diff options
Diffstat (limited to 'drivers/s390/net/qeth_l2_main.c')
| -rw-r--r-- | drivers/s390/net/qeth_l2_main.c | 87 |
1 files changed, 80 insertions, 7 deletions
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index a4e36526d9cd..dc905b37aa12 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -252,6 +252,23 @@ static inline int qeth_l2_get_cast_type(struct qeth_card *card, return RTN_UNSPEC; } +static inline void qeth_l2_hdr_csum(struct qeth_card *card, + struct qeth_hdr *hdr, struct sk_buff *skb) +{ + struct iphdr *iph = ip_hdr(skb); + + /* tcph->check contains already the pseudo hdr checksum + * so just set the header flags + */ + if (iph->protocol == IPPROTO_UDP) + hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP; + hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ | + QETH_HDR_EXT_CSUM_HDR_REQ; + iph->check = 0; + if (card->options.performance_stats) + card->perf_stats.tx_csum++; +} + static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, struct sk_buff *skb, int cast_type) { @@ -390,6 +407,38 @@ static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, return rc; } +static netdev_features_t qeth_l2_fix_features(struct net_device *dev, + netdev_features_t features) +{ + struct qeth_card *card = dev->ml_priv; + + QETH_DBF_TEXT(SETUP, 2, "fixfeat"); + if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) + features &= ~NETIF_F_IP_CSUM; + if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) + features &= ~NETIF_F_RXCSUM; + QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); + return features; +} + +static int qeth_l2_set_features(struct net_device *dev, + netdev_features_t features) +{ + struct qeth_card *card = dev->ml_priv; + netdev_features_t changed = dev->features ^ features; + + QETH_DBF_TEXT(SETUP, 2, "setfeat"); + QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); + + if (card->state == CARD_STATE_DOWN || + card->state == CARD_STATE_RECOVER) + return 0; + + if (!(changed & NETIF_F_RXCSUM)) + return 0; + return qeth_set_rx_csum(card, features & NETIF_F_RXCSUM ? 1 : 0); +} + static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) { QETH_DBF_TEXT(SETUP , 2, "stopcard"); @@ -450,7 +499,15 @@ static int qeth_l2_process_inbound_buffer(struct qeth_card *card, case QETH_HEADER_TYPE_LAYER2: skb->pkt_type = PACKET_HOST; skb->protocol = eth_type_trans(skb, skb->dev); - skb->ip_summed = CHECKSUM_NONE; + if ((card->dev->features & NETIF_F_RXCSUM) + && ((hdr->hdr.l2.flags[1] & + (QETH_HDR_EXT_CSUM_HDR_REQ | + QETH_HDR_EXT_CSUM_TRANSP_REQ)) == + (QETH_HDR_EXT_CSUM_HDR_REQ | + QETH_HDR_EXT_CSUM_TRANSP_REQ))) + skb->ip_summed = CHECKSUM_UNNECESSARY; + else + skb->ip_summed = CHECKSUM_NONE; if (skb->protocol == htons(ETH_P_802_2)) *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; len = skb->len; @@ -803,6 +860,8 @@ static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) sizeof(struct qeth_hdr)); skb_set_mac_header(new_skb, sizeof(struct qeth_hdr)); qeth_l2_fill_header(card, hdr, new_skb, cast_type); + if (new_skb->ip_summed == CHECKSUM_PARTIAL) + qeth_l2_hdr_csum(card, hdr, new_skb); } } @@ -968,6 +1027,8 @@ static const struct net_device_ops qeth_l2_netdev_ops = { .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, .ndo_tx_timeout = qeth_tx_timeout, + .ndo_fix_features = qeth_l2_fix_features, + .ndo_set_features = qeth_l2_set_features }; static int qeth_l2_setup_netdev(struct qeth_card *card) @@ -997,6 +1058,11 @@ static int qeth_l2_setup_netdev(struct qeth_card *card) (card->info.type != QETH_CARD_TYPE_OSN) ? &qeth_l2_ethtool_ops : &qeth_l2_osn_ops; card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; + if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { + card->dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM; + /* Turn on RX offloading per default */ + card->dev->features |= NETIF_F_RXCSUM; + } card->info.broadcast_capable = 1; qeth_l2_request_initial_mac(card); SET_NETDEV_DEV(card->dev, &card->gdev->dev); @@ -1004,6 +1070,17 @@ static int qeth_l2_setup_netdev(struct qeth_card *card) return register_netdev(card->dev); } +static int qeth_l2_start_ipassists(struct qeth_card *card) +{ + /* configure isolation level */ + if (qeth_set_access_ctrl_online(card, 0)) + return -ENODEV; + if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) + qeth_set_rx_csum(card, 1); + qeth_start_ipa_tx_checksum(card); + return 0; +} + static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); @@ -1069,12 +1146,8 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) contin: if ((card->info.type == QETH_CARD_TYPE_OSD) || (card->info.type == QETH_CARD_TYPE_OSX)) { - /* configure isolation level */ - rc = qeth_set_access_ctrl_online(card, 0); - if (rc) { - rc = -ENODEV; + if (qeth_l2_start_ipassists(card)) goto out_remove; - } } if (card->info.type != QETH_CARD_TYPE_OSN && @@ -1453,7 +1526,7 @@ static void qeth_bridge_emit_host_event(struct qeth_card *card, } if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { snprintf(str[i], sizeof(str[i]), "MAC=%pM", - addr_lnid->mac); + addr_lnid->mac); env[i] = str[i]; i++; } snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", |