From: Akihiko Odaki <akihiko.odaki@daynix.com>
Cc: Jason Wang <jasowang@redhat.com>,
Dmitry Fleytman <dmitry.fleytman@gmail.com>,
Thomas Huth <thuth@redhat.com>,
Laurent Vivier <lvivier@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
qemu-devel@nongnu.org, qemu-ppc@nongnu.org,
"Michael S . Tsirkin" <mst@redhat.com>,
Yan Vugenfirer <yvugenfi@redhat.com>,
Yuri Benditovich <yuri.benditovich@daynix.com>,
Sriram Yagnaraman <sriram.yagnaraman@est.tech>,
Alexander Bulekov <alxndr@bu.edu>,
Akihiko Odaki <akihiko.odaki@daynix.com>
Subject: [PATCH v4 15/28] e1000e: Introduce e1000_rx_desc_union
Date: Mon, 30 Jan 2023 22:47:02 +0900 [thread overview]
Message-ID: <20230130134715.76604-16-akihiko.odaki@daynix.com> (raw)
In-Reply-To: <20230130134715.76604-1-akihiko.odaki@daynix.com>
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 <akihiko.odaki@daynix.com>
---
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 6a36573802..4545fe25a6 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 b8670662c8..d8c17baf8f 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);
--
2.39.1
next prev parent reply other threads:[~2023-01-30 13:49 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-30 13:46 [PATCH v4 00/28] e1000x cleanups (preliminary for IGB) Akihiko Odaki
2023-01-30 13:46 ` [PATCH v4 01/28] e1000e: Fix the code style Akihiko Odaki
2023-01-30 13:46 ` [PATCH v4 02/28] hw/net: Add more MII definitions Akihiko Odaki
2023-01-30 13:46 ` [PATCH v4 03/28] fsl_etsec: Use hw/net/mii.h Akihiko Odaki
2023-01-30 13:46 ` [PATCH v4 04/28] e1000: " Akihiko Odaki
2023-01-30 13:46 ` [PATCH v4 05/28] e1000: Mask registers when writing Akihiko Odaki
2023-01-30 13:46 ` [PATCH v4 06/28] e1000e: " Akihiko Odaki
2023-01-30 13:46 ` [PATCH v4 07/28] e1000: Use more constant definitions Akihiko Odaki
2023-01-30 13:46 ` [PATCH v4 08/28] e1000e: " Akihiko Odaki
2023-01-30 13:46 ` [PATCH v4 09/28] e1000: Use memcpy to intialize registers Akihiko Odaki
2023-01-30 13:46 ` [PATCH v4 10/28] e1000e: " Akihiko Odaki
2023-01-30 13:46 ` [PATCH v4 11/28] e1000e: Remove pending interrupt flags Akihiko Odaki
2023-01-30 13:46 ` [PATCH v4 12/28] e1000e: Improve software reset Akihiko Odaki
2023-01-30 13:47 ` [PATCH v4 13/28] e1000: Configure ResettableClass Akihiko Odaki
2023-01-30 13:47 ` [PATCH v4 14/28] e1000e: " Akihiko Odaki
2023-01-30 13:47 ` Akihiko Odaki [this message]
2023-01-30 13:47 ` [PATCH v4 16/28] e1000e: Set MII_ANER_NWAY Akihiko Odaki
2023-01-30 13:47 ` [PATCH v4 17/28] e1000e: Remove extra pointer indirection Akihiko Odaki
2023-01-30 13:47 ` [PATCH v4 18/28] net: Check L4 header size Akihiko Odaki
2023-01-30 13:47 ` [PATCH v4 19/28] e1000x: Alter the signature of e1000x_is_vlan_packet Akihiko Odaki
2023-01-30 13:47 ` [PATCH v4 20/28] net: Strip virtio-net header when dumping Akihiko Odaki
2023-01-30 15:12 ` Michael S. Tsirkin
2023-01-30 15:36 ` Akihiko Odaki
2023-01-30 15:47 ` Michael S. Tsirkin
2023-01-31 2:36 ` Akihiko Odaki
2023-01-30 13:47 ` [PATCH v4 21/28] hw/net/net_tx_pkt: Automatically determine if virtio-net header is used Akihiko Odaki
2023-01-30 13:47 ` [PATCH v4 22/28] hw/net/net_rx_pkt: Remove net_rx_pkt_has_virt_hdr Akihiko Odaki
2023-01-30 13:47 ` [PATCH v4 23/28] e1000e: Perform software segmentation for loopback Akihiko Odaki
2023-01-30 13:47 ` [PATCH v4 24/28] hw/net/net_tx_pkt: Implement TCP segmentation Akihiko Odaki
2023-01-30 13:47 ` [PATCH v4 25/28] hw/net/net_tx_pkt: Check the payload length Akihiko Odaki
2023-01-30 13:47 ` [PATCH v4 26/28] e1000e: Do not assert when MSI-X is disabled later Akihiko Odaki
2023-01-30 13:47 ` [PATCH v4 27/28] MAINTAINERS: Add Akihiko Odaki as a e1000e reviewer Akihiko Odaki
2023-01-30 13:47 ` [PATCH v4 28/28] MAINTAINERS: Add e1000e test files Akihiko Odaki
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