From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3B85A347FED for ; Sat, 28 Feb 2026 18:14:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302482; cv=none; b=syeBDwFfXPqIQXYGd/5AOqNMC/Sy6+k4uSJDx0jHnt/9NVw3936s1J3+dD+l0uxY+IskxpEcDWmbbn52KofZTfA1UwIUyyVLJ+5Zs8d5mFuiDTp3ysYoIDeEiyBT92GevTOmNrZZaHDF+4zw7YFgjNAzVxNlkhx24iulRwLepXw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302482; c=relaxed/simple; bh=GqelLZskd55U/JbZzmr0Y1WJWONzaWHNH5YYYdGj1Vo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NaGeirj1bgfeyBptiP+kwUcQ78Xizea3Bq4VDP2OP9vvdJOgzgM3s6SLbDo65HJ7hx28CNaYcfVkt4LhWvIs8UhmkUDZnpKn0ljI1KDei19gZWKB2SyUL5RUNIfg3KpJD76PiE9hXIpp9g9HRHMWvATPUADtPdKKpE7IQW9XC5o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=paQTs+LY; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="paQTs+LY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 890A6C19423; Sat, 28 Feb 2026 18:14:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772302482; bh=GqelLZskd55U/JbZzmr0Y1WJWONzaWHNH5YYYdGj1Vo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=paQTs+LYylRSOCDEp8IUTBnf2bzUcieBF90qhUX4xtoGsfgpydIW+pjYe8ffOxPPn pZADHlyk+IJtzfy7zkFd256n19rTDIQa33pIKzLYI7UBVll6s/bRyscQBtUKEEC6yS CsJDBHpG3f6MWAve45yBXSC1ssiRSHJ/pQFKO8JYFmQ575ySI7baxkj+hI8uNIrx+e ZLRQHfmIJ8t+yqfHPw79DOqJlNOs74+zNuc5ZdIN8m+oodjjZYdFzieTZu0edbH1RT ksjoLPuZnGwaYYs+SfmoDCkWWl/kF5fnaVYFcOXnPnL6AQ1MUW2KRa1YdDVNsEutMp t8nCyXtupBt+w== From: Sasha Levin To: patches@lists.linux.dev Cc: Kuniyuki Iwashima , Simon Horman , "David S. Miller" , Sasha Levin Subject: [PATCH 6.1 229/232] ping: Convert hlist_nulls to plain hlist. Date: Sat, 28 Feb 2026 13:11:22 -0500 Message-ID: <20260228181127.1592657-229-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228181127.1592657-1-sashal@kernel.org> References: <20260228181127.1592657-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Kuniyuki Iwashima [ Upstream commit f1b5dfe63f6a9eb17948cbaee4da4b66f51ac794 ] Since introduced in commit c319b4d76b9e ("net: ipv4: add IPPROTO_ICMP socket kind"), ping socket does not use SLAB_TYPESAFE_BY_RCU nor check nulls marker in loops. Signed-off-by: Kuniyuki Iwashima Reviewed-by: Simon Horman Signed-off-by: David S. Miller Stable-dep-of: ad5dfde2a573 ("ping: annotate data-races in ping_lookup()") Signed-off-by: Sasha Levin --- net/ipv4/ping.c | 41 +++++++++++++++-------------------------- 1 file changed, 15 insertions(+), 26 deletions(-) diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c index cadf743ab4f52..aae5ad6303a97 100644 --- a/net/ipv4/ping.c +++ b/net/ipv4/ping.c @@ -49,13 +49,8 @@ #include #endif -#define ping_portaddr_for_each_entry(__sk, node, list) \ - hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node) -#define ping_portaddr_for_each_entry_rcu(__sk, node, list) \ - hlist_nulls_for_each_entry_rcu(__sk, node, list, sk_nulls_node) - struct ping_table { - struct hlist_nulls_head hash[PING_HTABLE_SIZE]; + struct hlist_head hash[PING_HTABLE_SIZE]; spinlock_t lock; }; @@ -74,17 +69,16 @@ static inline u32 ping_hashfn(const struct net *net, u32 num, u32 mask) } EXPORT_SYMBOL_GPL(ping_hash); -static inline struct hlist_nulls_head *ping_hashslot(struct ping_table *table, - struct net *net, unsigned int num) +static inline struct hlist_head *ping_hashslot(struct ping_table *table, + struct net *net, unsigned int