From: "David S. Miller" <davem@davemloft.net>
To: netdev@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Subject: [PATCH 24/51] l2tp: Stop using NLA_PUT*().
Date: Sun, 1 Apr 2012 22:58:14 -0400 [thread overview]
Message-ID: <1333335521-1348-25-git-send-email-davem@davemloft.net> (raw)
In-Reply-To: <1333335521-1348-1-git-send-email-davem@davemloft.net>
From: "David S. Miller" <davem@davemloft.net>
These macros contain a hidden goto, and are thus extremely error
prone and make code hard to audit.
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/l2tp/l2tp_netlink.c | 114 ++++++++++++++++++++++++++--------------------
1 files changed, 64 insertions(+), 50 deletions(-)
diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c
index 93a41a0..bc8c334 100644
--- a/net/l2tp/l2tp_netlink.c
+++ b/net/l2tp/l2tp_netlink.c
@@ -231,24 +231,28 @@ static int l2tp_nl_tunnel_send(struct sk_buff *skb, u32 pid, u32 seq, int flags,
if (IS_ERR(hdr))
return PTR_ERR(hdr);
- NLA_PUT_U8(skb, L2TP_ATTR_PROTO_VERSION, tunnel->version);
- NLA_PUT_U32(skb, L2TP_ATTR_CONN_ID, tunnel->tunnel_id);
- NLA_PUT_U32(skb, L2TP_ATTR_PEER_CONN_ID, tunnel->peer_tunnel_id);
- NLA_PUT_U32(skb, L2TP_ATTR_DEBUG, tunnel->debug);
- NLA_PUT_U16(skb, L2TP_ATTR_ENCAP_TYPE, tunnel->encap);
+ if (nla_put_u8(skb, L2TP_ATTR_PROTO_VERSION, tunnel->version) ||
+ nla_put_u32(skb, L2TP_ATTR_CONN_ID, tunnel->tunnel_id) ||
+ nla_put_u32(skb, L2TP_ATTR_PEER_CONN_ID, tunnel->peer_tunnel_id) ||
+ nla_put_u32(skb, L2TP_ATTR_DEBUG, tunnel->debug) ||
+ nla_put_u16(skb, L2TP_ATTR_ENCAP_TYPE, tunnel->encap))
+ goto nla_put_failure;
nest = nla_nest_start(skb, L2TP_ATTR_STATS);
if (nest == NULL)
goto nla_put_failure;
- NLA_PUT_U64(skb, L2TP_ATTR_TX_PACKETS, tunnel->stats.tx_packets);
- NLA_PUT_U64(skb, L2TP_ATTR_TX_BYTES, tunnel->stats.tx_bytes);
- NLA_PUT_U64(skb, L2TP_ATTR_TX_ERRORS, tunnel->stats.tx_errors);
- NLA_PUT_U64(skb, L2TP_ATTR_RX_PACKETS, tunnel->stats.rx_packets);
- NLA_PUT_U64(skb, L2TP_ATTR_RX_BYTES, tunnel->stats.rx_bytes);
- NLA_PUT_U64(skb, L2TP_ATTR_RX_SEQ_DISCARDS, tunnel->stats.rx_seq_discards);
- NLA_PUT_U64(skb, L2TP_ATTR_RX_OOS_PACKETS, tunnel->stats.rx_oos_packets);
- NLA_PUT_U64(skb, L2TP_ATTR_RX_ERRORS, tunnel->stats.rx_errors);
+ if (nla_put_u64(skb, L2TP_ATTR_TX_PACKETS, tunnel->stats.tx_packets) ||
+ nla_put_u64(skb, L2TP_ATTR_TX_BYTES, tunnel->stats.tx_bytes) ||
+ nla_put_u64(skb, L2TP_ATTR_TX_ERRORS, tunnel->stats.tx_errors) ||
+ nla_put_u64(skb, L2TP_ATTR_RX_PACKETS, tunnel->stats.rx_packets) ||
+ nla_put_u64(skb, L2TP_ATTR_RX_BYTES, tunnel->stats.rx_bytes) ||
+ nla_put_u64(skb, L2TP_ATTR_RX_SEQ_DISCARDS,
+ tunnel->stats.rx_seq_discards) ||
+ nla_put_u64(skb, L2TP_ATTR_RX_OOS_PACKETS,
+ tunnel->stats.rx_oos_packets) ||
+ nla_put_u64(skb, L2TP_ATTR_RX_ERRORS, tunnel->stats.rx_errors))
+ goto nla_put_failure;
nla_nest_end(skb, nest);
