- if ((rx_buf_size < pdu + rx_prefix_size) && !rx_scatter_enabled) {
- *error = "Rx scatter is disabled and RxQ mbuf pool object size is too small";
+ uint32_t effective_rx_scatter_max;
+ uint32_t rx_scatter_bufs;
+
+ effective_rx_scatter_max = rx_scatter_enabled ? rx_scatter_max : 1;
+ rx_scatter_bufs = EFX_DIV_ROUND_UP(pdu + rx_prefix_size, rx_buf_size);
+
+ if (rx_scatter_bufs > effective_rx_scatter_max) {
+ if (rx_scatter_enabled)
+ *error = "Possible number of Rx scatter buffers exceeds maximum number";
+ else
+ *error = "Rx scatter is disabled and RxQ mbuf pool object size is too small";