license: add spdx identifier to all files

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ifddd07cc0eb5edeb2dcb410747073d68c6631cb1

transports: Resize socket send buffer if needed

This was originally added in openbmc/pldm to make the socket send buffer
big enough to send a message if the message is longer than the current
send b

transports: Resize socket send buffer if needed

This was originally added in openbmc/pldm to make the socket send buffer
big enough to send a message if the message is longer than the current
send buffer size.

When you call set_sock_opt with buffer size X, given that X is within a
certain range, the send buffer is actually set to 2*X. get_sock_opt
returns the 2*X value, not X. So add in some helper functions.

Change-Id: I8ded9357db4268cd264cf0ecfb80479223106c09
Signed-off-by: Rashmica Gupta <rashmica@linux.ibm.com>

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