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This commit is contained in:
Gregory Nutt 2017-09-19 17:07:02 -06:00
parent 450624c370
commit 2cd27e17a1
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27
netutils/netlib/netlib_ipv4adaptor.c
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@ -58,6 +58,33 @@
/****************************************************************************
* Name: netlib_ipv4adaptor
*
* Description:
* Given the destination address, destipaddr, return the IP address
* assigned to the network adaptor that connects the sub-net that
* includes destipaddr.
*
* NOTE: This does not account for any routing information that may
* appear in the routing table. A complete solution could involve three
* steps:
*
* 1. Call netlib_ipv4adaptor() to find the address of the network
* adaptor for the destination address.
* 2. If this fails, then look up the router address in the routing table
* that can forward to the destination address, then
* 3. Call netlib_ipv4adaptor() to find the address of the network
* adaptor for that router address.
*
* Input Parameters:
* destipaddr - The destination IPv4 address
* srcipaddr - The location to return that adaptor address that serves
* the sub-net that includes the destination address.
*
* Returned Value:
* Zero (OK) is returned on success with srcipaddr valid. A negated
* errno value is returned on any failure and in this case the srcipaddr
* is not valid.
*
****************************************************************************/
int netlib_ipv4adaptor(in_addr_t destipaddr, FAR in_addr_t *srcipaddr)

27
netutils/netlib/netlib_ipv6adaptor.c
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@ -58,6 +58,33 @@
/****************************************************************************
* Name: netlib_ipv6adaptor
*
* Description:
* Given the destination address, destipaddr, return the IP address
* assigned to the network adaptor that connects the sub-net that
* includes destipaddr.
*
* NOTE: This does not account for any routing information that may
* appear in the routing table. A complete solution could involve three
* steps:
*
* 1. Call netlib_ipv4adaptor() to find the address of the network
* adaptor for the destination address.
* 2. If this fails, then look up the router address in the routing table
* that can forward to the destination address, then
* 3. Call netlib_ipv4adaptor() to find the address of the network
* adaptor for that router address.
*
* Input Parameters:
* destipaddr - The destination IPv4 address
* srcipaddr - The location to return that adaptor address that serves
* the sub-net that includes the destination address.
*
* Returned Value:
* Zero (OK) is returned on success with srcipaddr valid. A negated
* errno value is returned on any failure and in this case the srcipaddr
* is not valid.
*
****************************************************************************/
int netlib_ipv6adaptor(FAR const struct in6_addr *destipaddr,