diff options
| author |   Julian Wiedmann <jwi@linux.vnet.ibm.com> | 2018-04-26 09:42:17 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-04-27 13:38:48 -0400 |
| commit | 6195b936610018d11bbb67bd97158d50bdaa2767 (patch) | |
| tree | 965e5e22194e5add2cd4c8635a5abaf76d2e14a2 /drivers/s390/net/qeth_core.h | |
| parent | s390/qeth: de-indent else after return (diff) | |
| download | linux-dev-6195b936610018d11bbb67bd97158d50bdaa2767.tar.xz linux-dev-6195b936610018d11bbb67bd97158d50bdaa2767.zip | |
s390/qeth: extract csum offload helpers
This consolidates the checksum offload code that was duplicated
over the two qeth subdrivers.
Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390/net/qeth_core.h')
| -rw-r--r-- | drivers/s390/net/qeth_core.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index 6d7a72da71dd..a8114758075f 100644 --- a/drivers/s390/net/qeth_core.h +++ b/drivers/s390/net/qeth_core.h @@ -864,6 +864,27 @@ static inline int qeth_get_ip_version(struct sk_buff *skb) } } +static inline void qeth_rx_csum(struct qeth_card *card, struct sk_buff *skb, + u8 flags) +{ + if ((card->dev->features & NETIF_F_RXCSUM) && + (flags & QETH_HDR_EXT_CSUM_HDR_REQ) && + (flags & QETH_HDR_EXT_CSUM_TRANSP_REQ)) + skb->ip_summed = CHECKSUM_UNNECESSARY; + else + skb->ip_summed = CHECKSUM_NONE; +} + +static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags) +{ + *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ; + if (ip_hdr(skb)->protocol == IPPROTO_UDP) + *flags |= QETH_HDR_EXT_UDP; + /* some HW requires combined L3+L4 csum offload: */ + *flags |= QETH_HDR_EXT_CSUM_HDR_REQ; + ip_hdr(skb)->check = 0; +} + static inline void qeth_put_buffer_pool_entry(struct qeth_card *card, struct qeth_buffer_pool_entry *entry) { |