diff options
| author | Daniel Borkmann <daniel@iogearbox.net> | 2024-09-23 23:22:41 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-10-01 10:48:51 +0200 |
| commit | e8d4d34df715133c319fabcf63fdec684be75ff8 (patch) | |
| tree | cffeb3608883c041a82159859b8c6f900127f9b4 /net/core | |
| parent | 6c24a03a61a245fe34d47582898331fa034b6ccd (diff) | |
net: Add netif_get_gro_max_size helper for GRO
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>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/gro.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/net/core/gro.c b/net/core/gro.c index 802b4a062400..d1f44084e978 100644 --- a/net/core/gro.c +++ b/net/core/gro.c @@ -98,7 +98,6 @@ int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb) unsigned int headlen = skb_headlen(skb); unsigned int len = skb_gro_len(skb); unsigned int delta_truesize; - unsigned int gro_max_size; unsigned int new_truesize; struct sk_buff *lp; int segs; @@ -112,12 +111,8 @@ int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb) if (p->pp_recycle != skb->pp_recycle) return -ETOOMANYREFS; - /* pairs with WRITE_ONCE() in netif_set_gro(_ipv4)_max_size() */ - gro_max_size = p->protocol == htons(ETH_P_IPV6) ? - READ_ONCE(p->dev->gro_max_size) : - READ_ONCE(p->dev->gro_ipv4_max_size); - - if (unlikely(p->len + len >= gro_max_size || NAPI_GRO_CB(skb)->flush)) + if (unlikely(p->len + len >= netif_get_gro_max_size(p->dev, p) || + NAPI_GRO_CB(skb)->flush)) return -E2BIG; if (unlikely(p->len + len >= GRO_LEGACY_MAX_SIZE)) { |