src/sys/net, branch release/5.4.0

If we are going to

2005-05-06T02:51:10Z

1. Copy a NULL-terminated string into a fixed-length buffer, and 2. copyout that buffer to userland, we really ought to 0. Zero the entire buffer first. Security: FreeBSD-SA-05:08.kmem Approved by: re (kensmith)

Zero the ifr.ifr_name buffer in ifconf() in order to avoid

2005-04-15T01:52:40Z

accidental disclosure of kernel memory to userland. Security: FreeBSD-SA-05:04.ifconf

Back out previous commit (MFC of removal of if_name() function) because

2005-04-12T00:48:59Z

it breaks the ABI for at least two kernel modules. The PR is still fixed because the real problem is only in 4.x.

MFC:

2005-04-12T00:05:10Z

Since net/net_osdep.c contained only one function that could be trivially implemented as a macro, do that and remove it. NetBSD did this quite a while ago. PR: kern/33201 Prodded by: Matteo Riondato

Merge bpf.c:1.144 from HEAD to RELENG_5:

2005-04-01T05:35:46Z

In bpf_setf(), protect against races between multiple user threads attempting to change the BPF filter on a BPF descriptor at the same time: retrieve the old filter pointer under the same locked region as setting the new pointer. Approved by: re (kensmith)

Merge bpf.c:1.143 from HEAD to RELENG_5:

2005-04-01T05:35:10Z

Update a comment describing bpf_iflist to indicate that the BPF interface structures correspond to specific link layers, so the same network interface may appear more than once. Approved by: re (kensmith)

MFC:

2005-03-31T14:58:36Z

o Enable all supported frame types when neither is enabled explicitly in the kernel config; o fix ef(4) driver when kernel compiled w/o IPX. Approved by: re (kensmith)

MFC r1.147:

2005-03-30T05:11:12Z

You must selwakeup{,pri}() when closing a selectable object or the td->td_sel will get trashed and crash the system. Fix BPF's mistake in this area. Approved by: re

MFC:

2005-03-28T13:05:40Z

Zero the reserved fields of the header, as per rfc 2734. This change results in connectivty to MacOSX hosts via fwip. Approved by: re (kensmith)

MFC Common Address Redundancy Protocol implementation.

2005-03-21T16:05:36Z

Approved by: re