inet_proto_csum_replace16 identifier - Linux source code next-20260811

Projects

linux

Versions

FIXME
- FIXME
  - next-20260811

Documented in 1 files:

net/core/utils.c, line 442

Defined in 1 files as a prototype:

include/net/checksum.h, line 151 (as a prototype)

Defined in 1 files as a function:

net/core/utils.c, line 459 (as a function)

Referenced in 6 files:

Smatch caller information:

net/ipv6/ip6_offload.c __tcpv6_gso_segment_csum() -> inet_proto_csum_replace16()

Type	Parameter	Key	Value
PARAM_VALUE	0	sum	4096-ptr_max
PARAM_VALUE	1	skb	4096-ptr_max
PARAM_VALUE	4	pseudohdr	1
BUF_SIZE	2	from	16
BUF_SIZE	3	to	16
DATA_SOURCE	1	skb	$0
NOCHECK_CALL
UNITS	1	skb	unit_byte

net/ipv4/udp_offload.c __udpv6_gso_segment_csum() -> inet_proto_csum_replace16()

Type	Parameter	Key	Value
PARAM_VALUE	0	sum	4096-ptr_max
PARAM_VALUE	0	*sum	1-u16max
PARAM_VALUE	1	skb	4096-ptr_max
PARAM_VALUE	4	pseudohdr	1
BUF_SIZE	2	from	16
BUF_SIZE	3	to	16
DATA_SOURCE	1	skb	$0
NOCHECK_CALL
UNITS	1	skb	unit_byte

net/netfilter/nf_nat_proto.c nf_nat_ipv6_csum_update() -> inet_proto_csum_replace16()

Type	Parameter	Key	Value
PARAM_VALUE	0	sum	4096-ptr_max
PARAM_VALUE	1	skb	4096-ptr_max
PARAM_VALUE	4	pseudohdr	1
BUF_SIZE	1	skb	(-1)-s32max
BUF_SIZE	1	skb	(-1)-s32max
BUF_SIZE	2	from	16
BUF_SIZE	3	to	16
DATA_SOURCE	0	sum	$2
DATA_SOURCE	1	skb	$0
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA	1	skb->csum_offset	0-u16max
HOST_DATA	1	skb->len	0-u32max[c]
HOST_DATA	1	skb->prev->csum_offset	0-u16max
HOST_DATA	1	skb->prev->data_len	0-u32max[c]
HOST_DATA	1	skb->prev->len	1-u32max[c]
HOST_DATA	1	skb->prev->tstamp	500000002-4294967299794967295[c]
HOST_DATA	1	skb->protocol	1-255
HOST_DATA	1	skb->tstamp	500000002-4294967299794967295[c]
HOST_DATA	1	skb->users.refs.counter	s32min-0,2-s32max
HOST_DATA	1	*skb->data	0-255
USER_DATA	0	*sum	0-u16max[u]
NO_OVERFLOW_SIMPLE	1	skb->data_len
NO_OVERFLOW_SIMPLE	1	skb->dev->group
NO_OVERFLOW_SIMPLE	1	skb->dev->num_tc
NO_OVERFLOW_SIMPLE	1	skb->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE	1	skb->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE	1	skb->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE	1	skb->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE	1	skb->dev->tx_queue_len
NO_OVERFLOW_SIMPLE	1	skb->end
NO_OVERFLOW_SIMPLE	1	skb->extensions
NO_OVERFLOW_SIMPLE	1	skb->len
NO_OVERFLOW_SIMPLE	1	skb->next->end
NO_OVERFLOW_SIMPLE	1	skb->prev->end
NO_OVERFLOW_SIMPLE	1	skb->prev->len
NO_OVERFLOW_SIMPLE	1	skb->prev->tail
NO_OVERFLOW_SIMPLE	1	skb->tail
NO_OVERFLOW_SIMPLE	1	skb->truesize
UNITS	1	skb	unit_byte
USER_PTR	0	sum

net/netfilter/nf_flow_table_ip.c nf_flow_nat_ipv6_tcp() -> inet_proto_csum_replace16()

