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| author | Ingo Molnar <mingo@kernel.org> | 2017-02-07 08:49:17 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-02-07 08:49:17 +0100 |
| commit | 87a8d03266a55f18f31fdb71c28a8dcffe39124d (patch) | |
| tree | ab337ca060871296a8dc5d47fcd45da9dcb17a3a /net/can/af_can.c | |
| parent | 696204faa6e8a318320ebb49d9fa69bc8275644d (diff) | |
| parent | d5adbfcd5f7bcc6fa58a41c5c5ada0e5c826ce2c (diff) | |
Merge tag 'v4.10-rc7' into efi/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/can/af_can.c')
| -rw-r--r-- | net/can/af_can.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/net/can/af_can.c b/net/can/af_can.c index 1108079d934f..5488e4a6ccd0 100644 --- a/net/can/af_can.c +++ b/net/can/af_can.c @@ -445,6 +445,7 @@ static struct hlist_head *find_rcv_list(canid_t *can_id, canid_t *mask, * @func: callback function on filter match * @data: returned parameter for callback function * @ident: string for calling module identification + * @sk: socket pointer (might be NULL) * * Description: * Invokes the callback function with the received sk_buff and the given @@ -468,7 +469,7 @@ static struct hlist_head *find_rcv_list(canid_t *can_id, canid_t *mask, */ int can_rx_register(struct net_device *dev, canid_t can_id, canid_t mask, void (*func)(struct sk_buff *, void *), void *data, - char *ident) + char *ident, struct sock *sk) { struct receiver *r; struct hlist_head *rl; @@ -496,6 +497,7 @@ int can_rx_register(struct net_device *dev, canid_t can_id, canid_t mask, r->func = func; r->data = data; r->ident = ident; + r->sk = sk; hlist_add_head_rcu(&r->list, rl); d->entries++; @@ -520,8 +522,11 @@ EXPORT_SYMBOL(can_rx_register); static void can_rx_delete_receiver(struct rcu_head *rp) { struct receiver *r = container_of(rp, struct receiver, rcu); + struct sock *sk = r->sk; kmem_cache_free(rcv_cache, r); + if (sk) + sock_put(sk); } /** @@ -596,8 +601,11 @@ void can_rx_unregister(struct net_device *dev, canid_t can_id, canid_t mask, spin_unlock(&can_rcvlists_lock); /* schedule the receiver item for deletion */ - if (r) + if (r) { + if (r->sk) + sock_hold(r->sk); call_rcu(&r->rcu, can_rx_delete_receiver); + } } EXPORT_SYMBOL(can_rx_unregister); |