[dpdk-dev] [RFC 07/14] e1000: use rte_eth_link_update

[Stephen Hemminger <stephen@networkplumber.org>]

Use new helper API.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 drivers/net/e1000/em_ethdev.c  | 70 +++--------------------------------------
 drivers/net/e1000/igb_ethdev.c | 71 +++---------------------------------------
 2 files changed, 10 insertions(+), 131 deletions(-)

diff --git a/drivers/net/e1000/em_ethdev.c b/drivers/net/e1000/em_ethdev.c
index 3d4ab93687f6..8d9783adcec0 100644
--- a/drivers/net/e1000/em_ethdev.c
+++ b/drivers/net/e1000/em_ethdev.c
@@ -49,7 +49,6 @@
 #include <rte_memory.h>
 #include <rte_memzone.h>
 #include <rte_eal.h>
-#include <rte_atomic.h>
 #include <rte_malloc.h>
 #include <rte_dev.h>
 
@@ -222,57 +221,6 @@ static const struct eth_dev_ops eth_em_ops = {
 	.txq_info_get         = em_txq_info_get,
 };
 
-/**
- * Atomically reads the link status information from global
- * structure rte_eth_dev.
- *
- * @param dev
- *   - Pointer to the structure rte_eth_dev to read from.
- *   - Pointer to the buffer to be saved with the link status.
- *
- * @return
- *   - On success, zero.
- *   - On failure, negative value.
- */
-static inline int
-rte_em_dev_atomic_read_link_status(struct rte_eth_dev *dev,
-				struct rte_eth_link *link)
-{
-	struct rte_eth_link *dst = link;
-	struct rte_eth_link *src = &(dev->data->dev_link);
-
-	if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
-					*(uint64_t *)src) == 0)
-		return -1;
-
-	return 0;
-}
-
-/**
- * Atomically writes the link status information into global
- * structure rte_eth_dev.
- *
- * @param dev
- *   - Pointer to the structure rte_eth_dev to read from.
- *   - Pointer to the buffer to be saved with the link status.
- *
- * @return
- *   - On success, zero.
- *   - On failure, negative value.
- */
-static inline int
-rte_em_dev_atomic_write_link_status(struct rte_eth_dev *dev,
-				struct rte_eth_link *link)
-{
-	struct rte_eth_link *dst = &(dev->data->dev_link);
-	struct rte_eth_link *src = link;
-
-	if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
-					*(uint64_t *)src) == 0)
-		return -1;
-
-	return 0;
-}
 
 /**
  *  eth_em_dev_is_ich8 - Check for ICH8 device
@@ -793,7 +741,7 @@ eth_em_stop(struct rte_eth_dev *dev)
 
 	/* clear the recorded link status */
 	memset(&link, 0, sizeof(link));
-	rte_em_dev_atomic_write_link_status(dev, &link);
+	_rte_eth_link_update(dev, &link);
 
 	if (!rte_intr_allow_others(intr_handle))
 		/* resume to the default handler */
@@ -1150,7 +1098,7 @@ eth_em_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 {
 	struct e1000_hw *hw =
 		E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-	struct rte_eth_link link, old;
+	struct rte_eth_link link;
 	int link_check, count;
 
 	link_check = 0;
@@ -1185,8 +1133,6 @@ eth_em_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 		rte_delay_ms(EM_LINK_UPDATE_CHECK_INTERVAL);
 	}
 	memset(&link, 0, sizeof(link));
-	rte_em_dev_atomic_read_link_status(dev, &link);
-	old = link;
 
 	/* Now we check if a transition has happened */
 	if (link_check && (link.link_status == ETH_LINK_DOWN)) {
@@ -1205,14 +1151,8 @@ eth_em_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 		link.link_status = ETH_LINK_DOWN;
 		link.link_autoneg = ETH_LINK_SPEED_FIXED;
 	}
-	rte_em_dev_atomic_write_link_status(dev, &link);
-
-	/* not changed */
-	if (old.link_status == link.link_status)
-		return -1;
 
-	/* changed */
-	return 0;
+	return _rte_eth_link_update(dev, &link);
 }
 
 /*
@@ -1620,8 +1560,8 @@ eth_em_interrupt_action(struct rte_eth_dev *dev,
 	if (ret < 0)
 		return 0;
 
-	memset(&link, 0, sizeof(link));
-	rte_em_dev_atomic_read_link_status(dev, &link);
+	_rte_eth_link_read(dev, &link);
+
 	if (link.link_status) {
 		PMD_INIT_LOG(INFO, " Port %d: Link Up - speed %u Mbps - %s",
 			     dev->data->port_id, (unsigned)link.link_speed,
diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
index da03d9bb348e..1a28d2fee286 100644
--- a/drivers/net/e1000/igb_ethdev.c
+++ b/drivers/net/e1000/igb_ethdev.c
@@ -49,7 +49,6 @@
 #include <rte_memory.h>
 #include <rte_memzone.h>
 #include <rte_eal.h>
-#include <rte_atomic.h>
 #include <rte_malloc.h>
 #include <rte_dev.h>
 
@@ -549,57 +548,6 @@ static const struct rte_igb_xstats_name_off rte_igbvf_stats_strings[] = {
 #define IGBVF_NB_XSTATS (sizeof(rte_igbvf_stats_strings) / \
 		sizeof(rte_igbvf_stats_strings[0]))
 
-/**
- * Atomically reads the link status information from global
- * structure rte_eth_dev.
- *
- * @param dev
- *   - Pointer to the structure rte_eth_dev to read from.
- *   - Pointer to the buffer to be saved with the link status.
- *
- * @return
- *   - On success, zero.
- *   - On failure, negative value.
- */
-static inline int
-rte_igb_dev_atomic_read_link_status(struct rte_eth_dev *dev,
-				struct rte_eth_link *link)
-{
-	struct rte_eth_link *dst = link;
-	struct rte_eth_link *src = &(dev->data->dev_link);
-
-	if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
-					*(uint64_t *)src) == 0)
-		return -1;
-
-	return 0;
-}
-
-/**
- * Atomically writes the link status information into global
- * structure rte_eth_dev.
- *
- * @param dev
- *   - Pointer to the structure rte_eth_dev to read from.
- *   - Pointer to the buffer to be saved with the link status.
- *
- * @return
- *   - On success, zero.
- *   - On failure, negative value.
- */
-static inline int
-rte_igb_dev_atomic_write_link_status(struct rte_eth_dev *dev,
-				struct rte_eth_link *link)
-{
-	struct rte_eth_link *dst = &(dev->data->dev_link);
-	struct rte_eth_link *src = link;
-
-	if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
-					*(uint64_t *)src) == 0)
-		return -1;
-
-	return 0;
-}
 
 static inline void
 igb_intr_enable(struct rte_eth_dev *dev)
@@ -1545,7 +1493,7 @@ eth_igb_stop(struct rte_eth_dev *dev)
 
 	/* clear the recorded link status */
 	memset(&link, 0, sizeof(link));
-	rte_igb_dev_atomic_write_link_status(dev, &link);
+	_rte_eth_link_update(dev, &link);
 
 	if (!rte_intr_allow_others(intr_handle))
 		/* resume to the default handler */
@@ -1621,7 +1569,7 @@ eth_igb_close(struct rte_eth_dev *dev)
 	}
 
 	memset(&link, 0, sizeof(link));
-	rte_igb_dev_atomic_write_link_status(dev, &link);
+	_rte_eth_link_update(dev, &link);
 }
 
 static int
@@ -2366,7 +2314,7 @@ eth_igb_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 {
 	struct e1000_hw *hw =
 		E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-	struct rte_eth_link link, old;
+	struct rte_eth_link link;
 	int link_check, count;
 
 	link_check = 0;
@@ -2407,8 +2355,6 @@ eth_igb_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 		rte_delay_ms(IGB_LINK_UPDATE_CHECK_INTERVAL);
 	}
 	memset(&link, 0, sizeof(link));
-	rte_igb_dev_atomic_read_link_status(dev, &link);
-	old = link;
 
 	/* Now we check if a transition has happened */
 	if (link_check) {
@@ -2427,14 +2373,8 @@ eth_igb_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 		link.link_status = ETH_LINK_DOWN;
 		link.link_autoneg = ETH_LINK_SPEED_FIXED;
 	}
-	rte_igb_dev_atomic_write_link_status(dev, &link);
 
-	/* not changed */
-	if (old.link_status == link.link_status)
-		return -1;
-
-	/* changed */
-	return 0;
+	return _rte_eth_link_update(dev, &link);
 }
 
 /*
@@ -2865,8 +2805,7 @@ eth_igb_interrupt_action(struct rte_eth_dev *dev,
 		if (ret < 0)
 			return 0;
 
-		memset(&link, 0, sizeof(link));
-		rte_igb_dev_atomic_read_link_status(dev, &link);
+		_rte_eth_link_read(dev, &link);
 		if (link.link_status) {
 			PMD_INIT_LOG(INFO,
 				     " Port %d: Link Up - speed %u Mbps - %s",
-- 
2.11.0