* Factor out struct selinfo and its header dependencies into its own header,
<sys/selinfo.h>, to avoid namespace pollution.
* Include <sys/selinfo.h> in user-visible headers where necessary.
The value of 50 dates back to 4.3BSD and 10Mbit interfaces.
Gigabit interfaces are 100x faster, and by observation, when heavy
interrupt mitigation is enabled, gigabit interfaces can enqueue 40 packets
or more in a single hardware interrupt. So IFQ_MAXLEN of 256 is adequate
for at least four gigabit interfaces.
Increasing IFQ_MAXLEN discussed and approved, in priniciple, circa Apr 2004.
The value is sysctl'able, so the default is no longer so critical,
but (imho) best to tune for high-performane systems by default.
in various ethernet adapter drivers and improve code consistency; mostly
FreeBSD-compatible, with exception of VLAN_OUTPUT_TAG(), which takes
(struct ethercom *) rather than (struct ifnet *) as first parameter
since the information cannot be extracted via (struct ifnet)
also add VLAN_ATTACHED(ec), which tests if any VLAN is attached to the
ethernet device
Hans Rosenfeld (rosenfeld at grumpf.hope-2000.org)
This change makes it possible to add gif interfaces to bridges, which
will then send and receive IP protocol 97 packets. Packets are Ethernet
frames with an EtherIP header prepended.
- Allow rn_init() to be called multiple times, but do nothing except the
first call.
- Include opt_inet.h so that #ifdef INET works.
- Call rn_init() from encap_init() explicitly rather than depending on the
order of initialization.
NAME
tap - virtual Ethernet device
SYNOPSIS
pseudo-device tap
DESCRIPTION
The tap driver allows the creation and use of virtual Ethernet devices.
Those interfaces appear just as any real Ethernet NIC to the kernel, but
can also be accessed by userland through a character device node in order
to read frames being sent by the system or to inject frames.
In that respect it is very similar to what tun(4) provides, but the added
Ethernet layer allows easy integration with machine emulators or virtual
Ethernet networks through the use of bridge(4) with tunneling.
``Qui tacet consentire videtur.''
rather than being removed. Also fixed a small comment about the scope of
#if's.
This code is a but ugly IMHO but as long as we dont have to change it ....
explicitly only for the protocols indicated by the #if
Allthough its unlikely a kernel will be build without NET_INET, it will
fail compilation here when NET_INET is not defined.
malloc_type M_IFADDR and freed with malloc_type M_DEVBUF. This
causes a panic(9) in DIAGNOSTIC kernels. Add malloc_type M_IFMEDIA
and use it for both malloc'ing and free'ing ifmedia_entrys.
When the ethernet interface of a pppoe pseudo-interface detaches, remove
the association and mark the pppoe interface down.
This should fix PR kern/28375.
<net/if_dl.h> defines struct sockaddr_dl. On the line defining member
"sdl_family" (which overlaps "sa_family" in struct sockaddr), the
comment says AF_DLI.
But,
1) AF_DLI is said to be a DEC Direct data link interface
(sys/socket.h)
2) The kernel actually sends sockaddr_dl structs with AF_LINK.
Quiting Tom: The problem is the special case of an RTM_GET message
that wants interface information included in the response, and
therefore include the RTA_IFA or RTA_IFP (or both) flags in the
bitmask that says what addresses are supplied in the message. For
the RTM_GET message, it doesn't make sense to supply addresses
other than the one you're asking about, so those two other bits
are, in that specific case, overloaded with this meaning.
There is code in sys/net/rtsock.c to handle the case, but at some
time, extra sanity checking of the received message was added, that
failed to take this possibility into account.
The patch, is needed for the Asterisk software PBX to work properly
when it has multiple interfaces active: it needs to ask the kernel
for the IP address of the interface that will be used to communicate
with a given host.
1.) There is objection against this change by at least one developer.
2.) These changes cause repeatable system lockups and crashes for
at least four people.
received packets in csum_flags in the packet header. Packets that are
forwarded over the bridge need to have csum_flags cleared before being
put on the output queue. Do so in bridge_enqueue().
Discussed with Jason Thorpe.
Fixes PR kern/27007 and the first part of PR kern/21831.
This prevent a variety of fun panics, and therefore fixes PR 12932, PR 17561,
and PR 18376...
