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ixgbevf: Combine the logic for post Rx processing into single function

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This patch cleans up ixgbevf_clean_rx_irq() by merging several similar
operations into a new function - ixgbevf_process_skb_fields().

CC: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Emil Tantilov 2014-11-08 01:39:25 +00:00 committed by Jeff Kirsher
parent ec62fe2641
commit dff8052033
2 changed files with 38 additions and 34 deletions
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4
drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
View File

@ -346,8 +346,10 @@ static inline void ixgbevf_write_tail(struct ixgbevf_ring *ring, u32 value)
/* board specific private data structure */
struct ixgbevf_adapter {
struct timer_list watchdog_timer;
/* this field must be first, see ixgbevf_process_skb_fields */
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
struct timer_list watchdog_timer;
struct work_struct reset_task;
struct ixgbevf_q_vector *q_vector[MAX_MSIX_Q_VECTORS];

68
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
View File

@ -327,38 +327,13 @@ static bool ixgbevf_clean_tx_irq(struct ixgbevf_q_vector *q_vector,
return !!budget;
}
/**
* ixgbevf_receive_skb - Send a completed packet up the stack
* @q_vector: structure containing interrupt and ring information
* @skb: packet to send up
* @rx_desc: rx descriptor
**/
static void ixgbevf_receive_skb(struct ixgbevf_q_vector *q_vector,
struct sk_buff *skb,
union ixgbe_adv_rx_desc *rx_desc)
{
struct ixgbevf_adapter *adapter = q_vector->adapter;
bool is_vlan = !!ixgbevf_test_staterr(rx_desc, IXGBE_RXD_STAT_VP);
u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
if (is_vlan && test_bit(tag & VLAN_VID_MASK, adapter->active_vlans))
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL))
napi_gro_receive(&q_vector->napi, skb);
else
netif_rx(skb);
}
/**
* ixgbevf_rx_skb - Helper function to determine proper Rx method
* @q_vector: structure containing interrupt and ring information
* @skb: packet to send up
* @rx_desc: rx descriptor
**/
static void ixgbevf_rx_skb(struct ixgbevf_q_vector *q_vector,
struct sk_buff *skb,
union ixgbe_adv_rx_desc *rx_desc)
struct sk_buff *skb)
{
#ifdef CONFIG_NET_RX_BUSY_POLL
skb_mark_napi_id(skb, &q_vector->napi);
@ -369,8 +344,10 @@ static void ixgbevf_rx_skb(struct ixgbevf_q_vector *q_vector,
return;
}
#endif /* CONFIG_NET_RX_BUSY_POLL */
ixgbevf_receive_skb(q_vector, skb, rx_desc);
if (!(q_vector->adapter->flags & IXGBE_FLAG_IN_NETPOLL))
napi_gro_receive(&q_vector->napi, skb);
else
netif_rx(skb);
}
/* ixgbevf_rx_checksum - indicate in skb if hw indicated a good cksum
@ -407,6 +384,32 @@ static inline void ixgbevf_rx_checksum(struct ixgbevf_ring *ring,
skb->ip_summed = CHECKSUM_UNNECESSARY;
}
/* ixgbevf_process_skb_fields - Populate skb header fields from Rx descriptor
* @rx_ring: rx descriptor ring packet is being transacted on
* @rx_desc: pointer to the EOP Rx descriptor
* @skb: pointer to current skb being populated
*
* This function checks the ring, descriptor, and packet information in
* order to populate the checksum, VLAN, protocol, and other fields within
* the skb.
*/
static void ixgbevf_process_skb_fields(struct ixgbevf_ring *rx_ring,
union ixgbe_adv_rx_desc *rx_desc,
struct sk_buff *skb)
{
ixgbevf_rx_checksum(rx_ring, rx_desc, skb);
if (ixgbevf_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) {
u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan);
unsigned long *active_vlans = netdev_priv(rx_ring->netdev);
if (test_bit(vid & VLAN_VID_MASK, active_vlans))
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
}
skb->protocol = eth_type_trans(skb, rx_ring->netdev);
}
static bool ixgbevf_alloc_mapped_skb(struct ixgbevf_ring *rx_ring,
struct ixgbevf_rx_buffer *bi)
{
@ -576,14 +579,10 @@ static int ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector,
goto next_desc;
}
ixgbevf_rx_checksum(rx_ring, rx_desc, skb);
/* probably a little skewed due to removing CRC */
total_rx_bytes += skb->len;
total_rx_packets++;
skb->protocol = eth_type_trans(skb, rx_ring->netdev);
/* Workaround hardware that can't do proper VEPA multicast
* source pruning.
*/
@ -595,7 +594,10 @@ static int ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector,
goto next_desc;
}
ixgbevf_rx_skb(q_vector, skb, rx_desc);
/* populate checksum, VLAN, and protocol */
ixgbevf_process_skb_fields(rx_ring, rx_desc, skb);
ixgbevf_rx_skb(q_vector, skb);
next_desc:
/* return some buffers to hardware, one at a time is too slow */