From 6ee1652051f14d1c110f48a5b3ee037d63d0c2fa Mon Sep 17 00:00:00 2001 From: Yi Zou Date: Mon, 31 Aug 2009 12:34:28 +0000 Subject: [PATCH] ixgbe: Add support for dcbnl_rtnl_ops.setapp/getapp Add support for dcbnl_rtnl_ops.setapp/getapp to set or get the current user priority bitmap for the given application protocol. Currently, 82599 only supports setapp/getapp for Fiber Channel over Ethernet (FCoE) protocol. Signed-off-by: Yi Zou Acked-by: Peter P Waskiewicz Jr Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/ixgbe/ixgbe.h | 4 ++ drivers/net/ixgbe/ixgbe_dcb_nl.c | 60 ++++++++++++++++++++++++++++++ drivers/net/ixgbe/ixgbe_fcoe.c | 64 ++++++++++++++++++++++++++++++++ drivers/net/ixgbe/ixgbe_fcoe.h | 4 ++ drivers/net/ixgbe/ixgbe_main.c | 2 + 5 files changed, 134 insertions(+) diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h index daed0ac60ec6..dd688d45e9cd 100644 --- a/drivers/net/ixgbe/ixgbe.h +++ b/drivers/net/ixgbe/ixgbe.h @@ -452,6 +452,10 @@ extern int ixgbe_fcoe_ddp_get(struct net_device *netdev, u16 xid, extern int ixgbe_fcoe_ddp_put(struct net_device *netdev, u16 xid); extern int ixgbe_fcoe_enable(struct net_device *netdev); extern int ixgbe_fcoe_disable(struct net_device *netdev); +#ifdef CONFIG_IXGBE_DCB +extern u8 ixgbe_fcoe_getapp(struct ixgbe_adapter *adapter); +extern u8 ixgbe_fcoe_setapp(struct ixgbe_adapter *adapter, u8 up); +#endif /* CONFIG_IXGBE_DCB */ #endif /* IXGBE_FCOE */ #endif /* _IXGBE_H_ */ diff --git a/drivers/net/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ixgbe/ixgbe_dcb_nl.c index e05c62ac56b2..47d9dde82a8a 100644 --- a/drivers/net/ixgbe/ixgbe_dcb_nl.c +++ b/drivers/net/ixgbe/ixgbe_dcb_nl.c @@ -480,6 +480,64 @@ static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state) return; } +/** + * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority + * @netdev : the corresponding netdev + * @idtype : identifies the id as ether type or TCP/UDP port number + * @id: id is either ether type or TCP/UDP port number + * + * Returns : on success, returns a non-zero 802.1p user priority bitmap + * otherwise returns 0 as the invalid user priority bitmap to indicate an + * error. + */ +static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id) +{ + u8 rval = 0; + + switch (idtype) { + case DCB_APP_IDTYPE_ETHTYPE: +#ifdef IXGBE_FCOE + if (id == ETH_P_FCOE) + rval = ixgbe_fcoe_getapp(netdev_priv(netdev)); +#endif + break; + case DCB_APP_IDTYPE_PORTNUM: + break; + default: + break; + } + return rval; +} + +/** + * ixgbe_dcbnl_setapp - set the DCBX application user priority + * @netdev : the corresponding netdev + * @idtype : identifies the id as ether type or TCP/UDP port number + * @id: id is either ether type or TCP/UDP port number + * @up: the 802.1p user priority bitmap + * + * Returns : 0 on success or 1 on error + */ +static u8 ixgbe_dcbnl_setapp(struct net_device *netdev, + u8 idtype, u16 id, u8 up) +{ + u8 rval = 1; + + switch (idtype) { + case DCB_APP_IDTYPE_ETHTYPE: +#ifdef IXGBE_FCOE + if (id == ETH_P_FCOE) + rval = ixgbe_fcoe_setapp(netdev_priv(netdev), up); +#endif + break; + case DCB_APP_IDTYPE_PORTNUM: + break; + default: + break; + } + return rval; +} + struct dcbnl_rtnl_ops dcbnl_ops = { .getstate = ixgbe_dcbnl_get_state, .setstate = ixgbe_dcbnl_set_state, @@ -500,5 +558,7 @@ struct dcbnl_rtnl_ops dcbnl_ops = { .setnumtcs = ixgbe_dcbnl_setnumtcs, .getpfcstate = ixgbe_dcbnl_getpfcstate, .setpfcstate = ixgbe_dcbnl_setpfcstate, + .getapp = ixgbe_dcbnl_getapp, + .setapp = ixgbe_dcbnl_setapp, }; diff --git a/drivers/net/ixgbe/ixgbe_fcoe.c b/drivers/net/ixgbe/ixgbe_fcoe.c index 26fe46fb13fb..0607cffbb213 100644 --- a/drivers/net/ixgbe/ixgbe_fcoe.c +++ b/drivers/net/ixgbe/ixgbe_fcoe.c @@ -27,6 +27,9 @@ #include "ixgbe.h" +#ifdef CONFIG_IXGBE_DCB +#include "ixgbe_dcb_82599.h" +#endif /* CONFIG_IXGBE_DCB */ #include #include #include @@ -648,3 +651,64 @@ int ixgbe_fcoe_disable(struct net_device *netdev) out_disable: return rc; } + +#ifdef CONFIG_IXGBE_DCB +/** + * ixgbe_fcoe_getapp - retrieves current user priority bitmap for FCoE + * @adapter : ixgbe adapter + * + * Finds out the corresponding user priority bitmap from the current + * traffic class that FCoE belongs to. Returns 0 as the invalid user + * priority bitmap to indicate an error. + * + * Returns : 802.1p user priority bitmap for FCoE + */ +u8 ixgbe_fcoe_getapp(struct ixgbe_adapter *adapter) +{ + int i; + u8 tc; + u32 up2tc; + + up2tc = IXGBE_READ_REG(&adapter->hw, IXGBE_RTTUP2TC); + for (i = 0; i < MAX_USER_PRIORITY; i++) { + tc = (u8)(up2tc >> (i * IXGBE_RTTUP2TC_UP_SHIFT)); + tc &= (MAX_TRAFFIC_CLASS - 1); + if (adapter->fcoe.tc == tc) + return 1 << i; + } + + return 0; +} + +/** + * ixgbe_fcoe_setapp - sets the user priority bitmap for FCoE + * @adapter : ixgbe adapter + * @up : 802.1p user priority bitmap + * + * Finds out the traffic class from the input user priority + * bitmap for FCoE. + * + * Returns : 0 on success otherwise returns 1 on error + */ +u8 ixgbe_fcoe_setapp(struct ixgbe_adapter *adapter, u8 up) +{ + int i; + u32 up2tc; + + /* valid user priority bitmap must not be 0 */ + if (up) { + /* from user priority to the corresponding traffic class */ + up2tc = IXGBE_READ_REG(&adapter->hw, IXGBE_RTTUP2TC); + for (i = 0; i < MAX_USER_PRIORITY; i++) { + if (up & (1 << i)) { + up2tc >>= (i * IXGBE_RTTUP2TC_UP_SHIFT); + up2tc &= (MAX_TRAFFIC_CLASS - 1); + adapter->fcoe.tc = (u8)up2tc; + return 0; + } + } + } + + return 1; +} +#endif /* CONFIG_IXGBE_DCB */ diff --git a/drivers/net/ixgbe/ixgbe_fcoe.h b/drivers/net/ixgbe/ixgbe_fcoe.h index c5b50026a897..b5dee7b3ef1c 100644 --- a/drivers/net/ixgbe/ixgbe_fcoe.h +++ b/drivers/net/ixgbe/ixgbe_fcoe.h @@ -46,6 +46,9 @@ #define IXGBE_FCBUFF_MIN 4096 /* 4KB min */ #define IXGBE_FCOE_DDP_MAX 512 /* 9 bits xid */ +/* Default traffic class to use for FCoE */ +#define IXGBE_FCOE_DEFTC 3 + /* fcerr */ #define IXGBE_FCERR_BADCRC 0x00100000 @@ -59,6 +62,7 @@ struct ixgbe_fcoe_ddp { }; struct ixgbe_fcoe { + u8 tc; spinlock_t lock; struct pci_pool *pool; struct ixgbe_fcoe_ddp ddp[IXGBE_FCOE_DDP_MAX]; diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index 30a58fbbeed5..f907836eed22 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -3801,6 +3801,8 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter) adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE; adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED; adapter->ring_feature[RING_F_FCOE].indices = 0; + /* Default traffic class to use for FCoE */ + adapter->fcoe.tc = IXGBE_FCOE_DEFTC; #endif /* IXGBE_FCOE */ } -- 2.20.1