net: fix DCB setstate to return success/failure

PATCH Applied Jeff Kirsher 2 participants 6 messages Dec 20, 2008 – Dec 22, 2008

Subsystems (2)

Networking Network drivers

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Jeff Kirsher

author

2008-12-20 00:15 UTC #0 lore raw

PATCH 1/3 net: fix DCB setstate to return success/failure

From: Don Skidmore <[email protected]>

Data Center Bridging (DCB) had no way to know if setstate had failed in the driver. This patch enables dcb netlink code to handle the status for the DCB setstate interface. Likewise it allows the driver to return a failed status if MSI-X isn't enabled.

Signed-off-by Don Skidmore <[email protected]>

Signed-off-by Eric W Multanen <[email protected]>

Signed-off-by Jeff Kirsher <[email protected]>

---

 drivers/net/ixgbe/ixgbe_dcb_nl.c |   52 +++++++++++++++++++++-----------------
 include/net/dcbnl.h              |    2 +
 net/dcb/dcbnl.c                  |    5 +---
 3 files changed, 32 insertions(+), 27 deletions(-)

drivers/net/ixgbe/ixgbe_dcb_nl.c +29 ~~-23~~

index 615c280..7d158a5 100644
@@ -124,39 +124,45 @@ static u16 ixgbe_dcb_select_queue(struct net_device *dev, struct sk_buff *skb)
 	return 0;
 }
 
-static void ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
+static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
 {
+	u8 err = 0;
 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
 
 	DPRINTK(DRV, INFO, "Set DCB Admin Mode.\n");
 
 	if (state > 0) {
 		/* Turn on DCB */
-		if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
-			return;
-		} else {
-			if (netif_running(netdev))
-				netdev->stop(netdev);
-			ixgbe_reset_interrupt_capability(adapter);
-			ixgbe_napi_del_all(adapter);
-			kfree(adapter->tx_ring);
-			kfree(adapter->rx_ring);
-			adapter->tx_ring = NULL;
-			adapter->rx_ring = NULL;
-			netdev->select_queue = &ixgbe_dcb_select_queue;
+		if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
+			goto out;
 
-			adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
-			adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
-			ixgbe_init_interrupt_scheme(adapter);
-			ixgbe_napi_add_all(adapter);
-			if (netif_running(netdev))
-				netdev->open(netdev);
+		if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
+			DPRINTK(DRV, ERR, "Enable failed, needs MSI-X\n");
+			err = 1;
+			goto out;
 		}
+
+		if (netif_running(netdev))
+			netdev->netdev_ops->ndo_stop(netdev);
+		ixgbe_reset_interrupt_capability(adapter);
+		ixgbe_napi_del_all(adapter);
+		kfree(adapter->tx_ring);
+		kfree(adapter->rx_ring);
+		adapter->tx_ring = NULL;
+		adapter->rx_ring = NULL;
+		netdev->select_queue = &ixgbe_dcb_select_queue;
+
+		adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
+		adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
+		ixgbe_init_interrupt_scheme(adapter);
+		ixgbe_napi_add_all(adapter);
+		if (netif_running(netdev))
+			netdev->netdev_ops->ndo_open(netdev);
 	} else {
 		/* Turn off DCB */
 		if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 			if (netif_running(netdev))
-				netdev->stop(netdev);
+				netdev->netdev_ops->ndo_stop(netdev);
 			ixgbe_reset_interrupt_capability(adapter);
 			ixgbe_napi_del_all(adapter);
 			kfree(adapter->tx_ring);

@@ -170,11 +176,11 @@ static void ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
 			ixgbe_init_interrupt_scheme(adapter);
 			ixgbe_napi_add_all(adapter);
 			if (netif_running(netdev))
-				netdev->open(netdev);
-		} else {
-			return;
+				netdev->netdev_ops->ndo_open(netdev);
 		}
 	}
+out:
+	return err;
 }
 
 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,

include/net/dcbnl.h +1 -1

index 91e0a3d..775cfc8 100644
@@ -26,7 +26,7 @@
  */
 struct dcbnl_rtnl_ops {
 	u8   (*getstate)(struct net_device *);
-	void (*setstate)(struct net_device *, u8);
+	u8   (*setstate)(struct net_device *, u8);
 	void (*getpermhwaddr)(struct net_device *, u8 *);
 	void (*setpgtccfgtx)(struct net_device *, int, u8, u8, u8, u8);
 	void (*setpgbwgcfgtx)(struct net_device *, int, u8);

net/dcb/dcbnl.c +2 -3

index a125406..fc88fc4 100644
@@ -714,9 +714,8 @@ static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb,
 
 	value = nla_get_u8(tb[DCB_ATTR_STATE]);
 
-	netdev->dcbnl_ops->setstate(netdev, value);
-
-	ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE,
+	ret = dcbnl_reply(netdev->dcbnl_ops->setstate(netdev, value),
+	                  RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE,
 	                  pid, seq, flags);
 
 	return ret;

Jeff Kirsher

author

2008-12-20 00:15 UTC #1 lore raw

PATCH 2/3 net: add DCNA attribute to the BCN interface for DCB

From: Don Skidmore <[email protected]>

Adds the Backward Congestion Notification Address (BCNA) attribute to the Backward Congestion Notification (BCN) interface for Data Center Bridging (DCB), which was missing. Receive the BCNA attribute in the ixgbe driver. The BCNA attribute is for a switch to inform the endstation about the physical port identification in order to support BCN on aggregated links.

