csum_sub identifier - Linux source code next-20260811

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linux

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FIXME
- FIXME
  - next-20260811

Defined in 1 files as a function:

include/net/checksum.h, line 67 (as a function)

Referenced in 20 files:

Smatch caller information:

net/xfrm/xfrm_iptfs.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-192512[c]
LOCK2		&x->lock
LOCK2		bh
HALF_LOCKED2		rcu_read
TYPE_LOCK		(struct xfrm_state)->lock

net/sched/sch_choke.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-126976[c]
HALF_LOCKED2		rcu_read

net/sched/sch_netem.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-126976[c]
HALF_LOCKED2		rcu_read

drivers/net/geneve.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING

drivers/net/geneve.c IP6_ECN_set_ect1() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING

drivers/net/geneve.c geneve_opt_gro_hint_validate_csum() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		rcu_read

net/netfilter/utils.c nf_ip6_checksum() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-4294967040[c]

net/netfilter/utils.c nf_ip6_checksum() -> csum_sub()

Type	Parameter	Key	Value
PARAM_VALUE	0	csum	0
RX_PATH
TASK_NOT_RUNNING

net/netfilter/utils.c nf_ip6_checksum_partial() -> csum_sub()

Type	Parameter	Key	Value
PARAM_VALUE	0	csum	0
DATA_SOURCE	1	addend	r skb_checksum

net/ipv6/ip6_tunnel.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		rcu_read

net/ipv6/ip6_tunnel.c IP6_ECN_set_ect1() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		rcu_read

net/mac80211/tx.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
LOCK2		&fq->lock
LOCK2		bh
HALF_LOCKED2		&local->handle_wake_tx_queue_lock
HALF_LOCKED2		&rtwdev->txq_lock
HALF_LOCKED2		rcu_read
TYPE_LOCK		(struct fq)->lock

net/ipv4/tcp_offload.c csum_replace4() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	1	addend	$1
UNITS	1	addend	unit_byte

net/core/filter.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value

net/core/filter.c ____bpf_csum_diff() -> csum_sub()

Type	Parameter	Key	Value

net/core/filter.c csum_replace4() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	1	addend	$1

drivers/net/bareudp.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING

drivers/net/bareudp.c IP6_ECN_set_ect1() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING

net/sched/act_skbmod.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING

net/sched/sch_dualpi2.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING

net/ipv4/fou_core.c remcsum_adjust() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	0	csum	$1
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-4294967040[c]
USER_DATA	1	addend	0-69647[c]

net/ipv4/fou_core.c remcsum_adjust() -> csum_sub()

Type	Parameter	Key	Value
PARAM_VALUE	0	csum	0-u16max
PARAM_VALUE	1	addend	0-u16max
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-u16max[c]

net/ipv4/fou_core.c remcsum_unadjust() -> csum_sub()

Type	Parameter	Key	Value
PARAM_VALUE	0	csum	1-u32max
PARAM_VALUE	1	addend	0-u16max
DATA_SOURCE	0	csum	$1
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		rcu_read

net/ipv4/udp_offload.c __skb_udp_tunnel_segment() -> csum_sub()

Type	Parameter	Key	Value
PARAM_VALUE	0	csum	0-u16max
UNITS	1	addend	unit_byte
LOCK2		rcu_read

net/ipv4/udp_offload.c csum_replace4() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	1	addend	$1

net/ipv6/sit.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		rcu_read

net/ipv6/sit.c IP6_ECN_set_ect1() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		rcu_read

net/netfilter/nft_payload.c csum_replace4() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	1	addend	$1

net/netfilter/nft_payload.c nft_payload_l4csum_update() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	1	addend	$2

net/netfilter/nft_payload.c nft_payload_l4csum_update() -> csum_sub()

Type	Parameter	Key	Value
PARAM_VALUE	0	csum	0-u16max
DATA_SOURCE	1	addend	$2

drivers/net/wireguard/receive.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		bh
HALF_LOCKED2		rcu_read

drivers/net/wireguard/receive.c IP6_ECN_set_ect1() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		bh
HALF_LOCKED2		rcu_read

drivers/net/ethernet/mellanox/mlx4/en_rx.c get_fixed_ipv4_csum() -> csum_sub()

Type	Parameter	Key	Value
PARAM_VALUE	1	addend	0-4294967040
DATA_SOURCE	0	csum	$0
DATA_SOURCE	1	addend	r csum_tcpudp_nofold
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		bh
HALF_LOCKED2		rcu_read

net/sched/act_nat.c csum_replace4() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	1	addend	$1
RX_PATH
TASK_NOT_RUNNING
UNITS	1	addend	unit_byte

net/sched/sch_pie.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-126976[c]
HALF_LOCKED2		rcu_read

drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c bnx2x_csum_fix() -> csum_sub()

Type	Parameter	Key	Value
PARAM_VALUE	0	csum	0-u16max
DATA_SOURCE	0	csum	$1
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		&dev->tx_global_lock
HALF_LOCKED2		&txq->_xmit_lock
HALF_LOCKED2		bh
HALF_LOCKED2		flags
HALF_LOCKED2		rcu_read

net/sched/sch_fq_pie.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-126976[c]
HALF_LOCKED2		rcu_read

net/xfrm/xfrm_input.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-126976[c]

net/netfilter/nf_nat_proto.c csum_replace4() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	1	addend	$1
RX_PATH
TASK_NOT_RUNNING
USER_DATA	1	addend	0-u32max[u]
UNITS	1	addend	unit_byte

net/ipv4/ip_sockglue.c ip_cmsg_recv_checksum() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING

net/ipv6/reassembly.c ip6_frag_queue() -> csum_sub()

