6405012 dld_wsrv() can hog a cpu when driver runs out of tx resources

[eric.ch...@sun.com]

Author: ericheng
Repository: /hg/onnv/onnv-gate
Revision: 904f8f63f4cdad7571acb0422d8db7cceef16498
Log message:
6405012 dld_wsrv() can hog a cpu when driver runs out of tx resources

Files:
        update: usr/src/uts/common/io/dld/dld_str.c