diff options
| author | Sathya Perla <sathya.perla@emulex.com> | 2014-09-02 09:56:55 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-09-02 12:46:00 -0700 |
| commit | c8f64615fb8372844f25199c2aa3c7565e1e9e60 (patch) | |
| tree | c89aa25f5fdb5349e79c5665cdd88b095cb254fa /drivers/net/ethernet/emulex | |
| parent | c5f156def02bffe41bb6c931302c074d00465354 (diff) | |
| download | linux-c8f64615fb8372844f25199c2aa3c7565e1e9e60.tar.bz2 | |
be2net: get rid of TX budget
Enforcing a budget on the TX completion processing in NAPI doesn't
benefit performance in anyway. Just get rid of it.
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/emulex')
| -rw-r--r-- | drivers/net/ethernet/emulex/benet/be.h | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/emulex/benet/be_main.c | 30 |
2 files changed, 11 insertions, 21 deletions
diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index 5ccfce7d616d..d952ca2c0678 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -114,7 +114,6 @@ static inline char *nic_name(struct pci_dev *pdev) #define MAX_ROCE_EQS 5 #define MAX_MSIX_VECTORS 32 #define MIN_MSIX_VECTORS 1 -#define BE_TX_BUDGET 256 #define BE_NAPI_WEIGHT 64 #define MAX_RX_POST BE_NAPI_WEIGHT /* Frags posted at a time */ #define RX_FRAGS_REFILL_WM (RX_Q_LEN - MAX_RX_POST) @@ -200,7 +199,6 @@ struct be_eq_obj { u8 idx; /* array index */ u8 msix_idx; - u16 tx_budget; u16 spurious_intr; struct napi_struct napi; struct be_adapter *adapter; diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index fe007ea4a01c..b31b0f0789db 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -2143,7 +2143,6 @@ static int be_evt_queues_create(struct be_adapter *adapter) napi_hash_add(&eqo->napi); aic = &adapter->aic_obj[i]; eqo->adapter = adapter; - eqo->tx_budget = BE_TX_BUDGET; eqo->idx = i; aic->max_eqd = BE_MAX_EQD; aic->enable = true; @@ -2459,20 +2458,19 @@ static inline void lancer_update_tx_err(struct be_tx_obj *txo, u32 status) } } -static bool be_process_tx(struct be_adapter *adapter, struct be_tx_obj *txo, - int budget, int idx) +static void be_process_tx(struct be_adapter *adapter, struct be_tx_obj *txo, + int idx) { struct be_eth_tx_compl *txcp; - int num_wrbs = 0, work_done; + int num_wrbs = 0, work_done = 0; u32 compl_status; + u16 last_idx; + + while ((txcp = be_tx_compl_get(&txo->cq))) { + last_idx = GET_TX_COMPL_BITS(wrb_index, txcp); + num_wrbs += be_tx_compl_process(adapter, txo, last_idx); + work_done++; - for (work_done = 0; work_done < budget; work_done++) { - txcp = be_tx_compl_get(&txo->cq); - if (!txcp) - break; - num_wrbs += be_tx_compl_process(adapter, txo, - GET_TX_COMPL_BITS(wrb_index, - txcp)); compl_status = GET_TX_COMPL_BITS(status, txcp); if (compl_status) { if (lancer_chip(adapter)) @@ -2497,7 +2495,6 @@ static bool be_process_tx(struct be_adapter *adapter, struct be_tx_obj *txo, tx_stats(txo)->tx_compl += work_done; u64_stats_update_end(&tx_stats(txo)->sync_compl); } - return (work_done < budget); /* Done */ } int be_poll(struct napi_struct *napi, int budget) @@ -2506,17 +2503,12 @@ int be_poll(struct napi_struct *napi, int budget) struct be_adapter *adapter = eqo->adapter; int max_work = 0, work, i, num_evts; struct be_rx_obj *rxo; - bool tx_done; num_evts = events_get(eqo); /* Process all TXQs serviced by this EQ */ - for (i = eqo->idx; i < adapter->num_tx_qs; i += adapter->num_evt_qs) { - tx_done = be_process_tx(adapter, &adapter->tx_obj[i], - eqo->tx_budget, i); - if (!tx_done) - max_work = budget; - } + for (i = eqo->idx; i < adapter->num_tx_qs; i += adapter->num_evt_qs) + be_process_tx(adapter, &adapter->tx_obj[i], i); if (be_lock_napi(eqo)) { /* This loop will iterate twice for EQ0 in which |