diff options
author | Julian Wiedmann <jwi@linux.ibm.com> | 2020-05-06 10:09:40 +0200 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2020-05-06 14:11:25 -0700 |
commit | 3be83016275d1e113ce8c4aa477174a8a6d7a55d (patch) | |
tree | bc7428abc479d8977b6c53469e62589cc067b2e0 /drivers/s390/net/qeth_core_main.c | |
parent | 2f8649900b7d0dced6aff0765ea15e874a91b73c (diff) |
s390/qeth: keep track of LP2LP capability for csum offload
When enabling TX CSO, make a note of whether the device has support for
LP2LP offloading. This will become relevant in subsequent patches.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390/net/qeth_core_main.c')
-rw-r--r-- | drivers/s390/net/qeth_core_main.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index f7689461c242..ef96890eea5c 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -6300,7 +6300,7 @@ static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype, } static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype, - enum qeth_prot_versions prot) + enum qeth_prot_versions prot, u8 *lp2lp) { u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP; struct qeth_cmd_buffer *iob; @@ -6352,8 +6352,11 @@ static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype, dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n", cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot); - if (!qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP) && - cstype == IPA_OUTBOUND_CHECKSUM) + + if (lp2lp) + *lp2lp = qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP); + + if (lp2lp && !*lp2lp) dev_warn(&card->gdev->dev, "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", QETH_CARD_IFNAME(card)); @@ -6361,9 +6364,9 @@ static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype, } static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype, - enum qeth_prot_versions prot) + enum qeth_prot_versions prot, u8 *lp2lp) { - return on ? qeth_set_csum_on(card, cstype, prot) : + return on ? qeth_set_csum_on(card, cstype, prot, lp2lp) : qeth_set_csum_off(card, cstype, prot); } @@ -6451,13 +6454,13 @@ static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on) if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, - QETH_PROT_IPV4); + QETH_PROT_IPV4, NULL); if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) /* no/one Offload Assist available, so the rc is trivial */ return rc_ipv4; rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, - QETH_PROT_IPV6); + QETH_PROT_IPV6, NULL); if (on) /* enable: success if any Assist is active */ @@ -6504,13 +6507,15 @@ int qeth_set_features(struct net_device *dev, netdev_features_t features) if ((changed & NETIF_F_IP_CSUM)) { rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM, - IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4); + IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4, + &card->info.has_lp2lp_cso_v4); if (rc) changed ^= NETIF_F_IP_CSUM; } if (changed & NETIF_F_IPV6_CSUM) { rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM, - IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6); + IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6, + &card->info.has_lp2lp_cso_v6); if (rc) changed ^= NETIF_F_IPV6_CSUM; } |