sctp: alloc stream info when initializing asoc

When sending a msg without asoc established, sctp will send INIT packet
first and then enqueue chunks.

Before receiving INIT_ACK, stream info is not y

sctp: alloc stream info when initializing asoc

When sending a msg without asoc established, sctp will send INIT packet
first and then enqueue chunks.

Before receiving INIT_ACK, stream info is not yet alloced. But enqueuing
chunks needs to access stream info, like out stream state and out stream
cnt.

This patch is to fix it by allocing out stream info when initializing an
asoc, allocing in stream and re-allocing out stream when processing init.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Merge tag 'doc-4.11-images' of git://git.lwn.net/linux into drm-misc-next

Pointer for Markus's image conversion work.

We need this so we can merge all the pretty drm graphs for 4.12.

Signed-off-by

Merge tag 'doc-4.11-images' of git://git.lwn.net/linux into drm-misc-next

Pointer for Markus's image conversion work.

We need this so we can merge all the pretty drm graphs for 4.12.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

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Merge branch 'sctp-rx-side-stream-reconf-asoc-reset-and-add-streams-and-response'

Xin Long says:

====================
sctp: add receiver-side procedures for stream reconf asoc reset and add streams

Merge branch 'sctp-rx-side-stream-reconf-asoc-reset-and-add-streams-and-response'

Xin Long says:

====================
sctp: add receiver-side procedures for stream reconf asoc reset and add streams and response

Patch 2/7, 4/7, 5/7, 6/7 are to implement the process of asoc reset request,
add streams requests and all kinds of responses.

Patch 1/7 and 3/7 are ahead of 2/7 and 4/7 to add two event notification
for asoc reset and add streams.

Patch 7/7 is the last patch for implementing rfc6525 sctp stream reconf
to add sysctl and sockopt interface for users to enable sctp stream reconf.

After this patchset, sctp stream reconf will be able to work as rfc6525.

v1->v2:
- put these into a smaller group.
- rename the titles of the commits and improve some changelogs.
- improve sctp_chunk_lookup_strreset_param and reuse it in patch 4/7.
- process addstrm outreq as the ack of in addstrm inreq if strreset_chunk
is not NULL in patch 4/7.
- remove the stream alloc when sending addstrm inreq, and the process in
peer will response it by sending a addstrm out request back in patch 5/7.
- adjust the process of addstrm in resp to fit in the codes that only alloc
streams through addstrm outreq in patch 6/7.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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sctp: implement receiver-side procedures for the Reconf Response Parameter

This patch is to implement Receiver-Side Procedures for the
Re-configuration Response Parameter in rfc6525 section 5.2.7.

sctp: implement receiver-side procedures for the Reconf Response Parameter

This patch is to implement Receiver-Side Procedures for the
Re-configuration Response Parameter in rfc6525 section 5.2.7.

sctp_process_strreset_resp would process the response for any
kind of reconf request, and the stream reconf is applied only
when the response result is success.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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sctp: implement receiver-side procedures for the Add Incoming Streams Request Parameter

This patch is to implement Receiver-Side Procedures for the Add Incoming
Streams Request Parameter described i

sctp: implement receiver-side procedures for the Add Incoming Streams Request Parameter

This patch is to implement Receiver-Side Procedures for the Add Incoming
Streams Request Parameter described in rfc6525 section 5.2.6.

It is also to fix that it shouldn't have add streams when sending addstrm
in request, as the process in peer will handle it by sending a addstrm out
request back.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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sctp: implement receiver-side procedures for the Add Outgoing Streams Request Parameter

This patch is to add Receiver-Side Procedures for the Add Outgoing
Streams Request Parameter described in sect

sctp: implement receiver-side procedures for the Add Outgoing Streams Request Parameter

This patch is to add Receiver-Side Procedures for the Add Outgoing
Streams Request Parameter described in section 5.2.5.

