udp4_lib_lookup2 identifier - Linux source code next-20260811

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linux

Versions

FIXME
- FIXME
  - next-20260811

Defined in 1 files as a function:

net/ipv4/udp.c, line 459 (as a function)

Referenced in 1 files:

net/ipv4/udp.c
- line 689
- line 714

Smatch caller information:

net/ipv4/udp.c __udp4_lib_lookup() -> udp4_lib_lookup2()

Type	Parameter	Key	Value
PARAM_VALUE	0	net	4096-ptr_max
PARAM_VALUE	0	net->ipv4.udp_table	4096-ptr_max
PARAM_VALUE	8	skb	0,4096-ptr_max
PARAM_VALUE	8	skb->_skb_refdst	1-u64max
PARAM_VALUE	8	skb->csum_complete_sw	1
PARAM_VALUE	8	skb->dev	4096-ptr_max
PARAM_VALUE	8	skb->dev->ip6_ptr->mc_query_work.wq->dfl_pwq	0-s64max
PARAM_VALUE	8	skb->dev->ip6_ptr->mc_query_work.wq->saved_max_active	s32min-s32max
PARAM_VALUE	8	skb->dev->ip6_ptr->mc_query_work.wq->saved_min_active	s32min-s32max
PARAM_VALUE	8	skb->dev->ip6_ptr->mc_report_work.wq->dfl_pwq	0-s64max
PARAM_VALUE	8	skb->dev->ip6_ptr->mc_report_work.wq->saved_max_active	s32min-s32max
PARAM_VALUE	8	skb->dev->ip6_ptr->mc_report_work.wq->saved_min_active	s32min-s32max
PARAM_VALUE	8	skb->dev->ip6_ptr->stats.proc_dir_entry	0,4806605944481423360
PARAM_VALUE	8	skb->dev->linkwatch_dev_tracker->alloc_stack_handle	0-4294967295
PARAM_VALUE	8	skb->dev->linkwatch_dev_tracker->free_stack_handle	0-4294967295
PARAM_VALUE	8	skb->dev->nd_net.net	4096-ptr_max
PARAM_VALUE	8	skb->dev->nd_net.net->gen->s.len	0-s32max
PARAM_VALUE	8	skb->dev->nd_net.net->ipv4.fqdir->f->frag_expire	0,663510801442193408,1753052602134376448,4007388366431105024,8876081723503042560
PARAM_VALUE	8	skb->dev->nd_net.net->ipv4.fqdir->f->qsize	0,304,320
PARAM_VALUE	8	skb->dev->ndisc_ops->fill_addr_option	4096-ptr_max
PARAM_VALUE	8	skb->dev->ndisc_ops->parse_options	4096-ptr_max
PARAM_VALUE	8	skb->dev->ndisc_ops->update	4096-ptr_max
PARAM_VALUE	8	skb->dev->rtnl_link_ops->maxtype	0-6,8-10,15,18,20,22,24,34,50
PARAM_VALUE	8	skb->dev->rtnl_link_ops->priv_size	0,8,32,40,48,56,88,112,120,144,160,224,240,256,296,616,624,728,744,1056,1128,1336,1616,2176,2240,2272,2560,3296,3544,3552,9688-u64max
PARAM_VALUE	8	skb->ip_summed	0,2-3
PARAM_VALUE	8	skb->next->sk->ns_tracker->alloc_stack_handle	0-4294967295
PARAM_VALUE	8	skb->next->sk->ns_tracker->dead	0-1
PARAM_VALUE	8	skb->next->sk->ns_tracker->free_stack_handle	0-4294967295
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->thread_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	8	skb->sk	0,4096-ptr_max
PARAM_VALUE	8	skb->sk->__req_common.skc_flags	0
PARAM_VALUE	8	skb->sk->__req_common.skc_listener	0
PARAM_VALUE	8	skb->sk->__req_common.skc_tw_dr	0
PARAM_VALUE	8	skb->sk->__sk_common.skc_net.net->xfrm.nat_keepalive_work.wq->dfl_pwq	0-s64max
PARAM_VALUE	8	skb->sk->__sk_common.skc_net.net->xfrm.nat_keepalive_work.wq->saved_max_active	s32min-s32max
PARAM_VALUE	8	skb->sk->__sk_common.skc_net.net->xfrm.nat_keepalive_work.wq->saved_min_active	s32min-s32max
