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authorJohannes Berg <johannes.berg@intel.com>2017-06-16 15:29:20 +0300
committerDavid S. Miller <davem@davemloft.net>2017-06-16 18:48:37 +0300
commit59ae1d127ac0ae404baf414c434ba2651b793f46 (patch)
tree043e71496aa7a7db86bcc8219a3a51f533aac982 /net/batman-adv
parentb080db585384b9f037e015c0c28d1ad33be41dfc (diff)
downloadlinux-59ae1d127ac0ae404baf414c434ba2651b793f46.tar.xz
networking: introduce and use skb_put_data()
A common pattern with skb_put() is to just want to memcpy() some data into the new space, introduce skb_put_data() for this. An spatch similar to the one for skb_put_zero() converts many of the places using it: @@ identifier p, p2; expression len, skb, data; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_data(skb, data, len); | -p = (t)skb_put(skb, len); +p = skb_put_data(skb, data, len); ) ( p2 = (t2)p; -memcpy(p2, data, len); | -memcpy(p, data, len); ) @@ type t, t2; identifier p, p2; expression skb, data; @@ t *p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); | -p = (t *)skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); ) ( p2 = (t2)p; -memcpy(p2, data, sizeof(*p)); | -memcpy(p, data, sizeof(*p)); ) @@ expression skb, len, data; @@ -memcpy(skb_put(skb, len), data, len); +skb_put_data(skb, data, len); (again, manually post-processed to retain some comments) Reviewed-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/batman-adv')
-rw-r--r--net/batman-adv/bat_iv_ogm.c4
-rw-r--r--net/batman-adv/bat_v_ogm.c6
-rw-r--r--net/batman-adv/fragmentation.c3
3 files changed, 5 insertions, 8 deletions
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index fa8d6b475c06..a3501173e200 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -732,8 +732,8 @@ static void batadv_iv_ogm_aggregate(struct batadv_forw_packet *forw_packet_aggr,
unsigned char *skb_buff;
unsigned long new_direct_link_flag;
- skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
- memcpy(skb_buff, packet_buff, packet_len);
+ skb_buff = skb_put_data(forw_packet_aggr->skb, packet_buff,
+ packet_len);
forw_packet_aggr->packet_len += packet_len;
forw_packet_aggr->num_packets++;
diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c
index 03a35c9f456d..1e3dc374bfde 100644
--- a/net/batman-adv/bat_v_ogm.c
+++ b/net/batman-adv/bat_v_ogm.c
@@ -166,8 +166,7 @@ static void batadv_v_ogm_send(struct work_struct *work)
goto reschedule;
skb_reserve(skb, ETH_HLEN);
- pkt_buff = skb_put(skb, ogm_buff_len);
- memcpy(pkt_buff, ogm_buff, ogm_buff_len);
+ pkt_buff = skb_put_data(skb, ogm_buff, ogm_buff_len);
ogm_packet = (struct batadv_ogm2_packet *)skb->data;
ogm_packet->seqno = htonl(atomic_read(&bat_priv->bat_v.ogm_seqno));
@@ -382,8 +381,7 @@ static void batadv_v_ogm_forward(struct batadv_priv *bat_priv,
goto out;
skb_reserve(skb, ETH_HLEN);
- skb_buff = skb_put(skb, packet_len);
- memcpy(skb_buff, ogm_received, packet_len);
+ skb_buff = skb_put_data(skb, ogm_received, packet_len);
/* apply forward penalty */
ogm_forward = (struct batadv_ogm2_packet *)skb_buff;
diff --git a/net/batman-adv/fragmentation.c b/net/batman-adv/fragmentation.c
index 8f964beaac28..a98cf1104a30 100644
--- a/net/batman-adv/fragmentation.c
+++ b/net/batman-adv/fragmentation.c
@@ -296,8 +296,7 @@ batadv_frag_merge_packets(struct hlist_head *chain)
/* Copy the payload of the each fragment into the last skb */
hlist_for_each_entry(entry, chain, list) {
size = entry->skb->len - hdr_size;
- memcpy(skb_put(skb_out, size), entry->skb->data + hdr_size,
- size);
+ skb_put_data(skb_out, entry->skb->data + hdr_size, size);
}
free: