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lede/package/kernel/mac80211/patches/ath11k/0197-ath11k-support-ARP-and-NS-offload.patch
coolsnowwolf 6710357cce mac80211: revert to linux 5.15
2022-12-20 14:57:32 +08:00

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From c3c36bfe998b3ad14aa87a57037a05d861889ac8 Mon Sep 17 00:00:00 2001
From: Carl Huang <quic_cjhuang@quicinc.com>
Date: Mon, 14 Mar 2022 07:18:16 +0200
Subject: [PATCH] ath11k: support ARP and NS offload
Support ARP and NS offload in WoW state.
Tested this way: put machine A with QCA6390 to WoW state,
ping/ping6 machine A from another machine B, check sniffer to see
any ARP response and Neighbour advertisement from machine A.
Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1
Signed-off-by: Carl Huang <quic_cjhuang@quicinc.com>
Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/1644308006-22784-6-git-send-email-quic_cjhuang@quicinc.com
---
drivers/net/wireless/ath/ath11k/core.h | 19 +++
drivers/net/wireless/ath/ath11k/mac.c | 118 +++++++++++++++++++
drivers/net/wireless/ath/ath11k/wmi.c | 155 +++++++++++++++++++++++++
drivers/net/wireless/ath/ath11k/wmi.h | 47 ++++++++
drivers/net/wireless/ath/ath11k/wow.c | 52 +++++++++
5 files changed, 391 insertions(+)
--- a/drivers/net/wireless/ath/ath11k/core.h
+++ b/drivers/net/wireless/ath/ath11k/core.h
@@ -213,6 +213,23 @@ enum ath11k_monitor_flags {
ATH11K_FLAG_MONITOR_VDEV_CREATED,
};
+#define ATH11K_IPV6_UC_TYPE 0
+#define ATH11K_IPV6_AC_TYPE 1
+
+#define ATH11K_IPV6_MAX_COUNT 16
+#define ATH11K_IPV4_MAX_COUNT 2
+
+struct ath11k_arp_ns_offload {
+ u8 ipv4_addr[ATH11K_IPV4_MAX_COUNT][4];
+ u32 ipv4_count;
+ u32 ipv6_count;
+ u8 ipv6_addr[ATH11K_IPV6_MAX_COUNT][16];
+ u8 self_ipv6_addr[ATH11K_IPV6_MAX_COUNT][16];
+ u8 ipv6_type[ATH11K_IPV6_MAX_COUNT];
+ bool ipv6_valid[ATH11K_IPV6_MAX_COUNT];
+ u8 mac_addr[ETH_ALEN];
+};
+
struct ath11k_vif {
u32 vdev_id;
enum wmi_vdev_type vdev_type;
@@ -264,6 +281,8 @@ struct ath11k_vif {
bool bcca_zero_sent;
bool do_not_send_tmpl;
struct ieee80211_chanctx_conf chanctx;
+ struct ath11k_arp_ns_offload arp_ns_offload;
+
#ifdef CPTCFG_ATH11K_DEBUGFS
struct dentry *debugfs_twt;
#endif /* CPTCFG_ATH11K_DEBUGFS */
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -6,6 +6,11 @@
#include <net/mac80211.h>
#include <linux/etherdevice.h>
+#include <linux/bitfield.h>
+#include <linux/inetdevice.h>
+#include <net/if_inet6.h>
+#include <net/ipv6.h>
+
#include "mac.h"
#include "core.h"
#include "debug.h"
@@ -3095,6 +3100,7 @@ static void ath11k_mac_op_bss_info_chang
int ret = 0;
u8 rateidx;
u32 rate;
+ u32 ipv4_cnt;
mutex_lock(&ar->conf_mutex);
@@ -3387,6 +3393,18 @@ static void ath11k_mac_op_bss_info_chang
changed & BSS_CHANGED_UNSOL_BCAST_PROBE_RESP)
ath11k_mac_fils_discovery(arvif, info);
+ if (changed & BSS_CHANGED_ARP_FILTER) {
+ ipv4_cnt = min(info->arp_addr_cnt, ATH11K_IPV4_MAX_COUNT);
+ memcpy(arvif->arp_ns_offload.ipv4_addr, info->arp_addr_list,
+ ipv4_cnt * sizeof(u32));
+ memcpy(arvif->arp_ns_offload.mac_addr, vif->addr, ETH_ALEN);
+ arvif->arp_ns_offload.ipv4_count = ipv4_cnt;
+
+ ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac arp_addr_cnt %d vif->addr %pM, offload_addr %pI4\n",
+ info->arp_addr_cnt,
+ vif->addr, arvif->arp_ns_offload.ipv4_addr);
+ }
+
mutex_unlock(&ar->conf_mutex);
}
@@ -8087,6 +8105,101 @@ static void ath11k_mac_op_sta_statistics
}
}
+static void ath11k_generate_ns_mc_addr(struct ath11k *ar,
+ struct ath11k_arp_ns_offload *offload)
+{
+ int i;
+
+ for (i = 0; i < offload->ipv6_count; i++) {
+ offload->self_ipv6_addr[i][0] = 0xff;
+ offload->self_ipv6_addr[i][1] = 0x02;
+ offload->self_ipv6_addr[i][11] = 0x01;
+ offload->self_ipv6_addr[i][12] = 0xff;
+ offload->self_ipv6_addr[i][13] =
+ offload->ipv6_addr[i][13];
+ offload->self_ipv6_addr[i][14] =
+ offload->ipv6_addr[i][14];
+ offload->self_ipv6_addr[i][15] =
+ offload->ipv6_addr[i][15];
+ ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "NS solicited addr %pI6\n",
+ offload->self_ipv6_addr[i]);
+ }
+}
+
+static void ath11k_mac_op_ipv6_changed(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct inet6_dev *idev)
+{
+ struct ath11k *ar = hw->priv;
+ struct ath11k_arp_ns_offload *offload;
+ struct ath11k_vif *arvif = ath11k_vif_to_arvif(vif);
+ struct inet6_ifaddr *ifa6;
+ struct ifacaddr6 *ifaca6;
+ struct list_head *p;
+ u32 count, scope;
+
+ ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac op ipv6 changed\n");
+
+ offload = &arvif->arp_ns_offload;
+ count = 0;
+
+ read_lock_bh(&idev->lock);
+
+ memset(offload->ipv6_addr, 0, sizeof(offload->ipv6_addr));
+ memset(offload->self_ipv6_addr, 0, sizeof(offload->self_ipv6_addr));
+ memcpy(offload->mac_addr, vif->addr, ETH_ALEN);
+
+ /* get unicast address */
+ list_for_each(p, &idev->addr_list) {
+ if (count >= ATH11K_IPV6_MAX_COUNT)
+ goto generate;
+
+ ifa6 = list_entry(p, struct inet6_ifaddr, if_list);
+ if (ifa6->flags & IFA_F_DADFAILED)
+ continue;
+ scope = ipv6_addr_src_scope(&ifa6->addr);
+ if (scope == IPV6_ADDR_SCOPE_LINKLOCAL ||
+ scope == IPV6_ADDR_SCOPE_GLOBAL) {
+ memcpy(offload->ipv6_addr[count], &ifa6->addr.s6_addr,
+ sizeof(ifa6->addr.s6_addr));
+ offload->ipv6_type[count] = ATH11K_IPV6_UC_TYPE;
+ ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac count %d ipv6 uc %pI6 scope %d\n",
+ count, offload->ipv6_addr[count],
+ scope);
+ count++;
+ } else {
+ ath11k_warn(ar->ab, "Unsupported ipv6 scope: %d\n", scope);
+ }
+ }
+
+ /* get anycast address */
+ for (ifaca6 = idev->ac_list; ifaca6; ifaca6 = ifaca6->aca_next) {
+ if (count >= ATH11K_IPV6_MAX_COUNT)
+ goto generate;
+
+ scope = ipv6_addr_src_scope(&ifaca6->aca_addr);
+ if (scope == IPV6_ADDR_SCOPE_LINKLOCAL ||
+ scope == IPV6_ADDR_SCOPE_GLOBAL) {
+ memcpy(offload->ipv6_addr[count], &ifaca6->aca_addr,
+ sizeof(ifaca6->aca_addr));
+ offload->ipv6_type[count] = ATH11K_IPV6_AC_TYPE;
+ ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac count %d ipv6 ac %pI6 scope %d\n",
