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author | Ursula Braun <ubraun@linux.vnet.ibm.com> | 2016-09-15 14:39:25 +0200 |
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committer | David S. Miller <davem@davemloft.net> | 2016-09-16 04:29:14 -0400 |
commit | 243f750fc6f5d8e4dec984a9a785941c67452b8f (patch) | |
tree | 7efe90f4ba5d3f7b9ccb3a8824883cc7dab56452 /Documentation | |
parent | 903e48531e8b5d414c8f1960eacac24c31f60344 (diff) |
qeth: do not limit number of gso segments
To reduce the need of skb_linearize() calls, gso_max_segs of qeth
net_devices had been limited according to the maximum number of qdio SBAL
elements. But a gso segment cannot be larger than the mtu-size, while an
SBAL element can contain up to 4096 bytes. The gso_max_segs limitation
limits the maximum packet size given to the qeth driver. Performance
measurements with tso-enabled qeth network interfaces and mtu-size 1500
showed, that the disadvantage of smaller packets is much more severe than
the advantage of fewer skb_linearize() calls.
This patch gets rid of the gso_max_segs limitations in the qeth driver.
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions