[dpdk-dev] [PATCH 0/3] eal / bonding pmd cleanup

[dpdk-dev] [PATCH 0/3] eal / bonding pmd cleanup

[David Marchand]

This patchset reworks the bonding pmd so that we don't need to modify the eal
for this pmd to work.

Basically, the arguments parsed at bond_init are stored in the bond private
structure to be used at dev_configure time.
If no argument are present, we suppose that the bonding api has been called.

-- 
David Marchand

David Marchand (3):
  bond: move param parsing in dev_configure
  Revert "eal: support link bonding device initialization"
  eal: probe pci devices at rte_eal_init time

 lib/librte_eal/bsdapp/eal/eal.c             |    6 +--
 lib/librte_eal/common/eal_common_dev.c      |   58 +++++++++------------------
 lib/librte_eal/common/eal_common_pci.c      |    3 --
 lib/librte_eal/common/include/eal_private.h |    7 ++++
 lib/librte_eal/common/include/rte_dev.h     |   14 +------
 lib/librte_eal/linuxapp/eal/eal.c           |    7 +---
 lib/librte_pmd_bond/rte_eth_bond_pmd.c      |   33 +++++++++++----
 lib/librte_pmd_bond/rte_eth_bond_private.h  |    2 +
 8 files changed, 57 insertions(+), 73 deletions(-)

-- 
1.7.10.4

[dpdk-dev] [PATCH 1/3] bond: move param parsing in dev_configure

[David Marchand]

Rework bond pmd initialisation so that we don't need to modify eal for this pmd
to work.

Signed-off-by: David Marchand <david.marchand@6wind.com>
---
 lib/librte_pmd_bond/rte_eth_bond_pmd.c     |   33 ++++++++++++++++++++++------
 lib/librte_pmd_bond/rte_eth_bond_private.h |    2 ++
 2 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/lib/librte_pmd_bond/rte_eth_bond_pmd.c b/lib/librte_pmd_bond/rte_eth_bond_pmd.c
index d72d6ed..42cf37a 100644
--- a/lib/librte_pmd_bond/rte_eth_bond_pmd.c
+++ b/lib/librte_pmd_bond/rte_eth_bond_pmd.c
@@ -707,11 +707,8 @@ bond_ethdev_close(struct rte_eth_dev *dev __rte_unused)
 {
 }
 
-static int
-bond_ethdev_configure(struct rte_eth_dev *dev __rte_unused)
-{
-	return 0;
-}
+/* forward declaration */
+static int bond_ethdev_configure(struct rte_eth_dev *dev);
 
 static void
 bond_ethdev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
@@ -1027,6 +1024,7 @@ struct eth_dev_ops default_dev_ops = {
 static int
 bond_init(const char *name, const char *params)
 {
+	struct bond_dev_private *internals;
 	struct rte_kvargs *kvlist;
 	uint8_t bonding_mode, socket_id;
 	int  arg_count, port_id;
@@ -1078,10 +1076,31 @@ bond_init(const char *name, const char *params)
 				name, bonding_mode, socket_id);
 		return -1;
 	}
+	internals = rte_eth_devices[port_id].data->dev_private;
+	internals->kvlist = kvlist;
 
 	RTE_LOG(INFO, EAL,
 			"Create bonded device %s on port %d in mode %u on socket %u.\n",
 			name, port_id, bonding_mode, socket_id);
+	return 0;
+}
+
+/* this part will resolve the slave portids after all the other pdev and vdev
+ * have been allocated */
+static int
+bond_ethdev_configure(struct rte_eth_dev *dev)
+{
+	char *name = dev->data->name;
+	struct bond_dev_private *internals = dev->data->dev_private;
+	struct rte_kvargs *kvlist = internals->kvlist;
+	int arg_count, port_id = dev - rte_eth_devices;
+
+	/*
+	 * if no kvlist, it means that this bonded device has been created
+	 * through the bonding api.
+	 */
+	if (!kvlist)
+		return 0;
 