Signed-off-by Don Skidmore <[email protected]>

Signed-off-by Eric W Multanen <[email protected]>

Signed-off-by Jeff Kirsher <[email protected]>

---

 drivers/net/ixgbe/ixgbe_dcb_nl.c |   20 ++++++++++++++++++++
 include/linux/dcbnl.h            |    2 ++
 net/dcb/dcbnl.c                  |    6 ++++--
 3 files changed, 26 insertions(+), 2 deletions(-)

drivers/net/ixgbe/ixgbe_dcb_nl.c +20 -0

index 7d158a5..8ac639d 100644
@@ -93,6 +93,8 @@ int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
 		dst_dcb_cfg->bcn.rp_admin_mode[i - DCB_BCN_ATTR_RP_0] =
 			src_dcb_cfg->bcn.rp_admin_mode[i - DCB_BCN_ATTR_RP_0];
 	}
+	dst_dcb_cfg->bcn.bcna_option[0] = src_dcb_cfg->bcn.bcna_option[0];
+	dst_dcb_cfg->bcn.bcna_option[1] = src_dcb_cfg->bcn.bcna_option[1];
 	dst_dcb_cfg->bcn.rp_alpha = src_dcb_cfg->bcn.rp_alpha;
 	dst_dcb_cfg->bcn.rp_beta = src_dcb_cfg->bcn.rp_beta;
 	dst_dcb_cfg->bcn.rp_gd = src_dcb_cfg->bcn.rp_gd;

@@ -457,6 +459,12 @@ static void ixgbe_dcbnl_getbcncfg(struct net_device *netdev, int enum_index,
 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
 
 	switch (enum_index) {
+	case DCB_BCN_ATTR_BCNA_0:
+		*setting = adapter->dcb_cfg.bcn.bcna_option[0];
+		break;
+	case DCB_BCN_ATTR_BCNA_1:
+		*setting = adapter->dcb_cfg.bcn.bcna_option[1];
+		break;
 	case DCB_BCN_ATTR_ALPHA:
 		*setting = adapter->dcb_cfg.bcn.rp_alpha;
 		break;

@@ -516,6 +524,18 @@ static void ixgbe_dcbnl_setbcncfg(struct net_device *netdev, int enum_index,
 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
 
 	switch (enum_index) {
+	case DCB_BCN_ATTR_BCNA_0:
+		adapter->temp_dcb_cfg.bcn.bcna_option[0] = setting;
+		if (adapter->temp_dcb_cfg.bcn.bcna_option[0] !=
+			adapter->dcb_cfg.bcn.bcna_option[0])
+			adapter->dcb_set_bitmap |= BIT_BCN;
+		break;
+	case DCB_BCN_ATTR_BCNA_1:
+		adapter->temp_dcb_cfg.bcn.bcna_option[1] = setting;
+		if (adapter->temp_dcb_cfg.bcn.bcna_option[1] !=
+			adapter->dcb_cfg.bcn.bcna_option[1])
+			adapter->dcb_set_bitmap |= BIT_BCN;
+		break;
 	case DCB_BCN_ATTR_ALPHA:
 		adapter->temp_dcb_cfg.bcn.rp_alpha = setting;
 		if (adapter->temp_dcb_cfg.bcn.rp_alpha !=

include/linux/dcbnl.h +2 -0

index e73a614..b0ef274 100644
@@ -305,6 +305,8 @@ enum dcbnl_bcn_attrs{
 	DCB_BCN_ATTR_RP_7,
 	DCB_BCN_ATTR_RP_ALL,
 
+	DCB_BCN_ATTR_BCNA_0,
+	DCB_BCN_ATTR_BCNA_1,
 	DCB_BCN_ATTR_ALPHA,
 	DCB_BCN_ATTR_BETA,
 	DCB_BCN_ATTR_GD,

net/dcb/dcbnl.c +4 -2

index fc88fc4..5dbfe5f 100644
@@ -140,6 +140,8 @@ static struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
 	[DCB_BCN_ATTR_RP_6]         = {.type = NLA_U8},
 	[DCB_BCN_ATTR_RP_7]         = {.type = NLA_U8},
 	[DCB_BCN_ATTR_RP_ALL]       = {.type = NLA_FLAG},
+	[DCB_BCN_ATTR_BCNA_0]       = {.type = NLA_U32},
+	[DCB_BCN_ATTR_BCNA_1]       = {.type = NLA_U32},
 	[DCB_BCN_ATTR_ALPHA]        = {.type = NLA_U32},
 	[DCB_BCN_ATTR_BETA]         = {.type = NLA_U32},
 	[DCB_BCN_ATTR_GD]           = {.type = NLA_U32},

