kernel.git/drivers/infiniband/core/addr.c, branch linux-2.6.34.y

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30T13:02:32Z

percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo Guess-its-ok-by: Christoph Lameter Cc: Ingo Molnar Cc: Lee Schermerhorn

IB/addr: Fix IPv6 routing lookup

2009-11-20T00:46:25Z

Include link scope as part of address resolution. Combine local and remote address resolution into a single, simpler code path. Fix error checking in the IPv6 routing lookups. Based on work from: David Wilder Jason Gunthorpe Signed-off-by: Sean Hefty [ Fix up cma_check_linklocal() for !IPV6 case. - Roland ] Signed-off-by: Roland Dreier

IB/addr: Simplify resolving IPv4 addresses

2009-11-19T21:26:51Z

Merge resolve local/remote address resolution into a single data flow to ensure consistent access and use of the local routing tables. Based on work from: David Wilder Jason Gunthorpe Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

IB/addr: Store net_device type instead of translating to RDMA transport

2009-11-19T20:57:18Z

The struct rdma_dev_addr stores net_device address information: the source device address, destination hardware address, and broadcast address. For consistency, store the net_device type rather than converting it to the rdma_node_type. The type indicates the format of the various hardware addresses, which is what we're concerned with, and not the RDMA node type that the address may map to. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

IB/addr: Verify source and destination address families match

2009-11-19T20:55:22Z

If a source address is provided, verify that the address family matches that of the destination address. If the source is not specified, use the same address family as the destination. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

RDMA/cma: Replace net_device pointer with index

2009-11-19T20:55:22Z

Provide the device interface when resolving route information to ensure that the correct outbound device is used. This will also simplify processing of sin6_scope_id for IPv6 support. Based on work from: David Wilder Jason Gunthorpe Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

RDMA/addr: Use appropriate locking with for_each_netdev()

2009-11-18T22:24:34Z

for_each_netdev() should be used with RTNL or dev_base_lock held, or else we risk a crash. Signed-off-by: Eric Dumazet Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

RDMA/addr: Fix resolution of local IPv6 addresses

2009-10-07T23:03:18Z

This patch allows a local IPv6 address to be resolved by rdma_cm. To reproduce the problem: $ rping -s -v -a ::0 & $ rping -c -v -a rdma_resolve_addr error -1 Local IPv6 address was obtained with "ip addr show ib0" Addresses: https://bugs.openfabrics.org/show_bug.cgi?id=1759 Signed-off-by: David Wilder Acked-by: Sean Hefty Signed-off-by: Roland Dreier

RDMA: Add init/exit macros to addr.c and cma.c

2009-06-23T17:38:42Z

Add __init and __exit annotations to the module_init/module_exit functions from drivers/infiniband/core/addr.c and cma.c. Signed-off-by: Peter Huewe Acked-by: Sean Hefty Signed-off-by: Roland Dreier

RDMA/addr: Fix build breakage when IPv6 is disabled

2008-12-30T07:37:14Z

Commit 38617c64 ("RDMA/addr: Add support for translating IPv6 addresses") broke the build when CONFIG_IPV6=n, because the ib_addr module unconditionally attempted to call ipv6_chk_addr() and other IPv6 functions that are not defined when IPv6 is disabled. Fix this by only building IPv6 support if CONFIG_IPV6 is turned on, and add a Kconfig dependency to prevent the ib_addr code from being built in when IPv6 is built modular. Signed-off-by: Roland Dreier