 	/* Parse MAC address for bonded device */
 	arg_count = rte_kvargs_count(kvlist, PMD_BOND_MAC_ADDR_KVARG);
@@ -1199,8 +1218,8 @@ bond_init(const char *name, const char *params)
 }
 
 static struct rte_driver bond_drv = {
-	.name = PMD_BOND_NAME,
-	.type = PMD_BDEV,
+	.name = "eth_bond",
+	.type = PMD_VDEV,
 	.init = bond_init,
 };
 
diff --git a/lib/librte_pmd_bond/rte_eth_bond_private.h b/lib/librte_pmd_bond/rte_eth_bond_private.h
index 60f1e8d..1db6e4d 100644
--- a/lib/librte_pmd_bond/rte_eth_bond_private.h
+++ b/lib/librte_pmd_bond/rte_eth_bond_private.h
@@ -123,6 +123,8 @@ struct bond_dev_private {
 
 	/** Persisted configuration of slaves */
 	struct slave_conf presisted_slaves_conf[RTE_MAX_ETHPORTS];
+
+	struct rte_kvargs *kvlist;
 };
 
 extern struct eth_dev_ops default_dev_ops;
-- 
1.7.10.4

[dpdk-dev] [PATCH 2/3] Revert "eal: support link bonding device initialization"

[David Marchand]

This reverts commit a155d430119d947d3cb03136ce50924a642dbfe0.

Signed-off-by: David Marchand <david.marchand@6wind.com>
---
 lib/librte_eal/bsdapp/eal/eal.c             |   10 +----
 lib/librte_eal/common/eal_common_dev.c      |   58 +++++++++------------------
 lib/librte_eal/common/eal_common_pci.c      |    3 --
 lib/librte_eal/common/include/eal_private.h |    7 ++++
 lib/librte_eal/common/include/rte_dev.h     |   14 +------
 lib/librte_eal/linuxapp/eal/eal.c           |   11 +----
 6 files changed, 29 insertions(+), 74 deletions(-)

diff --git a/lib/librte_eal/bsdapp/eal/eal.c b/lib/librte_eal/bsdapp/eal/eal.c
index dad9e0c..6ca8758 100644
--- a/lib/librte_eal/bsdapp/eal/eal.c
+++ b/lib/librte_eal/bsdapp/eal/eal.c
@@ -898,7 +898,7 @@ rte_eal_init(int argc, char **argv)
 
 	rte_eal_mcfg_complete();
 
-	if (rte_eal_dev_init(PMD_INIT_PRE_PCI_PROBE) < 0)
+	if (rte_eal_dev_init() < 0)
 		rte_panic("Cannot init pmd devices\n");
 
 	RTE_LCORE_FOREACH_SLAVE(i) {
@@ -930,14 +930,6 @@ rte_eal_init(int argc, char **argv)
 	rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MASTER);
 	rte_eal_mp_wait_lcore();
 
-	/* Probe & Initialize PCI devices */
-	if (rte_eal_pci_probe())
-			rte_panic("Cannot probe PCI\n");
-
-	/* Initialize any outstanding devices */
-	if (rte_eal_dev_init(PMD_INIT_POST_PCI_PROBE) < 0)
-		rte_panic("Cannot init pmd devices\n");
-
 	return fctret;
 }
 
diff --git a/lib/librte_eal/common/eal_common_dev.c b/lib/librte_eal/common/eal_common_dev.c
index 1194419..eae5656 100644
--- a/lib/librte_eal/common/eal_common_dev.c
+++ b/lib/librte_eal/common/eal_common_dev.c
@@ -62,7 +62,7 @@ rte_eal_driver_unregister(struct rte_driver *driver)
 }
 
 int
-rte_eal_dev_init(uint8_t init_pri)
+rte_eal_dev_init(void)
 {
 	struct rte_devargs *devargs;
 	struct rte_driver *driver;
@@ -80,52 +80,30 @@ rte_eal_dev_init(uint8_t init_pri)
 			continue;
 
 		TAILQ_FOREACH(driver, &dev_driver_list, next) {
-			/* RTE_DEVTYPE_VIRTUAL can only be a virtual or bonded device,
-			 * virtual devices are initialized pre PCI probing and bonded
-			 * device are post pci probing */
-			if ((driver->type == PMD_VDEV && init_pri ==
-					PMD_INIT_PRE_PCI_PROBE) ||
-				(driver->type == PMD_BDEV && init_pri ==
-						PMD_INIT_POST_PCI_PROBE)) {
+			if (driver->type != PMD_VDEV)
+				continue;
 
-				/* search a driver prefix in virtual device name */
-				if (!strncmp(driver->name, devargs->virtual.drv_name,
-						strlen(driver->name))) {
-					printf("init (%u) %s\n", init_pri, devargs->virtual.drv_name);
-					driver->init(devargs->virtual.drv_name,
-						devargs->args);
-					break;
-				}
+			/* search a driver prefix in virtual device name */
+			if (!strncmp(driver->name, devargs->virtual.drv_name,
+					strlen(driver->name))) {
+				driver->init(devargs->virtual.drv_name,
+					devargs->args);
+				break;
 			}
 		}
 
-		/* If initializing pre PCI probe, then we don't expect a bonded driver
-		 * to be found */
-		if (init_pri == PMD_INIT_PRE_PCI_PROBE &&
-				strncmp(PMD_BOND_NAME, devargs->virtual.drv_name,
-					strlen(PMD_BOND_NAME)) != 0) {
-			if (driver == NULL) {
-				rte_panic("no driver found for virtual device %s\n",
-					devargs->virtual.drv_name);
-			}
-		} else if (init_pri == PMD_INIT_POST_PCI_PROBE &&
-				strncmp(PMD_BOND_NAME, devargs->virtual.drv_name,
-					strlen(PMD_BOND_NAME)) == 0) {
-			if (driver == NULL) {
-				rte_panic("no driver found for bonded device %s\n",
-					devargs->virtual.drv_name);
-			}
+		if (driver == NULL) {
+			rte_panic("no driver found for %s\n",
+				  devargs->virtual.drv_name);
 		}
 	}
 
-	/* Once the vdevs are initialized, start calling all the pdev drivers */
-	if (init_pri == PMD_INIT_PRE_PCI_PROBE) {
-		TAILQ_FOREACH(driver, &dev_driver_list, next) {
-			if (driver->type != PMD_PDEV)
-				continue;
-			/* PDEV drivers don't get passed any parameters */
-			driver->init(NULL, NULL);
-		}
+	/* Once the vdevs are initalized, start calling all the pdev drivers */
+	TAILQ_FOREACH(driver, &dev_driver_list, next) {
+		if (driver->type != PMD_PDEV)
+			continue;
+		/* PDEV drivers don't get passed any parameters */
+		driver->init(NULL, NULL);
 	}
 	return 0;
 }
diff --git a/lib/librte_eal/common/eal_common_pci.c b/lib/librte_eal/common/eal_common_pci.c
index c637361..af809a8 100644
--- a/lib/librte_eal/common/eal_common_pci.c
+++ b/lib/librte_eal/common/eal_common_pci.c
@@ -150,9 +150,6 @@ rte_eal_pci_probe(void)
 		probe_all = 1;
 
 	TAILQ_FOREACH(dev, &pci_device_list, next) {
-		/* check if device has already been initialized */
-		if (dev->driver != NULL)
-			continue;
 
 		/* set devargs in PCI structure */
 		devargs = pci_devargs_lookup(dev);
diff --git a/lib/librte_eal/common/include/eal_private.h b/lib/librte_eal/common/include/eal_private.h
index b440ffb..232fcec 100644
--- a/lib/librte_eal/common/include/eal_private.h
+++ b/lib/librte_eal/common/include/eal_private.h
@@ -196,4 +196,11 @@ int rte_eal_intr_init(void);
  */
 int rte_eal_alarm_init(void);
 
