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2b44368307
Rules which match against device names in their selector can remain while the device itself disappears, in fact the device doesn't have to present when the rule is added in the first place. The device name is resolved by trying when the rule is added and later by listening to NETDEV_REGISTER/UNREGISTER notifications. This patch adds the flag FIB_RULE_DEV_DETACHED which is set towards userspace when a rule contains a device match which is unresolved at the moment. This eases spotting the reason why certain rules seem not to function properly. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
68 lines
1.3 KiB
C
68 lines
1.3 KiB
C
#ifndef __LINUX_FIB_RULES_H
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#define __LINUX_FIB_RULES_H
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#include <linux/types.h>
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#include <linux/rtnetlink.h>
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/* rule is permanent, and cannot be deleted */
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#define FIB_RULE_PERMANENT 1
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#define FIB_RULE_INVERT 2
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#define FIB_RULE_UNRESOLVED 4
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#define FIB_RULE_DEV_DETACHED 8
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struct fib_rule_hdr
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{
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__u8 family;
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__u8 dst_len;
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__u8 src_len;
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__u8 tos;
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__u8 table;
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__u8 res1; /* reserved */
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__u8 res2; /* reserved */
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__u8 action;
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__u32 flags;
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};
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enum
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{
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FRA_UNSPEC,
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FRA_DST, /* destination address */
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FRA_SRC, /* source address */
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FRA_IFNAME, /* interface name */
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FRA_GOTO, /* target to jump to (FR_ACT_GOTO) */
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FRA_UNUSED2,
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FRA_PRIORITY, /* priority/preference */
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FRA_UNUSED3,
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FRA_UNUSED4,
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FRA_UNUSED5,
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FRA_FWMARK, /* mark */
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FRA_FLOW, /* flow/class id */
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FRA_UNUSED6,
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FRA_UNUSED7,
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FRA_UNUSED8,
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FRA_TABLE, /* Extended table id */
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FRA_FWMASK, /* mask for netfilter mark */
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__FRA_MAX
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};
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#define FRA_MAX (__FRA_MAX - 1)
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enum
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{
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FR_ACT_UNSPEC,
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FR_ACT_TO_TBL, /* Pass to fixed table */
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FR_ACT_GOTO, /* Jump to another rule */
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FR_ACT_RES2,
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FR_ACT_RES3,
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FR_ACT_RES4,
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FR_ACT_BLACKHOLE, /* Drop without notification */
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FR_ACT_UNREACHABLE, /* Drop with ENETUNREACH */
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FR_ACT_PROHIBIT, /* Drop with EACCES */
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__FR_ACT_MAX,
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};
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#define FR_ACT_MAX (__FR_ACT_MAX - 1)
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#endif
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