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Commit 9368586e authored by Sarada Prasanna Garnayak's avatar Sarada Prasanna Garnayak Committed by Gerrit - the friendly Code Review server
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ath10k: enable neighbor solicitation offload in wow suspend 



In IPV6 the neighbor solicitations are used by nodes to determine
the link layer address of a neighbor and neighbor advertisements
are used by nodes to respond to a neighbor solicitation message.

During WOW suspend offload the neighbor solicitation packet handling
method to WLAN firmware, this adds support to prevent the device
wakeup by neighbor solicitation packet.

CRs-Fixed: 2217590
Change-Id: I5d860e6651b7c62223d9d00886fc386dcf647cab
Signed-off-by: default avatarSarada Prasanna Garnayak <sgarna@codeaurora.org>
parent ef00227c

drivers/net/wireless/ath/ath10k/wmi-tlv.c

+25 −8
Original line number Diff line number Diff line
@@ -3123,13 +3123,14 @@ ath10k_wmi_tlv_op_gen_set_arp_ns_offload(struct ath10k *ar, 
	void *ptr;

	int i;

	struct wmi_ns_arp_offload_req *arp = &arvif->arp_offload;

	struct wmi_ns_arp_offload_req *ns = &arvif->ns_offload;

	struct wmi_ns_offload *ns_tuple;

	struct wmi_arp_offload *arp_tuple;



	len = sizeof(*cmd) + sizeof(*tlv) +

		sizeof(*tlv) + WMI_MAX_NS_OFFLOADS *

		sizeof(*tlv) + WMI_NS_ARP_OFFLOAD *

		(sizeof(struct wmi_ns_offload) + sizeof(*tlv)) +

		sizeof(*tlv) + WMI_MAX_ARP_OFFLOADS *

		sizeof(*tlv) + WMI_NS_ARP_OFFLOAD *

		(sizeof(struct wmi_arp_offload) + sizeof(*tlv));



	skb = ath10k_wmi_alloc_skb(ar, len);
@@ -3147,33 +3148,49 @@ ath10k_wmi_tlv_op_gen_set_arp_ns_offload(struct ath10k *ar, 
	ptr += (sizeof(*tlv) + sizeof(*cmd));

	tlv = ptr;

	tlv->tag = __cpu_to_le16(WMI_TLV_TAG_ARRAY_STRUCT);

	tlv->len = __cpu_to_le16(WMI_MAX_NS_OFFLOADS *

	tlv->len = __cpu_to_le16(WMI_NS_ARP_OFFLOAD *

		(sizeof(struct wmi_ns_offload) + sizeof(*tlv)));

	ptr += sizeof(*tlv);

	tlv = ptr;



	for (i = 0; i < WMI_MAX_NS_OFFLOADS; i++) {

	for (i = 0; i < WMI_NS_ARP_OFFLOAD; i++) {

		tlv->tag = __cpu_to_le16(WMI_TLV_TAG_STRUCT_NS_OFFLOAD_TUPLE);

		tlv->len = __cpu_to_le16(sizeof(struct wmi_ns_offload));

		ns_tuple = (struct wmi_ns_offload *)tlv->value;

		ns_tuple->flags |= __cpu_to_le32(WMI_ARP_NS_OFFLOAD_DISABLE);

		if (ns->enable_offload) {

			ns_tuple->flags |=

				__cpu_to_le32(WMI_ARP_NS_OFF_FLAGS_VALID);

			if (ns->info.target_addr_valid.s6_addr[i]) {

				memcpy(&ns_tuple->target_ipaddr[0],

				       &ns->info.target_addr[i],

				       sizeof(struct in6_addr));

			}

			memcpy(&ns_tuple->solicitation_ipaddr,

			       &ns->info.self_addr[i], sizeof(struct in6_addr));

			if (ns->info.target_ipv6_ac.s6_addr[i] == IPV6_ADDR_ANY)

				ns_tuple->flags |=

					__cpu_to_le32(WMI_NSOFF_IPV6_ANYCAST);

		} else {

			ns_tuple->flags |=

				__cpu_to_le32(WMI_ARP_NS_OFFLOAD_DISABLE);

		}

		ptr += (sizeof(*tlv) + sizeof(struct wmi_ns_offload));

		tlv = ptr;