+/**
+ * This function initialises any virtual devices
+ *
+ * This function is private to the EAL.
+ */
+int rte_eal_dev_init(void);
+
 #endif /* _EAL_PRIVATE_H_ */
diff --git a/lib/librte_eal/common/include/rte_dev.h b/lib/librte_eal/common/include/rte_dev.h
index d89f1a5..f7e3a10 100644
--- a/lib/librte_eal/common/include/rte_dev.h
+++ b/lib/librte_eal/common/include/rte_dev.h
@@ -62,16 +62,6 @@ typedef int (rte_dev_init_t)(const char *name, const char *args);
 enum pmd_type {
 	PMD_VDEV = 0,
 	PMD_PDEV = 1,
-	PMD_BDEV = 2,	/**< Poll Mode Driver Bonded Device*/
-};
-
-#define PMD_BOND_NAME "eth_bond"
-
-/**
- * Driver initialization */
-enum pmd_init_priority {
-	PMD_INIT_PRE_PCI_PROBE = 0,
-	PMD_INIT_POST_PCI_PROBE = 1,
 };
 
 /**
@@ -103,9 +93,9 @@ void rte_eal_driver_register(struct rte_driver *driver);
 void rte_eal_driver_unregister(struct rte_driver *driver);
 
 /**
- * Initialize all the registered drivers in this process
+ * Initalize all the registered drivers in this process
  */
-int rte_eal_dev_init(uint8_t init_priority);
+int rte_eal_dev_init(void);
 
 #define PMD_REGISTER_DRIVER(d)\
 void devinitfn_ ##d(void);\
diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index 884aa9b..392bedf 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -75,7 +75,6 @@
 #include <rte_atomic.h>
 #include <malloc_heap.h>
 #include <rte_eth_ring.h>
-#include <rte_dev.h>
 
 #include "eal_private.h"
 #include "eal_thread.h"
@@ -1178,7 +1177,7 @@ rte_eal_init(int argc, char **argv)
 	RTE_LOG(DEBUG, EAL, "Master core %u is ready (tid=%x)\n",
 		rte_config.master_lcore, (int)thread_id);
 
-	if (rte_eal_dev_init(PMD_INIT_PRE_PCI_PROBE) < 0)
+	if (rte_eal_dev_init() < 0)
 		rte_panic("Cannot init pmd devices\n");
 
 	RTE_LCORE_FOREACH_SLAVE(i) {
@@ -1208,14 +1207,6 @@ rte_eal_init(int argc, char **argv)
 	rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MASTER);
 	rte_eal_mp_wait_lcore();
 
-	/* Probe & Initialize PCI devices */
-	if (rte_eal_pci_probe())
-			rte_panic("Cannot probe PCI\n");
-
-	/* Initialize any outstanding devices */
-	if (rte_eal_dev_init(PMD_INIT_POST_PCI_PROBE) < 0)
-		rte_panic("Cannot init pmd devices\n");
-
 	return fctret;
 }
 
-- 
1.7.10.4

[dpdk-dev] [PATCH 3/3] eal: probe pci devices at rte_eal_init time

[David Marchand]

Restore call to rte_eal_pci_probe() from commit
a155d430119d947d3cb03136ce50924a642dbfe0 so that applications do not have to
know that pci devices should be probed.

Signed-off-by: David Marchand <david.marchand@6wind.com>
---
 lib/librte_eal/bsdapp/eal/eal.c   |    4 ++++
 lib/librte_eal/linuxapp/eal/eal.c |    4 ++++
 2 files changed, 8 insertions(+)

diff --git a/lib/librte_eal/bsdapp/eal/eal.c b/lib/librte_eal/bsdapp/eal/eal.c
index 6ca8758..34f29f1 100644
--- a/lib/librte_eal/bsdapp/eal/eal.c
+++ b/lib/librte_eal/bsdapp/eal/eal.c
@@ -930,6 +930,10 @@ rte_eal_init(int argc, char **argv)
 	rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MASTER);
 	rte_eal_mp_wait_lcore();
 
+	/* Probe & Initialize PCI devices */
+	if (rte_eal_pci_probe())
+			rte_panic("Cannot probe PCI\n");
+
 	return fctret;
 }
 
diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index 392bedf..0ae5959 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -1207,6 +1207,10 @@ rte_eal_init(int argc, char **argv)
 	rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MASTER);
 	rte_eal_mp_wait_lcore();
 
