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Tsirkin" , Jason Wang , "David S. Miller" , Jakub Kicinski , Arseny Krasnov , Norbert Slusarek , Andra Paraschiv , Colin Ian King CC: , , , , Subject: [RFC PATCH v1 3/7] vhost/vsock: support MSG_EOR bit processing Date: Mon, 26 Jul 2021 19:33:38 +0300 Message-ID: <20210726163341.2589759-1-arseny.krasnov@kaspersky.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210726163137.2589102-1-arseny.krasnov@kaspersky.com> References: <20210726163137.2589102-1-arseny.krasnov@kaspersky.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.64.68.129] X-ClientProxiedBy: hqmailmbx3.avp.ru (10.64.67.243) To hqmailmbx3.avp.ru (10.64.67.243) X-KSE-ServerInfo: hqmailmbx3.avp.ru, 9 X-KSE-AntiSpam-Interceptor-Info: scan successful X-KSE-AntiSpam-Version: 5.9.20, Database issued on: 07/26/2021 16:13:33 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 0 X-KSE-AntiSpam-Info: Lua profiles 165254 [Jul 26 2021] X-KSE-AntiSpam-Info: Version: 5.9.20.0 X-KSE-AntiSpam-Info: Envelope from: arseny.krasnov@kaspersky.com X-KSE-AntiSpam-Info: LuaCore: 449 449 5db59deca4a4f5e6ea34a93b13bc730e229092f4 X-KSE-AntiSpam-Info: {Tracking_from_domain_doesnt_match_to} X-KSE-AntiSpam-Info: 127.0.0.199:7.1.2;arseniy-pc.avp.ru:7.1.1;kaspersky.com:7.1.1;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1 X-KSE-AntiSpam-Info: Rate: 0 X-KSE-AntiSpam-Info: Status: not_detected X-KSE-AntiSpam-Info: Method: none X-KSE-Antiphishing-Info: Clean X-KSE-Antiphishing-ScanningType: Deterministic X-KSE-Antiphishing-Method: None X-KSE-Antiphishing-Bases: 07/26/2021 16:15:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 26.07.2021 14:57:00 X-KSE-BulkMessagesFiltering-Scan-Result: InTheLimit X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-BulkMessagesFiltering-Scan-Result: InTheLimit X-KLMS-Rule-ID: 52 X-KLMS-Message-Action: clean X-KLMS-AntiSpam-Status: not scanned, disabled by settings X-KLMS-AntiSpam-Interceptor-Info: not scanned X-KLMS-AntiPhishing: Clean, bases: 2021/07/26 14:52:00 X-KLMS-AntiVirus: Kaspersky Security for Linux Mail Server, version 8.0.3.30, bases: 2021/07/26 14:01:00 #16958312 X-KLMS-AntiVirus-Status: Clean, skipped Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org It works in the same way as 'end-of-message' bit: if packet has 'EOM' bit, also check for 'EOR' bit. Signed-off-by: Arseny Krasnov --- drivers/vhost/vsock.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c index 3b55de70ac77..3e2b150f9c6f 100644 --- a/drivers/vhost/vsock.c +++ b/drivers/vhost/vsock.c @@ -115,6 +115,7 @@ vhost_transport_do_send_pkt(struct vhost_vsock *vsock, size_t iov_len, payload_len; int head; bool restore_msg_eom_flag = false; + bool restore_msg_eor_flag = false; spin_lock_bh(&vsock->send_pkt_list_lock); if (list_empty(&vsock->send_pkt_list)) { @@ -188,6 +189,11 @@ vhost_transport_do_send_pkt(struct vhost_vsock *vsock, if (le32_to_cpu(pkt->hdr.flags) & VIRTIO_VSOCK_SEQ_EOM) { pkt->hdr.flags &= ~cpu_to_le32(VIRTIO_VSOCK_SEQ_EOM); restore_msg_eom_flag = true; + + if (le32_to_cpu(pkt->hdr.flags & VIRTIO_VSOCK_SEQ_EOR)) { + pkt->hdr.flags &= ~cpu_to_le32(VIRTIO_VSOCK_SEQ_EOR); + restore_msg_eor_flag = true; + } } } @@ -224,9 +230,13 @@ vhost_transport_do_send_pkt(struct vhost_vsock *vsock, * to send it with the next available buffer. */ if (pkt->off < pkt->len) { - if (restore_msg_eom_flag) + if (restore_msg_eom_flag) { pkt->hdr.flags |= cpu_to_le32(VIRTIO_VSOCK_SEQ_EOM); + if (restore_msg_eor_flag) + pkt->hdr.flags |= cpu_to_le32(VIRTIO_VSOCK_SEQ_EOR); + } + /* We are queueing the same virtio_vsock_pkt to handle * the remaining bytes, and we want to deliver it * to monitoring devices in the next iteration. -- 2.25.1