src/sys/dev/netmap/netmap_mem2.c, branch release/12.2.0

MFC r357159

2020-01-29T22:55:59Z

netmap_mem_unmap: fix NULL pointer dereference

MFC r353775

2019-10-27T09:28:33Z

netmap: minor misc improvements - use ring->head rather than ring->cur in lb(8) - use strlcat() rather than strncat() - fix bandwidth computation in pkt-gen(8)

MFC r351657

2019-09-15T14:26:19Z

netmap: import changes from upstream (SHA 137f537eae513) - Rework option processing. - Use larger integers for memory size values in the memory management code.

MFC r349753

2019-07-11T20:14:59Z

netmap: Remove pointer leakage in netmap_mem2.c PR: 238641 Submitted by: Fuqian Huang Reviewed by: vmaffione

MFC r345269, r345323

2019-04-01T10:51:24Z

netmap: add support for multiple host rings Some applications forward from/to host rings most or all the traffic received or sent on a physical interface. In this cases it is desirable to have more than a pair of RX/TX host rings, and use multiple threads to speed up forwarding. This change adds support for multiple host rings. On registering a netmap port, the user can specify the number of desired receive and transmit host rings in the nr_host_tx_rings and nr_host_rx_rings fields of the nmreq_register structure.

MFC r343772, r343867

2019-02-12T09:07:46Z

netmap: refactor logging macros and pipes Changelist: - Replace ND, D and RD macros with nm_prdis, nm_prinf, nm_prerr and nm_prlim, to avoid possible naming conflicts. - Add netmap_krings_mode_commit() helper function and use that to reduce code duplication. - Refactor pipes control code to export some functions that can be reused by the veth driver (on Linux) and epair(4). - Add check to reject API requests with version less than 11. - Small code refactoring for the null adapter.

MFC r341516, r341589

2018-12-11T11:31:13Z

netmap: align codebase to the current upstream (760279cfb2730a585) Changelist: - Replace netmap passthrough host support with a more general mechanism to call TXSYNC/RXSYNC from an in-kernel event-loop. No kernel threads are used to use this feature: the application is required to spawn a thread (or a process) and issue a SYNC_KLOOP_START (NIOCCTRL) command in the thread body. The kernel loop is executed by the ioctl implementation, which returns to userspace only when a different thread calls SYNC_KLOOP_STOP or the netmap file descriptor is closed. - Update the if_ptnet driver to cope with the new data structures, and prune all the obsolete ptnetmap code. - Add support for "null" netmap ports, useful to allocate netmap_if, netmap_ring and netmap buffers to be used by specialized applications (e.g. hypervisors). TXSYNC/RXSYNC on these ports have no effect. - Various fixes and code refactoring. Sponsored by: Sunny Valley Networks Differential Revision: https://reviews.freebsd.org/D18015

MFC r339639:

2018-10-30T08:36:36Z

netmap: align codebase to the current upstream (sha 8374e1a7e6941) Changelist: - Move large parts of VALE code to a new file and header netmap_bdg.[ch]. This is useful to reuse the code within upcoming projects. - Improvements and bug fixes to pipes and monitors. - Introduce nm_os_onattach(), nm_os_onenter() and nm_os_onexit() to handle differences between FreeBSD and Linux. - Introduce some new helper functions to handle more host rings and fake rings (netmap_all_rings(), netmap_real_rings(), ...) - Added new sysctl to enable/disable hw checksum in emulated netmap mode. - nm_inject: add support for NS_MOREFRAG Approved by: re (gjb)

netmap: pull fix for 32-bit support from upstream

2018-05-18T03:38:17Z

Approved by: sbruno

netmap: align codebase to the current upstream (commit id 3fb001303718146)

2018-04-12T07:20:50Z

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)