Hello Netanel Belgazal,
The patch 1738cd3ed342: "net: ena: Add a driver for Amazon Elastic
Network Adapters (ENA)" from Aug 10, 2016, leads to the following
static checker warning:
drivers/net/ethernet/amazon/ena/ena_ethtool.c:459 ena_flow_hash_to_flow_type()
warn: bitwise AND condition is false here
drivers/net/ethernet/amazon/ena/ena_ethtool.c
454
455 static u32 ena_flow_hash_to_flow_type(u16 hash_fields)
456 {
457 u32 data = 0;
458
459 if (hash_fields & ENA_ADMIN_RSS_L2_DA)
^^^^^^^^^^^^^^^^^^^
This is zero.
460 data |= RXH_L2DA;
461
462 if (hash_fields & ENA_ADMIN_RSS_L3_DA)
463 data |= RXH_IP_DST;
464
465 if (hash_fields & ENA_ADMIN_RSS_L3_SA)
466 data |= RXH_IP_SRC;
467
468 if (hash_fields & ENA_ADMIN_RSS_L4_DP)
469 data |= RXH_L4_B_2_3;
470
471 if (hash_fields & ENA_ADMIN_RSS_L4_SP)
472 data |= RXH_L4_B_0_1;
473
474 return data;
475 }
regards,
dan carpenter
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