patches for DPDK stable branches
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From: Christian Ehrhardt <christian.ehrhardt@canonical.com>
To: Chengwen Feng <fengchengwen@huawei.com>
Cc: Min Hu <humin29@huawei.com>,
	Morten Brørup <mb@smartsharesystems.com>,
	dpdk stable <stable@dpdk.org>
Subject: [dpdk-stable] patch 'ipc: use monotonic clock' has been queued to stable release 19.11.9
Date: Thu, 10 Jun 2021 14:05:53 +0200
Message-ID: <20210610120641.885862-5-christian.ehrhardt@canonical.com> (raw)
In-Reply-To: <20210610120641.885862-1-christian.ehrhardt@canonical.com>

Hi,

FYI, your patch has been queued to stable release 19.11.9

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 06/12/21. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/cpaelzer/dpdk-stable-queue

This queued commit can be viewed at:
https://github.com/cpaelzer/dpdk-stable-queue/commit/0bc04a9e43521816b2c8bda20127c958bb79454f

Thanks.

Christian Ehrhardt <christian.ehrhardt@canonical.com>

---
From 0bc04a9e43521816b2c8bda20127c958bb79454f Mon Sep 17 00:00:00 2001
From: Chengwen Feng <fengchengwen@huawei.com>
Date: Tue, 11 May 2021 18:41:23 +0800
Subject: [PATCH] ipc: use monotonic clock
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

[ upstream commit cc994d3922b7cd464d84fbef110dd65348e0a0da ]

Currently, the mp uses gettimeofday() API to get the time, and used as
timeout parameter.

But the time which gets from gettimeofday() API isn't monotonically
increasing. The process may fail if the system time is changed.

This fixes it by using clock_gettime() API with monotonic attribution.

Fixes: 783b6e54971d ("eal: add synchronous multi-process communication")
Fixes: f05e26051c15 ("eal: add IPC asynchronous request")

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Acked-by: Morten Brørup <mb@smartsharesystems.com>
---
 lib/librte_eal/common/eal_common_proc.c | 27 ++++++++++++-------------
 1 file changed, 13 insertions(+), 14 deletions(-)

diff --git a/lib/librte_eal/common/eal_common_proc.c b/lib/librte_eal/common/eal_common_proc.c
index 13ae2b915e..922569f3f5 100644
--- a/lib/librte_eal/common/eal_common_proc.c
+++ b/lib/librte_eal/common/eal_common_proc.c
@@ -483,14 +483,11 @@ async_reply_handle_thread_unsafe(void *arg)
 	struct pending_request *req = (struct pending_request *)arg;
 	enum async_action action;
 	struct timespec ts_now;
-	struct timeval now;
 
-	if (gettimeofday(&now, NULL) < 0) {
+	if (clock_gettime(CLOCK_MONOTONIC, &ts_now) < 0) {
 		RTE_LOG(ERR, EAL, "Cannot get current time\n");
 		goto no_trigger;
 	}
-	ts_now.tv_nsec = now.tv_usec * 1000;
-	ts_now.tv_sec = now.tv_sec;
 
 	action = process_async_request(req, &ts_now);
 
@@ -884,6 +881,7 @@ mp_request_sync(const char *dst, struct rte_mp_msg *req,
 	       struct rte_mp_reply *reply, const struct timespec *ts)
 {
 	int ret;
+	pthread_condattr_t attr;
 	struct rte_mp_msg msg, *tmp;
 	struct pending_request pending_req, *exist;
 
@@ -892,7 +890,9 @@ mp_request_sync(const char *dst, struct rte_mp_msg *req,
 	strlcpy(pending_req.dst, dst, sizeof(pending_req.dst));
 	pending_req.request = req;
 	pending_req.reply = &msg;
-	pthread_cond_init(&pending_req.sync.cond, NULL);
+	pthread_condattr_init(&attr);
+	pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
+	pthread_cond_init(&pending_req.sync.cond, &attr);
 
 	exist = find_pending_request(dst, req->name);
 	if (exist) {
@@ -955,8 +955,7 @@ rte_mp_request_sync(struct rte_mp_msg *req, struct rte_mp_reply *reply,
 	int dir_fd, ret = -1;
 	DIR *mp_dir;
 	struct dirent *ent;
-	struct timeval now;
-	struct timespec end;
+	struct timespec now, end;
 
 	RTE_LOG(DEBUG, EAL, "request: %s\n", req->name);
 
@@ -973,15 +972,15 @@ rte_mp_request_sync(struct rte_mp_msg *req, struct rte_mp_reply *reply,
 		return -1;
 	}
 
-	if (gettimeofday(&now, NULL) < 0) {
+	if (clock_gettime(CLOCK_MONOTONIC, &now) < 0) {
 		RTE_LOG(ERR, EAL, "Failed to get current time\n");
 		rte_errno = errno;
 		goto end;
 	}
 
