cxgbe(4): improve the accuracy of various TSO limits reported to the kernel.
Sponsored by: Chelsio Communications
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db2380870c
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17e81b7863
@ -113,6 +113,7 @@ enum {
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SGE_MAX_WR_NDESC = SGE_MAX_WR_LEN / EQ_ESIZE, /* max WR size in desc */
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TX_SGL_SEGS = 39,
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TX_SGL_SEGS_TSO = 38,
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TX_SGL_SEGS_EO_TSO = 30, /* XXX: lower for IPv6. */
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TX_WR_FLITS = SGE_MAX_WR_LEN / 8
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};
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@ -63,6 +63,8 @@ __FBSDID("$FreeBSD$");
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#ifdef RSS
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#include <net/rss_config.h>
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#endif
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#if defined(__i386__) || defined(__amd64__)
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#include <machine/md_var.h>
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#include <machine/cputypes.h>
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@ -1535,9 +1537,13 @@ cxgbe_vi_attach(device_t dev, struct vi_info *vi)
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ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO |
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CSUM_UDP_IPV6 | CSUM_TCP_IPV6;
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ifp->if_hw_tsomax = 65536 - (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN);
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ifp->if_hw_tsomaxsegcount = TX_SGL_SEGS;
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ifp->if_hw_tsomaxsegsize = 65536;
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ifp->if_hw_tsomax = IP_MAXPACKET;
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ifp->if_hw_tsomaxsegcount = TX_SGL_SEGS_TSO;
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#ifdef RATELIMIT
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if (is_ethoffload(vi->pi->adapter) && vi->nofldtxq != 0)
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ifp->if_hw_tsomaxsegcount = TX_SGL_SEGS_EO_TSO;
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#endif
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ifp->if_hw_tsomaxsegsize = 0;
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ether_ifattach(ifp, vi->hw_addr);
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#ifdef DEV_NETMAP
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