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Groups > linux.kernel > #1263344
| From | Eric Dumazet <eric.dumazet@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: NETIF_F_GSO_SOFTWARE vs NETIF_F_GSO |
| Date | 2015-11-05 17:00 +0100 |
| Message-ID | <qrv7c-9F-7@gated-at.bofh.it> (permalink) |
| References | <qr4qm-8db-23@gated-at.bofh.it> <qrrGh-6Az-1@gated-at.bofh.it> <qrukN-8kv-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, 2015-11-05 at 16:00 +0100, Jason A. Donenfeld wrote: > Right -- I saw the expansion in the header file -- it gets the various > TSOs plus UFO. So what this means is that the packet hasn't yet been > split up? So were I to add this option, then my driver would have to > be responsible for splitting up the super-packets manually? In which > case, there would be no performance benefit in using it, since GSO > already does this just prior to ndo_start_xmit? Or would there be a > performance benefit in receiving the super-packets and splitting them > myself? It is a performance benefit only if you use the helpers from net/core/tso.c as some drivers already do. Otherwise, calling the skb_gso_segment() from your driver has no gain compared to the one done from core networking stack. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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NETIF_F_GSO_SOFTWARE vs NETIF_F_GSO "Jason A. Donenfeld" <Jason@zx2c4.com> - 2015-11-04 12:30 +0100
Re: NETIF_F_GSO_SOFTWARE vs NETIF_F_GSO Herbert Xu <herbert@gondor.apana.org.au> - 2015-11-05 13:20 +0100
Re: NETIF_F_GSO_SOFTWARE vs NETIF_F_GSO "Jason A. Donenfeld" <Jason@zx2c4.com> - 2015-11-05 16:10 +0100
Re: NETIF_F_GSO_SOFTWARE vs NETIF_F_GSO Eric Dumazet <eric.dumazet@gmail.com> - 2015-11-05 17:00 +0100
Re: NETIF_F_GSO_SOFTWARE vs NETIF_F_GSO "Jason A. Donenfeld" <Jason@zx2c4.com> - 2015-11-05 17:30 +0100
Re: NETIF_F_GSO_SOFTWARE vs NETIF_F_GSO "Jason A. Donenfeld" <Jason@zx2c4.com> - 2015-11-06 02:40 +0100
Re: NETIF_F_GSO_SOFTWARE vs NETIF_F_GSO Herbert Xu <herbert@gondor.apana.org.au> - 2015-11-06 06:00 +0100
Re: NETIF_F_GSO_SOFTWARE vs NETIF_F_GSO "Jason A. Donenfeld" <Jason@zx2c4.com> - 2015-11-06 12:50 +0100
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