+ count, offload->ipv6_addr[count],
+ scope);
+ count++;
+ } else {
+ ath11k_warn(ar->ab, "Unsupported ipv scope: %d\n", scope);
+ }
+ }
+
+generate:
+ offload->ipv6_count = count;
+ read_unlock_bh(&idev->lock);
+
+ /* generate ns multicast address */
+ ath11k_generate_ns_mc_addr(ar, offload);
+}
+
static const struct ieee80211_ops ath11k_ops = {
.tx = ath11k_mac_op_tx,
.start = ath11k_mac_op_start,
@@ -8132,6 +8245,11 @@ static const struct ieee80211_ops ath11k
#ifdef CPTCFG_ATH11K_DEBUGFS
.sta_add_debugfs = ath11k_debugfs_sta_op_add,
#endif
+
+#if IS_ENABLED(CONFIG_IPV6)
+ .ipv6_addr_change = ath11k_mac_op_ipv6_changed,
+#endif
+
};
static void ath11k_mac_update_ch_list(struct ath11k *ar,
--- a/drivers/net/wireless/ath/ath11k/wmi.c
+++ b/drivers/net/wireless/ath/ath11k/wmi.c
@@ -8580,3 +8580,158 @@ int ath11k_wmi_wow_config_pno(struct ath
return ath11k_wmi_cmd_send(ar->wmi, skb, WMI_NETWORK_LIST_OFFLOAD_CONFIG_CMDID);
}
+static void ath11k_wmi_fill_ns_offload(struct ath11k *ar,
+ struct ath11k_arp_ns_offload *offload,
+ u8 **ptr,
+ bool enable,
+ bool ext)
+{
+ struct wmi_ns_offload_tuple *ns;
+ struct wmi_tlv *tlv;
+ u8 *buf_ptr = *ptr;
+ u32 ns_cnt, ns_ext_tuples;
+ int i, max_offloads;
+
+ ns_cnt = offload->ipv6_count;
+
+ tlv = (struct wmi_tlv *)buf_ptr;
+
+ if (ext) {
+ ns_ext_tuples = offload->ipv6_count - WMI_MAX_NS_OFFLOADS;
+ tlv->header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_ARRAY_STRUCT) |
+ FIELD_PREP(WMI_TLV_LEN, ns_ext_tuples * sizeof(*ns));
+ i = WMI_MAX_NS_OFFLOADS;
+ max_offloads = offload->ipv6_count;
+ } else {
+ tlv->header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_ARRAY_STRUCT) |
+ FIELD_PREP(WMI_TLV_LEN, WMI_MAX_NS_OFFLOADS * sizeof(*ns));
+ i = 0;
+ max_offloads = WMI_MAX_NS_OFFLOADS;
+ }
+
+ buf_ptr += sizeof(*tlv);
+
+ for (; i < max_offloads; i++) {
+ ns = (struct wmi_ns_offload_tuple *)buf_ptr;
+ ns->tlv_header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_NS_OFFLOAD_TUPLE) |
+ FIELD_PREP(WMI_TLV_LEN, sizeof(*ns) - TLV_HDR_SIZE);
+
+ if (enable) {
+ if (i < ns_cnt)
+ ns->flags |= WMI_NSOL_FLAGS_VALID;
+
+ memcpy(ns->target_ipaddr[0], offload->ipv6_addr[i], 16);
+ memcpy(ns->solicitation_ipaddr, offload->self_ipv6_addr[i], 16);
+ ath11k_ce_byte_swap(ns->target_ipaddr[0], 16);
+ ath11k_ce_byte_swap(ns->solicitation_ipaddr, 16);
+
+ if (offload->ipv6_type[i])
+ ns->flags |= WMI_NSOL_FLAGS_IS_IPV6_ANYCAST;
+
+ memcpy(ns->target_mac.addr, offload->mac_addr, ETH_ALEN);
+ ath11k_ce_byte_swap(ns->target_mac.addr, 8);
+
+ if (ns->target_mac.word0 != 0 ||
+ ns->target_mac.word1 != 0) {
+ ns->flags |= WMI_NSOL_FLAGS_MAC_VALID;
+ }
+
+ ath11k_dbg(ar->ab, ATH11K_DBG_WMI,
+ "wmi index %d ns_solicited %pI6 target %pI6",
+ i, ns->solicitation_ipaddr,
+ ns->target_ipaddr[0]);
+ }
+
+ buf_ptr += sizeof(*ns);
+ }
+
+ *ptr = buf_ptr;
+}
+
+static void ath11k_wmi_fill_arp_offload(struct ath11k *ar,
+ struct ath11k_arp_ns_offload *offload,
+ u8 **ptr,
+ bool enable)
+{
