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| author | Andy Gospodarek | 2018-01-09 22:06:20 +0100 |
|---|---|---|
| committer | David S. Miller | 2018-01-10 21:27:45 +0100 |
| commit | 6a8788f25625eab31ffa624da2db758ecae6151d (patch) | |
| tree | c27c96955cea4ec9636eb07cf70437c34a810723 /drivers/net/ethernet/broadcom/bnxt/bnxt_dim.c | |
| parent | net/dim: use struct net_dim_sample as arg to net_dim (diff) | |
| download | kernel-qcow2-linux-6a8788f25625eab31ffa624da2db758ecae6151d.tar.gz kernel-qcow2-linux-6a8788f25625eab31ffa624da2db758ecae6151d.tar.xz kernel-qcow2-linux-6a8788f25625eab31ffa624da2db758ecae6151d.zip | |
bnxt_en: add support for software dynamic interrupt moderation
This implements the changes needed for the bnxt_en driver to add support
for dynamic interrupt moderation per ring.
This does add additional counters in the receive path, but testing shows
that any additional instructions are offset by throughput gain when the
default configuration is for low latency.
Signed-off-by: Andy Gospodarek <gospo@broadcom.com>
Acked-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt/bnxt_dim.c')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt_dim.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_dim.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_dim.c new file mode 100644 index 000000000000..408dd190331e --- /dev/null +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_dim.c @@ -0,0 +1,32 @@ +/* Broadcom NetXtreme-C/E network driver. + * + * Copyright (c) 2017-2018 Broadcom Limited + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation. + */ + +#include <linux/net_dim.h> +#include "bnxt_hsi.h" +#include "bnxt.h" + +void bnxt_dim_work(struct work_struct *work) +{ + struct net_dim *dim = container_of(work, struct net_dim, + work); + struct bnxt_cp_ring_info *cpr = container_of(dim, + struct bnxt_cp_ring_info, + dim); + struct bnxt_napi *bnapi = container_of(cpr, + struct bnxt_napi, + cp_ring); + struct net_dim_cq_moder cur_profile = net_dim_get_profile(dim->mode, + dim->profile_ix); + + cpr->rx_ring_coal.coal_ticks = cur_profile.usec; + cpr->rx_ring_coal.coal_bufs = cur_profile.pkts; + + bnxt_hwrm_set_ring_coal(bnapi->bp, bnapi); + dim->state = NET_DIM_START_MEASURE; +} |