- 12 Jun, 2019 9 commits
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Jiri Pirko authored
The TOS value was not extracted correctly. Fix it. Fixes: 87996f91 ("mlxsw: spectrum_flower: Add support for ip tos") Reported-by:
Alexander Petrovskiy <alexpe@mellanox.com> Signed-off-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Ido Schimmel authored
Test that IPv4 and IPv6 nexthops are correctly marked with offload indication in response to neighbour events. Signed-off-by:
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Ido Schimmel authored
The driver tries to periodically refresh neighbours that are used to reach nexthops. This is done by periodically calling neigh_event_send(). However, if the neighbour becomes dead, there is nothing we can do to return it to a connected state and the above function call is basically a NOP. This results in the nexthop never being written to the device's adjacency table and therefore never used to forward packets. Fix this by dropping our reference from the dead neighbour and associating the nexthop with a new neigbhour which we will try to refresh. Fixes: a7ff87ac ("mlxsw: spectrum_router: Implement next-hop routing") Signed-off-by:
Alex Veber <alexve@mellanox.com> Tested-by:
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Ido Schimmel authored
The same hash function and seed are used for both ECMP and LAG hash. Therefore, when a LAG device is used as a nexthop device as part of an ECMP group, hash polarization can occur and all the traffic will be hashed to a single LAG slave. Fix this by using a different seed for the LAG hash. Fixes: fa73989f ("mlxsw: spectrum: Use a stable ECMP/LAG seed") Signed-off-by:
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John Fastabend authored
tls_sw_do_sendpage needs to return the total number of bytes sent regardless of how many sk_msgs are allocated. Unfortunately, copied (the value we return up the stack) is zero'd before each new sk_msg is allocated so we only return the copied size of the last sk_msg used. The caller (splice, etc.) of sendpage will then believe only part of its data was sent and send the missing chunks again. However, because the data actually was sent the receiver will get multiple copies of the same data. To reproduce this do multiple sendfile calls with a length close to the max record size. This will in turn call splice/sendpage, sendpage may use multiple sk_msg in this case and then returns the incorrect number of bytes. This will cause splice to resend creating duplicate data on the receiver. Andre created a C program that can easily generate this case so we will push a similar selftest for this to bpf-next shortly. The fix is to _not_ zero the copied field so that the total sent bytes is returned. Reported-by:
Steinar H. Gunderson <steinar+kernel@gunderson.no> Reported-by:
Andre Tomt <andre@tomt.net> Tested-by:
John Fastabend <john.fastabend@gmail.com> Signed-off-by:
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Stephen Suryaputra authored
Get the ingress interface and increment ICMP counters based on that instead of skb->dev when the the dev is a VRF device. This is a follow up on the following message: https://www.spinics.net/lists/netdev/msg560268.html v2: Avoid changing skb->dev since it has unintended effect for local delivery (David Ahern). Signed-off-by:
Stephen Suryaputra <ssuryaextr@gmail.com> Reviewed-by:
David Ahern <dsahern@gmail.com> Signed-off-by:
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Maxime Chevallier authored
Using ethtool, users can specify a classification action matching on the full vlan tag, which includes the DEI bit (also previously called CFI). However, when converting the ethool_flow_spec to a flow_rule, we use dissector keys to represent the matching patterns. Since the vlan dissector key doesn't include the DEI bit, this information was silently discarded when translating the ethtool flow spec in to a flow_rule. This commit adds the DEI bit into the vlan dissector key, and allows propagating the information to the driver when parsing the ethtool flow spec. Fixes: eca4205f ("ethtool: add ethtool_rx_flow_spec to flow_rule structure translator") Reported-by:
Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by:
Maxime Chevallier <maxime.chevallier@bootlin.com> Signed-off-by:
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Masanari Iida authored
This patch fixes a spelling typo in rds.txt Signed-off-by:
Masanari Iida <standby24x7@gmail.com> Acked-by:
Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by:
