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Add iscsi_set_tcp_syncnt function

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This patch adds support for setting TCP_SYNCNT to overwrite
the system default values. This allows indirect support
for a configurable connect timeout.

Linux uses a exponential backoff for SYN retries starting
with 1 second.

This means for a value n for TCP_SYNCNT, the connect will
effectively timeout after 2^(n+1)-1 seconds.
This commit is contained in:
Peter Lieven
2012-10-20 18:43:48 +02:00
parent d1110b7515
commit 78a31ad4a1
6 changed files with 52 additions and 4 deletions
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lib/libiscsi.def
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@@ -76,6 +76,7 @@ iscsi_set_tcp_user_timeout
iscsi_set_tcp_keepidle
iscsi_set_tcp_keepcnt
iscsi_set_tcp_keepintvl
iscsi_set_tcp_syncnt
iscsi_startstopunit_sync
iscsi_startstopunit_task
iscsi_synchronizecache10_sync