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net: bootp: Add environment variable for timeout period

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There is currently one config option (CONFIG_NET_RETRY_COUNT) that
is available to tune the retries of the network stack.
Unfortunately, it is global to all protocols, and the value is
interpreted differently in all of them.

Add a new environment variable that directly sets the retry period for
BOOTP timeouts. If this new value is not set, the period is still derived
from the default number of retries, or from CONFIG_NET_RETRY_COUNT if
defined. When both the new variable is set and CONFIG_NET_RETRY_COUNT
is defined, the variable has precedence.

Signed-off-by: Alexandre Messier <amessier@tycoint.com>
This commit is contained in:
Alexandre Messier
2016-02-01 17:08:57 -05:00
committed by Joe Hershberger
parent 903d384d40
commit 50768f5b06
2 changed files with 16 additions and 1 deletions
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@ -5409,6 +5409,12 @@ List of environment variables (most likely not complete):
Ethernet is encapsulated/received over 802.1q
VLAN tagged frames.
bootpretryperiod - Period during which BOOTP/DHCP sends retries.
Unsigned value, in milliseconds. If not set, the period will
be either the default (28000), or a value based on
CONFIG_NET_RETRY_COUNT, if defined. This value has
precedence over the valu based on CONFIG_NET_RETRY_COUNT.
The following image location variables contain the location of images
used in booting. The "Image" column gives the role of the image and is
not an environment variable name. The other columns are environment