Type	Parameter	Key	Value
PARAM_VALUE	0	sum	4096-ptr_max
PARAM_VALUE	1	skb	4096-ptr_max
PARAM_VALUE	4	pseudohdr	1
BUF_SIZE	1	skb	(-1)-s32max
BUF_SIZE	1	skb	(-1)-s32max
BUF_SIZE	2	from	16
BUF_SIZE	3	to	16
DATA_SOURCE	1	skb	$0
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA	1	skb->csum_offset	0-u16max
HOST_DATA	1	skb->len	0-u32max[c]
HOST_DATA	1	skb->prev->csum_offset	0-u16max
HOST_DATA	1	skb->prev->data_len	0-u32max[c]
HOST_DATA	1	skb->prev->len	1-u32max[c]
HOST_DATA	1	skb->prev->tstamp	500000002-4294967299794967295[c]
HOST_DATA	1	skb->tstamp	500000002-4294967299794967295[c]
HOST_DATA	1	skb->users.refs.counter	s32min-0,2-s32max
HOST_DATA	1	*skb->data	0-255
NO_OVERFLOW_SIMPLE	1	skb->data_len
NO_OVERFLOW_SIMPLE	1	skb->dev->group
NO_OVERFLOW_SIMPLE	1	skb->dev->num_tc
NO_OVERFLOW_SIMPLE	1	skb->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE	1	skb->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE	1	skb->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE	1	skb->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE	1	skb->dev->tx_queue_len
NO_OVERFLOW_SIMPLE	1	skb->end
NO_OVERFLOW_SIMPLE	1	skb->extensions
NO_OVERFLOW_SIMPLE	1	skb->len
NO_OVERFLOW_SIMPLE	1	skb->next->end
NO_OVERFLOW_SIMPLE	1	skb->next->len
NO_OVERFLOW_SIMPLE	1	skb->prev->end
NO_OVERFLOW_SIMPLE	1	skb->prev->len
NO_OVERFLOW_SIMPLE	1	skb->prev->tail
NO_OVERFLOW_SIMPLE	1	skb->prev->truesize
NO_OVERFLOW_SIMPLE	1	skb->sk->sk_backlog.len
NO_OVERFLOW_SIMPLE	1	skb->tail
NO_OVERFLOW_SIMPLE	1	skb->truesize

net/netfilter/nf_flow_table_ip.c nf_flow_nat_ipv6_udp() -> inet_proto_csum_replace16()

Type	Parameter	Key	Value
PARAM_VALUE	0	sum	4096-ptr_max
PARAM_VALUE	1	skb	4096-ptr_max
PARAM_VALUE	4	pseudohdr	1
BUF_SIZE	1	skb	(-1)-s32max
BUF_SIZE	1	skb	(-1)-s32max
BUF_SIZE	2	from	16
BUF_SIZE	3	to	16
DATA_SOURCE	1	skb	$0
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA	1	skb->csum_offset	0-u16max
HOST_DATA	1	skb->len	0-u32max[c]
HOST_DATA	1	skb->prev->csum_offset	0-u16max
HOST_DATA	1	skb->prev->data_len	0-u32max[c]
HOST_DATA	1	skb->prev->len	1-u32max[c]
HOST_DATA	1	skb->prev->tstamp	500000002-4294967299794967295[c]
HOST_DATA	1	skb->tstamp	500000002-4294967299794967295[c]
HOST_DATA	1	skb->users.refs.counter	s32min-0,2-s32max
HOST_DATA	1	*skb->data	0-255
NO_OVERFLOW_SIMPLE	1	skb->data_len
NO_OVERFLOW_SIMPLE	1	skb->dev->group
NO_OVERFLOW_SIMPLE	1	skb->dev->num_tc
NO_OVERFLOW_SIMPLE	1	skb->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE	1	skb->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE	1	skb->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE	1	skb->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE	1	skb->dev->tx_queue_len
NO_OVERFLOW_SIMPLE	1	skb->end
NO_OVERFLOW_SIMPLE	1	skb->extensions
NO_OVERFLOW_SIMPLE	1	skb->len
NO_OVERFLOW_SIMPLE	1	skb->next->end
NO_OVERFLOW_SIMPLE	1	skb->next->len
NO_OVERFLOW_SIMPLE	1	skb->prev->end
NO_OVERFLOW_SIMPLE	1	skb->prev->len
NO_OVERFLOW_SIMPLE	1	skb->prev->tail
NO_OVERFLOW_SIMPLE	1	skb->prev->truesize
NO_OVERFLOW_SIMPLE	1	skb->sk->sk_backlog.len
NO_OVERFLOW_SIMPLE	1	skb->tail
NO_OVERFLOW_SIMPLE	1	skb->truesize

