diff options
| author | Frank Blaschka <frank.blaschka@de.ibm.com> | 2010-09-07 21:14:42 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-09-08 14:31:02 -0700 |
| commit | a1c3ed4c9ca01dded8d511a1d1daf271fbae8d89 (patch) | |
| tree | 1ff0b2887e550f127fe844222b6833b831a4b036 /drivers/s390/net/qeth_core.h | |
| parent | 81d53749416995538f830c8e4d3fbaf1769b9375 (diff) | |
qeth: NAPI support for l2 and l3 discipline
This patch adds NAPI support to the qeth layer 2 and layer 3
discipline. It is important to understand that we can not enable/disable
IRQs as usual, we have to use the corresponding new QDIO interface.
Also to not overdraw the budget we have to stop and restart buffer
processing at any point during processing a bulk of QDIO buffers.
Having the driver NAPI enabled it is possible to turn on GRO for the
layer 3 discipline.
Signed-off-by: Frank Blaschka <frank.blaschka@de.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 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index d1257768be90..6be43eb126b4 100644 --- a/drivers/s390/net/qeth_core.h +++ b/drivers/s390/net/qeth_core.h @@ -676,6 +676,7 @@ enum qeth_discipline_id { }; struct qeth_discipline { + void (*start_poll)(struct ccw_device *, int, unsigned long); qdio_handler_t *input_handler; qdio_handler_t *output_handler; int (*recover)(void *ptr); @@ -702,6 +703,16 @@ struct qeth_skb_data { #define QETH_SKB_MAGIC 0x71657468 #define QETH_SIGA_CC2_RETRIES 3 +struct qeth_rx { + int b_count; + int b_index; + struct qdio_buffer_element *b_element; + int e_offset; + int qdio_err; +}; + +#define QETH_NAPI_WEIGHT 128 + struct qeth_card { struct list_head list; enum qeth_card_states state; @@ -749,6 +760,8 @@ struct qeth_card { debug_info_t *debug; struct mutex conf_mutex; struct mutex discipline_mutex; + struct napi_struct napi; + struct qeth_rx rx; }; struct qeth_card_list_struct { @@ -831,6 +844,10 @@ struct sk_buff *qeth_core_get_next_skb(struct qeth_card *, struct qdio_buffer *, struct qdio_buffer_element **, int *, struct qeth_hdr **); void qeth_schedule_recovery(struct qeth_card *); +void qeth_qdio_start_poll(struct ccw_device *, int, unsigned long); +void qeth_qdio_input_handler(struct ccw_device *, + unsigned int, unsigned int, int, + int, unsigned long); void qeth_qdio_output_handler(struct ccw_device *, unsigned int, int, int, int, unsigned long); void qeth_clear_ipacmd_list(struct qeth_card *); |