43bbae1948
The driver uses both software resources (locks, callouts, memory for
descriptors and for bookkeeping, sysctls, etc.) and hardware resources
(VIs, DMA queues, TCAM entries, etc.) to operate the NIC. This commit
splits the single *_ALLOCATED flag used to track all these resources
into separate *_SW_ALLOCATED and *_HW_ALLOCATED flags.
This is the simplified pseudocode that now applies to most queues (foo
can be ctrlq/txq/rxq/ofld_txq/ofld_rxq):
/* Idempotent */
alloc_foo
{
if (!SW_ALLOCATED)
init_iq/init_eq/init_fl no-fail sw init
alloc_iq_fl/alloc_eq/alloc_wrq may-fail sw alloc
add_foo_sysctls, etc. no-fail post-alloc items
if (!HW_ALLOCATED)
alloc_iq_fl_hwq/alloc_eq_hwq hw resource allocation
}
/* Idempotent */
free_foo
{
if (!HW_ALLOCATED)
free_iq_fl_hwq/free_eq_hwq release hw resources
if (!SW_ALLOCATED)
free_iq_fl/free_eq/free_wrq release sw resources
}
The routines that take the driver to FULL_INIT_DONE and VI_INIT_DONE and
back are now all idempotent. The quiesce routines pay attention to the
HW_ALLOCATED flag and will not wait on the hardware for pidx/cidx
updates and other completions if this flag is not set.
MFC after: 1 month
Sponsored by: Chelsio Communications
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|---|---|---|
| .github/workflows | ||
| bin | ||
| cddl | ||
| contrib | ||
| crypto | ||
| etc | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| rescue | ||
| sbin | ||
| secure | ||
| share | ||
| stand | ||
| sys | ||
| targets | ||
| tests | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| .arcconfig | ||
| .arclint | ||
| .cirrus.yml | ||
| .clang-format | ||
| .gitattributes | ||
| .gitignore | ||
| COPYRIGHT | ||
| LOCKS | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| Makefile.libcompat | ||
| Makefile.sys.inc | ||
| ObsoleteFiles.inc | ||
| README.md | ||
| RELNOTES | ||
| UPDATING | ||
FreeBSD Source:
This is the top level of the FreeBSD source directory.
FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.
For copyright information, please see the file COPYRIGHT in this directory. Additional copyright information also exists for some sources in this tree - please see the specific source directories for more information.
The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7), config(8), FreeBSD handbook on building userland, and Handbook for kernels for more information, including setting make(1) variables.
Source Roadmap:
| Directory | Description |
|---|---|
| bin | System/user commands. |
| cddl | Various commands and libraries under the Common Development and Distribution License. |
| contrib | Packages contributed by 3rd parties. |
| crypto | Cryptography stuff (see crypto/README). |
| etc | Template files for /etc. |
| gnu | Various commands and libraries under the GNU Public License. Please see gnu/COPYING and gnu/COPYING.LIB for more information. |
| include | System include files. |
| kerberos5 | Kerberos5 (Heimdal) package. |
| lib | System libraries. |
| libexec | System daemons. |
| release | Release building Makefile & associated tools. |
| rescue | Build system for statically linked /rescue utilities. |
| sbin | System commands. |
| secure | Cryptographic libraries and commands. |
| share | Shared resources. |
| stand | Boot loader sources. |
| sys | Kernel sources. |
sys/arch/conf |
Kernel configuration files. GENERIC is the configuration used in release builds. NOTES contains documentation of all possible entries. |
| tests | Regression tests which can be run by Kyua. See tests/README for additional information. |
| tools | Utilities for regression testing and miscellaneous tasks. |
| usr.bin | User commands. |
| usr.sbin | System administration commands. |
For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see FreeBSD Handbook.