From ba5d3c66e02c3dac66a386b6af0dc9687a4dba67 Mon Sep 17 00:00:00 2001 From: Dimitris Michailidis Date: Mon, 2 Aug 2010 13:19:17 +0000 Subject: [PATCH] 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: Dimitris Michailidis Signed-off-by: David S. Miller --- drivers/net/cxgb4/sge.c | 7 ++++--- drivers/net/cxgb4/t4_msg.h | 2 ++ 2 files changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/cxgb4/sge.c b/drivers/net/cxgb4/sge.c index 4388f72d586a..304302a71dbc 100644 --- a/drivers/net/cxgb4/sge.c +++ b/drivers/net/cxgb4/sge.c @@ -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++; } - rxq->stats.rx_cso++; } else skb->ip_summed = CHECKSUM_NONE; diff --git a/drivers/net/cxgb4/t4_msg.h b/drivers/net/cxgb4/t4_msg.h index 623932b39b5d..a550d0c706f3 100644 --- a/drivers/net/cxgb4/t4_msg.h +++ b/drivers/net/cxgb4/t4_msg.h @@ -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; }; -- 2.34.1