PARAM_VALUE	8	skb->sk->__sk_common.skc_u16hashes	0-u32max
PARAM_VALUE	8	skb->sk->ns_tracker->alloc_stack_handle	0-4294967295
PARAM_VALUE	8	skb->sk->ns_tracker->dead	0-1
PARAM_VALUE	8	skb->sk->ns_tracker->free_stack_handle	0-4294967295
PARAM_VALUE	8	skb->sk->sk_peer_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->sk->sk_peer_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	8	skb->sk->sk_peer_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->sk->sk_peer_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	8	skb->sk->sk_peer_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->sk->sk_peer_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	8	skb->sk->sk_peer_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->sk->sk_peer_cred->thread_keyring->user->qnkeys	s32min-s32max
BUF_SIZE	7	hslot2	96
BUF_SIZE	8	skb	(-1)-s32max
BUF_SIZE	8	skb	(-1)-s32max
DATA_SOURCE	0	net	$0
DATA_SOURCE	1	saddr	$1
DATA_SOURCE	2	sport	$2
DATA_SOURCE	3	daddr	$3
DATA_SOURCE	4	hnum	$4
DATA_SOURCE	5	dif	$5
DATA_SOURCE	6	sdif	$6
DATA_SOURCE	7	hslot2	r udp_hashslot2
DATA_SOURCE	8	skb	$7
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	8	skb->csum	0-4294967040[c]
HOST_DATA	8	skb->csum_offset	0-u16max
HOST_DATA	8	skb->data_len	0-u32max[c]
HOST_DATA	8	skb->len	0-4294967294[c]
HOST_DATA	8	skb->prev->csum_offset	0-u16max
HOST_DATA	8	skb->prev->data_len	0-u32max[c]
HOST_DATA	8	skb->prev->len	1-u32max[c]
HOST_DATA	8	skb->prev->tstamp	500000002-4294967299794967295[c]
HOST_DATA	8	skb->tstamp	500000002-4294967299794967295[c]
HOST_DATA	8	skb->users.refs.counter	s32min-0,2-s32max
HOST_DATA	8	*skb->data	0-255
USER_DATA	1	saddr	0-u32max[u]
USER_DATA	2	sport	0-u16max
USER_DATA	3	daddr	0-u32max[u]
USER_DATA	4	hnum	0-u16max
USER_DATA	5	dif	s32min-s32max
NO_OVERFLOW_SIMPLE	8	skb->data_len
NO_OVERFLOW_SIMPLE	8	skb->dev->group
NO_OVERFLOW_SIMPLE	8	skb->dev->num_tc
NO_OVERFLOW_SIMPLE	8	skb->dev->proto_down
NO_OVERFLOW_SIMPLE	8	skb->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE	8	skb->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE	8	skb->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE	8	skb->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE	8	skb->dev->tx_queue_len
NO_OVERFLOW_SIMPLE	8	skb->end
NO_OVERFLOW_SIMPLE	8	skb->len
NO_OVERFLOW_SIMPLE	8	skb->next->end
NO_OVERFLOW_SIMPLE	8	skb->next->len
NO_OVERFLOW_SIMPLE	8	skb->next->tail
NO_OVERFLOW_SIMPLE	8	skb->next->truesize
NO_OVERFLOW_SIMPLE	8	skb->prev->end
NO_OVERFLOW_SIMPLE	8	skb->prev->len
NO_OVERFLOW_SIMPLE	8	skb->prev->tail
NO_OVERFLOW_SIMPLE	8	skb->prev->truesize
NO_OVERFLOW_SIMPLE	8	skb->sk->sk_backlog.len
NO_OVERFLOW_SIMPLE	8	skb->tail
NO_OVERFLOW_SIMPLE	8	skb->truesize
UNITS	0	net	unit_byte
UNITS	1	saddr	unit_byte
UNITS	3	daddr	unit_byte
UNITS	5	dif	unit_array_size
UNITS	6	sdif	unit_array_size
UNITS	8	skb	unit_byte
HALF_LOCKED2		rcu_read

net/ipv4/udp.c __udp4_lib_lookup() -> udp4_lib_lookup2()

