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[PULL 26/39] hw/net/e1000e_core: Use definition to avoid dynamic stack a
From: |
Peter Maydell |
Subject: |
[PULL 26/39] hw/net/e1000e_core: Use definition to avoid dynamic stack allocation |
Date: |
Thu, 22 Sep 2022 17:35:23 +0100 |
From: Philippe Mathieu-Daudé <philmd@redhat.com>
The compiler isn't clever enough to figure 'min_buf_size'
is a constant, so help it by using a definitions instead.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20220819153931.3147384-6-peter.maydell@linaro.org
---
hw/net/e1000e_core.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c
index 208e3e0d798..82aa61fedcd 100644
--- a/hw/net/e1000e_core.c
+++ b/hw/net/e1000e_core.c
@@ -1622,15 +1622,16 @@ e1000e_rx_fix_l4_csum(E1000ECore *core, struct NetRxPkt
*pkt)
}
}
+/* Min. octets in an ethernet frame sans FCS */
+#define MIN_BUF_SIZE 60
+
ssize_t
e1000e_receive_iov(E1000ECore *core, const struct iovec *iov, int iovcnt)
{
static const int maximum_ethernet_hdr_len = (14 + 4);
- /* Min. octets in an ethernet frame sans FCS */
- static const int min_buf_size = 60;
uint32_t n = 0;
- uint8_t min_buf[min_buf_size];
+ uint8_t min_buf[MIN_BUF_SIZE];
struct iovec min_iov;
uint8_t *filter_buf;
size_t size, orig_size;
--
2.25.1
- [PULL 31/39] ui/curses: Avoid dynamic stack allocation, (continued)
- [PULL 31/39] ui/curses: Avoid dynamic stack allocation, Peter Maydell, 2022/09/22
- [PULL 10/39] target/arm: Use GetPhysAddrResult in pmsav8_mpu_lookup, Peter Maydell, 2022/09/22
- [PULL 32/39] tests/unit/test-vmstate: Avoid dynamic stack allocation, Peter Maydell, 2022/09/22
- [PULL 21/39] hw/net/lan9118: Signal TSFL_INT flag when TX FIFO reaches specified level, Peter Maydell, 2022/09/22
- [PULL 23/39] chardev/baum: Use definitions to avoid dynamic stack allocation, Peter Maydell, 2022/09/22
- [PULL 28/39] hw/intc/xics: Avoid dynamic stack allocation, Peter Maydell, 2022/09/22
- [PULL 18/39] target/arm: Add secure parameter to get_phys_addr_pmsav7, Peter Maydell, 2022/09/22
- [PULL 30/39] hw/usb/hcd-ohci: Use definition to avoid dynamic stack allocation, Peter Maydell, 2022/09/22
- [PULL 25/39] io/channel-websock: Replace strlen(const_str) by sizeof(const_str) - 1, Peter Maydell, 2022/09/22
- [PULL 24/39] chardev/baum: Avoid dynamic stack allocation, Peter Maydell, 2022/09/22
- [PULL 26/39] hw/net/e1000e_core: Use definition to avoid dynamic stack allocation,
Peter Maydell <=
- [PULL 29/39] hw/i386/multiboot: Avoid dynamic stack allocation, Peter Maydell, 2022/09/22
- [PULL 20/39] hw/acpi: Add ospm_status hook implementation for acpi-ged, Peter Maydell, 2022/09/22
- [PULL 37/39] configure: Remove use of backtick `...` syntax, Peter Maydell, 2022/09/22
- [PULL 35/39] configure: Add missing quoting for some easy cases, Peter Maydell, 2022/09/22
- [PULL 36/39] configure: Add './' on front of glob of */config-devices.mak.d, Peter Maydell, 2022/09/22
- Re: [PULL 00/39] target-arm queue, Stefan Hajnoczi, 2022/09/26