diff options
author | Jared Yanovich <jaredy@cvs.openbsd.org> | 2004-08-11 16:55:44 +0000 |
---|---|---|
committer | Jared Yanovich <jaredy@cvs.openbsd.org> | 2004-08-11 16:55:44 +0000 |
commit | f82fbf5cf342b35a2482568598db0a2730aca91d (patch) | |
tree | 54076c2e1657ae743f7e0d754e59fbfcd4bc9ccd /share/man | |
parent | e21a047538205792863d5833675076439b6bf175 (diff) |
sync to reality, document missing ioctls
mdoc fixes
normalize ioctl listing
slightly reorganize some parts
grammar, punctuation, and rewording fixes
remove crud introduced in rev 1.17 and never removed
Note: this update does *not* include the controversial stuff discussed
on h@; it contains what is in the header file.
help and ok (previously) jmc
Diffstat (limited to 'share/man')
-rw-r--r-- | share/man/man4/bridge.4 | 587 |
1 files changed, 280 insertions, 307 deletions
diff --git a/share/man/man4/bridge.4 b/share/man/man4/bridge.4 index 47aabf0afe6..6c646a4d30c 100644 --- a/share/man/man4/bridge.4 +++ b/share/man/man4/bridge.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: bridge.4,v 1.57 2004/05/04 16:29:30 cedric Exp $ +.\" $OpenBSD: bridge.4,v 1.58 2004/08/11 16:55:43 jaredy Exp $ .\" .\" Copyright (c) 1999-2001 Jason L. Wright (jason@thought.net) .\" All rights reserved. @@ -50,7 +50,7 @@ datagrams. A .Nm interface can be created at runtime using the -.Ic ifconfig bridgeN create +.Ic ifconfig bridge Ns Ar N Ic create command or by setting up a .Xr bridgename.if 5 configuration file for @@ -105,86 +105,90 @@ calls are specific to devices. They are defined in .Aq Pa sys/sockio.h . -.Bl -tag -width SIOCBRDGGIFFLGS -.It Dv SIOCBRDGIFS -.Pq Li "struct ifbifconf" +.Bl -tag -width Ds +.It Dv SIOCBRDGIFS Fa "struct ifbifconf *" Retrieve member interface list from a bridge. This request takes an -.Li ifbifconf +.Vt ifbifconf structure (see below) as a value-result parameter. The -.Fa ifbic_len +.Va ifbic_len field should be initially set to the size of the buffer pointed to by -.Fa ifbic_buf . +.Va ifbic_buf . On return it will contain the length, in bytes, of the configuration list. +.Pp Alternatively, if the -.Fa ifbic_len +.Va ifbic_len passed in is set to 0, .Dv SIOCBRDGIFS will set -.Fa ifbic_len +.Va ifbic_len to the size that -.Fa ifbic_buf +.Va ifbic_buf needs to be to fit the entire configuration list, and will not fill in the other parameters. This is useful for determining the exact size that -.Fa ifbic_buf +.Va ifbic_buf needs to be in advance. .Pp The argument structure is defined as follows: -.Bd -literal -offset indent +.Bd -literal struct ifbreq { - char ifbr_name[IFNAMSIZ]; /* brdg nam */ - char ifbr_ifsname[IFNAMSIZ]; /* if name */ - u_int32_t ifbr_ifsflags; /* if flags */ + char ifbr_name[IFNAMSIZ]; /* bridge ifs name */ + char ifbr_ifsname[IFNAMSIZ];/* member ifs name */ + u_int32_t ifbr_ifsflags; /* member ifs flags */ + u_int8_t ifbr_state; /* member stp state */ + u_int8_t ifbr_priority; /* member stp priority */ + u_int8_t ifbr_portno; /* member port number */ + u_int32_t ifbr_path_cost; /* member stp path cost */ }; -#define IFBIF_LEARNING 0x1 /* learns addrs */ -#define IFBIF_DISCOVER 0x2 /* gets fwd'd