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authorRalf Baechle <ralf@linux-mips.org>2005-09-12 17:27:37 -0400
committerDavid S. Miller <davem@davemloft.net>2005-09-12 17:27:37 -0400
commite21ce8c7c013fb223a002c70bb0a547de6c26c12 (patch)
tree767b9aae7bdd50cdf867f3cdc1a3e214692146e1 /net/netrom/nr_subr.c
parentd2ce4bc340946d5b78484d638ac10df958c4c3bf (diff)
[NETROM]: Implement G8PZT Circuit reset for NET/ROM
NET/ROM is lacking a connection reset like TCP's RST flag which at times may result in a connecting having to slowly timing out instead of just being reset. An earlier attempt to reset the connection by sending a NR_CONNACK | NR_CHOKE_FLAG transport was inacceptable as it did result in crashes of BPQ systems. An alternative approach of introducing a new transport type 7 (NR_RESET) has be implemented several years ago in Paula Jayne Dowie G8PZT's Xrouter. Implement NR_RESET for Linux's NET/ROM but like any messing with the state engine consider this experimental for now and thus control it by a sysctl (net.netrom.reset) which for the time being defaults to off. Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netrom/nr_subr.c')
-rw-r--r--net/netrom/nr_subr.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/net/netrom/nr_subr.c b/net/netrom/nr_subr.c
index 587bed2674bf..bcb9946b4f56 100644
--- a/net/netrom/nr_subr.c
+++ b/net/netrom/nr_subr.c
@@ -210,10 +210,9 @@ void nr_write_internal(struct sock *sk, int frametype)
210} 210}
211 211
212/* 212/*
213 * This routine is called when a Connect Acknowledge with the Choke Flag 213 * This routine is called to send an error reply.
214 * set is needed to refuse a connection.
215 */ 214 */
216void nr_transmit_refusal(struct sk_buff *skb, int mine) 215void __nr_transmit_reply(struct sk_buff *skb, int mine, unsigned char cmdflags)
217{ 216{
218 struct sk_buff *skbn; 217 struct sk_buff *skbn;
219 unsigned char *dptr; 218 unsigned char *dptr;
@@ -254,7 +253,7 @@ void nr_transmit_refusal(struct sk_buff *skb, int mine)
254 *dptr++ = 0; 253 *dptr++ = 0;
255 } 254 }
256 255
257 *dptr++ = NR_CONNACK | NR_CHOKE_FLAG; 256 *dptr++ = cmdflags;
258 *dptr++ = 0; 257 *dptr++ = 0;
259 258
260 if (!nr_route_frame(skbn, NULL)) 259 if (!nr_route_frame(skbn, NULL))