diff options
Diffstat (limited to 'drivers/s390/net/qeth_core_main.c')
-rw-r--r-- | drivers/s390/net/qeth_core_main.c | 77 |
1 files changed, 46 insertions, 31 deletions
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 22470a3b182f..34993009a9e1 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -20,6 +20,7 @@ #include <linux/kthread.h> #include <linux/slab.h> #include <net/iucv/af_iucv.h> +#include <net/dsfield.h> #include <asm/ebcdic.h> #include <asm/io.h> @@ -3670,42 +3671,56 @@ void qeth_qdio_output_handler(struct ccw_device *ccwdev, } EXPORT_SYMBOL_GPL(qeth_qdio_output_handler); +/** + * Note: Function assumes that we have 4 outbound queues. + */ int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, int ipv, int cast_type) { - if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD || - card->info.type == QETH_CARD_TYPE_OSX)) - return card->qdio.default_out_queue; - switch (card->qdio.no_out_queues) { - case 4: - if (cast_type && card->info.is_multicast_different) - return card->info.is_multicast_different & - (card->qdio.no_out_queues - 1); - if (card->qdio.do_prio_queueing && (ipv == 4)) { - const u8 tos = ip_hdr(skb)->tos; - - if (card->qdio.do_prio_queueing == - QETH_PRIO_Q_ING_TOS) { - if (tos & IP_TOS_NOTIMPORTANT) - return 3; - if (tos & IP_TOS_HIGHRELIABILITY) - return 2; - if (tos & IP_TOS_HIGHTHROUGHPUT) - return 1; - if (tos & IP_TOS_LOWDELAY) - return 0; - } - if (card->qdio.do_prio_queueing == - QETH_PRIO_Q_ING_PREC) - return 3 - (tos >> 6); - } else if (card->qdio.do_prio_queueing && (ipv == 6)) { - /* TODO: IPv6!!! */ + __be16 *tci; + u8 tos; + + if (cast_type && card->info.is_multicast_different) + return card->info.is_multicast_different & + (card->qdio.no_out_queues - 1); + + switch (card->qdio.do_prio_queueing) { + case QETH_PRIO_Q_ING_TOS: + case QETH_PRIO_Q_ING_PREC: + switch (ipv) { + case 4: + tos = ipv4_get_dsfield(ip_hdr(skb)); + break; + case 6: + tos = ipv6_get_dsfield(ipv6_hdr(skb)); + break; + default: + return card->qdio.default_out_queue; } - return card->qdio.default_out_queue; - case 1: /* fallthrough for single-out-queue 1920-device */ + if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) + return ~tos >> 6 & 3; + if (tos & IPTOS_MINCOST) + return 3; + if (tos & IPTOS_RELIABILITY) + return 2; + if (tos & IPTOS_THROUGHPUT) + return 1; + if (tos & IPTOS_LOWDELAY) + return 0; + break; + case QETH_PRIO_Q_ING_SKB: + if (skb->priority > 5) + return 0; + return ~skb->priority >> 1 & 3; + case QETH_PRIO_Q_ING_VLAN: + tci = &((struct ethhdr *)skb->data)->h_proto; + if (*tci == ETH_P_8021Q) + return ~*(tci + 1) >> (VLAN_PRIO_SHIFT + 1) & 3; + break; default: - return card->qdio.default_out_queue; + break; } + return card->qdio.default_out_queue; } EXPORT_SYMBOL_GPL(qeth_get_priority_queue); @@ -5824,7 +5839,7 @@ static int __init qeth_core_init(void) if (rc) goto out_err; qeth_core_root_dev = root_device_register("qeth"); - rc = PTR_RET(qeth_core_root_dev); + rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); if (rc) goto register_err; qeth_core_header_cache = kmem_cache_create("qeth_hdr", |