linux-stable.git/net/sctp, branch v4.7 Linux kernel stable tree sctp: load transport header after sk_filter 2016-07-19T05:46:52+00:00 Willem de Bruijn willemb@google.com 2016-07-16T21:33:15+00:00 c74bfbdba0e8d056e4ba579a666b5cdb8ec3cd35 Do not cache pointers into the skb linear segment across sk_filter. The function call can trigger pskb_expand_head. Signed-off-by: Willem de Bruijn <willemb@google.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Do not cache pointers into the skb linear segment across sk_filter.
The function call can trigger pskb_expand_head.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: diag: add missing declarations 2016-06-11T06:22:55+00:00 Ben Dooks ben.dooks@codethink.co.uk 2016-06-09T17:05:09+00:00 c3ec5e5ce9cea1f369a5a8ad69d6471680796bc6 The functions inet_diag_msg_common_fill and inet_diag_msg_attrs_fill seem to have been missed from the include/linux/inet_diag.h header file. Add them to fix the following warnings: net/ipv4/inet_diag.c:69:6: warning: symbol 'inet_diag_msg_common_fill' was not declared. Should it be static? net/ipv4/inet_diag.c:108:5: warning: symbol 'inet_diag_msg_attrs_fill' was not declared. Should it be static? Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: David S. Miller <davem@davemloft.net> 
The functions inet_diag_msg_common_fill and inet_diag_msg_attrs_fill
seem to have been missed from the include/linux/inet_diag.h header
file. Add them to fix the following warnings:

net/ipv4/inet_diag.c:69:6: warning: symbol 'inet_diag_msg_common_fill' was not declared. Should it be static?
net/ipv4/inet_diag.c:108:5: warning: symbol 'inet_diag_msg_attrs_fill' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
sctp: sctp_diag should dump sctp socket type 2016-05-31T18:59:06+00:00 Xin Long lucien.xin@gmail.com 2016-05-29T09:42:13+00:00 40eb90e9ccc3f96f937ea1db79d0f9cb61553ed5 Now we cannot distinguish that one sk is a udp or sctp style when we use ss to dump sctp_info. it's necessary to dump it as well. For sctp_diag, ss support is not officially available, thus there are no official users of this yet, so we can add this field in the middle of sctp_info without breaking user API. v1->v2: - move 'sctpi_s_type' field to the end of struct sctp_info, so that it won't cause incompatibility with applications already built. - add __reserved3 in sctp_info to make sure sctp_info is 8-byte alignment. Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Now we cannot distinguish that one sk is a udp or sctp style when
we use ss to dump sctp_info. it's necessary to dump it as well.

For sctp_diag, ss support is not officially available, thus there
are no official users of this yet, so we can add this field in the
middle of sctp_info without breaking user API.

v1->v2:
  - move 'sctpi_s_type' field to the end of struct sctp_info, so
    that it won't cause incompatibility with applications already
    built.
  - add __reserved3 in sctp_info to make sure sctp_info is 8-byte
    alignment.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
sctp: fix double EPs display in sctp_diag 2016-05-26T05:14:31+00:00 Xin Long lucien.xin@gmail.com 2016-05-25T19:09:23+00:00 bed187b540167eb10320f6a2177604421650772e We have this situation: that EP hash table, contains only the EPs that are listening, while the transports one, has the opposite. We have to traverse both to dump all. But when we traverse the transports one we will also get EPs that are in the EP hash if they are listening. In this case, the EP is dumped twice. We will fix it by checking if the endpoint that is in the endpoint hash table contains any ep->asoc in there, as it means we will also find it via transport hash, and thus we can/should skip it, depending on the filters used, like 'ss -l'. Still, we should NOT skip it if the user is listing only listening endpoints, because then we are not traversing the transport hash. so we have to check idiag_states there also. Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
We have this situation: that EP hash table, contains only the EPs
that are listening, while the transports one, has the opposite.
We have to traverse both to dump all.

But when we traverse the transports one we will also get EPs that are
in the EP hash if they are listening. In this case, the EP is dumped
twice.

