From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AF1183769FD; Thu, 30 Jul 2026 15:54:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785426885; cv=none; b=ioJ+uV7w9EyqQrJmoNNLXA5k4Y7XuMbt6vSulCJRgSjZMvSPHxPtvBTw/qzlkjQAa64n01INHkXL1HzCYigyzjKoFz4dpbPVTBEtQUDNFAS9mBsFG3WWUNP20YlSLBu0OoS+JXfLIf9dB5niSy5qBOrh/kfIrAjHx31L2TTg0wQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785426885; c=relaxed/simple; bh=PTvp98j15J8qHCd2eqB3N77yodiJfqf8BMbkxL9I35k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tu0NWmgCZ1+4u/wVapd9V9+BDofxeyYh645lvNAnM8Ygye0zI/5WHv1bGRGumUhs+k2QekhHT7l1ZhsaNKXlz8p3sJbGO8tw8BrfjDdRX6okmRcvzICx905SMRrFQGUtsIeMPB3QEMxrFPd+Ar2TDdWUpqLTOWiQP9WnvbBrm/g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=OMxaoosd; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="OMxaoosd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 070291F000E9; Thu, 30 Jul 2026 15:54:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1785426884; bh=twAoLBAbk1Y4bfgS6N6MRDN4d6Pgh1JjSPXJ0vhVq9o=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=OMxaoosdMhgxAHB4N9CUPLlq3uNFvi/AG306HLaaRpQlSEkrkOq/DMhcmEjl/mHya Bp18Jljstwq3Uc+GyeZwQeKaVHMWu49SZgrkvPWbirLFlSwfcVKYo/ZZZokgQ7Ka3k oavoMDjMRuk1W11zho8T+PQnx2TluM+qhupJLpo0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, David Howells , Marc Dionne , Jakub Kicinski , "David S. Miller" , Eric Dumazet , Paolo Abeni , Simon Horman , linux-afs@lists.infradead.org, linux-fsdevel@vger.kernel.org, netdev@vger.kernel.org, Sasha Levin Subject: [PATCH 6.12 577/602] rxrpc: Allow the app to store private data on peer structs Date: Thu, 30 Jul 2026 16:16:09 +0200 Message-ID: <20260730141448.176636193@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260730141435.976815864@linuxfoundation.org> References: <20260730141435.976815864@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Howells [ Upstream commit f3a123b25429dc03508e3bf598373005220b7203 ] Provide a way for the application (e.g. the afs filesystem) to store private data on the rxrpc_peer structs for later retrieval via the call object. This will allow afs to store a pointer to the afs_server object on the rxrpc_peer struct, thereby obviating the need for afs to keep lookup tables by which it can associate an incoming call with server that transmitted it. Signed-off-by: David Howells cc: Marc Dionne cc: Jakub Kicinski cc: "David S. Miller" cc: Eric Dumazet cc: Paolo Abeni cc: Simon Horman cc: linux-afs@lists.infradead.org cc: linux-fsdevel@vger.kernel.org cc: netdev@vger.kernel.org Link: https://lore.kernel.org/r/20250224234154.2014840-13-dhowells@redhat.com/ # v1 Link: https://lore.kernel.org/r/20250310094206.801057-9-dhowells@redhat.com/ # v4 Stable-dep-of: 330e2c514823 ("afs: Fix dynamic lookup to fail on cell lookup failure") Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- include/net/af_rxrpc.h | 2 ++ net/rxrpc/ar-internal.h | 1 + net/rxrpc/peer_object.c | 26 ++++++++++++++++++++++++++ 3 files changed, 29 insertions(+) --- a/include/net/af_rxrpc.h +++ b/include/net/af_rxrpc.h @@ -74,6 +74,8 @@ struct rxrpc_peer *rxrpc_kernel_get_peer struct rxrpc_peer *rxrpc_kernel_get_call_peer(struct socket *sock, struct rxrpc_call *call); const struct sockaddr_rxrpc *rxrpc_kernel_remote_srx(const struct rxrpc_peer *peer); const struct sockaddr *rxrpc_kernel_remote_addr(const struct rxrpc_peer *peer); +unsigned long rxrpc_kernel_set_peer_data(struct rxrpc_peer *peer, unsigned long app_data); +unsigned long rxrpc_kernel_get_peer_data(const struct rxrpc_peer *peer); unsigned int rxrpc_kernel_get_srtt(const struct rxrpc_peer *); int rxrpc_kernel_charge_accept(struct socket *sock, rxrpc_notify_rx_t notify_rx, unsigned long user_call_ID, gfp_t gfp, --- a/net/rxrpc/ar-internal.h +++ b/net/rxrpc/ar-internal.h @@ -333,6 +333,7 @@ struct rxrpc_peer { struct hlist_head error_targets; /* targets for net error distribution */ struct rb_root service_conns; /* Service connections */ struct list_head keepalive_link; /* Link in net->peer_keepalive[] */ + unsigned long app_data; /* Application data (e.g. afs_server) */ unsigned int last_tx_at; /* Last time packet sent here (time64_t LSW) */ seqlock_t service_conn_lock; spinlock_t lock; /* access lock */ --- a/net/rxrpc/peer_object.c +++ b/net/rxrpc/peer_object.c @@ -510,3 +510,29 @@ const struct sockaddr *rxrpc_kernel_remo (peer ? &peer->srx.transport : &rxrpc_null_addr.transport); } EXPORT_SYMBOL(rxrpc_kernel_remote_addr); + +/** + * rxrpc_kernel_set_peer_data - Set app-specific data on a peer. + * @peer: The peer to alter + * @app_data: The data to set + * + * Set the app-specific data on a peer. AF_RXRPC makes no effort to retain + * anything the data might refer to. The previous app_data is returned. + */ +unsigned long rxrpc_kernel_set_peer_data(struct rxrpc_peer *peer, unsigned long app_data) +{ + return xchg(&peer->app_data, app_data); +} +EXPORT_SYMBOL(rxrpc_kernel_set_peer_data); + +/** + * rxrpc_kernel_get_peer_data - Get app-specific data from a peer. + * @peer: The peer to query + * + * Retrieve the app-specific data from a peer. + */ +unsigned long rxrpc_kernel_get_peer_data(const struct rxrpc_peer *peer) +{ + return peer->app_data; +} +EXPORT_SYMBOL(rxrpc_kernel_get_peer_data);