提交 · 9232a3e67b212f9ef924786f8dde23080acd321a · openeuler / Kernel

21 7月, 2020 2 次提交

net: dsa: Setup dsa_netdev_ops · 9c0c7014

由 Florian Fainelli 提交于 7月 19, 2020

Now that we have all the infrastructure in place for calling into the
dsa_ptr->netdev_ops function pointers, install them when we configure
the DSA CPU/management interface and tear them down. The flow is
unchanged from before, but now we preserve equality of tests when
network device drivers do tests like dev->netdev_ops == &foo_ops which
was not the case before since we were allocating an entirely new
structure.
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

9c0c7014

net: dsa: Add wrappers for overloaded ndo_ops · 4cfab356

由 Florian Fainelli 提交于 7月 19, 2020

Add definitions for the dsa_netdevice_ops structure which is a subset of
the net_device_ops structure for the specific operations that we care
about overlaying on top of the DSA CPU port net_device and provide
inline stubs that take core managing whether DSA code is reachable.
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

4cfab356

20 7月, 2020 7 次提交

icmp: support rfc 4884 · eba75c58

由 Willem de Bruijn 提交于 7月 10, 2020

Add setsockopt SOL_IP/IP_RECVERR_4884 to return the offset to an
extension struct if present.

ICMP messages may include an extension structure after the original
datagram. RFC 4884 standardized this behavior. It stores the offset
in words to the extension header in u8 icmphdr.un.reserved[1].

The field is valid only for ICMP types destination unreachable, time
exceeded and parameter problem, if length is at least 128 bytes and
entire packet does not exceed 576 bytes.

Return the offset to the start of the extension struct when reading an
ICMP error from the error queue, if it matches the above constraints.

Do not return the raw u8 field. Return the offset from the start of
the user buffer, in bytes. The kernel does not return the network and
transport headers, so subtract those.

Also validate the headers. Return the offset regardless of validation,
as an invalid extension must still not be misinterpreted as part of
the original datagram. Note that !invalid does not imply valid. If
the extension version does not match, no validation can take place,
for instance.

For backward compatibility, make this optional, set by setsockopt
SOL_IP/IP_RECVERR_RFC4884. For API example and feature test, see
github.com/wdebruij/kerneltools/blob/master/tests/recv_icmp_v2.c

For forward compatibility, reserve only setsockopt value 1, leaving
other bits for additional icmp extensions.

Changes
  v1->v2:
  - convert word offset to byte offset from start of user buffer
    - return in ee_data as u8 may be insufficient
  - define extension struct and object header structs
  - return len only if constraints met
  - if returning len, also validate
Signed-off-by: NWillem de Bruijn <willemb@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

eba75c58

xdp: introduce xdp_get_shared_info_from_{buff, frame} utility routines · 2f0bc54b

由 Lorenzo Bianconi 提交于 7月 17, 2020

Introduce xdp_get_shared_info_from_{buff,frame} utility routines to get
skb_shared_info from xdp buffer/frame pointer.
xdp_get_shared_info_from_{buff,frame} will be used to implement xdp
multi-buffer support
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

2f0bc54b

net: make ->{get,set}sockopt in proto_ops optional · a44d9e72

由 Christoph Hellwig 提交于 7月 17, 2020

Just check for a NULL method instead of wiring up
sock_no_{get,set}sockopt.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Acked-by: NMarc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

a44d9e72

net/ipv6: remove compat_ipv6_{get,set}sockopt · 3021ad52

由 Christoph Hellwig 提交于 7月 17, 2020

Handle the few cases that need special treatment in-line using
in_compat_syscall().  This also removes all the now unused
compat_{get,set}sockopt methods.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

3021ad52

net/ipv4: remove compat_ip_{get,set}sockopt · b6238c04

由 Christoph Hellwig 提交于 7月 17, 2020

Handle the few cases that need special treatment in-line using
in_compat_syscall().
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

b6238c04

net: remove compat_sock_common_{get,set}sockopt · 8c918ffb

由 Christoph Hellwig 提交于 7月 17, 2020

Add the compat handling to sock_common_{get,set}sockopt instead,
keyed of in_compat_syscall().  This allow to remove the now unused
->compat_{get,set}sockopt methods from struct proto_ops.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Acked-by: NMatthieu Baerts <matthieu.baerts@tessares.net>
Acked-by: NStefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

8c918ffb

net: simplify cBPF setsockopt compat handling · 4d295e54

由 Christoph Hellwig 提交于 7月 17, 2020

Add a helper that copies either a native or compat bpf_fprog from
userspace after verifying the length, and remove the compat setsockopt
handlers that now aren't required.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

4d295e54

17 7月, 2020 2 次提交

Revert "net: sched: Pass root lock to Qdisc_ops.enqueue" · ac5c66f2

由 Petr Machata 提交于 7月 14, 2020

This reverts commit aebe4426.
Signed-off-by: NPetr Machata <petrm@mellanox.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

ac5c66f2

net: sched: Do not drop root lock in tcf_qevent_handle() · 55f656cd

由 Petr Machata 提交于 7月 14, 2020

Mirred currently does not mix well with blocks executed after the qdisc
root lock is taken. This includes classification blocks (such as in PRIO,
ETS, DRR qdiscs) and qevents. The locking caused by the packet mirrored by
mirred can cause deadlocks: either when the thread of execution attempts to
take the lock a second time, or when two threads end up waiting on each
other's locks.

The qevent patchset attempted to not introduce further badness of this
sort, and dropped the lock before executing the qevent block. However this
lead to too little locking and races between qdisc configuration and packet
enqueue in the RED qdisc.

Before the deadlock issues are solved in a way that can be applied across
many qdiscs reasonably easily, do for qevents what is done for the
classification blocks and just keep holding the root lock.
Signed-off-by: NPetr Machata <petrm@mellanox.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

55f656cd

16 7月, 2020 6 次提交

net: sctp: drop duplicate words in comments · d86f9868