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rxrpc: Extract the peer address from an incoming packet earlier

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Extract the peer address from an incoming packet earlier, at the beginning
of rxrpc_input_packet() and thence pass a pointer to it to various
functions that use it as part of the lookup rather than doing it on several
separate paths.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
This commit is contained in:
David Howells
2022-10-20 22:36:20 +01:00
parent cd21effb05
commit 393a2a2007
4 changed files with 31 additions and 27 deletions
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10
net/rxrpc/call_accept.c
View File

@@ -258,6 +258,7 @@ static struct rxrpc_call *rxrpc_alloc_incoming_call(struct rxrpc_sock *rx,
struct rxrpc_peer *peer,
struct rxrpc_connection *conn,
const struct rxrpc_security *sec,
struct sockaddr_rxrpc *peer_srx,
struct sk_buff *skb)
{
struct rxrpc_backlog *b = rx->backlog;
@@ -287,8 +288,7 @@ static struct rxrpc_call *rxrpc_alloc_incoming_call(struct rxrpc_sock *rx,
peer = NULL;
if (!peer) {
peer = b->peer_backlog[peer_tail];
if (rxrpc_extract_addr_from_skb(&peer->srx, skb) < 0)
return NULL;
peer->srx = *peer_srx;
b->peer_backlog[peer_tail] = NULL;
smp_store_release(&b->peer_backlog_tail,
(peer_tail + 1) &
@@ -346,6 +346,7 @@ static struct rxrpc_call *rxrpc_alloc_incoming_call(struct rxrpc_sock *rx,
*/
struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *local,
struct rxrpc_sock *rx,
struct sockaddr_rxrpc *peer_srx,
struct sk_buff *skb)
{
struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
@@ -371,7 +372,7 @@ struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *local,
* we have to recheck the routing. However, we're now holding
* rx->incoming_lock, so the values should remain stable.
*/
conn = rxrpc_find_connection_rcu(local, skb, &peer);
conn = rxrpc_find_connection_rcu(local, peer_srx, skb, &peer);
if (!conn) {
sec = rxrpc_get_incoming_security(rx, skb);
@@ -379,7 +380,8 @@ struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *local,
goto no_call;
}
call = rxrpc_alloc_incoming_call(rx, local, peer, conn, sec, skb);
call = rxrpc_alloc_incoming_call(rx, local, peer, conn, sec, peer_srx,
skb);
if (!call) {
skb->mark = RXRPC_SKB_MARK_REJECT_BUSY;
goto no_call;