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IB/core: Support new type of join-state for multicast 

There are four types for MCG, FullMember, NonMember, SendOnlyNonMember,
and the new added type: SendOnlyFullMember.
Add support for the new SendOnlyFullMember join state.

The new type allows host to send join request as sendonly, it will cause the
group to be created but without getting packets from this multicast back to the
host.

Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Erez Shitrit 2016-05-25 22:02:06 +03:00 committed by Doug Ledford
parent 628e6f7515
commit cd6e9b7ef9
1 changed files with 18 additions and 5 deletions
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23
drivers/infiniband/core/multicast.c
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@ -93,6 +93,18 @@ enum {
struct mcast_member;
/*
* There are 4 types of join states:
* FullMember, NonMember, SendOnlyNonMember, SendOnlyFullMember.
*/
enum {
FULLMEMBER_JOIN,
NONMEMBER_JOIN,
SENDONLY_NONMEBER_JOIN,
SENDONLY_FULLMEMBER_JOIN,
NUM_JOIN_MEMBERSHIP_TYPES,
};
struct mcast_group {
struct ib_sa_mcmember_rec rec;
struct rb_node node;
@ -102,7 +114,7 @@ struct mcast_group {
struct list_head pending_list;
struct list_head active_list;
struct mcast_member *last_join;
int members[3];
int members[NUM_JOIN_MEMBERSHIP_TYPES];
atomic_t refcount;
enum mcast_group_state state;
struct ib_sa_query *query;
@ -220,8 +232,9 @@ static void queue_join(struct mcast_member *member)
}
/*
* A multicast group has three types of members: full member, non member, and
* send only member. We need to keep track of the number of members of each
* A multicast group has four types of members: full member, non member,
* sendonly non member and sendonly full member.
* We need to keep track of the number of members of each
* type based on their join state. Adjust the number of members the belong to
* the specified join states.
*/
@ -229,7 +242,7 @@ static void adjust_membership(struct mcast_group *group, u8 join_state, int inc)
{
int i;
for (i = 0; i < 3; i++, join_state >>= 1)
for (i = 0; i < NUM_JOIN_MEMBERSHIP_TYPES; i++, join_state >>= 1)
if (join_state & 0x1)
group->members[i] += inc;
}
@ -245,7 +258,7 @@ static u8 get_leave_state(struct mcast_group *group)
u8 leave_state = 0;
int i;
for (i = 0; i < 3; i++)
for (i = 0; i < NUM_JOIN_MEMBERSHIP_TYPES; i++)
if (!group->members[i])
leave_state |= (0x1 << i);