[PATCH] sfc: Use 'skb_add_rx_frag()' instead of hand coding it

[Christophe JAILLET]

Some lines of code can be merged into an equivalent 'skb_add_rx_frag()'
call which is less verbose.

Signed-off-by: Christophe JAILLET <christophe.jail...@wanadoo.fr>
---
UNTESTED. Compile tested only

The 'skb->truesize' computation is likely to be slightly slower (n
additions hidden in 'skb_add_rx_frag' instead of 1 multiplication), but I
don't think that it is an issue here.
---
 drivers/net/ethernet/sfc/rx.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/sfc/rx.c b/drivers/net/ethernet/sfc/rx.c
index 89c5c75f479f..17b8119c48e5 100644
--- a/drivers/net/ethernet/sfc/rx.c
+++ b/drivers/net/ethernet/sfc/rx.c
@@ -94,12 +94,11 @@ static struct sk_buff *efx_rx_mk_skb(struct efx_channel 
*channel,
                rx_buf->len -= hdr_len;
 
                for (;;) {
-                       skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
-                                          rx_buf->page, rx_buf->page_offset,
-                                          rx_buf->len);
+                       skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
+                                       rx_buf->page, rx_buf->page_offset,
+                                       rx_buf->len, efx->rx_buffer_truesize);
                        rx_buf->page = NULL;
-                       skb->len += rx_buf->len;
-                       skb->data_len += rx_buf->len;
+
                        if (skb_shinfo(skb)->nr_frags == n_frags)
                                break;
 
@@ -111,8 +110,6 @@ static struct sk_buff *efx_rx_mk_skb(struct efx_channel 
*channel,
                n_frags = 0;
        }
 
-       skb->truesize += n_frags * efx->rx_buffer_truesize;
-
        /* Move past the ethernet header */
        skb->protocol = eth_type_trans(skb, efx->net_dev);
 
-- 
2.27.0