Alexander Hölzl
1abecca55d
can: j1939: j1939_sk_send_loop(): fix unable to send messages with data length zero ...
commit 44de577e61ed239db09f0da9d436866bef9b77dd upstream.
The J1939 standard requires the transmission of messages of length 0.
For example proprietary messages are specified with a data length of 0
to 1785. The transmission of such messages is not possible. Sending
results in no error being returned but no corresponding can frame
being generated.
Enable the transmission of zero length J1939 messages. In order to
facilitate this two changes are necessary:
1) If the transmission of a new message is requested from user space
the message is segmented in j1939_sk_send_loop(). Let the segmentation
take into account zero length messages, do not terminate immediately,
queue the corresponding skb.
2) j1939_session_skb_get_by_offset() selects the next skb to transmit
for a session. Take into account that there might be zero length skbs
in the queue.
Signed-off-by: Alexander Hölzl <alexander.hoelzl@gmx.net>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://patch.msgid.link/20250205174651.103238-1-alexander.hoelzl@gmx.net
Fixes: 9d71dd0c70stable@vger.kernel.org
[mkl: commit message rephrased]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-03-13 12:43:16 +01:00
9p/xen: fix release of IRQ
2024-12-14 19:44:41 +01:00
net: 802: LLC+SNAP OID:PID lookup on start of skb data
2025-02-01 18:18:45 +01:00
batman-adv: fix panic during interface removal
2025-03-13 12:43:14 +01:00
Bluetooth: L2CAP: handle NULL sock pointer in l2cap_sock_alloc
2025-03-13 12:43:07 +01:00
netfilter: Replace zero-length array with flexible-array member
2025-01-09 13:23:35 +01:00
can: j1939: j1939_sk_send_loop(): fix unable to send messages with data length zero
2025-03-13 12:43:16 +01:00
libceph: fix race between delayed_work() and ceph_monc_stop()
2024-07-18 11:40:55 +02:00
net: let net.core.dev_weight always be non-zero
2025-03-13 12:42:55 +01:00
net: fix data-races around sk->sk_forward_alloc
2025-02-01 18:18:52 +01:00
net: ieee802154: do not leave a dangling sk pointer in ieee802154_create()
2024-12-14 19:44:51 +01:00
udp: gso: do not drop small packets when PMTU reduces
2025-03-13 12:43:06 +01:00
ndisc: ndisc_send_redirect() must use dev_get_by_index_rcu()
2025-03-13 12:43:12 +01:00
s390/iucv: fix receive buffer virtual vs physical address confusion
2024-09-04 13:14:57 +02:00
kcm: Serialise kcm_sendmsg() for the same socket.
2024-09-04 13:14:59 +02:00
genetlink: hold RCU in genlmsg_mcast()
2024-11-08 16:20:50 +01:00
net: llc: reset skb->transport_header
2025-01-09 13:23:35 +01:00
wifi: mac80211: wake the queues in case of failure in resume
2025-01-09 13:23:35 +01:00
mac802154: check local interfaces before deleting sdata list
2025-02-01 18:18:50 +01:00
net/ncsi: wait for the last response to Deselect Package before configuring channel
2025-03-13 12:43:11 +01:00
netfilter: Replace zero-length array with flexible-array member
2025-01-09 13:23:35 +01:00
netlink: terminate outstanding dump on socket close
2024-12-14 19:44:18 +01:00
netrom: check buffer length before accessing it
2025-01-09 13:23:35 +01:00
NFC: nci: Add bounds checking in nci_hci_create_pipe()
2025-03-13 12:43:11 +01:00
openvswitch: Set the skbuff pkt_type for proper pmtud support.
2024-06-16 13:28:45 +02:00
af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK
2025-01-09 13:23:35 +01:00
phonet: fix rtm_phonet_notify() skb allocation
2024-05-17 11:43:54 +02:00
net: qrtr: Update packets cloning when broadcasting
2024-11-08 16:20:33 +01:00
net:rds: Fix possible deadlock in rds_message_put
2024-09-04 13:15:03 +02:00
net: rfkill: gpio: Add check for clk_enable()
2024-12-14 19:44:27 +01:00
net: rose: lock the socket in rose_bind()
2025-03-13 12:43:06 +01:00
netem: Update sch->q.qlen before qdisc_tree_reduce_backlog()
2025-03-13 12:43:06 +01:00
sctp: sysctl: rto_min/max: avoid using current->nsproxy
2025-02-01 18:18:49 +01:00
net/smc: check sndbuf_space again after NOSPACE flag is set in smc_poll
2025-01-09 13:23:27 +01:00
sunrpc: clear XPRT_SOCK_UPD_TIMEOUT when reset transport
2024-12-14 19:44:42 +01:00
tipc: fix NULL deref in cleanup_bearer()
2024-12-19 18:05:03 +01:00
tls: Fix tls_sw_sendmsg error handling
2025-02-01 18:18:45 +01:00
af_unix: Remove put_pid()/put_cred() in copy_peercred().
2024-09-12 11:03:52 +02:00
vsock: Allow retrying on connect() failure
2025-03-13 12:43:00 +01:00
genetlink: hold RCU in genlmsg_mcast()
2024-11-08 16:20:50 +01:00
xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING
2024-06-16 13:28:52 +02:00
xfrm: validate new SA's prefixlen using SA family when sel.family is unset
2024-11-08 16:20:52 +01:00
1abecca55d