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author | ken <ken@FreeBSD.org> | 2012-01-26 16:35:09 +0000 |
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committer | ken <ken@FreeBSD.org> | 2012-01-26 16:35:09 +0000 |
commit | 7f685c218aab7dcffad6119b6e3741a0b71a2e97 (patch) | |
tree | d7ac881e15cd62a22e0e8f7d9e34f5708762e482 /sys/xen | |
parent | 709d732d543664ea423f0de76539e97df592cf5c (diff) | |
download | FreeBSD-src-7f685c218aab7dcffad6119b6e3741a0b71a2e97.zip FreeBSD-src-7f685c218aab7dcffad6119b6e3741a0b71a2e97.tar.gz |
Xen netback driver rewrite.
share/man/man4/Makefile,
share/man/man4/xnb.4,
sys/dev/xen/netback/netback.c,
sys/dev/xen/netback/netback_unit_tests.c:
Rewrote the netback driver for xen to attach properly via newbus
and work properly in both HVM and PVM mode (only HVM is tested).
Works with the in-tree FreeBSD netfront driver or the Windows
netfront driver from SuSE. Has not been extensively tested with
a Linux netfront driver. Does not implement LRO, TSO, or
polling. Includes unit tests that may be run through sysctl
after compiling with XNB_DEBUG defined.
sys/dev/xen/blkback/blkback.c,
sys/xen/interface/io/netif.h:
Comment elaboration.
sys/kern/uipc_mbuf.c:
Fix page fault in kernel mode when calling m_print() on a
null mbuf. Since m_print() is only used for debugging, there
are no performance concerns for extra error checking code.
sys/kern/subr_scanf.c:
Add the "hh" and "ll" width specifiers from C99 to scanf().
A few callers were already using "ll" even though scanf()
was handling it as "l".
Submitted by: Alan Somers <alans@spectralogic.com>
Submitted by: John Suykerbuyk <johns@spectralogic.com>
Sponsored by: Spectra Logic
MFC after: 1 week
Reviewed by: ken
Diffstat (limited to 'sys/xen')
-rw-r--r-- | sys/xen/interface/io/netif.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/sys/xen/interface/io/netif.h b/sys/xen/interface/io/netif.h index fbb5c27..261b7d9 100644 --- a/sys/xen/interface/io/netif.h +++ b/sys/xen/interface/io/netif.h @@ -42,7 +42,7 @@ * This is the 'wire' format for packets: * Request 1: netif_tx_request -- NETTXF_* (any flags) * [Request 2: netif_tx_extra] (only if request 1 has NETTXF_extra_info) - * [Request 3: netif_tx_extra] (only if request 2 has XEN_NETIF_EXTRA_MORE) + * [Request 3: netif_tx_extra] (only if request 2 has XEN_NETIF_EXTRA_FLAG_MORE) * Request 4: netif_tx_request -- NETTXF_more_data * Request 5: netif_tx_request -- NETTXF_more_data * ... @@ -70,7 +70,9 @@ struct netif_tx_request { uint16_t offset; /* Offset within buffer page */ uint16_t flags; /* NETTXF_* */ uint16_t id; /* Echoed in response message. */ - uint16_t size; /* Packet size in bytes. */ + uint16_t size; /* For the first request in a packet, the packet + size in bytes. For subsequent requests, the + size of that request's associated data in bytes*/ }; typedef struct netif_tx_request netif_tx_request_t; @@ -175,7 +177,7 @@ struct netif_rx_response { uint16_t id; uint16_t offset; /* Offset in page of start of received packet */ uint16_t flags; /* NETRXF_* */ - int16_t status; /* -ve: BLKIF_RSP_* ; +ve: Rx'ed pkt size. */ + int16_t status; /* -ve: NETIF_RSP_* ; +ve: Rx'ed response size. */ }; typedef struct netif_rx_response netif_rx_response_t; |