[SK_BUFF]: Introduce skb_copy_from_linear_data{_offset}

To clearly state the intent of copying from linear sk_buffs, _offset being a
overly long variant but interesting for the sake of saving some bytes.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/net/decnet/dn_nsp_in.c b/net/decnet/dn_nsp_in.c
index d9498a165acf..4074a6e5d0de 100644
--- a/net/decnet/dn_nsp_in.c
+++ b/net/decnet/dn_nsp_in.c
@@ -362,7 +362,8 @@ static void dn_nsp_conn_conf(struct sock *sk, struct sk_buff *skb)
                         u16 dlen = *skb->data;
                         if ((dlen <= 16) && (dlen <= skb->len)) {
                                 scp->conndata_in.opt_optl = dn_htons(dlen);
-                                memcpy(scp->conndata_in.opt_data, skb->data + 1, dlen);
+                                skb_copy_from_linear_data_offset(skb, 1,
+                                              scp->conndata_in.opt_data, dlen);
                         }
                 }
                 dn_nsp_send_link(sk, DN_NOCHANGE, 0);
@@ -406,7 +407,7 @@ static void dn_nsp_disc_init(struct sock *sk, struct sk_buff *skb)
                 u16 dlen = *skb->data;
                 if ((dlen <= 16) && (dlen <= skb->len)) {
                         scp->discdata_in.opt_optl = dn_htons(dlen);
-                        memcpy(scp->discdata_in.opt_data, skb->data + 1, dlen);
+                        skb_copy_from_linear_data_offset(skb, 1, scp->discdata_in.opt_data, dlen);
                 }
         }