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rxrpc: Drop channel number field from rxrpc_call struct

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Drop the channel number (channel) field from the rxrpc_call struct to
reduce the size of the call struct.  The field is redundant: if the call is
attached to a connection, the channel can be obtained from there by AND'ing
with RXRPC_CHANNELMASK.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells
2016-08-23 15:27:24 +01:00
parent f36b5e444c
commit 01a90a4598
5 changed files with 8 additions and 10 deletions
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7
net/rxrpc/call_object.c
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@@ -317,7 +317,6 @@ struct rxrpc_call *rxrpc_incoming_call(struct rxrpc_sock *rx,
candidate->conn = conn;
candidate->cid = sp->hdr.cid;
candidate->call_id = sp->hdr.callNumber;
candidate->channel = chan;
candidate->rx_data_post = 0;
candidate->state = RXRPC_CALL_SERVER_ACCEPTING;
candidate->flags |= (1 << RXRPC_CALL_IS_SERVICE);
@@ -330,7 +329,7 @@ struct rxrpc_call *rxrpc_incoming_call(struct rxrpc_sock *rx,
call = rcu_dereference_protected(conn->channels[chan].call,
lockdep_is_held(&conn->channel_lock));
_debug("channel[%u] is %p", candidate->channel, call);
_debug("channel[%u] is %p", candidate->cid & RXRPC_CHANNELMASK, call);
if (call && call->call_id == sp->hdr.callNumber) {
/* already set; must've been a duplicate packet */
_debug("extant call [%d]", call->state);
@@ -677,8 +676,8 @@ static void rxrpc_destroy_call(struct work_struct *work)
struct rxrpc_call *call =
container_of(work, struct rxrpc_call, destroyer);
_enter("%p{%d,%d,%p}",
call, atomic_read(&call->usage), call->channel, call->conn);
_enter("%p{%d,%x,%p}",
call, atomic_read(&call->usage), call->cid, call->conn);
ASSERTCMP(call->state, ==, RXRPC_CALL_DEAD);