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Commit ba5d3c66 authored by Dimitris Michailidis's avatar Dimitris Michailidis Committed by David S. Miller
Browse files

cxgb4: don't offload Rx checksums for IPv6 fragments 



The checksum provided by the device doesn't include the L3 headers,
as IPv6 expects.

Signed-off-by: default avatarDimitris Michailidis <dm@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 63bcceec

drivers/net/cxgb4/sge.c

+4 −3
Original line number Diff line number Diff line
@@ -1593,14 +1593,15 @@ int t4_ethrx_handler(struct sge_rspq *q, const __be64 *rsp, 


	if (csum_ok && (pi->rx_offload & RX_CSO) &&

	    (pkt->l2info & htonl(RXF_UDP | RXF_TCP))) {

		if (!pkt->ip_frag)

		if (!pkt->ip_frag) {

			skb->ip_summed = CHECKSUM_UNNECESSARY;

		else {

			rxq->stats.rx_cso++;

		} else if (pkt->l2info & htonl(RXF_IP)) {

			__sum16 c = (__force __sum16)pkt->csum;

			skb->csum = csum_unfold(c);

			skb->ip_summed = CHECKSUM_COMPLETE;

		}

			rxq->stats.rx_cso++;

		}

	} else

		skb->ip_summed = CHECKSUM_NONE;

drivers/net/cxgb4/t4_msg.h

+2 −0
Original line number Diff line number Diff line
@@ -529,6 +529,8 @@ struct cpl_rx_pkt { 
	__be32 l2info;

#define RXF_UDP (1 << 22)

#define RXF_TCP (1 << 23)

#define RXF_IP  (1 << 24)

#define RXF_IP6 (1 << 25)

	__be16 hdr_len;

	__be16 err_vec;

};