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net/enic: pick the right Rx handler after changing MTU

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enic_set_mtu always reverts to the default Rx handler after changing
MTU. Try to use the simpler, non-scatter handler in this case as well.

Fixes: 35e2cb6a1795 ("net/enic: add simple Rx handler")

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
This commit is contained in:
Hyong Youb Kim 2018-07-17 19:02:16 -07:00 committed by Ferruh Yigit
parent 3d416511b6
commit 920aae3f5c
1 changed files with 17 additions and 8 deletions
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25
drivers/net/enic/enic_main.c
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@ -514,6 +514,21 @@ static void enic_prep_wq_for_simple_tx(struct enic *enic, uint16_t queue_idx)
}
}
static void pick_rx_handler(struct enic *enic)
{
struct rte_eth_dev *eth_dev;
/* Use the non-scatter, simplified RX handler if possible. */
eth_dev = enic->rte_dev;
if (enic->rq_count > 0 && enic->rq[0].data_queue_enable == 0) {
PMD_INIT_LOG(DEBUG, " use the non-scatter Rx handler");
eth_dev->rx_pkt_burst = &enic_noscatter_recv_pkts;
} else {
PMD_INIT_LOG(DEBUG, " use the normal Rx handler");
eth_dev->rx_pkt_burst = &enic_recv_pkts;
}
}
int enic_enable(struct enic *enic)
{
unsigned int index;
@ -571,13 +586,7 @@ int enic_enable(struct enic *enic)
eth_dev->tx_pkt_burst = &enic_xmit_pkts;
}
/* Use the non-scatter, simplified RX handler if possible. */
if (enic->rq_count > 0 && enic->rq[0].data_queue_enable == 0) {
PMD_INIT_LOG(DEBUG, " use the non-scatter Rx handler");
eth_dev->rx_pkt_burst = &enic_noscatter_recv_pkts;
} else {
PMD_INIT_LOG(DEBUG, " use the normal Rx handler");
}
pick_rx_handler(enic);
for (index = 0; index < enic->wq_count; index++)
enic_start_wq(enic, index);
@ -1550,7 +1559,7 @@ int enic_set_mtu(struct enic *enic, uint16_t new_mtu)
/* put back the real receive function */
rte_mb();
eth_dev->rx_pkt_burst = enic_recv_pkts;
pick_rx_handler(enic);
rte_mb();
/* restart Rx traffic */