pkts */ +/* ifbr_ifsflags flags about interfaces */ +#define IFBIF_LEARNING 0x0001 /* ifs can learn */ +#define IFBIF_DISCOVER 0x0002 /* sends packets w/unknown dst */ +#define IFBIF_BLOCKNONIP 0x0004 /* ifs blocks non-IP/ARP in/out */ +#define IFBIF_STP 0x0008 /* participate in spanning tree*/ +#define IFBIF_SPAN 0x0100 /* ifs is a span port (ro) */ +#define IFBIF_RO_MASK 0xff00 /* read only bits */ struct ifbifconf { - char ifbic_name[IFNAMSIZ]; /* brdg name */ - u_int32_t ifbic_len; /* buf size */ + char ifbic_name[IFNAMSIZ]; /* bridge ifs name */ + u_int32_t ifbic_len; /* buffer size */ union { - caddr_t ifbicu_buf; /* buffer */ - struct ifbreq *ifbicu_req; + caddr_t ifbicu_buf; + struct ifbreq *ifbicu_req; } ifbic_ifbicu; -#define ifbic_buf ifbic_ifbicu.ifbicu_buf -#define ifbic_req ifbic_ifbicu.ifbicu_req +#define ifbic_buf ifbic_ifbicu.ifbicu_buf +#define ifbic_req ifbic_ifbicu.ifbicu_req }; .Ed -.It Dv SIOCBRDGADD -.Pq Li "struct ifbreq" +.It Dv SIOCBRDGADD Fa "struct ifbreq *" Add the interface named in -.Fa ifbr_ifsname +.Va ifbr_ifsname to the bridge named in -.Fa ifbr_name . -.It Dv SIOCBRDGDEL -.Pq Li "struct ifbreq" +.Va ifbr_name . +.It Dv SIOCBRDGDEL Fa "struct ifbreq *" Delete the interface named in -.Fa ifbr_ifsname +.Va ifbr_ifsname from the bridge named in -.Fa ifbr_name . -.It Dv SIOCBRDGADDS -.Pq Li "struct ifbreq" +.Va ifbr_name . +.It Dv SIOCBRDGADDS Fa "struct ifbreq *" Add the interface named in -.Fa ifbr_ifsname +.Va ifbr_ifsname as a span port to the bridge named in -.Fa ifbr_name . -.It Dv SIOCBRDGDELS -.Pq Li "struct ifbreq" +.Va ifbr_name . +.It Dv SIOCBRDGDELS Fa "struct ifbreq *" Delete the interface named in -.Fa ifbr_ifsname +.Va ifbr_ifsname from the list of span ports of the bridge named in -.Fa ifbr_name . -.It Dv SIOCBRDGSIFFLGS -.Pq Li "struct ifbreq" +.Va ifbr_name . +.It Dv SIOCBRDGSIFFLGS Fa "struct ifbreq *" Set the bridge member interface flags for the interface named in -.Fa ifbr_ifsname +.Va ifbr_ifsname attached to the bridge -.Fa ifbr_name . +.Va ifbr_name . If the flag .Dv IFBIF_LEARNING is set on an interface, source addresses from frames received on the @@ -202,343 +206,309 @@ is set, packets that are one of .Xr ip6 4 , .Xr arp 4 , or -Reverse ARP, will not be bridged from and to the interface. -.It Dv SIOCBRDGGIFFLGS +Reverse ARP will not be bridged from and to the interface. +.It Dv SIOCBRDGGIFFLGS Fa "struct ifbreq *" Retrieve the bridge member interface flags for the interface named in -.Fa ifbr_ifsname +.Va ifbr_ifsname attached to the bridge -.Fa ifbr_name . -.It Dv SIOCBRDGRTS -.Pq Li "struct ifbaconf" +.Va ifbr_name . +.It Dv SIOCBRDGRTS Fa "struct ifbaconf *" Retrieve the address cache of the bridge named in -.Fa ifbac_name . +.Va ifbac_name . This request takes an -.Li ifbaconf -structure (see below) as a value result parameter. +.Vt ifbaconf +structure (see below) as a value-result parameter. The -.Fa ifbac_len +.Va ifbac_len field should be initially set to the size of the buffer pointed to by -.Fa ifbac_buf . +.Va ifbac_buf . On return, it will contain the length, in bytes, of the configuration list. +.Pp Alternatively, if the -.Fa