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Matteo Croce authored
Randy reported that selecting MPLS_ROUTING without PROC_FS breaks the build, because since commit c1a9d659 ("mpls: fix af_mpls dependencies"), MPLS_ROUTING selects PROC_SYSCTL, but Kconfig's select doesn't recursively handle dependencies. Change the select into a dependency. Fixes: c1a9d659 ("mpls: fix af_mpls dependencies") Reported-by:
Randy Dunlap <rdunlap@infradead.org> Signed-off-by:
Matteo Croce <mcroce@redhat.com> Signed-off-by:
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- 11 Jun, 2019 5 commits
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David S. Miller authored
Stefano Brivio says: ==================== Don't assume linear buffers in error handlers for VXLAN and GENEVE Guillaume noticed the same issue fixed by commit 26fc181e ("fou, fou6: do not assume linear skbs") for fou and fou6 is also present in VXLAN and GENEVE error handlers: we can't assume linear buffers there, we need to use pskb_may_pull() instead. ==================== Acked-by:
Guillaume Nault <gnault@redhat.com> Signed-off-by:
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Stefano Brivio authored
In commit a0796644 ("geneve: ICMP error lookup handler") I wrongly assumed buffers from icmp_socket_deliver() would be linear. This is not the case: icmp_socket_deliver() only guarantees we have 8 bytes of linear data. Eric fixed this same issue for fou and fou6 in commits 26fc181e ("fou, fou6: do not assume linear skbs") and 5355ed63 ("fou, fou6: avoid uninit-value in gue_err() and gue6_err()"). Use pskb_may_pull() instead of checking skb->len, and take into account the fact we later access the GENEVE header with udp_hdr(), so we also need to sum skb_transport_header() here. Reported-by:
Stefano Brivio <sbrivio@redhat.com> Signed-off-by:
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Stefano Brivio authored
In commit c3a43b9f ("vxlan: ICMP error lookup handler") I wrongly assumed buffers from icmp_socket_deliver() would be linear. This is not the case: icmp_socket_deliver() only guarantees we have 8 bytes of linear data. Eric fixed this same issue for fou and fou6 in commits 26fc181e ("fou, fou6: do not assume linear skbs") and 5355ed63 ("fou, fou6: avoid uninit-value in gue_err() and gue6_err()"). Use pskb_may_pull() instead of checking skb->len, and take into account the fact we later access the VXLAN header with udp_hdr(), so we also need to sum skb_transport_header() here. Reported-by:
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Taehee Yoo authored
In order to create an internal vport, internal_dev_create() is used and that calls register_netdevice() internally. If register_netdevice() fails, it calls dev->priv_destructor() to free private data of netdev. actually, a private data of this is a vport. Hence internal_dev_create() should not free and use a vport after failure of register_netdevice(). Test command ovs-dpctl add-dp bonding_masters Splat looks like: [ 1035.667767] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 1035.675958] general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN PTI [ 1035.676916] CPU: 1 PID: 1028 Comm: ovs-vswitchd Tainted: G B 5.2.0-rc3+ #240 [ 1035.676916] RIP: 0010:internal_dev_create+0x2e5/0x4e0 [openvswitch] [ 1035.676916] Code: 48 c1 ea 03 80 3c 02 00 0f 85 9f 01 00 00 4c 8b 23 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 60 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 86 01 00 00 49 8b bc 24 60 05 00 00 e8 e4 68 f4 [ 1035.713720] RSP: 0018:ffff88810dcb7578 EFLAGS: 00010206 [ 1035.713720] RAX: dffffc0000000000 RBX: ffff88810d13fe08 RCX: ffffffff84297704 [ 1035.713720] RDX: 00000000000000ac RSI: 0000000000000000 RDI: 0000000000000560 [ 1035.713720] RBP: 00000000ffffffef R08: fffffbfff0d3b881 R09: fffffbfff0d3b881 [ 1035.713720] R10: 0000000000000001 R11: fffffbfff0d3b880 R12: 0000000000000000 [ 1035.768776] R13: 0000607ee460b900 R14: ffff88810dcb7690 R15: ffff88810dcb7698 [ 1035.777709] FS: 00007f02095fc980(0000) GS:ffff88811b400000(0000) knlGS:0000000000000000 [ 1035.777709] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1035.777709] CR2: 00007ffdf01d2f28 CR3: 0000000108258000 CR4: 00000000001006e0 [ 1035.777709] Call Trace: [ 1035.777709] ovs_vport_add+0x267/0x4f0 [openvswitch] [ 1035.777709] new_vport+0x15/0x1e0 [openvswitch] [ 1035.777709] ovs_vport_cmd_new+0x567/0xd10 [openvswitch] [ 1035.777709] ? ovs_dp_cmd_dump+0x490/0x490 [openvswitch] [ 1035.777709] ? __kmalloc+0x131/0x2e0 [ 1035.777709] ? genl_family_rcv_msg+0xa54/0x1030 [ 1035.777709] genl_family_rcv_msg+0x63a/0x1030 [ 1035.777709] ? genl_unregister_family+0x630/0x630 [ 1035.841681] ? debug_show_all_locks+0x2d0/0x2d0 [ ... ] Fixes: cf124db5 ("net: Fix inconsistent teardown and release of private netdev state.") Signed-off-by:Taehee Yoo <ap420073@gmail.com> Reviewed-by:
