skb_split identifier - Linux source code next-20260811

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linux

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FIXME
- FIXME
  - next-20260811

Documented in 1 files:

net/core/skbuff.c, line 4225

Defined in 1 files as a prototype:

include/linux/skbuff.h, line 4273 (as a prototype)

Defined in 1 files as a function:

net/core/skbuff.c, line 4231 (as a function)

Referenced in 3 files:

Smatch caller information:

net/batman-adv/fragmentation.c batadv_frag_create() -> skb_split()

Type	Parameter	Key	Value
PARAM_VALUE	0	skb	4096-ptr_max
PARAM_VALUE	0	skb->data	4096-ptr_max
PARAM_VALUE	0	skb->dev->ethtool_ops->get_link_ext_state	0-s64max
PARAM_VALUE	0	skb->dev->ethtool_ops->get_mm_stats	0-s64max
PARAM_VALUE	0	skb->dev->ethtool_ops->rxfh_max_num_contexts	0-4294967295
PARAM_VALUE	0	skb->dev->ethtool_ops->supported_coalesce_params	0-4294967295
PARAM_VALUE	0	skb->dev->ip6_ptr->dead	s32min-s32max
PARAM_VALUE	0	skb->dev->ip6_ptr->mc_gq_running	0-255
PARAM_VALUE	0	skb->dev->ip6_ptr->mc_maxdelay	0-s64max
PARAM_VALUE	0	skb->dev->ip6_ptr->mc_qri	0-s64max
PARAM_VALUE	0	skb->dev->ip6_ptr->mc_qrv	0-255
PARAM_VALUE	0	skb->dev->ip6_ptr->ra_mtu	0-4294967295
PARAM_VALUE	0	skb->dev->linkwatch_dev_tracker->alloc_stack_handle	0-4294967295
PARAM_VALUE	0	skb->dev->linkwatch_dev_tracker->free_stack_handle	0-4294967295
PARAM_VALUE	0	skb->dev->nd_net.net->ipv4.fqdir->f->frag_expire	0,663510801442193408,1753052602134376448,4007388366431105024,8876081723503042560
PARAM_VALUE	0	skb->dev->nd_net.net->ipv4.fqdir->f->qsize	0,304,320
PARAM_VALUE	0	skb->dev->rtnl_link_ops->maxtype	0-6,8-10,15,18,20,22,24,34,50
PARAM_VALUE	0	skb->len	1-u32max
PARAM_VALUE	1	skb1	4096-ptr_max
PARAM_VALUE	1	skb1->data	4096-ptr_max
PARAM_VALUE	2	len	1-u32max
BUF_SIZE	0	skb	(-1)-s32max
BUF_SIZE	0	skb	(-1)-s32max
BUF_SIZE	1	skb1	(-1)-s32max
BUF_SIZE	1	skb1	(-1)-s32max
DATA_SOURCE	0	skb	$1
DATA_SOURCE	1	skb1	r dev_alloc_skb
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA	0	skb->csum_offset	0-u16max
HOST_DATA	0	skb->data_len	0-u32max[c]
HOST_DATA	0	skb->len	1-u32max[c]
HOST_DATA	0	skb->prev->csum_offset	0-u16max
HOST_DATA	0	skb->prev->data_len	0-u32max[c]
HOST_DATA	0	skb->prev->len	0-u32max[c]
HOST_DATA	0	skb->prev->tstamp	500000002-4294967299794967295[c]
HOST_DATA	0	skb->tstamp	500000002-4294967299794967295[c]
HOST_DATA	0	skb->users.refs.counter	s32min-0,2-s32max
HOST_DATA	0	*skb->data	0-255
HOST_DATA	2	len	1-u32max[c]
NO_OVERFLOW_SIMPLE	0	skb->data_len
NO_OVERFLOW_SIMPLE	0	skb->dev->group
NO_OVERFLOW_SIMPLE	0	skb->dev->num_tc
NO_OVERFLOW_SIMPLE	0	skb->dev->proto_down
NO_OVERFLOW_SIMPLE	0	skb->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE	0	skb->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE	0	skb->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE	0	skb->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE	0	skb->dev->tx_queue_len
NO_OVERFLOW_SIMPLE	0	skb->end
NO_OVERFLOW_SIMPLE	0	skb->extensions
NO_OVERFLOW_SIMPLE	0	skb->len
NO_OVERFLOW_SIMPLE	0	skb->next->end
NO_OVERFLOW_SIMPLE	0	skb->prev->end
NO_OVERFLOW_SIMPLE	0	skb->prev->len
NO_OVERFLOW_SIMPLE	0	skb->prev->tail
NO_OVERFLOW_SIMPLE	0	skb->prev->truesize
NO_OVERFLOW_SIMPLE	0	skb->sk->sk_backlog.len
NO_OVERFLOW_SIMPLE	0	skb->tail
NO_OVERFLOW_SIMPLE	0	skb->truesize
UNITS	2	len	unit_byte

net/ipv4/tcp_output.c tcp_fragment() -> skb_split()

