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net: drop unused skb_append_datato_frags() 

This helper is unused since commit 988cf74deb ("inet:
Stop generating UFO packets.")

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paolo Abeni 2018-10-02 11:03:40 +02:00 committed by David S. Miller
parent 407257ce24
commit cc16567e5a
2 changed files with 0 additions and 63 deletions
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5
include/linux/skbuff.h
View File

@ -1082,11 +1082,6 @@ static inline int skb_pad(struct sk_buff *skb, int pad)
}
#define dev_kfree_skb(a) consume_skb(a)
int skb_append_datato_frags(struct sock *sk, struct sk_buff *skb,
int getfrag(void *from, char *to, int offset,
int len, int odd, struct sk_buff *skb),
void *from, int length);
int skb_append_pagefrags(struct sk_buff *skb, struct page *page,
int offset, size_t size);

58
net/core/skbuff.c
View File

@ -3381,64 +3381,6 @@ unsigned int skb_find_text(struct sk_buff *skb, unsigned int from,
}
EXPORT_SYMBOL(skb_find_text);
/**
* skb_append_datato_frags - append the user data to a skb
* @sk: sock structure
* @skb: skb structure to be appended with user data.
* @getfrag: call back function to be used for getting the user data
* @from: pointer to user message iov
* @length: length of the iov message
*
* Description: This procedure append the user data in the fragment part
* of the skb if any page alloc fails user this procedure returns -ENOMEM
*/
int skb_append_datato_frags(struct sock *sk, struct sk_buff *skb,
int (*getfrag)(void *from, char *to, int offset,
int len, int odd, struct sk_buff *skb),
void *from, int length)
{
int frg_cnt = skb_shinfo(skb)->nr_frags;
int copy;
int offset = 0;
int ret;
struct page_frag *pfrag = &current->task_frag;
do {
/* Return error if we don't have space for new frag */
if (frg_cnt >= MAX_SKB_FRAGS)
return -EMSGSIZE;
if (!sk_page_frag_refill(sk, pfrag))
return -ENOMEM;
/* copy the user data to page */
copy = min_t(int, length, pfrag->size - pfrag->offset);
ret = getfrag(from, page_address(pfrag->page) + pfrag->offset,
offset, copy, 0, skb);
if (ret < 0)
return -EFAULT;
/* copy was successful so update the size parameters */
skb_fill_page_desc(skb, frg_cnt, pfrag->page, pfrag->offset,
copy);
frg_cnt++;
pfrag->offset += copy;
get_page(pfrag->page);
skb->truesize += copy;
refcount_add(copy, &sk->sk_wmem_alloc);
skb->len += copy;
skb->data_len += copy;
offset += copy;
length -= copy;
} while (length > 0);
return 0;
}
EXPORT_SYMBOL(skb_append_datato_frags);
int skb_append_pagefrags(struct sk_buff *skb, struct page *page,
int offset, size_t size)
{