static void hashtbl_empty_all(void)
{
int bkt;
struct ub_entry* e;
if (hash_empty(hashtable))
return;
// Need to walk the hash table to unset every struct hlist_node structure
hash_for_each_rcu(hashtable, bkt, e, hlist)
{
kfree_skb(e->skb);
hash_del_rcu(&e->hlist);
}
void __exit lttngprofile_exit(void)
{
struct process_val_t *process_val;
struct thread_val_t *thread_val;
int bkt;
if (lttngprofile_proc_dentry)
remove_proc_entry(LTTNGPROFILE_PROC, NULL);
probes_unregister();
rcu_read_lock();
hash_for_each_rcu(process_map, bkt, process_val, hlist) {
hash_del_rcu(&process_val->hlist);
call_rcu(&process_val->rcu, free_process_val_rcu);
}
/*
* Utility functions.
*/
static void process_unregister(pid_t tgid)
{
u32 hash;
struct process_key_t key;
struct process_val_t *val;
key.tgid = tgid;
hash = jhash(&key, sizeof(key), 0);
rcu_read_lock();
val = find_process(&key, hash);
if (val) {
hash_del_rcu(&val->hlist);
call_rcu(&val->rcu, free_process_val_rcu);
printk("lttngprofile unregister process %d\n", tgid);
}
rcu_read_unlock();
}
/**
* nfp_flower_del_offload() - Removes a flow from hardware.
* @app: Pointer to the APP handle
* @netdev: netdev structure.
* @flow: TC flower classifier offload structure
* @egress: Netdev is the egress dev.
*
* Removes a flow from the repeated hash structure and clears the
* action payload.
*
* Return: negative value on error, 0 if removed successfully.
*/
static int
nfp_flower_del_offload(struct nfp_app *app, struct net_device *netdev,
struct tc_cls_flower_offload *flow, bool egress)
{
struct nfp_port *port = nfp_port_from_netdev(netdev);
struct nfp_fl_payload *nfp_flow;
struct net_device *ingr_dev;
int err;
ingr_dev = egress ? NULL : netdev;
nfp_flow = nfp_flower_search_fl_table(app, flow->cookie, ingr_dev,
NFP_FL_STATS_CTX_DONT_CARE);
if (!nfp_flow)
return egress ? 0 : -ENOENT;
err = nfp_modify_flow_metadata(app, nfp_flow);
if (err)
goto err_free_flow;
if (nfp_flow->nfp_tun_ipv4_addr)
nfp_tunnel_del_ipv4_off(app, nfp_flow->nfp_tun_ipv4_addr);
err = nfp_flower_xmit_flow(netdev, nfp_flow,
NFP_FLOWER_CMSG_TYPE_FLOW_DEL);
if (err)
goto err_free_flow;
err_free_flow:
hash_del_rcu(&nfp_flow->link);
port->tc_offload_cnt--;
kfree(nfp_flow->action_data);
kfree(nfp_flow->mask_data);
kfree(nfp_flow->unmasked_data);
kfree_rcu(nfp_flow, rcu);
return err;
}
hash_for_each_rcu(thread_map, bkt, thread_val, hlist) {
hash_del_rcu(&thread_val->hlist);
call_rcu(&thread_val->rcu, free_thread_val_rcu);
}
/**
* ixgbe_ipsec_del_sa - clear out this specific SA
* @xs: pointer to transformer state struct
**/
static void ixgbe_ipsec_del_sa(struct xfrm_state *xs)
{
struct net_device *dev = xs->xso.dev;
struct ixgbe_adapter *adapter = netdev_priv(dev);
struct ixgbe_ipsec *ipsec = adapter->ipsec;
struct ixgbe_hw *hw = &adapter->hw;
u32 zerobuf[4] = {0, 0, 0, 0};
u16 sa_idx;
if (xs->xso.flags & XFRM_OFFLOAD_INBOUND) {
struct rx_sa *rsa;
u8 ipi;
sa_idx = xs->xso.offload_handle - IXGBE_IPSEC_BASE_RX_INDEX;
rsa = &ipsec->rx_tbl[sa_idx];
if (!rsa->used) {
netdev_err(dev, "Invalid Rx SA selected sa_idx=%d offload_handle=%lu\n",
sa_idx, xs->xso.offload_handle);
return;
}
ixgbe_ipsec_set_rx_sa(hw, sa_idx, 0, zerobuf, 0, 0, 0);
hash_del_rcu(&rsa->hlist);
/* if the IP table entry is referenced by only this SA,
* i.e. ref_cnt is only 1, clear the IP table entry as well
*/
ipi = rsa->iptbl_ind;
if (ipsec->ip_tbl[ipi].ref_cnt > 0) {
ipsec->ip_tbl[ipi].ref_cnt--;
if (!ipsec->ip_tbl[ipi].ref_cnt) {
memset(&ipsec->ip_tbl[ipi], 0,
sizeof(struct rx_ip_sa));
ixgbe_ipsec_set_rx_ip(hw, ipi, zerobuf);
}
}
memset(rsa, 0, sizeof(struct rx_sa));
ipsec->num_rx_sa--;
} else {
sa_idx = xs->xso.offload_handle - IXGBE_IPSEC_BASE_TX_INDEX;
if (!ipsec->tx_tbl[sa_idx].used) {
netdev_err(dev, "Invalid Tx SA selected sa_idx=%d offload_handle=%lu\n",
sa_idx, xs->xso.offload_handle);
return;
}
ixgbe_ipsec_set_tx_sa(hw, sa_idx, zerobuf, 0);
memset(&ipsec->tx_tbl[sa_idx], 0, sizeof(struct tx_sa));
ipsec->num_tx_sa--;
}
/* if there are no SAs left, stop the engine to save energy */
if (ipsec->num_rx_sa == 0 && ipsec->num_tx_sa == 0) {
adapter->flags2 &= ~IXGBE_FLAG2_IPSEC_ENABLED;
ixgbe_ipsec_stop_engine(adapter);
}
}
