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| author | Hariprasad Shenai <hariprasad@chelsio.com> | 2015-05-05 14:59:56 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-05-05 19:31:50 -0400 |
| commit | 637d3e99735102f06c3eee095d2bbebf1863ca24 (patch) | |
| tree | 2539768dd0c876b63a12a8b039a301860cec9da7 /drivers/net/ethernet/chelsio/cxgb4vf | |
| parent | a3bfb6179cd1277b259f86b022f3340f3bb49cac (diff) | |
| download | linux-stable-637d3e99735102f06c3eee095d2bbebf1863ca24.tar.gz linux-stable-637d3e99735102f06c3eee095d2bbebf1863ca24.tar.bz2 linux-stable-637d3e99735102f06c3eee095d2bbebf1863ca24.zip | |
cxgb4: Discard the packet if the length is greater than mtu
pktgen sends raw udp packets and bypasses most of the
linux networking stack. User can specify different packet sizes.
Hence we need to discard the packet if the length is greater than mtu
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4vf')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4vf/sge.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c index cc92c6984737..98cd47c373c5 100644 --- a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c @@ -1160,7 +1160,7 @@ int t4vf_eth_xmit(struct sk_buff *skb, struct net_device *dev) { u32 wr_mid; u64 cntrl, *end; - int qidx, credits; + int qidx, credits, max_pkt_len; unsigned int flits, ndesc; struct adapter *adapter; struct sge_eth_txq *txq; @@ -1183,6 +1183,13 @@ int t4vf_eth_xmit(struct sk_buff *skb, struct net_device *dev) if (unlikely(skb->len < fw_hdr_copy_len)) goto out_free; + /* Discard the packet if the length is greater than mtu */ + max_pkt_len = ETH_HLEN + dev->mtu; + if (skb_vlan_tag_present(skb)) + max_pkt_len += VLAN_HLEN; + if (!skb_shinfo(skb)->gso_size && (unlikely(skb->len > max_pkt_len))) + goto out_free; + /* * Figure out which TX Queue we're going to use. */ |