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net/inet: Add framework to support IPv4 and IPv6 protocol socket options (i.e., SOL_IP and SOL_IP6). This is build framework only (not actual socket options are yet handled). Handling of these socket options is a necessary step on the way to future ICMPv6 MLD support.

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This commit is contained in:
Gregory Nutt
2018-10-31 15:59:05 -06:00
parent 6d93658ff8
commit 0330743a9d
10 changed files with 316 additions and 34 deletions
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include/netinet/in.h
+1 -1
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@@ -114,7 +114,7 @@
#define IP_MSFILTER (__SO_PROTOCOL + 10) /* Access advanced, full-
* state filtering API */
#define IP_MULTICAST_ALL (__SO_PROTOCOL + 11) /* Modify the delivery policy
* of mutlicast messages bound
* of multicast messages bound
* to INADDR_ANY */
/* SOL_IPV6 protocol-level socket options. */
include/nuttx/net/igmp.h
+2 -4
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@@ -64,10 +64,6 @@
* Pre-processor Definitions
****************************************************************************/
#ifdef CONFIG_NET_IPv6
# error "IGMP for IPv6 not supported"
#endif
/* IGMP packet types */
#define IGMP_MEMBERSHIP_QUERY 0x11 /* Membership Query */
@@ -111,6 +107,8 @@
#define IS_SCHEDMSG(f) (((f) & IGMP_SCHEDMSG) != 0)
#define IS_WAITMSG(f) (((f) & IGMP_WAITMSG) != 0)
/* Time-to-Live must be one */
#define IGMP_TTL 1
/****************************************************************************
include/nuttx/net/mld.h
+15
View File
@@ -59,6 +59,21 @@
* Pre-processor Definitions
****************************************************************************/
/* MLD is a sub-protocol of ICMPv6, that is, MLD message types are a subset
* of ICMPv6 messages, and MLD messages are identified in IPv6 packets by a
* preceding Next Header value of IP_PROTO_ICMP6 (58). All MLD messages
* MUST be sent with a link-local IPv6 Source Address, an IPv6 Hop Limit of
* 1, and an IPv6 Router Alert option (RFC2711) in a Hop-by-Hop Options
* header. (The Router Alert option is necessary to cause routers to
* examine MLD messages sent to IPv6 multicast addresses in which the
* routers themselves have no interest.) MLD Reports can be sent with the
* source address set to the unspecified address (RFC3513), if a valid
* link-local IPv6 source address has not been acquired yet for the sending
* interface.
*/
#define MLD_TTL (1)
/* Maximum response code bit definitions.
*
* If MRC < 32768