From 94352d45092c23874532221b4d1e4721df9d63df Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 1 Mar 2017 16:35:08 -0300 Subject: net: Introduce sk_clone_lock() error path routine When handling problems in cloning a socket with the sk_clone_locked() function we need to perform several steps that were open coded in it and its callers, so introduce a routine to avoid this duplication: sk_free_unlock_clone(). Cc: Cong Wang Cc: Dmitry Vyukov Cc: Eric Dumazet Cc: Gerrit Renker Cc: Thomas Gleixner Link: http://lkml.kernel.org/n/net-ui6laqkotycunhtmqryl9bfx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: David S. Miller --- net/core/sock.c | 16 +++++++++++----- net/dccp/minisocks.c | 6 +----- 2 files changed, 12 insertions(+), 10 deletions(-) (limited to 'net') diff --git a/net/core/sock.c b/net/core/sock.c index e7d74940e863..f6fd79f33097 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1539,11 +1539,7 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority) is_charged = sk_filter_charge(newsk, filter); if (unlikely(!is_charged || xfrm_sk_clone_policy(newsk, sk))) { - /* It is still raw copy of parent, so invalidate - * destructor and make plain sk_free() */ - newsk->sk_destruct = NULL; - bh_unlock_sock(newsk); - sk_free(newsk); + sk_free_unlock_clone(newsk); newsk = NULL; goto out; } @@ -1592,6 +1588,16 @@ out: } EXPORT_SYMBOL_GPL(sk_clone_lock); +void sk_free_unlock_clone(struct sock *sk) +{ + /* It is still raw copy of parent, so invalidate + * destructor and make plain sk_free() */ + sk->sk_destruct = NULL; + bh_unlock_sock(sk); + sk_free(sk); +} +EXPORT_SYMBOL_GPL(sk_free_unlock_clone); + void sk_setup_caps(struct sock *sk, struct dst_entry *dst) { u32 max_segs = 1; diff --git a/net/dccp/minisocks.c b/net/dccp/minisocks.c index d20d948a98ed..e267e6f4c9a5 100644 --- a/net/dccp/minisocks.c +++ b/net/dccp/minisocks.c @@ -119,11 +119,7 @@ struct sock *dccp_create_openreq_child(const struct sock *sk, * Activate features: initialise CCIDs, sequence windows etc. */ if (dccp_feat_activate_values(newsk, &dreq->dreq_featneg)) { - /* It is still raw copy of parent, so invalidate - * destructor and make plain sk_free() */ - newsk->sk_destruct = NULL; - bh_unlock_sock(newsk); - sk_free(newsk); + sk_free_unlock_clone(newsk); return NULL; } dccp_init_xmit_timers(newsk); -- cgit v1.2.3