Greg Rose <gvrose8192@gmail.com> Signed-off-by:
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Willem de Bruijn authored
The below patch fixes an incorrect zerocopy refcnt increment when appending with MSG_MORE to an existing zerocopy udp skb. send(.., MSG_ZEROCOPY | MSG_MORE); // refcnt 1 send(.., MSG_ZEROCOPY | MSG_MORE); // refcnt still 1 (bar frags) But it missed that zerocopy need not be passed at the first send. The right test whether the uarg is newly allocated and thus has extra refcnt 1 is not !skb, but !skb_zcopy. send(.., MSG_MORE); // <no uarg> send(.., MSG_ZEROCOPY); // refcnt 1 Fixes: 100f6d8e ("net: correct zerocopy refcnt with udp MSG_MORE") Reported-by:
syzbot <syzkaller@googlegroups.com> Signed-off-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
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- 10 Jun, 2019 9 commits
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John Hurley authored
Packets received at the NFP driver may be redirected to egress of another netdev (e.g. in the case of OvS internal ports). On the egress path, some processes, like TC egress hooks, may expect the network header offset field in the skb to be correctly set. If this is not the case there is potential for abnormal behaviour and even the triggering of BUG() calls. Set the skb network header field before the mac header pull when doing a packet redirect. Fixes: 27f54b58 ("nfp: allow fallback packets from non-reprs") Signed-off-by:
John Hurley <john.hurley@netronome.com> Reviewed-by:
Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by:
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Yuchung Cheng authored
Commit 794200d6 ("tcp: undo cwnd on Fast Open spurious SYNACK retransmit") may cause tcp_fastretrans_alert() to warn about pending retransmission in Open state. This is triggered when the Fast Open server both sends data and has spurious SYNACK retransmission during the handshake, and the data packets were lost or reordered. The root cause is a bit complicated: (1) Upon receiving SYN-data: a full socket is created with snd_una = ISN + 1 by tcp_create_openreq_child() (2) On SYNACK timeout the server/sender enters CA_Loss state. (3) Upon receiving the final ACK to complete the handshake, sender does not mark FLAG_SND_UNA_ADVANCED since (1) Sender then calls tcp_process_loss since state is CA_loss by (2) (4) tcp_process_loss() does not invoke undo operations but instead mark REXMIT_LOST to force retransmission (5) tcp_rcv_synrecv_state_fastopen() calls tcp_try_undo_loss(). It changes state to CA_Open but has positive tp->retrans_out (6) Next ACK triggers the WARN_ON in tcp_fastretrans_alert() The step that goes wrong is (4) where the undo operation should have been invoked because the ACK successfully acknowledged the SYN sequence. This fixes that by specifically checking undo when the SYN-ACK sequence is acknowledged. Then after tcp_process_loss() the state would be further adjusted based in tcp_fastretrans_alert() to avoid triggering the warning in (6). Fixes: 794200d6 ("tcp: undo cwnd on Fast Open spurious SYNACK retransmit") Signed-off-by:
Yuchung Cheng <ycheng@google.com> Signed-off-by:
Neal Cardwell <ncardwell@google.com> Signed-off-by:
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Matteo Croce authored
MPLS routing code relies on sysctl to work, so let it select PROC_SYSCTL. Reported-by:
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David S. Miller authored
Thomas Falcon says: ==================== ibmvnic: Fixes for device reset handling This series contains three unrelated fixes to issues seen during device resets. The first patch fixes an error when the driver requests to deactivate the link of an uninitialized device, resulting in a failure to reset. Next, a patch to fix multicast transmission failures seen after a driver reset. The final patch fixes mishandling of memory allocation failures during device initialization, which caused a kernel oops. ==================== Signed-off-by: -
Thomas Falcon authored
The return values for these memory allocations are unchecked, which may cause an oops if the driver does not handle them after a failure. Fix by checking the function's return code. Signed-off-by:
Thomas Falcon <tlfalcon@linux.ibm.com> Signed-off-by:
