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caif: prepare support for namespaces

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Use struct net to reference CAIF configuration object instead of static variables.
Refactor functions caif_connect_client, caif_disconnect_client and squach
files cfcnfg.c and caif_config_utils.

Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
sjur.brandeland@stericsson.com
2011-05-13 02:44:05 +00:00
committed by David S. Miller
parent b3ccfbe409
commit bee925db9a
8 changed files with 176 additions and 261 deletions
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146
net/caif/cfcnfg.c
View File

@@ -150,7 +150,7 @@ static void cfctrl_enum_resp(void)
{
}
struct dev_info *cfcnfg_get_phyid(struct cfcnfg *cnfg,
static struct dev_info *cfcnfg_get_phyid(struct cfcnfg *cnfg,
enum cfcnfg_phy_preference phy_pref)
{
/* Try to match with specified preference */
@@ -171,7 +171,7 @@ struct dev_info *cfcnfg_get_phyid(struct cfcnfg *cnfg,
return NULL;
}
int cfcnfg_get_id_from_ifi(struct cfcnfg *cnfg, int ifi)
static int cfcnfg_get_id_from_ifi(struct cfcnfg *cnfg, int ifi)
{
struct cfcnfg_phyinfo *phy;
@@ -181,11 +181,12 @@ int cfcnfg_get_id_from_ifi(struct cfcnfg *cnfg, int ifi)
return -ENODEV;
}
int cfcnfg_disconn_adapt_layer(struct cfcnfg *cfg, struct cflayer *adap_layer)
int caif_disconnect_client(struct net *net, struct cflayer *adap_layer)
{
u8 channel_id = 0;
int ret = 0;
struct cflayer *servl = NULL;
struct cfcnfg *cfg = get_cfcnfg(net);
caif_assert(adap_layer != NULL);
@@ -217,14 +218,7 @@ end:
return ret;
}
EXPORT_SYMBOL(cfcnfg_disconn_adapt_layer);
void cfcnfg_release_adap_layer(struct cflayer *adap_layer)
{
if (adap_layer->dn)
cfsrvl_put(adap_layer->dn);
}
EXPORT_SYMBOL(cfcnfg_release_adap_layer);
EXPORT_SYMBOL(caif_disconnect_client);
static void cfcnfg_linkdestroy_rsp(struct cflayer *layer, u8 channel_id)
{
@@ -238,19 +232,109 @@ static const int protohead[CFCTRL_SRV_MASK] = {
[CFCTRL_SRV_DBG] = 3,
};
int cfcnfg_add_adaptation_layer(struct cfcnfg *cnfg,
struct cfctrl_link_param *param,
struct cflayer *adap_layer,
int *ifindex,
static int caif_connect_req_to_link_param(struct cfcnfg *cnfg,
struct caif_connect_request *s,
struct cfctrl_link_param *l)
{
struct dev_info *dev_info;
enum cfcnfg_phy_preference pref;
int res;
memset(l, 0, sizeof(*l));
/* In caif protocol low value is high priority */
l->priority = CAIF_PRIO_MAX - s->priority + 1;
if (s->ifindex != 0) {
res = cfcnfg_get_id_from_ifi(cnfg, s->ifindex);
if (res < 0)
return res;
l->phyid = res;
} else {
switch (s->link_selector) {
case CAIF_LINK_HIGH_BANDW:
pref = CFPHYPREF_HIGH_BW;
break;
case CAIF_LINK_LOW_LATENCY:
pref = CFPHYPREF_LOW_LAT;
break;
default:
return -EINVAL;
}
dev_info = cfcnfg_get_phyid(cnfg, pref);
if (dev_info == NULL)
return -ENODEV;
l->phyid = dev_info->id;
}
switch (s->protocol) {
case CAIFPROTO_AT:
l->linktype = CFCTRL_SRV_VEI;
l->endpoint = (s->sockaddr.u.at.type >> 2) & 0x3;
l->chtype = s->sockaddr.u.at.type & 0x3;
break;
case CAIFPROTO_DATAGRAM:
l->linktype = CFCTRL_SRV_DATAGRAM;
l->chtype = 0x00;
l->u.datagram.connid = s->sockaddr.u.dgm.connection_id;
break;
case CAIFPROTO_DATAGRAM_LOOP:
l->linktype = CFCTRL_SRV_DATAGRAM;
l->chtype = 0x03;
l->endpoint = 0x00;
l->u.datagram.connid = s->sockaddr.u.dgm.connection_id;
break;
case CAIFPROTO_RFM:
l->linktype = CFCTRL_SRV_RFM;
l->u.datagram.connid = s->sockaddr.u.rfm.connection_id;
strncpy(l->u.rfm.volume, s->sockaddr.u.rfm.volume,
sizeof(l->u.rfm.volume)-1);
l->u.rfm.volume[sizeof(l->u.rfm.volume)-1] = 0;
