src-test2/sys/dev/hatm, branch release/5.2.0_cvs

This commit was manufactured by cvs2svn to create tag

2004-01-10T05:53:29Z

'RELENG_5_2_0_RELEASE'. This commit was manufactured to restore the state of the 5.2-RELEASE image. Releases prior to 5.3-RELEASE are omitting the secure/ and crypto/ subdirs.

Make the driver conditionally MPSAFE. MPSAFEty defaults to not-mpsafe

2003-11-05T11:47:31Z

but can be enabled by setting hw.atm.hatmN.mpsafe in the kernel environment to a non-zero value before loading the driver. When the problems with network MPSAFEty have been sorted out this will be removed and the driver will default to MPSAFE.

When compiled with debugging trace the number of transmit mbufs that

2003-11-05T11:43:06Z

we own. Warn if something strange happens (number drops below zero or there appears to be a leak).

Initialize the USED flag in new external receive buffers to 0, not to 1.

2003-11-05T11:15:47Z

We put them directly onto the free list instead of calling the external mbuf free routine (that routine would have cleaned the flag). This fixes a bug which manifests itself in falsely reporting a lot of used buffers when configuring the interface down.

Replace the if_name and if_unit members of struct ifnet with new members

2003-10-31T18:32:15Z

if_xname, if_dname, and if_dunit. if_xname is the name of the interface and if_dname/unit are the driver name and instance. This change paves the way for interface renaming and enhanced pseudo device creation and configuration symantics. Approved By: re (in principle) Reviewed By: njl, imp Tested On: i386, amd64, sparc64 Obtained From: NetBSD (if_xname)

Fix breakage on ia64: PAGE_SIZE on ia64 is large enough that more than

2003-10-31T13:35:22Z

256 raw receive buffers (96 byte each) fit into one page. This breaks the limit imposed by the usage of an uint8_t for the buffer number. Restrict the allocation size for buffers to a maximum of 8192.

Explain why the lock-free allocation algorithm is safe in our case

2003-10-30T16:19:50Z

while beeing not safe in the general case. Thanks to David Schultz for help.

Reinvent the used-flag for external mbufs. This and the on-card flag

2003-10-30T10:43:52Z

are now in the header of the external buffer itself which allows us to manipulate them in the free routine without having to lock the softc structure or the free list. To get space for these flags the chunk number is reduced to 8 bit which amounts to a maximum of 256 chunks per allocated page. This restriction is now enforced by a CTASSERT.

Allow sending of more than one raw cell from a single mbuf. Only the

2003-10-29T15:15:19Z

very first cell in the mbuf should have a cell header word (of which everything except the payload type and the CLP bit is ignored). All other cells should be 48 byte and get the same header as the first cell. This fixes a problem with sending more than 120000 raw cells/sec through an HE155. The card seems to need 2 cell times to DMA the transmit buffer ready queue entry and the transmit buffer descriptor so at 1/3 the link rate the transmit buffer ready queue starts to fill up. Even with this patch it's obviously impossible to send raw cells at link rate.

Remove a superfluous ) from the previous commit. This was obviously

2003-10-29T15:11:26Z

a result of the current solar storm.