ip6_dst_hoplimit identifier - Linux source code next-20260811

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FIXME
- FIXME
  - next-20260811

Defined in 1 files as a prototype:

include/net/ipv6.h, line 826 (as a prototype)

Defined in 1 files as a function:

net/ipv6/ip6_output.c, line 262 (as a function)

Referenced in 19 files:

Smatch caller information:

net/xfrm/xfrm_iptfs.c iptfs_encap_add_ipv6() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		rcu_read

drivers/infiniband/core/addr.c addr6_resolve() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
DATA_SOURCE	0	dst	r ip6_dst_lookup_flow
RX_PATH
TASK_NOT_RUNNING
LOCK2		rcu_read

drivers/net/geneve.c geneve6_xmit_skb() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
PARAM_VALUE	0	dst->ops	4096-ptr_max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
DATA_SOURCE	0	dst	r udp_tunnel6_dst_lookup
RX_PATH
TASK_NOT_RUNNING
LOCK2		rcu_read
HALF_LOCKED2		&dev->tx_global_lock
HALF_LOCKED2		&txq->_xmit_lock
HALF_LOCKED2		bh
HALF_LOCKED2		flags

net/ipv6/ip6_tunnel.c ip6_tnl_xmit() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
PARAM_VALUE	0	dst->ops	4096-ptr_max
BUF_SIZE	0	dst	(-1)-0,144,152
BUF_SIZE	0	dst	(-1)-0,144,152
CAPPED_DATA	0	dst	1
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		bh
HALF_LOCKED2		flags
HALF_LOCKED2		rcu_read

drivers/net/gtp.c gtp_dev_xmit() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		&txq->_xmit_lock
HALF_LOCKED2		bh
HALF_LOCKED2		flags

net/ipv6/udp.c ip6_sk_dst_hoplimit() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
DATA_SOURCE	0	dst	$2

drivers/net/wireguard/socket.c send6() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
PARAM_VALUE	0	dst->u.dst.__pad	s16min-s16max
PARAM_VALUE	0	dst->u.dst.__rcuref.refcnt.counter	s32min-s32max
PARAM_VALUE	0	dst->u.dst.__use	s32min-s32max
PARAM_VALUE	0	dst->u.dst.dst_trace_seq.counter	s32min-s32max
PARAM_VALUE	0	dst->u.dst.error	s16min-s16max
PARAM_VALUE	0	dst->u.dst.header_len	0-u16max
PARAM_VALUE	0	dst->u.dst.obsolete	s16min-s16max
PARAM_VALUE	0	dst->u.dst.tclassid	0-4294967295
PARAM_VALUE	0	dst->u.dst.trailer_len	0-u16max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
PREEMPT_ADD			<- disables preempt
LOCK2		rcu_read
HALF_LOCKED2		&peer->endpoint_lock
HALF_LOCKED2		bh

net/ipv6/ping.c ip6_sk_dst_hoplimit() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
BUF_SIZE	0	dst	(-1)-0,144,152
BUF_SIZE	0	dst	(-1)-0,144,152
DATA_SOURCE	0	dst	$2
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		&vq->mutex
HALF_LOCKED2		sk

net/tipc/udp_media.c tipc_udp_xmit() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
PREEMPT_ADD			<- disables preempt
TASK_NOT_RUNNING
LOCK2		bh
HALF_LOCKED2		rcu_read

net/l2tp/l2tp_ip6.c ip6_sk_dst_hoplimit() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
DATA_SOURCE	0	dst	$2
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		&vq->mutex
HALF_LOCKED2		sk

net/xfrm/xfrm_output.c xfrm6_tunnel_encap_add() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		rcu_read

net/ipv6/ipv6_sockglue.c do_ipv6_getsockopt() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	1-u64max
RX_PATH
LOCK2		rcu_read

drivers/net/ethernet/sfc/tc_encap_actions.c efx_bind_neigh() -> ip6_dst_hoplimit()

