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| author | rrs <rrs@FreeBSD.org> | 2009-02-03 11:00:43 +0000 |
|---|---|---|
| committer | rrs <rrs@FreeBSD.org> | 2009-02-03 11:00:43 +0000 |
| commit | 2688c691800f6933c6b9eeeb46cf522db6f1af5c (patch) | |
| tree | 23b147e1d579bbf8d4eb4845fe7846b01184ffc7 /sys/dev/xen/netback | |
| parent | 3091212869dee5f2673091658796eb1badc0135f (diff) | |
| download | FreeBSD-src-2688c691800f6933c6b9eeeb46cf522db6f1af5c.zip FreeBSD-src-2688c691800f6933c6b9eeeb46cf522db6f1af5c.tar.gz | |
Adds support for SCTP checksum offload. This means
we, like TCP and UDP, move the checksum calculation
into the IP routines when there is no hardware support
we call into the normal SCTP checksum routine.
The next round of SCTP updates will use
this functionality. Of course the IGB driver needs
a few updates to support the new intel controller set
that actually does SCTP csum offload too.
Reviewed by: gnn, rwatson, kmacy
Diffstat (limited to 'sys/dev/xen/netback')
| -rw-r--r-- | sys/dev/xen/netback/netback.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/sys/dev/xen/netback/netback.c b/sys/dev/xen/netback/netback.c index 950a68c..a6111e2 100644 --- a/sys/dev/xen/netback/netback.c +++ b/sys/dev/xen/netback/netback.c @@ -30,6 +30,7 @@ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); +#include "opt_sctp.h" #include <sys/param.h> #include <sys/systm.h> @@ -57,6 +58,10 @@ __FBSDID("$FreeBSD$"); #include <netinet/ip.h> #include <netinet/tcp.h> #include <netinet/udp.h> +#ifdef SCTP +#include <netinet/sctp.h> +#include <netinet/sctp_crc32.h> +#endif #include <vm/vm_extern.h> #include <vm/vm_kern.h> @@ -295,6 +300,11 @@ fixup_checksum(struct mbuf *m) htons(IPPROTO_TCP + (iplen - iphlen))); th->th_sum = in_cksum_skip(m, iplen + sizeof(*eh), sizeof(*eh) + iphlen); m->m_pkthdr.csum_flags &= ~CSUM_TCP; +#ifdef SCTP + } else if (sw_csum & CSUM_SCTP) { + sctp_delayed_cksum(m); + sw_csum &= ~CSUM_SCTP; +#endif } else { u_short csum; struct udphdr *uh = (struct udphdr *)((caddr_t)ip + iphlen); @@ -908,7 +918,8 @@ netif_rx(netif_t *netif) #ifdef XEN_NETBACK_FIXUP_CSUM /* Check if we need to compute a checksum. This happens */ /* when bridging from one domain to another. */ - if ((m->m_pkthdr.csum_flags & CSUM_DELAY_DATA)) + if ((m->m_pkthdr.csum_flags & CSUM_DELAY_DATA) || + (m->m_pkthdr.csum_flags & CSUM_SCTP)) fixup_checksum(m); #endif |