-	end.tv_nsec = (now.tv_usec * 1000 + ts->tv_nsec) % 1000000000;
+	end.tv_nsec = (now.tv_nsec + ts->tv_nsec) % 1000000000;
 	end.tv_sec = now.tv_sec + ts->tv_sec +
-			(now.tv_usec * 1000 + ts->tv_nsec) / 1000000000;
+			(now.tv_nsec + ts->tv_nsec) / 1000000000;
 
 	/* for secondary process, send request to the primary process only */
 	if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
@@ -1055,7 +1054,7 @@ rte_mp_request_async(struct rte_mp_msg *req, const struct timespec *ts,
 	int dir_fd, ret = 0;
 	DIR *mp_dir;
 	struct dirent *ent;
-	struct timeval now;
+	struct timespec now;
 	struct timespec *end;
 	bool dummy_used = false;
 
@@ -1070,7 +1069,7 @@ rte_mp_request_async(struct rte_mp_msg *req, const struct timespec *ts,
 		return -1;
 	}
 
-	if (gettimeofday(&now, NULL) < 0) {
+	if (clock_gettime(CLOCK_MONOTONIC, &now) < 0) {
 		RTE_LOG(ERR, EAL, "Failed to get current time\n");
 		rte_errno = errno;
 		return -1;
@@ -1092,9 +1091,9 @@ rte_mp_request_async(struct rte_mp_msg *req, const struct timespec *ts,
 	end = &param->end;
 	reply = &param->user_reply;
 
-	end->tv_nsec = (now.tv_usec * 1000 + ts->tv_nsec) % 1000000000;
+	end->tv_nsec = (now.tv_nsec + ts->tv_nsec) % 1000000000;
 	end->tv_sec = now.tv_sec + ts->tv_sec +
-			(now.tv_usec * 1000 + ts->tv_nsec) / 1000000000;
+			(now.tv_nsec + ts->tv_nsec) / 1000000000;
 	reply->nb_sent = 0;
 	reply->nb_received = 0;
 	reply->msgs = NULL;
-- 
2.31.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-06-10 14:04:58.336059988 +0200
+++ 0005-ipc-use-monotonic-clock.patch	2021-06-10 14:04:57.998024139 +0200
@@ -1 +1 @@
-From cc994d3922b7cd464d84fbef110dd65348e0a0da Mon Sep 17 00:00:00 2001
+From 0bc04a9e43521816b2c8bda20127c958bb79454f Mon Sep 17 00:00:00 2001
@@ -8,0 +9,2 @@
+[ upstream commit cc994d3922b7cd464d84fbef110dd65348e0a0da ]
+
@@ -19 +20,0 @@
-Cc: stable@dpdk.org
@@ -25 +26 @@
- lib/eal/common/eal_common_proc.c | 27 +++++++++++++--------------
+ lib/librte_eal/common/eal_common_proc.c | 27 ++++++++++++-------------
@@ -28,5 +29,5 @@
-diff --git a/lib/eal/common/eal_common_proc.c b/lib/eal/common/eal_common_proc.c
-index 6d1af3c0e7..dc4a2efa82 100644
---- a/lib/eal/common/eal_common_proc.c
-+++ b/lib/eal/common/eal_common_proc.c
-@@ -490,14 +490,11 @@ async_reply_handle_thread_unsafe(void *arg)
+diff --git a/lib/librte_eal/common/eal_common_proc.c b/lib/librte_eal/common/eal_common_proc.c
+index 13ae2b915e..922569f3f5 100644
+--- a/lib/librte_eal/common/eal_common_proc.c
++++ b/lib/librte_eal/common/eal_common_proc.c
+@@ -483,14 +483,11 @@ async_reply_handle_thread_unsafe(void *arg)
@@ -48 +49 @@
-@@ -896,6 +893,7 @@ mp_request_sync(const char *dst, struct rte_mp_msg *req,
+@@ -884,6 +881,7 @@ mp_request_sync(const char *dst, struct rte_mp_msg *req,
@@ -56 +57 @@
-@@ -904,7 +902,9 @@ mp_request_sync(const char *dst, struct rte_mp_msg *req,
+@@ -892,7 +890,9 @@ mp_request_sync(const char *dst, struct rte_mp_msg *req,
@@ -67 +68 @@
-@@ -967,8 +967,7 @@ rte_mp_request_sync(struct rte_mp_msg *req, struct rte_mp_reply *reply,
+@@ -955,8 +955,7 @@ rte_mp_request_sync(struct rte_mp_msg *req, struct rte_mp_reply *reply,
@@ -74,2 +74,0 @@
- 	const struct internal_config *internal_conf =
- 		eal_get_internal_configuration();
@@ -77 +76,3 @@
-@@ -987,15 +986,15 @@ rte_mp_request_sync(struct rte_mp_msg *req, struct rte_mp_reply *reply,
+ 	RTE_LOG(DEBUG, EAL, "request: %s\n", req->name);
+ 
+@@ -973,15 +972,15 @@ rte_mp_request_sync(struct rte_mp_msg *req, struct rte_mp_reply *reply,
@@ -96 +97 @@
-@@ -1069,7 +1068,7 @@ rte_mp_request_async(struct rte_mp_msg *req, const struct timespec *ts,
+@@ -1055,7 +1054,7 @@ rte_mp_request_async(struct rte_mp_msg *req, const struct timespec *ts,
@@ -104,2 +105,2 @@
- 	const struct internal_config *internal_conf =
-@@ -1086,7 +1085,7 @@ rte_mp_request_async(struct rte_mp_msg *req, const struct timespec *ts,
+ 
+@@ -1070,7 +1069,7 @@ rte_mp_request_async(struct rte_mp_msg *req, const struct timespec *ts,
@@ -114 +115 @@
-@@ -1108,9 +1107,9 @@ rte_mp_request_async(struct rte_mp_msg *req, const struct timespec *ts,
+@@ -1092,9 +1091,9 @@ rte_mp_request_async(struct rte_mp_msg *req, const struct timespec *ts,

