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ixgbevf: add build_skb support 

Add support for build_skb() similar to:
commit 6f429223b3 ("ixgbe: Add support for build_skb")

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Emil Tantilov 2018-01-30 16:51:54 -08:00 committed by Jeff Kirsher
parent 925f5690ff
commit 6d9c02171a
1 changed files with 41 additions and 0 deletions
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41
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
View File

@ -910,6 +910,44 @@ static inline void ixgbevf_irq_enable_queues(struct ixgbevf_adapter *adapter,
IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, qmask); IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, qmask);
} }
static struct sk_buff *ixgbevf_build_skb(struct ixgbevf_ring *rx_ring,
struct ixgbevf_rx_buffer *rx_buffer,
union ixgbe_adv_rx_desc *rx_desc,
unsigned int size)
{
void *va = page_address(rx_buffer->page) + rx_buffer->page_offset;
#if (PAGE_SIZE < 8192)
unsigned int truesize = ixgbevf_rx_pg_size(rx_ring) / 2;
#else
unsigned int truesize = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) +
SKB_DATA_ALIGN(IXGBEVF_SKB_PAD + size);
#endif
struct sk_buff *skb;
/* prefetch first cache line of first page */
prefetch(va);
#if L1_CACHE_BYTES < 128
prefetch(va + L1_CACHE_BYTES);
#endif
/* build an skb to around the page buffer */
skb = build_skb(va - IXGBEVF_SKB_PAD, truesize);
if (unlikely(!skb))
return NULL;
/* update pointers within the skb to store the data */
skb_reserve(skb, IXGBEVF_SKB_PAD);
__skb_put(skb, size);
/* update buffer offset */
#if (PAGE_SIZE < 8192)
rx_buffer->page_offset ^= truesize;
#else
rx_buffer->page_offset += truesize;
#endif
return skb;
}
static int ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector, static int ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector,
struct ixgbevf_ring *rx_ring, struct ixgbevf_ring *rx_ring,
int budget) int budget)
@ -945,6 +983,9 @@ static int ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector,
/* retrieve a buffer from the ring */ /* retrieve a buffer from the ring */
if (skb) if (skb)
ixgbevf_add_rx_frag(rx_ring, rx_buffer, skb, size); ixgbevf_add_rx_frag(rx_ring, rx_buffer, skb, size);
else if (ring_uses_build_skb(rx_ring))
skb = ixgbevf_build_skb(rx_ring, rx_buffer,
rx_desc, size);
else else
skb = ixgbevf_construct_skb(rx_ring, rx_buffer, skb = ixgbevf_construct_skb(rx_ring, rx_buffer,
rx_desc, size); rx_desc, size);