[PATCH] fix bonding crash, remove old ABI support (217df670) · Commits · e / devices / android_kernel_samsung_universal8895

drivers/net/bonding/bond_main.c

+69 −211

Original line number	Diff line number	Diff line
		@@ -487,6 +487,8 @@
		* * Added xmit_hash_policy_layer34()
		* - Modified by Jay Vosburgh <fubar@us.ibm.com> to also support mode 4.
		* Set version to 2.6.3.
		* 2005/09/26 - Jay Vosburgh <fubar@us.ibm.com>
		* - Removed backwards compatibility for old ifenslaves. Version 2.6.4.
		*/

		//#define BONDING_DEBUG 1
		@@ -595,14 +597,7 @@ static int arp_ip_count = 0;
		static int bond_mode = BOND_MODE_ROUNDROBIN;
		static int xmit_hashtype= BOND_XMIT_POLICY_LAYER2;
		static int lacp_fast = 0;
		static int app_abi_ver = 0;
		static int orig_app_abi_ver = -1; /* This is used to save the first ABI version
		* we receive from the application. Once set,
		* it won't be changed, and the module will
		* refuse to enslave/release interfaces if the
		* command comes from an application using
		* another ABI version.
		*/

		struct bond_parm_tbl {
		char *modename;
		int mode;
		@@ -1702,13 +1697,15 @@ static int bond_enslave(struct net_device bond_dev, struct net_device slave_de
		}
		}

		if (app_abi_ver >= 1) {
		/* The application is using an ABI, which requires the
		* slave interface to be closed.
		/*
		* Old ifenslave binaries are no longer supported. These can
		* be identified with moderate accurary by the state of the slave:
		* the current ifenslave will set the interface down prior to
		* enslaving it; the old ifenslave will not.
		*/
		if ((slave_dev->flags & IFF_UP)) {
		printk(KERN_ERR DRV_NAME
		": Error: %s is up\n",
		printk(KERN_ERR DRV_NAME ": %s is up. "
		"This may be due to an out of date ifenslave.\n",
		slave_dev->name);
		res = -EPERM;
		goto err_undo_flags;
		@@ -1719,35 +1716,11 @@ static int bond_enslave(struct net_device bond_dev, struct net_device slave_de
		": Error: The slave device you specified does "
		"not support setting the MAC address.\n");
		printk(KERN_ERR
		"Your kernel likely does not support slave "
		"devices.\n");

		res = -EOPNOTSUPP;
		goto err_undo_flags;
		}
		} else {
		/* The application is not using an ABI, which requires the
		* slave interface to be open.
		*/
		if (!(slave_dev->flags & IFF_UP)) {
		printk(KERN_ERR DRV_NAME
		": Error: %s is not running\n",
		slave_dev->name);
		res = -EINVAL;
		goto err_undo_flags;
		}
		"Your kernel likely does not support slave devices.\n");

		if ((bond->params.mode == BOND_MODE_8023AD) \|\|
		(bond->params.mode == BOND_MODE_TLB) \|\|
		(bond->params.mode == BOND_MODE_ALB)) {
		printk(KERN_ERR DRV_NAME
		": Error: to use %s mode, you must upgrade "
		"ifenslave.\n",
		bond_mode_name(bond->params.mode));
		res = -EOPNOTSUPP;
		goto err_undo_flags;
		}
		}

		new_slave = kmalloc(sizeof(struct slave), GFP_KERNEL);
		if (!new_slave) {
		@@ -1762,16 +1735,16 @@ static int bond_enslave(struct net_device bond_dev, struct net_device slave_de
		*/
		new_slave->original_flags = slave_dev->flags;

		if (app_abi_ver >= 1) {
		/* save slave's original ("permanent") mac address for
		* modes that needs it, and for restoring it upon release,
		* and then set it to the master's address
		/*
		* Save slave's original ("permanent") mac address for modes
		* that need it, and for restoring it upon release, and then
		* set it to the master's address
		*/
		memcpy(new_slave->perm_hwaddr, slave_dev->dev_addr, ETH_ALEN);

