Introduce a new netdev feature, NETIF_F_GRO_UDP_FWD, to allow user
to turn UDP GRO on and off for forwarding.
Defaults to off to not change current datapath.
Suggested-by: Paolo Abeni <pab...@redhat.com>
Signed-off-by: Alexander Lobakin <aloba...@pm.me>
---
include/linux/netdev_features.h | 4 +++-
net/ethtool/common.c | 1 +
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index 934de56644e7..c06d6aaba9df 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -84,6 +84,7 @@ enum {
NETIF_F_GRO_FRAGLIST_BIT, /* Fraglist GRO */
NETIF_F_HW_MACSEC_BIT, /* Offload MACsec operations */
+ NETIF_F_GRO_UDP_FWD_BIT, /* Allow UDP GRO for forwarding */
/*
* Add your fresh new feature above and remember to update
@@ -157,6 +158,7 @@ enum {
#define NETIF_F_GRO_FRAGLIST __NETIF_F(GRO_FRAGLIST)
#define NETIF_F_GSO_FRAGLIST __NETIF_F(GSO_FRAGLIST)
#define NETIF_F_HW_MACSEC __NETIF_F(HW_MACSEC)
+#define NETIF_F_GRO_UDP_FWD __NETIF_F(GRO_UDP_FWD)
/* Finds the next feature with the highest number of the range of start till 0.
*/
@@ -234,7 +236,7 @@ static inline int find_next_netdev_feature(u64 feature,
unsigned long start)
#define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO)
/* Changeable features with no special hardware requirements that defaults to
off. */
-#define NETIF_F_SOFT_FEATURES_OFF NETIF_F_GRO_FRAGLIST
+#define NETIF_F_SOFT_FEATURES_OFF (NETIF_F_GRO_FRAGLIST |
NETIF_F_GRO_UDP_FWD)
#define NETIF_F_VLAN_FEATURES (NETIF_F_HW_VLAN_CTAG_FILTER | \
NETIF_F_HW_VLAN_CTAG_RX | \
diff --git a/net/ethtool/common.c b/net/ethtool/common.c
index 24036e3055a1..181220101a6e 100644
--- a/net/ethtool/common.c
+++ b/net/ethtool/common.c
@@ -68,6 +68,7 @@ const char
netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
[NETIF_F_HW_TLS_RX_BIT] = "tls-hw-rx-offload",
[NETIF_F_GRO_FRAGLIST_BIT] = "rx-gro-list",
[NETIF_F_HW_MACSEC_BIT] = "macsec-hw-offload",
+ [NETIF_F_GRO_UDP_FWD_BIT] = "rx-udp-gro-forwarding",
};
const char
--
2.30.0