Type	Key	Value
PARAM_VALUE	dst	4096-ptr_max
PARAM_VALUE	dst->dev	0,4096-ptr_max
BUF_SIZE	dst	(-1)-0,4,24,64,144,152,168-s32max
BUF_SIZE	dst	(-1)-0,4,24,64,144,152,168-s32max
DATA_SOURCE	dst	r ip6_dst_lookup_flow

drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c mlx5e_route_lookup_ipv6_get() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
DATA_SOURCE	0	dst	r ip6_dst_lookup_flow
RX_PATH
TASK_NOT_RUNNING
LOCK2		&esw->offloads.encap_tbl_lock
HALF_LOCKED2		&pool->lock
HALF_LOCKED2		global &rtnl_mutex
TYPE_LOCK		(struct mlx5_esw_offload)->encap_tbl_lock

drivers/net/ovpn/udp.c ovpn_udp6_output() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
PARAM_VALUE	0	dst->u.dst.__pad	s16min-s16max
PARAM_VALUE	0	dst->u.dst.__rcuref.refcnt.counter	s32min-s32max
PARAM_VALUE	0	dst->u.dst.__use	s32min-s32max
PARAM_VALUE	0	dst->u.dst.dst_trace_seq.counter	s32min-s32max
PARAM_VALUE	0	dst->u.dst.error	s16min-s16max
PARAM_VALUE	0	dst->u.dst.header_len	0-u16max
PARAM_VALUE	0	dst->u.dst.obsolete	s16min-s16max
PARAM_VALUE	0	dst->u.dst.tclassid	0-4294967295
PARAM_VALUE	0	dst->u.dst.trailer_len	0-u16max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
PREEMPT_ADD			<- disables preempt
RX_PATH
TASK_NOT_RUNNING
LOCK2		rcu_read
HALF_LOCKED2		&pool->lock
HALF_LOCKED2		_T->lock
HALF_LOCKED2		bh

net/ipv6/raw.c ip6_sk_dst_hoplimit() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
DATA_SOURCE	0	dst	$2
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		&vq->mutex
HALF_LOCKED2		sk

net/ipv6/ip6_output.c ip6_xmit() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
CAPPED_DATA	0	dst->dev_rcu	1
DATA_SOURCE	0	dst	r skb_dst
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
LOCK2		rcu_read
HALF_LOCKED2		&net->xfrm.xfrm_state_lock
HALF_LOCKED2		bh

net/ipv6/netfilter/nf_reject_ipv6.c nf_send_reset6() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
PARAM_VALUE	0	dst->dev->refcnt_tracker.list.next->prev	4096-ptr_max
PARAM_VALUE	0	dst->dev->refcnt_tracker.quarantine.prev	4096-ptr_max
PARAM_VALUE	0	dst->dev->refcnt_tracker.quarantine.prev->next	4096-ptr_max
PARAM_VALUE	0	dst->dev->refcnt_tracker.quarantine.prev->next->next	4096-ptr_max
PARAM_VALUE	0	dst->ops->pcpuc_entries.lock.dep_map->name	0-255
PARAM_VALUE	0	dst->ops->pcpuc_entries.lock.owner	(-1)
PARAM_VALUE	0	dst->ops->pcpuc_entries.lock.owner_cpu	u32max
BUF_SIZE	0	dst	(-1)-0,144,152
BUF_SIZE	0	dst	(-1)-0,144,152
CAPPED_DATA	0	dst	1
DATA_SOURCE	0	dst	r xfrm_lookup
RX_PATH
TASK_NOT_RUNNING

net/sctp/ipv6.c sctp_v6_xmit() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
DATA_SOURCE	0	dst	r dst_clone
PREEMPT_ADD			<- disables preempt
RX_PATH
TASK_NOT_RUNNING
LOCK2		bh

net/ipv6/seg6_iptunnel.c __seg6_do_srh_encap() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	0,2-u64max
RX_PATH
TASK_NOT_RUNNING

net/ipv6/seg6_iptunnel.c seg6_do_srh_encap_red() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	0,2-u64max
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		rcu_read

drivers/net/ethernet/netronome/nfp/flower/action.c nfp_fl_set_tun() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
BUF_SIZE	0	dst	(-1)-0,4,24,64,144,152,168-s32max
DATA_SOURCE	0	dst	r ip6_dst_lookup_flow
RX_PATH
TASK_NOT_RUNNING
HALF_LOCKED2		&priv->nfp_fl_lock

net/ipv6/icmp.c ip6_sk_dst_hoplimit() -> ip6_dst_hoplimit()

Type	Parameter	Key	Value
PARAM_VALUE	0	dst	4096-ptr_max
PARAM_VALUE	0	dst->dev->refcnt_tracker.list.next->next	4096-ptr_max
BUF_SIZE	0	dst	(-1)-0,144,152
BUF_SIZE	0	dst	(-1)-0,144,152
CAPPED_DATA	0	dst	1
DATA_SOURCE	0	dst	$2
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
LOCK2		bh
HALF_LOCKED2		rcu_read