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ixgbevf: add support for using order 1 pages to receive large frames

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Based on commit 8649aaef40
("igb: Add support for using order 1 pages to receive large frames")

Add support for using 3K buffers in order 1 page. We are reserving 1K for
now to have space available for future tail room and head room when we
enable build_skb support.

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 16:51:22 -08:00
committed by Jeff Kirsher
parent bc04347f5b
commit f15c5ba5b6
2 changed files with 92 additions and 24 deletions
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52
drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
View File

@@ -89,17 +89,11 @@ struct ixgbevf_rx_queue_stats {
};
enum ixgbevf_ring_state_t {
__IXGBEVF_RX_3K_BUFFER,
__IXGBEVF_TX_DETECT_HANG,
__IXGBEVF_HANG_CHECK_ARMED,
};
#define check_for_tx_hang(ring) \
test_bit(__IXGBEVF_TX_DETECT_HANG, &(ring)->state)
#define set_check_for_tx_hang(ring) \
set_bit(__IXGBEVF_TX_DETECT_HANG, &(ring)->state)
#define clear_check_for_tx_hang(ring) \
clear_bit(__IXGBEVF_TX_DETECT_HANG, &(ring)->state)
struct ixgbevf_ring {
struct ixgbevf_ring *next;
struct net_device *netdev;
@@ -156,12 +150,20 @@ struct ixgbevf_ring {
/* Supported Rx Buffer Sizes */
#define IXGBEVF_RXBUFFER_256 256 /* Used for packet split */
#define IXGBEVF_RXBUFFER_2048 2048
#define IXGBEVF_RXBUFFER_3072 3072
#define IXGBEVF_RX_HDR_SIZE IXGBEVF_RXBUFFER_256
#define IXGBEVF_RX_BUFSZ IXGBEVF_RXBUFFER_2048
#define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
#define IXGBEVF_SKB_PAD (NET_SKB_PAD + NET_IP_ALIGN)
#if (PAGE_SIZE < 8192)
#define IXGBEVF_MAX_FRAME_BUILD_SKB \
(SKB_WITH_OVERHEAD(IXGBEVF_RXBUFFER_2048) - IXGBEVF_SKB_PAD)
#else
#define IXGBEVF_MAX_FRAME_BUILD_SKB IXGBEVF_RXBUFFER_2048
#endif
#define IXGBE_TX_FLAGS_CSUM BIT(0)
#define IXGBE_TX_FLAGS_VLAN BIT(1)
#define IXGBE_TX_FLAGS_TSO BIT(2)
@@ -170,6 +172,40 @@ struct ixgbevf_ring {
#define IXGBE_TX_FLAGS_VLAN_PRIO_MASK 0x0000e000
#define IXGBE_TX_FLAGS_VLAN_SHIFT 16
#define ring_uses_large_buffer(ring) \
test_bit(__IXGBEVF_RX_3K_BUFFER, &(ring)->state)
#define set_ring_uses_large_buffer(ring) \
set_bit(__IXGBEVF_RX_3K_BUFFER, &(ring)->state)
#define clear_ring_uses_large_buffer(ring) \
clear_bit(__IXGBEVF_RX_3K_BUFFER, &(ring)->state)
static inline unsigned int ixgbevf_rx_bufsz(struct ixgbevf_ring *ring)
{
#if (PAGE_SIZE < 8192)
if (ring_uses_large_buffer(ring))
return IXGBEVF_RXBUFFER_3072;
#endif
return IXGBEVF_RXBUFFER_2048;
}
static inline unsigned int ixgbevf_rx_pg_order(struct ixgbevf_ring *ring)
{
#if (PAGE_SIZE < 8192)
if (ring_uses_large_buffer(ring))
return 1;
#endif
return 0;
}
#define ixgbevf_rx_pg_size(_ring) (PAGE_SIZE << ixgbevf_rx_pg_order(_ring))
#define check_for_tx_hang(ring) \
test_bit(__IXGBEVF_TX_DETECT_HANG, &(ring)->state)
#define set_check_for_tx_hang(ring) \
set_bit(__IXGBEVF_TX_DETECT_HANG, &(ring)->state)
#define clear_check_for_tx_hang(ring) \
clear_bit(__IXGBEVF_TX_DETECT_HANG, &(ring)->state)
struct ixgbevf_ring_container {
struct ixgbevf_ring *ring; /* pointer to linked list of rings */
unsigned int total_bytes; /* total bytes processed this int */