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| author | David S. Miller <davem@davemloft.net> | 2019-03-29 03:04:29 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-03-29 03:04:29 +0300 |
| commit | 577dd43a17b2586bded5b691f30a853e35014a69 (patch) | |
| tree | 209ec324c54aa74710dbf84a70c32e15337b4ad1 | |
| parent | 355b98553789b646ed97ad801a619ff898471b92 (diff) | |
| parent | c3e1f7fff69c78169c8ac40cc74ac4307f74e36d (diff) | |
| download | linux-577dd43a17b2586bded5b691f30a853e35014a69.tar.xz | |
Merge branch 'nfp-fix-retcode-and-disable-netpoll-on-representors'
Jakub Kicinski says:
====================
nfp: fix retcode and disable netpoll on representors
This series avoids a potential crash on nfp representor devices
when netpoll is in use. If transmitting the frame through underlying
vNIC fails we'd return an error code (by passing on error code from
__dev_queue_xmit()) and cause double free in netpoll code.
Fix the error code and disable netpoll on reprs altogether.
IRQ-safety of locking the queues and calling __dev_queue_xmit()
is questionable.
Big thanks to John Hurley for debugging and narrowing down
the trace log after I gave up! :)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/nfp_net_repr.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c index d2c803bb4e56..94d228c04496 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c @@ -195,7 +195,7 @@ static netdev_tx_t nfp_repr_xmit(struct sk_buff *skb, struct net_device *netdev) ret = dev_queue_xmit(skb); nfp_repr_inc_tx_stats(netdev, len, ret); - return ret; + return NETDEV_TX_OK; } static int nfp_repr_stop(struct net_device *netdev) @@ -383,7 +383,7 @@ int nfp_repr_init(struct nfp_app *app, struct net_device *netdev, netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6); netdev->gso_max_segs = NFP_NET_LSO_MAX_SEGS; - netdev->priv_flags |= IFF_NO_QUEUE; + netdev->priv_flags |= IFF_NO_QUEUE | IFF_DISABLE_NETPOLL; netdev->features |= NETIF_F_LLTX; if (nfp_app_has_tc(app)) { |