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This implements a sample program for testing bpf_redirect. It reports
the number of packets redirected per second and as input takes the
ifindex of the device to run the xdp program on and the ifindex of the
interface to redirect packets to.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Tested-by: Andy Gospodarek <andy@greyhouse.net>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This adds support for a bpf_redirect helper function to the XDP
infrastructure. For now this only supports redirecting to the egress
path of a port.
In order to support drivers handling a xdp_buff natively this patches
uses a new ndo operation ndo_xdp_xmit() that takes pushes a xdp_buff
to the specified device.
If the program specifies either (a) an unknown device or (b) a device
that does not support the operation a BPF warning is thrown and the
XDP_ABORTED error code is returned.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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XDP generic allows users to test XDP programs and/or run them with
degraded performance on devices that do not yet support XDP. For
testing I typically test eBPF programs using a set of veth devices.
This allows testing topologies that would otherwise be difficult to
setup especially in the early stages of development.
This patch adds a xdp generic hook to the netif_rx_internal()
function which is called from dev_forward_skb(). With this addition
attaching XDP programs to veth devices works as expected! Also I
noticed multiple drivers using netif_rx(). These devices will also
benefit and generic XDP will work for them as well.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Tested-by: Andy Gospodarek <andy@greyhouse.net>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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tx_rings and rx_rings are cleaned up on close paths in ixgbe driver
however, xdp_rings are not. Set the xdp_rings to NULL here so that
we can use the pointer to indicate if the XDP rings are initialized.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jiri Pirko says:
====================
mlxsw: Traps enhancements
Ido says:
The first patch makes sure the driver marks packets that were trapped
in the router and might have already been flooded by the bridge, so that
the bridge driver won't flood them again. This isn't critical at this time
point, but will be when Neighbour Discovery traps are introduced as these
are multicast packets that are trapped in the router.
The second and third patches add new traps - for MLD and Router Alert
packets. The last patch takes advantage of that and floods IPv6
unregistered multicast packets only to mrouter ports instead of all ports.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Up until now IPv6 unregistered multicast traffic would be flooded like
broadcast, even when MLD snooping was enabled on the bridge. This was
intentional as MLD packet traps were missing, preventing the bridge
driver from programming MDB entries to the device.
Previous patch added these traps, so we can now finally flood IPv6
unregistered multicast packets to specific ports via the multicast table
instead of flooding them to all ports via the broadcast table.
Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for IPv6 MLDv1/2 packet trapping.
Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In case local sockets have the IP_ROUTER_ALERT socket option set, then
they expect to get packets with the Router Alert option.
Trap such packets, so that the kernel could inspect them and potentially
send them to interested sockets.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In commit 1c6c6d221e2b ("mlxsw: spectrum: Mirror certain packets to
CPU") we marked packets that were mirrored to the CPU, so that they
won't be flooded again by the bridge driver.
However, certain packets are trapped in the device's router block, after
passing through the bridge block where they were potentially flooded.
Mark all packets coming from L3 traps, so that they won't be potentially
flooded again by the bridge driver.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jiri Pirko says:
====================
mlxsw: offloading matches on ip ttl and tos
Or says:
Support offloading matches on ip ttl and tos
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Support offloading rules that match on ip tos.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add ecn and dscp fields to the ipv4 acl block.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Define new element for ip tos (ecn, dscp) and place it into scratch area.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Support offloading rules that match on ip ttl.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add ttl field to the ipv4 acl block.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Define new element for ip ttl and place it into scratch area.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As discussed in Faro during Netfilter Workshop 2017, RB trees can be
used with RCU, using a seqlock.
Note that net/rxrpc/conn_service.c is already using this.
This patch converts inetpeer from AVL tree to RB tree, since it allows
to remove private AVL implementation in favor of shared RB code.
$ size net/ipv4/inetpeer.before net/ipv4/inetpeer.after
text data bss dec hex filename
3195 40 128 3363 d23 net/ipv4/inetpeer.before
1562 24 0 1586 632 net/ipv4/inetpeer.after
The same technique can be used to speed up
net/netfilter/nft_set_rbtree.c (removing rwlock contention in fast path)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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All unix sockets now account inflight FDs to the respective sender.
This was introduced in:
commit 712f4aad406bb1ed67f3f98d04c044191f0ff593
Author: willy tarreau <w@1wt.eu>
Date: Sun Jan 10 07:54:56 2016 +0100
unix: properly account for FDs passed over unix sockets
and further refined in:
commit 415e3d3e90ce9e18727e8843ae343eda5a58fad6
Author: Hannes Frederic Sowa <hannes@stressinduktion.org>
Date: Wed Feb 3 02:11:03 2016 +0100
unix: correctly track in-flight fds in sending process user_struct
Hence, regardless of the stacking depth of FDs, the total number of
inflight FDs is limited, and accounted. There is no known way for a
local user to exceed those limits or exploit the accounting.