sk = tunnel->sock;
@@ -259,13 +263,16 @@ static int l2tp_nl_tunnel_send(struct sk_buff *skb, u32 pid, u32 seq, int flags,
switch (tunnel->encap) {
case L2TP_ENCAPTYPE_UDP:
- NLA_PUT_U16(skb, L2TP_ATTR_UDP_SPORT, ntohs(inet->inet_sport));
- NLA_PUT_U16(skb, L2TP_ATTR_UDP_DPORT, ntohs(inet->inet_dport));
- NLA_PUT_U8(skb, L2TP_ATTR_UDP_CSUM, (sk->sk_no_check != UDP_CSUM_NOXMIT));
+ if (nla_put_u16(skb, L2TP_ATTR_UDP_SPORT, ntohs(inet->inet_sport)) ||
+ nla_put_u16(skb, L2TP_ATTR_UDP_DPORT, ntohs(inet->inet_dport)) ||
+ nla_put_u8(skb, L2TP_ATTR_UDP_CSUM,
+ (sk->sk_no_check != UDP_CSUM_NOXMIT)))
+ goto nla_put_failure;
/* NOBREAK */
case L2TP_ENCAPTYPE_IP:
- NLA_PUT_BE32(skb, L2TP_ATTR_IP_SADDR, inet->inet_saddr);
- NLA_PUT_BE32(skb, L2TP_ATTR_IP_DADDR, inet->inet_daddr);
+ if (nla_put_be32(skb, L2TP_ATTR_IP_SADDR, inet->inet_saddr) ||
+ nla_put_be32(skb, L2TP_ATTR_IP_DADDR, inet->inet_daddr))
+ goto nla_put_failure;
break;
}
@@ -563,43 +570,50 @@ static int l2tp_nl_session_send(struct sk_buff *skb, u32 pid, u32 seq, int flags
if (IS_ERR(hdr))
return PTR_ERR(hdr);
- NLA_PUT_U32(skb, L2TP_ATTR_CONN_ID, tunnel->tunnel_id);
- NLA_PUT_U32(skb, L2TP_ATTR_SESSION_ID, session->session_id);
- NLA_PUT_U32(skb, L2TP_ATTR_PEER_CONN_ID, tunnel->peer_tunnel_id);
- NLA_PUT_U32(skb, L2TP_ATTR_PEER_SESSION_ID, session->peer_session_id);
- NLA_PUT_U32(skb, L2TP_ATTR_DEBUG, session->debug);
- NLA_PUT_U16(skb, L2TP_ATTR_PW_TYPE, session->pwtype);
- NLA_PUT_U16(skb, L2TP_ATTR_MTU, session->mtu);
- if (session->mru)
- NLA_PUT_U16(skb, L2TP_ATTR_MRU, session->mru);
-
- if (session->ifname && session->ifname[0])
- NLA_PUT_STRING(skb, L2TP_ATTR_IFNAME, session->ifname);
- if (session->cookie_len)
- NLA_PUT(skb, L2TP_ATTR_COOKIE, session->cookie_len, &session->cookie[0]);
- if (session->peer_cookie_len)
- NLA_PUT(skb, L2TP_ATTR_PEER_COOKIE, session->peer_cookie_len, &session->peer_cookie[0]);
- NLA_PUT_U8(skb, L2TP_ATTR_RECV_SEQ, session->recv_seq);
- NLA_PUT_U8(skb, L2TP_ATTR_SEND_SEQ, session->send_seq);
- NLA_PUT_U8(skb, L2TP_ATTR_LNS_MODE, session->lns_mode);
+ if (nla_put_u32(skb, L2TP_ATTR_CONN_ID, tunnel->tunnel_id) ||
+ nla_put_u32(skb, L2TP_ATTR_SESSION_ID, session->session_id) ||
+ nla_put_u32(skb, L2TP_ATTR_PEER_CONN_ID, tunnel->peer_tunnel_id) ||
+ nla_put_u32(skb, L2TP_ATTR_PEER_SESSION_ID,
+ session->peer_session_id) ||
+ nla_put_u32(skb, L2TP_ATTR_DEBUG, session->debug) ||
+ nla_put_u16(skb, L2TP_ATTR_PW_TYPE, session->pwtype) ||
+ nla_put_u16(skb, L2TP_ATTR_MTU, session->mtu) ||
+ (session->mru &&
+ nla_put_u16(skb, L2TP_ATTR_MRU, session->mru)))
+ goto nla_put_failure;
+
+ if ((session->ifname && session->ifname[0] &&
+ nla_put_string(skb, L2TP_ATTR_IFNAME, session->ifname)) ||
+ (session->cookie_len &&
+ nla_put(skb, L2TP_ATTR_COOKIE, session->cookie_len,
+ &session->cookie[0])) ||
+ (session->peer_cookie_len &&
