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| author | David Dillow <dillowda@ornl.gov> | 2011-01-16 21:57:10 +0300 |
|---|---|---|
| committer | David Dillow <dillowda@ornl.gov> | 2011-03-16 02:37:23 +0300 |
| commit | c07d424d6118d528ef71b22b7424bfc359c307a5 (patch) | |
| tree | 1d61da8aea0fa80c2c7bc13b03d15ddb470bcfa6 /net/lapb/lapb_timer.c | |
| parent | 8f26c9ff9cd0317ad867bce972f69e0c6c2cbe3c (diff) | |
| download | linux-c07d424d6118d528ef71b22b7424bfc359c307a5.tar.xz | |
IB/srp: add support for indirect tables that don't fit in SRP_CMD
This allows us to guarantee the ability to submit up to 8 MB requests
based on the current value of SCSI_MAX_SG_CHAIN_SEGMENTS. While FMR will
usually condense the requests into 8 SG entries, it is imperative that
the target support external tables in case the FMR mapping fails or is
not supported.
We add a safety valve to allow targets without the needed support to
reap the benefits of the large tables, but fail in a manner that lets
the user know that the data didn't make it to the device. The user must
add "allow_ext_sg=1" to the target parameters to indicate that the
target has the needed support.
If indirect_sg_entries is not specified in the modules options, then
the sg_tablesize for the target will default to cmd_sg_entries unless
overridden by the target options.
Signed-off-by: David Dillow <dillowda@ornl.gov>
Diffstat (limited to 'net/lapb/lapb_timer.c')
0 files changed, 0 insertions, 0 deletions