ifbac_len +.Va ifbac_len passed in is set to 0, .Dv SIOCBRDGRTS will set it to the size that -.Fa ifbac_buf -needs to be to fit the entire configuration list and not fill in the other +.Va ifbac_buf +needs to be to fit the entire configuration list, and will not fill in the other parameters. As with .Dv SIOCBRDGIFS , this is useful for determining the exact size that -.Fa ifbac_buf +.Va ifbac_buf needs to be in advance. .Pp The argument structure is defined as follows: -.Bd -literal -offset indent +.Bd -literal struct ifbareq { - char ifba_name[IFNAMSIZ]; /* brdg nam */ - char ifba_ifsname[IFNAMSIZ];/* dest ifs */ - u_int8_t ifba_age; /* addr age */ - u_int8_t ifba_flags; /* addr flag */ - struct ether_addr ifba_dst; /* dst addr */ + char ifba_name[IFNAMSIZ]; /* bridge name */ + char ifba_ifsname[IFNAMSIZ];/* destination ifs */ + u_int8_t ifba_age; /* address age */ + u_int8_t ifba_flags; /* address flags */ + struct ether_addr ifba_dst; /* destination addr */ }; -#define IFBAF_TYPEMASK 0x03 /* addr type mask */ -#define IFBAF_DYNAMIC 0x00 /* dynamic addr */ -#define IFBAF_STATIC 0x01 /* static address */ +#define IFBAF_TYPEMASK 0x03 /* address type mask */ +#define IFBAF_DYNAMIC 0x00 /* dynamically learned */ +#define IFBAF_STATIC 0x01 /* static address */ struct ifbaconf { - char ifbac_name[IFNAMSIZ]; /* brdg name */ - u_int32_t ifbac_len; /* buf size */ + char ifbac_name[IFNAMSIZ]; /* bridge ifs name */ + u_int32_t ifbac_len; /* buffer size */ union { - caddr_t ifbacu_buf; /* buf */ - struct ifbareq *ifbacu_req; + caddr_t ifbacu_buf; /* buffer */ + struct ifbareq *ifbacu_req; /* request pointer */ } ifbac_ifbacu; -#define ifbac_buf ifbac_ifbacu.ifbacu_buf -#define ifbac_req ifbac_ifbacu.ifbacu_req +#define ifbac_buf ifbac_ifbacu.ifbacu_buf +#define ifbac_req ifbac_ifbacu.ifbacu_req }; .Ed +.Pp Address cache entries with the type set to .Dv IFBAF_DYNAMIC in -.Fa ifba_flags +.Va ifba_flags are entries learned by the bridge. Entries with the type set to .Dv IFBAF_STATIC are manually added entries. -.It Dv SIOCBRDGSADDR -.Pq Li "struct ifbareq" +.It Dv SIOCBRDGSADDR Fa "struct ifbareq *" Add an entry, manually, to the address cache for the bridge named in -.Fa ifba_name . +.Va ifba_name . The address and its associated interface and flags are set in the -.Fa ifba_dst , -.Fa ifba_ifsname , +.Va ifba_dst , +.Va ifba_ifsname , and -.Fa ifba_flags +.Va ifba_flags fields, respectively. -.It Dv SIOCBRDGDADDR -.Pq Li "struct ifbareq" +.It Dv SIOCBRDGDADDR Fa "struct ifbareq *" Delete an entry from the address cache of the bridge named in -.Fa ifba_name . +.Va ifba_name . Entries are deleted strictly based on the address field -.Fa ifba_dst . -.It Dv SIOCBRDGSCACHE -.Pq Li "struct ifbcachereq" +.Va ifba_dst . +.It Dv SIOCBRDGFLUSH Fa "struct ifbreq *" +Flush addresses from the cache. +.Va ifbr_name +contains the name of the bridge device, and +.Va ifbr_ifsflags +should be set to +.Dv IFBF_FLUSHALL +to flush all addresses from the cache or +.Dv IFBF_FLUSHDYN +to flush only the dynamically learned addresses from the cache. +.It Dv SIOCBRDGSCACHE Fa "struct ifbrparam *" Set the maximum address cache size