+ struct wmi_arp_offload_tuple *arp;
+ struct wmi_tlv *tlv;
+ u8 *buf_ptr = *ptr;
+ int i;
+
+ /* fill arp tuple */
+ tlv = (struct wmi_tlv *)buf_ptr;
+ tlv->header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_ARRAY_STRUCT) |
+ FIELD_PREP(WMI_TLV_LEN, WMI_MAX_ARP_OFFLOADS * sizeof(*arp));
+ buf_ptr += sizeof(*tlv);
+
+ for (i = 0; i < WMI_MAX_ARP_OFFLOADS; i++) {
+ arp = (struct wmi_arp_offload_tuple *)buf_ptr;
+ arp->tlv_header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_ARP_OFFLOAD_TUPLE) |
+ FIELD_PREP(WMI_TLV_LEN, sizeof(*arp) - TLV_HDR_SIZE);
+
+ if (enable && i < offload->ipv4_count) {
+ /* Copy the target ip addr and flags */
+ arp->flags = WMI_ARPOL_FLAGS_VALID;
+ memcpy(arp->target_ipaddr, offload->ipv4_addr[i], 4);
+ ath11k_ce_byte_swap(arp->target_ipaddr, 4);
+
+ ath11k_dbg(ar->ab, ATH11K_DBG_WMI, "wmi arp offload address %pI4",
+ arp->target_ipaddr);
+ }
+
+ buf_ptr += sizeof(*arp);
+ }
+
+ *ptr = buf_ptr;
+}
+
+int ath11k_wmi_arp_ns_offload(struct ath11k *ar,
+ struct ath11k_vif *arvif, bool enable)
+{
+ struct ath11k_arp_ns_offload *offload;
+ struct wmi_set_arp_ns_offload_cmd *cmd;
+ struct wmi_tlv *tlv;
+ struct sk_buff *skb;
+ u8 *buf_ptr;
+ size_t len;
+ u8 ns_cnt, ns_ext_tuples = 0;
+
+ offload = &arvif->arp_ns_offload;
+ ns_cnt = offload->ipv6_count;
+
+ len = sizeof(*cmd) +
+ sizeof(*tlv) +
+ WMI_MAX_NS_OFFLOADS * sizeof(struct wmi_ns_offload_tuple) +
+ sizeof(*tlv) +
+ WMI_MAX_ARP_OFFLOADS * sizeof(struct wmi_arp_offload_tuple);
+
+ if (ns_cnt > WMI_MAX_NS_OFFLOADS) {
+ ns_ext_tuples = ns_cnt - WMI_MAX_NS_OFFLOADS;
+ len += sizeof(*tlv) +
+ ns_ext_tuples * sizeof(struct wmi_ns_offload_tuple);
+ }
+
+ skb = ath11k_wmi_alloc_skb(ar->wmi->wmi_ab, len);
+ if (!skb)
+ return -ENOMEM;
+
+ buf_ptr = skb->data;
+ cmd = (struct wmi_set_arp_ns_offload_cmd *)buf_ptr;
+ cmd->tlv_header = FIELD_PREP(WMI_TLV_TAG,
+ WMI_TAG_SET_ARP_NS_OFFLOAD_CMD) |
+ FIELD_PREP(WMI_TLV_LEN, sizeof(*cmd) - TLV_HDR_SIZE);
+
+ cmd->flags = 0;
+ cmd->vdev_id = arvif->vdev_id;
+ cmd->num_ns_ext_tuples = ns_ext_tuples;
+
+ buf_ptr += sizeof(*cmd);
+
+ ath11k_wmi_fill_ns_offload(ar, offload, &buf_ptr, enable, 0);
+ ath11k_wmi_fill_arp_offload(ar, offload, &buf_ptr, enable);
+
+ if (ns_ext_tuples)
+ ath11k_wmi_fill_ns_offload(ar, offload, &buf_ptr, enable, 1);
+
+ return ath11k_wmi_cmd_send(ar->wmi, skb, WMI_SET_ARP_NS_OFFLOAD_CMDID);
+}
--- a/drivers/net/wireless/ath/ath11k/wmi.h
+++ b/drivers/net/wireless/ath/ath11k/wmi.h
@@ -13,6 +13,7 @@ struct ath11k_base;
struct ath11k;
struct ath11k_fw_stats;
struct ath11k_fw_dbglog;
+struct ath11k_vif;
#define PSOC_HOST_MAX_NUM_SS (8)
@@ -5796,6 +5797,49 @@ struct wmi_wow_nlo_config_cmd {
*/
} __packed;
+#define WMI_MAX_NS_OFFLOADS 2
+#define WMI_MAX_ARP_OFFLOADS 2
+
+#define WMI_ARPOL_FLAGS_VALID BIT(0)
+#define WMI_ARPOL_FLAGS_MAC_VALID BIT(1)
+#define WMI_ARPOL_FLAGS_REMOTE_IP_VALID BIT(2)
+
+struct wmi_arp_offload_tuple {
+ u32 tlv_header;
+ u32 flags;
+ u8 target_ipaddr[4];
