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dcb: Add ieee_dcb_delapp() and dcb op to delete app entry 

Now that we allow multiple IEEE App entries we need a way
to remove specific entries. To do this add the ieee_dcb_delapp()
routine.

Additionaly drivers may need to remove the APP entry from
their firmware tables. Add dcb ops routine to handle this.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Fastabend 2011-06-21 07:34:48 +00:00 committed by David S. Miller
parent b6db2174c5
commit f9ae7e4b51
3 changed files with 92 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/dcbnl.h
View File

@ -203,6 +203,7 @@ struct dcbmsg {
* @DCB_CMD_GFEATCFG: get DCBX features flags
* @DCB_CMD_SFEATCFG: set DCBX features negotiation flags
* @DCB_CMD_CEE_GET: get CEE aggregated configuration
* @DCB_CMD_IEEE_DEL: delete IEEE 802.1Qaz configuration
*/
enum dcbnl_commands {
DCB_CMD_UNDEFINED,
@ -246,6 +247,7 @@ enum dcbnl_commands {
DCB_CMD_SFEATCFG,
DCB_CMD_CEE_GET,
DCB_CMD_IEEE_DEL,
__DCB_CMD_ENUM_MAX,
DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1,

2
include/net/dcbnl.h
View File

@ -31,6 +31,7 @@ struct dcb_app_type {
u8 dcb_setapp(struct net_device *, struct dcb_app *);
u8 dcb_getapp(struct net_device *, struct dcb_app *);
int dcb_ieee_setapp(struct net_device *, struct dcb_app *);
int dcb_ieee_delapp(struct net_device *, struct dcb_app *);
int dcbnl_notify(struct net_device *dev, int event, int cmd, u32 seq, u32 pid);
@ -46,6 +47,7 @@ struct dcbnl_rtnl_ops {
int (*ieee_setpfc) (struct net_device *, struct ieee_pfc *);
int (*ieee_getapp) (struct net_device *, struct dcb_app *);
int (*ieee_setapp) (struct net_device *, struct dcb_app *);
int (*ieee_delapp) (struct net_device *, struct dcb_app *);
int (*ieee_peer_getets) (struct net_device *, struct ieee_ets *);
int (*ieee_peer_getpfc) (struct net_device *, struct ieee_pfc *);

90
net/dcb/dcbnl.c
View File

@ -1451,6 +1451,52 @@ static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb,
return err;
}
static int dcbnl_ieee_del(struct net_device *netdev, struct nlattr **tb,
u32 pid, u32 seq, u16 flags)
{
const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
int err = -EOPNOTSUPP;
if (!ops)
return -EOPNOTSUPP;
if (!tb[DCB_ATTR_IEEE])
return -EINVAL;
err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
if (err)
return err;
if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
struct nlattr *attr;
int rem;
nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
struct dcb_app *app_data;
if (nla_type(attr) != DCB_ATTR_IEEE_APP)
continue;
app_data = nla_data(attr);
if (ops->ieee_delapp)
err = ops->ieee_delapp(netdev, app_data);
else
err = dcb_ieee_delapp(netdev, app_data);
if (err)
goto err;
}
}
err:
dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_DEL, DCB_ATTR_IEEE,
pid, seq, flags);
dcbnl_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0);
return err;
}
/* DCBX configuration */
static int dcbnl_getdcbx(struct net_device *netdev, struct nlattr **tb,
u32 pid, u32 seq, u16 flags)
@ -1765,11 +1811,15 @@ static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
goto out;
case DCB_CMD_IEEE_SET:
ret = dcbnl_ieee_set(netdev, tb, pid, nlh->nlmsg_seq,
nlh->nlmsg_flags);
nlh->nlmsg_flags);
goto out;
case DCB_CMD_IEEE_GET:
ret = dcbnl_ieee_get(netdev, tb, pid, nlh->nlmsg_seq,
nlh->nlmsg_flags);
nlh->nlmsg_flags);
goto out;
case DCB_CMD_IEEE_DEL:
ret = dcbnl_ieee_del(netdev, tb, pid, nlh->nlmsg_seq,
nlh->nlmsg_flags);
goto out;
case DCB_CMD_GDCBX:
ret = dcbnl_getdcbx(netdev, tb, pid, nlh->nlmsg_seq,
@ -1924,6 +1974,42 @@ out:
}
EXPORT_SYMBOL(dcb_ieee_setapp);
/**
* dcb_ieee_delapp - delete IEEE dcb application data from list
*
* This removes a matching APP data from the APP list
*/
int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del)
{
struct dcb_app_type *itr;
struct dcb_app_type event;
int err = -ENOENT;
memcpy(&event.name, dev->name, sizeof(event.name));
memcpy(&event.app, del, sizeof(event.app));
spin_lock(&dcb_lock);
/* Search for existing match and remove it. */
list_for_each_entry(itr, &dcb_app_list, list) {
if (itr->app.selector == del->selector &&
itr->app.protocol == del->protocol &&
itr->app.priority == del->priority &&
(strncmp(itr->name, dev->name, IFNAMSIZ) == 0)) {
list_del(&itr->list);
kfree(itr);
err = 0;
goto out;
}
}
out:
spin_unlock(&dcb_lock);
if (!err)
call_dcbevent_notifiers(DCB_APP_EVENT, &event);
return err;
}
EXPORT_SYMBOL(dcb_ieee_delapp);
static void dcb_flushapp(void)
{
struct dcb_app_type *app;