fib_select_path 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 prototype:

include/net/ip_fib.h, line 578 (as a prototype)

Defined in 1 files as a function:

net/ipv4/fib_semantics.c, line 2223 (as a function)

Referenced in 2 files:

Smatch caller information:

net/core/filter.c bpf_ipv4_fib_lookup() -> fib_select_path()

Type	Parameter	Key	Value
PARAM_VALUE	0	net	4096-ptr_max
PARAM_VALUE	0	net->user_ns	4096-ptr_max
PARAM_VALUE	1	res	7934135933787738112
PARAM_VALUE	1	res->fi	4096-ptr_max
PARAM_VALUE	1	res->type	1
PARAM_VALUE	2	fl4	8899565637439016960
PARAM_VALUE	2	fl4->__fl_common.flowic_dscp	0,4-252
PARAM_VALUE	2	fl4->__fl_common.flowic_flags	0
PARAM_VALUE	2	fl4->__fl_common.flowic_l3mdev	0
PARAM_VALUE	2	fl4->__fl_common.flowic_multipath_hash	0
PARAM_VALUE	3	skb	0
DATA_SOURCE	0	net	$0
NOCHECK_CALL
UNITS	0	net	unit_byte

net/ipv4/route.c __ip_do_redirect() -> fib_select_path()

Type	Parameter	Key	Value
PARAM_VALUE	0	net	4096-ptr_max
PARAM_VALUE	1	res	4240960965415747584
PARAM_VALUE	2	fl4	13317736350126080,296812173255839744,4338008797665587200
PARAM_VALUE	2	fl4->__fl_common.flowic_dscp	0,4-252
PARAM_VALUE	2	fl4->__fl_common.flowic_flags	0
PARAM_VALUE	2	fl4->__fl_common.flowic_iif	1
PARAM_VALUE	2	fl4->__fl_common.flowic_l3mdev	0
PARAM_VALUE	2	fl4->__fl_common.flowic_multipath_hash	0
PARAM_VALUE	2	fl4->__fl_common.flowic_scope	0,253
PARAM_VALUE	2	fl4->uli.ports.dport	0
PARAM_VALUE	2	fl4->uli.ports.sport	0
PARAM_VALUE	3	skb	4096-ptr_max
PARAM_VALUE	3	skb->data	4096-ptr_max
PARAM_VALUE	3	skb->dev	4096-ptr_max
PARAM_VALUE	3	skb->dev->ethtool_ops->rxfh_max_num_contexts	0-4294967295
PARAM_VALUE	3	skb->dev->ethtool_ops->supported_coalesce_params	0-s64max
PARAM_VALUE	3	skb->dev->nd_net.net->ipv4.fqdir->f->frag_expire	0,663510801442193408,1753052602134376448,4007388366431105024,8876081723503042560
PARAM_VALUE	3	skb->dev->nd_net.net->ipv4.fqdir->f->qsize	0,304,320
PARAM_VALUE	3	skb->dev->ndisc_ops->fill_addr_option	4096-ptr_max
PARAM_VALUE	3	skb->dev->ndisc_ops->parse_options	4096-ptr_max
PARAM_VALUE	3	skb->dev->ndisc_ops->update	4096-ptr_max
PARAM_VALUE	3	skb->dev->rtnl_link_ops->maxtype	0-6,8-10,15,18,20,22,24,34,50
PARAM_VALUE	3	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
BUF_SIZE	3	skb	(-1)-s32max
BUF_SIZE	3	skb	(-1)-s32max
CAPPED_DATA	2	fl4->__fl_common.flowic_scope	1
CAPPED_DATA	3	skb->dev	1
CAPPED_DATA	3	skb->dev->nd_net.net	1
DATA_SOURCE	2	fl4	$2
DATA_SOURCE	3	skb	$1
NOSPEC	2	fl4->saddr
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA	3	skb->csum	0-4294967040[c]
HOST_DATA	3	skb->csum_offset	0-u16max
HOST_DATA	3	skb->prev->csum_offset	0-u16max
HOST_DATA	3	skb->prev->data_len	0-u32max[c]
HOST_DATA	3	skb->prev->len	1-u32max[c]
HOST_DATA	3	skb->prev->tstamp	500000002-4294967299794967295[c]
HOST_DATA	3	skb->tstamp	500000002-4294967299794967295[c]
HOST_DATA	3	skb->users.refs.counter	s32min-0,2-s32max
HOST_DATA	3	*skb->data	0-255
USER_DATA	2	fl4->__fl_common.flowic_dscp	0,4-252[c]
USER_DATA	2	fl4->daddr	0-u32max[u]
USER_DATA	2	fl4->saddr	0-u32max
NO_OVERFLOW_SIMPLE	3	skb->data_len
NO_OVERFLOW_SIMPLE	3	skb->dev->group
NO_OVERFLOW_SIMPLE	3	skb->dev->num_tc
NO_OVERFLOW_SIMPLE	3	skb->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE	3	skb->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE	3	skb->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE	3	skb->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE	3	skb->dev->tx_queue_len
NO_OVERFLOW_SIMPLE	3	skb->end
NO_OVERFLOW_SIMPLE	3	skb->len
NO_OVERFLOW_SIMPLE	3	skb->next->end
NO_OVERFLOW_SIMPLE	3	skb->next->len
NO_OVERFLOW_SIMPLE	3	skb->next->tail
NO_OVERFLOW_SIMPLE	3	skb->next->truesize
NO_OVERFLOW_SIMPLE	3	skb->prev->end
NO_OVERFLOW_SIMPLE	3	skb->prev->len
NO_OVERFLOW_SIMPLE	3	skb->prev->tail
NO_OVERFLOW_SIMPLE	3	skb->prev->truesize
NO_OVERFLOW_SIMPLE	3	skb->sk->sk_backlog.len
NO_OVERFLOW_SIMPLE	3	skb->tail
NO_OVERFLOW_SIMPLE	3	skb->truesize
UNITS	0	net	unit_byte

