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author | Alexei Avshalom Lazar <ailizaro@codeaurora.org> | 2019-06-16 09:26:00 +0200 |
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committer | Kalle Valo <kvalo@codeaurora.org> | 2019-06-27 19:50:01 +0200 |
commit | c5b3a6582b1e9fad0fb0b8658855387c0cbcc576 (patch) | |
tree | 0d2897d3e59982fe1c9a5d3ac0b8b3a374ff07f0 /drivers/net/wireless/ath/wil6210/debugfs.c | |
parent | wil6210: increase the frequency of status ring hw tail update (diff) | |
download | linux-c5b3a6582b1e9fad0fb0b8658855387c0cbcc576.tar.xz linux-c5b3a6582b1e9fad0fb0b8658855387c0cbcc576.zip |
wil6210: Add support for setting RBUFCAP configuration
RBUFCAP support added in FW.
The RBUFCAP feature is amendment to the block ack mechanism to
prevent overloading of the recipient’s memory space, which may
happen in case the link speed is higher than STA’s capability
to process or consume incoming data.
The block ack policy (ba_policy) is now controlled by FW so driver
should ignore this field.
Add new debugfs "rbufcap" to configure RBUFCAP.
Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/ath/wil6210/debugfs.c')
-rw-r--r-- | drivers/net/wireless/ath/wil6210/debugfs.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c b/drivers/net/wireless/ath/wil6210/debugfs.c index 9d6a922e81bc..cfeed928b2ce 100644 --- a/drivers/net/wireless/ath/wil6210/debugfs.c +++ b/drivers/net/wireless/ath/wil6210/debugfs.c @@ -741,6 +741,44 @@ static const struct file_operations fops_rxon = { .open = simple_open, }; +static ssize_t wil_write_file_rbufcap(struct file *file, + const char __user *buf, + size_t count, loff_t *ppos) +{ + struct wil6210_priv *wil = file->private_data; + int val; + int rc; + + rc = kstrtoint_from_user(buf, count, 0, &val); + if (rc) { + wil_err(wil, "Invalid argument\n"); + return rc; + } + /* input value: negative to disable, 0 to use system default, + * 1..ring size to set descriptor threshold + */ + wil_info(wil, "%s RBUFCAP, descriptors threshold - %d\n", + val < 0 ? "Disabling" : "Enabling", val); + + if (!wil->ring_rx.va || val > wil->ring_rx.size) { + wil_err(wil, "Invalid descriptors threshold, %d\n", val); + return -EINVAL; + } + + rc = wmi_rbufcap_cfg(wil, val < 0 ? 0 : 1, val < 0 ? 0 : val); + if (rc) { + wil_err(wil, "RBUFCAP config failed: %d\n", rc); + return rc; + } + + return count; +} + +static const struct file_operations fops_rbufcap = { + .write = wil_write_file_rbufcap, + .open = simple_open, +}; + /* block ack control, write: * - "add <ringid> <agg_size> <timeout>" to trigger ADDBA * - "del_tx <ringid> <reason>" to trigger DELBA for Tx side @@ -2328,6 +2366,7 @@ static const struct { {"tx_latency", 0644, &fops_tx_latency}, {"link_stats", 0644, &fops_link_stats}, {"link_stats_global", 0644, &fops_link_stats_global}, + {"rbufcap", 0244, &fops_rbufcap}, }; static void wil6210_debugfs_init_files(struct wil6210_priv *wil, |