		/* set slave to master's mac address
		* The application already set the master's
		* mac address to that of the first slave
		/*
		* Set slave to master's mac address. The application already
		* set the master's mac address to that of the first slave
		*/
		memcpy(addr.sa_data, bond_dev->dev_addr, bond_dev->addr_len);
		addr.sa_family = slave_dev->type;
		@@ -1787,17 +1760,12 @@ static int bond_enslave(struct net_device bond_dev, struct net_device slave_de
		dprintk("Openning slave %s failed\n", slave_dev->name);
		goto err_restore_mac;
		}
		}

		res = netdev_set_master(slave_dev, bond_dev);
		if (res) {
		dprintk("Error %d calling netdev_set_master\n", res);
		if (app_abi_ver < 1) {
		goto err_free;
		} else {
		goto err_close;
		}
		}

		new_slave->dev = slave_dev;

		@@ -1997,39 +1965,6 @@ static int bond_enslave(struct net_device bond_dev, struct net_device slave_de

		write_unlock_bh(&bond->lock);

		if (app_abi_ver < 1) {
		/*
		* !!! This is to support old versions of ifenslave.
		* We can remove this in 2.5 because our ifenslave takes
		* care of this for us.
		* We check to see if the master has a mac address yet.
		* If not, we'll give it the mac address of our slave device.
		*/
		int ndx = 0;

		for (ndx = 0; ndx < bond_dev->addr_len; ndx++) {
		dprintk("Checking ndx=%d of bond_dev->dev_addr\n",
		ndx);
		if (bond_dev->dev_addr[ndx] != 0) {
		dprintk("Found non-zero byte at ndx=%d\n",
		ndx);
		break;
		}
		}

		if (ndx == bond_dev->addr_len) {
		/*
		* We got all the way through the address and it was
		* all 0's.
		*/
		dprintk("%s doesn't have a MAC address yet. \n",
		bond_dev->name);
		dprintk("Going to give assign it from %s.\n",
		slave_dev->name);
		bond_sethwaddr(bond_dev, slave_dev);
		}
		}

		printk(KERN_INFO DRV_NAME
		": %s: enslaving %s as a%s interface with a%s link.\n",
		bond_dev->name, slave_dev->name,
		@@ -2227,12 +2162,10 @@ static int bond_release(struct net_device bond_dev, struct net_device slave_de
		/* close slave before restoring its mac address */
		dev_close(slave_dev);

		if (app_abi_ver >= 1) {
		/* restore original ("permanent") mac address */
		memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN);
		addr.sa_family = slave_dev->type;
		dev_set_mac_address(slave_dev, &addr);
		}

		/* restore the original state of the
		* IFF_NOARP flag that might have been
		@@ -2320,12 +2253,10 @@ static int bond_release_all(struct net_device *bond_dev)
		/* close slave before restoring its mac address */
		dev_close(slave_dev);

		if (app_abi_ver >= 1) {
		/* restore original ("permanent") mac address*/
		memcpy(addr.sa_data, slave->perm_hwaddr, ETH_ALEN);
		addr.sa_family = slave_dev->type;
		dev_set_mac_address(slave_dev, &addr);
		}

		/* restore the original state of the IFF_NOARP flag that might have
		* been set by bond_set_slave_inactive_flags()
		@@ -2423,57 +2354,6 @@ static int bond_ioctl_change_active(struct net_device *bond_dev, struct net_devi
		return res;
		}

		static int bond_ethtool_ioctl(struct net_device bond_dev, struct ifreq ifr)
		{
		struct ethtool_drvinfo info;
		void __user *addr = ifr->ifr_data;
		uint32_t cmd;

		if (get_user(cmd, (uint32_t __user *)addr)) {
		return -EFAULT;
		}

		switch (cmd) {
		case ETHTOOL_GDRVINFO:
		if (copy_from_user(&info, addr, sizeof(info))) {
		return -EFAULT;
		}

		if (strcmp(info.driver, "ifenslave") == 0) {
		int new_abi_ver;
		char *endptr;

		new_abi_ver = simple_strtoul(info.fw_version,
		&endptr, 0);
		if (*endptr) {
		printk(KERN_ERR DRV_NAME
		": Error: got invalid ABI "
		"version from application\n");

		return -EINVAL;
		}

		if (orig_app_abi_ver == -1) {
		orig_app_abi_ver = new_abi_ver;
		}

		app_abi_ver = new_abi_ver;
		}

		strncpy(info.driver, DRV_NAME, 32);
		strncpy(info.version, DRV_VERSION, 32);
		snprintf(info.fw_version, 32, "%d", BOND_ABI_VERSION);

