From: Lazar Alexei <[email protected]> Add module parameter for configuring the headroom size in the skb allocation.
Signed-off-by: Lazar Alexei <[email protected]> Signed-off-by: Maya Erez <[email protected]> --- drivers/net/wireless/ath/wil6210/txrx.c | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/wil6210/txrx.c b/drivers/net/wireless/ath/wil6210/txrx.c index 62c04f0..89967ce 100644 --- a/drivers/net/wireless/ath/wil6210/txrx.c +++ b/drivers/net/wireless/ath/wil6210/txrx.c @@ -41,6 +41,32 @@ module_param(rx_large_buf, bool, 0444); MODULE_PARM_DESC(rx_large_buf, " allocate 8KB RX buffers, default - no"); +#define WIL6210_MAX_HEADROOM_SIZE (256) + +static ushort headroom_size; /* = 0; */ +static int headroom_size_set(const char *val, const struct kernel_param *kp) +{ + int ret; + + ret = param_set_uint(val, kp); + if (ret) + return ret; + + if (headroom_size > WIL6210_MAX_HEADROOM_SIZE) + return -EINVAL; + + return 0; +} + +static const struct kernel_param_ops headroom_ops = { + .set = headroom_size_set, + .get = param_get_ushort, +}; + +module_param_cb(headroom_size, &headroom_ops, &headroom_size, 0644); +MODULE_PARM_DESC(headroom_size, + " headroom size for rx skb allocation, default - 0"); + static inline uint wil_rx_snaplen(void) { return rx_align_2 ? 6 : 0; @@ -630,7 +656,7 @@ static int wil_rx_refill(struct wil6210_priv *wil, int count) u32 next_tail; int rc = 0; int headroom = ndev->type == ARPHRD_IEEE80211_RADIOTAP ? - WIL6210_RTAP_SIZE : 0; + WIL6210_RTAP_SIZE : headroom_size; for (; next_tail = wil_vring_next_tail(v), (next_tail != v->swhead) && (count-- > 0); -- 1.9.1
