santosh.shilimkar@oracle.com e47db94e10 RDS: Fix the atomicity for congestion map update ...

Two different threads with different rds sockets may be in
rds_recv_rcvbuf_delta() via receive path. If their ports
both map to the same word in the congestion map, then
using non-atomic ops to update it could cause the map to
be incorrect. Lets use atomics to avoid such an issue.

Full credit to Wengang <wen.gang.wang@oracle.com> for
finding the issue, analysing it and also pointing out
to offending code with spin lock based fix.

Reviewed-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2016-04-16 19:01:05 -04:00

..

af_rds.c

…

bind.c

…

cong.c

RDS: Fix the atomicity for congestion map update

2016-04-16 19:01:05 -04:00

connection.c

…

ib_cm.c

RDS: fix endianness for dp_ack_seq

2016-04-16 19:01:05 -04:00

ib_fmr.c

RDS: IB: move FMR code to its own file

2016-03-02 14:13:18 -05:00

ib_frmr.c

RDS: IB: Support Fastreg MR (FRMR) memory registration mode

2016-03-02 14:13:19 -05:00

ib_mr.h

RDS: IB: Support Fastreg MR (FRMR) memory registration mode

2016-03-02 14:13:19 -05:00

ib_rdma.c

RDS: IB: Support Fastreg MR (FRMR) memory registration mode

2016-03-02 14:13:19 -05:00

ib_recv.c

RDS: fix congestion map corruption for PAGE_SIZE > 4k

2016-04-07 16:58:28 -04:00

ib_ring.c

…

ib_send.c

RDS: IB: Remove the RDS_IB_SEND_OP dependency

2016-03-02 14:13:17 -05:00

ib_stats.c

RDS: IB: add mr reused stats

2016-03-02 14:13:19 -05:00

ib_sysctl.c

…

ib.c

RDS: IB: add Fastreg MR (FRMR) detection support

2016-03-02 14:13:19 -05:00

ib.h

RDS: IB: Support Fastreg MR (FRMR) memory registration mode

2016-03-02 14:13:19 -05:00

info.c

…

info.h

…

Kconfig

…

loop.c

…

loop.h

…

Makefile

RDS: IB: Support Fastreg MR (FRMR) memory registration mode

2016-03-02 14:13:19 -05:00

message.c

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page.c

RDS: memory allocated must be align to 8

2016-04-07 16:58:27 -04:00

rdma_transport.c

RDS: IB: handle the RDMA CM time wait event

2016-03-02 14:13:19 -05:00

rdma_transport.h

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rdma.c

…

rds.h

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recv.c

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send.c

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stats.c

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sysctl.c

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tcp_connect.c

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tcp_listen.c

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tcp_recv.c

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tcp_send.c

…

tcp_stats.c

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tcp.c

RDS: TCP: Remove unused constant

2016-03-18 22:25:41 -04:00

tcp.h

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threads.c

…

transport.c

…