mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-12 09:16:46 +07:00
56245cae19
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
#ifndef __LINUX_PIM_H
|
|
#define __LINUX_PIM_H
|
|
|
|
#include <linux/skbuff.h>
|
|
#include <asm/byteorder.h>
|
|
|
|
/* Message types - V1 */
|
|
#define PIM_V1_VERSION cpu_to_be32(0x10000000)
|
|
#define PIM_V1_REGISTER 1
|
|
|
|
/* Message types - V2 */
|
|
#define PIM_VERSION 2
|
|
|
|
/* RFC7761, sec 4.9:
|
|
* Type
|
|
* Types for specific PIM messages. PIM Types are:
|
|
*
|
|
* Message Type Destination
|
|
* ---------------------------------------------------------------------
|
|
* 0 = Hello Multicast to ALL-PIM-ROUTERS
|
|
* 1 = Register Unicast to RP
|
|
* 2 = Register-Stop Unicast to source of Register
|
|
* packet
|
|
* 3 = Join/Prune Multicast to ALL-PIM-ROUTERS
|
|
* 4 = Bootstrap Multicast to ALL-PIM-ROUTERS
|
|
* 5 = Assert Multicast to ALL-PIM-ROUTERS
|
|
* 6 = Graft (used in PIM-DM only) Unicast to RPF'(S)
|
|
* 7 = Graft-Ack (used in PIM-DM only) Unicast to source of Graft
|
|
* packet
|
|
* 8 = Candidate-RP-Advertisement Unicast to Domain's BSR
|
|
*/
|
|
enum {
|
|
PIM_TYPE_HELLO,
|
|
PIM_TYPE_REGISTER,
|
|
PIM_TYPE_REGISTER_STOP,
|
|
PIM_TYPE_JOIN_PRUNE,
|
|
PIM_TYPE_BOOTSTRAP,
|
|
PIM_TYPE_ASSERT,
|
|
PIM_TYPE_GRAFT,
|
|
PIM_TYPE_GRAFT_ACK,
|
|
PIM_TYPE_CANDIDATE_RP_ADV
|
|
};
|
|
|
|
#define PIM_NULL_REGISTER cpu_to_be32(0x40000000)
|
|
|
|
/* RFC7761, sec 4.9:
|
|
* The PIM header common to all PIM messages is:
|
|
* 0 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* |PIM Ver| Type | Reserved | Checksum |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*/
|
|
struct pimhdr {
|
|
__u8 type;
|
|
__u8 reserved;
|
|
__be16 csum;
|
|
};
|
|
|
|
/* PIMv2 register message header layout (ietf-draft-idmr-pimvsm-v2-00.ps */
|
|
struct pimreghdr {
|
|
__u8 type;
|
|
__u8 reserved;
|
|
__be16 csum;
|
|
__be32 flags;
|
|
};
|
|
|
|
int pim_rcv_v1(struct sk_buff *skb);
|
|
|
|
static inline bool ipmr_pimsm_enabled(void)
|
|
{
|
|
return IS_BUILTIN(CONFIG_IP_PIMSM_V1) || IS_BUILTIN(CONFIG_IP_PIMSM_V2);
|
|
}
|
|
|
|
static inline struct pimhdr *pim_hdr(const struct sk_buff *skb)
|
|
{
|
|
return (struct pimhdr *)skb_transport_header(skb);
|
|
}
|
|
|
|
static inline u8 pim_hdr_version(const struct pimhdr *pimhdr)
|
|
{
|
|
return pimhdr->type >> 4;
|
|
}
|
|
|
|
static inline u8 pim_hdr_type(const struct pimhdr *pimhdr)
|
|
{
|
|
return pimhdr->type & 0xf;
|
|
}
|
|
|
|
/* check if the address is 224.0.0.13, RFC7761 sec 4.3.1 */
|
|
static inline bool pim_ipv4_all_pim_routers(__be32 addr)
|
|
{
|
|
return addr == htonl(0xE000000D);
|
|
}
|
|
#endif
|