ixgbe: Modify 82599 HWRSC statistics counters
Divide 82599 HWRSC counters into aggregated and flushed to count number of
packets getting coalesced per TCP connection.
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index ebcec30..ffd1f16 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -729,12 +729,14 @@
/**
* ixgbe_transform_rsc_queue - change rsc queue into a full packet
* @skb: pointer to the last skb in the rsc queue
+ * @count: pointer to number of packets coalesced in this context
*
* This function changes a queue full of hw rsc buffers into a completed
* packet. It uses the ->prev pointers to find the first packet and then
* turns it into the frag list owner.
**/
-static inline struct sk_buff *ixgbe_transform_rsc_queue(struct sk_buff *skb)
+static inline struct sk_buff *ixgbe_transform_rsc_queue(struct sk_buff *skb,
+ u64 *count)
{
unsigned int frag_list_size = 0;
@@ -743,6 +745,7 @@
frag_list_size += skb->len;
skb->prev = NULL;
skb = prev;
+ *count += 1;
}
skb_shinfo(skb)->frag_list = skb->next;
@@ -845,14 +848,20 @@
u32 nextp = (staterr & IXGBE_RXDADV_NEXTP_MASK) >>
IXGBE_RXDADV_NEXTP_SHIFT;
next_buffer = &rx_ring->rx_buffer_info[nextp];
- rx_ring->rsc_count += (rsc_count - 1);
} else {
next_buffer = &rx_ring->rx_buffer_info[i];
}
if (staterr & IXGBE_RXD_STAT_EOP) {
if (skb->prev)
- skb = ixgbe_transform_rsc_queue(skb);
+ skb = ixgbe_transform_rsc_queue(skb, &(rx_ring->rsc_count));
+ if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
+ if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED)
+ rx_ring->rsc_count += skb_shinfo(skb)->nr_frags;
+ else
+ rx_ring->rsc_count++;
+ rx_ring->rsc_flush++;
+ }
rx_ring->stats.packets++;
rx_ring->stats.bytes += skb->len;
} else {
@@ -4474,14 +4483,18 @@
u64 total_mpc = 0;
u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
- if (hw->mac.type == ixgbe_mac_82599EB) {
+ if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
u64 rsc_count = 0;
+ u64 rsc_flush = 0;
for (i = 0; i < 16; i++)
adapter->hw_rx_no_dma_resources +=
IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
- for (i = 0; i < adapter->num_rx_queues; i++)
+ for (i = 0; i < adapter->num_rx_queues; i++) {
rsc_count += adapter->rx_ring[i].rsc_count;
- adapter->rsc_count = rsc_count;
+ rsc_flush += adapter->rx_ring[i].rsc_flush;
+ }
+ adapter->rsc_total_count = rsc_count;
+ adapter->rsc_total_flush = rsc_flush;
}
adapter->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);