XXX
...however this is most definitely a hack. The real problem here is that there
is no callback to notify a "client" interface like vlan when a "parent"
interface's status changes, and therefore the vlan interface is always
IFF_RUNNING. This allows packets to be queued on vlan interface at any time.
We can't simply leave the packets on the vlan interface, either, because there
is no callback to dequeue them. And last, since it's always IFF_RUNNING, if
we just *toss* the packets, we lose gratuitous ARPs and DAD packets.
"This needs work," but at least it no longer bleeds.
the functionality of M_PREPEND, but with a bug: m_pkthdr.len was
not updated in pppoutput as it is in M_PREPEND.
Also, replace the loop that measures the length of the mbuf chain
with a call to m_length.
This fixes a PR from an anonymous bug reporter. Thank you, anonymous
bug reporter. Thanks, Itojun, for bringing the anonymous bug report
to my attention.
for consistency with M_FREE() and m_freem(). Affected files:
sys/mbuf.h
kern/uipc_socket2.c
kern/uipc_mbuf.c
net/if_ethersubr.c
netatalk/ddp_input.c
nfs/nfs_socket.c
Add bpf_deliver prototype.
Rename bpf_measure to m_length and move it to sys/sys/mbuf.h. I
make m_length an inline function in the header file to preserve
its performance characteristics, for better or for worse.
Optimize m_length: use the length in m_pkthdr.len, if M_PKTHDR.
In bpf_deliver, zero the on-stack mbuf before we do anything else
with it.
* always acquire the device instance lock at splnet()
* missing unlocks in various places
Also, since this driver allows its device instances manipulated by two
independent subsystems (character device & interface clone create/destroy),
be careful not to rip away instance data in a clone destroy request if the
instance is still opened as a character device.
(MD5 signatures for TCP, as used with BGP). Credit for original
FreeBSD code goes to Bruce M. Simpson, with FreeBSD sponsorship
credited to sentex.net. Shortening of the setsockopt() name
attributed to Vincent Jardin.
This commit is a minimal, working version of the FreeBSD code, as
MFC'ed to FreeBSD-4. It has received minimal testing with a ttcp
modified to set the TCP-MD5 option; BMS's additions to tcpdump-current
(tcpdump -M) confirm that the MD5 signatures are correct. Committed
as-is for further testing between a NetBSD BGP speaker (e.g., quagga)
and industry-standard BGP speakers (e.g., Cisco, Juniper).
NOTE: This version has two potential flaws. First, I do see any code
that verifies recieved TCP-MD5 signatures. Second, the TCP-MD5
options are internally padded and assumed to be 32-bit aligned. A more
space-efficient scheme is to pack all TCP options densely (and
possibly unaligned) into the TCP header ; then do one final padding to
a 4-byte boundary. Pre-existing comments note that accounting for
TCP-option space when we add SACK is yet to be done. For now, I'm
punting on that; we can solve it properly, in a way that will handle
SACK blocks, as a separate exercise.
In case a pullup to NetBSD-2 is requested, this adds sys/netipsec/xform_tcp.c
,and modifies:
sys/net/pfkeyv2.h,v 1.15
sys/netinet/files.netinet,v 1.5
sys/netinet/ip.h,v 1.25
sys/netinet/tcp.h,v 1.15
sys/netinet/tcp_input.c,v 1.200
sys/netinet/tcp_output.c,v 1.109
sys/netinet/tcp_subr.c,v 1.165
sys/netinet/tcp_usrreq.c,v 1.89
sys/netinet/tcp_var.h,v 1.109
sys/netipsec/files.netipsec,v 1.3
sys/netipsec/ipsec.c,v 1.11
sys/netipsec/ipsec.h,v 1.7
sys/netipsec/key.c,v 1.11
share/man/man4/tcp.4,v 1.16
lib/libipsec/pfkey.c,v 1.20
lib/libipsec/pfkey_dump.c,v 1.17
lib/libipsec/policy_token.l,v 1.8
sbin/setkey/parse.y,v 1.14
sbin/setkey/setkey.8,v 1.27
sbin/setkey/token.l,v 1.15
Note that the preceding two revisions to tcp.4 will be
required to cleanly apply this diff.
to pool_init. Untouched pools are ones that either in arch-specific
code, or aren't initialiased during initial system startup.
Convert struct session, ucred and lockf to pools.
agc