We will fix it by checking if the endpoint that is in the endpoint
hash table contains any ep->asoc in there, as it means we will also
find it via transport hash, and thus we can/should skip it, depending
on the filters used, like 'ss -l'.

Still, we should NOT skip it if the user is listing only listening
endpoints, because then we are not traversing the transport hash.
so we have to check idiag_states there also.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
sctp: prepare for socket backlog behavior change 2016-05-02T21:02:26+00:00 Eric Dumazet edumazet@google.com 2016-04-29T21:16:51+00:00 860fbbc343bf05a71b31555579ff4878194be01b sctp_inq_push() will soon be called without BH being blocked when generic socket code flushes the socket backlog. It is very possible SCTP can be converted to not rely on BH, but this needs to be done by SCTP experts. Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
sctp_inq_push() will soon be called without BH being blocked
when generic socket code flushes the socket backlog.

It is very possible SCTP can be converted to not rely on BH,
but this needs to be done by SCTP experts.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
sctp: signal sk_data_ready earlier on data chunks reception 2016-05-02T01:06:10+00:00 Marcelo Ricardo Leitner marcelo.leitner@gmail.com 2016-04-29T17:17:08+00:00 0970f5b3665933f5f0d069607c78fb10bd918b62 Dave Miller pointed out that fb586f25300f ("sctp: delay calls to sk_data_ready() as much as possible") may insert latency specially if the receiving application is running on another CPU and that it would be better if we signalled as early as possible. This patch thus basically inverts the logic on fb586f25300f and signals it as early as possible, similar to what we had before. Fixes: fb586f25300f ("sctp: delay calls to sk_data_ready() as much as possible") Reported-by: Dave Miller <davem@davemloft.net> Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Dave Miller pointed out that fb586f25300f ("sctp: delay calls to
sk_data_ready() as much as possible") may insert latency specially if
the receiving application is running on another CPU and that it would be
better if we signalled as early as possible.

This patch thus basically inverts the logic on fb586f25300f and signals
it as early as possible, similar to what we had before.

Fixes: fb586f25300f ("sctp: delay calls to sk_data_ready() as much as possible")
Reported-by: Dave Miller <davem@davemloft.net>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: rename NET_{ADD|INC}_STATS_BH() 2016-04-28T02:48:24+00:00 Eric Dumazet edumazet@google.com 2016-04-27T23:44:39+00:00 02a1d6e7a6bb025a77da77012190e1efc1970f1c Rename NET_INC_STATS_BH() to __NET_INC_STATS() and NET_ADD_STATS_BH() to __NET_ADD_STATS() Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Rename NET_INC_STATS_BH() to __NET_INC_STATS()
and NET_ADD_STATS_BH() to __NET_ADD_STATS()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: rename ICMP6_INC_STATS_BH() 2016-04-28T02:48:24+00:00 Eric Dumazet edumazet@google.com 2016-04-27T23:44:36+00:00 a16292a0f0e0cef40ed51685dfde12b3002959b5 Rename ICMP6_INC_STATS_BH() to __ICMP6_INC_STATS() Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Rename ICMP6_INC_STATS_BH() to __ICMP6_INC_STATS()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: sctp: rename SCTP_INC_STATS_BH() 2016-04-28T02:48:23+00:00 Eric Dumazet edumazet@google.com 2016-04-27T23:44:34+00:00 08e3baef65e2e9481637a1e8fb06089ca70be707 Rename SCTP_INC_STATS_BH() to __SCTP_INC_STATS() Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Rename SCTP_INC_STATS_BH() to __SCTP_INC_STATS()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: rename ICMP_INC_STATS_BH() 2016-04-28T02:48:22+00:00 Eric Dumazet edumazet@google.com 2016-04-27T23:44:29+00:00 5d3848bc33b7d13fc97b5b6e0dccde2d0755bfd5 Rename ICMP_INC_STATS_BH() to __ICMP_INC_STATS() Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Rename ICMP_INC_STATS_BH() to __ICMP_INC_STATS()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>