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 EAD3F1DA60D; Thu, 30 Jul 2026 01:01:42 +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=1785373304; cv=none; b=juVnYsDLsyt5SgSmocKALwkCuZsxaC+DD5lIMSgOnbGqUwC1bhyU21JwC1TpiNtuMeb4VBnATAUOSdMBSYU+gCSjHeRF/jBqNtiqJVGiwkjk4lYS3k1qXRdGx6jHJwPh6mLWO9IC4pTWop9jd5B6vzlYbIs3L7xuq/XZxVbxWU4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785373304; c=relaxed/simple; bh=gRGXzSakZiJaXj7Qpdv/+QdbrYel7A8TRVi8NA5CjvA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=V5kYLCwpkHmAYUbIVVU/Z1ABvDN/7Cg+LAr5BGjH/JSE2XBhd1jlU8AQRD94af8WDUs9TkAF/B/mipN3Nf2v8/ulrfeb8xVNY3u94PrKZ/ErgUUe4MUyQ3BVCHSuzwWALvSFzC8qN8Me9WH8+9xQlcL04dJFB+xXZ4Vu01YkHwc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hhQYvnV7; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="hhQYvnV7" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 909681F00A3A; Thu, 30 Jul 2026 01:01:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785373302; bh=6LIaTLd4GrJ9A0RDu/tU48tl9MVB4sXzgCjiDvwOeRM=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=hhQYvnV709x3Wh+Z4dStafefiy8obi3fYC8EuuG3SeYXV+K+8+6cUW7cKeBcytgyf jiLKU0BlRPGZUVI/+31+y+7q8WMjP8tZCOXAYyFaYdyYiDki16lN0sw2qS65a0j4H4 Dhm1HcZv9fT0q6L1rR5s86qJroM97dAN4hljM3BQUfK6UOm/qsjrCu7aDVNt3xM+Bi zFpq6skLqLmfCU4OUulISb8Eh9Gmdwcz7qbtaYvnILmO20hLmOHlIf0qTGKpBxmt9b IKAIc9ddd/UI9qdoFLANRnAHUyBO7frhagAaDNgTYYLcoY4o+H+YQhZDR8Pj6LOWfT 4xhtDUa/P2XDA== From: Sasha Levin To: stable@vger.kernel.org Cc: 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.y 4/8] rxrpc: Allow the app to store private data on peer structs Date: Wed, 29 Jul 2026 21:01:33 -0400 Message-ID: <20260730010137.1700032-4-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260730010137.1700032-1-sashal@kernel.org> References: <2026072131-schilling-spectrum-ef97@gregkh> <20260730010137.1700032-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 --- include/net/af_rxrpc.h | 2 ++ net/rxrpc/ar-internal.h | 1 + net/rxrpc/peer_object.c | 26 ++++++++++++++++++++++++++ 3 files changed, 29 insertions(+) diff --git a/include/net/af_rxrpc.h b/include/net/af_rxrpc.h index 0754c463224a43..cf793d18e5df51 100644 --- a/include/net/af_rxrpc.h +++ b/include/net/af_rxrpc.h @@ -69,6 +69,8 @@ struct rxrpc_peer *rxrpc_kernel_get_peer(struct rxrpc_peer *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 *, rxrpc_notify_rx_t, rxrpc_user_attach_call_t, unsigned long, gfp_t, diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h index 61dd1298124f62..346fb8fa2cafcd 100644 --- a/net/rxrpc/ar-internal.h +++ b/net/rxrpc/ar-internal.h @@ -334,6 +334,7 @@ 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 */ diff --git a/net/rxrpc/peer_object.c b/net/rxrpc/peer_object.c index 956fc7ea4b7346..5664469fdd0c77 100644 --- a/net/rxrpc/peer_object.c +++ b/net/rxrpc/peer_object.c @@ -509,3 +509,29 @@ const struct sockaddr *rxrpc_kernel_remote_addr(const struct rxrpc_peer *peer) (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); -- 2.53.0