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mac80211: add tasklet_kill step during NSS interface take down

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This commit is contained in:
coolsnowwolf 2021-07-08 12:57:11 +08:00
parent 800501b488
commit 4790aa244b
1 changed files with 110 additions and 83 deletions
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193
package/kernel/mac80211/patches/subsys/999-mac80211-add-option-for-NSS-support.patch
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@ -37,12 +37,16 @@
struct ieee80211_local;
/* Maximum number of broadcast/multicast frames to buffer when some of the
@@ -988,6 +992,10 @@ struct ieee80211_sub_if_data {
@@ -988,6 +992,14 @@ struct ieee80211_sub_if_data {
bool hw_80211_encap;
+#ifdef CPTCFG_MAC80211_NSS_SUPPORT
+ struct nss_virt_if_handle *nssctx;
+
+ struct tasklet_struct ieee80211_nss_rq_tasklet;
+ struct sk_buff_head rq_for_nss;
+ int nss_rq_tasklet_pending;
+#endif
+
/* must be last, dynamically sized area in this! */
@ -71,58 +75,11 @@
/**
* DOC: Interface list locking
*
@@ -645,6 +652,13 @@
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+#ifdef CPTCFG_MAC80211_NSS_SUPPORT
+ if (sdata->nssctx) {
+ nss_virt_if_destroy_sync(sdata->nssctx);
+ sdata_info(sdata, "Destroyed NSS virtual interface\n");
+ }
+#endif
+
ieee80211_do_stop(sdata, true);
return 0;
@@ -1343,6 +1357,18 @@
ieee80211_recalc_ps(local);
+#ifdef CPTCFG_MAC80211_NSS_SUPPORT
+ if (is_nss_enable) {
+ sdata->nssctx = nss_virt_if_create_sync(dev);
+ if (sdata->nssctx)
+ sdata_info(sdata, "Created a NSS virtual interface\n");
+ else
+ sdata_err(sdata, "Failed to create a NSS virtual interface\n");
+ } else {
+ sdata->nssctx = NULL;
+ }
+#endif
+
if (sdata->vif.type == NL80211_IFTYPE_MONITOR ||
sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
local->ops->wake_tx_queue) {
--- a/net/mac80211/rx.c 2019-01-03 21:09:29.503001000 +0800
+++ b/net/mac80211/rx.c 2019-01-03 21:17:42.463001000 +0800
@@ -32,6 +32,10 @@
#include "wme.h"
#include "rate.h"
+#ifdef CPTCFG_MAC80211_NSS_SUPPORT
+extern bool is_nss_enable;
+#endif
+
static inline void ieee80211_rx_stats(struct net_device *dev, u32 len)
{
struct pcpu_sw_netstats *tstats = this_cpu_ptr(netdev_tstats(dev));
@@ -42,6 +46,63 @@
u64_stats_update_end(&tstats->syncp);
@@ -695,6 +702,96 @@
ieee80211_teardown_sdata(IEEE80211_DEV_TO_SUB_IF(dev));
}
+#ifdef CPTCFG_MAC80211_NSS_SUPPORT
+
+#define case_rtn_string(val) case val: return #val
+
+static const char *nss_tx_status_str(nss_tx_status_t status)
@ -145,52 +102,117 @@
+ }
+}
+
+static void netif_rx_nss(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb)
+static void ieee80211_nss_rq_tasklet(unsigned long _txp)
+{
+ struct ieee80211_sub_if_data *sdata = (struct ieee80211_sub_if_data *)_txp;
+ struct sk_buff *skb;
+ int ret;
+ int push_mac_header = 0;
+
+ if (!sdata->nssctx)
+ goto out;
+
+ if (unlikely((skb->data - skb_mac_header(skb)) == ETH_HLEN)) {
+ while ((skb = __skb_dequeue(&sdata->rq_for_nss)) != NULL) {
+ skb_push(skb, ETH_HLEN);
+ push_mac_header = 1;
+ }
+
+ ret = nss_virt_if_tx_buf(sdata->nssctx, skb);
+ if (ret) {
+ if (net_ratelimit()) {
+ ret = nss_virt_if_tx_buf(sdata->nssctx, skb);
+ if (unlikely(ret)) {
+ sdata_err(sdata, "NSS TX failed with error[%d]: %s\n", ret,
+ nss_tx_status_str(ret));
+
+ skb_pull(skb, ETH_HLEN);
+ netif_receive_skb(skb);
+ }
+ goto out;
+ }
+
+ return;
+out:
+ if (unlikely(push_mac_header)) {
+ skb_pull(skb, ETH_HLEN);
+ skb = skb_peek(&sdata->rq_for_nss);
+ if (!skb) {
+ sdata->nss_rq_tasklet_pending = 0;
+ }
+ else {
+ sdata->nss_rq_tasklet_pending = 1;
+ tasklet_schedule(&sdata->ieee80211_nss_rq_tasklet);
