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net: move skb_gro_receive_list from udp to core 

This helper function will be used for TCP fraglist GRO support

Acked-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Felix Fietkau 2024-05-02 10:44:42 +02:00 committed by Paolo Abeni
parent b1de3c0df7
commit 8928756d53
3 changed files with 28 additions and 27 deletions
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1
include/net/gro.h
View File

@ -438,6 +438,7 @@ static inline __wsum ip6_gro_compute_pseudo(const struct sk_buff *skb,
}
int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb);
int skb_gro_receive_list(struct sk_buff *p, struct sk_buff *skb);
/* Pass the currently batched GRO_NORMAL SKBs up to the stack. */
static inline void gro_normal_list(struct napi_struct *napi)

27
net/core/gro.c
View File

@ -231,6 +231,33 @@ done:
return 0;
}
int skb_gro_receive_list(struct sk_buff *p, struct sk_buff *skb)
{
if (unlikely(p->len + skb->len >= 65536))
return -E2BIG;
if (NAPI_GRO_CB(p)->last == p)
skb_shinfo(p)->frag_list = skb;
else
NAPI_GRO_CB(p)->last->next = skb;
skb_pull(skb, skb_gro_offset(skb));
NAPI_GRO_CB(p)->last = skb;
NAPI_GRO_CB(p)->count++;
p->data_len += skb->len;
/* sk ownership - if any - completely transferred to the aggregated packet */
skb->destructor = NULL;
skb->sk = NULL;
p->truesize += skb->truesize;
p->len += skb->len;
NAPI_GRO_CB(skb)->same_flow = 1;
return 0;
}
static void napi_gro_complete(struct napi_struct *napi, struct sk_buff *skb)
{

27
net/ipv4/udp_offload.c
View File

@ -433,33 +433,6 @@ out:
return segs;
}
static int skb_gro_receive_list(struct sk_buff *p, struct sk_buff *skb)
{
if (unlikely(p->len + skb->len >= 65536))
return -E2BIG;
if (NAPI_GRO_CB(p)->last == p)
skb_shinfo(p)->frag_list = skb;
else
NAPI_GRO_CB(p)->last->next = skb;
skb_pull(skb, skb_gro_offset(skb));
NAPI_GRO_CB(p)->last = skb;
NAPI_GRO_CB(p)->count++;
p->data_len += skb->len;
/* sk ownership - if any - completely transferred to the aggregated packet */
skb->destructor = NULL;
skb->sk = NULL;
p->truesize += skb->truesize;
p->len += skb->len;
NAPI_GRO_CB(skb)->same_flow = 1;
return 0;
}
#define UDP_GRO_CNT_MAX 64
static struct sk_buff *udp_gro_receive_segment(struct list_head *head,