for the bridge named in -.Fa ifbc_name +.Va ifbrp_name to -.Fa ifbc_size +.Va ifbrp_csize entries. .Pp The argument structure is as follows: -.Bd -literal -offset indent -struct ifbcachereq { - char ifbc_name[IFNAMSIZ]; /* bridge */ - u_int32_t ifbc_size; /* size */ +.Bd -literal +struct ifbrparam { + char ifbrp_name[IFNAMSIZ]; + union { + u_int32_t ifbrpu_csize; /* cache size */ + int ifbrpu_ctime; /* cache time */ + u_int16_t ifbrpu_prio; /* bridge priority */ + u_int8_t ifbrpu_hellotime; /* hello time */ + u_int8_t ifbrpu_fwddelay; /* fwd delay */ + u_int8_t ifbrpu_maxage; /* max age */ + } ifbrp_ifbrpu; }; +#define ifbrp_csize ifbrp_ifbrpu.ifbrpu_csize +#define ifbrp_ctime ifbrp_ifbrpu.ifbrpu_ctime +#define ifbrp_prio ifbrp_ifbrpu.ifbrpu_prio +#define ifbrp_hellotime ifbrp_ifbrpu.ifbrpu_hellotime +#define ifbrp_fwddelay ifbrp_ifbrpu.ifbrpu_fwddelay +#define ifbrp_maxage ifbrp_ifbrpu.ifbrpu_maxage .Ed -.It Dv SIOCBRDGGCACHE -.Pq Li "struct ifbcachereq" +.Pp +Note that the +.Va ifbrp_ctime , ifbrp_hellotime , ifbrp_fwddelay +and +.Va ifbrp_maxage +fields are in seconds. +.It Dv SIOCBRDGGCACHE Fa "struct ifbrparam *" Retrieve the maximum size of the address cache for the bridge -.Fa ifbc_name . -.It Dv SIOCBRDGSTO -.Pq Li "struct ifbcachetoreq" -Set the time, in seconds, that addresses which have not been -seen on the network (transmitted a packet) remain in the cache. +.Va ifbrp_name . +.It Dv SIOCBRDGSTO Fa "struct ifbrparam *" +Set the time, in seconds, for how long addresses which have not been +seen on the network (i.e., have not transmitted a packet) will remain in +the cache to the value +.Va ifbrp_ctime . If the time is set to zero, no aging is performed on the address cache. -The argument structure is as follows: -.Bd -literal -offset indent -struct ifbcachetoreq { - char ifbct_name[IFNAMSIZ]; /* bridge */ - u_int32_t ifbct_time; /* time */ -}; -.Ed -.It Dv SIOCBRDGGTO -.Pq Li "struct ifbcachetoreq" +.It Dv SIOCBRDGGTO Fa "struct ifbrparam *" Retrieve the address cache expiration time (see above). -.It Dv SIOCBRDGFLUSH -.Pq Li "struct ifbreq" -Flush addresses from the cache. -.Fa ifbr_name -contains the name of the bridge device, and -.Fa ifbr_ifsflags -should be set to -.Dv IFBF_FLUSHALL -to flush all addresses from the cache or -.Dv IFBF_FLUSHDYN -to flush only the dynamically learned addresses from the cache. -.It Dv SIOCBRDGARL -.Pq Li "struct ifbrlreq" +.It Dv SIOCBRDGARL Fa "struct ifbrlreq *" Add an Ethernet address filtering rule to the bridge on a specific interface. -.Fa ifbr_name +.Va ifbr_name contains the name of the bridge device, and -.Fa ifbr_ifsname +.Va ifbr_ifsname contains the name of the bridge member interface. +.Pp +Rules are applied in the order in which they were added to the bridge, +and the first matching rule's action parameter determines the fate of +the packet. The -.Fa ifbr_action +.Va ifbr_action field is one of -.Fa BRL_ACTION_PASS +.Dv BRL_ACTION_PASS or -.Fa BRL_ACTION_BLOCK , -to pass or block matching frames respectively. +.Dv BRL_ACTION_BLOCK , +to pass or block matching frames, respectively. The -.Fa ifbr_flags -specifies whether the rule should