It is also to improve sctp_chunk_lookup_strreset_param, so that it
can be used for processing addstrm_out request.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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sctp: implement receiver-side procedures for the SSN/TSN Reset Request Parameter

This patch is to implement Receiver-Side Procedures for the SSN/TSN
Reset Request Parameter described in rfc6525 sect

sctp: implement receiver-side procedures for the SSN/TSN Reset Request Parameter

This patch is to implement Receiver-Side Procedures for the SSN/TSN
Reset Request Parameter described in rfc6525 section 6.2.4.

The process is kind of complicate, it's wonth having some comments
from section 6.2.4 in the codes.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Merge remote-tracking branch 'airlied/drm-next' into drm-intel-next-queued

Backmerge drm-next to get at all the good stuff in drm-misc. We need
that because:

- drm_connector_list_iter conversion fo

Merge remote-tracking branch 'airlied/drm-next' into drm-intel-next-queued

Backmerge drm-next to get at all the good stuff in drm-misc. We need
that because:

- drm_connector_list_iter conversion for i915 needs the core patches.
- Maarten's patches to use the new atomic state iterators also need
the core patches.
- We need the new link status property to complete the DP retraining
work, merging through 2 branches wasn't a good idea and we had to
partially backtrack.
- Chris needs reservation_object_trylock and we want to roll out
kref_read everywhere.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

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Merge tag 'v4.11-rc1' into docs-next

Linux 4.11-rc1

Merge tag 'v4.11-rc1' into omap-for-v4.11/fixes

Linux 4.11-rc1

Merge tag 'v4.11-rc1' into patchwork

Linux 4.11-rc1

* tag 'v4.11-rc1': (10730 commits)
Linux 4.11-rc1
strparser: destroy workqueue on module exit
Documentation/sphinx: fix primary_domain conf

Merge tag 'v4.11-rc1' into patchwork

Linux 4.11-rc1

* tag 'v4.11-rc1': (10730 commits)
Linux 4.11-rc1
strparser: destroy workqueue on module exit
Documentation/sphinx: fix primary_domain configuration
docs: Fix htmldocs build failure
doc/ko_KR/memory-barriers: Update control-dependencies section
pcieaer doc: update the link
Documentation: Update path to sysrq.txt
sfc: fix IPID endianness in TSOv2
sfc: avoid max() in array size
rds: remove unnecessary returned value check
rxrpc: Fix potential NULL-pointer exception
nfp: correct DMA direction in XDP DMA sync
nfp: don't tell FW about the reserved buffer space
net: ethernet: bgmac: mac address change bug
net: ethernet: bgmac: init sequence bug
xen-netback: don't vfree() queues under spinlock
xen-netback: keep a local pointer for vif in backend_disconnect()
netfilter: nf_tables: don't call nfnetlink_set_err() if nfnetlink_send() fails
netfilter: nft_set_rbtree: incorrect assumption on lower interval lookups
netfilter: nf_conntrack_sip: fix wrong memory initialisation
...

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Merge branch 'linus' into WIP.x86/boot, to fix up conflicts and to pick up updates

Conflicts:
arch/x86/xen/setup.c

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:
"Highlights:

1) Support TX_RING in AF_PACKET TPACKET_V3 mode, from Sowmini
Va

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:
"Highlights:

1) Support TX_RING in AF_PACKET TPACKET_V3 mode, from Sowmini
Varadhan.

2) Simplify classifier state on sk_buff in order to shrink it a bit.
From Willem de Bruijn.

3) Introduce SIPHASH and it's usage for secure sequence numbers and
syncookies. From Jason A. Donenfeld.

4) Reduce CPU usage for ICMP replies we are going to limit or
suppress, from Jesper Dangaard Brouer.

5) Introduce Shared Memory Communications socket layer, from Ursula
Braun.

6) Add RACK loss detection and allow it to actually trigger fast
recovery instead of just assisting after other algorithms have
triggered it. From Yuchung Cheng.

7) Add xmit_more and BQL support to mvneta driver, from Simon Guinot.

8) skb_cow_data avoidance in esp4 and esp6, from Steffen Klassert.

9) Export MPLS packet stats via netlink, from Robert Shearman.

10) Significantly improve inet port bind conflict handling, especially
when an application is restarted and changes it's setting of
reuseport. From Josef Bacik.