	}



	tlv->tag = __cpu_to_le16(WMI_TLV_TAG_ARRAY_STRUCT);

	tlv->len = __cpu_to_le16(WMI_MAX_ARP_OFFLOADS *

	tlv->len = __cpu_to_le16(WMI_NS_ARP_OFFLOAD *

		(sizeof(struct wmi_arp_offload) + sizeof(*tlv)));

	ptr += sizeof(*tlv);

	tlv = ptr;



	for (i = 0; i < WMI_MAX_ARP_OFFLOADS; i++) {

	for (i = 0; i < WMI_NS_ARP_OFFLOAD; i++) {

		tlv->tag = __cpu_to_le16(WMI_TLV_TAG_STRUCT_ARP_OFFLOAD_TUPLE);

		tlv->len = __cpu_to_le16(sizeof(struct wmi_arp_offload));

		arp_tuple = (struct wmi_arp_offload *)tlv->value;

		if (arp->enable_offload && (i == 0)) {

			arp_tuple->flags |=

				__cpu_to_le32(WMI_ARPOFF_FLAGS_VALID);

				__cpu_to_le32(WMI_ARP_NS_OFF_FLAGS_VALID);

			memcpy(&arp_tuple->target_ipaddr,

			       &arp->params.ipv4_addr,

			       sizeof(arp_tuple->target_ipaddr));

drivers/net/wireless/ath/ath10k/wmi.h

+7 −7
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ 
#include <linux/types.h>

#include <net/mac80211.h>

#include <linux/ipv6.h>

#include <net/ipv6.h>

#include <linux/in.h>



/*
@@ -2887,13 +2888,12 @@ struct wmi_start_scan_common { 
} __packed;



/* ARP-NS offload data structure */

#define WMI_NSOFF_MAX_TARGET_IPS	2

#define WMI_MAX_NS_OFFLOADS		2

#define WMI_MAX_ARP_OFFLOADS		2

#define WMI_ARPOFF_FLAGS_VALID		BIT(0)

#define WMI_NS_ARP_OFFLOAD		2

#define WMI_ARP_NS_OFF_FLAGS_VALID	BIT(0)

#define WMI_IPV4_ARP_REPLY_OFFLOAD	0

#define WMI_ARP_NS_OFFLOAD_DISABLE	0

#define WMI_ARP_NS_OFFLOAD_ENABLE	1

#define WMI_NSOFF_IPV6_ANYCAST		BIT(3)



struct wmi_ns_offload_info {

	struct in6_addr src_addr;
@@ -2902,7 +2902,7 @@ struct wmi_ns_offload_info { 
	struct wmi_mac_addr self_macaddr;

	u8 src_ipv6_addr_valid;

	struct in6_addr target_addr_valid;

	struct in6_addr target_addr_ac_type;

	struct in6_addr target_ipv6_ac;

	u8 slot_idx;

} __packed;
@@ -2914,13 +2914,13 @@ struct wmi_ns_arp_offload_req { 
		struct in_addr ipv4_addr;

		struct in6_addr ipv6_addr;

	} params;

	struct wmi_ns_offload_info offload_info;

	struct wmi_ns_offload_info info;

	struct wmi_mac_addr bssid;

} __packed;



struct wmi_ns_offload {

	__le32 flags;

	struct in6_addr target_ipaddr[WMI_NSOFF_MAX_TARGET_IPS];

	struct in6_addr target_ipaddr[WMI_NS_ARP_OFFLOAD];

	struct in6_addr solicitation_ipaddr;

	struct in6_addr remote_ipaddr;

	struct wmi_mac_addr target_mac;

drivers/net/wireless/ath/ath10k/wow.c

+118 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include "mac.h"



#include <net/mac80211.h>

#include <net/addrconf.h>

#include "hif.h"

#include "core.h"

#include "debug.h"
@@ -231,6 +232,116 @@ static int ath10k_wow_wakeup(struct ath10k *ar) 
	return 0;

}



static int

ath10k_wow_fill_vdev_ns_offload_struct(struct ath10k_vif *arvif,

				       bool enable_offload)

{

	struct in6_addr addr[TARGET_NUM_STATIONS];

	struct wmi_ns_arp_offload_req *ns;

	struct wireless_dev *wdev;

	struct inet6_dev *in6_dev;

	struct in6_addr addr_type;

	struct inet6_ifaddr *ifa;

	struct ifacaddr6 *ifaca;

	struct list_head *addr_list;

	u32 scope, count = 0;

	int i;



	ns = &arvif->ns_offload;

	if (!enable_offload) {

		ns->offload_type = __cpu_to_le16(WMI_NS_ARP_OFFLOAD);

		ns->enable_offload = __cpu_to_le16(WMI_ARP_NS_OFFLOAD_DISABLE);

		return 0;

