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(parent: 96bd6c9) | patch
s390/qeth: add xmit_more support for IQD devices
authorJulian Wiedmann <jwi@linux.ibm.com>
Fri, 23 Aug 2019 09:48:53 +0000 (11:48 +0200)
committerDavid S. Miller <davem@davemloft.net>
Sat, 24 Aug 2019 23:39:19 +0000 (16:39 -0700)
commit9549d70a2d71526b8dc41cc0b255219ba46e5bf7
treed1af5220da765cc1ee1e2c0c4124f7b67a1f638btree | snapshot
parent96bd6c94bdf9de38b0fa0ec679fe40013f1c4576commit | 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>
drivers/s390/net/qeth_core.h diff | blob | history
drivers/s390/net/qeth_core_main.c diff | blob | history
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