11) Implement TX batching in vhost_net, from Jason Wang.

12) Extend the dummy device so that VF (virtual function) features,
such as configuration, can be more easily tested. From Phil
Sutter.

13) Avoid two atomic ops per page on x86 in bnx2x driver, from Eric
Dumazet.

14) Add new bpf MAP, implementing a longest prefix match trie. From
Daniel Mack.

15) Packet sample offloading support in mlxsw driver, from Yotam Gigi.

16) Add new aquantia driver, from David VomLehn.

17) Add bpf tracepoints, from Daniel Borkmann.

18) Add support for port mirroring to b53 and bcm_sf2 drivers, from
Florian Fainelli.

19) Remove custom busy polling in many drivers, it is done in the core
networking since 4.5 times. From Eric Dumazet.

20) Support XDP adjust_head in virtio_net, from John Fastabend.

21) Fix several major holes in neighbour entry confirmation, from
Julian Anastasov.

22) Add XDP support to bnxt_en driver, from Michael Chan.

23) VXLAN offloads for enic driver, from Govindarajulu Varadarajan.

24) Add IPVTAP driver (IP-VLAN based tap driver) from Sainath Grandhi.

25) Support GRO in IPSEC protocols, from Steffen Klassert"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1764 commits)
Revert "ath10k: Search SMBIOS for OEM board file extension"
net: socket: fix recvmmsg not returning error from sock_error
bnxt_en: use eth_hw_addr_random()
bpf: fix unlocking of jited image when module ronx not set
arch: add ARCH_HAS_SET_MEMORY config
net: napi_watchdog() can use napi_schedule_irqoff()
tcp: Revert "tcp: tcp_probe: use spin_lock_bh()"
net/hsr: use eth_hw_addr_random()
net: mvpp2: enable building on 64-bit platforms
net: mvpp2: switch to build_skb() in the RX path
net: mvpp2: simplify MVPP2_PRS_RI_* definitions
net: mvpp2: fix indentation of MVPP2_EXT_GLOBAL_CTRL_DEFAULT
net: mvpp2: remove unused register definitions
net: mvpp2: simplify mvpp2_bm_bufs_add()
net: mvpp2: drop useless fields in mvpp2_bm_pool and related code
net: mvpp2: remove unused 'tx_skb' field of 'struct mvpp2_tx_queue'
net: mvpp2: release reference to txq_cpu[] entry after unmapping
net: mvpp2: handle too large value in mvpp2_rx_time_coal_set()
net: mvpp2: handle too large value handling in mvpp2_rx_pkts_coal_set()
net: mvpp2: remove useless arguments in mvpp2_rx_{pkts, time}_coal_set
...

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Merge branch 'sctp-rcv-side-stream-reconf-ssn-reset-req-chunk'

Xin Long says:

====================
sctp: add receiver-side procedures for stream reconf ssn reset request chunk

Patch 3/7 and 4/7 ar

Merge branch 'sctp-rcv-side-stream-reconf-ssn-reset-req-chunk'

Xin Long says:

====================
sctp: add receiver-side procedures for stream reconf ssn reset request chunk

Patch 3/7 and 4/7 are to implement receiver-side procedures for the
Outgoing and Incoming SSN Reset Request Parameter described in rfc6525
section 5.2.2 and 5.2.3

Patch 1/7 and 2/7 are ahead of them to define some apis.

Patch 5/7-7/7 are to add the process of reconf chunk event in rx path.