net/ipv4/route.c __ip_rt_update_pmtu() -> fib_select_path()

Type	Parameter	Key	Value
PARAM_VALUE	0	net	4096-ptr_max
PARAM_VALUE	1	res	7684502420953772032
PARAM_VALUE	2	fl4	2162147593913135104,2492317193869529088,2953694614799618048,4751902985513521152
PARAM_VALUE	2	fl4->__fl_common.flowic_dscp	0,4-252
PARAM_VALUE	2	fl4->__fl_common.flowic_flags	0-1
PARAM_VALUE	2	fl4->__fl_common.flowic_iif	1
PARAM_VALUE	2	fl4->__fl_common.flowic_l3mdev	0
PARAM_VALUE	2	fl4->__fl_common.flowic_multipath_hash	0
PARAM_VALUE	2	fl4->__fl_common.flowic_scope	0,253
PARAM_VALUE	2	fl4->uli.ports.dport	0
PARAM_VALUE	2	fl4->uli.ports.sport	0
PARAM_VALUE	3	skb	0
CAPPED_DATA	0	net->ipv4.ip_rt_min_pmtu	1
CAPPED_DATA	2	fl4->__fl_common.flowic_scope	1
DATA_SOURCE	0	net	r dst_dev_net_rcu
DATA_SOURCE	2	fl4	$1
NOSPEC	2	fl4->saddr
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
USER_DATA	2	fl4->__fl_common.flowic_dscp	0,4-252[c]
USER_DATA	2	fl4->daddr	0-u32max[u]
USER_DATA	2	fl4->saddr	0-u32max
LOCK2		rcu_read
HALF_LOCKED2		&sk->sk_lock.slock

net/ipv4/route.c ip_route_output_key_hash_rcu() -> fib_select_path()

