diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_txrx.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx.c | 60 |
1 files changed, 21 insertions, 39 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index aef3c89ee79c..a7e14e98889f 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -1559,24 +1559,6 @@ static bool i40e_alloc_mapped_page(struct i40e_ring *rx_ring, } /** - * i40e_receive_skb - Send a completed packet up the stack - * @rx_ring: rx ring in play - * @skb: packet to send up - * @vlan_tag: vlan tag for packet - **/ -void i40e_receive_skb(struct i40e_ring *rx_ring, - struct sk_buff *skb, u16 vlan_tag) -{ - struct i40e_q_vector *q_vector = rx_ring->q_vector; - - if ((rx_ring->netdev->features & NETIF_F_HW_VLAN_CTAG_RX) && - (vlan_tag & VLAN_VID_MASK)) - __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag); - - napi_gro_receive(&q_vector->napi, skb); -} - -/** * i40e_alloc_rx_buffers - Replace used receive buffers * @rx_ring: ring to place buffers on * @cleaned_count: number of buffers to replace @@ -1793,8 +1775,7 @@ static inline void i40e_rx_hash(struct i40e_ring *ring, * other fields within the skb. **/ void i40e_process_skb_fields(struct i40e_ring *rx_ring, - union i40e_rx_desc *rx_desc, struct sk_buff *skb, - u8 rx_ptype) + union i40e_rx_desc *rx_desc, struct sk_buff *skb) { u64 qword = le64_to_cpu(rx_desc->wb.qword1.status_error_len); u32 rx_status = (qword & I40E_RXD_QW1_STATUS_MASK) >> @@ -1802,6 +1783,8 @@ void i40e_process_skb_fields(struct i40e_ring *rx_ring, u32 tsynvalid = rx_status & I40E_RXD_QW1_STATUS_TSYNVALID_MASK; u32 tsyn = (rx_status & I40E_RXD_QW1_STATUS_TSYNINDX_MASK) >> I40E_RXD_QW1_STATUS_TSYNINDX_SHIFT; + u8 rx_ptype = (qword & I40E_RXD_QW1_PTYPE_MASK) >> + I40E_RXD_QW1_PTYPE_SHIFT; if (unlikely(tsynvalid)) i40e_ptp_rx_hwtstamp(rx_ring->vsi->back, skb, tsyn); @@ -1812,6 +1795,13 @@ void i40e_process_skb_fields(struct i40e_ring *rx_ring, skb_record_rx_queue(skb, rx_ring->queue_index); + if (qword & BIT(I40E_RX_DESC_STATUS_L2TAG1P_SHIFT)) { + u16 vlan_tag = rx_desc->wb.qword0.lo_dword.l2tag1; + + __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), + le16_to_cpu(vlan_tag)); + } + /* modifies the skb - consumes the enet header */ skb->protocol = eth_type_trans(skb, rx_ring->netdev); } @@ -2350,8 +2340,6 @@ static int i40e_clean_rx_irq(struct i40e_ring *rx_ring, int budget) struct i40e_rx_buffer *rx_buffer; union i40e_rx_desc *rx_desc; unsigned int size; - u16 vlan_tag; - u8 rx_ptype; u64 qword; /* return some buffers to hardware, one at a time is too slow */ @@ -2444,18 +2432,11 @@ static int i40e_clean_rx_irq(struct i40e_ring *rx_ring, int budget) /* probably a little skewed due to removing CRC */ total_rx_bytes += skb->len; - qword = le64_to_cpu(rx_desc->wb.qword1.status_error_len); - rx_ptype = (qword & I40E_RXD_QW1_PTYPE_MASK) >> - I40E_RXD_QW1_PTYPE_SHIFT; - /* populate checksum, VLAN, and protocol */ - i40e_process_skb_fields(rx_ring, rx_desc, skb, rx_ptype); - - vlan_tag = (qword & BIT(I40E_RX_DESC_STATUS_L2TAG1P_SHIFT)) ? - le16_to_cpu(rx_desc->wb.qword0.lo_dword.l2tag1) : 0; + i40e_process_skb_fields(rx_ring, rx_desc, skb); i40e_trace(clean_rx_irq_rx, rx_ring, rx_desc, skb); - i40e_receive_skb(rx_ring, skb, vlan_tag); + napi_gro_receive(&rx_ring->q_vector->napi, skb); skb = NULL; /* update budget accounting */ @@ -2667,10 +2648,11 @@ tx_only: if (vsi->back->flags & I40E_TXR_FLAGS_WB_ON_ITR) q_vector->arm_wb_state = false; - /* Work is done so exit the polling mode and re-enable the interrupt */ - napi_complete_done(napi, work_done); - - i40e_update_enable_itr(vsi, q_vector); + /* Exit the polling mode, but don't re-enable interrupts if stack might + * poll us due to busy-polling + */ + if (likely(napi_complete_done(napi, work_done))) + i40e_update_enable_itr(vsi, q_vector); return min(work_done, budget - 1); } @@ -3473,6 +3455,8 @@ static inline int i40e_tx_map(struct i40e_ring *tx_ring, struct sk_buff *skb, tx_desc->cmd_type_offset_bsz = build_ctob(td_cmd, td_offset, size, td_tag); + skb_tx_timestamp(skb); + /* Force memory writes to complete before letting h/w know there * are new descriptors to fetch. * @@ -3526,6 +3510,7 @@ static int i40e_xmit_xdp_ring(struct xdp_frame *xdpf, u16 i = xdp_ring->next_to_use; struct i40e_tx_buffer *tx_bi; struct i40e_tx_desc *tx_desc; + void *data = xdpf->data; u32 size = xdpf->len; dma_addr_t dma; @@ -3533,8 +3518,7 @@ static int i40e_xmit_xdp_ring(struct xdp_frame *xdpf, xdp_ring->tx_stats.tx_busy++; return I40E_XDP_CONSUMED; } - - dma = dma_map_single(xdp_ring->dev, xdpf->data, size, DMA_TO_DEVICE); + dma = dma_map_single(xdp_ring->dev, data, size, DMA_TO_DEVICE); if (dma_mapping_error(xdp_ring->dev, dma)) return I40E_XDP_CONSUMED; @@ -3652,8 +3636,6 @@ static netdev_tx_t i40e_xmit_frame_ring(struct sk_buff *skb, if (tsyn) tx_flags |= I40E_TX_FLAGS_TSYN; - skb_tx_timestamp(skb); - /* always enable CRC insertion offload */ td_cmd |= I40E_TX_DESC_CMD_ICRC; |