@@ -922,7 +924,7 @@ static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
 			goto err_bcn;
 	}
 
-	for (i = DCB_BCN_ATTR_ALPHA; i <= DCB_BCN_ATTR_RI; i++) {
+	for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
 		if (!getall && !bcn_tb[i])
 			continue;

@@ -980,7 +982,7 @@ static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb,
 			data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
 	}
 
-	for (i = DCB_BCN_ATTR_ALPHA; i <= DCB_BCN_ATTR_RI; i++) {
+	for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
 		if (data[i] == NULL)
 			continue;
 		value_int = nla_get_u32(data[i]);

David Miller

maintainer Applied

2008-12-22 04:10 UTC #2 lore raw

Re: [NET-NEXT PATCH 2/3] net: add DCNA attribute to the BCN interface for DCB

From: Jeff Kirsher <[email protected]>
Date: Fri, 19 Dec 2008 16:15:00 -0800

Quoted 9 lines

Adds the Backward Congestion Notification Address (BCNA) attribute to the Backward Congestion Notification (BCN) interface for Data Center Bridging (DCB), which was missing. Receive the BCNA attribute in the ixgbe driver. The BCNA attribute is for a switch to inform the endstation about the physical port identification in order to support BCN on aggregated links.
Signed-off-by Don Skidmore <[email protected]>
Signed-off-by Eric W Multanen <[email protected]>
Signed-off-by Jeff Kirsher <[email protected]>

Applied.

Jeff Kirsher

author

2008-12-20 00:15 UTC #3 lore raw

PATCH 3/3 ixgbe: fix the display of DCB control stats in ethtool

In reply to Jeff Kirsher

From: Don Skidmore <[email protected]>

Priority flow contol statistics for Data Center Bridging (DCB) weren't included in ethtool. This patch adds them.

Signed-off-by Don Skidmore <[email protected]>

Signed-off-by Eric W Multanen <[email protected]>

Signed-off-by Jeff Kirsher <[email protected]>

---

 drivers/net/ixgbe/ixgbe_ethtool.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

drivers/net/ixgbe/ixgbe_ethtool.c +7 -0

index ad9759d..849c1fe 100644
@@ -881,8 +881,15 @@ static void ixgbe_get_strings(struct net_device *netdev, u32 stringset,
 		if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 			for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) {
 				sprintf(p, "tx_pb_%u_pxon", i);
+				p += ETH_GSTRING_LEN;
+				sprintf(p, "tx_pb_%u_pxoff", i);
+				p += ETH_GSTRING_LEN;
 			}
 			for (i = 0; i < MAX_RX_PACKET_BUFFERS; i++) {
+				sprintf(p, "rx_pb_%u_pxon", i);
+				p += ETH_GSTRING_LEN;
+				sprintf(p, "rx_pb_%u_pxoff", i);
+				p += ETH_GSTRING_LEN;
 			}
 		}
 		/* BUG_ON(p - data != IXGBE_STATS_LEN * ETH_GSTRING_LEN); */

David Miller

maintainer

2008-12-22 04:11 UTC #4 lore raw

Re: [NET-NEXT PATCH 3/3] ixgbe: fix the display of DCB control stats in ethtool

From: Jeff Kirsher <[email protected]>
Date: Fri, 19 Dec 2008 16:15:20 -0800

Quoted 6 lines

Priority flow contol statistics for Data Center Bridging (DCB) weren't included in ethtool. This patch adds them.
Signed-off-by Don Skidmore <[email protected]>
Signed-off-by Eric W Multanen <[email protected]>
Signed-off-by Jeff Kirsher <[email protected]>

Also applied, thanks.

David Miller

maintainer Applied

2008-12-22 04:10 UTC #5 lore raw

In reply to Jeff Kirsher

From: Jeff Kirsher <[email protected]>
Date: Fri, 19 Dec 2008 16:14:38 -0800

Quoted 8 lines

Data Center Bridging (DCB) had no way to know if setstate had failed in the driver. This patch enables dcb netlink code to handle the status for the DCB setstate interface. Likewise it allows the driver to return a failed status if MSI-X isn't enabled.
Signed-off-by Don Skidmore <[email protected]>
Signed-off-by Eric W Multanen <[email protected]>
Signed-off-by Jeff Kirsher <[email protected]>

Applied.