Type	Parameter	Key	Value
PARAM_VALUE	0	net	4096-ptr_max
PARAM_VALUE	0	net->ipv4.fqdir->f->frag_expire	0,663510801442193408,1753052602134376448,4007388366431105024,8876081723503042560
PARAM_VALUE	0	net->ipv4.fqdir->f->qsize	0,304,320
PARAM_VALUE	0	net->loopback_dev->rtnl_link_ops->maxtype	0-6,8-10,15,18,20,22,24,34,50
PARAM_VALUE	1	res	429988801965383680,8909405672440926208
PARAM_VALUE	1	res->fi->fib_dead	0
PARAM_VALUE	1	res->fi->nh	0,4096-ptr_max
PARAM_VALUE	1	res->nhc->nhc_family	0,2,10
PARAM_VALUE	1	res->nhc->nhc_flags	16-255
PARAM_VALUE	1	res->nhc->nhc_gw_family	0,2,10
PARAM_VALUE	1	res->table->tb_data	4096-ptr_max
PARAM_VALUE	1	res->type	0-1,3-255
PARAM_VALUE	2	fl4	4096-ptr_max
PARAM_VALUE	2	fl4->__fl_common.flowic_iif	1
PARAM_VALUE	2	fl4->daddr	1-u32max
PARAM_VALUE	3	skb	0,4096-ptr_max
PARAM_VALUE	3	skb->dev->nd_net.net->ipv4.fqdir->f->frag_expire	0,663510801442193408,1753052602134376448,4007388366431105024,8876081723503042560
PARAM_VALUE	3	skb->dev->nd_net.net->ipv4.fqdir->f->qsize	0,304,320
PARAM_VALUE	3	skb->dev->ndisc_ops->fill_addr_option	4096-ptr_max
PARAM_VALUE	3	skb->dev->ndisc_ops->parse_options	4096-ptr_max
PARAM_VALUE	3	skb->dev->ndisc_ops->update	4096-ptr_max
PARAM_VALUE	3	skb->dev->rtnl_link_ops->maxtype	0-6,8-10,15,18,20,22,24,34,50
PARAM_VALUE	3	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
BUF_SIZE	0	net	(-1),1-s32max
BUF_SIZE	0	net	(-1),1-s32max
BUF_SIZE	3	skb	(-1)-s32max
BUF_SIZE	3	skb	(-1)-s32max
CAPPED_DATA	2	fl4->__fl_common.flowic_oif	1
DATA_SOURCE	0	net	$0
DATA_SOURCE	1	res	$2
DATA_SOURCE	2	fl4	$1
DATA_SOURCE	3	skb	$3
NOSPEC	2	fl4->__fl_common.flowic_oif
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA	2	fl4->uli.ports.sport	0-u16max[c]
HOST_DATA	3	skb->csum	0-4294967040[c]
HOST_DATA	3	skb->csum_offset	0-u16max
HOST_DATA	3	skb->data_len	0-u32max[c]
HOST_DATA	3	skb->len	0-u32max[c]
HOST_DATA	3	skb->prev->csum_offset	0-u16max
HOST_DATA	3	skb->prev->data_len	0-u32max[c]
HOST_DATA	3	skb->prev->len	0-u32max[c]
HOST_DATA	3	skb->prev->tstamp	500000002-4294967299794967295[c]
HOST_DATA	3	skb->truesize	0-u32max
HOST_DATA	3	skb->tstamp	500000002-4294967299794967295[c]
HOST_DATA	3	skb->users.refs.counter	s32min-0,2-s32max
HOST_DATA	3	*skb->data	0-255
USER_DATA	2	fl4->__fl_common.flowic_dscp	0,4-252[c]
USER_DATA	2	fl4->__fl_common.flowic_oif	s32min-(-1),1-s32max[c]
USER_DATA	2	fl4->__fl_common.flowic_proto	0-255
USER_DATA	2	fl4->daddr	1-u32max
USER_DATA	2	fl4->saddr	0-4294967294
USER_DATA	2	fl4->uli.ports.dport	0-u16max
USER_DATA	2	fl4->uli.ports.sport	0-u16max[u]
NO_OVERFLOW_SIMPLE	3	skb->data_len
NO_OVERFLOW_SIMPLE	3	skb->dev->group
NO_OVERFLOW_SIMPLE	3	skb->dev->num_tc
NO_OVERFLOW_SIMPLE	3	skb->dev->real_num_rx_queues
NO_OVERFLOW_SIMPLE	3	skb->dev->real_num_tx_queues
NO_OVERFLOW_SIMPLE	3	skb->dev->stats.rx_bytes
NO_OVERFLOW_SIMPLE	3	skb->dev->stats.tx_bytes
NO_OVERFLOW_SIMPLE	3	skb->dev->tx_queue_len
NO_OVERFLOW_SIMPLE	3	skb->end
NO_OVERFLOW_SIMPLE	3	skb->len
NO_OVERFLOW_SIMPLE	3	skb->next->data_len
NO_OVERFLOW_SIMPLE	3	skb->next->end
NO_OVERFLOW_SIMPLE	3	skb->next->len
NO_OVERFLOW_SIMPLE	3	skb->next->tail
NO_OVERFLOW_SIMPLE	3	skb->next->truesize
NO_OVERFLOW_SIMPLE	3	skb->prev->end
NO_OVERFLOW_SIMPLE	3	skb->prev->len
NO_OVERFLOW_SIMPLE	3	skb->prev->tail
NO_OVERFLOW_SIMPLE	3	skb->prev->truesize
NO_OVERFLOW_SIMPLE	3	skb->sk->sk_backlog.len
NO_OVERFLOW_SIMPLE	3	skb->tail
NO_OVERFLOW_SIMPLE	3	skb->truesize
UNITS	0	net	unit_byte
UNITS	3	skb	unit_byte
LOCK2		rcu_read
HALF_LOCKED2	0	&net->ipv4.mfc_mutex
HALF_LOCKED2	0	&net->ipv6.mfc_mutex
HALF_LOCKED2	0	&net->rtnl_mutex