From 28098defc79fe7d29e6bfe4eb6312991f6bdc3d3 Mon Sep 17 00:00:00 2001 From: Hangbin Liu Date: Fri, 17 Oct 2025 03:41:52 +0000 Subject: net: add a common function to compute features for upper devices Some high level software drivers need to compute features from lower devices. But each has their own implementations and may lost some feature compute. Let's use one common function to compute features for kinds of these devices. The new helper uses the current bond implementation as the reference one, as the latter already handles all the relevant aspects: netdev features, TSO limits and dst retention. Suggested-by: Paolo Abeni Signed-off-by: Hangbin Liu Reviewed-by: Sabrina Dubroca Reviewed-by: Jiri Pirko Link: https://patch.msgid.link/20251017034155.61990-2-liuhangbin@gmail.com Signed-off-by: Jakub Kicinski --- include/linux/netdev_features.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'include/linux/netdev_features.h') diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h index 7a01c518e573..93e4da7046a1 100644 --- a/include/linux/netdev_features.h +++ b/include/linux/netdev_features.h @@ -255,6 +255,24 @@ static inline int find_next_netdev_feature(u64 feature, unsigned long start) NETIF_F_GSO_UDP_TUNNEL | \ NETIF_F_GSO_UDP_TUNNEL_CSUM) +/* virtual device features */ +#define MASTER_UPPER_DEV_VLAN_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ + NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | \ + NETIF_F_GSO_ENCAP_ALL | \ + NETIF_F_HIGHDMA | NETIF_F_LRO) + +#define MASTER_UPPER_DEV_ENC_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ + NETIF_F_RXCSUM | NETIF_F_GSO_SOFTWARE | \ + NETIF_F_GSO_PARTIAL) + +#define MASTER_UPPER_DEV_MPLS_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ + NETIF_F_GSO_SOFTWARE) + +#define MASTER_UPPER_DEV_XFRM_FEATURES (NETIF_F_HW_ESP | NETIF_F_HW_ESP_TX_CSUM | \ + NETIF_F_GSO_ESP) + +#define MASTER_UPPER_DEV_GSO_PARTIAL_FEATURES (NETIF_F_GSO_ESP) + static inline netdev_features_t netdev_base_features(netdev_features_t features) { features &= ~NETIF_F_ONE_FOR_ALL; -- cgit v1.2.3