Date: Sat, 15 Sep 2007 23:26:58 GMT From: Kip Macy <kmacy@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 126455 for review Message-ID: <200709152326.l8FNQwPq024216@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=126455 Change 126455 by kmacy@kmacy_home:ethng on 2007/09/15 23:26:15 skip busdma rx setup on x86 increases rx throughput by about 15% on udp netperf recv Affected files ... .. //depot/projects/ethng/src/sys/dev/cxgb/cxgb_sge.c#20 edit Differences ... ==== //depot/projects/ethng/src/sys/dev/cxgb/cxgb_sge.c#20 (text+ko) ==== @@ -83,7 +83,7 @@ #define SGE_RX_SM_BUF_SIZE 1536 #define SGE_RX_DROP_THRES 16 -#define SGE_RX_COPY_THRES 128 +#define SGE_RX_COPY_THRES MHLEN /* * Period of the Tx buffer reclaim timer. This timer does not need to run @@ -518,6 +518,7 @@ qs->rspq.polling = 0 /* p->polling */; } +#if !defined(__i386__) && !defined(__amd64__) static void refill_fl_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) { @@ -528,7 +529,7 @@ cb_arg->nseg = nseg; } - +#endif /** * refill_fl - refill an SGE free-buffer list * @sc: the controller softc @@ -567,7 +568,7 @@ } sd->flags |= RX_SW_DESC_MAP_CREATED; } - +#if !defined(__i386__) && !defined(__amd64__) err = bus_dmamap_load(q->entry_tag, sd->map, (uint32_t *)cl + 1, q->buf_size, refill_fl_cb, &cb_arg, 0); @@ -578,7 +579,9 @@ */ return; } - +#else + cb_arg.seg.ds_addr = pmap_kextract((vm_offset_t)((uint32_t *)cl + 1)); +#endif sd->flags |= RX_SW_DESC_INUSE; sd->rxsd_cl = cl; sd->data = (uint8_t *)(sd->rxsd_ref + 1);
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