diff options
Diffstat (limited to 'net/ethtool/common.c')
| -rw-r--r-- | net/ethtool/common.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/net/ethtool/common.c b/net/ethtool/common.c index 459cf25e763e..4dcb4194f3ce 100644 --- a/net/ethtool/common.c +++ b/net/ethtool/common.c @@ -806,6 +806,21 @@ out_free: return rc; } +/* Check if fields configured for flow hash are symmetric - if src is included + * so is dst and vice versa. + */ +int ethtool_rxfh_config_is_sym(u64 rxfh) +{ + bool sym; + + sym = rxfh == (rxfh & (RXH_IP_SRC | RXH_IP_DST | + RXH_L4_B_0_1 | RXH_L4_B_2_3)); + sym &= !!(rxfh & RXH_IP_SRC) == !!(rxfh & RXH_IP_DST); + sym &= !!(rxfh & RXH_L4_B_0_1) == !!(rxfh & RXH_L4_B_2_3); + + return sym; +} + int ethtool_check_ops(const struct ethtool_ops *ops) { if (WARN_ON(ops->set_coalesce && !ops->supported_coalesce_params)) |