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authorBarak Witkowski <barak@broadcom.com>2012-12-05 23:04:03 +0000
committerDavid S. Miller <davem@davemloft.net>2012-12-07 12:53:49 -0500
commitc63da990cd63153ce5203f96822638a7ef0f9bf7 (patch)
treeff99d59bf8d08e978acc6aef42c0d684613689bc /drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
parent6ded7cd605502eff7341bbd912ebc90c3674c764 (diff)
bnx2x: Prevent link flaps when booting from SAN.
It is possible that the driver is configured to operate with a certain link configuration which differs from the link's configuration during boot from SAN - this would cause the driver to flap the link. Said flap may be missed by specific switches, causing dcbx convergence to be too long and boot sequence to fail. Convergence is longer because switch ignores new dcbx packets due to counters mismatch, as only host side reset the counters due to the link flap. This patch causes the driver to ignore user's initial configuration during boot from SAN, and continues with the existing link configuration. Signed-off-by: Barak Witkowski <barak@broadcom.com> Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c')
-rw-r--r--drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index 8ab1492cedd..67baddd13a6 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -2396,6 +2396,7 @@ int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
if (bp->port.pmf)
bnx2x_initial_phy_init(bp, load_mode);
+ bp->link_params.feature_config_flags &= ~FEATURE_CONFIG_BOOT_FROM_SAN;
/* Start fast path */