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net/ip: do not drop the udp packet from IP layer

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this change to support receive the udp data from the specified
port without obtaining the address.

e.g: disable the Bootstrap flag on dhcpc handshake

Reference:
RFC1542: Clarifications and Extensions for the Bootstrap Protocol.

Signed-off-by: chao.an <anchao@xiaomi.com>
This commit is contained in:
chao.an
2021-01-18 16:43:52 +08:00
committed by Brennan Ashton
parent 52b4c73a61
commit ab148bc69f
2 changed files with 23 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files
net/devif/ipv4_input.c
+10 -10
View File
@@ -237,16 +237,6 @@ int ipv4_input(FAR struct net_driver_s *dev)
}
else
#endif
#ifdef CONFIG_NET_ICMP
/* In other cases, the device must be assigned a non-zero IP address. */
if (net_ipv4addr_cmp(dev->d_ipaddr, INADDR_ANY))
{
nwarn("WARNING: No IP address assigned\n");
goto drop;
}
else
#endif
#if defined(CONFIG_NET_BROADCAST) && defined(NET_UDP_HAVE_STACK)
/* The address is not the broadcast address and we have been assigned a
* address. So there is also the possibility that the destination address
@@ -307,6 +297,7 @@ int ipv4_input(FAR struct net_driver_s *dev)
}
else
#endif
if (ipv4->proto != IP_PROTO_UDP)
{
/* Not destined for us and not forwardable... Drop the
* packet.
@@ -322,6 +313,15 @@ int ipv4_input(FAR struct net_driver_s *dev)
}
}
}
#ifdef CONFIG_NET_ICMP
/* In other cases, the device must be assigned a non-zero IP address. */
else if (net_ipv4addr_cmp(dev->d_ipaddr, INADDR_ANY))
{
nwarn("WARNING: No IP address assigned\n");
goto drop;
}
#endif
if (ipv4_chksum(dev) != 0xffff)
{
net/devif/ipv6_input.c
+13 -16
View File
@@ -409,22 +409,6 @@ int ipv6_input(FAR struct net_driver_s *dev)
* address by its IPv6 nexthdr field.
*/
}
/* In other cases, the device must be assigned a non-zero IP address
* (the all zero address is the "unspecified" address.
*/
else
#endif
#ifdef CONFIG_NET_ICMPv6
if (net_ipv6addr_cmp(dev->d_ipv6addr, g_ipv6_unspecaddr))
{
nwarn("WARNING: No IP address assigned\n");
goto drop;
}
/* Check if the packet is destined for out IP address */
else
#endif
{
@@ -449,6 +433,7 @@ int ipv6_input(FAR struct net_driver_s *dev)
}
else
#endif
if (nxthdr != IP_PROTO_UDP)
{
/* Not destined for us and not forwardable... drop the packet. */
@@ -457,6 +442,18 @@ int ipv6_input(FAR struct net_driver_s *dev)
}
}
}
#ifdef CONFIG_NET_ICMPv6
/* In other cases, the device must be assigned a non-zero IP address
* (the all zero address is the "unspecified" address.
*/
if (net_ipv6addr_cmp(dev->d_ipv6addr, g_ipv6_unspecaddr))
{
nwarn("WARNING: No IP address assigned\n");
goto drop;
}
#endif
/* Now process the incoming packet according to the protocol specified in
* the next header IPv6 field.