[PATCH net-next v8 09/13] net: introduce the skb_copy_to_va_nocache() helper
From: Yunsheng Lin <hidden>
Date: 2024-06-17 13:17:44
Also in:
lkml
Subsystem:
networking [general], networking [sockets], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Kuniyuki Iwashima, Willem de Bruijn, Linus Torvalds
introduce the skb_copy_to_va_nocache() helper to avoid calling virt_to_page() and skb_copy_to_page_nocache(). CC: Alexander Duyck <redacted> Signed-off-by: Yunsheng Lin <redacted> --- include/net/sock.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/include/net/sock.h b/include/net/sock.h
index b30ea0c342a6..1c2269446149 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h@@ -2196,6 +2196,21 @@ static inline int skb_copy_to_page_nocache(struct sock *sk, struct iov_iter *fro return 0; } +static inline int skb_copy_to_va_nocache(struct sock *sk, struct iov_iter *from, + struct sk_buff *skb, char *va, int copy) +{ + int err; + + err = skb_do_copy_data_nocache(sk, skb, from, va, copy, skb->len); + if (err) + return err; + + skb_len_add(skb, copy); + sk_wmem_queued_add(sk, copy); + sk_mem_charge(sk, copy); + return 0; +} + /** * sk_wmem_alloc_get - returns write allocations * @sk: socket
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2.33.0