src-test2/sys/dev/hfa, branch release/4.11.0

MFC: Implement CBR traffic shaping for the Fore adapters. This is controled

2003-08-22T14:49:24Z

by the sysctl hw.fore.hfaN.shape, which can be set to 0 (don't shape), 1 (shape at most one channel) and 2 (try to shape all channels). This works only with firmware version > 4, which is the default now. Submitted by: Vincent Jardin

For some reason the hfa driver behaves differently between current and

2003-08-22T10:32:20Z

stable when loaded with 4.X.Y firmware. This difference manifests itself in the card returning receive buffer chains that start with a large buffer under certain circumstances. This uncovered an inherent bug in the mbuf handling of the atm stack: the driver prefixes 8 bytes to the mbuf that contain a function address to dispatch this buffer to and a cookie for this function. When the driver finds, that it has no space at the head of the mbuf chain, it allocates a new packet header mbuf and prepends it to the chain and moves the header to the new mbuf. atm_intr() strips the additional 8 bytes from the mbuf chain and, if it finds the first mbuf to become empty, removes that mbuf from the chain, but does not care to move the header to the next mbuf. Here the packet header is lost. Work around: 1. Allocate all large buffers for the Fore card with a packet header. 2. When prefixing the new mbuf to the chain, don't move the packet header, but initialize it with the correct values. This results in an mbuf chain with two packet headers. When atm_intr strips the first mbuf, everything is ok. It would probably be better to fix the problem instead of working around it, but this could break other drivers (hea and proatm).

MFC fore_aali.h:1.4, fore_command.c:1.15, fore_init.c:1.14,

2003-08-20T11:05:28Z

fore_intr.c:1.10, fore_var.h:1.8: Make the driver to work with firmware version 4.1.12 (other 4.X.Y should also do it). Three problems have been encountered: 1. The initialisation command does not work in interrupt mode. Whether this is a firmware bug or a feature is not clear. The original Fore drivers execute the initialize command always in polling mode, so it appears that this behaviour is expected. When we detect a 4.X.Y firmware do busy wait on the command status. 2. The command code of the GET_PROM has changed. This is an unofficial command anyway. What was GET_PROM in 3.X.Y is CLEAR_STATS in 4.X.Y (although unimplemented in the firmware). We need to use the correct code depending on the firmware. 3. The 4.X.Y can set the error flag in command status without also setting the completion flag (as the documentation says). Check both variants. An additional field in the per-card structure fu_ft4 is TRUE when we have detected a 4.X.Y firmware. Otherwise it is false. The behaviour of the driver when using 3.X.Y should be identical to the previous behaviour . This change will enable traffic shaping of CBR channels.

MFC: m_tag support

2003-01-23T21:06:48Z

Replace aux mbufs with packet tags: o instead of a list of mbufs use a list of m_tag structures a la openbsd o for netgraph et. al. extend the stock openbsd m_tag to include a 32-bit ABI/module number cookie o for openbsd compatibility define a well-known cookie MTAG_ABI_COMPAT and use this in defining openbsd-compatible m_tag_find and m_tag_get routines o rewrite KAME use of aux mbufs in terms of packet tags o eliminate the most heavily used aux mbufs by adding an additional struct inpcb parameter to ip_output and ip6_output to allow the IPsec code to locate the security policy to apply to outbound packets o bump __FreeBSD_version so code can be conditionalized o fixup ipfilter's call to ip_output based on __FreeBSD_version

Applied the patch to fix HARP ATM that was broken when KAME IPv6 came

2001-07-20T20:43:17Z

into FreeBSD. PR: kern/23620 Submitted by: rh@matriplex.com

Ensure that DMA mappings are freed in error situations.

2000-01-15T21:01:04Z

Remove five now unused fields from struct cdevsw. They should never

1999-09-25T18:24:47Z

have been there in the first place. A GENERIC kernel shrinks almost 1k. Add a slightly different safetybelt under nostop for tty drivers. Add some missing FreeBSD tags

Fixed printf format errors (don't assume that ntohl() returns u_long;

1999-08-29T10:28:10Z

it returns u_int on i386's and in_addr_t (u_int32_t) on alphas).

$Id$ -> $FreeBSD$

1999-08-28T01:08:13Z

Implement a new generic mechanism for attaching handler functions to

1999-08-21T06:24:40Z

events, in order to pave the way for removing a number of the ad-hoc implementations currently in use. Retire the at_shutdown family of functions and replace them with new event handler lists. Rework kern_shutdown.c to take greater advantage of the use of event handlers. Reviewed by: green