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authorArnaldo Carvalho de Melo <acme@ghostprotocols.net>2007-03-31 11:55:19 -0300
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:28:29 -0700
commit27d7ff46a3498d3debc6ba68fb8014c702b81170 (patch)
treeb5a0c617cf8339524d3b1f1633e08eae7b94cf86 /net/atm
parent3dbad80ac7632f243b824d469301abb97ec634a1 (diff)
downloadlinux-27d7ff46a3498d3debc6ba68fb8014c702b81170.tar.gz
[SK_BUFF]: Introduce skb_copy_to_linear_data{_offset}
To clearly state the intent of copying to 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@ghostprotocols.net>
Diffstat (limited to 'net/atm')
-rw-r--r--net/atm/br2684.c2
-rw-r--r--net/atm/lec.c8
-rw-r--r--net/atm/mpc.c11
3 files changed, 12 insertions, 9 deletions
diff --git a/net/atm/br2684.c b/net/atm/br2684.c
index a1686dfcbb9..0e9f00c5c89 100644
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -173,7 +173,7 @@ static int br2684_xmit_vcc(struct sk_buff *skb, struct br2684_dev *brdev,
}
skb_push(skb, minheadroom);
if (brvcc->encaps == e_llc)
- memcpy(skb->data, llc_oui_pid_pad, 10);
+ skb_copy_to_linear_data(skb, llc_oui_pid_pad, 10);
else
memset(skb->data, 0, 2);
#endif /* FASTER_VERSION */
diff --git a/net/atm/lec.c b/net/atm/lec.c
index 4b3e72f31b3..6d63afa5764 100644
--- a/net/atm/lec.c
+++ b/net/atm/lec.c
@@ -576,8 +576,8 @@ static int lec_atm_send(struct atm_vcc *vcc, struct sk_buff *skb)
break;
}
skb2->len = sizeof(struct atmlec_msg);
- memcpy(skb2->data, mesg,
- sizeof(struct atmlec_msg));
+ skb_copy_to_linear_data(skb2, mesg,
+ sizeof(*mesg));
atm_force_charge(priv->lecd, skb2->truesize);
sk = sk_atm(priv->lecd);
skb_queue_tail(&sk->sk_receive_queue, skb2);
@@ -1337,7 +1337,7 @@ static int lane2_resolve(struct net_device *dev, u8 *dst_mac, int force,
if (skb == NULL)
return -1;
skb->len = *sizeoftlvs;
- memcpy(skb->data, *tlvs, *sizeoftlvs);
+ skb_copy_to_linear_data(skb, *tlvs, *sizeoftlvs);
retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, skb);
}
return retval;
@@ -1371,7 +1371,7 @@ static int lane2_associate_req(struct net_device *dev, u8 *lan_dst,
if (skb == NULL)
return 0;
skb->len = sizeoftlvs;
- memcpy(skb->data, tlvs, sizeoftlvs);
+ skb_copy_to_linear_data(skb, tlvs, sizeoftlvs);
retval = send_to_lecd(priv, l_associate_req, NULL, NULL, skb);
if (retval != 0)
printk("lec.c: lane2_associate_req() failed\n");
diff --git a/net/atm/mpc.c b/net/atm/mpc.c
index 4d2592c1409..813e08d6dc7 100644
--- a/net/atm/mpc.c
+++ b/net/atm/mpc.c
@@ -504,11 +504,13 @@ static int send_via_shortcut(struct sk_buff *skb, struct mpoa_client *mpc)
tagged_llc_snap_hdr.tag = entry->ctrl_info.tag;
skb_pull(skb, ETH_HLEN); /* get rid of Eth header */
skb_push(skb, sizeof(tagged_llc_snap_hdr)); /* add LLC/SNAP header */
- memcpy(skb->data, &tagged_llc_snap_hdr, sizeof(tagged_llc_snap_hdr));
+ skb_copy_to_linear_data(skb, &tagged_llc_snap_hdr,
+ sizeof(tagged_llc_snap_hdr));
} else {
skb_pull(skb, ETH_HLEN); /* get rid of Eth header */
skb_push(skb, sizeof(struct llc_snap_hdr)); /* add LLC/SNAP header + tag */
- memcpy(skb->data, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr));
+ skb_copy_to_linear_data(skb, &llc_snap_mpoa_data,
+ sizeof(struct llc_snap_hdr));
}
atomic_add(skb->truesize, &sk_atm(entry->shortcut)->sk_wmem_alloc);
@@ -711,7 +713,8 @@ static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb)
return;
}
skb_push(new_skb, eg->ctrl_info.DH_length); /* add MAC header */
- memcpy(new_skb->data, eg->ctrl_info.DLL_header, eg->ctrl_info.DH_length);
+ skb_copy_to_linear_data(new_skb, eg->ctrl_info.DLL_header,
+ eg->ctrl_info.DH_length);
new_skb->protocol = eth_type_trans(new_skb, dev);
skb_reset_network_header(new_skb);
@@ -936,7 +939,7 @@ int msg_to_mpoad(struct k_message *mesg, struct mpoa_client *mpc)
if (skb == NULL)
return -ENOMEM;
skb_put(skb, sizeof(struct k_message));
- memcpy(skb->data, mesg, sizeof(struct k_message));
+ skb_copy_to_linear_data(skb, mesg, sizeof(*mesg));
atm_force_charge(mpc->mpoad_vcc, skb->truesize);
sk = sk_atm(mpc->mpoad_vcc);