diff options
| author | Jon Paul Maloy <jon.maloy@ericsson.com> | 2015-06-28 09:44:44 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-06-28 16:43:02 -0700 |
| commit | 7d967b673c2ff992205be051ffebc39e1a323400 (patch) | |
| tree | d6edc29ed8d4d0d4314e7249486a48b4f2ae5267 /net/tipc/link.c | |
| parent | 011cb197a84ed547c2b6b12a86adbeec1be0fdaf (diff) | |
tipc: purge backlog queue counters when broadcast link is reset
In commit 1f66d161ab3d8b518903fa6c3f9c1f48d6919e74
("tipc: introduce starvation free send algorithm")
we introduced a counter per priority level for buffers
in the link backlog queue. We also introduced a new
function tipc_link_purge_backlog(), to reset these
counters to zero when the link is reset.
Unfortunately, we missed to call this function when
the broadcast link is reset, with the result that the
values of these counters might be permanently skewed
when new nodes are attached. This may in the worst case
lead to permananent, but spurious, broadcast link
congestion, where no broadcast packets can be sent at
all.
We fix this bug with this commit.
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/link.c')
| -rw-r--r-- | net/tipc/link.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/tipc/link.c b/net/tipc/link.c index ca8b8e0f49b5..eaa9fe54b4ae 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -404,7 +404,7 @@ void tipc_link_reset_fragments(struct tipc_link *l_ptr) l_ptr->reasm_buf = NULL; } -static void tipc_link_purge_backlog(struct tipc_link *l) +void tipc_link_purge_backlog(struct tipc_link *l) { __skb_queue_purge(&l->backlogq); l->backlog[TIPC_LOW_IMPORTANCE].len = 0; |