diff options
| author | Julian Wiedmann <jwi@linux.ibm.com> | 2019-08-23 11:48:53 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-08-24 16:39:19 -0700 |
| commit | 9549d70a2d71526b8dc41cc0b255219ba46e5bf7 (patch) | |
| tree | d1af5220da765cc1ee1e2c0c4124f7b67a1f638b /drivers/s390/net/qeth_core.h | |
| parent | 96bd6c94bdf9de38b0fa0ec679fe40013f1c4576 (diff) | |
s390/qeth: add xmit_more support for IQD devices
IQD devices offer limited support for bulking: all frames in a TX buffer
need to have the same target. qeth_iqd_may_bulk() implements this
constraint, and allows us to defer the TX doorbell until
(a) the buffer is full (since each buffer needs its own doorbell), or
(b) the entire TX queue is full, or
(b) we reached the BQL limit.
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.h')
| -rw-r--r-- | drivers/s390/net/qeth_core.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index d5f796380cd0..e4b55f9aa062 100644 --- a/drivers/s390/net/qeth_core.h +++ b/drivers/s390/net/qeth_core.h @@ -378,6 +378,28 @@ enum qeth_header_ids { #define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20 #define QETH_HDR_EXT_UDP 0x40 /*bit off for TCP*/ +static inline bool qeth_l2_same_vlan(struct qeth_hdr_layer2 *h1, + struct qeth_hdr_layer2 *h2) +{ + return !((h1->flags[2] ^ h2->flags[2]) & QETH_LAYER2_FLAG_VLAN) && + h1->vlan_id == h2->vlan_id; +} + +static inline bool qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 *h1, + struct qeth_hdr_layer3 *h2) +{ + return !((h1->ext_flags ^ h2->ext_flags) & QETH_HDR_EXT_VLAN_FRAME) && + h1->vlan_id == h2->vlan_id; +} + +static inline bool qeth_l3_same_next_hop(struct qeth_hdr_layer3 *h1, + struct qeth_hdr_layer3 *h2) +{ + return !((h1->flags ^ h2->flags) & QETH_HDR_IPV6) && + ipv6_addr_equal(&h1->next_hop.ipv6_addr, + &h2->next_hop.ipv6_addr); +} + enum qeth_qdio_info_states { QETH_QDIO_UNINITIALIZED, QETH_QDIO_ALLOCATED, @@ -508,6 +530,8 @@ struct qeth_qdio_out_q { atomic_t set_pci_flags_count; struct napi_struct napi; struct timer_list timer; + struct qeth_hdr *prev_hdr; + u8 bulk_start; }; #define qeth_for_each_output_queue(card, q, i) \ |