+ }
+}
+
+static int ieee80211_init_nss(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ sdata->nssctx = nss_virt_if_create_sync(dev);
+ if (sdata->nssctx) {
+ sdata_info(sdata, "Created a NSS virtual interface.\n");
+
+ __skb_queue_head_init(&sdata->rq_for_nss);
+ tasklet_init(&sdata->ieee80211_nss_rq_tasklet, ieee80211_nss_rq_tasklet,
+ (unsigned long)sdata);
+ sdata_info(sdata, "RX-Q and tasklet initialized.\n");
+ }
+ else {
+ sdata->nssctx = NULL;
+ sdata_err(sdata, "Failed to create a NSS virtual interface\n");
+ }
+
+ return 0;
+}
+
+static void ieee80211_uninit_nss(struct net_device *dev)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+ ieee80211_uninit(dev);
+
+ if (sdata->nssctx) {
+ nss_virt_if_destroy_sync(sdata->nssctx);
+ sdata_info(sdata, "Destroyed NSS virtual interface\n");
+
+ tasklet_kill(&sdata->ieee80211_nss_rq_tasklet);
+ __skb_queue_purge(&sdata->rq_for_nss);
+ sdata_info(sdata, "RX-Q purged.\n");
+ }
+ netif_receive_skb(skb);
+}
+#endif
+
#if LINUX_VERSION_IS_GEQ(5,2,0)
static u16 ieee80211_netdev_select_queue(struct net_device *dev,
struct sk_buff *skb,
@@ -742,7 +839,12 @@
static const struct net_device_ops ieee80211_dataif_ops = {
.ndo_open = ieee80211_open,
.ndo_stop = ieee80211_stop,
+#ifdef CPTCFG_MAC80211_NSS_SUPPORT
+ .ndo_init = ieee80211_init_nss,
+ .ndo_uninit = ieee80211_uninit_nss,
+#else
.ndo_uninit = ieee80211_uninit,
+#endif
.ndo_start_xmit = ieee80211_subif_start_xmit,
.ndo_set_rx_mode = ieee80211_set_multicast_list,
.ndo_set_mac_address = ieee80211_change_mac,
--- a/net/mac80211/rx.c 2019-01-03 21:09:29.503001000 +0800
+++ b/net/mac80211/rx.c 2019-01-03 21:17:42.463001000 +0800
@@ -32,6 +32,10 @@
#include "wme.h"
#include "rate.h"
+#ifdef CPTCFG_MAC80211_NSS_SUPPORT
+extern bool is_nss_enable;
+#endif
+
/*
* monitor mode reception
*
@@ -2604,6 +2665,16 @@
static inline void ieee80211_rx_stats(struct net_device *dev, u32 len)
{
struct pcpu_sw_netstats *tstats = this_cpu_ptr(netdev_tstats(dev));
@@ -2604,6 +2608,21 @@
ether_addr_copy(ehdr->h_dest, sdata->vif.addr);
/* deliver to local stack */
+#ifdef CPTCFG_MAC80211_NSS_SUPPORT
+ if (likely(is_nss_enable))
+ netif_rx_nss(sdata, skb);
+ if (likely(is_nss_enable && sdata->nssctx)) {
+ __skb_queue_tail(&sdata->rq_for_nss, skb);
+ if(!sdata->nss_rq_tasklet_pending) {
+ sdata->nss_rq_tasklet_pending = 1;
+ tasklet_schedule(&sdata->ieee80211_nss_rq_tasklet);
+ }
+ }
+ else {
+ if (rx->napi)
+ napi_gro_receive(rx->napi, skb);
+ if (rx->list)
+ list_add_tail(&skb->list, rx->list);
+ else
+ netif_receive_skb(skb);
+ }
@ -198,7 +220,7 @@
if (rx->list)
#if LINUX_VERSION_IS_GEQ(4,19,0)
list_add_tail(&skb->list, rx->list);
@@ -2612,6 +2683,7 @@
@@ -2612,6 +2631,7 @@
#endif
else
netif_receive_skb(skb);
@ -206,16 +228,21 @@
}
}
@@ -4461,6 +4533,16 @@
@@ -4461,6 +4481,21 @@
/* deliver to local stack */
skb->protocol = eth_type_trans(skb, fast_rx->dev);
memset(skb->cb, 0, sizeof(skb->cb));
+#ifdef CPTCFG_MAC80211_NSS_SUPPORT
+ if (likely(is_nss_enable))
+ netif_rx_nss(rx->sdata, skb);
+ if (likely(is_nss_enable && rx->sdata->nssctx)) {
+ __skb_queue_tail(&rx->sdata->rq_for_nss, skb);
+ if(!rx->sdata->nss_rq_tasklet_pending) {
+ rx->sdata->nss_rq_tasklet_pending = 1;
+ tasklet_schedule(&rx->sdata->ieee80211_nss_rq_tasklet);
+ }
+ }
+ else {
+ if (rx->napi)
+ napi_gro_receive(rx->napi, skb);
+ if (rx->list)
+ list_add_tail(&skb->list, rx->list);
+ else
+ netif_receive_skb(skb);
+ }
@ -223,7 +250,7 @@
if (rx->list)
#if LINUX_VERSION_IS_GEQ(4,19,0)
list_add_tail(&skb->list, rx->list);
@@ -4469,7 +4551,7 @@
@@ -4469,7 +4504,7 @@
#endif
else
netif_receive_skb(skb);