Type	Parameter	Key	Value
PARAM_VALUE	0	net	4096-ptr_max
PARAM_VALUE	0	net->ipv4.udp_table	4096-ptr_max
PARAM_VALUE	3	daddr	0
PARAM_VALUE	8	skb	0,4096-ptr_max
PARAM_VALUE	8	skb->_skb_refdst	1-u64max
PARAM_VALUE	8	skb->csum_complete_sw	1
PARAM_VALUE	8	skb->dev	4096-ptr_max
PARAM_VALUE	8	skb->dev->ip6_ptr->mc_query_work.wq->dfl_pwq	0-s64max
PARAM_VALUE	8	skb->dev->ip6_ptr->mc_query_work.wq->saved_max_active	s32min-s32max
PARAM_VALUE	8	skb->dev->ip6_ptr->mc_query_work.wq->saved_min_active	s32min-s32max
PARAM_VALUE	8	skb->dev->ip6_ptr->mc_report_work.wq->dfl_pwq	0-s64max
PARAM_VALUE	8	skb->dev->ip6_ptr->mc_report_work.wq->saved_max_active	s32min-s32max
PARAM_VALUE	8	skb->dev->ip6_ptr->mc_report_work.wq->saved_min_active	s32min-s32max
PARAM_VALUE	8	skb->dev->ip6_ptr->stats.proc_dir_entry	0,4806605944481423360
PARAM_VALUE	8	skb->dev->linkwatch_dev_tracker->alloc_stack_handle	0-4294967295
PARAM_VALUE	8	skb->dev->linkwatch_dev_tracker->free_stack_handle	0-4294967295
PARAM_VALUE	8	skb->dev->nd_net.net	4096-ptr_max
PARAM_VALUE	8	skb->dev->nd_net.net->gen->s.len	0-s32max
PARAM_VALUE	8	skb->dev->nd_net.net->ipv4.fqdir->f->frag_expire	0,663510801442193408,1753052602134376448,4007388366431105024,8876081723503042560
PARAM_VALUE	8	skb->dev->nd_net.net->ipv4.fqdir->f->qsize	0,304,320
PARAM_VALUE	8	skb->dev->ndisc_ops->fill_addr_option	4096-ptr_max
PARAM_VALUE	8	skb->dev->ndisc_ops->parse_options	4096-ptr_max
PARAM_VALUE	8	skb->dev->ndisc_ops->update	4096-ptr_max
PARAM_VALUE	8	skb->dev->rtnl_link_ops->maxtype	0-6,8-10,15,18,20,22,24,34,50
PARAM_VALUE	8	skb->dev->rtnl_link_ops->priv_size	0,8,32,40,48,56,88,112,120,144,160,224,240,256,296,616,624,728,744,1056,1128,1336,1616,2176,2240,2272,2560,3296,3544,3552,9688-u64max
PARAM_VALUE	8	skb->ip_summed	0,2-3
PARAM_VALUE	8	skb->next->sk->ns_tracker->alloc_stack_handle	0-4294967295
PARAM_VALUE	8	skb->next->sk->ns_tracker->dead	0-1
PARAM_VALUE	8	skb->next->sk->ns_tracker->free_stack_handle	0-4294967295
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->next->sk->sk_peer_cred->thread_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	8	skb->sk	0,4096-ptr_max
PARAM_VALUE	8	skb->sk->__req_common.skc_flags	0
PARAM_VALUE	8	skb->sk->__req_common.skc_listener	0
PARAM_VALUE	8	skb->sk->__req_common.skc_tw_dr	0
PARAM_VALUE	8	skb->sk->__sk_common.skc_net.net->xfrm.nat_keepalive_work.wq->dfl_pwq	0-s64max
PARAM_VALUE	8	skb->sk->__sk_common.skc_net.net->xfrm.nat_keepalive_work.wq->saved_max_active	s32min-s32max
PARAM_VALUE	8	skb->sk->__sk_common.skc_net.net->xfrm.nat_keepalive_work.wq->saved_min_active	s32min-s32max
PARAM_VALUE	8	skb->sk->__sk_common.skc_u16hashes	0-u32max
PARAM_VALUE	8	skb->sk->ns_tracker->alloc_stack_handle	0-4294967295
