From 8928756d53d5b99dcd18073dc7738b8ebdbe7d96 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Thu, 2 May 2024 10:44:42 +0200 Subject: 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 Reviewed-by: Eric Dumazet Signed-off-by: Felix Fietkau Reviewed-by: David Ahern Reviewed-by: Willem de Bruijn Signed-off-by: Paolo Abeni --- net/core/gro.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'net/core/gro.c') diff --git a/net/core/gro.c b/net/core/gro.c index 99a45a5211c9..e2f84947fb74 100644 --- a/net/core/gro.c +++ b/net/core/gro.c @@ -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) { -- cgit v1.2.3