[PATCH net-next 1/2] net: introduce UDP GRO netdev feature
From: Alexander Lobakin <hidden>
Date: 2021-01-18 19:42:59
Also in:
lkml
Subsystem:
networking drivers, networking [ethtool], networking [general], the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Andrew Lunn, Linus Torvalds
Introduce a new netdev_feature, NETIF_F_GRO_UDP, to allow user to turn UDP GRO on and off when there is no socket, e.g. when forwarding. Defaults to off to not change current datapath. Suggested-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Alexander Lobakin <redacted> --- 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..c6526aa13684 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_BIT, /* Enable UDP GRO */ /* * 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 __NETIF_F(GRO_UDP) /* 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) #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..e45128882372 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_BIT] = "rx-gro-udp", }; const char
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2.30.0