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Thomas Falcon authored
It was observed that multicast packets were no longer received after a device reset. The fix is to resend the current multicast list to the backing device after recovery. Signed-off-by:
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Thomas Falcon authored
Check driver state before halting it during a reset. If the driver is not running, do nothing. Otherwise, a request to deactivate a down link can cause an error and the reset will fail. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxDavid S. Miller authored
Saeed Mahameed says: ==================== Mellanox, mlx5 fixes 2019-06-07 This series introduces some fixes to mlx5 driver. Please pull and let me know if there is any problem. For -stable v4.17 ('net/mlx5: Avoid reloading already removed devices') For -stable v5.0 ('net/mlx5e: Avoid detaching non-existing netdev under switchdev mode') For -stable v5.1 ('net/mlx5e: Fix source port matching in fdb peer flow rule') ('net/mlx5e: Support tagged tunnel over bond') ('net/mlx5e: Add ndo_set_feature for uplink representor') ('net/mlx5: Update pci error handler entries and command translation') ==================== Signed-off-by: -
David S. Miller authored
Merge tag 'linux-can-fixes-for-5.2-20190607' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can Marc Kleine-Budde says: ==================== pull-request: can 2019-06-07 this is a pull reqeust of 9 patches for net/master. The first patch is by Alexander Dahl and removes a duplicate menu entry from the Kconfig. The next patch by Joakim Zhang fixes the timeout in the flexcan driver when setting small bit rates. Anssi Hannula's patch for the xilinx_can driver fixes the bittiming_const for CAN FD core. The two patches by Sean Nyekjaer bring mcp25625 to the existing mcp251x driver. The patch by Eugen Hristev implements an errata for the m_can driver. YueHaibing's patch fixes the error handling ing can_init(). The patch by Fabio Estevam for the flexcan driver removes an unneeded registration message during flexcan_probe(). And the last patch is by Willem de Bruijn and adds the missing purging the socket error queue on sock destruct. ==================== Signed-off-by:
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- 09 Jun, 2019 4 commits
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George Wilkie authored
If you configure a route with multiple labels, e.g. ip route add 10.10.3.0/24 encap mpls 16/100 via 10.10.2.2 dev ens4 A warning is logged: kernel: [ 130.561819] netlink: 'ip': attribute type 1 has an invalid length. This happens because mpls_iptunnel_policy has set the type of MPLS_IPTUNNEL_DST to fixed size NLA_U32. Change it to a minimum size. nla_get_labels() does the remaining validation. Fixes: e3e4712e ("mpls: ip tunnel support") Signed-off-by:
George Wilkie <gwilkie@vyatta.att-mail.com> Reviewed-by:
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Michael Schmitz authored
[Resent to net instead of net-next - may clash with Anders Roxell's patch series addressing duplicate module names] Commit 31dd83b9 ("net-next: phy: new Asix Electronics PHY driver") introduced a new PHY driver drivers/net/phy/asix.c that causes a module name conflict with a pre-existiting driver (drivers/net/usb/asix.c). The PHY driver is used by the X-Surf 100 ethernet card driver, and loaded by that driver via its PHY ID. A rename of the driver looks unproblematic. Rename PHY driver to ax88796b.c in order to resolve name conflict. Signed-off-by:
Michael Schmitz <schmitzmic@gmail.com> Tested-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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Eric Dumazet authored
Before taking a refcount, make sure the object is not already scheduled for deletion. Same fix is needed in ipv6_flowlabel_opt() Fixes: 18367681 ("ipv6 flowlabel: Convert np->ipv6_fl_list to RCU.") Signed-off-by:
Eric Dumazet <edumazet@google.com> Cc: Willem de Bruijn <willemb@google.com> Signed-off-by:
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Enrico Weigelt authored
fix an uninitialized variable: CC net/ipv4/fib_semantics.o net/ipv4/fib_semantics.c: In function 'fib_check_nh_v4_gw': net/ipv4/fib_semantics.c:1027:12: warning: 'err' may be used uninitialized in this function [-Wmaybe-uninitialized] if (!tbl || err) { ^~ Signed-off-by:Enrico Weigelt <info@metux.net> Signed-off-by:
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- 07 Jun, 2019 13 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller authored
