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ehea: Fix a checksum issue on the receive path

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Currently we set all skbs with CHECKSUM_UNNECESSARY, even
those whose protocol we don't know. This patch just
add the CHECKSUM_COMPLETE tag for non TCP/UDP packets.

Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Breno Leitao 2010-10-07 13:17:33 +00:00 committed by David S. Miller
parent 6fcc040f02
commit 71085ce828
2 changed files with 9 additions and 1 deletions
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9
drivers/net/ehea/ehea_main.c
View File

@ -533,8 +533,15 @@ static inline void ehea_fill_skb(struct net_device *dev,
int length = cqe->num_bytes_transfered - 4; /*remove CRC */
skb_put(skb, length);
skb->ip_summed = CHECKSUM_UNNECESSARY;
skb->protocol = eth_type_trans(skb, dev);
/* The packet was not an IPV4 packet so a complemented checksum was
calculated. The value is found in the Internet Checksum field. */
if (cqe->status & EHEA_CQE_BLIND_CKSUM) {
skb->ip_summed = CHECKSUM_COMPLETE;
skb->csum = csum_unfold(~cqe->inet_checksum_value);
} else
skb->ip_summed = CHECKSUM_UNNECESSARY;
}
static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,

1
drivers/net/ehea/ehea_qmr.h
View File

@ -150,6 +150,7 @@ struct ehea_rwqe {
#define EHEA_CQE_TYPE_RQ 0x60
#define EHEA_CQE_STAT_ERR_MASK 0x700F
#define EHEA_CQE_STAT_FAT_ERR_MASK 0xF
#define EHEA_CQE_BLIND_CKSUM 0x8000
#define EHEA_CQE_STAT_ERR_TCP 0x4000
#define EHEA_CQE_STAT_ERR_IP 0x2000
#define EHEA_CQE_STAT_ERR_CRC 0x1000