09fe63205c
- Stateful TCP offload drivers for Terminator 3 and 4 (T3 and T4) ASICs. These are available as t3_tom and t4_tom modules that augment cxgb(4) and cxgbe(4) respectively. The cxgb/cxgbe drivers continue to work as usual with or without these extra features. - iWARP driver for Terminator 3 ASIC (kernel verbs). T4 iWARP in the works and will follow soon. Build-tested with make universe. 30s overview ============ What interfaces support TCP offload? Look for TOE4 and/or TOE6 in the capabilities of an interface: # ifconfig -m | grep TOE Enable/disable TCP offload on an interface (just like any other ifnet capability): # ifconfig cxgbe0 toe # ifconfig cxgbe0 -toe Which connections are offloaded? Look for toe4 and/or toe6 in the output of netstat and sockstat: # netstat -np tcp | grep toe # sockstat -46c | grep toe Reviewed by: bz, gnn Sponsored by: Chelsio communications. MFC after: ~3 months (after 9.1, and after ensuring MFC is feasible)
68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
/*-
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* Copyright (c) 2007, 2009 Kip Macy <kmacy@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#ifndef _MVEC_H_
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#define _MVEC_H_
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#include <machine/bus.h>
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static __inline void
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busdma_map_mbuf_fast(bus_dma_tag_t tag, bus_dmamap_t map,
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struct mbuf *m, bus_dma_segment_t *seg)
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{
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#if defined(__i386__) || defined(__amd64__)
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seg->ds_addr = pmap_kextract(mtod(m, vm_offset_t));
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seg->ds_len = m->m_len;
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#else
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int nsegstmp;
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bus_dmamap_load_mbuf_sg(tag, map, m, seg, &nsegstmp, 0);
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#endif
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}
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int busdma_map_sg_collapse(bus_dma_tag_t tag, bus_dmamap_t map,
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struct mbuf **m, bus_dma_segment_t *segs, int *nsegs);
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void busdma_map_sg_vec(bus_dma_tag_t tag, bus_dmamap_t map,
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struct mbuf *m, bus_dma_segment_t *segs, int *nsegs);
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static __inline void
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m_freem_list(struct mbuf *m)
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{
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struct mbuf *n;
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while (m != NULL) {
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n = m->m_nextpkt;
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if (n != NULL)
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prefetch(n);
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m_freem(m);
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m = n;
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}
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}
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#endif /* _MVEC_H_ */
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