+ nla_put(skb, L2TP_ATTR_PEER_COOKIE, session->peer_cookie_len,
+ &session->peer_cookie[0])) ||
+ nla_put_u8(skb, L2TP_ATTR_RECV_SEQ, session->recv_seq) ||
+ nla_put_u8(skb, L2TP_ATTR_SEND_SEQ, session->send_seq) ||
+ nla_put_u8(skb, L2TP_ATTR_LNS_MODE, session->lns_mode) ||
#ifdef CONFIG_XFRM
- if ((sk) && (sk->sk_policy[0] || sk->sk_policy[1]))
- NLA_PUT_U8(skb, L2TP_ATTR_USING_IPSEC, 1);
+ (((sk) && (sk->sk_policy[0] || sk->sk_policy[1])) &&
+ nla_put_u8(skb, L2TP_ATTR_USING_IPSEC, 1)) ||
#endif
- if (session->reorder_timeout)
- NLA_PUT_MSECS(skb, L2TP_ATTR_RECV_TIMEOUT, session->reorder_timeout);
-
+ (session->reorder_timeout &&
+ nla_put_msecs(skb, L2TP_ATTR_RECV_TIMEOUT, session->reorder_timeout)))
+ goto nla_put_failure;
nest = nla_nest_start(skb, L2TP_ATTR_STATS);
if (nest == NULL)
goto nla_put_failure;
- NLA_PUT_U64(skb, L2TP_ATTR_TX_PACKETS, session->stats.tx_packets);
- NLA_PUT_U64(skb, L2TP_ATTR_TX_BYTES, session->stats.tx_bytes);
- NLA_PUT_U64(skb, L2TP_ATTR_TX_ERRORS, session->stats.tx_errors);
- NLA_PUT_U64(skb, L2TP_ATTR_RX_PACKETS, session->stats.rx_packets);
- NLA_PUT_U64(skb, L2TP_ATTR_RX_BYTES, session->stats.rx_bytes);
- NLA_PUT_U64(skb, L2TP_ATTR_RX_SEQ_DISCARDS, session->stats.rx_seq_discards);
- NLA_PUT_U64(skb, L2TP_ATTR_RX_OOS_PACKETS, session->stats.rx_oos_packets);
- NLA_PUT_U64(skb, L2TP_ATTR_RX_ERRORS, session->stats.rx_errors);
+ if (nla_put_u64(skb, L2TP_ATTR_TX_PACKETS, session->stats.tx_packets) ||
+ nla_put_u64(skb, L2TP_ATTR_TX_BYTES, session->stats.tx_bytes) ||
+ nla_put_u64(skb, L2TP_ATTR_TX_ERRORS, session->stats.tx_errors) ||
+ nla_put_u64(skb, L2TP_ATTR_RX_PACKETS, session->stats.rx_packets) ||
+ nla_put_u64(skb, L2TP_ATTR_RX_BYTES, session->stats.rx_bytes) ||
+ nla_put_u64(skb, L2TP_ATTR_RX_SEQ_DISCARDS,
+ session->stats.rx_seq_discards) ||
+ nla_put_u64(skb, L2TP_ATTR_RX_OOS_PACKETS,
+ session->stats.rx_oos_packets) ||
+ nla_put_u64(skb, L2TP_ATTR_RX_ERRORS, session->stats.rx_errors))
+ goto nla_put_failure;
nla_nest_end(skb, nest);
return genlmsg_end(skb, hdr);
--
1.7.7.6
next prev parent reply other threads:[~2012-04-02 2:59 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-02 2:57 [PATCH 00/51] Get rid of NLA_PUT*() David S. Miller
2012-04-02 2:57 ` [PATCH 01/51] xfrm_user: Stop using NLA_PUT*() David S. Miller
2012-04-02 2:57 ` [PATCH 02/51] wireless: " David S. Miller
2012-04-02 2:57 ` [PATCH 03/51] pkt_sched: " David S. Miller
2012-04-02 2:57 ` [PATCH 04/51] phonet: " David S. Miller
2012-04-02 2:57 ` [PATCH 05/51] netlink: Add nla_put_be{16,32,64}() helpers David S. Miller
2012-04-02 2:57 ` [PATCH 06/51] openvswitch: Stop using NLA_PUT*() David S. Miller
2012-04-02 2:57 ` [PATCH 07/51] nfc: " David S. Miller
2012-04-02 2:57 ` [PATCH 08/51] genetlink: " David S. Miller
2012-04-02 2:57 ` [PATCH 09/51] nfnetlink_queue: " David S. Miller
