From patchwork Tue Mar 7 07:07:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 13162951 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9188AC6FD20 for ; Tue, 7 Mar 2023 07:18:02 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pZRSI-0000PT-2M; Tue, 07 Mar 2023 02:09:50 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pZRSF-0000CQ-Lp for qemu-devel@nongnu.org; Tue, 07 Mar 2023 02:09:47 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pZRSD-0005UG-GK for qemu-devel@nongnu.org; Tue, 07 Mar 2023 02:09:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1678172984; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ryMCyp1vtep2pPAMJb6ttMSfPr7AAFLitYPp+rHzm1w=; b=iqmETzg86yU8Zesa5Q67Fw1lwE+azeuGD77xDrQCkyO4uKKDLrtXA+SMHzt0zbG+s7tAVo TQGdlZuaaeF6xiKb4YpfZh2OEgymRngnrn886NP2rrorN6lm17tCp9xAVPNjRne7zEXfkt YHFAGtZvK7Ier6yHDgJg4Nwj280u/TY= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-401-_16pMwfqNMyXHr4KT-chFQ-1; Tue, 07 Mar 2023 02:09:41 -0500 X-MC-Unique: _16pMwfqNMyXHr4KT-chFQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4BBBF85D187; Tue, 7 Mar 2023 07:09:41 +0000 (UTC) Received: from localhost.localdomain (ovpn-12-78.pek2.redhat.com [10.72.12.78]) by smtp.corp.redhat.com (Postfix) with ESMTP id 61A69400F8FA; Tue, 7 Mar 2023 07:09:39 +0000 (UTC) From: Jason Wang To: qemu-devel@nongnu.org, peter.maydell@linaro.org Cc: Akihiko Odaki , Jason Wang Subject: [PULL 16/51] e1000e: Introduce e1000_rx_desc_union Date: Tue, 7 Mar 2023 15:07:41 +0800 Message-Id: <20230307070816.34833-17-jasowang@redhat.com> In-Reply-To: <20230307070816.34833-1-jasowang@redhat.com> References: <20230307070816.34833-1-jasowang@redhat.com> MIME-Version: 1.0 Content-type: text/plain X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.129.124; envelope-from=jasowang@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Akihiko Odaki Before this change, e1000e_write_packet_to_guest() allocated the receive descriptor buffer as an array of uint8_t. This does not ensure the buffer is sufficiently aligned. Introduce e1000_rx_desc_union type, a union type of all receive descriptor types to correct this. Signed-off-by: Akihiko Odaki Signed-off-by: Jason Wang --- hw/net/e1000_regs.h | 1 - hw/net/e1000e_core.c | 115 +++++++++++++++++++++++++-------------------------- 2 files changed, 57 insertions(+), 59 deletions(-) diff --git a/hw/net/e1000_regs.h b/hw/net/e1000_regs.h index 6a36573..4545fe2 100644 --- a/hw/net/e1000_regs.h +++ b/hw/net/e1000_regs.h @@ -1061,7 +1061,6 @@ union e1000_rx_desc_packet_split { #define E1000_RING_DESC_LEN_SHIFT (4) #define E1000_MIN_RX_DESC_LEN E1000_RING_DESC_LEN -#define E1000_MAX_RX_DESC_LEN (sizeof(union e1000_rx_desc_packet_split)) /* Receive Descriptor bit definitions */ #define E1000_RXD_STAT_DD 0x01 /* Descriptor Done */ diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c index b867066..d8c17ba 100644 --- a/hw/net/e1000e_core.c +++ b/hw/net/e1000e_core.c @@ -55,6 +55,12 @@ #define E1000E_MAX_TX_FRAGS (64) +union e1000_rx_desc_union { + struct e1000_rx_desc legacy; + union e1000_rx_desc_extended extended; + union e1000_rx_desc_packet_split packet_split; +}; + static inline void e1000e_set_interrupt_cause(E1000ECore *core, uint32_t val); @@ -1053,29 +1059,28 @@ e1000e_receive_filter(E1000ECore *core, const uint8_t *buf, int size) } static inline void -e1000e_read_lgcy_rx_descr(E1000ECore *core, uint8_t *desc, hwaddr *buff_addr) +e1000e_read_lgcy_rx_descr(E1000ECore *core, struct e1000_rx_desc *desc, + hwaddr *buff_addr) { - struct e1000_rx_desc *d = (struct e1000_rx_desc *) desc; - *buff_addr = le64_to_cpu(d->buffer_addr); + *buff_addr = le64_to_cpu(desc->buffer_addr); } static inline void -e1000e_read_ext_rx_descr(E1000ECore *core, uint8_t *desc, hwaddr *buff_addr) +e1000e_read_ext_rx_descr(E1000ECore *core, union e1000_rx_desc_extended *desc, + hwaddr *buff_addr) { - union e1000_rx_desc_extended *d = (union e1000_rx_desc_extended *) desc; - *buff_addr = le64_to_cpu(d->read.buffer_addr); + *buff_addr = le64_to_cpu(desc->read.buffer_addr); } static inline void -e1000e_read_ps_rx_descr(E1000ECore *core, uint8_t *desc, +e1000e_read_ps_rx_descr(E1000ECore *core, + union e1000_rx_desc_packet_split *desc, hwaddr (*buff_addr)[MAX_PS_BUFFERS]) { int i; - union e1000_rx_desc_packet_split *d = - (union e1000_rx_desc_packet_split *) desc; for (i = 0; i < MAX_PS_BUFFERS; i++) { - (*buff_addr)[i] = le64_to_cpu(d->read.buffer_addr[i]); + (*buff_addr)[i] = le64_to_cpu(desc->read.buffer_addr[i]); } trace_e1000e_rx_desc_ps_read((*buff_addr)[0], (*buff_addr)[1], @@ -1083,17 +1088,17 @@ e1000e_read_ps_rx_descr(E1000ECore *core, uint8_t *desc, } static inline void -e1000e_read_rx_descr(E1000ECore *core, uint8_t *desc, +e1000e_read_rx_descr(E1000ECore *core, union e1000_rx_desc_union *desc, hwaddr (*buff_addr)[MAX_PS_BUFFERS]) { if (e1000e_rx_use_legacy_descriptor(core)) { - e1000e_read_lgcy_rx_descr(core, desc, &(*buff_addr)[0]); + e1000e_read_lgcy_rx_descr(core, &desc->legacy, &(*buff_addr)[0]); (*buff_addr)[1] = (*buff_addr)[2] = (*buff_addr)[3] = 0; } else { if (core->mac[RCTL] & E1000_RCTL_DTYP_PS) { - e1000e_read_ps_rx_descr(core, desc, buff_addr); + e1000e_read_ps_rx_descr(core, &desc->packet_split, buff_addr); } else { - e1000e_read_ext_rx_descr(core, desc, &(*buff_addr)[0]); + e1000e_read_ext_rx_descr(core, &desc->extended, &(*buff_addr)[0]); (*buff_addr)[1] = (*buff_addr)[2] = (*buff_addr)[3] = 0; } } @@ -1264,7 +1269,7 @@ func_exit: } static inline void -e1000e_write_lgcy_rx_descr(E1000ECore *core, uint8_t *desc, +e1000e_write_lgcy_rx_descr(E1000ECore *core, struct e1000_rx_desc *desc, struct NetRxPkt *pkt, const E1000E_RSSInfo *rss_info, uint16_t length) @@ -1272,71 +1277,66 @@ e1000e_write_lgcy_rx_descr(E1000ECore *core, uint8_t *desc, uint32_t status_flags, rss, mrq; uint16_t ip_id; - struct e1000_rx_desc *d = (struct e1000_rx_desc *) desc; - assert(!rss_info->enabled); - d->length = cpu_to_le16(length); - d->csum = 0; + desc->length = cpu_to_le16(length); + desc->csum = 0; e1000e_build_rx_metadata(core, pkt, pkt != NULL, rss_info, &rss, &mrq, &status_flags, &ip_id, - &d->special); - d->errors = (uint8_t) (le32_to_cpu(status_flags) >> 24); - d->status = (uint8_t) le32_to_cpu(status_flags); + &desc->special); + desc->errors = (uint8_t) (le32_to_cpu(status_flags) >> 24); + desc->status = (uint8_t) le32_to_cpu(status_flags); } static inline void -e1000e_write_ext_rx_descr(E1000ECore *core, uint8_t *desc, +e1000e_write_ext_rx_descr(E1000ECore *core, union e1000_rx_desc_extended *desc, struct NetRxPkt *pkt, const E1000E_RSSInfo *rss_info, uint16_t length) { - union e1000_rx_desc_extended *d = (union e1000_rx_desc_extended *) desc; - - memset(&d->wb, 0, sizeof(d->wb)); + memset(&desc->wb, 0, sizeof(desc->wb)); - d->wb.upper.length = cpu_to_le16(length); + desc->wb.upper.length = cpu_to_le16(length); e1000e_build_rx_metadata(core, pkt, pkt != NULL, rss_info, - &d->wb.lower.hi_dword.rss, - &d->wb.lower.mrq, - &d->wb.upper.status_error, - &d->wb.lower.hi_dword.csum_ip.ip_id, - &d->wb.upper.vlan); + &desc->wb.lower.hi_dword.rss, + &desc->wb.lower.mrq, + &desc->wb.upper.status_error, + &desc->wb.lower.hi_dword.csum_ip.ip_id, + &desc->wb.upper.vlan); } static inline void -e1000e_write_ps_rx_descr(E1000ECore *core, uint8_t *desc, +e1000e_write_ps_rx_descr(E1000ECore *core, + union e1000_rx_desc_packet_split *desc, struct NetRxPkt *pkt, const E1000E_RSSInfo *rss_info, size_t ps_hdr_len, uint16_t(*written)[MAX_PS_BUFFERS]) { int i; - union e1000_rx_desc_packet_split *d = - (union e1000_rx_desc_packet_split *) desc; - memset(&d->wb, 0, sizeof(d->wb)); + memset(&desc->wb, 0, sizeof(desc->wb)); - d->wb.middle.length0 = cpu_to_le16((*written)[0]); + desc->wb.middle.length0 = cpu_to_le16((*written)[0]); for (i = 0; i < PS_PAGE_BUFFERS; i++) { - d->wb.upper.length[i] = cpu_to_le16((*written)[i + 1]); + desc->wb.upper.length[i] = cpu_to_le16((*written)[i + 1]); } e1000e_build_rx_metadata(core, pkt, pkt != NULL, rss_info, - &d->wb.lower.hi_dword.rss, - &d->wb.lower.mrq, - &d->wb.middle.status_error, - &d->wb.lower.hi_dword.csum_ip.ip_id, - &d->wb.middle.vlan); + &desc->wb.lower.hi_dword.rss, + &desc->wb.lower.mrq, + &desc->wb.middle.status_error, + &desc->wb.lower.hi_dword.csum_ip.ip_id, + &desc->wb.middle.vlan); - d->wb.upper.header_status = + desc->wb.upper.header_status = cpu_to_le16(ps_hdr_len | (ps_hdr_len ? E1000_RXDPS_HDRSTAT_HDRSP : 0)); trace_e1000e_rx_desc_ps_write((*written)[0], (*written)[1], @@ -1344,20 +1344,21 @@ e1000e_write_ps_rx_descr(E1000ECore *core, uint8_t *desc, } static inline void -e1000e_write_rx_descr(E1000ECore *core, uint8_t *desc, +e1000e_write_rx_descr(E1000ECore *core, union e1000_rx_desc_union *desc, struct NetRxPkt *pkt, const E1000E_RSSInfo *rss_info, size_t ps_hdr_len, uint16_t(*written)[MAX_PS_BUFFERS]) { if (e1000e_rx_use_legacy_descriptor(core)) { assert(ps_hdr_len == 0); - e1000e_write_lgcy_rx_descr(core, desc, pkt, rss_info, (*written)[0]); + e1000e_write_lgcy_rx_descr(core, &desc->legacy, pkt, rss_info, + (*written)[0]); } else { if (core->mac[RCTL] & E1000_RCTL_DTYP_PS) { - e1000e_write_ps_rx_descr(core, desc, pkt, rss_info, + e1000e_write_ps_rx_descr(core, &desc->packet_split, pkt, rss_info, ps_hdr_len, written); } else { assert(ps_hdr_len == 0); - e1000e_write_ext_rx_descr(core, desc, pkt, rss_info, + e1000e_write_ext_rx_descr(core, &desc->extended, pkt, rss_info, (*written)[0]); } } @@ -1365,12 +1366,12 @@ struct NetRxPkt *pkt, const E1000E_RSSInfo *rss_info, static inline void e1000e_pci_dma_write_rx_desc(E1000ECore *core, dma_addr_t addr, - uint8_t *desc, dma_addr_t len) + union e1000_rx_desc_union *desc, dma_addr_t len) { PCIDevice *dev = core->owner; if (e1000e_rx_use_legacy_descriptor(core)) { - struct e1000_rx_desc *d = (struct e1000_rx_desc *) desc; + struct e1000_rx_desc *d = &desc->legacy; size_t offset = offsetof(struct e1000_rx_desc, status); uint8_t status = d->status; @@ -1383,8 +1384,7 @@ e1000e_pci_dma_write_rx_desc(E1000ECore *core, dma_addr_t addr, } } else { if (core->mac[RCTL] & E1000_RCTL_DTYP_PS) { - union e1000_rx_desc_packet_split *d = - (union e1000_rx_desc_packet_split *) desc; + union e1000_rx_desc_packet_split *d = &desc->packet_split; size_t offset = offsetof(union e1000_rx_desc_packet_split, wb.middle.status_error); uint32_t status = d->wb.middle.status_error; @@ -1397,8 +1397,7 @@ e1000e_pci_dma_write_rx_desc(E1000ECore *core, dma_addr_t addr, pci_dma_write(dev, addr + offset, &status, sizeof(status)); } } else { - union e1000_rx_desc_extended *d = - (union e1000_rx_desc_extended *) desc; + union e1000_rx_desc_extended *d = &desc->extended; size_t offset = offsetof(union e1000_rx_desc_extended, wb.upper.status_error); uint32_t status = d->wb.upper.status_error; @@ -1542,7 +1541,7 @@ e1000e_write_packet_to_guest(E1000ECore *core, struct NetRxPkt *pkt, { PCIDevice *d = core->owner; dma_addr_t base; - uint8_t desc[E1000_MAX_RX_DESC_LEN]; + union e1000_rx_desc_union desc; size_t desc_size; size_t desc_offset = 0; size_t iov_ofs = 0; @@ -1578,7 +1577,7 @@ e1000e_write_packet_to_guest(E1000ECore *core, struct NetRxPkt *pkt, trace_e1000e_rx_descr(rxi->idx, base, core->rx_desc_len); - e1000e_read_rx_descr(core, desc, &ba); + e1000e_read_rx_descr(core, &desc, &ba); if (ba[0]) { if (desc_offset < size) { @@ -1648,9 +1647,9 @@ e1000e_write_packet_to_guest(E1000ECore *core, struct NetRxPkt *pkt, is_last = true; } - e1000e_write_rx_descr(core, desc, is_last ? core->rx_pkt : NULL, + e1000e_write_rx_descr(core, &desc, is_last ? core->rx_pkt : NULL, rss_info, do_ps ? ps_hdr_len : 0, &bastate.written); - e1000e_pci_dma_write_rx_desc(core, base, desc, core->rx_desc_len); + e1000e_pci_dma_write_rx_desc(core, base, &desc, core->rx_desc_len); e1000e_ring_advance(core, rxi, core->rx_desc_len / E1000_MIN_RX_DESC_LEN);