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Commit a745b0b9 authored Jul 12, 2015 by Hamad Kadmany

wil6210: RPS implementation

If RXHASH feature is enabled, and rps_en module parameter
is true (default), driver sets rxhash of each skb to 1 to enable RPS.
The core for processing the rx skb is determined by RPS mechanism
according to rx_cpus bit mask which is configured at user level.
For processing skbs on different core from the core which processes
the interrupts, it is recommended not to enable core 0 in rx_cpus bit mask.

Change-Id: I30cf64315ba475361b77e3b0bca3b09478593121
Signed-off-by: Hamad Kadmany <hkadmany@codeaurora.org>

parent 62488246

drivers/net/wireless/ath/wil6210/netdev.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -174,7 +174,7 @@ void wil_if_alloc(struct device dev)
		ndev->ieee80211_ptr = wdev;
		ndev->hw_features = NETIF_F_HW_CSUM \| NETIF_F_RXCSUM \|
		NETIF_F_SG \| NETIF_F_GRO \|
		NETIF_F_TSO \| NETIF_F_TSO6;
		NETIF_F_TSO \| NETIF_F_TSO6 \| NETIF_F_RXHASH;

		ndev->features \|= ndev->hw_features;
		SET_NETDEV_DEV(ndev, wiphy_dev(wdev->wiphy));

drivers/net/wireless/ath/wil6210/txrx.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -541,6 +541,14 @@ void wil_netif_rx_any(struct sk_buff skb, struct net_device ndev)
		[GRO_DROP] = "GRO_DROP",
		};

		if (ndev->features & NETIF_F_RXHASH)
		/* fake L4 to ensure it won't be re-calculated later
		* set hash to any non-zero value to activate rps
		* mechanism, core will be chosen according
		* to user-level rps configuration.
		*/
		skb_set_hash(skb, 1, PKT_HASH_TYPE_L4);

		skb_orphan(skb);

		if (wdev->iftype == NL80211_IFTYPE_AP && !wil->ap_isolate) {