Note that with this patchset, asoc->reconf_enable has no chance yet to
be set, until the patch "sctp: add get and set sockopt for reconf_enable"
is applied in the future. As we can not just enable it when sctp is not
capable of processing reconf chunk yet.

v1->v2:
- re-split the patchset and make sure it has no dead codes for review.
- rename the titles of the commits and improve some changelogs.
- drop __packed from some structures in patch 1/7.
- fix some kbuild warnings in patch 3/7 by initializing str_p = NULL.
- sctp_chunk_lookup_strreset_param changes to return sctp_paramhdr_t *
and uses sctp_strreset_tsnreq to access request_seq in patch 3/7.
- use __u<size> in uapi sctp.h in patch 1/7.
- do str_list endian conversion when generating stream_reset_event in patch
2/7.
- remove str_list endian conversion, pass resp_seq param with network endian
to lookup_strreset_param in 3/7.
- move str_list endian conversion out of sctp_make_strreset_req, so that
sctp_make_strreset_req can be used more conveniently to process inreq in
patch 4/7.
- remove sctp_merge_reconf_chunk and not support response with multiparam
in patch 6/7.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

sctp: implement receiver-side procedures for the Incoming SSN Reset Request Parameter

This patch is to implement Receiver-Side Procedures for the Incoming
SSN Reset Request Parameter described in rf

sctp: implement receiver-side procedures for the Incoming SSN Reset Request Parameter

This patch is to implement Receiver-Side Procedures for the Incoming
SSN Reset Request Parameter described in rfc6525 section 5.2.3.

It's also to move str_list endian conversion out of sctp_make_strreset_req,
so that sctp_make_strreset_req can be used more conveniently to process
inreq.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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sctp: implement receiver-side procedures for the Outgoing SSN Reset Request Parameter

This patch is to implement Receiver-Side Procedures for the Outgoing
SSN Reset Request Parameter described in rf

sctp: implement receiver-side procedures for the Outgoing SSN Reset Request Parameter

This patch is to implement Receiver-Side Procedures for the Outgoing
SSN Reset Request Parameter described in rfc6525 section 5.2.2.

Note that some checks must be after request_seq check, as even those
checks fail, strreset_inseq still has to be increase by 1.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Merge branch 'sctp-sender-stream-reconf-reset-add-streams'

Xin Long says:

====================
sctp: add sender-side procedures for stream reconf asoc reset and add streams

Patch 4/6 is to impleme

Merge branch 'sctp-sender-stream-reconf-reset-add-streams'

Xin Long says:

====================
sctp: add sender-side procedures for stream reconf asoc reset and add streams

Patch 4/6 is to implement sender-side procedures for the SSN/TSN Reset
Request Parameter described in rfc6525 section 5.1.4, patch 3/6 is
ahead of it to define a function to make the request chunk for it.

Patch 6/6 is to implement sender-side procedures for the Add Incoming
and Outgoing Streams Request Parameter Request Parameter described in
rfc6525 section 5.1.5 and 5.1.6, patch 5/6 is ahead of it to define a
function to make the request chunk for it.

Patch 2/6 is a fix to recover streams states when it fails to send
request and Patch 1/6 is to drop some unncessary __packed from some
old structures.

v1->v2:
- put these into a smaller group.
- rename some temporary variables in the codes.
- rename the titles of the commits and improve some changelogs.
v2->v3:
- re-split the patchset and make sure it has no dead codes for review.
- move some codes into stream.c from socket.c.
v3->v4:
- add one more patch to fix a send reset stream request issue.
- doing actual work only when request is sent successfully.
- reduce some indents in sctp_send_add_streams.
v4->v5:
- close streams before sending request and recover them when sending
fails in patch 1/5 and patch 3/5
v5->v6:
- add patch 1/6 to drop some unncessary __packed from some old structures.
- remove __packed from some new structures in patch 3/6 and 5/6.
- define unsigned int outcnt and incnt to make codes smaller in patch 6/6.
- use krealloc instead of kcalloc and remove ksize check in patch 6/6, as
ksize check is acutally used in krealloc already.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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sctp: implement sender-side procedures for Add Incoming/Outgoing Streams Request Parameter

This patch is to implement Sender-Side Procedures for the Add
Outgoing and Incoming Streams Request Paramet

sctp: implement sender-side procedures for Add Incoming/Outgoing Streams Request Parameter

This patch is to implement Sender-Side Procedures for the Add
Outgoing and Incoming Streams Request Parameter described in
rfc6525 section 5.1.5-5.1.6.

It is also to add sockopt SCTP_ADD_STREAMS in rfc6525 section
6.3.4 for users.

