Initial commit

package/qca/qca-nss-ecm/patches/403-Access-global-accelerated-count-under-lock.patch

@@ -0,0 +1,59 @@
+From 65a49ebd1bd12b9952dfa214de0a2da43ba2abed Mon Sep 17 00:00:00 2001
+From: Bhaskar Valaboju <bhaskarv@codeaurora.org>
+Date: Tue, 13 Aug 2019 14:21:03 +0530
+Subject: [qca-nss-ecm]: Access global ipv4/ipv6 accelerated count under lock
+
+Flow accelerated count maintained as global variables are accessed
+in multiple kernel contexts.  These counters are updated under lock,
+but read without lock.  Read is in kernel thread context (workqueue)
+and sometimes it is taking stale entry (0) and doesn't change.
+Lock is added to read correct value.
+
+Change-Id: I74cf27fe5097c6ae7dfcc06319762a8a322d79a3
+Signed-off-by: Bhaskar Valaboju <bhaskarv@codeaurora.org>
+---
+ frontends/nss/ecm_nss_ipv4.c | 3 +++
+ frontends/nss/ecm_nss_ipv6.c | 3 +++
+ 2 files changed, 6 insertions(+)
+
+(limited to 'frontends')
+
+diff --git a/frontends/nss/ecm_nss_ipv4.c b/frontends/nss/ecm_nss_ipv4.c
+index afd660e..4e66cdf 100644
+--- a/frontends/nss/ecm_nss_ipv4.c
++++ b/frontends/nss/ecm_nss_ipv4.c
+@@ -2288,10 +2288,13 @@ static void ecm_nss_ipv4_stats_sync_req_work(struct work_struct *work)
+ 	int retry = 3;
+ 	unsigned long int current_jiffies;
+ 
++	spin_lock_bh(&ecm_nss_ipv4_lock);
+ 	if (ecm_nss_ipv4_accelerated_count == 0) {
++		spin_unlock_bh(&ecm_nss_ipv4_lock);
+ 		DEBUG_TRACE("There is no accelerated IPv4 connection\n");
+ 		goto reschedule;
+ 	}
++	spin_unlock_bh(&ecm_nss_ipv4_lock);
+ 
+ 	usleep_range(ECM_NSS_IPV4_STATS_SYNC_UDELAY - 100, ECM_NSS_IPV4_STATS_SYNC_UDELAY);
+ 
+diff --git a/frontends/nss/ecm_nss_ipv6.c b/frontends/nss/ecm_nss_ipv6.c
+index 1f7f51e..55849e7 100644
+--- a/frontends/nss/ecm_nss_ipv6.c
++++ b/frontends/nss/ecm_nss_ipv6.c
+@@ -1998,10 +1998,13 @@ static void ecm_nss_ipv6_stats_sync_req_work(struct work_struct *work)
+ 	int retry = 3;
+ 	unsigned long int current_jiffies;
+ 
++	spin_lock_bh(&ecm_nss_ipv6_lock);
+ 	if (ecm_nss_ipv6_accelerated_count == 0) {
++		spin_unlock_bh(&ecm_nss_ipv6_lock);
+ 		DEBUG_TRACE("There is no accelerated IPv6 connection\n");
+ 		goto reschedule;
+ 	}
++	spin_unlock_bh(&ecm_nss_ipv6_lock);
+ 
+ 	usleep_range(ECM_NSS_IPV6_STATS_SYNC_UDELAY - 100, ECM_NSS_IPV6_STATS_SYNC_UDELAY);
+ 
+-- 
+cgit v1.1
+