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Commit 2d171886 authored by Divy Le Ray's avatar Divy Le Ray Committed by David S. Miller
Browse files

cxgb3: fix GRO checksum check 



Verify the HW checksum state for frames handed to GRO processing.

Signed-off-by: default avatarDivy Le Ray <divy@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2fc1b5dd

drivers/net/cxgb3/sge.c

+12 −8
Original line number Diff line number Diff line
@@ -2079,6 +2079,7 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs, 
			 struct sge_fl *fl, int len, int complete)

{

	struct rx_sw_desc *sd = &fl->sdesc[fl->cidx];

	struct port_info *pi = netdev_priv(qs->netdev);

	struct sk_buff *skb = NULL;

	struct cpl_rx_pkt *cpl;

	struct skb_frag_struct *rx_frag;
@@ -2116,11 +2117,18 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs, 


	if (!nr_frags) {

		offset = 2 + sizeof(struct cpl_rx_pkt);

		qs->lro_va = sd->pg_chunk.va + 2;

	}

	len -= offset;

		cpl = qs->lro_va = sd->pg_chunk.va + 2;



	prefetch(qs->lro_va);

		if ((pi->rx_offload & T3_RX_CSUM) &&

		     cpl->csum_valid && cpl->csum == htons(0xffff)) {

			skb->ip_summed = CHECKSUM_UNNECESSARY;

			qs->port_stats[SGE_PSTAT_RX_CSUM_GOOD]++;

		} else

			skb->ip_summed = CHECKSUM_NONE;

	} else

		cpl = qs->lro_va;



	len -= offset;



	rx_frag += nr_frags;

	rx_frag->page = sd->pg_chunk.page;
@@ -2136,12 +2144,8 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs, 
		return;



	skb_record_rx_queue(skb, qs - &adap->sge.qs[0]);

	skb->ip_summed = CHECKSUM_UNNECESSARY;

	cpl = qs->lro_va;



	if (unlikely(cpl->vlan_valid)) {

		struct net_device *dev = qs->netdev;

		struct port_info *pi = netdev_priv(dev);

		struct vlan_group *grp = pi->vlan_grp;



		if (likely(grp != NULL)) {