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| author | Ben Hutchings <bhutchings@solarflare.com> | 2008-06-19 16:22:28 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-06-19 16:22:28 -0700 |
| commit | 4497b0763cb1afae463f5e144c28b5d806e28b60 (patch) | |
| tree | 3e86c53b5eb461eac7523885e43f36033cc03968 /net/core/skbuff.c | |
| parent | 0187bdfb05674147774ca79a79942537f3ad54bd (diff) | |
| download | lwn-4497b0763cb1afae463f5e144c28b5d806e28b60.tar.gz lwn-4497b0763cb1afae463f5e144c28b5d806e28b60.zip | |
net: Discard and warn about LRO'd skbs received for forwarding
Add skb_warn_if_lro() to test whether an skb was received with LRO and
warn if so.
Change br_forward(), ip_forward() and ip6_forward() to call it) and
discard the skb if it returns true.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/skbuff.c')
| -rw-r--r-- | net/core/skbuff.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 3e18f8525e82..2df012be973d 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -2583,6 +2583,13 @@ bool skb_partial_csum_set(struct sk_buff *skb, u16 start, u16 off) return true; } +void __skb_warn_lro_forwarding(const struct sk_buff *skb) +{ + if (net_ratelimit()) + pr_warning("%s: received packets cannot be forwarded" + " while LRO is enabled\n", skb->dev->name); +} + EXPORT_SYMBOL(___pskb_trim); EXPORT_SYMBOL(__kfree_skb); EXPORT_SYMBOL(kfree_skb); @@ -2616,6 +2623,7 @@ EXPORT_SYMBOL(skb_seq_read); EXPORT_SYMBOL(skb_abort_seq_read); EXPORT_SYMBOL(skb_find_text); EXPORT_SYMBOL(skb_append_datato_frags); +EXPORT_SYMBOL(__skb_warn_lro_forwarding); EXPORT_SYMBOL_GPL(skb_to_sgvec); EXPORT_SYMBOL_GPL(skb_cow_data); |