match on input, output, or both -be using the flags -.Fa BRL_FLAG_IN +.Va ifbr_flags +field specifies whether the rule should match on input, output, or both +by using the flags +.Dv BRL_FLAG_IN and -.Fa BRL_FLAG_OUT . -It also specifies whether either (or both) of the source and destination +.Dv BRL_FLAG_OUT . +At least one of these flags must be set. +.Pp +The +.Va ifbr_flags +field +also specifies whether either (or both) of the source and destination addresses should be matched by using the -.Fa BRL_FLAG_SRCVALID +.Dv BRL_FLAG_SRCVALID and -.Fa BRL_FLAG_DSTVALID +.Dv BRL_FLAG_DSTVALID flags. The -.Fa ifbr_src +.Va ifbr_src field is the source address that triggers the rule (only considered if -.Fa ifbr_flags +.Va ifbr_flags has the -.Fa BRL_FLAG_SRCVALID +.Dv BRL_FLAG_SRCVALID bit set). The -.Fa ifbr_src +.Va ifbr_src field is the destination address that triggers the rule (only considered if -.Fa ifbr_flags +.Va ifbr_flags has the -.Fa BRL_FLAG_DSTVALID +.Dv BRL_FLAG_DSTVALID bit set). +If neither bit is set, the rule matches all frames. .Pp The argument structure is as follows: -.Bd -literal -offset indent +.Bd -literal struct ifbrlreq { - char ifbr_name[IFNAMSIZ]; - char ifbr_ifsname[IFNAMSIZ]; - u_int8_t ifbr_action; - u_int8_t ifbr_flags; - struct ether_addr ifbr_src; - struct ether_addr ifbr_dst; - char ifbr_tagname[PF_TAG_NAME_SIZE]; + char ifbr_name[IFNAMSIZ]; /* bridge ifs name */ + char ifbr_ifsname[IFNAMSIZ]; /* member ifs name */ + u_int8_t ifbr_action; /* disposition */ + u_int8_t ifbr_flags; /* flags */ + struct ether_addr ifbr_src; /* source mac */ + struct ether_addr ifbr_dst; /* destination mac */ + char ifbr_tagname[PF_TAG_NAME_SIZE]; /* pf tagname */ }; -#define BRL_ACTION_BLOCK 0x01 -#define BRL_ACTION_PASS 0x02 -#define BRL_FLAG_IN 0x08 -#define BRL_FLAG_OUT 0x04 +#define BRL_ACTION_BLOCK 0x01 /* block frame */ +#define BRL_ACTION_PASS 0x02 /* pass frame */ +#define BRL_FLAG_IN 0x08 /* input rule */ +#define BRL_FLAG_OUT 0x04 /* output rule */ +#define BRL_FLAG_SRCVALID 0x02 /* src valid */ +#define BRL_FLAG_DSTVALID 0x01 /* dst valid */ .Ed -.It Dv SIOCBRDGFRL -.Pq Li "struct ifbrlreq" +.It Dv SIOCBRDGFRL Fa "struct ifbrlreq *" Remove all filtering rules from a bridge interface member. -.Fa ifbr_name +.Va ifbr_name contains the name of the bridge device, and -.Fa ifbr_ifsname +.Va ifbr_ifsname contains the name of the bridge member interface. -.It Dv SIOCBRDGGRL -.Pq Li "struct ifbrlconf" +.It Dv SIOCBRDGGRL Fa "struct ifbrlconf *" Retrieve all of the rules from the bridge, -.Fa ifbrl_name , +.Va ifbrl_name , for the member interface, -.Fa ifbrl_ifsname . +.Va ifbrl_ifsname . This request takes an -.Li ifbrlconf -structure (see below) as a value result parameter. +.Vt ifbrlconf +structure (see below) as a value-result parameter. The -.Fa ifbrl_len +.Va ifbrl_len field should be initially set to the size of the buffer pointed to by -.Fa ifbrl_buf . +.Va ifbrl_buf . On return, it will contain the length, in bytes, of the configuration list. +.Pp Alternatively, if the -.Fa ifbrl_len +.Va ifbrl_len passed in is set to 0, .Dv SIOCBRDGGRL will set it to the size that -.Fa