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Iglesias" , Alistair Francis , Peter Maydell , Jason Wang , Markus Armbruster , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , Tong Ho , Ramon Fried Subject: [PATCH v5 12/12] net: cadence_gem: Fix RX address filtering Date: Tue, 12 May 2020 20:24:54 +0530 Message-Id: <1589295294-26466-13-git-send-email-sai.pavan.boddu@xilinx.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1589295294-26466-1-git-send-email-sai.pavan.boddu@xilinx.com> References: <1589295294-26466-1-git-send-email-sai.pavan.boddu@xilinx.com> X-TM-AS-Product-Ver: IMSS-7.1.0.1224-8.2.0.1013-23620.005 X-TM-AS-User-Approved-Sender: Yes;Yes X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:149.199.60.83; CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:xsj-pvapsmtpgw01; PTR:unknown-60-83.xilinx.com; CAT:NONE; SFTY:; SFS:(136003)(396003)(376002)(346002)(39860400002)(46966005)(33430700001)(36756003)(70206006)(316002)(2616005)(426003)(33440700001)(70586007)(478600001)(356005)(6266002)(110136005)(82310400002)(4326008)(2906002)(42186006)(6666004)(186003)(82740400003)(8936002)(5660300002)(81166007)(336012)(26005)(47076004)(8676002); DIR:OUT; SFP:1101; MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: faa0bdcf-0e19-4656-3112-08d7f685c867 X-MS-TrafficTypeDiagnostic: BYAPR02MB5960: X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Oob-TLC-OOBClassifiers: OLM:236; X-Forefront-PRVS: 0401647B7F X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: q9Ng9b6dLAX2aYSlgm+icdToDwywh75cQPq6x3gUZYwzoM/KiAgldsOzmISAbmIZpCxxNaDXDKW3ORrwIGIFj8U45pEPozgCKKL8qlseWelQwaR1LenPnRDjyBKljHnfW9uExill7GAriED5mDcaLIvu73DOOlMwS+gcE6BcVITz/aB4clOTzQrJdLOmA/drq1E1KvucjN5FTAKA98sz/Zpu9DrfU7JG2rU/MQtqfZgRbIEGgOgy4dDwHG4Qwp3qVwUhoa5L9Y4dpLJesMz+LI3y4Jr/YPOAk8l1W2izhOkmSeMQ2l5HnrLDLpcvl2FJldUd73KkzyU2ZJ3ep2LnNp7b9yb0SU6S5K3zOEysYpHVaOjnm7ZdXCjQf0xFAbuiLRowlrSbtGE71hcVYoMvyvk+0IvSMTGaoSUqZrgdn0e58P6I0Hc3NOqYKsJpkzyYjt7iT/co80gqblVP+nxBX9oIBNHrI9vlJ8sdQVb/VmxKYXD4QXMe2I0ei7R8Yieol8xal1+VRbn3M7qZ1XQ3ocb1qEymhl3D2j3Yog5thDMlqyeXhz4OwvIi8ztOn9ey/hYKPcGombWtY0x9a5Qp/A== X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 May 2020 15:04:34.9363 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: faa0bdcf-0e19-4656-3112-08d7f685c867 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c; Ip=[149.199.60.83]; Helo=[xsj-pvapsmtpgw01] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR02MB5960 Received-SPF: pass client-ip=40.107.236.63; envelope-from=saipava@xilinx.com; helo=NAM11-BN8-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/12 11:04:36 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Tong Ho Two defects are fixed: 1/ Detection of multicast frames 2/ Treating drop of mis-addressed frames as non-error Signed-off-by: Tong Ho Signed-off-by: Edgar E. Iglesias Signed-off-by: Sai Pavan Boddu Reviewed-by: Edgar E. Iglesias --- hw/net/cadence_gem.c | 26 +++++++++++--------------- 1 file changed, 11 insertions(+), 15 deletions(-) diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c index 57d94a5..71d42b8 100644 --- a/hw/net/cadence_gem.c +++ b/hw/net/cadence_gem.c @@ -34,6 +34,7 @@ #include "qemu/module.h" #include "sysemu/dma.h" #include "net/checksum.h" +#include "net/eth.h" #define CADENCE_GEM_ERR_DEBUG 0 #define DB_PRINT(...) do {\ @@ -702,7 +703,7 @@ static unsigned calc_mac_hash(const uint8_t *mac) static int gem_mac_address_filter(CadenceGEMState *s, const uint8_t *packet) { uint8_t *gem_spaddr; - int i; + int i, is_mc; /* Promiscuous mode? */ if (s->regs[GEM_NWCFG] & GEM_NWCFG_PROMISC) { @@ -718,22 +719,17 @@ static int gem_mac_address_filter(CadenceGEMState *s, const uint8_t *packet) } /* Accept packets -w- hash match? */ - if ((packet[0] == 0x01 && (s->regs[GEM_NWCFG] & GEM_NWCFG_MCAST_HASH)) || - (packet[0] != 0x01 && (s->regs[GEM_NWCFG] & GEM_NWCFG_UCAST_HASH))) { + is_mc = is_multicast_ether_addr(packet); + if ((is_mc && (s->regs[GEM_NWCFG] & GEM_NWCFG_MCAST_HASH)) || + (!is_mc && (s->regs[GEM_NWCFG] & GEM_NWCFG_UCAST_HASH))) { + uint64_t buckets; unsigned hash_index; hash_index = calc_mac_hash(packet); - if (hash_index < 32) { - if (s->regs[GEM_HASHLO] & (1<regs[GEM_HASHHI] & (1<regs[GEM_HASHHI] << 32) | s->regs[GEM_HASHLO]; + if ((buckets >> hash_index) & 1) { + return is_mc ? GEM_RX_MULTICAST_HASH_ACCEPT + : GEM_RX_UNICAST_HASH_ACCEPT; } } @@ -958,7 +954,7 @@ static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size) /* Is this destination MAC address "for us" ? */ maf = gem_mac_address_filter(s, buf); if (maf == GEM_RX_REJECT) { - return -1; + return size; /* no, drop siliently b/c it's not an error */ } /* Discard packets with receive length error enabled ? */