linux/net/rds, branch v2.6.30.3

FRV: Fix the section attribute on UP DECLARE_PER_CPU()

2009-04-22T02:39:59Z

In non-SMP mode, the variable section attribute specified by DECLARE_PER_CPU() does not agree with that specified by DEFINE_PER_CPU(). This means that architectures that have a small data section references relative to a base register may throw up linkage errors due to too great a displacement between where the base register points and the per-CPU variable. On FRV, the .h declaration says that the variable is in the .sdata section, but the .c definition says it's actually in the .data section. The linker throws up the following errors: kernel/built-in.o: In function `release_task': kernel/exit.c:78: relocation truncated to fit: R_FRV_GPREL12 against symbol `per_cpu__process_counts' defined in .data section in kernel/built-in.o kernel/exit.c:78: relocation truncated to fit: R_FRV_GPREL12 against symbol `per_cpu__process_counts' defined in .data section in kernel/built-in.o To fix this, DECLARE_PER_CPU() should simply apply the same section attribute as does DEFINE_PER_CPU(). However, this is made slightly more complex by virtue of the fact that there are several variants on DEFINE, so these need to be matched by variants on DECLARE. Signed-off-by: David Howells Signed-off-by: Linus Torvalds

RDS: Use spinlock to protect 64b value update on 32b archs

2009-04-02T07:52:22Z

We have a 64bit value that needs to be set atomically. This is easy and quick on all 64bit archs, and can also be done on x86/32 with set_64bit() (uses cmpxchg8b). However other 32b archs don't have this. I actually changed this to the current state in preparation for mainline because the old way (using a spinlock on 32b) resulted in unsightly #ifdefs in the code. But obviously, being correct takes precedence. Signed-off-by: Andy Grover Signed-off-by: David S. Miller

RDS: Rewrite connection cleanup, fixing oops on rmmod

2009-04-02T07:52:22Z

This fixes a bug where a connection was unexpectedly not on *any* list while being destroyed. It also cleans up some code duplication and regularizes some function names. * Grab appropriate lock in conn_free() and explain in comment * Ensure via locking that a conn is never not on either a dev's list or the nodev list * Add rds_xx_remove_conn() to match rds_xx_add_conn() * Make rds_xx_add_conn() return void * Rename remove_{,nodev_}conns() to destroy_{,nodev_}conns() and unify their implementation in a helper function * Document lock ordering as nodev conn_lock before dev_conn_lock Reported-by: Yosef Etigin Signed-off-by: Andy Grover Signed-off-by: David S. Miller

RDS: Fix m_rs_lock deadlock

2009-04-02T07:52:21Z

rs_send_drop_to() is called during socket close. If it takes m_rs_lock without disabling interrupts, then rds_send_remove_from_sock() can run from the rx completion handler and thus deadlock. Signed-off-by: Andy Grover Signed-off-by: David S. Miller

rds: fix iband RDMA dependencies

2009-03-04T05:39:40Z

Fix RDS Infiniband dependencies for RDMA so that these build errors won't happen: ERROR: "rdma_accept" [net/rds/rds.ko] undefined! ERROR: "rdma_destroy_id" [net/rds/rds.ko] undefined! ERROR: "rdma_connect" [net/rds/rds.ko] undefined! ERROR: "rdma_destroy_qp" [net/rds/rds.ko] undefined! ERROR: "rdma_listen" [net/rds/rds.ko] undefined! ERROR: "rdma_notify" [net/rds/rds.ko] undefined! ERROR: "rdma_create_id" [net/rds/rds.ko] undefined! ERROR: "rdma_create_qp" [net/rds/rds.ko] undefined! ERROR: "rdma_bind_addr" [net/rds/rds.ko] undefined! ERROR: "rdma_resolve_route" [net/rds/rds.ko] undefined! ERROR: "rdma_disconnect" [net/rds/rds.ko] undefined! ERROR: "rdma_reject" [net/rds/rds.ko] undefined! ERROR: "rdma_resolve_addr" [net/rds/rds.ko] undefined! Signed-off-by: Randy Dunlap Acked-by: Andy Grover Signed-off-by: David S. Miller

rds: Fix build on powerpc.

2009-03-02T09:49:28Z

As reported by Stephen Rothwell. > Today's linux-next build (powerpc allyesconfig) failed like this: > > net/rds/cong.c: In function 'rds_cong_set_bit': > net/rds/cong.c:284: error: implicit declaration of function 'generic___set_le_bit' > net/rds/cong.c: In function 'rds_cong_clear_bit': > net/rds/cong.c:298: error: implicit declaration of function 'generic___clear_le_bit' > net/rds/cong.c: In function 'rds_cong_test_bit': > net/rds/cong.c:309: error: implicit declaration of function 'generic_test_le_bit' Signed-off-by: David S. Miller

RDS: Kconfig and Makefile

2009-02-27T07:43:35Z

Add RDS Kconfig and Makefile, and modify net/'s to add us to the build. Signed-off-by: Andy Grover Signed-off-by: David S. Miller

RDS: Common RDMA transport code

2009-02-27T07:39:33Z

Although most of IB and iWARP are separated from each other, there is some common code required to handle their shared CM listen port. This code listens for CM events and then dispatches the event to the appropriate transport, either IB or iWARP. Signed-off-by: Andy Grover Signed-off-by: David S. Miller

RDS: Add iWARP support

2009-02-27T07:39:33Z

Support for iWARP NICs is implemented as a separate RDS transport from IB. The code, however, is very similar to IB (it was forked, basically.) so let's keep it in one changeset. The reason for this duplicationis that despite its similarity to IB, there are a number of places where it has different semantics. iwarp zcopy support is still under development, and giving it its own sandbox ensures that IB code isn't disrupted while iwarp changes. Over time these transports will re-converge. Signed-off-by: Andy Grover Signed-off-by: David S. Miller

RDS/IB: Stats and sysctls

2009-02-27T07:39:32Z

IB-specific stats and sysctls. Signed-off-by: Andy Grover Signed-off-by: David S. Miller