Type	Parameter	Key	Value
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-192512[c]
LOCK2		&fq->q.lock
LOCK2		rcu_read
TYPE_LOCK		(struct inet_frag_queue)->lock

net/sched/sch_gred.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-126976[c]
HALF_LOCKED2		rcu_read

net/ipv4/ip_tunnel.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		rcu_read

net/ipv4/ip_tunnel.c IP6_ECN_set_ect1() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		rcu_read

net/sched/sch_red.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-126976[c]
HALF_LOCKED2		rcu_read

net/dsa/tag_dsa.c dsa_rcv_ll() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	0	csum	r csum_add
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-u32max[c]
HALF_LOCKED2		rcu_read

net/sched/sch_sfb.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-126976[c]
HALF_LOCKED2		rcu_read

net/ipv6/raw.c rawv6_push_pending_frames() -> csum_sub()

Type	Parameter	Key	Value
PARAM_VALUE	1	addend	1-u16max
RX_PATH
TASK_NOT_RUNNING
LOCK2		sk
HALF_LOCKED2		&vq->mutex
HALF_LOCKED2		sk

net/ipv6/ip6_output.c __ip6_append_data() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	1	addend	r skb_copy_and_csum_bits
RX_PATH
TASK_NOT_RUNNING

net/ipv6/netfilter/nf_conntrack_reasm.c nf_ct_frag6_queue() -> csum_sub()

Type	Parameter	Key	Value
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-192512[c]
LOCK2		&fq->q.lock
LOCK2		bh
LOCK2		rcu_read
TYPE_LOCK		(struct inet_frag_queue)->lock

drivers/net/vxlan/vxlan_core.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING

drivers/net/vxlan/vxlan_core.c IP6_ECN_set_ect1() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING

drivers/net/vxlan/vxlan_core.c remcsum_adjust() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	0	csum	$1
RX_PATH
TASK_NOT_RUNNING

drivers/net/vxlan/vxlan_core.c remcsum_adjust() -> csum_sub()

Type	Parameter	Key	Value
PARAM_VALUE	0	csum	0-u16max
PARAM_VALUE	1	addend	0-u16max
RX_PATH
TASK_NOT_RUNNING

drivers/net/vxlan/vxlan_core.c remcsum_unadjust() -> csum_sub()

Type	Parameter	Key	Value
PARAM_VALUE	0	csum	1-u32max
PARAM_VALUE	1	addend	0-u16max
DATA_SOURCE	0	csum	$1
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		rcu_read

net/sched/sch_codel.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		rcu_read

net/netfilter/xt_TCPMSS.c tcpmss_tg6() -> csum_sub()

Type	Parameter	Key	Value
PARAM_VALUE	1	addend	0-u16max
RX_PATH
TASK_NOT_RUNNING
UNITS	1	addend	unit_byte
HALF_LOCKED2		&table->lock
HALF_LOCKED2		bh

net/ipv6/netfilter/ip6t_NPT.c ip6t_npt_checkentry() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	0	csum	r csum_partial
DATA_SOURCE	1	addend	r csum_partial
RX_PATH
TASK_NOT_RUNNING
USER_DATA	0	csum	0-69647[c]
USER_DATA	1	addend	0-69647[c]

net/netfilter/nf_flow_table_ip.c csum_replace4() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	1	addend	$1
RX_PATH
TASK_NOT_RUNNING
UNITS	1	addend	unit_byte
HALF_LOCKED2		rcu_read

net/openvswitch/actions.c csum_replace() -> csum_sub()

Type	Parameter	Key	Value
PARAM_VALUE	1	addend	0-16777215
DATA_SOURCE	1	addend	$1
BIT_INFO	1	addend	0x0,0xfffff
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-192512[c]

net/openvswitch/actions.c csum_replace4() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	1	addend	$1
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING

drivers/net/ethernet/myricom/myri10ge/myri10ge.c myri10ge_vlan_rx() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	1	addend	r csum_partial
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		bh
HALF_LOCKED2		rcu_read

net/sched/sch_fq_codel.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		rcu_read

net/core/utils.c csum_replace4() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	1	addend	$1
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
USER_DATA	1	addend	0-u32max
UNITS	1	addend	unit_byte
HALF_LOCKED2		&ct->lock
HALF_LOCKED2		bh

net/core/utils.c inet_proto_csum_replace4() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	1	addend	$2
RX_PATH
TASK_NOT_RUNNING
USER_DATA	1	addend	0-u32max[u]
UNITS	1	addend	unit_byte

net/core/utils.c inet_proto_csum_replace4() -> csum_sub()

Type	Parameter	Key	Value
PARAM_VALUE	0	csum	0-u16max
DATA_SOURCE	1	addend	$2
RX_PATH
TASK_NOT_RUNNING
USER_DATA	0	csum	0-u16max[u]
USER_DATA	1	addend	0-u32max[u]
UNITS	1	addend	unit_byte

net/core/utils.c inet_proto_csum_replace_by_diff() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	0	csum	$2
RX_PATH

drivers/net/ethernet/mellanox/mlx5/core/en_rx.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
USER_DATA	1	addend	0-u32max
LOCK2		rcu_read
HALF_LOCKED2		bh

net/sched/sch_cake.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		bh
HALF_LOCKED2		rcu_read

net/sched/sch_fq.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		bh
HALF_LOCKED2		rcu_read

net/ipv4/ip_output.c __ip_append_data() -> csum_sub()

Type	Parameter	Key	Value
DATA_SOURCE	1	addend	r skb_copy_and_csum_bits
RX_PATH
TASK_NOT_RUNNING

net/sched/sch_sfq.c IP6_ECN_set_ce() -> csum_sub()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HOST_DATA	0	csum	0-126976[c]
HALF_LOCKED2		rcu_read