PARAM_VALUE	8	skb->sk->ns_tracker->dead	0-1
PARAM_VALUE	8	skb->sk->ns_tracker->free_stack_handle	0-4294967295
PARAM_VALUE	8	skb->sk->sk_peer_cred->process_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->sk->sk_peer_cred->process_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	8	skb->sk->sk_peer_cred->request_key_auth->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->sk->sk_peer_cred->request_key_auth->user->qnkeys	s32min-s32max
PARAM_VALUE	8	skb->sk->sk_peer_cred->session_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->sk->sk_peer_cred->session_keyring->user->qnkeys	s32min-s32max
PARAM_VALUE	8	skb->sk->sk_peer_cred->thread_keyring->user->qnbytes	s32min-s32max
PARAM_VALUE	8	skb->sk->sk_peer_cred->thread_keyring->user->qnkeys	s32min-s32max
BUF_SIZE	7	hslot2	96
BUF_SIZE	8	skb	(-1)-s32max
BUF_SIZE	8	skb	(-1)-s32max
DATA_SOURCE	0	net	$0
DATA_SOURCE	1	saddr	$1
DATA_SOURCE	2	sport	$2
DATA_SOURCE	4	hnum	$4
DATA_SOURCE	5	dif	$5
DATA_SOURCE	6	sdif	$6
DATA_SOURCE	7	hslot2	r udp_hashslot2
DATA_SOURCE	8	skb	$7
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	8	skb->csum	0-4294967040[c]
HOST_DATA	8	skb->csum_offset	0-u16max
HOST_DATA	8	skb->data_len	0-u32max[c]
HOST_DATA	8	skb->len	0-4294967294[c]
HOST_DATA	8	skb->prev->csum_offset	0-u16max
HOST_DATA	8	skb->prev->data_len	0-u32max[c]
HOST_DATA	8	skb->prev->len	1-u32max[c]
HOST_DATA	8	skb->prev->tstamp	500000002-4294967299794967295[c]
HOST_DATA	8	skb->tstamp	500000002-4294967299794967295[c]
HOST_DATA	8	skb->users.refs.counter	s32min-0,2-s32max
HOST_DATA	8	*skb->data	0-255
USER_DATA	1	saddr	0-u32max[u]
USER_DATA	2	sport	0-u16max
USER_DATA	4	hnum	0-u16max
USER_DATA	5	dif	s32min-s32max
NO_OVERFLOW_SIMPLE	8	skb->data_len
NO_OVERFLOW_SIMPLE	8	skb->dev->group
NO_OVERFLOW_SIMPLE	8	skb->dev->num_tc
NO_OVERFLOW_SIMPLE	8	skb->dev->proto_down
NO_OVERFLOW_SIMPLE	8	skb->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE	8	skb->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE	8	skb->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE	8	skb->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE	8	skb->dev->tx_queue_len
NO_OVERFLOW_SIMPLE	8	skb->end
NO_OVERFLOW_SIMPLE	8	skb->len
NO_OVERFLOW_SIMPLE	8	skb->next->end
NO_OVERFLOW_SIMPLE	8	skb->next->len
NO_OVERFLOW_SIMPLE	8	skb->next->tail
NO_OVERFLOW_SIMPLE	8	skb->next->truesize
NO_OVERFLOW_SIMPLE	8	skb->prev->end
NO_OVERFLOW_SIMPLE	8	skb->prev->len
NO_OVERFLOW_SIMPLE	8	skb->prev->tail
NO_OVERFLOW_SIMPLE	8	skb->prev->truesize
NO_OVERFLOW_SIMPLE	8	skb->sk->sk_backlog.len
NO_OVERFLOW_SIMPLE	8	skb->tail
NO_OVERFLOW_SIMPLE	8	skb->truesize
UNITS	0	net	unit_byte
UNITS	1	saddr	unit_byte
UNITS	5	dif	unit_array_size
UNITS	6	sdif	unit_array_size
UNITS	8	skb	unit_byte
HALF_LOCKED2		rcu_read