diff options
Diffstat (limited to 'drivers/net/ethernet/airoha/airoha_eth.c')
| -rw-r--r-- | drivers/net/ethernet/airoha/airoha_eth.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/net/ethernet/airoha/airoha_eth.c b/drivers/net/ethernet/airoha/airoha_eth.c index 81ea01a652b9..433a646e9831 100644 --- a/drivers/net/ethernet/airoha/airoha_eth.c +++ b/drivers/net/ethernet/airoha/airoha_eth.c @@ -1710,7 +1710,9 @@ static void airhoha_set_gdm2_loopback(struct airoha_gdm_port *port) airoha_fe_wr(eth, REG_GDM_RXCHN_EN(2), 0xffff); airoha_fe_rmw(eth, REG_GDM_LPBK_CFG(2), LPBK_CHAN_MASK | LPBK_MODE_MASK | LPBK_EN_MASK, - FIELD_PREP(LPBK_CHAN_MASK, chan) | LPBK_EN_MASK); + FIELD_PREP(LPBK_CHAN_MASK, chan) | + LBK_GAP_MODE_MASK | LBK_LEN_MODE_MASK | + LBK_CHAN_MODE_MASK | LPBK_EN_MASK); airoha_fe_rmw(eth, REG_GDM_LEN_CFG(2), GDM_SHORT_LEN_MASK | GDM_LONG_LEN_MASK, FIELD_PREP(GDM_SHORT_LEN_MASK, 60) | @@ -1871,6 +1873,20 @@ static u32 airoha_get_dsa_tag(struct sk_buff *skb, struct net_device *dev) #endif } +static bool airoha_dev_tx_queue_busy(struct airoha_queue *q, u32 nr_frags) +{ + u32 tail = q->tail <= q->head ? q->tail + q->ndesc : q->tail; + u32 index = q->head + nr_frags; + + /* completion napi can free out-of-order tx descriptors if hw QoS is + * enabled and packets with different priorities are queued to the same + * DMA ring. Take into account possible out-of-order reports checking + * if the tx queue is full using circular buffer head/tail pointers + * instead of the number of queued packets. + */ + return index >= tail; +} + static netdev_tx_t airoha_dev_xmit(struct sk_buff *skb, struct net_device *dev) { @@ -1924,7 +1940,7 @@ static netdev_tx_t airoha_dev_xmit(struct sk_buff *skb, txq = netdev_get_tx_queue(dev, qid); nr_frags = 1 + skb_shinfo(skb)->nr_frags; - if (q->queued + nr_frags > q->ndesc) { + if (airoha_dev_tx_queue_busy(q, nr_frags)) { /* not enough space in the queue */ netif_tx_stop_queue(txq); spin_unlock_bh(&q->lock); |