From a55667e6f258408f1e7ddcf645d76d67a5ab3d92 Mon Sep 17 00:00:00 2001 From: Prasad Kanneganti Date: Thu, 25 May 2017 10:54:29 -0700 Subject: [PATCH] liquidio: fix inaccurate count of napi-processed rx packets reported to Octeon lio_enable_irq (called by napi poll) is reporting to Octeon an inaccurate count of processed rx packets causing Octeon to eventually stop forwarding packets to the host. Fix it by using this formula for an accurate count: processed rx packets = droq->pkt_count - droq->pkts_pending Also increase SOFT_COMMAND_BUFFER_SIZE to match what the firmware expects. Signed-off-by: Prasad Kanneganti Signed-off-by: Felix Manlunas Signed-off-by: David S. Miller --- drivers/net/ethernet/cavium/liquidio/octeon_device.c | 6 ++++-- drivers/net/ethernet/cavium/liquidio/octeon_iq.h | 2 +- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_device.c b/drivers/net/ethernet/cavium/liquidio/octeon_device.c index b5be7074f3de..3b7cc9320deb 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_device.c +++ b/drivers/net/ethernet/cavium/liquidio/octeon_device.c @@ -1429,13 +1429,15 @@ int lio_get_device_id(void *dev) void lio_enable_irq(struct octeon_droq *droq, struct octeon_instr_queue *iq) { u64 instr_cnt; + u32 pkts_pend; struct octeon_device *oct = NULL; /* the whole thing needs to be atomic, ideally */ if (droq) { + pkts_pend = (u32)atomic_read(&droq->pkts_pending); spin_lock_bh(&droq->lock); - writel(droq->pkt_count, droq->pkts_sent_reg); - droq->pkt_count = 0; + writel(droq->pkt_count - pkts_pend, droq->pkts_sent_reg); + droq->pkt_count = pkts_pend; /* this write needs to be flushed before we release the lock */ mmiowb(); spin_unlock_bh(&droq->lock); diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_iq.h b/drivers/net/ethernet/cavium/liquidio/octeon_iq.h index 5063a12613e5..5c3c8da976f7 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_iq.h +++ b/drivers/net/ethernet/cavium/liquidio/octeon_iq.h @@ -251,7 +251,7 @@ union octeon_instr_64B { /** The size of each buffer in soft command buffer pool */ -#define SOFT_COMMAND_BUFFER_SIZE 1536 +#define SOFT_COMMAND_BUFFER_SIZE 2048 struct octeon_soft_command { /** Soft command buffer info. */ -- 2.20.1