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Linville" , Ferruh Yigit , =?UTF-8?q?Mattias=20R=C3=B6nnblom?= , Subject: [PATCH v3] net/af_packet: cache align Rx/Tx structs Date: Fri, 26 Apr 2024 11:05:02 +0200 Message-ID: <20240426090502.100487-1-mattias.ronnblom@ericsson.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240426073824.100386-1-mattias.ronnblom@ericsson.com> References: <20240426073824.100386-1-mattias.ronnblom@ericsson.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AMS0EPF000001AB:EE_|DU0PR07MB9242:EE_ X-MS-Office365-Filtering-Correlation-Id: 299acc7e-44d9-4f1c-3088-08dc65d168cb X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230031|376005|82310400014|1800799015|36860700004; X-Microsoft-Antispam-Message-Info: =?utf-8?B?TVVyaWZxU2gwaG1MWlZOeXQ5eGgzZ2daNkcvSG1rMjFkaHJudkxEQ0V5ZTho?= =?utf-8?B?bGliMGh2T3BIQlU5RkxSdy9DcjVpQnpIVmtxNDlnVDFmZGJlcmY3ZlNYcVVT?= =?utf-8?B?aHFjeG9ieVUyYkJGbm8xRGtwWW1MbUJLbkQwN2ZHcUtoeE5EcGc2UTF5bDhJ?= =?utf-8?B?U2dwTk9iTzZUU3Uzdmw1dm9SbU9SMmpkazU5U0F2SEYyKzJIaVVKUVhmZUZC?= =?utf-8?B?YWFOUDNMMjFENW4vOW9pZFdrL3NrOW1qVWdBZXFsLzBDYndsc0RoUWt4N0JL?= =?utf-8?B?UUliWlBTeUlzM0pyUVk4TXlPWUZXaXFza04zOTVkQnBKT0R3UUpmQlBoZGV0?= =?utf-8?B?L2R3SnV0TzFYSEVuWGJRQ2xIdWVlbVZqNHBtc1JHSk5VMzh4STdNaktVeTVO?= =?utf-8?B?M3BuRXdoN3cxUWU3QTJyR2lVRXMrUDcrbzdIV2lXOEN4aWFzY3pQS0tseXZz?= =?utf-8?B?bVp5SkJVcGxqVTZzSUJsZGlBN2hSTGUzTnFFWGpYTCt4SlNPRXRKb015TlJl?= =?utf-8?B?TWY2Nm5odVNiY01ya3h4T1V0TmtRM2J0SUpCTHJmVEVlc3BOamNjZFlPcFVt?= =?utf-8?B?TnN4OGRuZXlmN2FVNnhnRW9NRTg2ejlzc0FwbG9kdVZtZHJJY1AraXR3Z0JG?= =?utf-8?B?ZHBIcWZKSCs4MENHa29aWldwZFQzTHZYdWZqeitSRmYycUlGeUFucHRGQS9J?= =?utf-8?B?d09vY21QT3ZvdnFQdjZUaGRUYmR1WUhpQy9QcG8ydGlmLzNheFZGWE5lM1Fw?= =?utf-8?B?bVhqRm50VUZuZlNDejJNN3RFUWtjNWNFOTloS3ZrbUhDQTdSSFhyWXFaRFpE?= =?utf-8?B?YXkwQW82NUtoOUlXN2V0OTJIUFZDUUlHemR1cmVRdGpMd2tqOXZhRHZ2SkEz?= =?utf-8?B?ZHhpNTF1MmMyVkM1by9CNmltQTg0QzBGczZHTkJMcjN3SDB6Vm1xMWdERlE1?= =?utf-8?B?ZHlPRCszQjZST00wSWZTazFFUEFFMnZzRFVUWU1TTE9uQmEwRi9ZWG5FK3d4?= =?utf-8?B?L2RuUkFkTkszU1pMWXNLY3c3SG9nNTBSTGNxeXB6R0xnc2Z4czFpQW9INDgy?= =?utf-8?B?aXVZM3N2azVaRERJSFYvdHFwT09JQWJ2dGg4eU5BbzhLYXFCUEd4dU5GV3Zs?= =?utf-8?B?dzdueHFZZ1RTckY4WWxjZ1MzU3I0ZlR1U2pJWVF2SFR0SE1jV3dBSU5rbG8w?= =?utf-8?B?QVNGeUhCb2pjb2czMlVYdTdSZjc0aFJlNlpHUlVhb0lXeitrcll1UUtESVFy?= =?utf-8?B?ZkpqWUdrSmRaem1YTW9rQUdEWVBoQmtrZVkzMjBkai9WM3FsYmVGQ0JvRXdU?= =?utf-8?B?Y1ZpTlk4WlkwNTNZZkJMQzJYOUx4SlhnZ2lWRzVDdVFiK3dncVczNzZuQWpV?= =?utf-8?B?QmJ0Y3pKZ3I3N0s2L2doUk9PNGZJenhrdXhDMWp6bmxXT0YySCtJT2t4TXV4?= =?utf-8?B?cEJUb1BtZldrNis1WXh5MDZpNkVWenlGQnJ1VVMxS3NsSS9zSGEwaEJnUXhl?