myri10ge: fix truesize underestimation

skb->truesize must account for allocated memory, not the used part of
it. Doing this work is important to avoid unexpected OOM situations.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Jon Mason <mason@myri.com>
Acked-by: Jon Mason <mason@myri.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
index c970a48436dc..0778edcf7b9a 100644
--- a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
+++ b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
@@ -1210,7 +1210,6 @@ myri10ge_rx_skb_build(struct sk_buff *skb, u8 * va,
         struct skb_frag_struct *skb_frags;
 
         skb->len = skb->data_len = len;
-        skb->truesize = len + sizeof(struct sk_buff);
         /* attach the page(s) */
 
         skb_frags = skb_shinfo(skb)->frags;
@@ -1385,6 +1384,8 @@ myri10ge_rx_done(struct myri10ge_slice_state *ss, int len, __wsum csum,
         if (skb_frag_size(&skb_shinfo(skb)->frags[0]) <= 0) {
                 skb_frag_unref(skb, 0);
                 skb_shinfo(skb)->nr_frags = 0;
+        } else {
+                skb->truesize += bytes * skb_shinfo(skb)->nr_frags;
         }
         skb->protocol = eth_type_trans(skb, dev);
         skb_record_rx_queue(skb, ss - &mgp->ss[0]);