From: Joshua Hay <joshua.a....@intel.com>
In the very rare case where a packet type is unknown to the driver,
idpf_rx_process_skb_fields would return early without calling
eth_type_trans to set the skb protocol / the network layer handler.
This is especially problematic if tcpdump is running when such a
packet is received, i.e. it would cause a kernel panic.
Instead, call eth_type_trans for every single packet, even when
the packet type is unknown.
Fixes: 3a8845af66ed ("idpf: add RX splitq napi poll support")
Reported-by: Balazs Nemeth <bnem...@redhat.com>
Signed-off-by: Joshua Hay <joshua.a....@intel.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeb...@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kits...@intel.com>
Tested-by: Salvatore Daniele <sdani...@redhat.com>
Signed-off-by: Pavan Kumar Linga <pavan.kumar.li...@intel.com>
---
drivers/net/ethernet/intel/idpf/idpf_txrx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.c
b/drivers/net/ethernet/intel/idpf/idpf_txrx.c
index 2f8ad79ae3f0..017a081d8580 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_txrx.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.c
@@ -2940,6 +2940,8 @@ static int idpf_rx_process_skb_fields(struct idpf_queue
*rxq,
rx_ptype = le16_get_bits(rx_desc->ptype_err_fflags0,
VIRTCHNL2_RX_FLEX_DESC_ADV_PTYPE_M);
+ skb->protocol = eth_type_trans(skb, rxq->vport->netdev);
+
decoded = rxq->vport->rx_ptype_lkup[rx_ptype];
/* If we don't know the ptype we can't do anything else with it. Just
* pass it up the stack as-is.
@@ -2950,8 +2952,6 @@ static int idpf_rx_process_skb_fields(struct idpf_queue
*rxq,
/* process RSS/hash */
idpf_rx_hash(rxq, skb, rx_desc, &decoded);
- skb->protocol = eth_type_trans(skb, rxq->vport->netdev);
-
if (le16_get_bits(rx_desc->hdrlen_flags,
VIRTCHNL2_RX_FLEX_DESC_ADV_RSC_M))
return idpf_rx_rsc(rxq, skb, rx_desc, &decoded);
--
2.43.0