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>

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sctp: implement sender-side procedures for SSN/TSN Reset Request Parameter

This patch is to implement Sender-Side Procedures for the SSN/TSN
Reset Request Parameter descibed in rfc6525 section 5.1.4

sctp: implement sender-side procedures for SSN/TSN Reset Request Parameter

This patch is to implement Sender-Side Procedures for the SSN/TSN
Reset Request Parameter descibed in rfc6525 section 5.1.4.

It is also to add sockopt SCTP_RESET_ASSOC in rfc6525 section 6.3.3
for users.

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>

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sctp: streams should be recovered when it fails to send request.

Now when sending stream reset request, it closes the streams to
block further xmit of data until this request is completed, then
call

sctp: streams should be recovered when it fails to send request.

Now when sending stream reset request, it closes the streams to
block further xmit of data until this request is completed, then
calls sctp_send_reconf to send the chunk.

But if sctp_send_reconf returns err, and it doesn't recover the
streams' states back, which means the request chunk would not be
queued and sent, so the asoc will get stuck, streams are closed
and no packet is even queued.

This patch is to fix it by recovering the streams' states when
it fails to send the request, it is also to fix a return value.

Fixes: 7f9d68ac944e ("sctp: implement sender-side procedures for SSN Reset Request Parameter")
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>

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Merge branch 'sctp-sender-side-stream-reconf-ssn-reset-request-chunk'

Xin Long says:

====================
sctp: add sender-side procedures for stream reconf ssn reset request chunk

Patch 6/6 is to

Merge branch 'sctp-sender-side-stream-reconf-ssn-reset-request-chunk'

Xin Long says:

====================
sctp: add sender-side procedures for stream reconf ssn reset request chunk

Patch 6/6 is to implement sender-side procedures for the Outgoing
and Incoming SSN Reset Request Parameter described in rfc6525
section 5.1.2 and 5.1.3

Patches 1-5/6 are ahead of it to define some apis and asoc members
for it.

Note that with this patchset, asoc->reconf_enable has no chance yet to
be set, until the patch "sctp: add get and set sockopt for reconf_enable"
is applied in the future. As we can not just enable it when sctp is not
capable of processing reconf chunk yet.

v1->v2:
- put these into a smaller group.
- rename some temporary variables in the codes.
- rename the titles of the commits and improve some changelogs.
v2->v3:
- re-split the patchset and make sure it has no dead codes for review.
v3->v4:
- move sctp_make_reconf() into patch 1/6 to avoid kbuild warning.
- drop unused struct sctp_strreset_req.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

sctp: implement sender-side procedures for SSN Reset Request Parameter

This patch is to implement sender-side procedures for the Outgoing
and Incoming SSN Reset Request Parameter described in rfc652

sctp: implement sender-side procedures for SSN Reset Request Parameter

This patch is to implement sender-side procedures for the Outgoing
and Incoming SSN Reset Request Parameter described in rfc6525 section
5.1.2 and 5.1.3.

It is also add sockopt SCTP_RESET_STREAMS in rfc6525 section 6.3.2
for users.

Note that the new asoc member strreset_outstanding is to make sure
only one reconf request chunk on the fly as rfc6525 section 5.1.1
demands.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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sctp: prepare asoc stream for stream reconf

sctp stream reconf, described in RFC 6525, needs a structure to
save per stream information in assoc, like stream state.

In the future, sctp stream sched

sctp: prepare asoc stream for stream reconf

sctp stream reconf, described in RFC 6525, needs a structure to
save per stream information in assoc, like stream state.

In the future, sctp stream scheduler also needs it to save some
stream scheduler params and queues.

This patchset is to prepare the stream array in assoc for stream
reconf. It defines sctp_stream that includes stream arrays inside
to replace ssnmap.

Note that we use different structures for IN and OUT streams, as
the members in per OUT stream will get more and more different
from per IN stream.

v1->v2:
- put these patches into a smaller group.
v2->v3:
- define sctp_stream to contain stream arrays, and create stream.c
to put stream-related functions.
- merge 3 patches into 1, as new sctp_stream has the same name
with before.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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