Daniel Borkmann says: ==================== pull-request: bpf 2019-06-07 The following pull-request contains BPF updates for your *net* tree. The main changes are: 1) Fix several bugs in riscv64 JIT code emission which forgot to clear high 32-bits for alu32 ops, from Björn and Luke with selftests covering all relevant BPF alu ops from Björn and Jiong. 2) Two fixes for UDP BPF reuseport that avoid calling the program in case of __udp6_lib_err and UDP GRO which broke reuseport_select_sock() assumption that skb->data is pointing to transport header, from Martin. 3) Two fixes for BPF sockmap: a use-after-free from sleep in psock's backlog workqueue, and a missing restore of sk_write_space when psock gets dropped, from Jakub and John. 4) Fix unconnected UDP sendmsg hook API which is insufficient as-is since it breaks standard applications like DNS if reverse NAT is not performed upon receive, from Daniel. 5) Fix an out-of-bounds read in __bpf_skc_lookup which in case of AF_INET6 fails to verify that the length of the tuple is long enough, from Lorenz. 6) Fix libbpf's libbpf__probe_raw_btf to return an fd instead of 0/1 (for {un,}successful probe) as that is expected to be propagated as an fd to load_sk_storage_btf() and thus closing the wrong descriptor otherwise, from Michal. 7) Fix bpftool's JSON output for the case when a lookup fails, from Krzesimir. 8) Minor misc fixes in docs, samples and selftests, from various others. ==================== Signed-off-by: -
Eli Britstein authored
Stacked devices like bond interface may have a VLAN device on top of them. Detect lag state correctly under this condition, and return the correct routed net device, according to it the encap header is built. Fixes: e32ee6c7 ("net/mlx5e: Support tunnel encap over tagged Ethernet") Signed-off-by:
Eli Britstein <elibr@mellanox.com> Reviewed-by:
Roi Dayan <roid@mellanox.com> Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com>
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Alaa Hleihel authored
After introducing dedicated uplink representor, the netdev instance set over the esw manager vport (PF) became no longer in use, so it was removed in the cited commit once we're on switchdev mode. However, the mlx5e_detach function was not updated accordingly, and it still tries to detach a non-existing netdev, causing a kernel crash. This patch fixes this issue. Fixes: aec002f6 ("net/mlx5e: Uninstantiate esw manager vport netdev on switchdev mode") Signed-off-by:
Alaa Hleihel <alaa@mellanox.com> Reviewed-by:
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Raed Salem authored
The cited commit changed the initialization placement of the eswitch attributes so it is done prior to parse tc actions function call, including among others the in_rep and in_mdev fields which are mistakenly reassigned inside the parse actions function. This breaks the source port matching criteria of the peer redirect rule. Fix by removing the now redundant reassignment of the already initialized fields. Fixes: 988ab9c7 ("net/mlx5e: Introduce mlx5e_flow_esw_attr_init() helper") Signed-off-by:
Raed Salem <raeds@mellanox.com> Reviewed-by:
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Shay Agroskin authored
The TX queue index returned by the fallback function ranges between [0,NUM CHANNELS - 1] if QoS isn't set and [0, (NUM CHANNELS)*(NUM TCs) -1] otherwise. Our HW uses different TC mapping than the fallback function (which is denoted as 'up', user priority) so we only need to extract a channel number out of the returned value. Since (NUM CHANNELS)*(NUM TCs) is a relatively small number, using reciprocal scale almost always returns zero. We instead access the 'txq2sq' table to extract the sq (and with it the channel number) associated with the tx queue, thus getting a more evenly distributed channel number. Perf: Rx/Tx side with Intel(R) Xeon(R) Silver 4108 CPU @ 1.80GHz and ConnectX-5. Used 'iperf' UDP traffic, 10 threads, and priority 5. Before: 0.566Mpps After: 2.37Mpps As expected, releasing the existing bottleneck of steering all traffic to TX queue zero significantly improves transmission rates. Fixes: 7ccdd084 ("net/mlx5e: Fix select queue callback") Signed-off-by:
Shay Agroskin <shayag@mellanox.com> Reviewed-by:
Tariq Toukan <tariqt@mellanox.com> Signed-off-by:
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Chris Mi authored
After we have a dedicated uplink representor, the new netdev ops doesn't support ndo_set_feature. Because of that, we can't change some features, eg. rxvlan. Now add it back. In this patch, I also do a cleanup for the features flag handling, eg. remove duplicate NETIF_F_HW_TC flag setting. Fixes: aec002f6 ("net/mlx5e: Uninstantiate esw manager vport netdev on switchdev mode") Signed-off-by:
