diff options
| author | Prasad Kanneganti <prasad.kanneganti@cavium.com> | 2017-05-25 20:54:29 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-05-26 21:41:48 +0300 |
| commit | a55667e6f258408f1e7ddcf645d76d67a5ab3d92 (patch) | |
| tree | cff0f92b50f59ee2bde2f953881942cdd7e96ff5 /drivers/net/ethernet/cavium/liquidio/octeon_device.c | |
| parent | d5c7d9b934dc07261e97088681e3753b3f5eba80 (diff) | |
| download | linux-a55667e6f258408f1e7ddcf645d76d67a5ab3d92.tar.xz | |
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 <prasad.kanneganti@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cavium/liquidio/octeon_device.c')
| -rw-r--r-- | drivers/net/ethernet/cavium/liquidio/octeon_device.c | 6 |
1 files changed, 4 insertions, 2 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); |