		if (copy_to_user(addr, &info, sizeof(info))) {
		return -EFAULT;
		}

		return 0;
		default:
		return -EOPNOTSUPP;
		}
		}

		static int bond_info_query(struct net_device bond_dev, struct ifbond info)
		{
		struct bonding *bond = bond_dev->priv;
		@@ -3442,16 +3322,11 @@ static void bond_info_show_slave(struct seq_file seq, const struct slave slave
		seq_printf(seq, "Link Failure Count: %d\n",
		slave->link_failure_count);

		if (app_abi_ver >= 1) {
		seq_printf(seq,
		"Permanent HW addr: %02x:%02x:%02x:%02x:%02x:%02x\n",
		slave->perm_hwaddr[0],
		slave->perm_hwaddr[1],
		slave->perm_hwaddr[2],
		slave->perm_hwaddr[3],
		slave->perm_hwaddr[4],
		slave->perm_hwaddr[5]);
		}
		slave->perm_hwaddr[0], slave->perm_hwaddr[1],
		slave->perm_hwaddr[2], slave->perm_hwaddr[3],
		slave->perm_hwaddr[4], slave->perm_hwaddr[5]);

		if (bond->params.mode == BOND_MODE_8023AD) {
		const struct aggregator *agg
		@@ -4010,15 +3885,12 @@ static int bond_do_ioctl(struct net_device bond_dev, struct ifreq ifr, int cmd
		struct ifslave k_sinfo;
		struct ifslave __user *u_sinfo = NULL;
		struct mii_ioctl_data *mii = NULL;
		int prev_abi_ver = orig_app_abi_ver;
		int res = 0;

		dprintk("bond_ioctl: master=%s, cmd=%d\n",
		bond_dev->name, cmd);

		switch (cmd) {
		case SIOCETHTOOL:
		return bond_ethtool_ioctl(bond_dev, ifr);
		case SIOCGMIIPHY:
		mii = if_mii(ifr);
		if (!mii) {
		@@ -4090,21 +3962,6 @@ static int bond_do_ioctl(struct net_device bond_dev, struct ifreq ifr, int cmd
		return -EPERM;
		}

		if (orig_app_abi_ver == -1) {
		/* no orig_app_abi_ver was provided yet, so we'll use the
		* current one from now on, even if it's 0
		*/
		orig_app_abi_ver = app_abi_ver;

		} else if (orig_app_abi_ver != app_abi_ver) {
		printk(KERN_ERR DRV_NAME
		": Error: already using ifenslave ABI version %d; to "
		"upgrade ifenslave to version %d, you must first "
		"reload bonding.\n",
		orig_app_abi_ver, app_abi_ver);
		return -EINVAL;
		}

		slave_dev = dev_get_by_name(ifr->ifr_slave);

		dprintk("slave_dev=%p: \n", slave_dev);
		@@ -4137,14 +3994,6 @@ static int bond_do_ioctl(struct net_device bond_dev, struct ifreq ifr, int cmd
		dev_put(slave_dev);
		}

		if (res < 0) {
		/* The ioctl failed, so there's no point in changing the
		* orig_app_abi_ver. We'll restore it's value just in case
		* we've changed it earlier in this function.
		*/
		orig_app_abi_ver = prev_abi_ver;
		}

		return res;
		}

		@@ -4578,9 +4427,18 @@ static inline void bond_set_mode_ops(struct bonding *bond, int mode)
		}
		}

		static void bond_ethtool_get_drvinfo(struct net_device *bond_dev,
		struct ethtool_drvinfo *drvinfo)
		{
		strncpy(drvinfo->driver, DRV_NAME, 32);
		strncpy(drvinfo->version, DRV_VERSION, 32);
		snprintf(drvinfo->fw_version, 32, "%d", BOND_ABI_VERSION);
		}

		static struct ethtool_ops bond_ethtool_ops = {
		.get_tx_csum = ethtool_op_get_tx_csum,
		.get_sg = ethtool_op_get_sg,
		.get_drvinfo = bond_ethtool_get_drvinfo,
		};

		/*

drivers/net/bonding/bonding.h

+2 −2

Original line number	Diff line number	Diff line
		@@ -40,8 +40,8 @@
		#include "bond_3ad.h"
		#include "bond_alb.h"

		#define DRV_VERSION "2.6.3"
		#define DRV_RELDATE "June 8, 2005"
		#define DRV_VERSION "2.6.4"
		#define DRV_RELDATE "September 26, 2005"
		#define DRV_NAME "bonding"
		#define DRV_DESCRIPTION "Ethernet Channel Bonding Driver"