Type	Parameter	Key	Value
PARAM_VALUE	0	skb	4096-ptr_max
PARAM_VALUE	0	skb->cb	4096-ptr_max
PARAM_VALUE	0	skb->dev->nd_net.net->ipv4.fqdir->f->frag_expire	0,663510801442193408,1753052602134376448,4007388366431105024,8876081723503042560
PARAM_VALUE	0	skb->dev->nd_net.net->ipv4.fqdir->f->qsize	0,304,320
PARAM_VALUE	0	skb->dev->ndisc_ops->fill_addr_option	4096-ptr_max
PARAM_VALUE	0	skb->dev->ndisc_ops->parse_options	4570881757937598464
PARAM_VALUE	0	skb->dev->ndisc_ops->update	8455145027589103616
PARAM_VALUE	0	skb->dev->rtnl_link_ops->maxtype	0-6,8-10,15,18,20,22,24,34,50
PARAM_VALUE	0	skb->dev->rtnl_link_ops->priv_size	0,8,32,48,56,88,112,120,144,160,224,240,256,296,616,624,728,736,744,1056,1128,1336,1616,2176,2240,2272,2560,3296,3544,3552,3720,9688-u64max
PARAM_VALUE	1	skb1	4096-ptr_max
PARAM_VALUE	1	skb1->cb	4096-ptr_max
PARAM_VALUE	1	skb1->data	4096-ptr_max
PARAM_VALUE	1	skb1->ip_summed	3
PARAM_VALUE	1	skb1->tcp_tsorted_anchor.next	4096-ptr_max
PARAM_VALUE	1	skb1->tcp_tsorted_anchor.next->next	4096-ptr_max
PARAM_VALUE	1	skb1->tcp_tsorted_anchor.prev	4096-ptr_max
PARAM_VALUE	1	skb1->tcp_tsorted_anchor.prev->next	4096-ptr_max
PARAM_VALUE	1	skb1->tcp_tsorted_anchor.prev->prev	4096-ptr_max
BUF_SIZE	1	skb1	320
BUF_SIZE	1	skb1	320
CAPPED_DATA	0	skb	1
CAPPED_DATA	2	len	1
DATA_SOURCE	0	skb	$2
DATA_SOURCE	1	skb1	r tcp_stream_alloc_skb
DATA_SOURCE	2	len	$3
PARAM_COMPARE	2	len	<= $0->len
CONSTRAINT	2	len	<=49
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA	0	skb->next->data_len	0-u32max[c]
HOST_DATA	0	skb->next->prev->data_len	0-u32max[c]
UNITS	2	len	unit_byte
HALF_LOCKED2		&sk->sk_lock.slock

net/ipv4/tcp_output.c tso_fragment() -> skb_split()

Type	Parameter	Key	Value
PARAM_VALUE	0	skb	4096-ptr_max
PARAM_VALUE	0	skb->cb	4096-ptr_max
PARAM_VALUE	0	skb->dev->ethtool_ops->get_link_ext_state	0-s64max
PARAM_VALUE	0	skb->dev->ethtool_ops->get_mm_stats	0-s64max
PARAM_VALUE	0	skb->dev->ethtool_ops->rxfh_max_num_contexts	0-4294967295
PARAM_VALUE	0	skb->dev->ethtool_ops->supported_coalesce_params	0-s64max
PARAM_VALUE	0	skb->dev->nd_net.net->ipv4.fqdir->f->frag_expire	0,663510801442193408,1753052602134376448,4007388366431105024,8876081723503042560
PARAM_VALUE	0	skb->dev->nd_net.net->ipv4.fqdir->f->qsize	0,304,320
PARAM_VALUE	0	skb->dev->ndisc_ops->fill_addr_option	4096-ptr_max
PARAM_VALUE	0	skb->dev->ndisc_ops->parse_options	4096-ptr_max
PARAM_VALUE	0	skb->dev->ndisc_ops->update	4096-ptr_max
PARAM_VALUE	0	skb->dev->rtnl_link_ops->maxtype	0-6,8-10,15,18,20,22,24,34,50
PARAM_VALUE	0	skb->dev->rtnl_link_ops->priv_size	0,8,32,40,48,56,88,112,120,144,160,224,240,256,296,616,624,728,736,744,1056,1128,1336,1616,2176,2240,2272,2560,3296,3544,3552,3720,9688-u64max
PARAM_VALUE	0	skb->len	1-u32max
PARAM_VALUE	1	skb1	4096-ptr_max
PARAM_VALUE	1	skb1->cb	4096-ptr_max
PARAM_VALUE	1	skb1->data	4096-ptr_max
PARAM_VALUE	1	skb1->ip_summed	3
PARAM_VALUE	1	skb1->tcp_tsorted_anchor.next	4096-ptr_max
PARAM_VALUE	1	skb1->tcp_tsorted_anchor.next->next	4096-ptr_max
PARAM_VALUE	1	skb1->tcp_tsorted_anchor.prev	4096-ptr_max
PARAM_VALUE	1	skb1->tcp_tsorted_anchor.prev->next	4096-ptr_max
PARAM_VALUE	1	skb1->tcp_tsorted_anchor.prev->prev	4096-ptr_max
PARAM_VALUE	2	len	0-4294967294
BUF_SIZE	1	skb1	320
BUF_SIZE	1	skb1	320
CAPPED_DATA	0	skb->len	1
CAPPED_DATA	2	len	1
DATA_SOURCE	0	skb	$1
DATA_SOURCE	1	skb1	r tcp_stream_alloc_skb
DATA_SOURCE	2	len	$2
CONSTRAINT	2	len	<49
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA	0	skb->next->data_len	0-u32max[c]
HOST_DATA	0	skb->next->prev->csum_offset	0-u16max
HOST_DATA	0	skb->next->prev->data_len	0-u32max[c]
HOST_DATA	0	skb->next->prev->len	0-u32max[c]
HOST_DATA	0	skb->next->prev->tstamp	500000002-4294967299794967295[c]
HOST_DATA	0	skb->prev->csum_offset	0-u16max
HOST_DATA	0	skb->prev->data_len	0-u32max[c]
HOST_DATA	0	skb->prev->len	0-u32max[c]
HOST_DATA	0	skb->prev->tstamp	500000002-4294967299794967295[c]
HOST_DATA	0	*skb->data	0-255
UNITS	2	len	unit_byte
HALF_LOCKED2		&sk->sk_callback_lock
HALF_LOCKED2		&sk->sk_lock.slock
HALF_LOCKED2		sk