xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ixgbe: Update adaptive ITR algorithm

Browse Source 
The following change is meant to update the adaptive ITR algorithm to
better support the needs of the network. Specifically with this change what
I have done is make it so that our ITR algorithm will try to prevent either
starving a socket buffer for memory in the case of Tx, or overrunning an Rx
socket buffer on receive.

In addition a side effect of the calculations used is that we should
function better with new features such as XDP which can handle small
packets at high rates without needing to lock us into NAPI polling mode.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck
2017-09-25 14:55:36 -07:00
committed by Jeff Kirsher
parent c3aec05dfe
commit b4ded8327f
3 changed files with 179 additions and 56 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/net/ethernet/intel/ixgbe/ixgbe.h
View File

@@ -435,8 +435,15 @@ static inline unsigned int ixgbe_rx_pg_order(struct ixgbe_ring *ring)
}
#define ixgbe_rx_pg_size(_ring) (PAGE_SIZE << ixgbe_rx_pg_order(_ring))
#define IXGBE_ITR_ADAPTIVE_MIN_INC 2
#define IXGBE_ITR_ADAPTIVE_MIN_USECS 10
#define IXGBE_ITR_ADAPTIVE_MAX_USECS 126
#define IXGBE_ITR_ADAPTIVE_LATENCY 0x80
#define IXGBE_ITR_ADAPTIVE_BULK 0x00
struct ixgbe_ring_container {
struct ixgbe_ring *ring; /* pointer to linked list of rings */
unsigned long next_update; /* jiffies value of last update */
unsigned int total_bytes; /* total bytes processed this int */
unsigned int total_packets; /* total packets processed this int */
u16 work_limit; /* total work allowed per interrupt */