diff options
| author | Daniel Borkmann <daniel@iogearbox.net> | 2024-09-23 23:22:41 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-10-10 12:00:07 +0200 |
| commit | eb9a7d90f2fdd011db2c6db5252158f28e3c19a8 (patch) | |
| tree | 18d5becf4628d3341e77f751f76627c69b00ce4f /include/linux | |
| parent | ab5d3420a1120950703dbdc33698b28a6ebc3d23 (diff) | |
net: Add netif_get_gro_max_size helper for GRO
[ Upstream commit e8d4d34df715133c319fabcf63fdec684be75ff8 ]
Add a small netif_get_gro_max_size() helper which returns the maximum IPv4
or IPv6 GRO size of the netdevice.
We later add a netif_get_gso_max_size() equivalent as well for GSO, so that
these helpers can be used consistently instead of open-coded checks.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20240923212242.15669-1-daniel@iogearbox.net
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Stable-dep-of: e609c959a939 ("net: Fix gso_features_check to check for both dev->gso_{ipv4_,}max_size")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/netdevice.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index d20c6c99eb88..84a445ca4749 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -5000,6 +5000,15 @@ void netif_set_tso_max_segs(struct net_device *dev, unsigned int segs); void netif_inherit_tso_max(struct net_device *to, const struct net_device *from); +static inline unsigned int +netif_get_gro_max_size(const struct net_device *dev, const struct sk_buff *skb) +{ + /* pairs with WRITE_ONCE() in netif_set_gro(_ipv4)_max_size() */ + return skb->protocol == htons(ETH_P_IPV6) ? + READ_ONCE(dev->gro_max_size) : + READ_ONCE(dev->gro_ipv4_max_size); +} + static inline bool netif_is_macsec(const struct net_device *dev) { return dev->priv_flags & IFF_MACSEC; |