+ u8 remote_ipaddr[4];
+ struct wmi_mac_addr target_mac;
+} __packed;
+
+#define WMI_NSOL_FLAGS_VALID BIT(0)
+#define WMI_NSOL_FLAGS_MAC_VALID BIT(1)
+#define WMI_NSOL_FLAGS_REMOTE_IP_VALID BIT(2)
+#define WMI_NSOL_FLAGS_IS_IPV6_ANYCAST BIT(3)
+
+#define WMI_NSOL_MAX_TARGET_IPS 2
+
+struct wmi_ns_offload_tuple {
+ u32 tlv_header;
+ u32 flags;
+ u8 target_ipaddr[WMI_NSOL_MAX_TARGET_IPS][16];
+ u8 solicitation_ipaddr[16];
+ u8 remote_ipaddr[16];
+ struct wmi_mac_addr target_mac;
+} __packed;
+
+struct wmi_set_arp_ns_offload_cmd {
+ u32 tlv_header;
+ u32 flags;
+ u32 vdev_id;
+ u32 num_ns_ext_tuples;
+ /* The TLVs follow:
+ * wmi_ns_offload_tuple ns_tuples[WMI_MAX_NS_OFFLOADS];
+ * wmi_arp_offload_tuple arp_tuples[WMI_MAX_ARP_OFFLOADS];
+ * wmi_ns_offload_tuple ns_ext_tuples[num_ns_ext_tuples];
+ */
+} __packed;
+
int ath11k_wmi_cmd_send(struct ath11k_pdev_wmi *wmi, struct sk_buff *skb,
u32 cmd_id);
struct sk_buff *ath11k_wmi_alloc_skb(struct ath11k_wmi_base *wmi_sc, u32 len);
@@ -5968,4 +6012,7 @@ int ath11k_wmi_wow_add_wakeup_event(stru
u32 enable);
int ath11k_wmi_hw_data_filter_cmd(struct ath11k *ar, u32 vdev_id,
u32 filter_bitmap, bool enable);
+int ath11k_wmi_arp_ns_offload(struct ath11k *ar,
+ struct ath11k_vif *arvif, bool enable);
+
#endif
--- a/drivers/net/wireless/ath/ath11k/wow.c
+++ b/drivers/net/wireless/ath/ath11k/wow.c
@@ -559,6 +559,43 @@ static int ath11k_wow_clear_hw_filter(st
return 0;
}
+static int ath11k_wow_arp_ns_offload(struct ath11k *ar, bool enable)
+{
+ struct ath11k_vif *arvif;
+ int ret;
+
+ lockdep_assert_held(&ar->conf_mutex);
+
+ list_for_each_entry(arvif, &ar->arvifs, list) {
+ if (arvif->vdev_type != WMI_VDEV_TYPE_STA)
+ continue;
+
+ ret = ath11k_wmi_arp_ns_offload(ar, arvif, enable);
+
+ if (ret) {
+ ath11k_warn(ar->ab, "failed to set arp ns offload vdev %i: enable %d, ret %d\n",
+ arvif->vdev_id, enable, ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int ath11k_wow_protocol_offload(struct ath11k *ar, bool enable)
+{
+ int ret;
+
+ ret = ath11k_wow_arp_ns_offload(ar, enable);
+ if (ret) {
+ ath11k_warn(ar->ab, "failed to offload ARP and NS %d %d\n",
+ enable, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
int ath11k_wow_op_suspend(struct ieee80211_hw *hw,
struct cfg80211_wowlan *wowlan)
{
@@ -589,6 +626,14 @@ int ath11k_wow_op_suspend(struct ieee802
goto cleanup;
}
+ ret = ath11k_wow_protocol_offload(ar, true);
+ if (ret) {
+ ath11k_warn(ar->ab, "failed to set wow protocol offload events: %d\n",
+ ret);
+ goto cleanup;
+ }
+
+ ath11k_mac_drain_tx(ar);
ret = ath11k_mac_wait_tx_complete(ar);
if (ret) {
ath11k_warn(ar->ab, "failed to wait tx complete: %d\n", ret);
@@ -690,6 +735,13 @@ int ath11k_wow_op_resume(struct ieee8021
goto exit;
}
+ ret = ath11k_wow_protocol_offload(ar, false);
+ if (ret) {
+ ath11k_warn(ar->ab, "failed to clear wow protocol offload events: %d\n",
+ ret);
+ goto exit;
+ }
+
exit:
if (ret) {
switch (ar->state) {
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