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net: always dump full packets with skb_dump

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Currently skb_dump has a restriction to only dump full packet for the
first 5 socket buffers, then only headers will be printed. Remove this
arbitrary and confusing restriction, which is only documented vaguely
("up to") in the comments above the prototype.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Oltean 2020-10-05 17:48:38 +03:00 committed by David S. Miller
parent 717f203416
commit 302af7c604
1 changed files with 1 additions and 5 deletions
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6
net/core/skbuff.c
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@ -712,11 +712,10 @@ EXPORT_SYMBOL(kfree_skb_list);
*
* Must only be called from net_ratelimit()-ed paths.
*
* Dumps up to can_dump_full whole packets if full_pkt, headers otherwise.
* Dumps whole packets if full_pkt, only headers otherwise.
*/
void skb_dump(const char *level, const struct sk_buff *skb, bool full_pkt)
{
static atomic_t can_dump_full = ATOMIC_INIT(5);
struct skb_shared_info *sh = skb_shinfo(skb);
struct net_device *dev = skb->dev;
struct sock *sk = skb->sk;
@ -725,9 +724,6 @@ void skb_dump(const char *level, const struct sk_buff *skb, bool full_pkt)
int headroom, tailroom;
int i, len, seg_len;
if (full_pkt)
full_pkt = atomic_dec_if_positive(&can_dump_full) >= 0;
if (full_pkt)
len = skb->len;
else