	}



	wdev = ieee80211_vif_to_wdev(arvif->vif);

	if (!wdev)

		return -ENODEV;



	in6_dev = __in6_dev_get(wdev->netdev);

	if (!in6_dev)

		return -ENODEV;



	memset(&addr, 0, TARGET_NUM_STATIONS * sizeof(struct in6_addr));

	memset(&addr_type, 0, sizeof(struct in6_addr));



	/* Unicast Addresses */

	read_lock_bh(&in6_dev->lock);

	list_for_each(addr_list, &in6_dev->addr_list) {

		if (count >= TARGET_NUM_STATIONS) {

			read_unlock_bh(&in6_dev->lock);

			return -EINVAL;

		}



		ifa = list_entry(addr_list, struct inet6_ifaddr, if_list);

		if (ifa->flags & IFA_F_DADFAILED)

			continue;

		scope = ipv6_addr_src_scope(&ifa->addr);

		switch (scope) {

		case IPV6_ADDR_SCOPE_GLOBAL:

		case IPV6_ADDR_SCOPE_LINKLOCAL:

			memcpy(&addr[count], &ifa->addr.s6_addr,

			       sizeof(ifa->addr.s6_addr));

			addr_type.s6_addr[count] = IPV6_ADDR_UNICAST;

			count += 1;

			break;

		}

	}



	/* Anycast Addresses */

	for (ifaca = in6_dev->ac_list; ifaca; ifaca = ifaca->aca_next) {

		if (count >= TARGET_NUM_STATIONS) {

			read_unlock_bh(&in6_dev->lock);

			return -EINVAL;

		}



		scope = ipv6_addr_src_scope(&ifaca->aca_addr);

		switch (scope) {

		case IPV6_ADDR_SCOPE_GLOBAL:

		case IPV6_ADDR_SCOPE_LINKLOCAL:

			memcpy(&addr[count], &ifaca->aca_addr,

			       sizeof(ifaca->aca_addr));

			addr_type.s6_addr[count] = IPV6_ADDR_ANY;

			count += 1;

			break;

		}

	}

	read_unlock_bh(&in6_dev->lock);



	/* Filling up the request structure

	 * Filling the self_addr with solicited address

	 * A Solicited-Node multicast address is created by

	 * taking the last 24 bits of a unicast or anycast

	 * address and appending them to the prefix

	 *

	 * FF02:0000:0000:0000:0000:0001:FFXX:XXXX

	 *

	 * here XX is the unicast/anycast bits

	 */

	for (i = 0; i < count; i++) {

		ns->info.self_addr[i].s6_addr[0] = 0xFF;

		ns->info.self_addr[i].s6_addr[1] = 0x02;

		ns->info.self_addr[i].s6_addr[11] = 0x01;

		ns->info.self_addr[i].s6_addr[12] = 0xFF;

		ns->info.self_addr[i].s6_addr[13] = addr[i].s6_addr[13];

		ns->info.self_addr[i].s6_addr[14] = addr[i].s6_addr[14];

		ns->info.self_addr[i].s6_addr[15] = addr[i].s6_addr[15];

		ns->info.slot_idx = i;

		memcpy(&ns->info.target_addr[i], &addr[i],

		       sizeof(struct in6_addr));

		ns->info.target_addr_valid.s6_addr[i] = 1;

		ns->info.target_ipv6_ac.s6_addr[i] = addr_type.s6_addr[i];

		memcpy(&ns->params.ipv6_addr, &ns->info.target_addr[i],

		       sizeof(struct in6_addr));

	}



	ns->offload_type = __cpu_to_le16(WMI_NS_ARP_OFFLOAD);

	ns->enable_offload = __cpu_to_le16(WMI_ARP_NS_OFFLOAD_ENABLE);

	ns->num_ns_offload_count = __cpu_to_le16(count);



	return 0;

}



static int

ath10k_wow_fill_vdev_arp_offload_struct(struct ath10k_vif *arvif,

					bool enable_offload)
@@ -291,6 +402,13 @@ static int ath10k_wow_enable_ns_arp_offload(struct ath10k *ar, bool offload) 
			return ret;

		}



		ret = ath10k_wow_fill_vdev_ns_offload_struct(arvif, offload);

		if (ret) {

			ath10k_err(ar, "NS-offload config failed, vdev: %d\n",

				   arvif->vdev_id);

			return ret;

		}



		ret = ath10k_wmi_set_arp_ns_offload(ar, arvif);

		if (ret) {

			ath10k_err(ar, "failed to send offload cmd, vdev: %d\n",