= =?utf-8?B?Sm9jdjJuUFJJZEVxQytyU3dhSnBZcXgxeFNuN2c1R080UTYxRVU0ZG11ZVNl?= =?utf-8?B?bm05VGFMNktFYVVPVVFPdEVxR3hNWGkvMGU0K0N2Sys1NjJrUFkreThmTlor?= =?utf-8?B?RnpZTHNvdXM2SkVPN1JWK005R1RaSUV3M1Q3ZmNjYnU4eVhuNE44bGRodXlp?= =?utf-8?B?Z1ZVUGxqR1AxZVdveitTYThkUjBYTG5KMVJTRWRCOTJhdncvamwrTkd4R3cx?= =?utf-8?B?emludS9JU0ZDOExBVTI3T3AwclJzT1JLWUF1bndJanFWU2pCNWFuQnU0ZEJF?= =?utf-8?B?dzdaSU1ZVFlnQ1BYc1FMRnRsQzUvVlQ3VDBEbWZXZjJBKzh5WTVxNWhYUzlT?= =?utf-8?Q?dYStDurphVfYZ?= X-Forefront-Antispam-Report: CIP:192.176.1.74; CTRY:SE; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:oa.msg.ericsson.com; PTR:office365.se.ericsson.net; CAT:NONE; SFS:(13230031)(376005)(82310400014)(1800799015)(36860700004); DIR:OUT; SFP:1101; X-OriginatorOrg: ericsson.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Apr 2024 09:15:25.9859 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 299acc7e-44d9-4f1c-3088-08dc65d168cb X-MS-Exchange-CrossTenant-Id: 92e84ceb-fbfd-47ab-be52-080c6b87953f X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=92e84ceb-fbfd-47ab-be52-080c6b87953f; Ip=[192.176.1.74]; Helo=[oa.msg.ericsson.com] X-MS-Exchange-CrossTenant-AuthSource: AMS0EPF000001AB.eurprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DU0PR07MB9242 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Cache align Rx and Tx queue struct to avoid false sharing. The RX struct happens to be 64 bytes on x86_64 already, so cache alignment has no effect there, but it does on 32-bit ISAs. The TX struct is 56 bytes on x86_64. Both structs keep counters, and in the RX case they are updated even for empty polls. v3: Move __rte_cache_aligned directive to a MSVC-compatible location. Fixes: 364e08f2bbc0 ("af_packet: add PMD for AF_PACKET-based virtual devices") Cc: stable@dpdk.org Signed-off-by: Mattias Rönnblom --- drivers/net/af_packet/rte_eth_af_packet.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/af_packet/rte_eth_af_packet.c b/drivers/net/af_packet/rte_eth_af_packet.c index 397a32db58..6b7b16f348 100644 --- a/drivers/net/af_packet/rte_eth_af_packet.c +++ b/drivers/net/af_packet/rte_eth_af_packet.c @@ -6,6 +6,7 @@ * All rights reserved. */ +#include #include #include #include @@ -39,7 +40,7 @@ #define DFLT_FRAME_SIZE (1 << 11) #define DFLT_FRAME_COUNT (1 << 9) -struct pkt_rx_queue { +struct __rte_cache_aligned pkt_rx_queue { int sockfd; struct iovec *rd; @@ -55,7 +56,7 @@ struct pkt_rx_queue { volatile unsigned long rx_bytes; }; -struct pkt_tx_queue { +struct __rte_cache_aligned pkt_tx_queue { int sockfd; unsigned int frame_data_size; -- 2.34.1