caif: prepare support for namespaces
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>
diff --git a/net/caif/cfcnfg.c b/net/caif/cfcnfg.c
index 3f4f31f..e857d89 100644
--- a/net/caif/cfcnfg.c
+++ b/net/caif/cfcnfg.c
@@ -150,7 +150,7 @@
{
}
-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 @@
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 @@
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 @@
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 @@
[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, ¶m);
+ if (err)
+ goto unlock;
+
+ phy = cfcnfg_get_phyinfo_rcu(cfg, param.phyid);
if (!phy) {
err = -ENODEV;
goto unlock;
@@ -276,28 +360,29 @@
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, ¶m, 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 @@
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 @@
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 @@
}
layer_set_up(phy_layer, NULL);
-
-
if (phyinfo->phy_layer != frml_dn)
kfree(frml_dn);