ifbrl_buf -needs to be to fit the entire configuration list and not fill in the other +.Va ifbrl_buf +needs to be to fit the entire configuration list, and will not fill in the other parameters. As with .Dv SIOCBRDGIFS , this is useful for determining the exact size that -.Fa ifbrl_buf +.Va ifbrl_buf needs to be in advance. .Pp The argument structure is defined as follows: -.Bd -literal -offset indent +.Bd -literal struct ifbrlconf { - char ifbrl_name[IFNAMSIZ]; /* brdg nam */ - char ifbrl_ifsname[IFNAMSIZ];/* ifs name */ - u_int32_t ifbr_len; /* buf len */ + char ifbrl_name[IFNAMSIZ]; /* bridge ifs name */ + char ifbrl_ifsname[IFNAMSIZ]; /* member ifs name */ + u_int32_t ifbrl_len; /* buffer size */ union { - caddr_t ifbrlu_buf; - struct ifbrlreq *ifbrlu_req; - } ifrl_ifbrlu; -#define ifbrl_buf ifbrl_ifbrlu.ifbrlu_buf -#define ifbrl_req ifbrl_ifbrlu.ifbrlu_req -}; -.Ed -.It Dv SIOCBRDGARL -.Pq Li "struct ifbrlreq" -Add a filtering rule to the bridge named in -.Fa ifbr_name -on the interface named in -.Fa ifbr_ifsname . -The argument structure is as follows: -.Bd -literal -offset indent -struct ifbrlreq { - char ifbr_name[IFNAMSIZ]; /* bridge */ - char ifbr_ifsname[IFNAMSIZ]; /* ifs */ - u_int8_t ifbr_action; /* handling */ - u_int8_t ifbr_flags; /* flags */ - struct ether_addr ifbr_src; /* src mac */ - struct ether_addr ifbr_dst; /* dst mac */ -}; -#define BRL_ACTION_BLOCK 0x01 -#define BRL_ACTION_PASS 0x02 -#define BRL_FLAG_IN 0x08 -#define BRL_FLAG_OUT 0x04 -#define BRL_FLAG_SRCVALID 0x02 -#define BRL_FLAG_DSTVALID 0x01 -.Ed -.Pp -Rules are applied in the order in which they were added to the bridge, -and the first matching rule's action parameter determines the fate of -the packet. -The -.Fa ifbr_action -parameter specifies whether a frame matching the rule is to -be blocked or passed. -.Pp -If the -.Dv BRL_FLAG_IN -bit is set in -.Fa ifbr_flags , -then the rule applies to frames received by the interface. -If the -.Dv BRL_FLAG_OUT -bit is set, then the rule applies to frame transmitted by the interface. -At least one of -.Dv BRL_FLAG_IN -or -.Dv BRL_FLAG_OUT -must be set. -.Pp -The source Ethernet address in -.Fa ifbr_src -is checked if the -.Dv BRL_FLAG_SRCVALID -bit is set in -.Fa ifbr_flags . -The destination address in -.Fa ifbr_dst -is checked if the -.Dv BRL_FLAG_DSTVALID -bit is set. -If neither bit is set, the rule matches all frames. -.It Dv SIOCBRDGFRL -.Pq Li "struct ifbrlreq" -Flush rules from the bridge -.Fa ifbr_name -on the interface -.Fa ifbr_ifsname . -.It Dv SIOCBRDGGRL -.Pq Li "struct ifbrlconf" -Retrieve an array of rules from the bridge for a particular interface. -This request takes an -.Li ifbrlconf -structure (see below) as a value-result parameter. -The -.Fa ifbrl_len -field should be initially set to the size of the buffer -pointed to by -.Fa ifbrl_buf . -On return it will contain the length, in bytes, of the rule list. -Alternatively, if the -.Fa ifbrl_len -passed in is set to 0, -.Dv SIOCBRDGGRL -will set -.Fa ifbrl_len -to the size that -.Fa ifbrl_buf -needs to be to fit the entire configuration list, -and will not fill in the other parameters. -This is useful