On 12. Jun 2012, at 12:44 , Randall Stewart wrote:
> Author: rrs
> Date: Tue Jun 12 12:44:17 2012
> New Revision: 236955
> URL: http://svn.freebsd.org/changeset/base/236955
>
> Log:
> Note to self. Have morning coffee *before* committing things.
> There is no mac_addr in the mbuf for BSD.. cheat like
> we are supposed to and use the csum field since our friend
> the gif tunnel itself will never use offload.
There are cards that can do checksums for IPIP... with drivers in out tree.
>
> Modified:
> head/sys/net/if_gif.c
>
> Modified: head/sys/net/if_gif.c
> ==============================================================================
> --- head/sys/net/if_gif.c Tue Jun 12 12:40:15 2012 (r236954)
> +++ head/sys/net/if_gif.c Tue Jun 12 12:44:17 2012 (r236955)
> @@ -388,7 +388,8 @@ keep_going:
> /* Now pull back the af in packet that
> * was saved in the address location.
> */
> - bcopy(m->m_pkthdr.src_mac_addr, &af, sizeof(af));
> + af = m->m_pkthdr.csum_data;
> +
> if (ifp->if_bridge)
> af = AF_LINK;
>
> @@ -503,10 +504,11 @@ gif_output(ifp, m, dst, ro)
> dst->sa_family = af;
> }
> af = dst->sa_family;
> - /* Now save the af in the inbound pkt mac
> - * address location.
> + /* Now save the af in the inbound pkt csum
> + * data, this is a cheat since really
> + * gif tunnels don't do offload.
> */
> - bcopy(&af, m->m_pkthdr.src_mac_addr, sizeof(af));
> + m->m_pkthdr.csum_data = af;
> if (!(ifp->if_flags & IFF_UP) ||
> sc->gif_psrc == NULL || sc->gif_pdst == NULL) {
> m_freem(m);
--
Bjoern A. Zeeb You have to have visions!
It does not matter how good you are. It matters what good you do!
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