net/openvswitch/actions.c update_ipv6_checksum() -> inet_proto_csum_replace16()

Type	Parameter	Key	Value
PARAM_VALUE	0	sum	4096-ptr_max
PARAM_VALUE	1	skb	4096-ptr_max
PARAM_VALUE	3	to	8334115634874793984
PARAM_VALUE	4	pseudohdr	1
BUF_SIZE	1	skb	(-1)-s32max
BUF_SIZE	1	skb	(-1)-s32max
BUF_SIZE	2	from	16
BUF_SIZE	3	to	16
DATA_SOURCE	1	skb	$0
DATA_SOURCE	2	from	$2
DATA_SOURCE	3	to	$3
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA	1	skb->csum	0-192512[c]
HOST_DATA	1	skb->csum_offset	0-u16max
HOST_DATA	1	skb->inner_protocol	1-255
HOST_DATA	1	skb->len	0-u32max[c]
HOST_DATA	1	skb->prev->csum_offset	0-u16max
HOST_DATA	1	skb->prev->data_len	0-u32max[c]
HOST_DATA	1	skb->prev->len	1-u32max[c]
HOST_DATA	1	skb->prev->tstamp	500000002-4294967299794967295[c]
HOST_DATA	1	skb->protocol	1-255
HOST_DATA	1	skb->tstamp	500000002-4294967299794967295[c]
HOST_DATA	1	skb->users.refs.counter	s32min-0,2-s32max
HOST_DATA	1	*skb->data	0-255
NO_OVERFLOW_SIMPLE	1	skb->data_len
NO_OVERFLOW_SIMPLE	1	skb->dev->group
NO_OVERFLOW_SIMPLE	1	skb->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE	1	skb->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE	1	skb->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE	1	skb->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE	1	skb->dev->tx_queue_len
NO_OVERFLOW_SIMPLE	1	skb->end
NO_OVERFLOW_SIMPLE	1	skb->extensions
NO_OVERFLOW_SIMPLE	1	skb->len
NO_OVERFLOW_SIMPLE	1	skb->prev->end
NO_OVERFLOW_SIMPLE	1	skb->prev->len
NO_OVERFLOW_SIMPLE	1	skb->prev->tail
NO_OVERFLOW_SIMPLE	1	skb->prev->truesize
NO_OVERFLOW_SIMPLE	1	skb->tail
NO_OVERFLOW_SIMPLE	1	skb->truesize
UNITS	1	skb	unit_byte

net/openvswitch/actions.c update_ipv6_checksum() -> inet_proto_csum_replace16()

