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author | Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> | 2019-11-07 21:29:06 +0530 |
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committer | David S. Miller <davem@davemloft.net> | 2019-11-07 10:41:59 -0800 |
commit | b1396c2bd67556b8d9a31ea2b26e133cb6c802d3 (patch) | |
tree | 88d477bc9a72360c8d2945f47570f225e894254f /drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | |
parent | cxgb4: rework queue config and MSI-X allocation (diff) | |
download | linux-dev-b1396c2bd67556b8d9a31ea2b26e133cb6c802d3.tar.xz linux-dev-b1396c2bd67556b8d9a31ea2b26e133cb6c802d3.zip |
cxgb4: parse and configure TC-MQPRIO offload
Add logic for validation and configuration of TC-MQPRIO Qdisc
offload. Also, add support to manage EOSW_TXQ, which have 1-to-1
mapping with EOTIDs, and expose them to network stack.
Move common skb validation in Tx path to a separate function and
add minimal Tx path for ETHOFLD. Update Tx queue selection to return
normal NIC Txq to send traffic pattern that can't go through ETHOFLD
Tx path.
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/cxgb4.h')
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h index dbfde3fbfce4..04a81276e9c8 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h @@ -803,6 +803,38 @@ struct sge_uld_txq_info { u16 ntxq; /* # of egress uld queues */ }; +enum sge_eosw_state { + CXGB4_EO_STATE_CLOSED = 0, /* Not ready to accept traffic */ +}; + +struct sge_eosw_desc { + struct sk_buff *skb; /* SKB to free after getting completion */ + dma_addr_t addr[MAX_SKB_FRAGS + 1]; /* DMA mapped addresses */ +}; + +struct sge_eosw_txq { + spinlock_t lock; /* Per queue lock to synchronize completions */ + enum sge_eosw_state state; /* Current ETHOFLD State */ + struct sge_eosw_desc *desc; /* Descriptor ring to hold packets */ + u32 ndesc; /* Number of descriptors */ + u32 pidx; /* Current Producer Index */ + u32 last_pidx; /* Last successfully transmitted Producer Index */ + u32 cidx; /* Current Consumer Index */ + u32 last_cidx; /* Last successfully reclaimed Consumer Index */ + u32 inuse; /* Number of packets held in ring */ + + u32 cred; /* Current available credits */ + u32 ncompl; /* # of completions posted */ + u32 last_compl; /* # of credits consumed since last completion req */ + + u32 eotid; /* Index into EOTID table in software */ + u32 hwtid; /* Hardware EOTID index */ + + u32 hwqid; /* Underlying hardware queue index */ + struct net_device *netdev; /* Pointer to netdevice */ + struct tasklet_struct qresume_tsk; /* Restarts the queue */ +}; + struct sge { struct sge_eth_txq ethtxq[MAX_ETH_QSETS]; struct sge_eth_txq ptptxq; @@ -1044,6 +1076,9 @@ struct adapter { #if IS_ENABLED(CONFIG_THERMAL) struct ch_thermal ch_thermal; #endif + + /* TC MQPRIO offload */ + struct cxgb4_tc_mqprio *tc_mqprio; }; /* Support for "sched-class" command to allow a TX Scheduling Class to be @@ -1895,6 +1930,9 @@ int t4_i2c_rd(struct adapter *adap, unsigned int mbox, int port, void free_rspq_fl(struct adapter *adap, struct sge_rspq *rq, struct sge_fl *fl); void free_tx_desc(struct adapter *adap, struct sge_txq *q, unsigned int n, bool unmap); +void cxgb4_eosw_txq_free_desc(struct adapter *adap, struct sge_eosw_txq *txq, + u32 ndesc); +void cxgb4_ethofld_restart(unsigned long data); void free_txq(struct adapter *adap, struct sge_txq *q); void cxgb4_reclaim_completed_tx(struct adapter *adap, struct sge_txq *q, bool unmap); @@ -1955,4 +1993,6 @@ int cxgb4_update_mac_filt(struct port_info *pi, unsigned int viid, bool persistent, u8 *smt_idx); int cxgb4_get_msix_idx_from_bmap(struct adapter *adap); void cxgb4_free_msix_idx_in_bmap(struct adapter *adap, u32 msix_idx); +int cxgb_open(struct net_device *dev); +int cxgb_close(struct net_device *dev); #endif /* __CXGB4_H__ */ |