Date: Thu, 3 May 2001 18:02:10 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: current@freebsd.org Subject: Re: panic in fxp driver Message-ID: <200105031802.LAA28955@usr05.primenet.com>
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] I would be quite interested in knowing just how you manage
] to accomplish that, given that all the transmit control buffers
] are arranged in a circular linked list:
]
] fxp_init(void *xsc)
] {
] ...
] for (i = 0; i < FXP_NTXCB; i++) {
] ...
] txp[i].next = &txp[(i + 1) & FXP_TXCB_MASK];
] }
]
]
] I would suggest actually examining the rest of the code to see
] how it works before making erroneous proclamations based on the
] myopic examination of a single statement.
I would suggest a less than myopic examination of the subject
line.
In particular, I saw a repeatable panic under extremely heavy
load.
Please consider the case where there are two mbuf chains being
transmitted, which look like this:
A B
header O O
\ /
\ /
\ /
data 1 O
|
data 2 O
|
data 3 O
Terry Lambert
terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.
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