diff options
Diffstat (limited to 'drivers/s390/net/qeth_l3_main.c')
-rw-r--r-- | drivers/s390/net/qeth_l3_main.c | 142 |
1 files changed, 97 insertions, 45 deletions
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index 4ca28c16ca8..fd1b6ed3721 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -41,6 +41,32 @@ static int qeth_l3_deregister_addr_entry(struct qeth_card *, static int __qeth_l3_set_online(struct ccwgroup_device *, int); static int __qeth_l3_set_offline(struct ccwgroup_device *, int); +int qeth_l3_set_large_send(struct qeth_card *card, + enum qeth_large_send_types type) +{ + int rc = 0; + + card->options.large_send = type; + if (card->dev == NULL) + return 0; + + if (card->options.large_send == QETH_LARGE_SEND_TSO) { + if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) { + card->dev->features |= NETIF_F_TSO | NETIF_F_SG | + NETIF_F_HW_CSUM; + } else { + card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG | + NETIF_F_HW_CSUM); + card->options.large_send = QETH_LARGE_SEND_NO; + rc = -EOPNOTSUPP; + } + } else { + card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG | + NETIF_F_HW_CSUM); + card->options.large_send = QETH_LARGE_SEND_NO; + } + return rc; +} static int qeth_l3_isxdigit(char *buf) { @@ -1439,6 +1465,35 @@ static int qeth_l3_send_checksum_command(struct qeth_card *card) return 0; } +int qeth_l3_set_rx_csum(struct qeth_card *card, + enum qeth_checksum_types csum_type) +{ + int rc = 0; + + if (card->options.checksum_type == HW_CHECKSUMMING) { + if ((csum_type != HW_CHECKSUMMING) && + (card->state != CARD_STATE_DOWN)) { + rc = qeth_l3_send_simple_setassparms(card, + IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0); + if (rc) + return -EIO; + } + } else { + if (csum_type == HW_CHECKSUMMING) { + if (card->state != CARD_STATE_DOWN) { + if (!qeth_is_supported(card, + IPA_INBOUND_CHECKSUM)) + return -EPERM; + rc = qeth_l3_send_checksum_command(card); + if (rc) + return -EIO; + } + } + } + card->options.checksum_type = csum_type; + return rc; +} + static int qeth_l3_start_ipa_checksum(struct qeth_card *card) { int rc = 0; @@ -1506,6 +1561,8 @@ static int qeth_l3_start_ipa_tso(struct qeth_card *card) static int qeth_l3_start_ipassists(struct qeth_card *card) { QETH_DBF_TEXT(TRACE, 3, "strtipas"); + + qeth_set_access_ctrl_online(card); /* go on*/ qeth_l3_start_ipa_arp_processing(card); /* go on*/ qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/ qeth_l3_start_ipa_source_mac(card); /* go on*/ @@ -2684,6 +2741,24 @@ static void qeth_tx_csum(struct sk_buff *skb) *(__sum16 *)(skb->data + offset) = csum_fold(csum); } +static inline int qeth_l3_tso_elements(struct sk_buff *skb) +{ + unsigned long tcpd = (unsigned long)tcp_hdr(skb) + + tcp_hdr(skb)->doff * 4; + int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data); + int elements = PFN_UP(tcpd + tcpd_len) - PFN_DOWN(tcpd); + elements += skb_shinfo(skb)->nr_frags; + return elements; +} + +static inline int qeth_l3_tso_check(struct sk_buff *skb) +{ + int len = ((unsigned long)tcp_hdr(skb) + tcp_hdr(skb)->doff * 4) - + (unsigned long)skb->data; + return (((unsigned long)skb->data & PAGE_MASK) != + (((unsigned long)skb->data + len) & PAGE_MASK)); +} + static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { int rc; @@ -2777,16 +2852,21 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) /* fix hardware limitation: as long as we do not have sbal * chaining we can not send long frag lists */ - if ((large_send == QETH_LARGE_SEND_TSO) && - ((skb_shinfo(new_skb)->nr_frags + 2) > 16)) { - if (skb_linearize(new_skb)) - goto tx_drop; + if (large_send == QETH_LARGE_SEND_TSO) { + if (qeth_l3_tso_elements(new_skb) + 1 > 16) { + if (skb_linearize(new_skb)) + goto tx_drop; + if (card->options.performance_stats) + card->perf_stats.tx_lin++; + } } if ((large_send == QETH_LARGE_SEND_TSO) && (cast_type == RTN_UNSPEC)) { hdr = (struct qeth_hdr *)skb_push(new_skb, sizeof(struct qeth_hdr_tso)); + if (qeth_l3_tso_check(new_skb)) + QETH_DBF_MESSAGE(2, "tso skb misaligned\n"); memset(hdr, 0, sizeof(struct qeth_hdr_tso)); qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type); qeth_tso_fill_header(card, hdr, new_skb); @@ -2903,46 +2983,28 @@ static u32 qeth_l3_ethtool_get_rx_csum(struct net_device *dev) static int qeth_l3_ethtool_set_rx_csum(struct net_device *dev, u32 data) { struct qeth_card *card = dev->ml_priv; - enum qeth_card_states old_state; enum qeth_checksum_types csum_type; - if ((card->state != CARD_STATE_UP) && - (card->state != CARD_STATE_DOWN)) - return -EPERM; - if (data) csum_type = HW_CHECKSUMMING; else csum_type = SW_CHECKSUMMING; - if (card->options.checksum_type != csum_type) { - old_state = card->state; - if (card->state == CARD_STATE_UP) - __qeth_l3_set_offline(card->gdev, 1); - card->options.checksum_type = csum_type; - if (old_state == CARD_STATE_UP) - __qeth_l3_set_online(card->gdev, 1); - } - return 0; + return qeth_l3_set_rx_csum(card, csum_type); } static int qeth_l3_ethtool_set_tso(struct net_device *dev, u32 data) { struct qeth_card *card = dev->ml_priv; + int rc = 0; if (data) { - if (card->options.large_send == QETH_LARGE_SEND_NO) { - if (card->info.type == QETH_CARD_TYPE_IQD) - return -EPERM; - else - card->options.large_send = QETH_LARGE_SEND_TSO; - dev->features |= NETIF_F_TSO; - } + rc = qeth_l3_set_large_send(card, QETH_LARGE_SEND_TSO); } else { dev->features &= ~NETIF_F_TSO; card->options.large_send = QETH_LARGE_SEND_NO; } - return 0; + return rc; } static const struct ethtool_ops qeth_l3_ethtool_ops = { @@ -3058,6 +3120,7 @@ static int qeth_l3_setup_netdev(struct qeth_card *card) NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER; card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; + card->dev->gso_max_size = 15 * PAGE_SIZE; SET_NETDEV_DEV(card->dev, &card->gdev->dev); return register_netdev(card->dev); @@ -3154,32 +3217,19 @@ static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode) qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1); recover_flag = card->state; - rc = ccw_device_set_online(CARD_RDEV(card)); - if (rc) { - QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); - return -EIO; - } - rc = ccw_device_set_online(CARD_WDEV(card)); - if (rc) { - QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); - return -EIO; - } - rc = ccw_device_set_online(CARD_DDEV(card)); - if (rc) { - QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); - return -EIO; - } - rc = qeth_core_hardsetup_card(card); if (rc) { QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); + rc = -ENODEV; goto out_remove; } qeth_l3_query_ipassists(card, QETH_PROT_IPV4); - if (!card->dev && qeth_l3_setup_netdev(card)) + if (!card->dev && qeth_l3_setup_netdev(card)) { + rc = -ENODEV; goto out_remove; + } card->state = CARD_STATE_HARDSETUP; qeth_print_status_message(card); @@ -3196,10 +3246,11 @@ static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode) card->lan_online = 0; return 0; } + rc = -ENODEV; goto out_remove; } else card->lan_online = 1; - qeth_set_large_send(card, card->options.large_send); + qeth_l3_set_large_send(card, card->options.large_send); rc = qeth_l3_setadapter_parms(card); if (rc) @@ -3218,6 +3269,7 @@ static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode) rc = qeth_init_qdio_queues(card); if (rc) { QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); + rc = -ENODEV; goto out_remove; } card->state = CARD_STATE_SOFTSETUP; @@ -3248,7 +3300,7 @@ out_remove: card->state = CARD_STATE_RECOVER; else card->state = CARD_STATE_DOWN; - return -ENODEV; + return rc; } static int qeth_l3_set_online(struct ccwgroup_device *gdev) |