Chris Mi <chrism@mellanox.com> Reviewed-by:
Vlad Buslov <vladbu@mellanox.com> Signed-off-by:
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Alaa Hleihel authored
Prior to reloading a device we must first verify that it was not already removed. Otherwise, the attempt to remove the device will do nothing, and in that case we will end up proceeding with adding an new device that no one was expecting to remove, leaving behind used resources such as EQs that causes a failure to destroy comp EQs and syndrome (0x30f433). Fix that by making sure that we try to remove and add a device (based on a protocol) only if the device is already added. Fixes: c5447c70 ("net/mlx5: E-Switch, Reload IB interface when switching devlink modes") Signed-off-by:
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Edward Srouji authored
Add missing entries for create/destroy UCTX and UMEM commands. This could get us wrong "unknown FW command" error in flows where we unbind the device or reset the driver. Also the translation of these commands from opcodes to string was missing. Fixes: 6e3722ba ("IB/mlx5: Use the correct commands for UMEM and UCTX allocation") Signed-off-by:
Edward Srouji <edwards@mellanox.com> Signed-off-by:
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Willem de Bruijn authored
CAN supports software tx timestamps as of the below commit. Purge any queued timestamp packets on socket destroy. Fixes: 51f31cab ("ip: support for TX timestamps on UDP and RAW sockets") Reported-by: syzbot+a90604060cb40f5bdd16@syzkaller.appspotmail.com Signed-off-by:
Marc Kleine-Budde <mkl@pengutronix.de>
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Fabio Estevam authored
Currently the following message is observed when the flexcan driver is probed: flexcan 2090000.flexcan: device registered (reg_base=(ptrval), irq=23) The reason for printing 'ptrval' is explained at Documentation/core-api/printk-formats.rst: "Pointers printed without a specifier extension (i.e unadorned %p) are hashed to prevent leaking information about the kernel memory layout. This has the added benefit of providing a unique identifier. On 64-bit machines the first 32 bits are zeroed. The kernel will print ``(ptrval)`` until it gathers enough entropy." Instead of passing %pK, which can print the correct address, simply remove the entire message as it is not really that useful. Signed-off-by:
Fabio Estevam <festevam@gmail.com> Signed-off-by:
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YueHaibing authored
This patch add error path for can_init() to avoid possible crash if some error occurs. Fixes: 0d66548a ("[CAN]: Add PF_CAN core module") Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Acked-by:
Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by:
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Eugen Hristev authored
During frame reception while the MCAN is in Error Passive state and the Receive Error Counter has thevalue MCAN_ECR.REC = 127, it may happen that MCAN_IR.MRAF is set although there was no Message RAM access failure. If MCAN_IR.MRAF is enabled, an interrupt to the Host CPU is generated. Work around: The Message RAM Access Failure interrupt routine needs to check whether MCAN_ECR.RP = '1' and MCAN_ECR.REC = '127'. In this case, reset MCAN_IR.MRAF. No further action is required. This affects versions older than 3.2.0 Errata explained on Sama5d2 SoC which includes this hardware block: http://ww1.microchip.com/downloads/en/DeviceDoc/SAMA5D2-Family-Silicon-Errata-and-Data-Sheet-Clarification-DS80000803B.pdf chapter 6.2 Reproducibility: If 2 devices with m_can are connected back to back, configuring different bitrate on them will lead to interrupt storm on the receiving side, with error "Message RAM access failure occurred". Another way is to have a bad hardware connection. Bad wire connection can lead to this issue as well. This patch fixes the issue according to provided workaround. Signed-off-by:Eugen Hristev <eugen.hristev@microchip.com> Reviewed-by:
Ludovic Desroches <ludovic.desroches@microchip.com> Signed-off-by:
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Sean Nyekjaer authored
Fully compatible with mcp2515, the mcp25625 have integrated transceiver. This patch adds support for the mcp25625 to the existing mcp251x driver. Signed-off-by:
Sean Nyekjaer <sean@geanix.com> Signed-off-by:
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