diff options
| author | Breno Leitao <leitao@linux.vnet.ibm.com> | 2010-10-07 13:17:33 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-10-13 14:24:59 -0700 |
| commit | 71085ce8285dc5f3011694f6ba7259201135c6d6 (patch) | |
| tree | 1f9bb13115733a117998abe4b0abdb6fb2ca332e | |
| parent | 6fcc040f02d281c7e9563127358a77ce2bbfe284 (diff) | |
| download | lwn-71085ce8285dc5f3011694f6ba7259201135c6d6.tar.gz lwn-71085ce8285dc5f3011694f6ba7259201135c6d6.zip | |
ehea: Fix a checksum issue on the receive path
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>
| -rw-r--r-- | drivers/net/ehea/ehea_main.c | 9 | ||||
| -rw-r--r-- | drivers/net/ehea/ehea_qmr.h | 1 |
2 files changed, 9 insertions, 1 deletions
diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c index a333b42111b8..6372610ed240 100644 --- a/drivers/net/ehea/ehea_main.c +++ b/drivers/net/ehea/ehea_main.c @@ -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, diff --git a/drivers/net/ehea/ehea_qmr.h b/drivers/net/ehea/ehea_qmr.h index f608a6c54af5..38104734a3be 100644 --- a/drivers/net/ehea/ehea_qmr.h +++ b/drivers/net/ehea/ehea_qmr.h @@ -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 |