diff options
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c')
-rw-r--r-- | drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 116 |
1 files changed, 59 insertions, 57 deletions
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index e71cdde9cb01..149a0b4489be 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -457,6 +457,32 @@ static void ixgbevf_rx_skb(struct ixgbevf_q_vector *q_vector, napi_gro_receive(&q_vector->napi, skb); } +#define IXGBE_RSS_L4_TYPES_MASK \ + ((1ul << IXGBE_RXDADV_RSSTYPE_IPV4_TCP) | \ + (1ul << IXGBE_RXDADV_RSSTYPE_IPV4_UDP) | \ + (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_TCP) | \ + (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_UDP)) + +static inline void ixgbevf_rx_hash(struct ixgbevf_ring *ring, + union ixgbe_adv_rx_desc *rx_desc, + struct sk_buff *skb) +{ + u16 rss_type; + + if (!(ring->netdev->features & NETIF_F_RXHASH)) + return; + + rss_type = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.pkt_info) & + IXGBE_RXDADV_RSSTYPE_MASK; + + if (!rss_type) + return; + + skb_set_hash(skb, le32_to_cpu(rx_desc->wb.lower.hi_dword.rss), + (IXGBE_RSS_L4_TYPES_MASK & (1ul << rss_type)) ? + PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3); +} + /** * ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum * @ring: structure containig ring specific data @@ -506,6 +532,7 @@ static void ixgbevf_process_skb_fields(struct ixgbevf_ring *rx_ring, union ixgbe_adv_rx_desc *rx_desc, struct sk_buff *skb) { + ixgbevf_rx_hash(rx_ring, rx_desc, skb); ixgbevf_rx_checksum(rx_ring, rx_desc, skb); if (ixgbevf_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) { @@ -649,46 +676,6 @@ static void ixgbevf_alloc_rx_buffers(struct ixgbevf_ring *rx_ring, } /** - * ixgbevf_pull_tail - ixgbevf specific version of skb_pull_tail - * @rx_ring: rx descriptor ring packet is being transacted on - * @skb: pointer to current skb being adjusted - * - * This function is an ixgbevf specific version of __pskb_pull_tail. The - * main difference between this version and the original function is that - * this function can make several assumptions about the state of things - * that allow for significant optimizations versus the standard function. - * As a result we can do things like drop a frag and maintain an accurate - * truesize for the skb. - **/ -static void ixgbevf_pull_tail(struct ixgbevf_ring *rx_ring, - struct sk_buff *skb) -{ - struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0]; - unsigned char *va; - unsigned int pull_len; - - /* it is valid to use page_address instead of kmap since we are - * working with pages allocated out of the lomem pool per - * alloc_page(GFP_ATOMIC) - */ - va = skb_frag_address(frag); - - /* we need the header to contain the greater of either ETH_HLEN or - * 60 bytes if the skb->len is less than 60 for skb_pad. - */ - pull_len = eth_get_headlen(va, IXGBEVF_RX_HDR_SIZE); - - /* align pull length to size of long to optimize memcpy performance */ - skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long))); - - /* update all of the pointers */ - skb_frag_size_sub(frag, pull_len); - frag->page_offset += pull_len; - skb->data_len -= pull_len; - skb->tail += pull_len; -} - -/** * ixgbevf_cleanup_headers - Correct corrupted or empty headers * @rx_ring: rx descriptor ring packet is being transacted on * @rx_desc: pointer to the EOP Rx descriptor @@ -721,10 +708,6 @@ static bool ixgbevf_cleanup_headers(struct ixgbevf_ring *rx_ring, } } - /* place header in linear portion of buffer */ - if (skb_is_nonlinear(skb)) - ixgbevf_pull_tail(rx_ring, skb); - /* if eth_skb_pad returns an error the skb was freed */ if (eth_skb_pad(skb)) return true; @@ -765,7 +748,7 @@ static void ixgbevf_reuse_rx_page(struct ixgbevf_ring *rx_ring, static inline bool ixgbevf_page_is_reserved(struct page *page) { - return (page_to_nid(page) != numa_mem_id()) || page->pfmemalloc; + return (page_to_nid(page) != numa_mem_id()) || page_is_pfmemalloc(page); } /** @@ -789,16 +772,19 @@ static bool ixgbevf_add_rx_frag(struct ixgbevf_ring *rx_ring, struct sk_buff *skb) { struct page *page = rx_buffer->page; + unsigned char *va = page_address(page) + rx_buffer->page_offset; unsigned int size = le16_to_cpu(rx_desc->wb.upper.length); #if (PAGE_SIZE < 8192) unsigned int truesize = IXGBEVF_RX_BUFSZ; #else unsigned int truesize = ALIGN(size, L1_CACHE_BYTES); #endif + unsigned int pull_len; - if ((size <= IXGBEVF_RX_HDR_SIZE) && !skb_is_nonlinear(skb)) { - unsigned char *va = page_address(page) + rx_buffer->page_offset; + if (unlikely(skb_is_nonlinear(skb))) + goto add_tail_frag; + if (likely(size <= IXGBEVF_RX_HDR_SIZE)) { memcpy(__skb_put(skb, size), va, ALIGN(size, sizeof(long))); /* page is not reserved, we can reuse buffer as is */ @@ -810,8 +796,21 @@ static bool ixgbevf_add_rx_frag(struct ixgbevf_ring *rx_ring, return false; } + /* we need the header to contain the greater of either ETH_HLEN or + * 60 bytes if the skb->len is less than 60 for skb_pad. + */ + pull_len = eth_get_headlen(va, IXGBEVF_RX_HDR_SIZE); + + /* align pull length to size of long to optimize memcpy performance */ + memcpy(__skb_put(skb, pull_len), va, ALIGN(pull_len, sizeof(long))); + + /* update all of the pointers */ + va += pull_len; + size -= pull_len; + +add_tail_frag: skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page, - rx_buffer->page_offset, size, truesize); + (unsigned long)va & ~PAGE_MASK, size, truesize); /* avoid re-using remote pages */ if (unlikely(ixgbevf_page_is_reserved(page))) @@ -1697,22 +1696,25 @@ static void ixgbevf_setup_vfmrqc(struct ixgbevf_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 vfmrqc = 0, vfreta = 0; - u32 rss_key[10]; u16 rss_i = adapter->num_rx_queues; - int i, j; + u8 i, j; /* Fill out hash function seeds */ - netdev_rss_key_fill(rss_key, sizeof(rss_key)); - for (i = 0; i < 10; i++) - IXGBE_WRITE_REG(hw, IXGBE_VFRSSRK(i), rss_key[i]); + netdev_rss_key_fill(adapter->rss_key, sizeof(adapter->rss_key)); + for (i = 0; i < IXGBEVF_VFRSSRK_REGS; i++) + IXGBE_WRITE_REG(hw, IXGBE_VFRSSRK(i), adapter->rss_key[i]); - /* Fill out redirection table */ - for (i = 0, j = 0; i < 64; i++, j++) { + for (i = 0, j = 0; i < IXGBEVF_X550_VFRETA_SIZE; i++, j++) { if (j == rss_i) j = 0; - vfreta = (vfreta << 8) | (j * 0x1); - if ((i & 3) == 3) + + adapter->rss_indir_tbl[i] = j; + + vfreta |= j << (i & 0x3) * 8; + if ((i & 3) == 3) { IXGBE_WRITE_REG(hw, IXGBE_VFRETA(i >> 2), vfreta); + vfreta = 0; + } } /* Perform hash on these packet types */ |