xfrm: remove skb_icv_walk

The last users of skb_icv_walk are converted to ahash now,
so skb_icv_walk is unused and can be removed.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 78 deletions

diff --git a/net/xfrm/xfrm_algo.c b/net/xfrm/xfrm_algo.c
index faf54c6bf96b..b39341072aa6 100644
--- a/net/xfrm/xfrm_algo.c
+++ b/net/xfrm/xfrm_algo.c
@@ -689,84 +689,6 @@ int xfrm_count_enc_supported(void)
 }
 EXPORT_SYMBOL_GPL(xfrm_count_enc_supported);
 
-/* Move to common area: it is shared with AH. */
-
-int skb_icv_walk(const struct sk_buff *skb, struct hash_desc *desc,
-                 int offset, int len, icv_update_fn_t icv_update)
-{
-        int start = skb_headlen(skb);
-        int i, copy = start - offset;
-        struct sk_buff *frag_iter;
-        struct scatterlist sg;
-        int err;
-
-        /* Checksum header. */
-        if (copy > 0) {
-                if (copy > len)
-                        copy = len;
-
-                sg_init_one(&sg, skb->data + offset, copy);
-
-                err = icv_update(desc, &sg, copy);
-                if (unlikely(err))
-                        return err;
-
-                if ((len -= copy) == 0)
-                        return 0;
-                offset += copy;
-        }
-
-        for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
-                int end;
-
-                WARN_ON(start > offset + len);
-
-                end = start + skb_shinfo(skb)->frags[i].size;
-                if ((copy = end - offset) > 0) {
-                        skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-
-                        if (copy > len)
-                                copy = len;
-
-                        sg_init_table(&sg, 1);
-                        sg_set_page(&sg, frag->page, copy,
-                                    frag->page_offset + offset-start);
-
-                        err = icv_update(desc, &sg, copy);
-                        if (unlikely(err))
-                                return err;
-
-                        if (!(len -= copy))
-                                return 0;
-                        offset += copy;
-                }
-                start = end;
-        }
-
-        skb_walk_frags(skb, frag_iter) {
-                int end;
-
-                WARN_ON(start > offset + len);
-
-                end = start + frag_iter->len;
-                if ((copy = end - offset) > 0) {
-                        if (copy > len)
-                                copy = len;
-                        err = skb_icv_walk(frag_iter, desc, offset-start,
-                                           copy, icv_update);
-                        if (unlikely(err))
-                                return err;
-                        if ((len -= copy) == 0)
-                                return 0;
-                        offset += copy;
-                }
-                start = end;
-        }
-        BUG_ON(len);
-        return 0;
-}
-EXPORT_SYMBOL_GPL(skb_icv_walk);
-
 #if defined(CONFIG_INET_ESP) || defined(CONFIG_INET_ESP_MODULE) || defined(CONFIG_INET6_ESP) || defined(CONFIG_INET6_ESP_MODULE)
 
 void *pskb_put(struct sk_buff *skb, struct sk_buff *tail, int len)