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author | Michael Brown | 2008-08-20 04:21:37 +0200 |
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committer | Michael Brown | 2008-08-20 04:21:37 +0200 |
commit | 30fb3b3810409a4971adf9abf00e0842f88d87d8 (patch) | |
tree | 19e986606936b2e6f1eed89b066cb2791f77c9b5 /src/net/ethernet.c | |
parent | [undi] Work around broken UNDI polling behaviour in winBoot/i (diff) | |
download | ipxe-30fb3b3810409a4971adf9abf00e0842f88d87d8.tar.gz ipxe-30fb3b3810409a4971adf9abf00e0842f88d87d8.tar.xz ipxe-30fb3b3810409a4971adf9abf00e0842f88d87d8.zip |
[undi] Fill in ProtType correctly in PXENV_UNDI_ISR
Determine the network-layer packet type and fill it in for UNDI
clients. This is required by some NBPs such as emBoot's winBoot/i.
This change requires refactoring the link-layer portions of the
gPXE netdevice API, so that it becomes possible to strip the
link-layer header without passing the packet up the network stack.
Diffstat (limited to 'src/net/ethernet.c')
-rw-r--r-- | src/net/ethernet.c | 40 |
1 files changed, 21 insertions, 19 deletions
diff --git a/src/net/ethernet.c b/src/net/ethernet.c index 55035de5..7b1c496f 100644 --- a/src/net/ethernet.c +++ b/src/net/ethernet.c @@ -38,17 +38,16 @@ static uint8_t eth_broadcast[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; /** - * Transmit Ethernet packet + * Add Ethernet link-layer header * * @v iobuf I/O buffer * @v netdev Network device * @v net_protocol Network-layer protocol * @v ll_dest Link-layer destination address - * - * Prepends the Ethernet link-layer header and transmits the packet. */ -static int eth_tx ( struct io_buffer *iobuf, struct net_device *netdev, - struct net_protocol *net_protocol, const void *ll_dest ) { +static int eth_push ( struct io_buffer *iobuf, struct net_device *netdev, + struct net_protocol *net_protocol, + const void *ll_dest ) { struct ethhdr *ethhdr = iob_push ( iobuf, sizeof ( *ethhdr ) ); /* Build Ethernet header */ @@ -56,35 +55,38 @@ static int eth_tx ( struct io_buffer *iobuf, struct net_device *netdev, memcpy ( ethhdr->h_source, netdev->ll_addr, ETH_ALEN ); ethhdr->h_protocol = net_protocol->net_proto; - /* Hand off to network device */ - return netdev_tx ( netdev, iobuf ); + return 0; } /** - * Process received Ethernet packet - * - * @v iobuf I/O buffer - * @v netdev Network device + * Remove Ethernet link-layer header * - * Strips off the Ethernet link-layer header and passes up to the - * network-layer protocol. + * @v iobuf I/O buffer + * @v netdev Network device + * @v net_proto Network-layer protocol, in network-byte order + * @v ll_source Source link-layer address + * @ret rc Return status code */ -static int eth_rx ( struct io_buffer *iobuf, struct net_device *netdev ) { +static int eth_pull ( struct io_buffer *iobuf, + struct net_device *netdev __unused, + uint16_t *net_proto, const void **ll_source ) { struct ethhdr *ethhdr = iobuf->data; /* Sanity check */ if ( iob_len ( iobuf ) < sizeof ( *ethhdr ) ) { DBG ( "Ethernet packet too short (%zd bytes)\n", iob_len ( iobuf ) ); - free_iob ( iobuf ); return -EINVAL; } /* Strip off Ethernet header */ iob_pull ( iobuf, sizeof ( *ethhdr ) ); - /* Hand off to network-layer protocol */ - return net_rx ( iobuf, netdev, ethhdr->h_protocol, ethhdr->h_source ); + /* Fill in required fields */ + *net_proto = ethhdr->h_protocol; + *ll_source = ethhdr->h_source; + + return 0; } /** @@ -110,7 +112,7 @@ struct ll_protocol ethernet_protocol __ll_protocol = { .ll_addr_len = ETH_ALEN, .ll_header_len = ETH_HLEN, .ll_broadcast = eth_broadcast, - .tx = eth_tx, - .rx = eth_rx, + .push = eth_push, + .pull = eth_pull, .ntoa = eth_ntoa, }; |