for determining the exact size that -.Fa ifbrl_buf -needs to be in advance. -.Pp -The argument structure is as follows: -.Bd -literal -offset indent -struct ifbrlconf { - char ifbrl_name[IFNAMSIZ]; /* bridge */ - char ifbrl_ifsname[IFNAMSIZ];/* member */ - u_int32_t ifbrl_len; /* buflen */ - union { - caddr_t ifbrlu_buf; - struct ifbrlreq *ifbrlu_req; + caddr_t ifbrlu_buf; + struct ifbrlreq *ifbrlu_req; } ifbrl_ifbrlu; -#define ifbrl_buf ifbrl_ifbrlu.ifbrlu_buf -#define ifbrl_req ifbrl_ifbrlu.ifbrlu_req +#define ifbrl_buf ifbrl_ifbrlu.ifbrlu_buf +#define ifbrl_req ifbrl_ifbrlu.ifbrlu_req }; .Ed +.\" .It Dv SIOCBRDGGSIFS Fa "struct ifbreq *" +.It Dv SIOCBRDGGPRI Fa "struct ifbrparam *" +Retrieve the Spanning Tree Protocol (STP) priority parameter of the bridge into +the +.Va ifbrp_prio +field. +.It Dv SIOCBRDGSPRI Fa "struct ifbrparam *" +Set the STP priority parameter of the bridge to the value in +.Va ifbrp_prio . +.It Dv SIOCBRDGGHT Fa "struct ifbrparam *" +Retrieve the STP hello time parameter, in seconds, of the bridge into the +.Va ifbrp_hellotime +field. +.It Dv SIOCBRDGSHT Fa "struct ifbrparam *" +Set the STP hello time parameter, in seconds, of the bridge to the value in +.Va ifbrp_hellotime . +The value in +.Va ifbrp_hellotime +cannot be zero. +.It Dv SIOCBRDGGFD Fa "struct ifbrparam *" +Retrieve the STP forward delay parameter, in seconds, of the bridge into the +.Va ifbrp_fwddelay +field. +.It Dv SIOCBRDGSFD Fa "struct ifbrparam *" +Set the STP forward delay parameter, in seconds, of the bridge to the value in +.Va ifbrp_fwddelay . +The value in +.Va ifbrp_fwddelay +cannot be zero. +.It Dv SIOCBRDGGMA Fa "struct ifbrparam *" +Retrieve the STP maximum age parameter, in seconds, of the bridge into the +.Va ifbrp_maxage +field. +.It Dv SIOCBRDGSMA Fa "struct ifbrparam *" +Set the STP maximum age parameter, in seconds, of the bridge to the value in +.Va ifbrp_maxage . +The value in +.Va ifbrp_maxage +cannot be zero. +.It Dv SIOCBRDGSIFPRIO Fa "struct ifbreq *" +Set the STP priority parameter of the interface named in +.Va ifbr_ifsname +to the value in +.Va ifbr_priority . +.It Dv SIOCBRDGSIFCOST Fa "struct ifbreq *" +Set the STP cost parameter of the interface named in +.Va ifbr_ifsname +to the value in +.Va ifbr_path_cost . +The value in +.Va ifbr_path_cost +must be greater than or equal to one. .El .Sh ERRORS If the @@ -547,35 +517,35 @@ call fails, .Xr errno 2 is set to one of the following values: .Bl -tag -width Er -.It Bq Eq ENOENT +.It Bq Er ENOENT For an add request, this means that the named interface is not configured into the system. For a delete operation, it means that the named interface is not a member of the bridge. For an address cache deletion, the address was not found in the table. -.It Bq Eq ENOMEM +.It Bq Er ENOMEM Memory could not be allocated for an interface or cache entry to be added to the bridge. -.It Bq Eq EEXIST +.It Bq Er EEXIST The named interface is already a member of the bridge. -.It Bq Eq EBUSY +.It Bq Er EBUSY The named interface is already a member of another bridge. -.It Bq Eq EINVAL -The named interface is not an Ethernet interface or an invalid ioctl +.It Bq Er EINVAL +The named interface is not an Ethernet interface, or an invalid ioctl was performed on the bridge. -.It Bq Eq ENETDOWN -Address cache operation (flush, add, delete) on a bridge that is +.It Bq Er ENETDOWN +Address cache operation (flush, add, or delete) on a bridge that is in the down state. -.It Bq Eq EPERM +.It Bq Er EPERM Super-user privilege is required to add and delete interfaces to and from bridges and to set the bridge interface flags. -.It Bq Eq EFAULT +.It Bq Er EFAULT The buffer used in a .Dv SIOCBRDGIFS or .Dv SIOCBRDGRTS request points outside of the process's allocated address space. -.It Bq Eq ESRCH +.It Bq Er ESRCH No such member interface in the bridge. .El .Sh NOTES @@ -584,7 +554,7 @@ Bridged packets pass through twice. They can be filtered on any interface, in both directions. For stateful filtering, filtering on only one interface (using -.Sq keep state ) +.Ic keep state ) and passing all traffic on the other interfaces is recommended. A state entry only permits outgoing packets from initial source to destination and incoming packets from initial destination to source. @@ -598,19 +568,19 @@ kernel routing table. Instead, PF will send these replies back to the same Ethernet address that the original packet came from. This applies to rules with -.Ar return , -.Ar return-rst , -.Ar return-icmp , -.Ar return-icmp6 +.Ic return , +.Ic return-rst , +.Ic return-icmp , +.Ic return-icmp6 , or -.Ar synproxy +.Ic synproxy defined. At the moment, only -.Ar return-rst +.Ic return-rst on IPv4 is implemented and the other packet generating rules are unsupported. .Pp -If an IP packet is too large for the outgoing interface the bridge +If an IP packet is too large for the outgoing interface, the bridge will perform IP fragmentation. This can happen when bridge members have different MTUs or when IP fragments are reassembled by @@ -618,8 +588,10 @@ have different MTUs or when IP fragments are reassembled by Non-IP packets which are too large for the outgoing interface will be dropped. .Pp -If the LINK2 flag is set on the -.Nm bridge +If the +.Dv IFF_LINK2 +flag is set on the +.Nm interface, the bridge will also perform transparent .Xr ipsec 4 processing on the packets (encrypt or decrypt them), according to the @@ -634,7 +606,7 @@ necessary SAs. These daemons have to be configured as if they were running on the host whose traffic they are protecting (i.e., they need to have the appropriate authentication and authorization material, such as keys -and certificates, to impersonate the protected host(s). +and certificates, to impersonate the protected host(s)). .Sh SEE ALSO .Xr errno 2 , .Xr ioctl 2 , @@ -648,19 +620,20 @@ and certificates, to impersonate the protected host(s). .Xr bridgename.if 5 , .Xr brconfig 8 , .Xr ipsecadm 8 , -.Xr isakmpd 8 +.Xr isakmpd 8 , +.Xr netstart 8 .Sh HISTORY The .Xr brconfig 8 command and the -.Nm bridge +.Nm kernel interface first appeared in .Ox 2.5 . .Sh AUTHORS The .Xr brconfig 8 command and the -.Nm bridge +.Nm kernel interface were written by .An Jason L. Wright Aq jason@thought.net as part of an undergraduate independent study at the |