break;
case CAIFPROTO_UTIL:
l->linktype = CFCTRL_SRV_UTIL;
l->endpoint = 0x00;
l->chtype = 0x00;
strncpy(l->u.utility.name, s->sockaddr.u.util.service,
sizeof(l->u.utility.name)-1);
l->u.utility.name[sizeof(l->u.utility.name)-1] = 0;
caif_assert(sizeof(l->u.utility.name) > 10);
l->u.utility.paramlen = s->param.size;
if (l->u.utility.paramlen > sizeof(l->u.utility.params))
l->u.utility.paramlen = sizeof(l->u.utility.params);
memcpy(l->u.utility.params, s->param.data,
l->u.utility.paramlen);
break;
case CAIFPROTO_DEBUG:
l->linktype = CFCTRL_SRV_DBG;
l->endpoint = s->sockaddr.u.dbg.service;
l->chtype = s->sockaddr.u.dbg.type;
break;
default:
return -EINVAL;
}
return 0;
}
int caif_connect_client(struct net *net, struct caif_connect_request *conn_req,
struct cflayer *adap_layer, int *ifindex,
int *proto_head,
int *proto_tail)
{
struct cflayer *frml;
struct cfcnfg_phyinfo *phy;
int err;
struct cfctrl_link_param param;
struct cfcnfg *cfg = get_cfcnfg(net);
caif_assert(cfg != NULL);
rcu_read_lock();
phy = cfcnfg_get_phyinfo_rcu(cnfg, param->phyid);
err = caif_connect_req_to_link_param(cfg, conn_req, &param);
if (err)
goto unlock;
phy = cfcnfg_get_phyinfo_rcu(cfg, param.phyid);
if (!phy) {
err = -ENODEV;
goto unlock;
@@ -276,28 +360,29 @@ int cfcnfg_add_adaptation_layer(struct cfcnfg *cnfg,
pr_err("Specified PHY type does not exist!\n");
goto unlock;
}
caif_assert(param->phyid == phy->id);
caif_assert(param.phyid == phy->id);
caif_assert(phy->frm_layer->id ==
param->phyid);
param.phyid);
caif_assert(phy->phy_layer->id ==
param->phyid);
param.phyid);
*ifindex = phy->ifindex;
*proto_tail = 2;
*proto_head =
protohead[param->linktype] + (phy->use_stx ? 1 : 0);
protohead[param.linktype] + (phy->use_stx ? 1 : 0);
rcu_read_unlock();
/* FIXME: ENUMERATE INITIALLY WHEN ACTIVATING PHYSICAL INTERFACE */
cfctrl_enum_req(cnfg->ctrl, param->phyid);
return cfctrl_linkup_request(cnfg->ctrl, param, adap_layer);
cfctrl_enum_req(cfg->ctrl, param.phyid);
return cfctrl_linkup_request(cfg->ctrl, &param, adap_layer);
unlock:
rcu_read_unlock();
return err;
}
EXPORT_SYMBOL(cfcnfg_add_adaptation_layer);
EXPORT_SYMBOL(caif_connect_client);
static void cfcnfg_reject_rsp(struct cflayer *layer, u8 channel_id,
struct cflayer *adapt_layer)
@@ -389,7 +474,7 @@ unlock:
void
cfcnfg_add_phy_layer(struct cfcnfg *cnfg, enum cfcnfg_phy_type phy_type,
struct net_device *dev, struct cflayer *phy_layer,
u16 *phy_id, enum cfcnfg_phy_preference pref,
enum cfcnfg_phy_preference pref,
bool fcs, bool stx)
{
struct cflayer *frml;
@@ -512,23 +597,26 @@ int cfcnfg_del_phy_layer(struct cfcnfg *cnfg, struct cflayer *phy_layer)
phyid = phy_layer->id;
phyinfo = cfcnfg_get_phyinfo_rcu(cnfg, phyid);
if (phyinfo == NULL)
if (phyinfo == NULL) {
mutex_unlock(&cnfg->lock);
return 0;
}
caif_assert(phyid == phyinfo->id);
caif_assert(phy_layer == phyinfo->phy_layer);
caif_assert(phy_layer->id == phyid);
caif_assert(phyinfo->frm_layer->id == phyid);
list_del_rcu(&phyinfo->node);
synchronize_rcu();
/* Fail if reference count is not zero */
if (cffrml_refcnt_read(phyinfo->frm_layer) != 0) {
pr_info("Wait for device inuse\n");
list_add_rcu(&phyinfo->node, &cnfg->phys);
mutex_unlock(&cnfg->lock);
return -EAGAIN;
}
list_del_rcu(&phyinfo->node);
synchronize_rcu();
frml = phyinfo->frm_layer;
frml_dn = frml->dn;
cffrml_set_uplayer(frml, NULL);
@@ -539,8 +627,6 @@ int cfcnfg_del_phy_layer(struct cfcnfg *cnfg, struct cflayer *phy_layer)
}
layer_set_up(phy_layer, NULL);
if (phyinfo->phy_layer != frml_dn)
kfree(frml_dn);