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hw/net/e1000e_core: Use definition to avoid dynamic stack allocation

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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
This commit is contained in:
Philippe Mathieu-Daudé 2022-08-19 16:39:25 +01:00 • committed by Peter Maydell
parent 5e689840a1
commit c140a69055
1 changed files with 4 additions and 3 deletions
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7
hw/net/e1000e_core.c
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@ -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 ssize_t
e1000e_receive_iov(E1000ECore *core, const struct iovec *iov, int iovcnt) e1000e_receive_iov(E1000ECore *core, const struct iovec *iov, int iovcnt)
{ {
static const int maximum_ethernet_hdr_len = (14 + 4); 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; uint32_t n = 0;
uint8_t min_buf[min_buf_size]; uint8_t min_buf[MIN_BUF_SIZE];
struct iovec min_iov; struct iovec min_iov;
uint8_t *filter_buf; uint8_t *filter_buf;
size_t size, orig_size; size_t size, orig_size;