, 1,
 			     FRF_AB_XM_TXCRC, 1,
-			     FRF_AB_XM_FCNTL, 1,
+			     FRF_AB_XM_FCNTL, tx_fc,
 			     FRF_AB_XM_IPG, 0x3);
 	efx_writeo(efx, &reg, FR_AB_XM_TX_CFG);