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| author | Daniele Palmas <dnlplm@gmail.com> | 2023-01-11 16:05:19 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-01-13 13:23:52 +0300 |
| commit | 64b5d1f8f2d1b3f039cfb0dd8035892015543e58 (patch) | |
| tree | 9e0e0d998de321421d4be3ac1217ab579d6f9c20 /drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h | |
| parent | 31de2842399ae68c4b2887ffeaedebb7934f343e (diff) | |
| download | linux-64b5d1f8f2d1b3f039cfb0dd8035892015543e58.tar.xz | |
net: qualcomm: rmnet: add tx packets aggregation
Add tx packets aggregation.
Bidirectional TCP throughput tests through iperf with low-cat
Thread-x based modems revelead performance issues both in tx
and rx.
The Windows driver does not show this issue: inspecting USB
packets revealed that the only notable change is the driver
enabling tx packets aggregation.
Tx packets aggregation is by default disabled and can be enabled
by increasing the value of ETHTOOL_A_COALESCE_TX_MAX_AGGR_FRAMES.
The maximum aggregated size is by default set to a reasonably low
value in order to support the majority of modems.
This implementation is based on patches available in Code Aurora
repositories (msm kernel) whose main authors are
Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Sean Tranchetti <stranche@codeaurora.org>
Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
Reviewed-by: Subash Abhinov Kasiviswanathan <quic_subashab@quicinc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h')
| -rw-r--r-- | drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h index 3d3cba56c516..ed112d51ac5a 100644 --- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h +++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.h @@ -6,6 +6,7 @@ */ #include <linux/skbuff.h> +#include <linux/time.h> #include <net/gro_cells.h> #ifndef _RMNET_CONFIG_H_ @@ -19,6 +20,12 @@ struct rmnet_endpoint { struct hlist_node hlnode; }; +struct rmnet_egress_agg_params { + u32 bytes; + u32 count; + u64 time_nsec; +}; + /* One instance of this structure is instantiated for each real_dev associated * with rmnet. */ @@ -30,6 +37,19 @@ struct rmnet_port { struct hlist_head muxed_ep[RMNET_MAX_LOGICAL_EP]; struct net_device *bridge_ep; struct net_device *rmnet_dev; + + /* Egress aggregation information */ + struct rmnet_egress_agg_params egress_agg_params; + /* Protect aggregation related elements */ + spinlock_t agg_lock; + struct sk_buff *skbagg_head; + struct sk_buff *skbagg_tail; + int agg_state; + u8 agg_count; + struct timespec64 agg_time; + struct timespec64 agg_last; + struct hrtimer hrtimer; + struct work_struct agg_wq; }; extern struct rtnl_link_ops rmnet_link_ops; |