Commit Graph

6 Commits

Author SHA1 Message Date
Vincenzo Maffione
2ff91c175e netmap: align codebase to the current upstream (commit id 3fb001303718146)
Changelist:
    - Turn tx_rings and rx_rings arrays into arrays of pointers to kring
      structs. This patch includes fixes for ixv, ixl, ix, re, cxgbe, iflib,
      vtnet and ptnet drivers to cope with the change.
    - Generalize the nm_config() callback to accept a struct containing many
      parameters.
    - Introduce NKR_FAKERING to support buffers sharing (used for netmap
      pipes)
    - Improved API for external VALE modules.
    - Various bug fixes and improvements to the netmap memory allocator,
      including support for externally (userspace) allocated memory.
    - Refactoring of netmap pipes: now linked rings share the same netmap
      buffers, with a separate set of kring pointers (rhead, rcur, rtail).
      Buffer swapping does not need to happen anymore.
    - Large refactoring of the control API towards an extensible solution;
      the goal is to allow the addition of more commands and extension of
      existing ones (with new options) without the need of hacks or the
      risk of running out of configuration space.
      A new NIOCCTRL ioctl has been added to handle all the requests of the
      new control API, which cover all the functionalities so far supported.
      The netmap API bumps from 11 to 12 with this patch. Full backward
      compatibility is provided for the old control command (NIOCREGIF), by
      means of a new netmap_legacy module. Many parts of the old netmap.h
      header has now been moved to netmap_legacy.h (included by netmap.h).

Approved by:	hrs (mentor)
2018-04-12 07:20:50 +00:00
Vincenzo Maffione
4f80b14ce2 netmap: align codebase to upstream version v11.4
Changelist:
  - remove unused nkr_slot_flags
  - new nm_intr adapter callback to enable/disable interrupts
  - remove unused sysctls and document the other sysctls
  - new infrastructure to support NS_MOREFRAG for NIC ports
  - support for external memory allocator (for now linux-only),
    including linux-specific changes in common headers
  - optimizations within netmap pipes datapath
  - improvements on VALE control API
  - new nm_parse() helper function in netmap_user.h
  - various bug fixes and code clean up

Approved by:	hrs (mentor)
2018-04-09 09:24:26 +00:00
Vincenzo Maffione
46023447b6 netmap: align if_ptnet guest driver to the upstream code (commit 0e15788)
The change upgrades the driver to use the split Communication Status
Block (CSB) format. In this way the variables written by the guest
and read by the host are allocated in a different cacheline than
the variables written by the host and read by the guest; this is
needed to avoid cache thrashing.

Approved by:	hrs (mentor)
2018-04-04 21:31:12 +00:00
Luigi Rizzo
844a6f0c53 Various fixes for ptnet/ptnetmap (passthrough of netmap ports). In detail:
- use PCI_VENDOR and PCI_DEVICE ids from a publicly allocated range
  (thanks to RedHat)
- export memory pool information through PCI registers
- improve mechanism for configuring passthrough on different hypervisors
Code is from Vincenzo Maffione as a follow up to his GSOC work.
2016-10-27 09:46:22 +00:00
Luigi Rizzo
a2a7409151 remove stale and unused code from various files
fix build on 32 bit platforms
simplify logic in netmap_virt.h

The commands (in net/netmap.h) to configure communication with the
hypervisor may be revised soon.
At the moment they are unused so this will not be a change of API.
2016-10-18 16:18:25 +00:00
Luigi Rizzo
a82ab41168 add a missing header. 2016-10-16 18:27:41 +00:00