From 59ae1d127ac0ae404baf414c434ba2651b793f46 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 16 Jun 2017 14:29:20 +0200 Subject: 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 Signed-off-by: Johannes Berg Signed-off-by: David S. Miller --- drivers/atm/idt77252.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) (limited to 'drivers/atm/idt77252.c') diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c index 5ec109533bb9..4e64de380bda 100644 --- a/drivers/atm/idt77252.c +++ b/drivers/atm/idt77252.c @@ -1090,8 +1090,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) *((u32 *) sb->data) = aal0; skb_put(sb, sizeof(u32)); - memcpy(skb_put(sb, ATM_CELL_PAYLOAD), - cell, ATM_CELL_PAYLOAD); + skb_put_data(sb, cell, ATM_CELL_PAYLOAD); ATM_SKB(sb)->vcc = vcc; __net_timestamp(sb); @@ -1159,8 +1158,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) return; } skb_queue_walk(&rpp->queue, sb) - memcpy(skb_put(skb, sb->len), - sb->data, sb->len); + skb_put_data(skb, sb->data, sb->len); recycle_rx_pool_skb(card, rpp); @@ -1322,8 +1320,7 @@ idt77252_rx_raw(struct idt77252_dev *card) *((u32 *) sb->data) = header; skb_put(sb, sizeof(u32)); - memcpy(skb_put(sb, ATM_CELL_PAYLOAD), &(queue->data[16]), - ATM_CELL_PAYLOAD); + skb_put_data(sb, &(queue->data[16]), ATM_CELL_PAYLOAD); ATM_SKB(sb)->vcc = vcc; __net_timestamp(sb); @@ -2014,7 +2011,7 @@ idt77252_send_oam(struct atm_vcc *vcc, void *cell, int flags) } atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); - memcpy(skb_put(skb, 52), cell, 52); + skb_put_data(skb, cell, 52); return idt77252_send_skb(vcc, skb, 1); } -- cgit v1.2.3