+	/* Probe & Initialize PCI devices */
+	if (rte_eal_pci_probe())
+			rte_panic("Cannot probe PCI\n");
+
 	return fctret;
 }
 
-- 
1.7.10.4

Re: [dpdk-dev] [PATCH 0/3] eal / bonding pmd cleanup

[David Marchand]

On Tue, Aug 26, 2014 at 4:12 PM, David Marchand <david.marchand@6wind.com>
wrote:

> This patchset reworks the bonding pmd so that we don't need to modify the
> eal
> for this pmd to work.
>
> Basically, the arguments parsed at bond_init are stored in the bond private
> structure to be used at dev_configure time.
> If no argument are present, we suppose that the bonding api has been
> called.
>

I did not get any comment on these patches.
Anyone ?

The idea here is to keep pmd stuff in the pmds and avoid polluting the eal.


-- 
David Marchand

Re: [dpdk-dev] [PATCH 0/3] eal / bonding pmd cleanup

[David Marchand]

On Tue, Sep 16, 2014 at 3:05 PM, David Marchand <david.marchand@6wind.com>
wrote:

> On Tue, Aug 26, 2014 at 4:12 PM, David Marchand <david.marchand@6wind.com>
> wrote:
>
>> This patchset reworks the bonding pmd so that we don't need to modify the
>> eal
>> for this pmd to work.
>>
>> Basically, the arguments parsed at bond_init are stored in the bond
>> private
>> structure to be used at dev_configure time.
>> If no argument are present, we suppose that the bonding api has been
>> called.
>>
>
> I did not get any comment on these patches.
> Anyone ?
>
> The idea here is to keep pmd stuff in the pmds and avoid polluting the eal.
>

ping


-- 
David Marchand

Re: [dpdk-dev] [PATCH 0/3] eal / bonding pmd cleanup

[Neil Horman]

On Mon, Sep 22, 2014 at 01:02:08PM +0200, David Marchand wrote:
> On Tue, Sep 16, 2014 at 3:05 PM, David Marchand <david.marchand@6wind.com>
> wrote:
> 
> > On Tue, Aug 26, 2014 at 4:12 PM, David Marchand <david.marchand@6wind.com>
> > wrote:
> >
> >> This patchset reworks the bonding pmd so that we don't need to modify the
> >> eal
> >> for this pmd to work.
> >>
> >> Basically, the arguments parsed at bond_init are stored in the bond
> >> private
> >> structure to be used at dev_configure time.
> >> If no argument are present, we suppose that the bonding api has been
> >> called.
> >>
> >
> > I did not get any comment on these patches.
> > Anyone ?
> >
> > The idea here is to keep pmd stuff in the pmds and avoid polluting the eal.
> >
> 
> ping
Sorry, it was on my todo list and it kept getting pushed back.  I like the
change, its makes great sense and does proper isolation of the PMD.

Acked-by: Neil Horman <nhorman@tuxdriver.com>

> 
> 
> -- 
> David Marchand
> 

Re: [dpdk-dev] [PATCH 0/3] eal / bonding pmd cleanup

[Thomas Monjalon]

> > >> This patchset reworks the bonding pmd so that we don't need to modify the
> > >> eal
> > >> for this pmd to work.
> > >>
> > >> Basically, the arguments parsed at bond_init are stored in the bond
> > >> private
> > >> structure to be used at dev_configure time.
> > >> If no argument are present, we suppose that the bonding api has been
> > >> called.
> > >>
> > >
> > > I did not get any comment on these patches.
> > > Anyone ?
> > >
> > > The idea here is to keep pmd stuff in the pmds and avoid polluting the eal.
> > 
> > ping
> 
> Sorry, it was on my todo list and it kept getting pushed back.  I like the
> change, its makes great sense and does proper isolation of the PMD.
> 
> Acked-by: Neil Horman <nhorman@tuxdriver.com>

Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>

Applied.
Patches 2 and 3 were merged since 2 is a revert and 3 is a partial revert
of the revert ;)

This patchset prove that my initial request was not so complex :)
(http://dpdk.org/ml/archives/dev/2014-June/003833.html)

Thanks
-- 
Thomas