kernel.git/drivers/scsi/fcoe/libfcoe.c, branch linux-2.6.30.y

[SCSI] fcoe: fix spelling typos and bad comments

2009-04-27T15:19:28Z

Signed-off-by: Chris Leech Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] fcoe, libfcoe: Add support for FIP. FCoE discovery and keep-alive.

2009-04-03T14:23:08Z

FIP is the new standard way to discover Fibre-Channel Forwarders (FCFs) by sending solicitations and listening for advertisements from FCFs. It also provides for keep-alives and period advertisements so that both parties know they have connectivity. If the FCF loses connectivity to the storage fabric, it can send a Link Reset to inform the E_node. This version is also compatible with pre-FIP implementations, so no configured selection between FIP mode and non-FIP mode is required. We wait a couple seconds after sending the initial solicitation and then send an old-style FLOGI. If we receive any FIP frames, we use FIP only mode. If the old FLOGI receives a response, we disable FIP mode. After every reset or link up, this determination is repeated. Signed-off-by: Joe Eykholt Signed-off-by: Vasu Dev Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] fcoe: moves common FCoE library API functions to libfcoe module

2009-04-03T14:23:05Z

Moves these functions as-is from fcoe.c to libfcoe.c, since they're are common routines: - fcoe_wwn_from_mac - fcoe_libfc_config Signed-off-by: Vasu Dev Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] fcoe, libfc: add libfcoe module

2009-04-03T14:23:04Z

Just sets up build environment for libfcoe module towards a libfcoe library for libfc LLDs using FCoE as libfc transport. Common library code to libfcoe is added in next patch. Also, updated MODULE_LICENSE from "GPL" string to "GPL v2" for libfc, libfcoe and fcoe modules to accurately match the licenses. Signed-off-by: Vasu Dev Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] fcoe: renames libfcoe.c to fcoe.c as the only fcoe module file

2009-04-03T14:23:03Z

Renames libfcoe.c to fcoe.c, fcoe.c becomes the only .c file for fcoe.ko. Also deleted "$Id: Makefile" from fcoe module Makefle. Signed-off-by: Vasu Dev Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] fcoe: removes default sw transport code file fcoe_sw.c

2009-04-03T14:23:02Z

Moves only required code from fcoe_sw.c to libfcoe.c towards having just one source file for fcoe module, this gets rid off default sw transport code in a separate fcoe_sw.c file. Very minor renaming along this move, dropped _sw_ or _SW_ use in names and replaced them by _if_ as a auxiliary interface functions. Now some of these funcs can be removed or merged with other func after fcoe transport is gone, but that should be in another patch to keep this patch simple. Now the libfcoe.c file name for fcoe module doesn't go along well, so the libfcoe.c file renaming to fcoe.c as the only single fcoe module file is done in next patch to keep this patch clean and small for review. Signed-off-by: Vasu Dev Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] fcoe: prep work to completely remove fc_transport_fcoe code

2009-04-03T14:23:00Z

The fcoe transport code was added for generic FCoE transport infrastructure to allow additional offload related module loading on demand, this is not required anymore after recently added different offload approach by having offload related func ops in netdev. This patch removes fcoe transport related code use, calls functions directly between existing libfcoe.c and fcoe_sw.c for now, for example fcoe_sw_destroy and fcoe_sw_create calling. The fcoe_sw.c and libfcoe.c code will be further consolidated in later patches and then also the default fcoe sw transport code file fcoe_sw.c will be completely removed. The fcoe transport code files are completely removed in next patch to keep this patch simple for reviewing. [This patch is an update to a previous patch. This update resolves a build error as well as fixes a defect related to not calling fc_release_transport().] Signed-off-by: Vasu Dev Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] fcoe: create/destroy fcoe Rx threads on CPU hotplug events

2009-04-03T14:22:59Z

This patch adds support for dynamically created Rx threads upon CPU hotplug events. There were existing synchronization problems that this patch attempts to resolve. The main problem had to do with fcoe_rcv() running in a different context than the hotplug notifications. This opened the possiblity that fcoe_rcv() would target a Rx thread for a skb. However, that thread could become NULL if the CPU was made offline. This patch uses the Rx queue's (a skb_queue) lock to protect the thread it's associated with and we use the 'thread' member of the fcoe_percpu_s to determine if the thread is ready to accept new skbs. The patch also attempts to do a better job of cleaning up, both if hotplug registration fails as well as when the module is removed. Contribution provided by Joe Eykholt to fix incorrect use of __cpuinitdata. Signed-off-by: Yi Zou Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] fcoe: Use per-CPU kernel function for dev_stats instead of an array

2009-04-03T14:22:58Z

Remove the hotplug creation of dev_stats, we allocate for all possible CPUs now when we allocate the lport. v2: Durring the 2.6.30 merge window, before these patches were comitted, 'percpu_ptr' was renamed 'per_cpu_ptr'. This latest update updates this patch for the name change. Signed-off-by: Yi Zou Signed-off-by: Robert Love Signed-off-by: James Bottomley

[SCSI] fcoe: Use percpu kernel funcs for struct fcoe_percpu_s

2009-04-03T14:22:57Z

Convert fcoe_percpu array to use the per-cpu variables that the kernel provides. Use the kernel's functions to access this structure. The cpu member of the fcoe_percpu_s is no longer needed, so this patch removes it too. Signed-off-by: Yi Zou Signed-off-by: Robert Love Signed-off-by: James Bottomley