From: Dany Madden drt@linux.ibm.com
[ Upstream commit a6f2fe5f108c11ff8023d07f9c00cc3c9c3203b8 ]
The supported indirect subcrq entries on Power8 is 16. Power9 supports 128. Redefined this value to 16 to minimize the driver from having to reset when migrating between Power9 and Power8. In our rx/tx performance testing, we found no performance difference between 16 and 128 at this time.
Fixes: f019fb6392e5 ("ibmvnic: Introduce indirect subordinate Command Response Queue buffer") Signed-off-by: Dany Madden drt@linux.ibm.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/ibm/ibmvnic.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/ibm/ibmvnic.h b/drivers/net/ethernet/ibm/ibmvnic.h index 3cccbba703658..72fea3b1c87d9 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.h +++ b/drivers/net/ethernet/ibm/ibmvnic.h @@ -31,7 +31,7 @@ #define IBMVNIC_BUFFS_PER_POOL 100 #define IBMVNIC_MAX_QUEUES 16 #define IBMVNIC_MAX_QUEUE_SZ 4096 -#define IBMVNIC_MAX_IND_DESCS 128 +#define IBMVNIC_MAX_IND_DESCS 16 #define IBMVNIC_IND_ARR_SZ (IBMVNIC_MAX_IND_DESCS * 32)
#define IBMVNIC_TSO_BUF_SZ 65536