Type	Parameter	Key	Value
PARAM_VALUE	0	sum	4096-ptr_max
PARAM_VALUE	1	skb	4096-ptr_max
PARAM_VALUE	3	to	8334115634874793984
PARAM_VALUE	4	pseudohdr	1
BUF_SIZE	1	skb	(-1)-s32max
BUF_SIZE	1	skb	(-1)-s32max
BUF_SIZE	2	from	16
BUF_SIZE	3	to	16
DATA_SOURCE	1	skb	$0
DATA_SOURCE	2	from	$2
DATA_SOURCE	3	to	$3
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA	1	skb->csum	0-192512[c]
HOST_DATA	1	skb->csum_offset	0-u16max
HOST_DATA	1	skb->inner_protocol	1-255
HOST_DATA	1	skb->len	0-u32max[c]
HOST_DATA	1	skb->prev->csum_offset	0-u16max
HOST_DATA	1	skb->prev->data_len	0-u32max[c]
HOST_DATA	1	skb->prev->len	1-u32max[c]
HOST_DATA	1	skb->prev->tstamp	500000002-4294967299794967295[c]
HOST_DATA	1	skb->protocol	1-255
HOST_DATA	1	skb->tstamp	500000002-4294967299794967295[c]
HOST_DATA	1	skb->users.refs.counter	s32min-0,2-s32max
HOST_DATA	1	*skb->data	0-255
NO_OVERFLOW_SIMPLE	1	skb->data_len
NO_OVERFLOW_SIMPLE	1	skb->dev->group
NO_OVERFLOW_SIMPLE	1	skb->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE	1	skb->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE	1	skb->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE	1	skb->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE	1	skb->dev->tx_queue_len
NO_OVERFLOW_SIMPLE	1	skb->end
NO_OVERFLOW_SIMPLE	1	skb->extensions
NO_OVERFLOW_SIMPLE	1	skb->len
NO_OVERFLOW_SIMPLE	1	skb->prev->end
NO_OVERFLOW_SIMPLE	1	skb->prev->len
NO_OVERFLOW_SIMPLE	1	skb->prev->tail
NO_OVERFLOW_SIMPLE	1	skb->prev->truesize
NO_OVERFLOW_SIMPLE	1	skb->tail
NO_OVERFLOW_SIMPLE	1	skb->truesize
UNITS	1	skb	unit_byte

net/openvswitch/actions.c update_ipv6_checksum() -> inet_proto_csum_replace16()

Type	Parameter	Key	Value
PARAM_VALUE	0	sum	4096-ptr_max
PARAM_VALUE	1	skb	4096-ptr_max
PARAM_VALUE	3	to	8334115634874793984
PARAM_VALUE	4	pseudohdr	1
BUF_SIZE	1	skb	(-1)-s32max
BUF_SIZE	1	skb	(-1)-s32max
BUF_SIZE	2	from	16
BUF_SIZE	3	to	16
DATA_SOURCE	1	skb	$0
DATA_SOURCE	2	from	$2
DATA_SOURCE	3	to	$3
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA	1	skb->csum	0-192512[c]
HOST_DATA	1	skb->csum_offset	0-u16max
HOST_DATA	1	skb->inner_protocol	1-255
HOST_DATA	1	skb->len	0-u32max[c]
HOST_DATA	1	skb->prev->csum_offset	0-u16max
HOST_DATA	1	skb->prev->data_len	0-u32max[c]
HOST_DATA	1	skb->prev->len	1-u32max[c]
HOST_DATA	1	skb->prev->tstamp	500000002-4294967299794967295[c]
HOST_DATA	1	skb->protocol	1-255
HOST_DATA	1	skb->tstamp	500000002-4294967299794967295[c]
HOST_DATA	1	skb->users.refs.counter	s32min-0,2-s32max
HOST_DATA	1	*skb->data	0-255
NO_OVERFLOW_SIMPLE	1	skb->data_len
NO_OVERFLOW_SIMPLE	1	skb->dev->group
NO_OVERFLOW_SIMPLE	1	skb->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE	1	skb->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE	1	skb->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE	1	skb->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE	1	skb->dev->tx_queue_len
NO_OVERFLOW_SIMPLE	1	skb->end
NO_OVERFLOW_SIMPLE	1	skb->extensions
NO_OVERFLOW_SIMPLE	1	skb->len
NO_OVERFLOW_SIMPLE	1	skb->prev->end
NO_OVERFLOW_SIMPLE	1	skb->prev->len
NO_OVERFLOW_SIMPLE	1	skb->prev->tail
NO_OVERFLOW_SIMPLE	1	skb->prev->truesize
NO_OVERFLOW_SIMPLE	1	skb->tail
NO_OVERFLOW_SIMPLE	1	skb->truesize
UNITS	1	skb	unit_byte