Furthermore, the GC logic is independent of the recursion/stacking depth
as well. It solely depends on the total number of inflight FDs,
regardless of their layout.
Lastly, the current `recursion_level' suffers a TOCTOU race, since it
checks and inherits depths only at queue time. If we consider `A<-B' to
mean `queue-B-on-A', the following sequence circumvents the recursion
level easily:
A<-B
B<-C
C<-D
...
Y<-Z
resulting in:
A<-B<-C<-...<-Z
With all of this in mind, lets drop the recursion limit. It has no
additional security value, anymore. On the contrary, it randomly
confuses message brokers that try to forward file-descriptors, since
any sendmsg(2) call can fail spuriously with ETOOMANYREFS if a client
maliciously modifies the FD while inflight.
Cc: Alban Crequy <alban.crequy@collabora.co.uk>
Cc: Simon McVittie <simon.mcvittie@collabora.co.uk>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In the pull_pages code block, if the first frag size > eat,
we can end the loop in advance to avoid extra copy.
Signed-off-by: Lin Zhang <xiaolou4617@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add a new compatible string for the RZ/G1M (R8A7743) SoC.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Keep supporting proprietary "xlnx,phy-type" attribute and add support for
MII connectivity to the PHY.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alvaro Gamez Machado <alvaro.gamez@hazent.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Xin Long says:
====================
sctp: remove typedefs from structures part 2
As we know, typedef is suggested not to use in kernel, even checkpatch.pl
also gives warnings about it. Now sctp is using it for many structures.
All this kind of typedef's using should be removed. This patchset is the
part 2 to remove it for another 11 basic structures.
Just as the part 1, No any code's logic would be changed in these patches,
only cleaning up.
Note that v1->v2, nothing changed, just because net-next were closed when
posting v1.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch is to remove the typedef sctp_hmac_algo_param_t, and
replace with struct sctp_hmac_algo_param in the places where it's
using this typedef.
It is also to use sizeof(variable) instead of sizeof(type).
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch is to remove the typedef sctp_chunks_param_t, and
replace with struct sctp_chunks_param in the places where it's
using this typedef.
It is also to use sizeof(variable) instead of sizeof(type).
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch is to remove the typedef sctp_random_param_t, and
replace with struct sctp_random_param in the places where it's
using this typedef.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch is to remove the typedef sctp_supported_ext_param_t, and
replace with struct sctp_supported_ext_param in the places where it's
using this typedef.
It is also to use sizeof(variable) instead of sizeof(type).
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch is to remove the typedef sctp_adaptation_ind_param_t, and
replace with struct sctp_adaptation_ind_param in the places where it's
using this typedef.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove it, there is even no places using it.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch is to remove the typedef sctp_supported_addrs_param_t, and
replace with struct sctp_supported_addrs_param in the places where it's
using this typedef.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove this typedef, there is even no places using it.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch is to remove the typedef sctp_cookie_preserve_param_t, and
replace with struct sctp_cookie_preserve_param in the places where it's
using this typedef.
It is also to fix some indents in sctp_sf_do_5_2_6_stale().
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch is to remove the typedef sctp_ipv6addr_param_t, and replace
with struct sctp_ipv6addr_param in the places where it's using this
typedef.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch is to remove the typedef sctp_ipv4addr_param_t, and replace
with struct sctp_ipv4addr_param in the places where it's using this
typedef.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We could end up executing rds_conn_shutdown before the rds_recv_worker
thread, then rds_conn_shutdown -> rds_tcp_conn_shutdown can do a
sock_release and set sock->sk to null, which may interleave in bad
ways with rds_recv_worker, e.g., it could result in:
"BUG: unable to handle kernel NULL pointer dereference at 0000000000000078"
[ffff881769f6fd70] release_sock at ffffffff815f337b
[ffff881769f6fd90] rds_tcp_recv at ffffffffa043c888 [rds_tcp]
[ffff881769f6fdb0] rds_recv_worker at ffffffffa04a4810 [rds]
[ffff881769f6fde0] process_one_work at ffffffff810a14c1
[ffff881769f6fe40] worker_thread at ffffffff810a1940
[ffff881769f6fec0] kthread at ffffffff810a6b1e
Also, do not enqueue any new shutdown workq items when the connection is
shutting down (this may happen for rds-tcp in softirq mode, if a FIN
or CLOSE is received while the modules is in the middle of an unload)
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Arvind Yadav says:
====================
atm: constify atm pci_device_id.
pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
27702 468 16 28186 6e1a drivers/atm/idt77252.o
File size After adding 'const':
text data bss dec hex filename
27766 404 16 28186 6e1a drivers/atm/idt77252.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
21565 352 56 21973 55d5 drivers/atm/eni.o
File size After adding 'const':
text data bss dec hex filename
21661 256 56 21973 55d5 drivers/atm/eni.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
16884 444 28 17356 43cc drivers/atm/firestream.o
File size After adding 'const':
text data bss dec hex filename
16980 348 28 17356 43cc drivers/atm/firestream.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
14350 352 40 14742 3996 drivers/atm/zatm.o
File size After adding 'const':
text data bss dec hex filename
14446 256 40 14742 3996 drivers/atm/zatm.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
18074 352 0 18426 47fa drivers/atm/lanai.o
File size After adding 'const':
text data bss dec hex filename
18170 256 0 18426 47fa drivers/atm/lanai.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
16138 4592 24 20754 5112 drivers/atm/solos-pci.o
File size After adding 'const':
text data bss dec hex filename
16218 4528 24 20754 5122 drivers/atm/solos-pci.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
9859 328 6 10193 27d1 drivers/atm/horizon.o
File size After adding 'const':
text data bss dec hex filename
9923 264 6 10193 27d1 drivers/atm/horizon.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
26514 440 48 27002 697a drivers/atm/he.o
File size After adding 'const':
text data bss dec hex filename
26578 376 48 27002 697a drivers/atm/he.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
22781 464 128 23373 5b4d drivers/atm/nicstar.o
File size After adding 'const':
text data bss dec hex filename
22845 400 128 23373 5b4d drivers/atm/nicstar.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
20025 320 16 20361 4f89 drivers/atm/fore200e.o
File size After adding 'const':
text data bss dec hex filename
20089 256 16 20361 4f89 drivers/atm/fore200e.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
13372 408 4 13784 35d8 drivers/atm/ambassador.o
File size After adding 'const':
text data bss dec hex filename
13484 296 4 13784 35d8 drivers/atm/ambassador.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
23536 432 160 24128 5e40 drivers/atm/iphase.o
File size After adding 'const':
text data bss dec hex filename
23632 336 160 24128 5e40 drivers/atm/iphase.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The definition of an "anycast destination address" has been tweaked as a
side-effect of commit 2647a9b07032 ("ipv6: Remove external dependency on
rt6i_gateway and RTF_ANYCAST"). The first address of a point-to-point
/127 subnet is now considered as an anycast address. This prevents
ICMPv6 errors to be returned to a sender of such a subnet and breaks
PMTU discovery.
This can be reproduced with:
ip link add name out6 type veth peer name in6
ip link add name out7 type veth peer name in7
ip link set mtu 1400 dev out7
ip link set mtu 1400 dev in7
ip netns add next-hop
ip netns add next-next-hop
ip link set netns next-hop dev in6
ip link set netns next-hop dev out7
ip link set netns next-next-hop dev in7
ip link set up dev out6
ip addr add 2001:db8:1::12/127 dev out6
ip netns exec next-hop ip link set up dev in6
ip netns exec next-hop ip link set up dev out7
ip netns exec next-hop ip addr add 2001:db8:1::13/127 dev in6
ip netns exec next-hop ip addr add 2001:db8:1::14/127 dev out7
ip netns exec next-hop ip route add default via 2001:db8:1::15
ip netns exec next-hop sysctl -qw net.ipv6.conf.all.forwarding=1
ip netns exec next-next-hop ip link set up dev in7
ip netns exec next-next-hop ip addr add 2001:db8:1::15/127 dev in7
ip netns exec next-next-hop ip addr add 2001:db8:1::50/128 dev in7
ip netns exec next-next-hop ip route add default via 2001:db8:1::14
ip netns exec next-next-hop sysctl -qw net.ipv6.conf.all.forwarding=1
ip route add 2001:db8:1::48/123 via 2001:db8:1::13
sleep 4
ping -M do -s 1452 -c 3 2001:db8:1::50 || true
ip route get 2001:db8:1::50
Before the patch, we get:
2001:db8:1::50 from :: via 2001:db8:1::13 dev out6 src 2001:db8:1::12 metric 1024 pref medium
After the patch, we get:
2001:db8:1::50 via 2001:db8:1::13 dev out6 src 2001:db8:1::12 metric 0
cache expires 578sec mtu 1400 pref medium
Fixes: 2647a9b07032 ("ipv6: Remove external dependency on rt6i_gateway and RTF_ANYCAST")
Signed-off-by: Vincent Bernat <vincent@bernat.im>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Let bondvf.sh ignore this NIC if it has been configured, to prevent
user configuration from being overwritten unexpectly.
Signed-off-by: Simon Xiao <sixiao@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The original code didn't handle non-IPv4 packets very well, so the
offload advertising had to be scaled back down to just IP. Here we
add the bits needed to support TCP and UDP packets over IPv6 and
turn the offload advertising back on.
Orabug: 26289579
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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John Fastabend
David S. Miller
Arkadi Sharshevsky
Ido Schimmel
Or Gerlitz
Eric Dumazet
David Herrmann
linzhang
Biju Das
Alvaro G. M
Xin Long
Sowmini Varadhan
Arvind Yadav
Vincent Bernat
sixiao@microsoft.com
Shannon Nelson