2012-04-02 2:58 ` [PATCH 10/51] nfnetlink_log: " David S. Miller
2012-04-02 2:58 ` [PATCH 11/51] nfnetlink_cttimeout: " David S. Miller
2012-04-02 2:58 ` [PATCH 12/51] nfnetlink_acct: " David S. Miller
2012-04-02 2:58 ` [PATCH 13/51] nf_conntrack_proto_udp{,lite}: " David S. Miller
2012-04-02 2:58 ` [PATCH 14/51] nf_conntrack_proto_tcp: " David S. Miller
2012-04-02 2:58 ` [PATCH 15/51] nf_conntrack_proto_sctp: " David S. Miller
2012-04-02 2:58 ` [PATCH 16/51] nf_conntrack_proto_gre: " David S. Miller
2012-04-02 2:58 ` [PATCH 17/51] nf_conntrack_proto_generic: " David S. Miller
2012-04-02 2:58 ` [PATCH 18/51] nf_conntrack_proto_dccp: " David S. Miller
2012-04-02 2:58 ` [PATCH 19/51] nf_conntrack_netlink: " David S. Miller
2012-04-02 2:58 ` [PATCH 20/51] nf_conntrack_core: " David S. Miller
2012-04-02 2:58 ` [PATCH 21/51] ipvs: " David S. Miller
2012-04-02 5:01 ` Simon Horman
2012-04-02 5:03 ` David Miller
2012-04-02 6:22 ` Simon Horman
2012-04-02 2:58 ` [PATCH 22/51] netlink: Add nla_put_net{16,32,64}() helpers David S. Miller
2012-04-02 2:58 ` [PATCH 23/51] ipset: Stop using NLA_PUT*() David S. Miller
2012-04-02 2:58 ` David S. Miller [this message]
2012-04-02 2:58 ` [PATCH 25/51] dcbnl: " David S. Miller
2012-04-02 2:58 ` [PATCH 26/51] neighbour: " David S. Miller
2012-04-02 2:58 ` [PATCH 27/51] rtnetlink: " David S. Miller
2012-04-02 2:58 ` [PATCH 28/51] netlink: Add nla_put_le{16,32,64}() helpers David S. Miller
2012-04-02 2:58 ` [PATCH 29/51] decnet: Stop using NLA_PUT*() David S. Miller
2012-04-02 2:58 ` [PATCH 30/51] crypto: " David S. Miller
2012-04-02 2:58 ` [PATCH 31/51] infiniband: " David S. Miller
2012-04-02 2:58 ` [PATCH 32/51] can: " David S. Miller
2012-04-02 2:58 ` [PATCH 33/51] enic: " David S. Miller
2012-04-02 2:58 ` [PATCH 34/51] macvlan: " David S. Miller
2012-04-02 2:58 ` [PATCH 35/51] team: " David S. Miller
2012-04-02 2:58 ` [PATCH 36/51] ipv6: " David S. Miller
2012-04-02 2:58 ` [PATCH 37/51] netfilter: " David S. Miller
2012-04-02 2:58 ` [PATCH 38/51] ipv4: " David S. Miller
2012-04-02 2:58 ` [PATCH 39/51] netfilter: " David S. Miller
2012-04-02 2:58 ` [PATCH 40/51] ieee802154: " David S. Miller
2012-04-02 2:58 ` [PATCH 41/51] fib_rules: " David S. Miller
2012-04-02 2:58 ` [PATCH 42/51] gen_stats: " David S. Miller
2012-04-02 2:58 ` [PATCH 43/51] caif: " David S. Miller
2012-04-02 2:58 ` [PATCH 44/51] bridge: " David S. Miller
2012-04-02 2:58 ` [PATCH 45/51] vlan: " David S. Miller
2012-04-02 2:58 ` [PATCH 46/51] ath6kl: " David S. Miller
2012-04-02 2:58 ` [PATCH 47/51] iwlwifi: " David S. Miller
2012-04-02 2:58 ` [PATCH 48/51] mac80211_hwsim: " David S. Miller
2012-04-02 2:58 ` [PATCH 49/51] wl12xx: " David S. Miller
2012-04-02 2:58 ` [PATCH 50/51] xfrm: " David S. Miller
2012-04-02 2:58 ` [PATCH 51/51] netlink: Delete all NLA_PUT*() macros David S. Miller
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