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| author | Erik Hugne <erik.hugne@ericsson.com> | 2013-11-06 09:28:05 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-11-07 18:30:11 -0500 |
| commit | 528f6f4bf372511ebf6004eed822de8f749b5930 (patch) | |
| tree | 3db1786d51ec6f55d468f1a0e9028b61119ee4ba /net/tipc | |
| parent | b0db7b0c21a014d01be1018db68e78ebf7d4f0d7 (diff) | |
| download | blackbird-op-linux-528f6f4bf372511ebf6004eed822de8f749b5930.tar.gz blackbird-op-linux-528f6f4bf372511ebf6004eed822de8f749b5930.zip | |
tipc: don't reroute message fragments
When a message fragment is received in a broadcast or unicast link,
the reception code will append the fragment payload to a big reassembly
buffer through a call to the function tipc_recv_fragm(). However, after
the return of that call, the logics goes on and passes the fragment
buffer to the function tipc_net_route_msg(), which will simply drop it.
This behavior is a remnant from the now obsolete multi-cluster
functionality, and has no relevance in the current code base.
Although currently harmless, this unnecessary call would be fatal
after applying the next patch in this series, which introduces
a completely new reassembly algorithm. So we change the code to
eliminate the redundant call.
Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc')
| -rw-r--r-- | net/tipc/bcast.c | 6 | ||||
| -rw-r--r-- | net/tipc/link.c | 3 |
2 files changed, 6 insertions, 3 deletions
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c index 716de1ac6cb5..766a6eb4a88f 100644 --- a/net/tipc/bcast.c +++ b/net/tipc/bcast.c @@ -487,11 +487,13 @@ receive: spin_lock_bh(&bc_lock); bclink_accept_pkt(node, seqno); bcl->stats.recv_fragments++; - if (ret > 0) + if (ret > 0) { bcl->stats.recv_fragmented++; + spin_unlock_bh(&bc_lock); + goto receive; + } spin_unlock_bh(&bc_lock); tipc_node_unlock(node); - tipc_net_route_msg(buf); } else if (msg_user(msg) == NAME_DISTRIBUTOR) { spin_lock_bh(&bc_lock); bclink_accept_pkt(node, seqno); diff --git a/net/tipc/link.c b/net/tipc/link.c index 54163f91b8ae..ada8cadf5af8 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -1657,7 +1657,8 @@ deliver: } if (ret == -1) l_ptr->next_in_no--; - break; + tipc_node_unlock(n_ptr); + continue; case CHANGEOVER_PROTOCOL: type = msg_type(msg); if (link_recv_changeover_msg(&l_ptr, &buf)) { |