  parent reply	other threads:[~2021-06-10 12:06 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-10 12:05 [dpdk-stable] patch 'app/testpmd: fix NVGRE encap configuration' " Christian Ehrhardt
2021-06-10 12:05 ` [dpdk-stable] patch 'Revert "kni: fix compilation on SLES15-SP3"' " Christian Ehrhardt
2021-06-10 12:05 ` [dpdk-stable] patch 'bus/fslmc: remove unused debug macro' " Christian Ehrhardt
2021-06-10 12:05 ` [dpdk-stable] patch 'raw/skeleton: add missing check after setting attribute' " Christian Ehrhardt
2021-06-10 12:05 ` Christian Ehrhardt [this message]
2021-06-10 12:05 ` [dpdk-stable] patch 'examples/timer: fix time interval' " Christian Ehrhardt
2021-06-10 12:05 ` [dpdk-stable] patch 'test/timer: check memzone allocation' " Christian Ehrhardt
2021-06-10 12:05 ` [dpdk-stable] patch 'power: fix sanity checks for guest channel read' " Christian Ehrhardt
2021-06-10 12:05 ` [dpdk-stable] patch 'event/dpaa2: remove unused macros' " Christian Ehrhardt
2021-06-10 12:05 ` [dpdk-stable] patch 'app/eventdev: fix lcore parsing skipping last core' " Christian Ehrhardt
2021-06-10 12:05 ` [dpdk-stable] patch 'net/ice/base: fix memory allocation wrapper' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/ena: switch memcpy to optimized version' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/ena/base: fix type conversions by explicit casting' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/ena: remove endian swap functions' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/nfp: fix reporting of RSS capabilities' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/hns3: return error on PCI config write failure' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/hns3: clear hash map on flow director clear' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/hns3: fix querying flow director counter for out param' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/hns3: fix secondary process request start/stop Rx/Tx' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/hns3: fix ordering in secondary process initialization' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/iavf: fix Tx context descriptor' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/ice: fix VSI array out of bounds access' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/i40e: fix VF RSS configuration' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/bnx2x: fix build with GCC 11' " Christian Ehrhardt
2021-06-10 12:06 ` Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/ice/base: " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/tap: " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/mlx4: fix secondary process initialization ordering' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/mlx5: " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'crypto/qat: fix null authentication request' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'app/crypto-perf: check memory allocation' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'examples/rxtx_callbacks: fix port ID format specifier' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'examples/flow_classify: fix NUMA check of port and core' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'examples/l2fwd-cat: " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'examples/skeleton: " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'test: check flow classifier creation' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'test/power: fix CPU frequency check' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'test/power: add turbo mode to " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'test/power: fix low frequency test when turbo enabled' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'test/power: fix turbo test' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'test/table: fix build with GCC 11' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'examples/l3fwd-power: fix empty poll thresholds' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'test: fix division by zero' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'test/crypto: fix build with GCC 11' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/mlx4: fix leak when configured repeatedly' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/mlx5: " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/hns3: fix requested FC mode rollback' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/hns3: remove meaningless packet buffer " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/hns3: fix DCB reconfiguration' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'common/sfc_efx/base: limit reported MCDI response length' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'net/memif: fix Tx bps statistics for zero-copy' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'test: fix build with GCC 11' " Christian Ehrhardt
2021-06-10 12:06 ` [dpdk-stable] patch 'test/cmdline: silence clang 12 warning' " Christian Ehrhardt

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