diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_txrx.h')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx.h | 69 |
1 files changed, 35 insertions, 34 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.h b/drivers/net/ethernet/intel/i40e/i40e_txrx.h index 6b2b1913527d..b78c810d1835 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.h +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.h @@ -102,8 +102,8 @@ enum i40e_dyn_idx_t { (((pf)->flags & I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE) ? \ I40E_DEFAULT_RSS_HENA_EXPANDED : I40E_DEFAULT_RSS_HENA) -/* Supported Rx Buffer Sizes */ -#define I40E_RXBUFFER_512 512 /* Used for packet split */ +/* Supported Rx Buffer Sizes (a multiple of 128) */ +#define I40E_RXBUFFER_256 256 #define I40E_RXBUFFER_2048 2048 #define I40E_RXBUFFER_3072 3072 /* For FCoE MTU of 2158 */ #define I40E_RXBUFFER_4096 4096 @@ -114,9 +114,28 @@ enum i40e_dyn_idx_t { * reserve 2 more, and skb_shared_info adds an additional 384 bytes more, * this adds up to 512 bytes of extra data meaning the smallest allocation * we could have is 1K. - * i.e. RXBUFFER_512 --> size-1024 slab + * i.e. RXBUFFER_256 --> 960 byte skb (size-1024 slab) + * i.e. RXBUFFER_512 --> 1216 byte skb (size-2048 slab) */ -#define I40E_RX_HDR_SIZE I40E_RXBUFFER_512 +#define I40E_RX_HDR_SIZE I40E_RXBUFFER_256 +#define i40e_rx_desc i40e_32byte_rx_desc + +/** + * i40e_test_staterr - tests bits in Rx descriptor status and error fields + * @rx_desc: pointer to receive descriptor (in le64 format) + * @stat_err_bits: value to mask + * + * This function does some fast chicanery in order to return the + * value of the mask which is really only used for boolean tests. + * The status_error_len doesn't need to be shifted because it begins + * at offset zero. + */ +static inline bool i40e_test_staterr(union i40e_rx_desc *rx_desc, + const u64 stat_err_bits) +{ + return !!(rx_desc->wb.qword1.status_error_len & + cpu_to_le64(stat_err_bits)); +} /* How many Rx Buffers do we bundle into one write to the hardware ? */ #define I40E_RX_BUFFER_WRITE 16 /* Must be power of 2 */ @@ -142,8 +161,6 @@ enum i40e_dyn_idx_t { prefetch((n)); \ } while (0) -#define i40e_rx_desc i40e_32byte_rx_desc - #define I40E_MAX_BUFFER_TXD 8 #define I40E_MIN_TX_LEN 17 @@ -213,10 +230,8 @@ struct i40e_tx_buffer { struct i40e_rx_buffer { struct sk_buff *skb; - void *hdr_buf; dma_addr_t dma; struct page *page; - dma_addr_t page_dma; unsigned int page_offset; }; @@ -245,22 +260,18 @@ struct i40e_rx_queue_stats { enum i40e_ring_state_t { __I40E_TX_FDIR_INIT_DONE, __I40E_TX_XPS_INIT_DONE, - __I40E_RX_PS_ENABLED, - __I40E_RX_16BYTE_DESC_ENABLED, }; -#define ring_is_ps_enabled(ring) \ - test_bit(__I40E_RX_PS_ENABLED, &(ring)->state) -#define set_ring_ps_enabled(ring) \ - set_bit(__I40E_RX_PS_ENABLED, &(ring)->state) -#define clear_ring_ps_enabled(ring) \ - clear_bit(__I40E_RX_PS_ENABLED, &(ring)->state) -#define ring_is_16byte_desc_enabled(ring) \ - test_bit(__I40E_RX_16BYTE_DESC_ENABLED, &(ring)->state) -#define set_ring_16byte_desc_enabled(ring) \ - set_bit(__I40E_RX_16BYTE_DESC_ENABLED, &(ring)->state) -#define clear_ring_16byte_desc_enabled(ring) \ - clear_bit(__I40E_RX_16BYTE_DESC_ENABLED, &(ring)->state) +/* some useful defines for virtchannel interface, which + * is the only remaining user of header split + */ +#define I40E_RX_DTYPE_NO_SPLIT 0 +#define I40E_RX_DTYPE_HEADER_SPLIT 1 +#define I40E_RX_DTYPE_SPLIT_ALWAYS 2 +#define I40E_RX_SPLIT_L2 0x1 +#define I40E_RX_SPLIT_IP 0x2 +#define I40E_RX_SPLIT_TCP_UDP 0x4 +#define I40E_RX_SPLIT_SCTP 0x8 /* struct that defines a descriptor ring, associated with a VSI */ struct i40e_ring { @@ -287,16 +298,7 @@ struct i40e_ring { u16 count; /* Number of descriptors */ u16 reg_idx; /* HW register index of the ring */ - u16 rx_hdr_len; u16 rx_buf_len; - u8 dtype; -#define I40E_RX_DTYPE_NO_SPLIT 0 -#define I40E_RX_DTYPE_HEADER_SPLIT 1 -#define I40E_RX_DTYPE_SPLIT_ALWAYS 2 -#define I40E_RX_SPLIT_L2 0x1 -#define I40E_RX_SPLIT_IP 0x2 -#define I40E_RX_SPLIT_TCP_UDP 0x4 -#define I40E_RX_SPLIT_SCTP 0x8 /* used in interrupt processing */ u16 next_to_use; @@ -330,6 +332,7 @@ struct i40e_ring { struct i40e_q_vector *q_vector; /* Backreference to associated vector */ struct rcu_head rcu; /* to avoid race on free */ + u16 next_to_alloc; } ____cacheline_internodealigned_in_smp; enum i40e_latency_range { @@ -353,9 +356,7 @@ struct i40e_ring_container { #define i40e_for_each_ring(pos, head) \ for (pos = (head).ring; pos != NULL; pos = pos->next) -bool i40e_alloc_rx_buffers_ps(struct i40e_ring *rxr, u16 cleaned_count); -bool i40e_alloc_rx_buffers_1buf(struct i40e_ring *rxr, u16 cleaned_count); -void i40e_alloc_rx_headers(struct i40e_ring *rxr); +bool i40e_alloc_rx_buffers(struct i40e_ring *rxr, u16 cleaned_count); netdev_tx_t i40e_lan_xmit_frame(struct sk_buff *skb, struct net_device *netdev); void i40e_clean_tx_ring(struct i40e_ring *tx_ring); void i40e_clean_rx_ring(struct i40e_ring *rx_ring); |