num) { return &table->hash[ping_hashfn(net, num, PING_HTABLE_MASK)]; } int ping_get_port(struct sock *sk, unsigned short ident) { - struct hlist_nulls_node *node; - struct hlist_nulls_head *hlist; struct inet_sock *isk, *isk2; + struct hlist_head *hlist; struct sock *sk2 = NULL; isk = inet_sk(sk); @@ -98,7 +92,7 @@ int ping_get_port(struct sock *sk, unsigned short ident) result++; /* avoid zero */ hlist = ping_hashslot(&ping_table, sock_net(sk), result); - ping_portaddr_for_each_entry(sk2, node, hlist) { + sk_for_each(sk2, hlist) { isk2 = inet_sk(sk2); if (isk2->inet_num == result) @@ -115,7 +109,7 @@ int ping_get_port(struct sock *sk, unsigned short ident) goto fail; } else { hlist = ping_hashslot(&ping_table, sock_net(sk), ident); - ping_portaddr_for_each_entry(sk2, node, hlist) { + sk_for_each(sk2, hlist) { isk2 = inet_sk(sk2); /* BUG? Why is this reuse and not reuseaddr? ping.c @@ -133,9 +127,8 @@ int ping_get_port(struct sock *sk, unsigned short ident) isk->inet_num = ident; if (sk_unhashed(sk)) { pr_debug("was not hashed\n"); - sock_hold(sk); + sk_add_node_rcu(sk, hlist); sock_set_flag(sk, SOCK_RCU_FREE); - hlist_nulls_add_head_rcu(&sk->sk_nulls_node, hlist); sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1); } spin_unlock(&ping_table.lock); @@ -161,9 +154,7 @@ void ping_unhash(struct sock *sk) pr_debug("ping_unhash(isk=%p,isk->num=%u)\n", isk, isk->inet_num); spin_lock(&ping_table.lock); - if (sk_hashed(sk)) { - hlist_nulls_del_init_rcu(&sk->sk_nulls_node); - sock_put(sk); + if (sk_del_node_init_rcu(sk)) { isk->inet_num = 0; isk->inet_sport = 0; sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); @@ -175,10 +166,9 @@ EXPORT_SYMBOL_GPL(ping_unhash); /* Called under rcu_read_lock() */ static struct sock *ping_lookup(struct net *net, struct sk_buff *skb, u16 ident) { - struct hlist_nulls_head *hslot = ping_hashslot(&ping_table, net, ident); + struct hlist_head *hslot = ping_hashslot(&ping_table, net, ident); struct sock *sk = NULL; struct inet_sock *isk; - struct hlist_nulls_node *hnode; int dif, sdif; if (skb->protocol == htons(ETH_P_IP)) { @@ -197,7 +187,7 @@ static struct sock *ping_lookup(struct net *net, struct sk_buff *skb, u16 ident) return NULL; } - ping_portaddr_for_each_entry_rcu(sk, hnode, hslot) { + sk_for_each_rcu(sk, hslot) { isk = inet_sk(sk); pr_debug("iterate\n"); @@ -1043,15 +1033,14 @@ static struct sock *ping_get_first(struct seq_file *seq, int start) for (state->bucket = start; state->bucket < PING_HTABLE_SIZE; ++state->bucket) { - struct hlist_nulls_node *node; - struct hlist_nulls_head *hslot; + struct hlist_head *hslot; hslot = &ping_table.hash[state->bucket]; - if (hlist_nulls_empty(hslot)) + if (hlist_empty(hslot)) continue; - sk_nulls_for_each(sk, node, hslot) { + sk_for_each(sk, hslot) { if (net_eq(sock_net(sk), net) && sk->sk_family == state->family) goto found; @@ -1068,7 +1057,7 @@ static struct sock *ping_get_next(struct seq_file *seq, struct sock *sk) struct net *net = seq_file_net(seq); do { - sk = sk_nulls_next(sk); + sk = sk_next(sk); } while (sk && (!net_eq(sock_net(sk), net))); if (!sk) @@ -1204,6 +1193,6 @@ void __init ping_init(void) int i; for (i = 0; i < PING_HTABLE_SIZE; i++) - INIT_HLIST_NULLS_HEAD(&ping_table.hash[i], i); + INIT_HLIST_HEAD(&ping_table.hash[i]); spin_lock_init(&ping_table.lock); } -- 2.51.0