mars-nwe/examples/kpatch2.0.29

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2011-11-13 00:38:58 +01:00
diff -ubr 2.0.29/include/linux/ipx.h linux/include/linux/ipx.h
--- 2.0.29/include/linux/ipx.h Mon May 13 22:39:28 1996
+++ linux/include/linux/ipx.h Tue May 27 02:50:48 1997
@@ -75,5 +75,6 @@
#define SIOCAIPXITFCRT (SIOCPROTOPRIVATE)
#define SIOCAIPXPRISLT (SIOCPROTOPRIVATE+1)
#define SIOCIPXCFGDATA (SIOCPROTOPRIVATE+2)
+#define SIOCIPXNCPCONN (SIOCPROTOPRIVATE+3)
#endif
diff -ubr 2.0.29/include/net/sock.h linux/include/net/sock.h
--- 2.0.29/include/net/sock.h Tue Dec 10 18:35:21 1996
+++ linux/include/net/sock.h Tue May 27 02:50:48 1997
@@ -112,7 +112,11 @@
* know the connection this socket belongs to.
*/
struct ncp_server *ncp_server;
-
+/*
+ * To handle special ncp connection-handling sockets for mars_nwe,
+ * the connection number must be stored in the socket.
+ */
+ unsigned short ipx_ncp_conn;
};
#endif
diff -ubr 2.0.29/net/ipx/af_ipx.c linux/net/ipx/af_ipx.c
--- 2.0.29/net/ipx/af_ipx.c Tue Dec 10 18:35:35 1996
+++ linux/net/ipx/af_ipx.c Tue May 27 02:50:48 1997
@@ -468,7 +468,60 @@
ipx_socket *sock1 = NULL, *sock2 = NULL;
struct sk_buff *skb1 = NULL, *skb2 = NULL;
+ if (intrfc == ipx_primary_net
+ && ntohs(ipx->ipx_dest.sock) == 0x451)
+ {
+ /*
+ * The packet's target is a NCP connection handler. We want to
+ * hand it to the correct socket directly within the kernel,
+ * so that the mars_nwe packet distribution process
+ * does not have to do it. Here we only care about NCP and
+ * BURST packets.
+ * You might call this a hack, but believe me, you do not
+ * want a complete NCP layer in the kernel, and this is
+ * VERY fast as well.
+ */
+ int connection = 0;
+
+ if ( *((char*)(ipx+1)) == 0x22
+ && *((char*)(ipx+1)+1) == 0x22)
+ {
+ /*
+ * The packet is a NCP request
+ */
+ connection = ( ((int) *((char*)(ipx+1)+5)) << 8 )
+ | (int) *((char*)(ipx+1)+3);
+ }
+ else if ( *((char*)(ipx+1)) == 0x77
+ && *((char*)(ipx+1)+1) == 0x77)
+ {
+ /*
+ * The packet is a BURST packet
+ */
+ connection = ( ((int) *((char*)(ipx+1)+9)) << 8 )
+ | (int) *((char*)(ipx+1)+8);
+ }
+
+ if (connection)
+ {
+ /*
+ * Now we have to look for a special NCP connection handling
+ * socket. Only these sockets have ipx_ncp_conn != 0, set
+ * by SIOCIPXNCPCONN.
+ */
+ for (sock1=intrfc->if_sklist;
+ (sock1 != NULL) &&
+ (sock1->protinfo.af_ipx.ipx_ncp_conn != connection);
+ sock1=sock1->next);;
+ }
+ }
+ if (sock1 == NULL)
+ {
+ /* No special socket found, forward the packet the
+ * normal way.
+ */
sock1 = ipxitf_find_socket(intrfc, ipx->ipx_dest.sock);
+ }
/*
* We need to check if there is a primary net and if
@@ -2242,6 +2295,21 @@
if(err) return err;
return(ipxcfg_get_config_data((void *)arg));
}
+
+ case SIOCIPXNCPCONN:
+ {
+ /*
+ * This socket wants to take care of the NCP connection
+ * handed to us in arg.
+ */
+ if (!suser()) return(-EPERM);
+ err = verify_area(VERIFY_READ, (void *)arg,
+ sizeof(unsigned short));
+ if (err) return err;
+ sk->protinfo.af_ipx.ipx_ncp_conn = get_fs_word(arg);
+ return 0;
+ }
+
case SIOCGSTAMP:
if (sk)
{